The present disclosure is directed to a method for detecting a leakage in a water piping of a building (1), wherein the method comprises: - logging (507) data of consumption events (84), wherein the data of each of the consumption events (84) comprises a currently accumulated consumption value during the consumption event (84) and an event identification value during the consumption event (84); - mapping (509), during logging the data of a consumption event (84), the currently accumulated consumption value onto one of a plurality of event identification value bins according to the event identification value; and - detecting (511), during logging the data of a consumption event (84), a leakage by identifying the consumption event (84) as a leakage candidate event if the currently accumulated consumption value of the leakage candidate event exceeds an adaptive maximum consumption value threshold being dependent on the event identification value of the leakage candidate event and being based on a confidence interval about an expectation value of the consumption value, wherein the expectation value is statistically derived from previous consumption events (84) that are mapped onto the event identification value bin of the leakage candidate event.
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
2.
PUMP AND METHOD OF DETERMINING A FLOW RATE OF A PUMP
The invention relates to a pump (10), in particular a centrifugal pump, which comprises: a motor (11); and a controller (12) configured to control a speed of the motor (11); wherein the controller (12) comprises a trained machine learning, ML, model (13) being supplied with input data, the input data comprising at least two of: an electrical power intake of the motor (11), a speed of the motor (11), and a differential pressure value. The ML model (13) is configured to output flow value data based on the input data.
The method (101) comprises: - (101) reading an identifier of a first pump, - (102) searching said identifier in a table matching identifiers of pumps with respective pump type codes, - (104) retrieving from the table a pump type code corresponding to said identifier, - (106) inputting said pump type code into a second pump, A plurality of pump performance curves is stored in the second pump. The method (101) further comprises: (108) selecting, among the plurality of pump performance curves, at least one set of pump performance curves corresponding to said pump type code.
A method for controlling a hydronic system having a thermal source and at least a first and a second load circuit connected to the thermal source via a hydraulic system. The system having a changeover valve being configured to selectively activate a flow of heat transfer medium through the first or the second load circuit. Wherein for distributing the required thermal energy to the load circuits in at least one operational condition a duty cycle for the first load circuit is extended, resulting in a shortening of the duty cycle of the second load circuit, and for compensating this shortening of the duty cycle the temperature and/or flow of the heat transfer medium supplied to the second load circuit are adjusted, as well as a hydraulic unit for a hydronic system.
A method for detecting leakage in a fluid system. Some embodiments of the method comprise: receiving a plurality of measured pressure values of a fluid pressure in the fluid system measured at different points in time; computing, from the received pressure values, a first pressure gradient at a first point in time; computing, from the received pressure values, a second pressure gradient at a second point in time, later than the first point in time, wherein the fluid pressure in the fluid system at the first point in time is higher than the fluid pressure in the fluid system at the second point in time; detecting presence of a leakage responsive to the magnitude of the second pressure gradient being smaller than the magnitude of the first pressure gradient.
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
A control device is configured for control of a pump unit or a hydronic system. The control device has an electric interface configured for connecting at least one sensor and at least one electric load with the control device. The electric interface is a three-pin connector, and the control device includes a switching device configured to selectively apply electric signals onto the three pins of the connector, allowing the control device to selectively receive sensor signals from the at least one connected sensor or to supply a voltage to the at least one electric load. A pump unit and a hydronic system have such a control device.
The hydrogeological management system (1) for managing an aquifer (2) comprises: • a pump (6) configured to pump water out of or into the aquifer (2) via at least one well (4), the at least one pump (6) having a pump controller (8), • a Transient Electromagnetic Method (TEM) sensor (10) configured to issue TEM signals representative of at least one parameter in the aquifer (2), and • a well controller (12) configured for communicating with the TEM sensor (10) and the pump controller (8), and for: • analyzing the TEM signals issued during and/or after a defined pumping operation in which the pump (6) is pumping water out of or into the aquifer (2), • measuring changes in the analyzed TEM signals, • generating analysis signals representative of said changes, and • converting the analysis signals into control signals designed for controlling the at least one pump (6).
E21B 43/12 - Methods or apparatus for controlling the flow of the obtained fluid to or in wells
E03B 3/08 - Obtaining and confining water by means of wells
G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
8.
A CONTROL SYSTEM FOR DISTRIBUTED PUMPING IN A THERMAL ENERGY DISTRIBUTION SYSTEM
The present disclosure is directed to a control system (15) for distributed pumping in a thermal energy distribution system (1), wherein the thermal energy distribution system (1) comprises at least two system branches (7) being arranged in parallel to each other, wherein - a pump assembly is installed in one of the system branches (7) comprising a thermal energy transfer element ( 13) and at least one temperature sensor (23) for providing a measured temperature value (T) that is affected by an output power (Φ) of the thermal energy transfer element (13), and the pump assembly is configured to control and provide a fluid flow (q) through said system branch (7), wherein the output power (Φ) of the thermal energy transfer element (13) scales non-linearly with the fluid flow (q) through said system branch, characterised in that the control system (15) is configured to provide a pump actuation signal (ω, τ, P) for operating the pump assembly in a closed-loop control with the measured temperature (T) as a feedback signal to control the fluid flow (q) through said system branch (7), wherein the control system (15) is further configured to apply a non-linear correction function in the closed-loop control such that the output power (Φ) of the thermal energy transfer element (13) scales linearly with the pump actuation signal (ω, τ, P).
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
F24D 19/10 - Arrangement or mounting of control or safety devices
F24F 11/85 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
A pump unit includes at least one impeller (4) and an electric motor connected to the at least one impeller (4). The electric motor includes a stator (12), a rotor (8) and a can (18) between the stator (12) and the rotor (8). The can (18), on its first axial end, is in engagement with a support structure (10). At least one axial damping part (32) is arranged between an axial surface (26) of the can (18) and the support structure (10), and at least one radial damping part (34) is arranged between an outer circumferential surface of the can (18) and the support structure (10).
Disclosed herein are embodiments of an apparatus for detecting a fault condition of a pump for pumping a fluid, the apparatus comprising: a sensor for measuring a physical property of the fluid, a housing accommodating the sensor and configured for being mounted with said sensor in operational connection with the liquid, a signal processing unit accommodated within the housing and configured to receive a sensor signal from the sensor and to process at least the received sensor signal to detect an occurrence of the fault condition, a communications interface accommodated within the housing and configured to communicate a fault signal indicative of the detected occurrence of the fault condition to a system external to the housing.
Sensing assembly for a hydraulic circuit, said sensing assembly comprising a sensor, a plug, a one-piece fitting, and fastening means arranged for detachably fastening the sensor to the one-piece fitting, said sensor comprising a sensing element, said plug comprising a cylindrical portion with an external thread, and said one-piece fitting comprising a cylindrical protrusion with an external thread, a first opening arranged to be in fluid communication with the sensing element of the sensor when the sensor is fastened to the one-piece fitting via the fastening means, a second opening comprising a hollow cylindrical portion with an internal thread suitable for engaging with the cylindrical portion of the plug, a third opening, and a fourth opening arranged passing through the cylindrical protrusion, said first, second, third and fourth openings being in fluid communication with each other, said second and third openings being arranged such that when the plug is inserted into the second opening, the plug can displace between two positions, a first position where the threaded plug prevents a fluid connection between the third opening and the fourth opening and a second position where a fluid connection is provided between the third and fourth openings. In this way a simple and flexible sensing assembly is provided.
G01D 11/30 - Supports specially adapted for an instrumentSupports specially adapted for a set of instruments
G01L 19/00 - Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
A method of manufacturing an object by joining a first component and a second component. The first component comprises metal powder with a first alloy composition and a first soluble binder, and the second component comprises metal powder with a second alloy composition and a second soluble binder. They may further comprise ceramic powder. At least one of the surfaces to be joined is dissolved before they are brought in contact, or a mixture of metal powder with a third alloy composition and a dissolved third binder is arranged there between. The chemical differences between the first, second, and third alloy compositions are within predetermined limits. The components are sintered or oxidized together whereby it is possible to obtain an object wherein the transitions between the material phases from the joined components are close to inconspicuous when analysed with scanning electron microscopy.
B22F 7/06 - Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting of composite workpieces or articles from parts, e.g. to form tipped tools
B22F 3/00 - Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sinteringApparatus specially adapted therefor
B22F 9/24 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
B22F 10/00 - Additive manufacturing of workpieces or articles from metallic powder
A pump device (1) comprises a centrifugal pump (2) and a mixing unit (4) in which two fluids are mixed. The mixing unit (4) comprises a flapper valve (10) configured to move between a first and a second position in which it closes a first inlet (7) and a second inlet (8) of the mixing unit, respectively. At least one of the inlets houses a movable piston (13) which is biased towards being in contact with the flapper valve. The piston has at least one piston channel (15) or annular space (23) through which the fluid flows in to the mixing unit in a controlled manner.
B01F 35/82 - Forming a predetermined ratio of the substances to be mixed by adding a material to be mixed to a mixture in response to a detected feature, e.g. density, radioactivity, consumed power or colour
B01F 35/83 - Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
F04D 7/04 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogeneous
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
F16K 15/03 - Check valves with guided rigid valve members with a hinged closure member
F24D 3/10 - Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks
G05D 11/13 - Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
15.
WATER RECIRCULATION LOOP FOR A HYDROGEN PRODUCING ELECTROLYSIS PLANT
The invention relates to a water recirculation loop (30) for a hydrogen producing electrolysis plant (30) that comprises an electrolysis stack (10). The water recirculation loop (30) comprises: at least one, preferably one, circulation pump (6); a water inlet section (9) connectable to the electrolysis stack (10), wherein the water inlet section (9) can be supplied with water by the pump (6); a water feed section (91) leading to the water inlet section (9);a water outlet section (11) connectable to the electrolysis stack (10), wherein the water at the outlet section (11) being pressurized within the electrolysis stack (10) and/or in the water feed section (91) leading to the water inlet section (9); at least one energy recovery device (8) for transferring water pressure and/or flow energy from the water outlet section (11) to said water feed section (91); and a recirculating section (31) connecting an output of the energy recovery device (8, 28) with an input port of the pump (6).
C25B 9/73 - Assemblies comprising two or more cells of the filter-press type
C25B 15/08 - Supplying or removing reactants or electrolytesRegeneration of electrolytes
F04D 1/00 - Radial-flow pumps, e.g. centrifugal pumpsHelico-centrifugal pumps
F04F 1/18 - Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped the fluid medium being mixed with, or generated from, the liquid to be pumped
F28D 9/00 - Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
09 - Scientific and electric apparatus and instruments
Goods & Services
Circulating pumps; centrifugal pumps; pumps for water supply; pumps for fresh and polluted water; pumps for industrial purposes; pumps for fuel oil; hydraulic pumps; air compressor pumps; regulation and control devices for use in connection with pumps and pumping plants, namely, valves, cocks, packings and automatic regulating valves; electric motors for pumps not for land vehicles; filters being parts of machines and motors; cleaning apparatus being parts of machines and motors and cleaning machines; structural and replacement parts and fittings for these goods, not included in other classes Apparatus and instruments for measuring and checking, and structural and replacement parts and fittings for these goods, not included in other classes; recorded software and hardware for use exclusively with pumps and pumping; structural and replacement parts and fittings for these goods, not included in other classes
09 - Scientific and electric apparatus and instruments
Goods & Services
Circulating pumps; centrifugal pumps; pumps for water supply; pumps for fresh and polluted water; pumps for industrial purposes; pumps for fuel oil; hydraulic pumps; air compressor pumps; regulation and control devices for use in connection with pumps and pumping plants, such as valves, cocks, packings and automatic regulating valves; electric motors for pumps (not for land vehicles); filters (being parts of machines and motors); cleaning apparatus (being parts of machines and motors) and cleaning machines; and parts and accessories (not included in other classes) for these goods.. Apparatus and instruments for measuring and checking (supervision), and parts and accessories (not included in other classes) for these goods; software and hardware for use exclusively with pumps and pumping; and parts and accessories (not included in other classes) for these goods..
18.
CIRCULATION PUMP, SYSTEM AND METHOD FOR DOMESTIC HOT-WATER RECIRCULATION
A circulation pump for supplying hot water to a hot water inlet of a temperature-controlled bypass valve for domestic hot-water recirculation, the circulation pump including a pump controller configured for controlling a pump motor such that the pump motor cycles between on-phases and off-phases, the circulation pump further including a sensor for measuring at least one operation parameter of the circulation pump; the pump controller being configured such that an on-phase is terminated and an off-phase is initiated when an output signal of the sensor indicates that said at least one operation parameter reaches a termination threshold value or range.
Described and claimed is a shaft sealing device for a pump housing. The shaft sealing device comprises seal housing, a shaft seal, and a pump fluid sensing device. The seal housing mounts the sealing device in an upper part of a pump housing. The shaft seal circumferentially contacts a drive shaft extending through the pump housing and prevents pump fluid from leaking out of the pump housing. The pump fluid sensing device comprises a temperature sensor mounted in a sensing space defined by the seal housing and at a position where it is only in contact with pump fluid if a level of pump fluid in the pump housing is sufficient to keep the shaft seal lubricated. Further, a pump housing comprising a shaft sealing device and a pump assembly comprising a pump housing with a shaft sealing device are described and claimed.
Described and claimed is a shaft sealing device for a pump housing. A seal housing mounts the sealing device in an upper part of a pump housing and comprises a venting duct connecting an inside of the pump housing and an environment thereof. A shaft seal circumferentially contacts a drive shaft extending along a rotational axis through the pump housing and prevents pump fluid from leaking out of the pump housing. A pump fluid sensing device determines whether a level of pump fluid in the pump housing is sufficient to keep the shaft seal lubricated. A venting device controls a flow of fluid through the venting duct and releases air from the pump housing in case the pump fluid sensing device determines that the level of pump fluid in the pump housing is not sufficient to keep the shaft seal lubricated.
Described and claimed is a shaft coupling for attaching a pump drive shaft of a pump assembly to a motor drive shaft of the pump assembly. The shaft coupling comprises a housing for mounting the shaft coupling in a pump housing of the pump assembly. The shaft coupling further comprises a cylindrical coupling sleeve for receiving a drive end of the pump drive shaft and an output end of the motor drive shaft. The coupling sleeve is configured for establishing a rotationally fixed connection between the motor drive shaft and the pump drive shaft. The shaft coupling further comprises a shaft seal circumferentially surrounding the coupling sleeve. The shaft seal prevents pump liquid from leaking out of the pump housing where the coupling sleeve extends through the housing. Further, a pump housing comprising a corresponding shaft coupling and a pump assembly comprising a corresponding pump housing are described and claimed.
F04D 29/044 - Arrangements for joining or assembling shafts
F04D 29/62 - MountingAssemblingDisassembling of radial or helico-centrifugal pumps
F16D 1/097 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic or segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping with clamping effected by ring expansion only, e.g. with an expanded ring located between hub and shaft
F16D 1/04 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with hub and longitudinal key
F16D 1/05 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces
The invention refers to a pumping and degassing system configured for use in a hydronic system and comprising a circulator pump (4) having a pump inlet being in communication with a first system connection (7) and a pump outlet being in communication with a second system connection (13), wherein the first system connection (7) and the second system connection (13) are configured for connection to a hydraulic circuit (5), and comprising a degassing device (8;8') having a degassing inlet (9;9')and a degassing outlet (11;11'), wherein the degassing outlet (11;11') is connected to the pump inlet.
The invention relates to a method (10) for monitoring and/or adapting an operation of a pump (40) of a domestic hot water system (20). The method (10) comprises the steps of: activating (11) the pump (40) to circulate water through the hot water system (20); measuring (12) a temperature increase of the water in the domestic hot water system (20) in discrete time or temperature steps after the activation of the pump (40); determining (13) at least one parameter, wherein the at least one parameter comprises: a time required for reaching a steady state temperature after the activation of the pump (40), and/or an estimated system temperature of the domestic hot water system (20) at the steady state. The method (10) comprises the further step of: forwarding (14) the at least one parameter via a communication interface (44) of the pump (40), and/or adapting a pump setting of the pump (40) based on the at least one parameter.
An integrated electric motor drive. The motor drive having rotatable parts with a drive shaft and a rotor, wherein the drive shaft extends along a rotor axis and the rotor is mechanically coupled to the drive shaft; and static parts having a stator and power electronics for controlling an electric current through the stator. The integrated electric motor drive has a liquid cooling system with a closed liquid cooling circuit and a liquid coolant agitator. The closed liquid cooling circuit is filled with liquid coolant being in thermal contact with the stator and/or the power electronics. The liquid coolant agitator is arranged and configured to circulate the liquid coolant along the closed liquid cooling circuit. The liquid coolant agitator is mounted within the closed liquid cooling circuit to be rotatable about the rotor axis, and the liquid coolant agitator is magnetically coupled to the movable parts.
A pump assembly includes an electric drive motor with a motor drive shaft and a rotor. The motor drive shaft extends along a rotor axis and the rotor is mechanically coupled to the motor drive shaft. A pump housing encloses an impeller that is mechanically coupled to a pump drive shaft. The pump drive shaft extends along the rotor axis. The motor drive shaft is releasably coupled to the pump drive shaft by a drive shaft coupling for transferring torque from the motor drive shaft to the pump drive shaft. The drive shaft coupling is arranged within the motor drive shaft for transferring torque from the motor drive shaft to the pump drive shaft by frictional connection. The drive shaft coupling is accessible by an elongate tool through the second axial hollow motor drive shaft drive end for selectively tightening and releasing the drive shaft coupling.
A computer implemented method for maintaining a digital representation of a physical system, the physical system comprising a set of one or more physical devices associated with an installation location, the set of one or more physical devices including a gateway device for communicatively coupling the set of one or more physical devices to a remote data processing system, the digital representation including system data indicative of the set of one or more physical devices; wherein the gateway device comprises a gateway identifier obtainable from said gateway device by a maintenance operator and/or by a user device of said maintenance operator, when the maintenance operator and/or the user device is in a proximity of the gateway device, the gateway identifier identifying the gateway device; wherein the method comprises: selectively allowing one or more authorized users access to the system data and to alter the system data, wherein said maintenance operator is different from the one or more authorized users; receiving, from the user device of the maintenance operator, an access request for limited access, the access request being indicative of a target gateway identifier; granting the maintenance operator selective access limited to predetermined data processing functionality associated with system data of a target set of one more physical devices, the target set including a target gateway device identified by said target gateway identifier, wherein the predetermined functionality prevents the maintenance operator from altering the system data.
A method for determining an efficiency of a cooling system including a plurality of electrically powered cooling devices, the cooling system is configured to ramp the total cooling capacity up and down by turning the one or more cooling devices on and off either fully or partly. The method involves providing corresponding values of estimated electrical power consumption and total rated cooling capacity and monitoring and recording the total electrical power consumed by the system.
Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the apparatus comprising a vibration sensor operable to output a vibration sensor signal indicative of sensed vibrations of one or more components of the fluid system, and a processing unit configured to: obtain a vibration velocity signal from the vibration sensor signal, the vibration velocity signal being indicative of a vibration velocity of the one or more components of the fluid system; detect one or more peaks in the vibration velocity signal; and classify one or more of the detected peaks as a hydraulic shock event.
The invention relates to a water treatment loop (20) for connection to at least one electrolysis stack (8) of a hydrogen producing electrolysis plant (40), comprising: a water inlet section (21) into which water drained from at least one electrolysis stack (8) can be recirculated; an ion exchanger (2) arranged downstream of the water inlet section (21); a water outlet section (22) arranged downstream of the ion exchanger (2) and adapted to supply water treated by the ion exchanger (2) to said at least one electrolysis stack (8); and a catalytic surface (23) arranged downstream of the water inlet section (21) and upstream of the ion exchanger (2), so that water recirculated via the water inlet section (21) is made to contact the catalytic surface (23) prior to interaction with the ion exchanger (2), whereby oxidants such as peroxides are at least partly removed from the water, prior to being treated by the ion exchanger (2).
The invention is a device (1) for controlling operational vibrations of a pump (2) or pump assembly arranged thereon. In some embodiments, it comprises a mounting plate (3) configured to have the pump or pump assembly arranged on a surface thereof. The device comprises at least one actuator (6) configured to switch between a first state in which it provides a connection between the pump or pump assembly and an associated carrying surface or between the mounting plate and the carrying surface, and a second state in which there is no such connection via the at least one actuator. Activation of the at least one actuator to switch between the first and the second states is controllable so that resonance characteristics of the pump or pump assembly during operation can be changed by the activation.
Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the fluid system comprising a pump assembly, the pump assembly comprising a pump, in particular a centrifugal pump, and a pump motor, the apparatus comprising means for monitoring a pump speed of the pump and/or for monitoring a motor frequency; and a processing unit configured to detect a variation in the monitored pump speed and/or motor frequency; and detect a hydraulic shock event from the detected variation in the monitored pump speed and/or motor frequency.
The invention relates to a pump (20) having a bearing assembly (10). The bearing assembly (1) comprises a core ring structure (11); and an outer ring structure (12) which at least partially surrounds the core ring structure (11) on all sides; wherein the core ring structure (11) has a higher mechanical stiffness than the outer ring structure (12).
The present disclosure is directed to a method for controlling a circulation pump (7) being installed in a system (1 ) for heating or cooling, wherein the system (1 ) is equipped with one or more temperature controlled valves (9), wherein the method comprises: operating the pump at an operating point, wherein the current operating point is defined as the intersection point of an adaptable pump characteristic curve and a variable system characteristic curve (33a-c), wherein the system characteristic curve (33a-c) varies with a common degree of openness (OD) of the one or more temperature-controlled valves (9), wherein the pump characteristic curve is adapted by setting the speed of the pump (7), wherein the speed of the pump (7) is controlled in such a way that the operating point follows an adjustable control curve; and automatically adjusting the control curve when the system characteristic curve (33a-c) changes in order to keep the common degree of openness (OD) of the one or more temperature-controlled valves (9) in a desired range between a minimum common degree of openness (ODmin) and a maximum common degree of openness (ODmax), characterised in that automatically adjusting the control curve comprises determining a system variable (/cv) being susceptible to system characteristic curve changes, and using the system variable (/cv) as an input to provide a feed forward signal (27) to automatically adjust the control curve in a feed forward control (29).
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
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
F04C 14/08 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the rotational speed
F04C 14/10 - Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
Described and claimed is a mixer/diverter valve comprising a valve chamber extending along a chamber axis and four valve ports. The first and second valve port extend in opposing directions and perpendicular away from the valve chamber. The third valve port extends along an intermediate axis which is parallel to the port selection plane. The fourth valve port extends along the chamber axis. One of the third and the fourth valve port forms a pump connection for attaching the valve directly to a centrifugal pump and the other of the third and fourth valve port forms an auxiliary connector. The intermediate axis is arranged between the fourth valve port and the port selection plane. Furthermore, a hydraulics block and a set comprising a pump unit and a valve unit are described and claimed.
The present disclosure is directed to a pump assembly (1) comprising: - a pump housing (3) with a pump housing inlet (7) and a pump housing outlet (9), wherein the pump housing (3) defines an impeller chamber (11) enclosing an impeller (13) for pumping a liquid from the pump housing inlet (7) towards the pump housing outlet (9); - an integrated electric motor drive (5) being mechanically coupled to the impeller (13) via a drive shaft (23, 35), wherein the integrated electric motor drive (5) comprises a stator (43) and a rotor (41), wherein the drive shaft (23, 35) extends along a rotor axis (R) and the rotor (41) is mechanically coupled to the drive shaft (23, 35), wherein the integrated electric motor drive (5) comprises power electronics (45) for controlling an electric current through the stator (43); and - a liquid cooling system for cooling the stator (43) and/or the power electronics (45), wherein the liquid cooling system comprises a closed liquid cooling circuit (57), wherein the closed liquid cooling circuit (57) is filled with a liquid coolant being in direct or indirect thermal contact with the stator (43) and/or the power electronics (45), characterised in that the closed liquid cooling circuit (57) comprises a liquid-to-liquid heat exchanger section, wherein the liquid coolant is guided by the liquid-to-liquid heat exchanger section along a defined coolant flow path in thermal contact with a cold liquid flow for dissipating heat from the liquid coolant to the cold liquid flow.
The invention refers to a pump device comprising at least a first housing part (4) and a second housing part (6) with a sealing means arranged between the first (4)and the second housing part (6), wherein the sealing means comprises a sealing ring (8) having a rigid support element ( 10) and an elastic sealing layer ( 12) covering the support element (10) on at least one surface section, which at least one surface section is in contact with the first (4) and the second housing part (6).
F16J 15/02 - Sealings between relatively-stationary surfaces
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
37.
PERFORMANCE DERATING CONTROL IN A CIRCULATING PUMP
The invention relates to a method of controlling a power limit (P) of a circulating pump (1) comprising a critical component (4) and a first temperature sensor (5) arranged and configured to measure the temperature of the critical component. The first temperature sensor may be arranged on top of, below, integrated with, or in the vicinity of the critical component. The method comprises monitoring the temperature (T) of the critical component by use of the first temperature sensor and using an output signal (6) from the first temperature sensor as a first temperature input signal (7) to a controller (8). By use of the controller and based on the first temperature input signal, the power limit of the circulating pump is controlled in accordance with a performance derating curve for the circulating pump. The invention further relates to a system (3) for controlling a power limit of a circulating pump by use of such a method.
The present disclosure is directed to a submersible electronics module ( 17) enclosing electronics (18, 47, 49), wherein the submersible electronics module (17) has a first end section (23) and a second end section (25), wherein the first end section (23) of the submersible electronics module (17) comprises a first coupling section being releasably couplable to a submersible pump module (13), wherein the second end section (25) of the submersible electronics module (17) comprises a second coupling section being releasably couplable to a submersible motor module ( 15), wherein the submersible electronics module (17) comprises an interme- diary drive shaft section (45), wherein the intermediary drive shaft section (45) is releasably couplable to a motor drive shaft section (43) of the submersible motor module (15) for receiving a torque from the motor drive shaft section (43), and wherein the intermediary drive shaft section (45) is releasably couplable to a pump drive shaft section (35) of the submersible pump module ( 13) for transferring the torque to the pump drive shaft section (35).
Pumps and their parts, including pumps and pump parts for the supply of water for industry, for the circulation of fuel oil, for hydraulic technology and for air compressors, as well as for groundwater pumps and pumps for waters of great depths; pumps for use in heating installations, for water supply and in the production of steam; electric motors and internal combustion engines for the control of pumps; motor pumps; pump accessories, namely, valves (parts of machines) for pumps, regulating, safety, and stopping devices, regulators; valves (parts of machines) responsive to changes in physical conditions for the modification of pressure; machines and machine tools for the aforesaid machines; motors and engines (except for land vehicles), machine couplings, transmission belts; agricultural machinery and utensils of high technology, foundry machine parts; valves (parts of machines), filters (parts of machines and engines) with gas and fuel, oil and dust; machines and auxiliary machines, apparatus and devices for the cleaning of pipes; hydraulic and pneumatic apparatus for use in automatic control devices and devices; hydraulic self-regulating pumps; electromagnetically controlled valves
(1) Pompes et leurs parties, y compris pompes et parties de pompes pour l'alimentation d'eau pour l'industrie, pour la circulation de fuel-oil, pour la technique hydraulique et pour compresseurs d'air, ainsi que pompes à eaux souterraines et à eaux des grandes profondeurs; pompes pour l'usage dans les installations de chauffage, pour l'alimentation d'eau et dans la production de vapeur; moteurs électriques et moteurs à combustion interne pour la commande de pompes; pompes à moteur; accessoires de pompes, à savoir soupapes (parties de machines) de pompes, de réglage, de sûreté, de retenue et d'arrêt, détendeurs; soupapes (parties de machines) réagissantes aux changements des conditions physiques pour la modification de pression; machines-outils et outils pour ces machines; moteurs (autres que pour véhicules terrestres), accouplements de machines, courroies de transmission; appareils et ustensiles agricoles de grande technique, parties de machines pour la fonderie; soupapes (parties de machines), filtres (parties de machines et de moteurs) à gaz et à combustible, à huile et à poussière; machines, machines auxiliaires et appareils et ustensiles pour le nettoyage de conduites; appareils hydrauliques et pneumatiques pour usage dans dispositifs et appareils automatiques de contrôle; pompes hydrauliques à réglage automatique; soupapes commandées électromagnétiquement.
A computer-implemented method for determining a forward flow rate of fluid flow through a pump, the pump comprising an impeller and a pump motor, the forward flow rate being responsive to the impeller being driven by the pump motor to rotate in a forward direction and at a forward speed, the method comprising: obtaining an observed reverse power of the pump motor when the pump motor is operated to drive the impeller in a reverse direction, opposite the forward direction, and at a reverse speed; computing an estimate of the forward flow rate from at least the observed reverse power.
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
G01F 1/06 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission
Described and claimed is an ingress protection element for an open end of a stator chamber of a wet-running electric motor. The stator chamber is formed between a stator housing and a rotor can of the wet-running electric motor. The ingress protection element extends in an arc shape about a center axis between an inner edge and an outer edge. The outer edge is formed on an axial ingress protection section of the ingress protection element extending parallel to the center axis. The axial ingress protection section sectionally prevents direct access to the stator of the wet-running electric motor through a drainage opening of the wet-running electric motor. The ingress protection element abuts circumferentially against at least one of the rotor can, a stator support and the stator housing of the electric motor so that the ingress protection element is centered about a rotor axis of the electric motor and the center axis coincides with the rotor axis.
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
H02K 5/128 - Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
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
43.
A METHOD FOR AUTOMATICALLY DETERMINING AN OPERATING PROFILE OF AN INSTALLED PUMP SYSTEM
Disclosed and claimed is a method for automatically determining an op- erating profile of an installed pump system. The installed pump system continuously records value pairs indicative of an operating load of the pump system over an operating period. A first value is indicative of a pump flow and a second value is indicative of a pump head. The oper- ating profile of the installed pump system is determined from the recorded value pairs by establishing a time the installed pump system operates at or in the vicinity of each of a plurality of operating points over the operating period. Each operating point of the plurality of oper- ating points is defined by a pump flow and a pump head provided by the installed pump system. Further, a pump system configured to imple- ment the method is described and claimed.
Described and claimed is an integrated water circuit for a heat pump. The integrated water circuit comprises an electric backup heater with a composite housing defining a cavity for heating water using electric heating elements arranged in the cavity, a condenser connector, a first direct water connector and a first pump support. All connectors are formed integrally with the composite housing. The condenser connector is configured for connecting the electric backup heater to a return flow of a condenser of a heat pump. A first water pump is mounted via a distributor/collector unit to the first pump support so that an inlet of the first water pump is in fluid connection with the first distributor/collector unit. The first direct water connector is provided for supplying water from the cavity to an external water circuit.
The invention relates inter alia to a method of degassing gas, preferably air, from a liquid, preferably water. The method utilizes a degassing system comprising a tank having a volume being in fluid communication with a gas venting device configured for outletting gas from the volume, and a pump configured to provide a reduced pressure in the tank relatively to a system pressure in an associated liquid based heat transfer system containing the liquid to be degassed. Preferred embodiments comprises calculation of a duration of a treatment step.
A pump unit has an electrical drive motor and a control device for controlling the drive motor, wherein said control device includes at least one microprocessor and storage means which is able to store at least one control program executable by said microprocessor, wherein said control device includes or communicates with a programming module by which at least one user application can be created and/or modified and stored in said storage means, wherein said programming module is designed such that at least one input parameter, at least one operator and at least one action can be chosen as program elements and combined to generate at least one user function of said user application which can be executed by said microprocessor.
The centrifugal pump includes a flow measuring device (3) adapted to measure a delivery flow through the pump by means of a turbine wheel (32) including at least one permanent magnet (42). The flow measuring device includes at least one magnetic flux sensor (50, 51) arranged in a sensor housing (48) mounted in an outer wall of the pump casing (2). A rotatable disc (52) is fixed on a pump shaft and includes at least one permanent magnet (53). The flow measuring device is adapted to measure the delivery flow on the basis of a first measurement signal generated by the at least one magnetic flux sensor as a result of the rotation of the turbine wheel and to include in the measurement of the delivery flow a second measurement signal generated by the at least one magnetic flux sensor as a result of the rotation of the rotatable disc.
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
G01F 1/075 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
Described and claimed is a volute module for a single-stage centrifugal pump and a multi-stage centrifugal pump. The volute module comprises a body defining a volute surrounding an impeller chamber. The volute module further comprises an unencapsulated impeller in the impeller chamber. The volute module can be used as part of a multi-stage centrifugal pump by placing additional impeller housings in the impeller chamber. The last stage of the volute module is, however, always formed by the unencapsulated impeller whose flow is directed towards the volute and the same body can be used for single-stage and multi-stage centrifugal pumps. Further described and claimed are a single-stage centrifugal pump and a multi-stage centrifugal pump comprising the volute module.
A method for detecting leakage in a fluid system, comprising: receiving a pressure signal indicative of measured pressure values of a pressure in the fluid system measured at different points in time; determining a first filtered pressure signal indicative of variations of the measured pressure values over a first time scale; determining a second filtered pressure signal indicative of variations of the measured pressure values over a second time scale, shorter than the first time scale; outputting a leakage warning based on a comparison of the first filtered pressure signal and the second filtered pressure signal.
G01M 3/26 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
51.
PUMP DEVICE WITH INTEGRATED SAFE TORQUE OFF FUNCTION
A pump device comprising a rotational pump mechanism (P) arranged for pumping a fluid between a fluid inlet and a fluid outlet, and with an electric motor (MT) arranged to rotate a shaft connected to rotate the rotational pump mechanism (P). A motor drive (MD) is connected to the electric motor MT for driving the electric motor (MT) according to a variable frequency drive scheme. A safety circuit (STO) is connected to the motor drive (MD) and with first and second electric inputs (I1, I2) for connection to external electric switches (SW1, SW2). The safety circuit (STO) can enter a Safe Torque Off state causing the motor MT to stop generating torque, and safety circuit (STO) is designed with a redundancy to enter the Safe Torque Off state also in case of a fault, preferably complying with EN ISO 13849-1:2015, category 3. A housing (H) forms an enclosure in which the motor drive (MD) and the safety circuit (STO) are positioned. The housing (H) is attached to the electric motor MT, e.g. to a conductive motor casing of the electric motor (MT). The housing (H) may encircle partly of fully the electric motor (MT) and pump mechanism (P). The pump device provides a compact pump device with integrated safe function which allows for easy installation in applications with safety requirements, and further the pump device allows quick restart after safe mode.
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
H02P 29/20 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for controlling one motor used for different sequential operations
H02P 3/00 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
F04B 17/00 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors
52.
COMPACT SAFE TORQUE OFF CIRCUIT FOR ELECTRIC MOTOR
An electric Safe Torque Off circuit (STO) arranged for connection to a motor drive (MD) of an electric motor (MT), wherein the Safe Torque Off circuit (STO) is arranged to cause the electric motor (MT) to stop generating torque in case at least one out of at least two conditions is detected. The circuit (STO) is based on connection of first and second electric inputs (I1, I2) arranged for connection to respective first and second external electric switches (SW1, SW2). A pulse generator (PG) connects to the second electric input (I2) and generates an oscillating electric output voltage when powered from the second electric input (2). A modulator (MOD) generates an electric output signal being a modulated version of an electric voltage at the first input (I1) at a rate defined by the pulse generator (PG) controlled by the second input (I2). The output from the modulator (MOD) is applied to an optocoupler (OPT) which generates an electrically isolated output which is applied to two logic comparator blocks (B1, B2). These blocks (B1, B2) serve to drive respective high and low gate driver parts of the motor drive (MD) only in case both of the first and second pulse detection output indicate that a pulse signal is detected by both of the first and second pulse detectors (PD1, PD2). This provides a compact safety function, e.g. for integration into the housing of an electric motor along with its motor drive. Still, the circuit (STO) is compliant with EN ISO 13849-1:2015, PL e category 3 and IEC 61800-5-2:2016 SIL 3.
H02P 3/00 - Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
H02P 29/20 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors for controlling one motor used for different sequential operations
53.
METHOD FOR EVALUATING THE PROPER INSTALLATION OF A METERING PUMP AND METERING PUMP
nn+1n+1n+i+i) and repeating steps b) to f) until at least one predefined final evaluation step (F) in the decision matrix (36) is reached. Furthermore, the invention refers to a metering pump device configured to carry out this method.
F04B 49/12 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by varying the length of stroke of the working members
F04B 51/00 - Testing machines, pumps, or pumping installations
Preferred embodiments of the invention relate to a method of controlling a flow of fluid in a mixing loop of a system of mixing loops comprising a number of mixing loops each comprising a thermal load and each being fluidicly connected in parallel to a fluid source, in each mixing loop pressurization of said fluid is provided at least partly by a pump being a variable speed pump, and a bypass of said flow of fluid is recirculated in the mixing loop by a 3-way valve comprising a first inlet port fluidicly connected to said fluid source to receive a supply of fluid, a second inlet port fluidicly connected to receive said bypass and an outlet port fluidicly connected to an inlet side of said pump. Preferred embodiments of the invention also relates to a system of mixing loops.
Method of controlling a pump to control a fluid pressure in a fluid system comprising a distribution source, a supply grid and a return grid for respective recipients and the pump wherein the method comprises: receiving a local differential pressure between the supply grid and the return grid at a first location; receiving a remote differential pressure between the supply grid and a the return grid at a second location further displaced along the supply line downstream from the pump than the second location; controlling operation of the pump based on the received data and on a local pressure set point; responding to a detected failure to receive the primary remote sensor data at least by modifying, in particular increasing, the local pressure set point and by controlling operation of the pump based on at least the received local sensor data and the modified local pressure set point.
The invention relates to a method of determining a functional condition of an expansion vessel (1) in a heating- or cooling system (5). The system comprises an expansion vessel arranged and configured to equalize pressure in liquid (4) in the system when the expansion vessel is intact, and at least one pressure sensor (P1,P2) configured to measure a pressure in the liquid. At least one temporary pressure increase is generated in the circulating liquid. By use of the at least one pressure sensor, a pressure response representing the resulting pressure in the liquid as a function of time is determined. The determined pressure response is compared with known data representing a corresponding pressure response of the system when the expansion vessel is intact. Based on the comparison, the functional condition of the expansion vessel is determined. The invention further relates to a device (15) for carrying out such a method.
F24D 3/10 - Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks
F24D 19/10 - Arrangement or mounting of control or safety devices
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
57.
CONTROLLING A BOOSTER PUMP IN A DISTRIBUTED-PUMP HYDRONIC HEATING OR COOLING SYSTEM
A hydronic system for heating and/or cooling a target structure, the system comprising: at least one supply line, at least one return line, a plurality of branch lines, each branch line fluidly connecting a terminal unit with the supply line or with the return line, a plurality of branch pumps, each configured to pump fluid through a respective one of the plurality of branch lines, at least one booster pump configured to pump fluid through the supply line or the return line, the at least one booster pump being arranged in series with one or more of the plurality of branch pumps, the at least one booster pump being operable at a controllable booster pump speed, wherein the booster pump speed is controllable to be larger than a minimum booster pump speed, wherein the at least one booster pump comprises a booster pump controller configured to: receive one or more pressure sensor signals indicative of a differential pressure between the supply line and the return line, determine a booster pump control error indicative of a difference between a reference pressure and the differential pressure, stop pump operation of the booster pump responsive to the booster pump operating at the minimum booster pump speed and the differential pressure exceeding the reference pressure.
A pump unit (2) includes a first housing with at least a first electrical plug connector (12) on the outside of the first housing and a separate connector housing (16) connected to the first housing and including at least a first mating plug connector. The mating plug connector is engaged with the first electrical plug connector (12). An electrical connection terminal (42) is provided in the interior of the separate connector housing (16), which electrical connection terminal (42) is connected to the first mating plug connector and is configured for connection to one electrical cable or a plurality of electrical cables.
The invention refers to a control method for a hydronic system, the hydronic system comprising at least one thermal source (2) and a hydraulic supply unit (8) connected to the outlet of the thermal source (2) and controlling a supply of a heat transfer medium to at least one load circuit (4, 6), wherein the hydraulic supply unit (8) causes the heat source (2) to adapt the outlet temperature of the heat source (2), if at least one predefined criterion in the hydraulic supply unit (8) is fulfilled, and to a hydraulic supply unit and a hydronic system configured for use of such method.
The invention relates in a first aspect to method of venting air out of a closed fluid system comprising a number of inter connected pipes configured for flow of a fluid, a variable speed pump configured for controlling the volume flow of fluid in said fluid system and an air venting device configured to let air out from the fluid system, the method comprising operating said pump in at least three phases.
One aspect of the present disclosure relates to a pump for a zoned heating or cooling system, the pump being configured to be started and stopped based on a sensed zone temperature of a zone of the zoned heating or cooling system, wherein the pump comprises a pump controller configured to: responsive to receiving a start trigger, control the pump to start pump operation in a first operational mode; in the absence of a stop trigger during at least a first time interval after receipt of the start trigger, to automatically control the pump to change pump operation after the first time interval to a second operational mode, different from the first operational mode; and responsive to receiving a stop trigger, to control the pump to stop pump operation.
A computer-implemented method for determining one or more application-specific control parameters of a pump operating in a system for moving a fluid. The method includes monitoring one or more operational variables of the pump during operation of the pump in the system; applying a trained machine-learning model to automatically determine an application type from the monitored operational variables, the application type representing a type of system the pump operates in and/or representing a type of operation performed by the pump when operating in said system, each application type being associated with a respective set of one or more application-specific control parameters; controlling the pump based on the set of one or more application-specific control parameters associated with the determined application type.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
A control method uses in a membrane filter system operated in iterative filtration cycles, the cycles including a production period and a following flushing. A setting of a crossflow on the entrance side (4) of a membrane (2) in the production period is controlled such that the energy consumption (E) per filtration cycle reaches an optimum. A corresponding membrane filter system is provided.
A pump monitoring system associates a current operating state of a pump system including n≥1 pumps with one or more of k≥1 fault scenarios. The pump monitoring system includes an interface module for receiving at least one set of m≥2 operational values from the pump system. The m operational values define a current operational point in an m-dimensional operating space. A processing module processes operational values received by the interface module and consults given or determined model parameters describing a non-faulty model pump characteristic in the m-dimensional operating space and determines a k-dimensional decision vector with k decision vector components indicative of a deviation between an actual differential volume in the m-dimensional operating space based on distances between the m operational values and the non-faulty model pump characteristic, and a modeled differential volume in the m-dimensional operating space for the respective fault scenario.
Disclosed herein are embodiments of a method for determining operational information of a metering pump, the metering pump comprising a dosing chamber, a displacement member and a drive motor for driving the displacement member, wherein the method comprises: receiving a plurality of detected values of an indicator quantity indicative of a strength of activation of the displacement member at respective positions of the displacement member during operation of the metering pump; computing the operational information from a machine-learning model trained to output said operational information responsive to receiving a plurality of input values derived from detected values of the indicator quantity.
The present invention relates to a method for optimizing the energy consumption of a heat transport system. Preferred embodiments of the method comprising the recurrent steps of recording a power change in a summed power consumption resulting from said change in an optimization parameter introduced into the heat transport system; determining a new to be introduced change to the optimization parameter and introducing the new to be introduced change into the heat transport system.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
F24F 11/46 - Improving electric energy efficiency or saving
09 - Scientific and electric apparatus and instruments
Goods & Services
Regulators as machine parts; pressure regulators [parts of
machines]; pressure regulators. Temperature matrix regulators; software for monitoring
fluids and flow in circulating pumps.
72.
METHOD AND SYSTEM FOR DETERMINING AN OPERATIONAL PARAMETER OF A DISTRICT ENERGY GRID IN A DISTRICT ENERGY SYSTEM
A computer-implemented method for determining one or more operational parameters of a district energy grid, the district energy grid comprising one or more supply lines and a plurality of service lines for transporting a fluid to a plurality of consumers, each supply line feeding the fluid into a plurality of service lines and each service line connecting a consumer with one of the one or more supply lines, the method comprising: obtaining measured sensor data from one or more sensors associated with one or more selected service lines of the plurality of service lines, the selected service lines being connected to at least one selected supply line of the plurality of supply lines, the received sensor data being indicative of fluid temperatures and observed fluid flows of the transported fluid received at the respective consumers at respective points in time via respective ones of said one or more selected service lines; obtaining heat loss models of heat loss in the respective selected service lines, the heat loss models relating the observed fluid temperatures and the observed fluid flows to a supply line temperature of the fluid flowing from said at least one supply line into the respective selected service lines, computing, from said heat loss models and from the received sensor data, an estimate of the one or more operational parameters, in particular of the supply line temperature in said at least one selected supply line.
G01K 17/06 - Measuring quantity of heat conveyed by flowing media, e.g. in heating systems
G01M 3/00 - Investigating fluid tightness of structures
G01K 7/42 - Circuits effecting compensation of thermal inertiaCircuits for predicting the stationary value of a temperature
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
G01K 17/20 - Measuring quantity of heat conveyed by flowing media, e.g. in heating systems based upon measurement of temperature difference across a radiating surface, combined with ascertainment of the heat-transmission coefficient
73.
METHOD AND SYSTEM FOR DETERMINING HEAT LOSS IN A SERVICE LINE OF A DISTRICT ENERGY SYSTEM
A computer-implemented method for determining thermal loss in a district energy grid, the district energy grid comprising one or more supply lines and a plurality of service lines for transporting a fluid to a plurality of consumers, each supply line feeding the fluid into a plurality of service lines and each service line connecting an consumer with one of the one or more supply lines, the method comprising: receiving measured sensor data from one or more sensors associated with one or more selected service lines of the plurality of service lines; determining, from the received sensor data, respective observed fluid temperatures and observed fluid flows of the transported fluid received at respective points in time via respective ones of said one or more selected service lines; obtaining a set of equations, the set of equations comprising a plurality of equations relating the observed fluid temperatures and the observed fluid flows with thermal loss parameters indicative of thermal losses of respective ones of said selected one or more service lines, computing a solution of the set of equations and computing a result value of at least a first thermal loss parameter indicative of a thermal loss of a first service line of said selected one or more service lines from the computed solution of the set of equations.
Preferred embodiments of the invention relate to a method for determining a condition of a fluid component. Such a method preferably comprises defining a regularity to occur in said exterior of said fluid component during an exchange of fluid between said component and said fluid carrying system; recording during a measuring phase an image sequence of an exterior of said fluid component during which recording the fluid component is fluidic connected to said fluid carrying system, and determining from said recorded image sequence an image feature, if present, expressing said regularity, and if present in the recorded image sequence assigning the condition of the fluid component to be in conformity with said regularity.
A cleaning‐in‐place method for cleaning a membrane filter module, the membrane filter module including a membrane having a feed side and a permeate side and being configured to filter a fluid passing through the membrane from the feed side to the permeate side; wherein the method comprises performing a sequence of process cycles, the sequence comprising at least one monitored process cycle, the monitored process cycle comprising: providing a flow of a liquid through the membrane and/or across the feed side of the membrane; monitoring at least one hydraulic parameter associated with the provided flow of the liquid; and terminating the flow of the liquid, when the at least one monitored hydraulic parameter meets a predetermined cycle completion criterion.
The present invention relates to method and system for degassing liquid. The degassing system preferably comprises a centrifugal pump, a tank, a throttling device arranged at an upper end of the tank to receive liquid to be degassed through said throttling device and an outlet arranged at a lower end of said tank fluidicly connected to a suction side of the centrifugal pump a liquid outlet connection fluidicly connected to the discharge side of the centrifugal pump to discharge liquid being at least partially degassed and a gas outlet fluidicly connected to the tank to discharge gas accumulated in the tank during degassing of liquid. In a preferred embodiment, the method comprises selecting a treatment pressure to be obtained in the tank upstream of the centrifugal pump and setting the rotational speed of the centrifugal pump to provide said selected treatment pressure to be obtained.
The invention relates to a liquid degassing system with a liquid inlet connection, with a liquid outlet connection, with a centrifugal pump, with an electric motor driving the centrifugal pump, with a tank and with an electrical/electronic control.
A pump motor (1) includes a rotor (2) mounted to a drive shaft (3) extending along a rotor axis (L). The rotor (2) is circumferentially embraced by a stator. A stator housing (5), encloses the stator. The stator housing includes a first axial end and a second axial end. Electronics for powering and controlling the motor operation include a first portion, arranged on a first PCB, and a second portion, arranged on a second PCB (51). A first electronics housing (11) accommodates the first PCB. The first electronics housing (11) is arranged at a perimeter of the stator housing (5). A second electronics housing (47) accommodates the second PCB (51). The second electronics housing (47) is arranged at the second axial end of the stator housing (5). The second electronics housing (47) at least partially rings the drive shaft (3).
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
H02K 11/40 - Structural association with grounding devices
79.
METHOD AND SYSTEM FOR LEAKAGE DETECTION IN A FLUID SYSTEM
A method for detecting leakage in a fluid system. Some embodiments of the method comprise: receiving a plurality of measured pressure values of a fluid pressure in the fluid system measured at different points in time; computing, from the received pressure values, a first pressure gradient at a first point in time; computing, from the received pressure values, a second pressure gradient at a second point in time, later than the first point in time, wherein the fluid pressure in the fluid system at the first point in time is higher than the fluid pressure in the fluid system at the second point in time; detecting presence of a leakage responsive to the magnitude of the second pressure gradient being smaller than the magnitude of the first pressure gradient.
G01M 3/28 - Investigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables, or tubesInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipe joints or sealsInvestigating fluid tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for valves
09 - Scientific and electric apparatus and instruments
Goods & Services
Regulators as machine parts; Pressure regulators being parts of machines; Pressure regulators, namely, parts of machines Temperature matrix regulators, namely thermostats; downloadable and recorded Software for monitoring fluids and flow in circulating pumps
The invention refers to a control device (12) configured for control of a pump unit (10) or a hydronic system, the control device (12) comprising an electric interface (26) configured for connecting at least one sensor (T1, T2, T3) and at least one electric load (16, 24) with the control device (12), wherein the electric interface (26) is a three-pin connector, and the control device (12) includes a switching device (34) configured to selectively apply electric signals (V1, V2, V3) onto the three pins (28, 30, 32) of the connector allowing to selectively receive sensor signals from the at least one connected sensor (T1, T2, T3) or to supply a voltage (V2) to the at least one electric load (16, 24), and a pump unit and a hydronic system having such a control device.
The invention to a method for controlling a hydronic system having a thermal source (2) and at least a first (4) and a second (6) load circuit connected to the thermal source via a hydraulic system (8) having a changeover valve (16), said changeover valve (16) being configured to selectively activate a flow of heat transfer medium through the first (4) or the second (6) load circuit, wherein for distributing the required thermal energy to the load circuits (4, 6) in at least one operational condition a duty cycle for the first load (4) circuit is extended, resulting in a shortening of the duty cycle of the second load circuit (6), and for compensating this shortening of the duty cycle the temperature and/or flow of the heat transfer medium supplied to the second load circuit (6) are adjusted, as well as a hydraulic unit for a hydronic system.
A pump device (1) comprises a centrifugal pump (2) and a mixing unit (4) in which two fluids are mixed. The mixing unit (4) comprises a flapper valve (10) configured to move between a first and a second position in which it closes a first inlet (7) and a second inlet (8) of the mixing unit, respectively. At least one of the inlets houses a movable piston (13) which is biased towards being in contact with the flapper valve. The piston has at least one piston channel (15) or annular space (23) through which the fluid flows in to the mixing unit in a controlled manner.
A method for controlling operation of a fluid transport system by applying a self-learning control process. The method includes: receiving obtained values of input signals during operation of the system during a first period of time, which is controlled by a predetermined control process, automatically selecting a subset of the input signals based on the received obtained values of the input signals, receiving obtained values of at least the selected subset of input signals during a second period of time, which is controlled by applying the self-learning control process, which is configured to control operation based only on the selected subset of input signals, and wherein applying the self-learning control process includes updating the self-learning control process based on the received obtained values of the selected subset of the input signals and based on at least an approximation of a performance indicator function.
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
86.
SENSOR DEVICE AND PUMP OR PUMP SYSTEM WITH SUCH A SENSOR DEVICE
The invention relates to a sensor device (7) for measuring at least one property of a liquid in a pump (1). The sensor device comprises at least one sensor (8), a wireless communication device (9) configured to communicate a wireless signal, and an electric circuit unit (10) having the at least one sensor electrically connected thereto at a first end and the wireless communication device electrically connected thereto at a second end. The electric circuit unit is mounted in liquid-tight engagement with a first opening (11) in a rotor can (3) of the pump (1). The sensor device is configured so that during use the at least one sensor measures the at least one property of the liquid. An output signal from the at least one sensor is transferred to the wireless communication device via the electric circuit unit, and the wireless communication device communicates the wireless signal representative of the output signal to a receiver (12) at a distance therefrom. The invention further relates to a pump (1) comprising such a sensor device.
F04D 15/02 - Stopping of pumps, or operating valves, on occurrence of unwanted conditions
F04D 29/42 - CasingsConnections for working fluid for radial or helico-centrifugal pumps
G01F 1/34 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
G01K 13/02 - Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
87.
INTEGRATED ELECTRIC MOTOR DRIVE AND DRY RUNNER CENTRIFUGAL PUMP ASSEMBLY WITH SUCH AN INTEGRATED ELECTRIC MOTOR DRIVE
The present disclosure is directed to an integrated electric motor drive (5) comprising: - rotatable parts comprising at least a drive shaft (23, 35) and a rotor (41), wherein the drive shaft (23, 35) extends along a rotor axis (R) and the rotor (41) is mechanically coupled to the drive shaft (23, 35); and - static parts comprising at least a stator (43) and power electronics (45) for controlling an electric current through the stator (43), characterised in that the integrated electric motor drive (5) further comprises a liquid cooling system comprising a closed liquid cooling circuit (57) and a liquid coolant agitator (59), wherein the closed liquid cooling circuit (57) is filled with liquid coolant being in direct or indirect thermal contact with the stator (43) and/or the power electronics (45), wherein the liquid coolant agitator (59) is arranged and configured to circulate the liquid coolant along the closed liquid cooling circuit (57), wherein the liquid coolant agitator (59) is mounted within the closed liquid cooling circuit (57) to be rotatable about the rotor axis (R), and wherein the liquid coolant agitator (59) is magnetically coupled to one or more of the movable parts.
The present disclosure refers to a pump assembly (1) comprising: - an electric drive motor (5) comprising at least a motor drive shaft (35) and a rotor (41), wherein the motor drive shaft (35) extends along a rotor axis (R) and the rotor (41) is mechanically coupled to the motor drive shaft (35); and - a pump housing (3) enclosing an impeller (13) that is mechanically coupled to a pump drive shaft (33), wherein the pump drive shaft (33) extends along the rotor axis (R), wherein the motor drive shaft (35) is releasably coupled to the pump drive shaft (33) by a drive shaft coupling (37) for transferring torque from the motor drive shaft (35) to the pump drive shaft (33), characterised by the motor drive shaft (35) being hollow from a first axial motor drive shaft end (81) to a second axial motor drive shaft end (83), wherein the pump drive shaft (33) protrudes into the hollow motor drive shaft (35) at the first axial motor drive shaft end (81), wherein the drive shaft coupling (37) is arranged at least partly within the hollow motor drive shaft (35) for transferring torque from the motor drive shaft (35) to the pump drive shaft (33) by frictional connection with a radial inner surface (89) of the hollow motor drive shaft (35) and/or a radial outer surface (93) of the pump drive shaft (33), wherein the drive shaft coupling (37) is accessible by an elongate tool through the second axial hollow motor drive shaft drive end (83) for selectively tightening and releasing the drive shaft coupling (37).
F04D 29/044 - Arrangements for joining or assembling shafts
F16D 1/08 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key
F16D 1/097 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic or segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping with clamping effected by ring expansion only, e.g. with an expanded ring located between hub and shaft
F16D 1/093 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with clamping hubCouplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end with hub and longitudinal key with radial clamping due to axial loading of at least one pair of conical surfaces using one or more elastic or segmented conical rings forming at least one of the conical surfaces, the rings being expanded or contracted to effect clamping
A pump device comprising a rotational pump mechanism arranged for pumping a fluid between a fluid inlet and a fluid outlet upon rotation provided by an electric motor having an electrically conductive motor casing electrically connected to Protective Earth. Electric power wires for providing electric power to drive the electric motor are connected to an electric inverter arranged for connection to an electric power source. An electrically conductive shield, e.g., one-sided or forming a duct, is arranged along the electric power wires at least at a part of, or all of, a distance between the electrically conductive motor casing and the electric inverter. One end of the electrically conductive shield is electrically connected to the electrically conductive motor casing and the opposite end of the electrically conductive shield is electrically connected to a DC electric potential different from Protective Earth via at least one electric capacitor. This arrangement reduces electromagnetic radiation from the pump device to an acceptable level, even in case the electric inverter is based on Wide Band-Gap semiconductor switches (e.g. GaN or SiC) involving voltage slopes exceeding 10 V/ns. This allows a casing around electronic components of the pump device to be made of a composite and still allows EMC compliance.
H02K 11/02 - Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for suppression of electromagnetic interference
H02K 11/33 - Drive circuits, e.g. power electronics
H02M 1/44 - Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
The invention relates to a centrifugal pump assembly having an electric drive motor (2), at least one impeller (14) driven by said electric drive motor (2) and a valve element (24; 24′) rotatable between two 5 valve positions driven by a fluid flow produced by said impeller (14), wherein the valve element (24; 24′) has a cover plate (104; 104′) extending transverse to the rotational axis (X) of the impeller (14) and facing the impeller (14), wherein the valve element (24; 24′) having protrusions (102, 102′) arranged on an outer surface side facing away 10 from the impeller (14) such that a flow can act on them for driving the valve element (24; 24′).
Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the apparatus comprising a vibration sensor operable to output a vibration sensor signal indicative of sensed vibrations of one or more components of the fluid system, and a processing unit configured to: obtain a vibration velocity signal from the vibration sensor signal, the vibration velocity signal being indicative of a vibration velocity of the one or more components of the fluid system; detect one or more peaks in the vibration velocity signal; and classify one or more of the detected peaks as a hydraulic shock event.
Disclosed herein are embodiments of an apparatus for detecting hydraulic shock events in a fluid system, the fluid system comprising a pump assembly, the pump assembly comprising a pump, in particular a centrifugal pump, and a pump motor, the apparatus comprising means for monitoring a pump speed of the pump and/or for monitoring a motor frequency; and a processing unit configured to detect a variation in the monitored pump speed and/or motor frequency; and detect a hydraulic shock event from the detected variation in the monitored pump speed and/or motor frequency.
The invention relates to a temperature sensor device (6) for measuring a temperature of a liquid flowing through a pump (1). The temperature sensor device comprises a temperature sensor (7), at least one connector (10) configured to electrically connect the temperature sensor to at least one printed circuit board (5) of the pump, and a sensor cup (11). The sensor cup comprises a circumferential cup wall (12) extending between a closed end (13) and an open end (14) of the sensor cup. The cup wall surrounds an inner cavity (15), and the sensor cup is dimensioned and shaped for having the closed end arranged in physical contact with a rotor can (3) of the pump during use, such as extending in a liquid tight manner through an opening (21) in a rotor can. A heat transfer medium (16) is present in the inner cavity. The temperature sensor and the sensor cup are mutually arranged with the temperature sensor extending into the heat transfer medium so that during use of the temperature sensor device, the temperature sensor can measure the temperature of the liquid via the heat transfer medium.
The invention relates to a method of controlling a power limit (P) of a circulating pump (1) comprising a critical component (4) and a first temperature sensor (5) arranged and configured to measure the temperature of the critical component. The first temperature sensor may be arranged on top of, below, integrated with, or in the vicinity of the critical component. The method comprises monitoring the temperature (T) of the critical component by use of the first temperature sensor and using an output signal (6) from the first temperature sensor as a first temperature input signal (7) to a controller (8). By use of the controller and based on the first temperature input signal, the power limit of the circulating pump is controlled in accordance with a performance derating curve for the circulating pump. The invention further relates to a system (3) for controlling a power limit of a circulating pump by use of such a method.
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
H02H 7/08 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
H02H 7/085 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
F04D 1/00 - Radial-flow pumps, e.g. centrifugal pumpsHelico-centrifugal pumps
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
The invention refers to a membrane filtration system having at least one membrane (6), an inlet (8) and a concentrate outlet (16) on one side of the membrane (6), a permeate outlet (12) on the other side of the membrane (6), wherein the system comprises a concentrate draining device (4) comprising at least one pump (22) and being connected to said concentrate outlet (16), and to a concentrate draining device for a membrane filtration system.
A method serves for operating an electronically controlled pump assembly (1), with which setting parameters of the pump (2) can be adjusted in an electronic control (6), for adaptation to the hydraulic demands of the location installation situation (4, 5). Operating data is registered during the operation of the pump assembly (1). After a predefined time and on the basis of the registered operating data, it is examined as to whether the pump assembly (1) has been set vis-à-vis the factory settings. If this is not the case a signal (11) is issued in order to point out the necessary setting.
The invention relates to a method for determining an efficiency of a cooling system comprising a plurality of electrically powered cooling devices, said cooling system is configured to ramp the total cooling capacity up and down by turning the one or more cooling devices on and off either fully or partly. The method involves providing corresponding values of estimated electrical power consumption and total rated cooling capacity and monitoring and recording the total electrical power consumed by the system.
G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
The invention is a motor component (1) for an electrical machine (20). The motor component has a carrying body (2) from which a plurality of teeth (3) extend radially inwards or outwards. The motor component comprises two subcomponents (8, 9) which are dimensioned and shaped so that they can be joined by relative mutual axial displacement along the axis of rotation. The subcomponents each comprises every second of the teeth of the motor component. The carrying body has a tooth carrying surface (10) of polygonal shape with a number of sides corresponding to the number of teeth. The invention also relates to an electrical machine comprising at least one motor component and to a method of manufacturing such an electrical machine. At least some of the surfaces of the subcomponents that face towards a corresponding surface of the other subcomponent are inclined with respect to an orientation of the axis of rotation.
H02K 15/02 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
99.
DEVICE AND METHOD FOR CONTROLLING OPERATIONAL VIBRATIONS OF A PUMP OR PUMP ASSEMBBLY
The invention is a device (1) for controlling operational vibrations of a pump (2) or pump assembly arranged thereon. In some embodiments, it comprises a mounting plate (3) configured to have the pump or pump assembly arranged on a surface thereof. The device comprises at least one actuator (6) configured to switch between a first state in which it provides a connection between the pump or pump assembly and an associated carrying surface or between the mounting plate and the carrying surface, and a second state in which there is no such connection via the at least one actuator. Activation of the at least one actuator to switch between the first and the second states is controllable so that resonance characteristics of the pump or pump assembly during operation can be changed by the activation.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
42 - Scientific, technological and industrial services, research and design
Goods & Services
Pumps [machines]; Pumps (parts of machine, engine and motor); Vehicle water pumps; Valves [machine parts]; Regulating valves; Centrifugal pumps; Vacuum pumps [machines]; Self-regulating fuel pumps; Compressed air pumps; Valves (parts of machines, engines and motors).. Data processing devices; Computer software, recorded; Mobile phone application software; Measuring apparatus; Electric connectors; Electric device for the remote control of industrial operations; Signal transmitters; Computer software applications, downloadable; Computer programmes, recorded; Electric regulating apparatus.. Cooling apparatus and devices; Water heaters; Water supply devices; Water distribution apparatus; Refrigerators; Heating apparatus; Water intake apparatus; Heating installations; Heat pumps; Cooling installations for water.. Product testing; Machine function testing; Quality control of goods and services; Technical research; Scientific research; Research and development of new products for others; research relating to physics; Providing computer programming for others for business analysis and report; Computer systems design; Computer programming; Consultancy in the field of energy saving; Research in the field of environmental protection.
