Abstract

An equipment maintenance system determines a support method to support equipment failures comprising: an asset knowledge database registers equipment failures and their causes, an input section receives fault information output from the equipment, a cause of failure presumption section refers to the asset knowledge database and presumes the causes of failure based on information received by the input section, a support method determination section determines the method to support the presumed cause of failure, a cost estimating section estimates the cost required for the determined support method determination section dividing into the cost of on-site support, in which technicians visit the site where the equipment is installed, and the cost of remote support, in which technicians support the equipment remotely, and an output section outputs the support method with the lowest cost among the cost of on-site support and the cost of remote support estimated by the cost estimating section.

IPC Classes  ?

• G06Q 30/0283 - Price estimation or determination
• G06Q 10/20 - Administration of product repair or maintenance

Abstract

The conduction reliability of a fitting connection portion between a recess and a protrusion of a stator coil of a rotary electrical machine is improved. The stator coil is formed by a first coil segment 30 including a protrusion 35 at one end and a second coil segment 40 including a recess 46 at one end. A projection side surface 35b of the protrusion 35 is a metal surface of the first coil segment 30, and a metal plating layer 50 having a lower hardness than a metal of the first coil segment 30 is formed on a metal surface of an inner wall surface 46b of the recess 46. When the coil segments 30 and 40 are joined together, the metal surface of the projection side surface 35b comes into contact with the metal plating layer 50, and therefore, gaps between both projections 38a and grooves 38b and the metal plating layer 50 are closed, and the contact resistance is reduced.

IPC Classes  ?

• H02K 3/28 - Layout of windings or of connections between windings

Abstract

This diagnosis system diagnoses a monitoring target instrument by using a computer comprising a processor and a memory. The processor: receives operation data that contains the control which has been performed periodically over the monitoring target instrument, and the running time of the instrument which has been run according to said control; and gives a diagnosis of abnormality with respect to the instrument in an inefficient operation state, on the basis of a determination as to whether or not a prescribed relationship is satisfied between the control and the running time of the instrument contained in the operation data.

IPC Classes  ?

• G01M 3/02 - Investigating fluid tightness of structures by using fluid or vacuum
• G01M 99/00 - Subject matter not provided for in other groups of this subclass
• G01N 15/08 - Investigating permeability, pore volume, or surface area of porous materials

Abstract

This energy storage device comprises: a compressor that compresses air; a liquid supply pump that supplies a liquid medium; a first heat exchanger that exchanges heat between the air compressed by the compressor and the liquid medium supplied by the liquid supply pump; a pressure accumulator tank that stores the air having undergone the heat exchange by the first heat exchanger; a heat accumulator tank that stores the liquid medium having undergone the heat exchange by the first heat exchanger; a second heat exchanger that exchanges heat between the air stored in the pressure accumulator tank and the liquid medium stored in the heat accumulator tank; an expander that is driven by the air having undergone the heat exchange by the second heat exchanger; an air supply pipe that is connected to the pressure accumulator tank and the expander via the second heat exchanger and supplies the air supplied from the pressure accumulator tank to the expander; and a liquid supply pipe that is connected to the liquid supply pump and the expander via the first heat exchanger and the heat accumulator tank and supplies the liquid medium supplied from the liquid supply pump to the expander.

IPC Classes  ?

• F02C 6/16 - Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
• F02C 1/04 - Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid the working fluid being heated indirectly
• H02J 15/00 - Systems for storing electric energy

Abstract

To provide a technique that enables recovery of oil stored in a gear casing without using a pump. A compressor 100 includes: a rotor 9 that compresses air; an electric motor 42 that drives the rotor 9; a gear that transmits the drive of the electric motor 42 to the rotor 9; a gear casing 22 that houses the gear; an oil tank 11 that stores oil separated from the compressed air; an oil supply passage 25 that extends from the oil tank 11 to the gear casing 22; an oil recovery passage 26 that extends from the gear casing 22 to a compressor intake portion 20; and an oil pressurizing passage 27 that extends from a discharge port 14b to the gear casing 22. Oil is supplied from the oil tank 11 to the gear casing 22 via the oil supply passage 25 by discharge pressure of the compressor 100, and the gear casing 22 is pressurized via the oil pressurizing passage 27 by the discharge pressure, thereby recovering oil from the gear casing 22 to the compressor intake portion 20 via the oil recovery passage 26.

IPC Classes  ?

• F04C 29/02 - LubricationLubricant separation
• F04C 18/08 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing

Abstract

The present invention comprises: a diagnostic condition determination unit that determines a predetermined diagnostic condition on the basis of a diagnostic frequency, motor speed, and output voltage modulation rate for performing abnormality diagnosis; a control change unit that reduces the modulation rate on the basis of the determination result of the diagnostic condition determination unit; and an abnormality diagnosis unit that performs equipment abnormality diagnosis from a motor current on the basis of the determination result of the diagnostic condition determination unit.

IPC Classes  ?

• G01R 31/34 - Testing dynamo-electric machines
• H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
• H02P 21/22 - Current control, e.g. using a current control loop
• H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation

Abstract

The present invention provides a motor in which magnets can be easily separated. Provided is a SPM motor comprising, a stator, a rotor that is disposed inside of the stator and has an iron core, a shaft that is disposed at the center of the rotor, and permanent magnets that are disposed on the surface of the iron core. The iron core is provided with permanent magnet-facing holes that face the permanent magnets.

IPC Classes  ?

• H02K 1/278 - Surface mounted magnetsInset magnets

Abstract

A technique that can prevent a worker from being exposed to contaminants when an abnormality has occurred in a remote blower of a building is provided. A safety cabinet includes: an opening portion for exhausting air in a work space; an exhaust duct connected to the opening portion; a remote blower that sends the air in the work space to outdoors from the exhaust duct; a backup exhaust duct branched from the exhaust flow path of the exhaust duct; a backup remote blower that sends the air in the work space to outdoors from the backup exhaust duct; and a safety cabinet control unit that transmits an startup signal to the backup remote blower when it detects that the remote blower has stopped operating.

IPC Classes  ?

• B01L 1/00 - EnclosuresChambers
• B08B 15/02 - Preventing escape of dirt or fumes from the area where they are producedCollecting or removing dirt or fumes from that area using chambers or hoods covering the area

Abstract

A safety cabinet includes: an opening portion for exhausting air in a work space; an exhaust duct connected to the opening portion; a remote blower that sends the air in the work space to outdoors from the exhaust duct; and a safety cabinet control unit that transmits a signal to an arithmetic processing device, which notifies the worker based on the values indicating the operating state of the remote blower.

IPC Classes  ?

• F24F 11/526 - Indication arrangements, e.g. displays giving audible indications
• B01L 1/00 - EnclosuresChambers
• F24F 3/163 - Clean air work stations, i.e. selected areas within a space to which filtered air is passed

Abstract

To provide a compressor and a control method of a compressor that improve the reliability of an operation under a high ambient temperature environment. An operation of an electric motor is controlled on the basis of either a normal operation mode or a heat safety mode in which a set pressure for regulating an operation of the electric motor according to a pressure in a tank for storing compressed air is lowered either when an ambient temperature exceeds a first temperature threshold value or when a difference between the ambient temperature and the temperature of a discharge section area exceeds a temperature difference threshold value for HS mode.

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Abstract

A technique is provided that can prevent damage to a waste heat recovery heat exchanger. An air compressor includes cooling heat exchangers that perform heat exchange between cooling water and compressed air, and a cooling liquid pipe through which the cooling water flows. A waste heat recovery unit includes waste heat recovery heat exchangers that perform heat exchange between waste heat recovery water and compressed air, a waste heat recovery liquid pipe through which the waste heat recovery water flows, a waste heat recovery liquid inlet pipe and a waste heat recovery liquid outlet pipe that connect an auxiliary cooling facility and the waste heat recovery liquid pipe, flow path switching three-way valves that open and close the inlet and outlet pipes, and a temperature controller that controls the valves. When the temperature of the waste heat recovery water exceeds a threshold, the temperature controller opens the inlet and outlet pipes by controlling the three-way valves.

IPC Classes  ?

• F28F 27/00 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
• F28D 21/00 - Heat-exchange apparatus not covered by any of the groups

Abstract

An air compression device having a buffer tank provided at a predetermined position in an air return pipe for temporarily storing return air is provided.

IPC Classes  ?

• F04B 41/02 - Pumping installations or systems specially adapted for elastic fluids having reservoirs
• F04B 41/06 - Combinations of two or more pumps
• F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
• F04B 53/08 - CoolingHeatingPreventing freezing

Abstract

To provide a power conversion device and a motor control system capable of implementing stable speed control even if a speed response is enhanced. Therefore, there are provided a power converter 2 that converts DC power into AC power and outputs the AC power to an induction motor based on AC voltage command values vu*, vv*, and vw* in stationary coordinates, and a controller CT that calculates the voltage command values in the stationary coordinates by vector control. The controller CT adds, to a steady-state value of a slip frequency determined by a d-axis current (id), a q-axis current (iq), and a secondary time constant (T2), a transient value determined by differential calculation using the d-axis current (id) and the q-axis current (iq) to calculate a slip frequency command value ωs**.

IPC Classes  ?

• H02P 21/14 - Estimation or adaptation of machine parameters, e.g. flux, current or voltage
• H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters

Abstract

The present invention provides a temperature information calculation device that calculates information relating to time and the temperature of an object by using a time and temperature indicator, the color density of which changes in accordance with a change in temperature and time. A temperature information calculation device (100) according to the present invention comprises: a storage unit (120) that stores in advance, for a plurality of temperatures, a master curve representing the relationship between color density and time at a prescribed temperature indicated by a time and temperature indicator (400); and a calculation unit (130) that calculates information relating to the temperature of the environment in which an object is placed, using information relating to the color density read from the time and temperature indicator (400) applied to the object and the time at which the color density was read, information relating to the color density at a reference point and the time at the reference point, and the master curve stored in the storage unit (120).

IPC Classes  ?

• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• G01N 25/00 - Investigating or analysing materials by the use of thermal means
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G01N 33/02 - Food

Abstract

The present invention provides a quality determining system capable of acquiring temperature information of an environment in which an object is placed, and the quality of the object, with high accuracy. The quality determining system of the present invention is provided with a quality indicator (100) and a determining device (200). The quality indicator (100) is provided with a time-temperature indicator (110) and a unique ID unit (120) from which unique ID information of the object is read. The unique ID information includes information identifying the object and data acquired from the time-temperature indicator (110) of the object. The determining device (200) comprises: an information acquiring unit (420) that acquires the color density of the time-temperature indicator (110) associated with acquired unique ID information; a time-color density calculating unit (510) that calculates an amount of change in the color density of the time-temperature indicator (110) and the elapsed time from a date and time serving as a starting point; and a temperature calculating unit (520) that uses a rate of change in the color density, the amount of change in the color density, and the elapsed time to obtain a plurality of combinations of the time and temperature of the environment in which it can be considered that the object has been placed during the elapsed time.

IPC Classes  ?

• G01K 11/12 - Measuring temperature based on physical or chemical changes not covered by group , , , or using changes in colour, translucency or reflectance
• G01N 25/02 - Investigating or analysing materials by the use of thermal means by investigating changes of state or changes of phaseInvestigating or analysing materials by the use of thermal means by investigating sintering
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G06Q 10/083 - Shipping

Abstract

This power conversion device comprises: a phase calculation unit that calculates a phase estimation value for a phase of an electric motor; a coordinate conversion unit that converts the current value of an AC current flowing through the electric motor into a current value in a rotating coordinate system on the basis of the phase estimation value calculated by the phase calculation unit; a vector control calculation unit that calculates a voltage command value for the electric motor on the basis of the current value in the rotating coordinate system; a power converter that generates the AC current on the basis of the voltage command value; and a machine learning device that has a trained machine learning model, inputs an input value including at least one of the voltage command value and the current value in the rotating coordinate system to the machine learning model, and outputs an output value related to the phase. The phase calculation unit calculates the phase estimation value on the basis of the output value.

IPC Classes  ?

• H02P 21/18 - Estimation of position or speed
• H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters

Abstract

A clean air equipment that has a method for determining filter clogging that is both accurate and cost-effective. A clean air equipment having a filter, a wind speed sensor that measures the air speed after passing through the filter, a differential pressure sensor that measures the pressure difference before and after the filter, forming the second life prediction line so as to fit a changing rate of the first life prediction line obtained from the initial value of either one of the wind speed sensor or the differential pressure sensor and the value at the time of correction measurement with a changing rate of the second life prediction line obtained from another one of the wind speed sensor or the differential pressure sensor, managing the filter based on the first life prediction line or the second life prediction line.

IPC Classes  ?

• B01D 46/00 - Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
• B01D 46/44 - Auxiliary equipment or operation thereof controlling filtration

Abstract

Provided is a carbon dioxide recovery device capable of improving carbon dioxide adsorption performance while increasing the utilization rate of exhaust heat of a heat exchanger. This carbon dioxide recovery device includes: an air flow passage 2 connected to an outlet of an air-cooled heat exchanger 1; an adsorbent 3 for adsorbing carbon dioxide in air introduced through the air flow passage 2; a temperature sensor 4 for detecting the temperature of the air in the air flow passage 2; a flow rate adjustment part 5 for introducing, into the air flow passage 2, air outside the air flow passage 2; and a control device 6 for controlling the flow rate adjustment part 5 on the basis of a detection result of the temperature sensor 4.

IPC Classes  ?

• B01D 53/14 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by absorption
• C01B 32/50 - Carbon dioxide

Abstract

The present invention enables reduction of man-hours for developing a cause diagnosis model.　A cause diagnosis model construction tool 120: acquires a flow file 100 and a table file 105 indicating maintenance information including symptoms, causes, and responses at the times of failures of a target apparatus; extracts, from the flow file 100 and the table file 105, a failure mode indicating the state of a component of the target apparatus that is likely to cause the failure of the target apparatus and an inspection item indicating the state of the target apparatus for identifying the failure mode; stores the failure mode and the inspection item in a temporary storage unit 150 in association with each other; and generates a Bayesian network 183 on the basis of the failure mode and the inspection item.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• G06N 3/047 - Probabilistic or stochastic networks

Abstract

The present invention reduces the processing load of a management device, and flexibly implements program updates for a communication device. A communication device according to the present invention is connected to a management device for distributing programs, and comprises a program update unit constituted by an update determination information acquisition unit, an update necessity determination unit, and a program application unit. The update determination information acquisition unit acquires, from the management device, update determination information for a program. The update necessity determination unit determines whether a program update is necessary for the device itself on the basis of a target device ID, a determination program necessity requirement, a target program, a post-update version, and an update form written in the update determination information, and, when an update is necessary, acquires a program from a program acquisition source written in the update determination information. The program application unit applies the acquired program to the device itself and notifies the management device about the version information of the updated program.

IPC Classes  ?

• G06F 8/65 - Updates
• G06F 8/71 - Version control Configuration management

Abstract

This positioning system comprises an antenna that receives a satellite signal from a satellite, and a receiver that decodes the satellite signal received by the antenna to generate satellite information, the satellite information including at least a satellite position viewed from the antenna and a reception signal intensity. The positioning system further comprises: a visible range calculation unit that obtains a distribution of satellite positions at which the reception signal intensity is equal to or greater than a predetermined threshold and calculates a visible range from the distribution; and a positioning result output unit that outputs a positioning result on the basis of the satellite information of the satellite in the visible range. This makes it possible to achieve highly accurate positioning with a simple configuration.

IPC Classes  ?

• G01S 19/28 - Satellite selection

Abstract

This route design device for generating a movement route of an autonomous mobile body comprises: a reference information reception unit that receives reference information to be referred to when determining the shape of the movement route; a strictness level setting unit that sets a strictness level to be applied to the reference information; and a route generation unit that generates the movement route on the basis of the reference information and the strictness level. The reference information reception unit receives, as the reference information, a reference point designated between a movement start point and a movement end point and/or a reference line segment indicating a combination of line segments from the movement start point to the movement end point. The strictness level setting unit is able to set, as the strictness level, the degree of bringing the movement route closer to the reference point and/or the reference line segment, and is able to set different strictness levels for a plurality of pieces of the reference information. Accordingly, it is possible to generate an appropriate route according to characteristics of a travel area.

IPC Classes  ?

• G05D 1/43 - Control of position or course in two dimensions
• G05D 1/246 - Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM]

Abstract

This power conversion device comprises: a chopper that has a switching element, and bidirectionally converts a battery voltage and a DC link voltage using the switching element; an inverter that bidirectionally converts the DC link voltage and an AC voltage; and a control device that controls the inverter and the chopper. The control device can select, as an operating mode for controlling the chopper, one of a first mode in which the DC link voltage is controlled in accordance with a voltage command value by turning on/off the switching element, and a second mode in which the switching element is always in an on state. The control device reduces the voltage command value when the operating mode is shifted from the first mode to the second mode.

IPC Classes  ?

• H02M 3/155 - Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

Providing a high frequency excitation heating equipment suitable for annealing by high-frequency excitation. High frequency excitation heating equipment with a first iron core support member disposed inside the iron core, a second iron core support member disposed outside the iron core, and a fastening member fastened while insulating the first iron core support member and the second iron core support member, the first iron core support member and the second iron core support member are acyclic, a high-frequency induction coil disposed around the first iron core support member, the second iron core support member, and the iron core, a power source that supplies AC power to the high-frequency induction coil, a function generator that generates alternating current, and a program adjuster that generates a control signal that commands the function generator, at least one of the first iron core support member and the second iron core support member has a temperature sensor, and the measured value of the temperature sensor is input to the program controller, which feedback controls the AC power according to the measured value of the temperature sensor.

IPC Classes  ?

• H01F 1/153 - Amorphous metallic alloys, e.g. glassy metals
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H05B 6/04 - Sources of current
• H05B 6/06 - Control, e.g. of temperature, of power
• H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications

Abstract

An operation of an inkjet recording device is performed without performing operations, such as interruption of an ink circulation process in an idle state and resetting, in a state in which execution of the ink circulation process is maintained. Ink is supplied to a nozzle to perform printing on a printing target. An idle-mode ink circulation process circulates ink in an idle state, the idle-mode ink circulation process repeating the circulation of the ink in a path, and a standby state at a predetermined time interval. An operation display unit displays a standby screen for the idle-mode ink circulation process and displays information for operating the inkjet recording device on the standby screen in a state in which execution of the idle-mode ink circulation process is maintained. The inkjet recording device receives an operation of the inkjet recording device based on the information displayed on the standby screen.

IPC Classes  ?

• B41J 2/17 - Ink jet characterised by ink handling
• B41J 2/045 - Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
• B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
• B41J 2/175 - Ink supply systems

Abstract

Provided is a compressed air energy storage device for achieving improved efficiency in the generation and storage of compressed air.　The compressed air energy storage device comprises: a low pressure tank 15 and a high pressure tank 17 that store compressed air; a pneumatic apparatus 16 driven by the compressed air of the low pressure tank 15; generators 19A, 19B driven by expanders 18A, 18B driven by the compressed air of the high pressure tank 17; a switching valve 20 that switches the supply destination of the compressed air from compressors 12A, 12B driven by electric motors 11A, 11B between the low pressure tank 15 and the high pressure tank 17; and a control device 30. The control device 30 controls the rotation speeds of the electric motors 11A, 11B so that the pressure of the low-pressure tank 15 becomes a first target value when the supply destination of the compressed air is the low-pressure tank 15, and controls the rotation speeds of the electric motors 11A, 11B so that the pressure of the high-pressure tank 17 becomes a second target value when the supply destination of the compressed air is the high-pressure tank 17.

IPC Classes  ?

• F02C 6/16 - Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air

Abstract

This power conversion device is connected to a DC bus to which a first DC power supply is connected and an AC grid to which a second DC power supply is connected via a power conditioner, converts the DC power of the DC bus and the AC power of the AC grid to each other, and controls the operation of the power conditioner on the basis of the voltage of the DC bus.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

Provided is a compressor capable of improving an energy saving effect corresponding to a use state of compressed gas.　A control device 10 of a compressor has a control function for switching to an unload operation of a compressor body 1 when a discharge-side pressure rises to an upper limit pressure in a load operation of the compressor body 1. The control device 10 further has a control function for switching to an eco mode in which the upper limit pressure becomes a second pressure lower than a first pressure when a cycle time is equal to or longer than a determination time in a normal mode in which the upper limit pressure is the first pressure. The control device 10 records a transition of the pressure in a tank 4 detected by a tank pressure sensor 15, calculates a recommended value of the second pressure on the basis of a maximum value of a decrease width of the pressure in the tank 4, and causes the recommended value of the second pressure to be displayed on a display unit 13.

IPC Classes  ?

• F04C 28/00 - Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
• F04B 49/02 - Stopping, starting, unloading or idling control

Abstract

The present invention provides a drive device for an induction motor capable of performing sensorless vector control in which an electric constant required for control is set with high accuracy for an induction motor with an unknown electric constant and thereby the induction motor is stably driven from a low speed range to a high speed range. This drive device is provided with an inverter 2 for driving an induction motor 1, a current detector 4 for detecting a current in the induction motor 1, and a controller 5 for reading the current value detected by the current detector 4 and controlling the induction motor 1 via the inverter 2. The controller 5 has speed estimators 7, 7C, 7D, and 7F for estimating and calculating the rotational speed of the induction motor 1, calculates an induced voltage generated by the induction motor 1 by using the voltage applied to the induction motor 1 and the electric constant of the induction motor 1, separately obtains a main magnetic flux direction component Ed of the induced voltage and an orthogonal component Eq of the induced voltage with respect to a main magnetic flux, calculates an error angle Δθ formed between the main magnetic flux direction component Ed and the orthogonal component Eq, adjusts a drive frequency for the induction motor 1 such that the value thereof becomes zero, and estimates and calculates the rotational speed of the induction motor 1.

IPC Classes  ?

• H02P 21/18 - Estimation of position or speed

Abstract

The present invention provides an air compressor which is capable of recovering carbon dioxide while suppressing power consumption.　The air compressor comprises: compressor main bodies 3A, 3B for compressing air; an air release valve 11A which is provided in a branch pipe 10A branched from a discharge pipe 4A of the compressor main body 3A; a carbon dioxide recovery device 20A which is disposed on the downstream side of the air release valve 11A and recovers carbon dioxide in the compressed air; an air release valve 11B which is provided in a branch pipe 10B branched from a discharge pipe 4B of the compressor main body 3B; and a carbon dioxide recovery device 20B which is disposed on the downstream side of the air release valve 11B and recovers carbon dioxide in the compressed air.

IPC Classes  ?

• B01D 53/00 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols

Abstract

The present invention improves the SN ratio of a partial discharge measurement device. The partial discharge measurement device has a first metal plate (2) and a second metal plate (1) disposed inside a panel (101) and electrically connected to the first metal plate (2) via a cable (3), and measures a current in the first metal plate (2) to measure partial discharges inside the panel (101).

IPC Classes  ?

• G01R 31/12 - Testing dielectric strength or breakdown voltage
• G01R 29/08 - Measuring electromagnetic field characteristics

Abstract

Provided is a screw compressor capable of suppressing agitation power for lubricating oil caused by a gear.　The screw compressor comprises: a male rotor 1; a bearing 7 that rotatably supports a shaft portion 5A of the male rotor 1; a bearing retainer 15A that fixes the outer ring of the bearing 7; and a synchronization gear 16A that is attached to the shaft portion 5A of the male rotor 1. The synchronization gear 16A, the bearing retainer 15A, the bearing 7, and a tooth portion 3 of the male rotor 1 are arranged in the stated order. A groove 22A for guiding lubricating oil flowing out of the bearing 7 is formed in an outer end face, of the bearing retainer 15A, facing the synchronization gear 16A. The groove 22A extends from an inner end that opens to the inner peripheral face of the bearing retainer 15A to an outer end that is located radially outward of the synchronization gear 16A.

IPC Classes  ?

• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
• F04C 29/02 - LubricationLubricant separation

Abstract

High frequency excitation heating equipment has a first iron core support member disposed inside the iron core, a second iron core support member disposed outside the iron core, and a fastening member fastened while insulating the first and second iron core support members, the first and second iron core support members are acyclic. A high-frequency induction coil disposed around the first iron core support member, the second iron core support member, and the iron core. A power source supplies AC power to the high-frequency induction coil. A function generator generates alternating current. A program adjuster generates a control signal that commands the function generator. At least one of the first and second iron core support members has a temperature sensor, and the measured value of the temperature sensor is input to the program controller, which feedback controls the AC power according to the measured value of the temperature sensor.

IPC Classes  ?

• H05B 6/36 - Coil arrangements
• H01F 41/02 - Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils or magnets
• H05B 6/04 - Sources of current
• H05B 6/06 - Control, e.g. of temperature, of power

Abstract

In order to achieve high accuracy of detecting a sign of cooling performance deterioration, a sign detection system includes: a pre-processing unit acquiring operation data of a time series about a cooling target apparatus and extracting features from the operation data, the cooling target apparatus including a temperature rise source and a cooling unit cooling the temperature rise source, and a sign detection unit diagnosing cooling performance of the cooling unit, based on an output obtained by inputting the features extracted from the operation data for diagnosis to a sign detection model, the sign detection model being constructed using training data generated based on the features extracted from the operation data for training and a label indicating a state of the cooling performance. The sign detection model is constructed using the training data generated based on the features extracted from the operation data including the operation statuses corresponding to the being operating and the being on standby. When diagnosing the cooling performance, the sign detection unit inputs the features extracted from the operation data including only the operation statuses corresponding to the being operating, to the sign detection model.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring
• G06F 11/30 - Monitoring

Abstract

This motor control device performs position sensorless vector control using a forward salient-pole model of a synchronous reluctance motor. The motor control device comprises: a velocity control calculation unit that calculates a current command value on the basis of the difference between a velocity command value and a velocity estimation value, the velocity estimation value, and a limit value of a q-axis current command value that is changed according to a proportional gain of velocity estimation; a vector control calculation unit that calculates a voltage command value on the basis of a current detection value, the current command value, and the velocity estimation value; a phase error estimation calculation unit that calculates an estimation value of a phase error on the basis of the voltage command value, the velocity estimation value, and the current detection value; and a frequency and phase estimation calculation unit that calculates the velocity estimation value and a phase estimation value on the basis of the estimation value of the phase error and the velocity command value. Thus, it is possible to automatically select and set parameters related to high efficiency and high responsiveness in the synchronous reluctance motor using a sensorless control system.

IPC Classes  ?

• H02P 21/22 - Current control, e.g. using a current control loop
• H02P 25/08 - Reluctance motors
• H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters

Abstract

In an inkjet recording device that uses a pigment-based ink, an ink device is provided in which ink sticking in an ink path and the precipitation of pigment components in an ink container, which occur when printing is not performed over a long period, can be suppressed, and the pigment-based ink can be jetted in a short time at the restart of the printing. The inkjet recording device uses a pigment-based ink. A control section 7 executes a printing mode performing a printing operation and a rest mode not performing the printing operation. In the rest mode, the control section 7 forcibly performs the stirring of a pigment-based ink 68A in an ink container 31 and the circulation of the ink in an ink circulation path not including a printing head (S300) or the circulation of the ink in an ink circulation path including the printing head (S400). Accordingly, it is possible to suppress ink sticking in the ink circulation path and the precipitation of pigment components in an ink container, which occur when printing is not performed over a long period, and to jet the pigment-based ink in a short time at the restart of the printing.

IPC Classes  ?

• B41J 2/185 - Ink-collectorsInk-catchers
• B01F 33/45 - Magnetic mixersMixers with magnetically driven stirrers
• B01F 35/22 - Control or regulation
• B01F 101/35 - Mixing inks or toners
• B41J 2/035 - Ink jet characterised by the jet generation process generating a continuous ink jet by electric or magnetic field
• B41J 2/175 - Ink supply systems
• B41J 2/20 - Ink jet characterised by ink handling for preventing or detecting contamination of compounds

Abstract

A scroll-type fluid machine includes a casing that houses an orbiting scroll and a plurality of auxiliary crank mechanisms, a leg section that is disposed on a radially outer edge portion of the casing and supports the casing, and a reinforcing rib that extends on the leg section in the axial direction. The casing includes bearing bosses that each house a casing-side bearing of the auxiliary crank mechanism. The bearing boss has an outer circumferential surface and an end surface that form part of the outer surface of the casing. The reinforcing rib extends from the leg section to the bearing boss so as to be connected to the leg section and to the outer circumferential surface and the end surface of the bearing boss.

IPC Classes  ?

• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

Provided are a compressor and a management system that are capable of extending the operating life of a compressor while easing the burden on a user.　A compressor 1 comprises a compressor body 3 that compresses air, and a control device 17 that controls the operation of the compressor body 3. If operation of the compressor body 3 is resumed when the stop time of the compressor body 3 is greater than or equal to a preset time A, the control device 17 executes a diagnostic operation mode which determines the presence or absence of abnormalities while reducing the load on the compressor body 3 relative to a regular operation mode.

IPC Classes  ?

• F04B 49/02 - Stopping, starting, unloading or idling control
• F04B 49/10 - Other safety measures
• F04B 51/00 - Testing machines, pumps, or pumping installations

Abstract

To provide a package type compressor capable of recovering carbon dioxide in the air while reducing pressure loss. Provided is a package type compressor including: a compressor main body that compresses air; a cooler that cools, by heat exchange with air, compressed air discharged from the compressor main body; a housing that houses the compressor main body and the cooler; at least one first air inlet that is formed in the housing and takes in the air before being compressed by the compressor main body and the air before being used by the cooler; and a first air outlet that is formed in the housing and discharges air after being used by the cooler, in which at least one adsorption material for adsorbing carbon dioxide in the air, and at least one holding section for holding the adsorption material so as to be spaced apart outward with respect to at least one of the first air inlet and the first air outlet are provided.

IPC Classes  ?

• B01D 53/04 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
• B01D 53/26 - Drying gases or vapours

Abstract

To provide a scroll-type fluid machine capable of improving the workability of connection between a discharge cylinder of a fixed scroll member and a discharge pipe or a joint. A scroll-type compressor includes: a fixed scroll member that has an end plate, a wrap, cooling fins, and a discharge cylinder; an orbiting scroll member that has an end plate and a wrap; a driving shaft that causes the orbiting scroll member to orbit relative to the fixed scroll member; and a fixed cover that is attached to a tip side of the cooling fins of the fixed scroll member. The discharge cylinder 2 of the fixed scroll member extends from the end plate of the fixed scroll member beyond an inner surface of the fixed cover.

IPC Classes  ?

• F04C 29/04 - HeatingCoolingHeat insulation
• F04C 18/02 - Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents

Abstract

A method for controlling an inkjet recording device includes providing a print head and providing a main body. The method also includes controlling, when the print head is set in the head cleaning unit, the supply of the ink to the nozzle and the recovery of the discharged ink from the gutter, wherein the gutter is located between the nozzle and recovery container. The method also includes providing a plurality of ink circulation path. The method also includes connecting, a pump to the circulation paths, and circulating, using the pump, the ink in a state where the print head is set in the head cleaning unit.

IPC Classes  ?

• B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
• B41J 2/08 - Ink jet characterised by jet control for many-valued deflection charge-control type
• B41J 2/165 - Prevention of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
• B41J 2/175 - Ink supply systems
• B41J 2/185 - Ink-collectorsInk-catchers

Abstract

Provided is an energy storage device using compressed air and connected to a pneumatic device driven by air pressure, and the energy storage device comprises: an electric motor driven by electric power from a power transmission/distribution system to which a regenerative energy power generation device is connected; a compressor driven by the electric motor; an accumulator tank for storing compressed air compressed by the compressor as compressed air or liquid air; an expander driven by the compressed air stored in the accumulator tank; a power generator driven by the expander; a pipe through which the compressed air passes; a solenoid valve provided in the pipe; a pressure sensor for detecting a pressure of the pipe; and a control device for controlling the solenoid valve. The pipe includes a pneumatic supply pipe connected to the pneumatic device. The control device controls the solenoid valve to drive the expander by compressed air exceeding a predetermined pressure, and controls the solenoid valve to supply compressed air equal to or lower than the predetermined pressure from the pneumatic supply pipe to the pneumatic device.

IPC Classes  ?

• H02J 15/00 - Systems for storing electric energy
• F02C 6/06 - Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output providing compressed gas
• F02C 6/16 - Gas-turbine plants having means for storing energy, e.g. for meeting peak loads for storing compressed air
• H02J 3/28 - Arrangements for balancing the load in a network by storage of energy

Abstract

A screw fluid machine that suppresses power loss by preventing a residual volume from being generated at a discharge-side end face while thinning a tooth tip of a male rotor is provided. In a screw fluid machine in which a male rotor 2 including a plurality of teeth and a female rotor corresponding to the male rotor 2 are rotated to compress and convey a fluid, when viewed in an axial direction, a cross-sectional tooth profile 21d in a first section in the vicinity of an end portion on a discharge side of the male rotor 2 is formed thick so as to be located outside a pitch point-centered circle CP at a tooth tip and on an advancing surface side of the tooth tip, and a cross-sectional tooth profile 21s in a second section in the vicinity of an end portion on a suction side is formed thin so as to be located inside the pitch point-centered circle CP. A cross-sectional tooth profile of the male rotor 2 between the first section and the section in the axial direction is configured to continuously change from a second cross-sectional shape to a first cross-sectional shape.

IPC Classes  ?

• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
• F04C 29/02 - LubricationLubricant separation

Abstract

Provided is a rotating electrical machine that obviates the need for a welding step in the bonding of a distal end section and that achieves an improvement in productivity. The rotating electrical machine comprises a stator coil in which a first rectangular wire and a second rectangular wire fit together. The first rectangular wire has a protruding part and the second rectangular wire has an indented part. The protruding part and the indented part are configured so as to fit together by insertion. The protruding part has projections and the indented part has grooves on surfaces, from among surfaces constituting the protruding part and the indented part, that run along a direction of extension of the first rectangular wire and the second rectangular wire. A pair of projections and a pair of grooves are provided to serve as the projections and the grooves.

IPC Classes  ?

• H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
• H02K 15/064 - Windings consisting of separate segments

Abstract

An appearance inspection system 1 comprises: a photographing part 10 for photographing an inspection object while changing photographing conditions; illumination parts 20 for irradiating the inspection object with irradiation light; a diagnosis part 80 for diagnosing appearance of the inspection object on the basis of the image photographed by the photographing part 10, using a trained model 70 trained for each photographing condition on the basis of a non-defective inspection object; and an inspection order determination part 100 for determining an inspection order in which the photographing conditions are changed, on the basis of occurrence frequency of defects for each photographing condition. As a result, it is possible to provide an appearance inspection system, a control device, and a control method that suppress an increase in time required for a pass/fail determination of an inspection object, even if the number of inspection items for defects to be detected increases.

IPC Classes  ?

• G01N 21/88 - Investigating the presence of flaws, defects or contamination
• G06N 20/00 - Machine learning
• G06T 7/00 - Image analysis
• G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks

Abstract

Provided is a rotating electric machine capable of reducing eddy current loss and hysteresis loss generated at a part where an electromagnetic steel sheet is fastened.　In the rotating electric machine comprising a stator and a rotator provided inside the stator, the stator has a stator core, a stator slot disposed in the circumferential direction of the stator core, and a stator winding disposed in the stator slot, and the rotor has a central shaft, a rotor slot, and a rotor conductor. The stator has a low-resistance fastening member on the outer periphery of the stator core, and the low-resistance fastening member has a fastening part provided outside the stator and a stator conductor provided inside the stator, wherein electric resistance of the fastening part is smaller than electric resistance of the stator conductor.

IPC Classes  ?

• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures

Abstract

According to the present invention, an inventory management system that performs inventory management of a plurality of consumables that include ink and intensifier that are to be used by an inkjet printer comprises an information reading device that reads RFID information that includes at least a lot number and an expiration date from RFID tags on the consumables, an information management device that stores RFID information for the consumables that are installed and in use at the inkjet printer and RFID information for each of a plurality of the consumables that are being stored as inventory at the location where the inkjet printer is installed, and a control device that controls the operation of the inkjet printer. When the consumables that are installed at the inkjet printer are to be replaced, the control device presents the lot numbers of consumables that are recommended for the replacement on the basis of the RFID information for the consumables that are stored as inventory. The present invention thereby makes it possible to more appropriately manage the expiration dates of consumables such as ink and intensifier.

IPC Classes  ?

• G06Q 10/087 - Inventory or stock management, e.g. order filling, procurement or balancing against orders

Abstract

Provided is a three-level power conversion device capable of suppressing a surge voltage generated in association with commutation. This power conversion device comprises a first circuit board (301), a second circuit board (302), and a third circuit board (303). The first circuit board (301) has first circuit board sections, equal in number to the number of phases, in which an upper arm circuit is configured, and each first circuit board section has a first flat-plate conductor that serves as wiring in the upper arm circuit. The second circuit board (302) has second circuit board sections, equal in number to the number of phases, in which a clamp circuit is configured, and each second circuit board section has a second flat-plate conductor that serves as wiring in the clamp circuit. The third circuit board (303) has third circuit board sections, equal in number to the number of phases, in which a lower arm circuit is configured, and each third circuit board section has a third flat-plate conductor that serves as wiring in the lower arm circuit. The first circuit board, the second circuit board, and the third circuit board are stacked on each other such that the second circuit board is positioned between the first circuit board and the third circuit board.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H02M 7/487 - Neutral point clamped inverters

Abstract

A power conversion device (11) comprises: a temperature history calculation unit (31) that, on the basis of a prescribed bonding section temperature function (Ftj) which correlates with a bonding section temperature (Tj) pertaining to power semiconductor devices (Q1-Q6), acquires information about a bonding section temperature history (Tjr) pertaining to the power semiconductor devices (Q1-Q6); and a damage calculation unit (39) that, on the basis of the bonding section temperature history (Tjr) acquired by the temperature history calculation unit (31), calculates a degree of damage (DD) pertaining to the power semiconductor devices (Q1-Q6), wherein the damage calculation unit (39) calculates the degree of damage (DD) pertaining to the power semiconductor devices (Q1-Q6) for each failure rate (FR) across a plurality of patterns, by referring to a tolerance characteristic table (41) in which tolerance characteristic data pertaining to the power semiconductor devices (Q1-Q6) is associated with each failure rate (FR) across the plurality of patterns. Thus, the degree of damage pertaining to the power semiconductor devices (Q1-Q6) is quantitatively presented to a user in a manner that is easy to understand.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H03K 17/00 - Electronic switching or gating, i.e. not by contact-making and -breaking

Abstract

2222 adsorption amount estimation formula learned in advance by using operation information of a crane.

IPC Classes  ?

• B66C 13/00 - Other constructional features or details
• B66C 17/00 - Overhead travelling cranes comprising one or more substantially-horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports

Abstract

Provided is a drain amount estimation device capable of quickly estimating the amount of drain mixed in oil.　This drain amount estimation device for estimating the amount of drain mixed in oil that exchanges heat with a cooling medium by an oil cooler 8 comprises: an oil temperature sensor 11A for detecting the oil temperature on the upstream side of the oil cooler 8; an oil temperature sensor 11B for detecting an oil temperature on the downstream side of the oil cooler 8; and a calculation device 12 for calculating the change amount ΔTA of the oil temperature caused by the oil cooler 8 on the basis of detection results of the oil temperature sensors 11A, 11B, and calculating the amount of drain mixed in the oil on the basis of the change amount ΔTA of the oil temperature.

IPC Classes  ?

• F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems
• F25B 1/00 - Compression machines, plants or systems with non-reversible cycle

Abstract

The present invention comprises: a first beam splitter that splits a laser beam into a main beam and a sub-beam; a sub-beam scanning unit formed from a plurality of two-mirror pairs that cause the sub-beam to scan; a second beam splitter that transmits the main beam and reflects the sub-beam; a main beam scanning unit that causes a multi-beam formed from the main beam having passed through the second beam splitter and the sub-beam to scan across a printing target; and a control unit that controls the operations of the sub-beam scanning unit and the main beam scanning unit. The control unit controls the main beam and the sub-beam on the basis of the scanning direction of the multi-beam, which changes on the printing target, and controls the sub-beam scanning unit so that the main beam and the sub-beam are arranged side by side with respect to the changing scanning direction of the multi-beam.

IPC Classes  ?

• B23K 26/00 - Working by laser beam, e.g. welding, cutting or boring
• B23K 26/067 - Dividing the beam into multiple beams, e.g. multi-focusing
• B23K 26/082 - Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head

Abstract

This fluid machine comprises: a compressor body 1; a compressor body 2; an intake passage 12 that is connected to an intake port of the compressor body 1; air passages 14, 16, 18, 20 that allow communication between a discharge port of the compressor body 1 and an intake port of the compressor body 2; a three-way valve 32 that is provided to the air passages; an intake passage 13 that is connected to one port of the three-way valve 32; a low-pressure air tank 51 that is connected to an air passage 19 that branches from the air passages on the upstream side of the three-way valve 32; a high-pressure air tank 52 that allows communication between a discharge port of the compressor body 2 and air passages 21, 23, 25, 27; a first opening/closing valve that is provided to the air passage 19; a three-way valve 36 that is provided to the air passages 21, 23, 25, 27; an air passage 26 that connects at least one port of the three-way valve 36 and the air passage 19 on the downstream side of the first opening/closing valve; a three-way valve 36 that is provided to the air passages 21, 23, 25, 27; a controller 5 that is connected to a motor 3 for operating the compressor body 1; a controller 6 that is connected to a motor 4 for operating the compressor body 2; and a control unit 7 that controls the controller 5 and the controller 6.

IPC Classes  ?

• F04D 17/14 - Multi-stage pumps with means for changing the flow-path through the stages, e.g. series/parallel
• F04B 41/06 - Combinations of two or more pumps
• F04D 27/00 - Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids

Abstract

To provide a power conversion device capable of making miniaturization and a stable operation compatible with each other. Therefore, a smoothing capacitor 21 outputs a high-side potential of a DC voltage, and a smoothing capacitor 22 is connected in series with the smoothing capacitor 21 and outputs a low-side potential of the DC voltage. An inverter circuit 103 converts the DC voltage output from the smoothing capacitors 21 and 22 into an AC voltage. A control circuit 104 controls the inverter circuit 103. The inverter circuit 103 is mounted on a main circuit board 61. Each of the smoothing capacitors 21 and 22 is arranged such that an axial direction, which defines its longest size, is substantially parallel to a plane direction of the main circuit board 61. The smoothing capacitor 21 is arranged at a position farther away from the control circuit 104 than the smoothing capacitor 22.

IPC Classes  ?

• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output

Abstract

A liquid-cooled screw compressor (100) that takes in a gas and generates a compressed gas includes a screw rotor (2, 3), a casing (1) that stores the screw rotor (2, 3) and forms a working space (C) together with the screw rotor (2,3), and a cartridge (6) that is a separate member from the casing (1). A liquid feed path (7) that supplies a liquid to the working space (C) is formed by the casing (1) and the outer surface of the cartridge (6).

IPC Classes  ?

• F04C 29/04 - HeatingCoolingHeat insulation
• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type

Abstract

An encoder model and a decoder model, which are machine learning models, are used for inspection of the inspection target. The encoder model is a model in which inspection target data is input and an abnormality degree of the inspection target is output. The decoder model is a model in which an OK/NG value, which is a value indicating whether the inspection target is normal or abnormal, and a feature amount of data of the inspection target are input, and when the input OK/NG value indicates an abnormality, restored data of the inspection target based on the input feature amount is output.

IPC Classes  ?

• G06T 7/00 - Image analysis

Abstract

This inkjet recording device comprises: a nozzle 21 that discharges ink; an electric charging electrode 22 that electrically charges the ink discharged from the nozzle 21; a deflection electrode 23 that deflects the electrically charged ink; an electric charging voltage control unit 30 that controls an electric charging voltage applied to the ink by the electric charging electrode; a sensor 26 for obtaining the discharge rate of the ink discharged from the nozzle; and a control unit 10 that controls the electric charging voltage control unit 30 to control printing on an object to be printed on. The control unit 10 obtains the discharge rate of the ink discharged from the nozzle 21 by using the sensor 26, and, on the basis of the obtained discharge rate, controls a timing at which to electrically charge the ink by the electric charging electrode 22.

IPC Classes  ?

• B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
• B41J 2/01 - Ink jet
• B41J 2/085 - Charge means, e.g. electrodes
• B41J 2/195 - Ink jet characterised by ink handling for monitoring ink quality

Abstract

The present invention extracts equipment that is operating inefficiently and/or deteriorated equipment from acquired operation data. According to the present invention, in a method for diagnosing settings of fluid machinery on the basis of information detected by a sensor installed in the fluid machinery, at least one of a load factor of the fluid machinery, a set pressure and a discharge pressure, an ambient temperature, a discharge temperature, a count of warning alarms issued, and time of operation, is input as analysis information, determination is made from the analysis information regarding whether or not there is room for improvement in settings of the fluid machinery, the number of days in which determination is made that there is room for improvement is counted over a predetermined period, an improvement settings plan for the fluid machinery based on the analysis information is created when the count exceeds a threshold value, and the improvement settings plan is provided to a user of the fluid machinery.

IPC Classes  ?

• G05B 23/02 - Electric testing or monitoring

Abstract

To provide a packaged air-cooled air compressor capable of recommending cooler cleaning at the proper timing while controlling cost increase. The package-type, air-cooled air compressor has two cooling paths to the air-cooled cooler and motor, two cooling air intake ports where these cooling paths take in outside air, a fan and outlet that collectively exhaust cooling air after cooling the cooler and motor to the outside, and a bearing located at both ends of the motor shaft. The controller calculates the temperature difference between the bearings located upstream (anti-load side) and downstream (load side) of the motor shaft in the cooling air flow direction, and determines that the cooler is clogged if the temperature difference is less than a threshold value.

IPC Classes  ?

• F04C 28/28 - Safety arrangementsMonitoring
• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
• F04C 29/04 - HeatingCoolingHeat insulation

Abstract

Provided is a data acquisition method in which a language model can generate an accurate answer. This data acquisition method executed by one or more computer devices connected to one or more language models comprises: generating, by a computer device, a prompt for identifying a database including information related to a question content of a user; inputting, by the computer device, the prompt to a language model; and receiving, by the computer device and from the language model, at least one of the location of the database, the name of the database, the format of the database, and information of a column of the database.

IPC Classes  ?

• G06F 16/28 - Databases characterised by their database models, e.g. relational or object models
• G06F 16/90 - Details of database functions independent of the retrieved data types

Abstract

The present invention efficiently sterilizes a safety cabinet. An indoor exhaust-type safety cabinet equipped with two fans, a clean air supply fan to a working chamber and an exhaust fan to a inside a clean room, wherein a sterilization mode changeover switch is provided or information of a sterilization mode can be input, and the output of the air supply fan is reduced in the sterilization mode in comparison to during normal operation.

IPC Classes  ?

• B01L 1/00 - EnclosuresChambers
• C12M 1/00 - Apparatus for enzymology or microbiology

Abstract

The purpose of the present invention is to provide a cap for a replenishing container and an inkjet recording device capable of reducing an operation force required for attaching/detaching a replenishing container while suppressing contamination caused by ink or a solvent when attaching/detaching the replenishing container for replenishing ink or a solvent. For this purpose, a replenishment container 301 comprises: a storage member 311 having a cylindrical tip part 322 extending from one end part of a storage chamber 321 and having an opening part formed at the tip; a first plug member 312 for sealing the opening part; a lid member 313 in which a first through-hole 353 concentric with the tip part 322 is formed and which fixes the first plug member 312 to the tip part 322; and a cylindrical seal member 314 in which a second through-hole 361 concentric with the first through-hole 353 is formed. The smallest inner diameter of the second through-hole 361 is smaller than the inner diameter of the first through-hole 353, and an annular deformation groove 319 concentric with the second through-hole 361 is formed on a bottom surface part 317 or an upper surface part 318 of the seal member 314.

IPC Classes  ?

• B41J 2/175 - Ink supply systems

Abstract

The present invention efficiently sterilizes a safety cabinet. An indoor exhaust type safety cabinet having two fans, a clean air supply fan to a working chamber and an exhaust fan to inside a clean room, wherein a sterilization mode changeover switch operated at the time of sterilization in the clean room or a changeover signal is provided, and a slit or an opening/closing type damper mechanism directly connected to an exhaust flow passage is provided in the upper part of the back surface of the working chamber.

IPC Classes  ?

• B01L 1/00 - EnclosuresChambers
• A61L 2/20 - Gaseous substances, e.g. vapours
• C12M 1/00 - Apparatus for enzymology or microbiology

Abstract

Efficient recovery of thermal energy. An exhaust heat recovery system comprising: a plurality of gas compressors; a exhaust heat recovery equipment; and a controller, wherein further comprising a exhaust heat recovery path connecting the plurality of gas compressors and the exhaust heat recovery equipment, and the plurality of gas compressors can select whether or not to use the exhaust heat recovery path based on instructions from the controller, the controller compares the set required water temperature with the supply water temperature, which is the temperature of the water supplied from the exhaust heat recovery equipment to the outside, and at least one of the plurality of gas compressors is instructed to use the exhaust heat recovery path when the supply water temperature is lower than the required water temperature.

IPC Classes  ?

• F22D 1/18 - Feed-water heaters, e.g. preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and heated indirectly
• F04B 39/06 - CoolingHeatingPrevention of freezing

Abstract

Provided is an oil feed type air compressor capable of detecting the amount of drained liquid without separating drained liquid and oil.　The oil feed type air compressor comprises: a compressor body 2 for compressing air while injecting oil into an operation chamber; a separator 5 for separating oil from the compressed air discharged from the compressor body 2; an oil cooler 10 for cooling the oil separated in the separator 5 and supplying the oil to the operation chamber of the compressor body 2; a temperature sensor 14 for detecting the temperature of the oil separated in the separator 5; and a control device 9 for calculating the amount of drain mixed in the oil. The control device 9 calculates the increase amount of the temperature of the oil, on the basis of a detection result of the temperature sensor 14, when a predetermined time has elapsed after the compressor body 2 activates, and calculates the amount of the drain on the basis of the increase amount of the temperature of the oil.

IPC Classes  ?

• F04B 39/16 - FiltrationMoisture separation

Abstract

Provided are a compressor control system capable of achieving energy saving, and a compressor control method. This compressor control system comprises: a compressor for compressing gas; a sequencing control panel; and a pressure gauge for measuring a terminal pressure of a piping system that is connected to the compressor. A packaged compressor has a measurement unit, a determination unit, a setting unit, a control unit, and the compressor. The sequencing control panel has a measurement unit and an analog output unit. The sequencing control panel sends a first pressure that is received at the measurement unit from the pressure gauge, to the measurement unit through the analog output unit in the form of an analog signal. In the packaged compressor, the measurement unit sends the received analog signal to the determination unit as a pressure, the determination unit determines a relationship between the pressure and a threshold value which is stored in advance in the setting unit, and the control unit carries out compression control by controlling the compressor on the basis of the determination result derived by the determination unit.

IPC Classes  ?

• F04B 49/06 - Control using electricity
• F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids

Abstract

The present invention achieves a more lightweight rotor of a rotating electrical machine, and reduces the magnetic resistance of the q-axis while reducing the amount of rotor deformation during high-speed rotation. A plurality of magnet insertion holes 126a-126c of a rotator are located line-symmetrically about the d-axis, which is the magnetic pole central axis. On the inner peripheral side of the magnet insertion holes 126a, 126c close to the q-axis, lightening holes 128, 129 shaped to have curves are formed. The cross-sectional shapes of the lightening holes 128, 129 are arranged such that a nearest point 70 from a rotation axis A1 coincides with a curved portion having the largest curvature. The magnet insertion holes 126a, 126c and a straight part of the lightening holes are arranged to be at a constant distance S for the entirety of the opposing portions thereof, wherein an outermost peripheral position 50 on the side forming a lightening hole is positioned farther to the outer periphery than an end part 60 closest to the central axis of the rotator on the side forming a magnet insertion hole.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
• H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Abstract

A rotary motor comprises a stator; and a rotor having a core with a plurality of permanent magnets embedded therein and held inside the stator for rotation around a rotation axis, wherein the magnets are in the outer circumference of the core, spaced apart in a circumferential direction, and have magnetic poles at both ends in the circumferential direction. The core has a plurality of lightening holes in the circumferential direction on the rotation axis side of the permanent magnets; each hole having a bottom wall surface extending in the circumferential direction on the rotation axis side, an outer circumferential wall surface on the outer circumferential side, and a side wall surface between the bottom wall surface and the outer wall surface; and the outer wall surface has an inclined portion that approaches the rotation axis as it moves from the center of the permanent magnets toward the magnetic pole.

IPC Classes  ?

• H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]

Abstract

The present invention corrects a local route in a local region on the basis of an entire route and a local parameter.

IPC Classes  ?

• G05D 1/622 - Obstacle avoidance
• G05D 1/43 - Control of position or course in two dimensions
• G05D 1/246 - Arrangements for determining position or orientation using environment maps, e.g. simultaneous localisation and mapping [SLAM]

Abstract

Provided is a rotary electric machine that incorporates busbars and has a simple structure that has good workability. A rotary electric machine according to the present invention includes a coil that is wound in stator slots. A crossover plate that is provided on the coil end axial direction outside comprises a plurality of busbar rows that comprise a plurality of busbars that are arranged in a row in the circumferential direction. All of the busbar rows include busbars of different phases.

IPC Classes  ?

• H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors

Abstract

To provide a system whereby an air compressor that cannot be paused for long durations can autonomously determine the update timing of software according to the load state of the air compressor. As a means therefor, a compressor system is used, the compressor system including: a compressor body that generates compressed air; a motor that drives the compressor body; and a control unit that stores a program and controls the motor according to the program. The control unit calculates the time required for updating the program and then updates the program if it is determined that the time required for the update can be secured during no-load operation of the compressor body.

IPC Classes  ?

• F04B 49/02 - Stopping, starting, unloading or idling control
• F04B 41/00 - Pumping installations or systems specially adapted for elastic fluids

Abstract

A technique adjusts a control parameter between a motion control system and a low-order system for motor control. A controller inputs a motion control deviation based on computation of a motion control command and a motion control response into a first control device, and outputs a servo control command based on a first control gain. A servo amplifier as a motor control apparatus includes a second control device, a power converter, and a control gain estimator. The motor control apparatus inputs a signal based on the servo control command and the motion control response into the second control device, inputs a signal output from the second control device into the power converter, and supplies a motor with a signal from the power converter. The control gain estimator inputs the servo control command and the motion control deviation or the motion control command therein and estimates the first control gain.

IPC Classes  ?

• H02P 23/00 - Arrangements or methods for the control of AC motors characterised by a control method other than vector control
• H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage

Abstract

There included are a rotor (3), a stator core (21) having a plurality of slots (21c) between the rotor (3) and a back yoke (21a), resin bobbins (22) each of which includes a plurality of coil insertion holes (22a) arranged along a radial direction of the stator core (21) and is fit into the slot (21c), and a first gap hole (22ca) provided to a side wall (22c) that is closest to the back yoke (21a) among side walls of the bobbin (22).

IPC Classes  ?

• H02K 1/16 - Stator cores with slots for windings
• H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
• H02K 3/32 - Windings characterised by the shape, form or construction of the insulation

Abstract

A power regeneration converter is disposed between an inverter outputting a three-phase alternating current (AC) to an electric motor and a three-phase AC power source which is an input system, and supplies induced electric power generated by the motor to the three-phase AC power source, wherein a control unit calculates a three-phase AC voltage target value for performing PWM based on a three-phase AC voltage of the input system detected by an AC voltage detection unit, a three-phase AC detected by an AC detection unit, and a direct current (DC) voltage between the inverter and the power regeneration converter detected by a DC voltage detection unit, and controls the DC voltage between the inverter and the power regeneration converter based on the calculated three-phase AC voltage target value. An output DC voltage is maintained, overmodulation, noise, switching loss, heat generation, and insulation degradation of a load device are decreased.

IPC Classes  ?

• H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion
• H02M 1/12 - Arrangements for reducing harmonics from AC input or output
• H02M 1/14 - Arrangements for reducing ripples from DC input or output
• H02M 7/79 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output with possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal

Abstract

This bearing measurement system comprises a first positioning unit that includes a first GNSS antenna and a first GNSS module, a second positioning unit that includes a second antenna and a second GNSS module, and a communication device. The first positioning unit calculates first position information from a GNSS signal by using the first GNSS module, and transmits the first position information to the communication device through digital communication. The second positioning unit calculates second position information indicating the position of the second antenna from the GNSS signal by using the second GNSS module, and transmits the second position information to the communication device through digital communication. The communication device calculates bearing information on the basis of the first position information and the second position information.

IPC Classes  ?

• G01S 19/53 - Determining attitude

Abstract

The present invention easily realizes measures for remote monitoring of an apparatus. This information collection device has, in a housing, a power supply unit, a communication unit, a control unit, and a terminal block. Various information from the terminal block can be aggregated by the control unit and transmitted by the communication unit.

IPC Classes  ?

• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
• H04Q 9/00 - Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

The present invention includes: a stator core (21) having a slot (21a); a bobbin (22) fitted in the slot (21a) and having a through hole (22c) penetrating in an axial direction of the stator core (21); a coil (23) inserted in the through hole (22c); a plurality of protrusions (22e) that protrude from at least one of an inner periphery of the through hole (22c) and an outer periphery of the coil (23), and guide the position of the coil (23) in the through hole (22c); and a resin filled on the periphery of the coil (23) in the through hole (22c).

IPC Classes  ?

• H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
• H02K 1/16 - Stator cores with slots for windings
• H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Abstract

The invention provides an inkjet marking apparatus and an inkjet marking system enabling it to remotely perform maintenance management including a print head cleaning process and the like. There is disclosed an inkjet marking apparatus equipped with a print head including a nozzle which spouts out ink while the ink turns into particles, a charging electrode which gives charge to ink particles spouted out, a deflecting electrode which deflects the charged ink particles, and a gutter which collects non-used ink; a main unit equipped with an ink supply path to supply ink in an ink container to the print head, an ink collection path to collect ink not used for printing into the ink container, a solvent supply path to supply a solvent in a solvent container to the ink container, and flow rate regulators which regulate flows of the ink and the solvent in these respective paths; a main unit controller which controls operation of the flow rate regulators in the main unit and the print head; and a head receptacle unit including a head holding part to set and hold the print head secured in place and a print head detector which detects that the print head has been set secured in place, wherein the main unit controller starts jetting of the ink from the nozzle when a preset start time comes, provided that it is detected that the print head has been set secured in the head receptacle unit.

IPC Classes  ?

• B41J 2/02 - Ink jet characterised by the jet generation process generating a continuous ink jet
• B41J 2/085 - Charge means, e.g. electrodes
• B41J 2/09 - Deflection means
• B41J 2/185 - Ink-collectorsInk-catchers
• B41J 3/46 - Printing mechanisms combined with apparatus providing a visual indication
• B41J 29/393 - Devices for controlling or analysing the entire machine
• G06Q 10/0631 - Resource planning, allocation, distributing or scheduling for enterprises or organisations

Abstract

The present invention improves the ease of maintenance work for a safety work device. This safety work device has: a main section that is provided with a work space for performing work; and an exhaust chamber section that forms an exhaust flow passage for air in the work space. The exhaust chamber section is provided to the back surface of the main section. The safety work device is installed so as to face a wall surface body. The main section is installed on the front side of the wall surface body, and the exhaust chamber section is installed on the rear side of the wall surface body so as to protrude therefrom.

IPC Classes  ?

• F24F 7/06 - Ventilation with ducting systems with forced air circulation, e.g. by fan
• B01L 1/00 - EnclosuresChambers
• F24F 7/10 - Ventilation with ducting systems with forced air circulation, e.g. by fan with air supply, or exhaust, through perforated wall, floor or ceiling

Abstract

A gas compressor 100 is provided with a suction duct 2, a compressor 3, and a plurality of noise reduction portions 230 for reducing noise generated by operation of the compressor 3. The noise reduction portions 230 are provided inside the suction duct 2 and at different positions in the extending direction of the suction duct 2. One side of a rectangular cross-section of each noise reduction portion 230 has the cross-sectional length different from the length of one side of a rectangular cross-section of the suction duct 2. In each noise reduction portion 230, the cross-sectional length varies according to the wavelength of noise corresponding to a plurality of frequencies at which the sound pressure level of the noise reaches a peak. The cross-sectional length is longer than half the wavelength of each noise and shorter than one wavelength.

IPC Classes  ?

• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04C 29/06 - Silencing

Abstract

Provided is a power conversion device comprising: a first voltage command generation unit that generates a first voltage command on the basis of a predetermined rated voltage; an angular frequency command generation unit that generates an angular frequency command for alternating current power on the basis of an active power command input from the outside; a phase command generation unit that generates a phase command on the basis of the angular frequency command; a current command generation unit that generates a current command for the alternating current power on the basis of the phase command and the first voltage command; a harmonic current command generation unit that generates a harmonic current command; and a current control unit that generates a voltage command for the alternating current power on the basis of the current command generated by the current command generation unit and the harmonic current command generated by the harmonic current command generation unit. The harmonic current command generation unit acquires reference information synchronized with a power system or absolute time information, and determines the phase of the harmonic current command on the basis of the reference information or the time information.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

In the present invention, a power converter comprises an active power command correction unit for obtaining a corrected active power command obtained by correcting an active power command inputted from outside the power converter, a current command generation unit for generating a pre-restriction current command for AC power, a current command restriction unit for generating a current command in which a restriction based on a prescribed limit value is imposed on the pre-restriction current command, a current control unit for generating a voltage command for the AC power on the basis of the current command, and a suppressed power calculation unit for determining the suppressed power suppressed by the AC power due to the restriction, wherein the current command restriction unit generates the current command on the basis of the result from comparing the limit value and a current value obtained by combining active and reactive components of the pre-restriction current command, the suppression power calculation unit calculates the difference between pre-restriction power corresponding to the pre-restriction current command and post-restriction power corresponding to the current command to determine the suppression power, and the active power command correction unit corrects the active power command on the basis of the suppressed power obtained by the suppression power calculation unit.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
• H02J 3/32 - Arrangements for balancing the load in a network by storage of energy using batteries with converting means
• H02J 3/38 - Arrangements for parallelly feeding a single network by two or more generators, converters or transformers

Abstract

Provided is a structure suitable for a gas-insulated switchgear when using an alternative gas for SF6 gas. The gas-insulated switchgear has a pressure vessel, an electric contact provided inside the pressure vessel, and an insulating gas filled in the pressure vessel, wherein the cross-sectional shape of the pressure vessel has a curved surface.

IPC Classes  ?

• H02B 13/035 - Gas-insulated switchgear

Abstract

This invention provides a concept applicable to storage containers in general, and using the concept, provides a small-sized switch at a low cost. This switch has a pressure container provided with an electric contact inside, and has a storage container for storing the pressure container, the storage container being formed so as to cover the pressure container.

IPC Classes  ?

• H02B 13/02 - Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
• H01H 33/56 - Gas reservoirs
• H02B 1/48 - Mounting of devices therein
• H02B 1/56 - CoolingVentilation

Abstract

This facility management system comprises: a wireless communication device which is attached to a facility to be managed and is capable of performing short-range wireless communication with a communication terminal existing in the vicinity; a server in which operation data on an operation state of the facility is stored; and a mobile communication terminal which receives the operation data transmitted from the wireless communication device through the short-range wireless communication and transmits the received operation data to the server through a mobile network. The wireless communication device acquires the operation data for the facility, and transmits at least a part of the acquired operation data to the mobile communication terminal by means of an advertisement signal of the short-range wireless communication.

IPC Classes  ?

• G06Q 50/04 - Manufacturing

Abstract

According to the present invention, a control device that is equipped with an RM socket and an RM interface and periodically performs control processing of a controlled device receives designation of a mode and sets the designated mode. The control device periodically performs a license check to determine whether or not an RM storing license data representing a license for a program to be protected is inserted into the socket and connected to the RM interface. If the license check result is not false, the control device executes the program to be protected in the control processing. If the set mode is a stop mode, which means that the license check be stopped, the control device stops performing the license check.

IPC Classes  ?

• G06F 21/12 - Protecting executable software
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

The present invention comprises: a low-pressure stage compressor body (1); a high-pressure stage compressor body (2) that compresses a gas compressed by the low-pressure stage compressor body (1); intermediate piping (3) connecting the discharge side of the low-pressure stage compressor body (1) and the intake side of the high-pressure stage compressor body (2); a sensor (4) that detects the dew point or the humidity of gas in the intermediate piping (3); supply piping (5) that communicates with the intermediate piping (3) and supplies a drying gas into the intermediate piping (3); and a valve (6) that is provided to the supply piping (5) and in which the opening degree is adjusted in accordance with the detection value of the sensor (4) while compressor operation is stopped.

IPC Classes  ?

• F04B 39/00 - Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups
• F04B 39/12 - CasingsCylindersCylinder headsFluid connections
• F04C 18/16 - Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
• F04C 28/28 - Safety arrangementsMonitoring

Abstract

The present invention provides a power conversion device capable of continuing operation even if instantaneous voltage drop due to a system accident occurs during interconnection operation. To do so, a first voltage command generation unit (307) generates a first voltage command V1 from a reactive power command Qo and reactive power Qout obtained by measurement and calculation. A current command generation unit (308) generates a current command I* from a measurement voltage Vout and the first voltage command V1. A current command restriction unit (309) applies a constraint to and outputs the current command I*. A second voltage command generation unit (310) generates a second voltage command V* from the constrained current command and a measurement current Iout. A control circuit (3) controls a power conversion circuit (2) on the basis of the second voltage command V*.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

This motor control device for controlling a multiple winding magnet motor driven by an inverter comprising a master inverter and one or more slave inverters includes a gain multiplication unit for adjusting the magnitude of a voltage command value of the slave inverter on the basis of current voltage information that is information indicating an operation state of the master inverter. Thus, stable operation can be realized without falling into an overcurrent.

IPC Classes  ?

• H02P 25/22 - Multiple windingsWindings for more than three phases

Abstract

Peroxide-based radical polymerization initiators used in molds are mostly substances unstable to heat and thus have a short usable period due to decomposition even at room temperature. An electrically insulating resin composition according to the present invention is obtained by mixing and stirring a heated epoxy main agent and a heated curing agent, adding a heated radical agent thereto and stirring, and adding a radical polymerization initiator and a reducing agent thereto and stirring.

IPC Classes  ?

• C08L 63/00 - Compositions of epoxy resinsCompositions of derivatives of epoxy resins
• B29C 39/18 - Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressureApparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
• C08F 2/44 - Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
• C08F 4/40 - Redox systems
• C08G 59/42 - Polycarboxylic acidsAnhydrides, halides, or low-molecular-weight esters thereof
• H01B 3/40 - Insulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances plasticsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances resinsInsulators or insulating bodies characterised by the insulating materialsSelection of materials for their insulating or dielectric properties mainly consisting of organic substances waxes epoxy resins
• B29K 63/00 - Use of epoxy resins as moulding material

Abstract

Provided is a gas compression device including: at least one gas compressor (compressor body 1, 2); an oil reservoir (case 3) for storing oil; an oil pump 5 for feeding oil from the oil reservoir to the gas compressor; an oil smoke recovery device 28 for recovering oil smoke from the oil reservoir and extracting oil; an oil accumulation device (device 30) for accumulating the oil extracted by the oil smoke recovery device 28 and discharging oil when the accumulated oil exceeds a predetermined amount; a first path (path 12) that connects the oil reservoir and a suction port of the oil pump 5; a second path (paths 33, 34) that connects the oil smoke recovery device 28 and the oil accumulation device; a third path (paths 36, 37) that connects the oil accumulation device and the first path; and a processor that performs control such that, when solid matter of oil is generated in the third path, a fluid is made to flow into the second path and is discharged from the oil accumulation device to the third path.

IPC Classes  ?

• F04B 39/16 - FiltrationMoisture separation

Abstract

The present invention provides an industrial equipment operation support system capable of efficiently supporting operation of industrial equipment and providing operation support appropriate even to non-experts. The industrial equipment operation support system has a server capable of accessing information on a plurality of pieces of industrial equipment. The server has a general agent and equipment agent for generating an answer to a question received through an input means. The general agent receives input of only a part of the information on the plurality of pieces of industrial equipment for all of the plurality of pieces of industrial equipment, and the equipment agent receives input of the information on the plurality of pieces of industrial equipment for only a part of the plurality of pieces of industrial equipment.

IPC Classes  ?

• G06Q 50/04 - Manufacturing
• G05B 23/02 - Electric testing or monitoring
• G06F 3/16 - Sound inputSound output
• G06N 20/00 - Machine learning

Abstract

A rotating electric machine including: a rotor (200); a stator core (110) having a slot (111) provided with an opening portion (112) on the rotor (200) side; a bobbin (150) that is fitted into the slot (111), and into which a coil (140) is inserted; a projecting portion (152) disposed on the opening portion (112) side in the bobbin (150); and a resin (160) fixing the stator core (110), the coil (140), and the bobbin (150) to each other.

IPC Classes  ?

• H02K 3/48 - Fastening of windings on the stator or rotor structure in slots
• H02K 1/16 - Stator cores with slots for windings
• H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Abstract

According to the present invention, the infiltration of moisture into a slot portion of a stator is blocked and the insulation reliability of a rotary electric machine is improved. This rotary electric machine, having a stator 10 and a rotor that can rotate about a rotary shaft, includes a cylindrical waterproof member 50 provided on the stator 10, which faces the rotor with a gap therebetween, so as to cover the entire inner circumferential surface of the stator. The cylindrical waterproof member 50 is formed as a single seamless body from a first stator core 11a to a second stator core 11b and molded to resins 71 at end sections (51a, 52) on both sides adjacent to coil ends to waterproof slots of the stator 10.

IPC Classes  ?

• H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
• H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
• H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto

Abstract

An equipment maintenance system 1 includes an asset knowledge database 41 in which failure information relating to an equipment failure, the cause of the failure, whether or not a site visit to the equipment by a maintenance person is required when the failure occurs, and the cost of dealing with the failure are managed in association with each other. The equipment maintenance system 1 includes a failure cause presentation unit 33 that calculates, for a failure cause requiring a site visit, among a plurality of failure causes estimated by a failure cause estimating unit 31, a ratio between a first cost for a case in which a maintenance person deals with the failure on the current site visit, and a second cost for a case in which the maintenance person makes another site visit to deal with the failure in subsequent occurrence. On the basis of the ratio calculated by the failure cause presentation unit 33, the equipment maintenance system 1 outputs failure causes that should be addressed preferentially, among the failure causes requiring a site visit.

IPC Classes  ?

• G06Q 10/20 - Administration of product repair or maintenance
• G05B 23/02 - Electric testing or monitoring
• G06F 11/22 - Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing

Abstract

The present invention addresses the problem of evaluating the state of an industrial machine with high accuracy. This machine evaluation system is characterized by comprising an operation history accumulation unit that accumulates the history of the operation of an industrial machine, a maintenance history accumulation unit that accumulates the history of maintenance work for the industrial machine, and an evaluation unit that evaluates the state of the industrial machine on the basis of the history of the operation and the history of the maintenance work, wherein the evaluation unit outputs, as the result of the evaluation, an intended use after the recovery of the industrial machine.

IPC Classes  ?

• G01M 99/00 - Subject matter not provided for in other groups of this subclass
• G06Q 50/04 - Manufacturing

Abstract

This control device 10 for a hoisting machine comprises: a main circuit 31 to which a power supply 102 and an electric motor 1 are connected, an operation circuit 32 to which an operation input device 5 is connected, a power-on/off electromagnetic contactor 21 having a main contact 210 provided in the main circuit 31, and a coil 212 and a sub-contact 211 provided in the operation circuit 32; and an overwinding prevention device 22 which is connected to the operation circuit 32 and is configured to stop energization to the electric motor 1 when the load hook reaches an upper limit position or a lower limit position. When the ON-operation switch 50 is operated, the main contact 210 provided in the main circuit 31 and the sub-contact 211 provided in the operation circuit 32 are closed, and the operation circuit 32 forms a self-holding circuit. When the overwinding prevention device 22 is operated during driving of the electric motor 1, the self-holding circuit formed by the operation circuit 32 is released, the main contact 210 and the sub-contact 211 are opened, and energization to the electric motor 1 is stopped.

IPC Classes  ?

• B66D 3/20 - Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
• B66D 1/46 - Control devices non-automatic electric
• B66D 1/54 - Safety gear

Abstract

The present invention improves the reliability of an amorphous transformer. An amorphous transformer comprising an insulation member having a flat part corresponding to the plane of a coil and folded parts disposed between an inner peripheral surface of the coil and an outer peripheral surface of an amorphous iron core, wherein the folded parts of the insulation member are structured such that the lengths at corner parts are prevented from being shorter than the other parts of the sides.

IPC Classes  ?

• H01F 27/32 - Insulating of coils, windings, or parts thereof
• H01F 27/25 - Magnetic cores made from strips or ribbons
• H01F 37/00 - Fixed inductances not covered by group

Abstract

Provided is a power conversion device (100) which is configured by arranging a plurality of power semiconductor modules close to each other, and in which thermal interferences between the power semiconductor modules during charging and discharging can be leveled. The power conversion device is characterized by comprising: a power conversion unit having a first semiconductor module (106a) and a fourth semiconductor module (106b) through which substantially the same amount of current passes during operation, and a second semiconductor module (106c) and a third semiconductor module (106d) through which substantially the same amount of current passes during operation; and a cooling body (115) on which the first semiconductor module, the second semiconductor module, the third semiconductor module, and the fourth semiconductor module are disposed. A third thermal interference between the second semiconductor module and the third semiconductor module is smaller than a first thermal interference between the first semiconductor module and the second semiconductor module and a second thermal interference between the third semiconductor module and the fourth semiconductor module.

IPC Classes  ?

• H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode