A method includes receiving, by a processing device and from a variable frequency drive coupled to one or more compressors, operation information of the one or more compressors. The method also includes comparing the operation information of the one or more compressors to an operation threshold and determining that the operation information satisfies the operation threshold. The method also includes changing, based on the determination that the operation information of the one or more compressors satisfies the operation threshold, an operation parameter of a component of the refrigeration system. Changing the operation parameter increases at least one of: (i) a velocity of a working fluid in a piping assembly fluidly coupled to the one or more compressors, or (ii) a flow rate of an oil in the piping assembly flowing into the one or more compressors.
Refrigeration systems and equipment, sold as a unit,
comprised of compressors, condensers and power sources for
refrigerated display cases used in supermarkets, grocery
stores, convenience stores, restaurants, and other retail
food outlets.
Refrigeration systems and equipment, sold as a unit,
comprised of compressors, condensers and power sources for
refrigerated display cases used in supermarkets, grocery
stores, convenience stores, restaurants, and other retail
food outlets.
Emergency cooling units for refrigeration systems; cooling
apparatus for use with refrigeration systems to preserve
refrigeration levels; component part for refrigeration
systems for preserving refrigeration levels.
Emergency cooling units for refrigeration systems; cooling
apparatus for use with refrigeration systems to preserve
refrigeration levels; component part for refrigeration
systems for preserving refrigeration levels.
(1) Refrigeration systems and equipment, sold as a unit, comprised of compressors, condensers and power sources for refrigerated display cases used in supermarkets, grocery stores, convenience stores, restaurants, and other retail food outlets.
(1) Refrigeration systems and equipment, sold as a unit, comprised of compressors, condensers and power sources for refrigerated display cases used in supermarkets, grocery stores, convenience stores, restaurants, and other retail food outlets.
Systems and method for operating a refrigeration system include a heat exchanger configured to remove heat from a refrigerant and discharge the refrigerant into a conduit. A temperature sensor, a pressure sensor, and a pressure control valve are located along the conduit. A controller is configured to determine that the refrigerant leaving the heat exchanger is outside of a subcritical region based on the measured temperature or measured pressure of the refrigerant. A target temperature is determined based at least in part on a pseudo-subcooling temperature value and the measured temperature of the refrigerant. A supercritical pseudo-saturated pressure is determined based on the target temperature. A pressure offset is determined based on the target temperature, a maximum operating pressure of the refrigeration system, and an offset factor. The pressure control valve is operated to drive the pressure to a target pressure based on the pressure offset and the pseudo-saturated pressure.
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
11.
CO2 REFRIGERATION SYSTEM WITH SUPERCRITICAL SUBCOOLING CONTROL
Systems and method for operating a refrigeration system include a heat exchanger configured to remove heat from a refrigerant and discharge the refrigerant into a conduit. A temperature sensor, a pressure sensor, and a pressure control valve are located along the conduit. A controller is configured to determine that the refrigerant leaving the heat exchanger is outside of a subcritical region based on the measured temperature or measured pressure of the refrigerant. A target temperature is determined based at least in part on a pseudo-subcooling temperature value and the measured temperature of the refrigerant. A supercritical pseudo-saturated pressure is determined based on the target temperature. A pressure offset is determined based on the target temperature, a maximum operating pressure of the refrigeration system, and an offset factor. The pressure control valve is operated to drive the pressure to a target pressure based on the pressure offset and the pseudo-saturated pressure.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 9/10 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé avec plusieurs étages de refroidissement
(1) Emergency cooling units for refrigeration systems; cooling apparatus for use with refrigeration systems to preserve refrigeration levels; component part for refrigeration systems for preserving refrigeration levels.
(1) Emergency cooling units for refrigeration systems; cooling apparatus for use with refrigeration systems to preserve refrigeration levels; component part for refrigeration systems for preserving refrigeration levels.
A refrigerated display case door glass panel assembly includes a first pane of glass and a second pane of glass bounding a sealed space between the panes, and an electrically conductive coating applied to a surface of the first pane. The coating extending across at least a majority of a viewing area of the first pane. A first pair of electrical buses spaced apart from one another and electrically connected to the coating at respective first and second ends of the first pane, the first and second ends being opposite one another, and a second pair of electrical buses spaced apart from one another and electrically connected to the coating at respective third and fourth ends of the first pane. The third and fourth ends being opposite one another and adjacent to the first and second ends.
Systems, methods, and devices for evaporative cooling include one or more heat exchanger coils, one or more evaporative pads external to the one or more heat exchanger coils, and one or more nozzle assemblies external to the one or more evaporative pads. The one or more nozzle assemblies can be coupled to a supply of liquid and configured to provide the liquid to at least one of the one or more evaporative pads. A basin can be configured to collect a portion of liquid from the one or more evaporative pads, and an injector disposed between the supply of liquid and the one or more nozzle assemblies. The injector includes a first inlet coupled to the supply of liquid, a second inlet coupled to the basin, and an outlet coupled to the one or more nozzle assemblies.
Systems, methods, and devices for evaporative cooling include one or more heat exchanger coils, one or more evaporative pads external to the one or more heat exchanger coils, and one or more nozzle assemblies external to the one or more evaporative pads. The one or more nozzle assemblies can be coupled to a supply of liquid and configured to provide the liquid to at least one of the one or more evaporative pads. A basin can be configured to collect a portion of liquid from the one or more evaporative pads, and an injector disposed between the supply of liquid and the one or more nozzle assemblies. The injector includes a first inlet coupled to the supply of liquid, a second inlet coupled to the basin, and an outlet coupled to the one or more nozzle assemblies.
F24F 6/04 - Humidification de l'air par évaporation d'eau dans l'air en utilisant des éléments humides fixes non chauffés
F28B 9/04 - Systèmes auxiliaires, aménagements ou dispositifs accessoires pour amener, recueillir et emmagasiner l'eau ou autre liquide de refroidissement
Systems and methods for deploying a defrost heater include a rod heater bracket including a body including a first edge and a second edge opposite the first edge. The bracket includes at least one L-shaped slot formed in the body, the L-shaped slot including an opening along the first edge, and a groove located adjacent to the second edge and configured to retain at least a portion of a rod heater adjacent an evaporator of a refrigerated display case. The rod heater bracket includes a tab configured to adjust between an open position to allow access to the groove through the second edge and a closed position to block access to the opening between the second edge and the groove.
F25D 21/08 - Enlèvement du givre par chauffage électrique
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
B23P 15/26 - Fabrication d'objets déterminés par des opérations non couvertes par une seule autre sous-classe ou un groupe de la présente sous-classe d'échangeurs de chaleur
18.
Refrigeration Systems with a First Compressor System and a Second Compressor System
A refrigeration system includes a first compressor system, a second compressor system, a first conduit, a heat exchanger, a second conduit, and a third conduit. The first compressor system includes a plurality of first compressors. The second compressor system includes a plurality of second compressors. The first conduit is configured to provide refrigerant from the first compressor system to the second compressor system. The second conduit is fluidly coupled to the first conduit and configured to provide the refrigerant from the first compressor system to the heat exchanger. The third conduit is configured to provide the refrigerant from the second compressor system to the heat exchanger.
A method of operating a cooling system having one or more evaporative pads includes: obtaining measurements of one or more ambient conditions associated with the cooling system; determining, based at least in part on at least one of the one or more ambient conditions and one or more characteristics of at least one of the one or more evaporative pads, an available evaporation rate; and controlling, based at least in part on the available evaporation rate, an application rate of water to at least one of the one or more evaporative pads.
A method of operating a cooling system having one or more evaporative pads includes: obtaining measurements of one or more ambient conditions associated with the cooling system; determining, based at least in part on at least one of the one or more ambient conditions and one or more characteristics of at least one of the one or more evaporative pads, an available evaporation rate; and controlling, based at least in part on the available evaporation rate, an application rate of water to at least one of the one or more evaporative pads.
A refrigerated display case chassis includes a first insulated panel and a second insulated panel. The first insulated panel has a first foam layer bounded by a first pair of thermally conductive sheets. The first insulated panel forms a first wall of the refrigerated display case chassis. The second insulated panel has a second foam layer bounded by a second pair of thermally conductive sheets. The second insulated panel forms a second wall of the refrigerated display case chassis. The second insulated panel mates with the first insulated panel to form a thermally insulated joint where, in cross-section, one sheet of the first pair of thermally conductive sheets terminates at a surface of the second foam layer. The thermally conductive sheets have a greater thermal conductivity than the first or second foam layers.
A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 21/00 - Machines, installations ou systèmes utilisant des effets électriques ou magnétiques
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining if a product in a refrigerated display case has likely spoiled. The method can include: obtaining, from one or more thermal cameras installed in a refrigerated case, multiple images of the inside of the refrigerated case; determining, based on the multiple images, a surface temperature of one or more products contained in the refrigerated case; determining that the surface temperature of at least one product violated a spoilage temperature for a period of time; and in response to determining that the surface temperature of at least one product violated a spoilage temperature for a period of time, providing, for display on a user computing system, a graphical interface indicating that the product is likely spoiled.
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for determining if a product in a refrigerated display case has likely spoiled. The method can include: obtaining, from one or more thermal cameras installed in a refrigerated case, multiple images of the inside of the refrigerated case; determining, based on the multiple images, a surface temperature of one or more products contained in the refrigerated case; determining that the surface temperature of at least one product violated a spoilage temperature for a period of time; and in response to determining that the surface temperature of at least one product violated a spoilage temperature for a period of time, providing, for display on a user computing system, a graphical interface indicating that the product is likely spoiled.
Refrigeration systems and equipment, sold as a unit, comprised of compressors, condensers and power sources for refrigerated display cases used in supermarkets, grocery stores, convenience stores, restaurants, and other retail food outlets
Refrigeration systems and equipment, sold as a unit, comprised of compressors, condensers and power sources for refrigerated display cases used in supermarkets, grocery stores, convenience stores, restaurants, and other retail food outlets
22 refrigerant to the second side of the heat exchanger of the medium temperature subsystem and to low temperature loads of the low temperature subsystem..
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 5/04 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en série
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 40/00 - Sous-refroidisseurs, désurchauffeurs ou surchauffeurs
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique
Emergency cooling units for industrial purposes for refrigeration systems; cooling apparatus for use with refrigeration systems to preserve refrigeration levels; component part for refrigeration systems being a cooling apparatus for preserving refrigeration levels
Emergency cooling units for industrial purposes for refrigeration systems; cooling apparatus for use with refrigeration systems to preserve refrigeration levels; component part for refrigeration systems being a cooling apparatus for preserving refrigeration levels
30.
Refrigeration system with efficient expansion device control, liquid refrigerant return, oil return, and evaporator defrost
A refrigeration system includes an evaporator configured to receive a flow of refrigerant and transfer heat into the refrigerant within the evaporator to provide cooling for a temperature-controlled space, an expansion valve operable to modulate the flow of refrigerant into the evaporator, a liquid level sensor configured to measure a level of liquid accumulated within a component of the refrigeration system, and a controller configured to operate the expansion valve to increase the flow of refrigerant into the evaporator or decrease the flow of refrigerant into the evaporator based on the level of liquid measured by the liquid level sensor.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur pour la séparation des lubrifiants du frigorigène
A refrigeration system includes a receiver, a gas bypass valve, a medium temperature subsystem, a first valve system, a second valve system, and a controller. The medium temperature subsystem includes one or more expansion valves, one or more medium temperature evaporators, and a suction group including two or more transcritical compressors. The first valve system is fluidly coupled to a first one of the transcritical compressors. The second valve system is fluidly coupled to a second one of the transcritical compressors. The controller is configured to activate each transcritical compressor to operate as a parallel compressor by modulating its valve system to switch a suction input of the transcritical compressor from an evaporator outlet of the one or more medium temperature evaporators to the outlet of the receiver.
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
A refrigeration system includes a receiver, a gas bypass valve, a medium temperature subsystem, a first valve system, a second valve system, and a controller. The gas bypass valve is operable to control a pressure of the refrigerant in the receiver. The medium temperature subsystem includes one or more expansion valves, one or more medium temperature evaporators, and a suction group including two or more transcritical compressors operable to compress gas refrigerant and discharge the compressed gas refrigerant into a discharge line. The first valve system is fluidly coupled to a first one of the transcritical compressors. The second valve system is fluidly coupled to a second one of the transcritical compressors. The controller is configured to activate each of the first and second transcritical compressors to operate as a parallel compressor by modulating its valve system to switch a suction input of the transcritical compressor from an evaporator outlet of the one or more medium temperature evaporators to the outlet of the receiver.
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
A thermoelectric cooling system includes a first circuit, a second circuit, a circuit heat exchanger, and a thermoelectric subsystem. The first circuit is configured to circulate a first refrigerant. The second circuit is configured to circulate a second refrigerant. The circuit heat exchanger includes a circuit heat exchanger first passage and a circuit heat exchanger second passage. The circuit heat exchanger first passage is coupled to the first circuit and configured to receive the first refrigerant from the first circuit and provide the first refrigerant to the first circuit. The circuit heat exchanger second passage is coupled to the second circuit and configured to receive the second refrigerant from the second circuit and provide the second refrigerant to the second circuit. The thermoelectric subsystem includes a thermoelectric subsystem first heat exchanger and a first thermoelectric cell. The thermoelectric subsystem first heat exchanger has a thermoelectric subsystem first heat exchanger passage.
F25B 21/02 - Machines, installations ou systèmes utilisant des effets électriques ou magnétiques utilisant l'effet PeltierMachines, installations ou systèmes utilisant des effets électriques ou magnétiques utilisant l'effet Nernst-Ettinghausen
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
H10N 10/17 - Dispositifs thermoélectriques comportant une jonction de matériaux différents, c.-à-d. dispositifs présentant l'effet Seebeck ou l'effet Peltier fonctionnant exclusivement par les effets Peltier ou Seebeck caractérisés par la structure ou la configuration de la cellule ou du thermocouple constituant le dispositif
A refrigeration system having a primary receiver, a secondary receiver, a first gas bypass valve, and second gas bypass valve, a feed control valve, and a controller. The primary receiver has a primary receiver operating pressure and is configured to collect a refrigerant circulated by the refrigeration system. The secondary receiver includes a liquid refrigerant inlet fluidly coupled to a primary receiver liquid refrigerant outlet. The feed control valve is coupled between the primary receiver liquid outlet and the secondary receiver liquid refrigerant inlet. The controller operates the feed control valve to control a flow of a liquid refrigerant from the primary receiver to the secondary receiver.
The present disclosure generally relates to a temperature-controlled displays and refrigeration systems for temperature-controlled displays. For instance, in one implementation a temperature-controlled display includes a multi-loop refrigeration system with reclaim heating and a condensation control system. The refrigeration system includes a refrigeration loop and a cooling loop in thermal communication with the refrigeration loop. The refrigeration loop is configured to refrigerate the temperature-controlled display. The cooling loop is configured to remove heat from the refrigeration loop and provide the heat removed from the refrigeration loop as reclaim heat. The condensation control system includes a heat exchanger in thermal communication with the cooling loop. The heat exchanger is configured to transfer the reclaim heat from the cooling loop to a flow of air directed over a transparent surface of the temperature-controlled display.
A refrigeration system having a primary receiver, a secondary receiver, a first gas bypass valve, and second gas bypass valve, a feed control valve, and a controller. The primary receiver has a primary receiver operating pressure and is configured to collect a refrigerant circulated by the refrigeration system. The secondary receiver includes a liquid refrigerant inlet fluidly coupled to a primary receiver liquid refrigerant outlet. The feed control valve is coupled between the primary receiver liquid outlet and the secondary receiver liquid refrigerant inlet. The controller operates the feed control valve to control a flow of a liquid refrigerant from the primary receiver to the secondary receiver.
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 41/42 - Agencements pour diviser ou combiner des flux, p. ex. embranchements ou jonctions
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
37.
Increasing a flow rate of oil into a compressor of a refrigeration assembly
A method includes receiving, by a processing device and from a variable frequency drive coupled to one or more compressors, operation information of the one or more compressors. The method also includes comparing the operation information of the one or more compressors to an operation threshold and determining that the operation information satisfies the operation threshold. The method also includes changing, based on the determination that the operation information of the one or more compressors satisfies the operation threshold, an operation parameter of a component of the refrigeration system. Changing the operation parameter increases at least one of: (i) a velocity of a working fluid in a piping assembly fluidly coupled to the one or more compressors, or (ii) a flow rate of an oil in the piping assembly flowing into the one or more compressors.
A heat exchanger for a temperature controlled case is disclosed herein. A temperature controlled case includes a housing that defines a temperature controlled space. The housing includes a duct that receives circulated air. A heat exchanger is coupled to the housing and disposed within the duct. The heat exchanger includes an intake face at a non-perpendicular angle relative to an air flow direction in the duct immediately upstream of the heat exchanger.
A CO2 refrigeration system includes a plurality of compressors configured to circulate a CO2 refrigerant, a suction line configured to deliver the CO2 refrigerant to the compressors, an oil separator configured to separate oil from the CO2 refrigerant, and an oil return line configured to deliver the oil from the oil separator to the suction line. The oil mixes with the CO2 refrigerant in the suction line before reaching the compressors.
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
C09K 5/04 - Substances qui subissent un changement d'état physique lors de leur utilisation le changement d'état se faisant par passage de l'état liquide à l'état vapeur ou vice versa
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur pour la séparation des lubrifiants du frigorigène
40.
CO2 REFRIGERATION SYSTEM WITH EXTERNAL COOLANT CONTROL
A refrigeration system includes a refrigeration subsystem and a coolant subsystem. The refrigeration subsystem is configured to circulate a refrigerant between an evaporator (12,22) within which a refrigerant absorbs heat and a gas cooler/condenser (2) within which the refrigerant rejects heat to provide cooling to a temperature-controlled space. The coolant subsystem includes a heat exchanger (61) coupled to the refrigeration subsystem at an outlet of the gas cooler/condenser and configured to transfer heat from the refrigerant exiting the gas cooler/condenser to an external coolant when the external coolant flows through the heat exchanger, a control valve (64), and a controller (50) configured to operate the control valve to control a flow of at least one of the refrigerant or the external coolant through the heat exchanger based on a temperature of the external coolant relative to a temperature of the refrigerant exiting the gas cooler/condenser.
F25B 6/04 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs disposés en série
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 9/10 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé avec plusieurs étages de refroidissement
41.
Cooling system with a distribution system and a cooling unit
A cooling system includes a distribution system and a cooling unit. The distribution system is configured to circulate a distribution system refrigerant. The distribution system includes a distribution system pump, a main cooler, a distribution system input conduit, and a distribution system output conduit. The main cooler is configured to receive the distribution system refrigerant from the distribution system pump. The distribution system input conduit is configured to receive the distribution system refrigerant from the main cooler. The distribution system output conduit is configured to receive the distribution system refrigerant from the distribution system input conduit and to provide the distribution system refrigerant to the distribution system pump. The cooling unit is configured to circulate a cooling unit refrigerant. The cooling unit includes a cooling unit pump, an upstream receiver, a condenser, a downstream receiver, and an evaporator. The upstream receiver is configured to receive the cooling unit refrigerant.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
42.
Refrigeration system with combined superheat and subcooling control
A controller for a refrigeration system includes a processing circuit having one or more processors and memory. The processing circuit is configured to calculate a superheat of a gas refrigerant exiting a first side of a subcooler based on a measured temperature and a measured pressure of the gas refrigerant and compare the calculated superheat to a superheat threshold. In response to a determination that the calculated superheat is less than the superheat threshold, the processing circuit closes an expansion valve to restrict a flow of the gas refrigerant through a second side of the subcooler. In response to a determination that the calculated superheat is equal to or greater than the superheat threshold, the processing circuit operates the expansion valve to drive a temperature of a subcooled liquid refrigerant exiting the second side of the subcooler to a subcooled liquid temperature setpoint.
F25B 41/34 - Soupapes de détente l’organe de soupape étant actionné par des moyens électriques, p. ex. par des actionneurs piézo-électriques
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 6/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs disposés en parallèle
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Software as a service (SAAS) services featuring software for
designing, developing, and enabling the purchase and sale of
refrigeration systems; software as a service (SAAS) services
featuring software for storing, viewing and downloading
technical product data for refrigeration systems.
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Software as a service (SAAS) services featuring software for
designing, developing, and enabling the purchase and sale of
refrigeration systems; software as a service (SAAS) services
featuring software for storing, viewing and downloading
technical product data for refrigeration systems.
A display case includes multiple walls that define an inner volume, a door, a door actuator, a gesture sensor, and a controller. The door is transitionable between an open position for access to the inner volume and a closed position. The door actuator is configured to transition the door between the open position and the closed position. The gesture sensor is configured to detect a gesture performed by a user. The controller includes a processing circuit configured to obtain sensor data from the gesture sensor that indicates the gesture performed by the user. The processing circuit is further configured to determine if the user has performed a reference gesture using the sensor data. The processing circuit is further configured to operate the door actuator to transition the door between the open position and the closed position in response to determining that the user has performed the reference gesture.
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Software as a service (SAAS) services featuring software for designing, developing, and enabling the purchase and sale of refrigeration systems; software as a service (SAAS) services featuring software for storing, viewing and downloading technical product data for refrigeration systems.
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
(1) Software as a service (SAAS) services featuring software for designing, developing, and enabling the purchase and sale of refrigeration systems; software as a service (SAAS) services featuring software for storing, viewing and downloading technical product data for refrigeration systems.
48.
Expansion Valve Position Detection in Refrigeration System
A refrigerated display case having a housing defining a temperature controlled space and a refrigeration system coupled to the housing is provided. The refrigeration system is configured to be operable to affect a temperature of the temperature controlled space. The refrigeration system includes an actuator, a controller, and a sensor. The controller is configured to continuously update a stored position of the actuator based on measurement of an electric current provided to the actuator, retrieve the stored position after a power failure, and restart control based on the stored position of the actuator. The sensor is configured to communicate with the controller.
A method of detecting electrical failure in a refrigeration system is provided. The method includes determining whether a present superheat of the refrigeration system is between a maximum superheat and a minimum superheat for the refrigeration system, the maximum superheat and the minimum superheat defining a normal operating range. The method also includes detecting an electrical property of an expansion valve assembly of the refrigeration system responsive to the superheat being outside the normal operating range. The method further includes determining whether the expansion valve assembly as experienced an electrical failure based on at least the electrical property. A signal indicating that the expansion valve has experienced an electrical failure is generated based on a determination that the expansion valve assembly has experienced the electrical failure.
A cooling system includes a distribution system and a cooling unit. The distribution system is configured to circulate a distribution system refrigerant. The distribution system includes a distribution system pump, a main cooler, a distribution system input conduit, and a distribution system output conduit. The main cooler is configured to receive the distribution system refrigerant from the distribution system pump. The distribution system input conduit is configured to receive the distribution system refrigerant from the main cooler. The distribution system output conduit is configured to receive the distribution system refrigerant from the distribution system input conduit and to provide the distribution system refrigerant to the distribution system pump. The cooling unit is configured to circulate a cooling unit refrigerant. The cooling unit includes a cooling unit pump, an upstream receiver, a condenser, a downstream receiver, and an evaporator. The upstream receiver is configured to receive the cooling unit refrigerant.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
51.
Refrigeration system with efficient expansion device control, liquid refrigerant return, oil return, and evaporator defrost
A refrigeration system includes an evaporator configured to receive a flow of refrigerant and transfer heat into the refrigerant within the evaporator to provide cooling for a temperature-controlled space, an expansion valve operable to modulate the flow of refrigerant into the evaporator, a liquid level sensor configured to measure a level of liquid accumulated within a component of the refrigeration system, and a controller configured to operate the expansion valve to increase the flow of refrigerant into the evaporator or decrease the flow of refrigerant into the evaporator based on the level of liquid measured by the liquid level sensor.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquidesDispositions pour la vaporisation des résidus de fluides frigorigènes, p. ex. par la chaleur pour la séparation des lubrifiants du frigorigène
A method includes receiving, by a processing device and from a variable frequency drive coupled to one or more compressors, operation information of the one or more compressors. The method also includes comparing the operation information of the one or more compressors to an operation threshold and determining that the operation information satisfies the operation threshold. The method also includes changing, based on the determination that the operation information of the one or more compressors satisfies the operation threshold, an operation parameter of a component of the refrigeration system. Changing the operation parameter increases at least one of: (i) a velocity of a working fluid in a piping assembly fluidly coupled to the one or more compressors, or (ii) a flow rate of an oil in the piping assembly flowing into the one or more compressors.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
A method includes receiving, by a processing device and from a variable frequency drive coupled to one or more compressors, operation information of the one or more compressors. The method also includes comparing the operation information of the one or more compressors to an operation threshold and determining that the operation information satisfies the operation threshold. The method also includes changing, based on the determination that the operation information of the one or more compressors satisfies the operation threshold, an operation parameter of a component of the refrigeration system. Changing the operation parameter increases at least one of: (i) a velocity of a working fluid in a piping assembly fluidly coupled to the one or more compressors, or (ii) a flow rate of an oil in the piping assembly flowing into the one or more compressors.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
A refrigeration assembly includes a receiver tank, a heat exchanger, a first piping assembly, and a second piping assembly. The receiver tank has a fluid outlet and a fluid inlet that receives a working fluid. The heat exchanger is disposed within the receiver tank. The heat exchanger has coiled tubing that is fluidly coupled to the fluid inlet and to the fluid outlet. The first piping assembly is disposed between and is fluidly coupled to the fluid inlet and the coiled tubing. The first piping assembly has a first double riser and a first P-trap. The second piping assembly is disposed between and is fluidly coupled to the fluid outlet and the coiled tubing. The second piping assembly includes a second double riser and a second P-trap.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
A refrigeration assembly includes a receiver tank, a heat exchanger, a first piping assembly, and a second piping assembly. The receiver tank has a fluid outlet and a fluid inlet that receives a working fluid. The heat exchanger is disposed within the receiver tank. The heat exchanger has coiled tubing that is fluidly coupled to the fluid inlet and to the fluid outlet. The first piping assembly is disposed between and is fluidly coupled to the fluid inlet and the coiled tubing. The first piping assembly has a first double riser and a first P-trap. The second piping assembly is disposed between and is fluidly coupled to the fluid outlet and the coiled tubing. The second piping assembly includes a second double riser and a second P-trap.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 40/00 - Sous-refroidisseurs, désurchauffeurs ou surchauffeurs
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Software as a service (SAAS) services featuring software for designing, developing, and enabling the purchase and sale of refrigeration systems; Software as a service (SAAS) services featuring software for storing, viewing and downloading technical product data for refrigeration systems
A refrigeration assembly includes a receiver tank, a heat exchanger, a first piping assembly, and a second piping assembly. The receiver tank has a fluid outlet and a fluid inlet that receives a working fluid. The heat exchanger is disposed within the receiver tank. The heat exchanger has coiled tubing that is fluidly coupled to the fluid inlet and to the fluid outlet. The first piping assembly is disposed between and is fluidly coupled to the fluid inlet and the coiled tubing. The first piping assembly has a first double riser and a first P-trap. The second piping assembly is disposed between and is fluidly coupled to the fluid outlet and the coiled tubing. The second piping assembly includes a second double riser and a second P-trap.
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Software as a service (SAAS) services featuring software for designing, developing, and enabling the purchase and sale of refrigeration systems; Software as a service (SAAS) services featuring software for storing, viewing and downloading technical product data for refrigeration systems
62.
Increasing a flow rate of oil into a compressor of a refrigeration assembly
A method includes receiving, by a processing device and from a variable frequency drive coupled to one or more compressors, operation information of the one or more compressors. The method also includes comparing the operation information of the one or more compressors to an operation threshold and determining that the operation information satisfies the operation threshold. The method also includes changing, based on the determination that the operation information of the one or more compressors satisfies the operation threshold, an operation parameter of a component of the refrigeration system. Changing the operation parameter increases at least one of: (i) a velocity of a working fluid in a piping assembly fluidly coupled to the one or more compressors, or (ii) a flow rate of an oil in the piping assembly flowing into the one or more compressors.
The present disclosure generally relates refrigeration systems for temperature-controlled displays. For instance, one exemplary embodiment relates to a refrigeration system that includes a refrigeration circuit, a cooling circuit, a reclaim heat circuit, and a floor heating system. The refrigeration circuit includes a compressor driven by a brushless DC motor operable at multiple different speeds, a first heat exchanger, an expansion device, and a cooling unit in fluid communication using a first working fluid. The cooling unit is arranged to cool a temperature-controlled storage device. The cooling circuit includes a pump and a second heat exchanger in thermal communication with the first heat exchanger using a second working fluid such that the first heat exchanger is liquid-cooled by the second working fluid. The reclaim heat circuit is in fluid communication with the cooling circuit. The floor heating system is coupled to the heat reclaim circuit as a reclaim heat load.
A refrigeration system includes an evaporator within which a refrigerant absorbs heat, a gas cooler/condenser within which the refrigerant rejects heat, a compressor operable to circulate the refrigerant between the evaporator and the gas cooler/condenser, a high pressure valve operable to control a pressure of the refrigerant at an outlet of the gas cooler/condenser, and a controller. The controller is configured to automatically generate a setpoint for a measured or calculated variable of the refrigeration system based on a measured temperature of the refrigerant at the outlet of the gas cooler/condenser. The setpoint is generated using a stored relationship between the measured temperature and a maximum estimated coefficient of performance (COP) that can be achieved at the measured temperature. The controller is configured to operate the high pressure valve to drive the measured or calculated variable toward the setpoint.
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
68.
2 refrigeration system with magnetic refrigeration system cooling
A refrigeration system includes a refrigeration circuit and a coolant circuit separate from the refrigeration circuit. The refrigerant circuit includes a gas cooler/condenser, a receiver, and an evaporator. The coolant circuit includes a heat exchanger configured to transfer heat from a refrigerant circulating within the refrigeration circuit into a coolant circulating within the coolant circuit, a heat sink configured to remove heat from the coolant circulating within the coolant circuit, and a magnetocaloric conditioning unit configured to transfer heat from the coolant within a first fluid conduit of the coolant circuit into the coolant within a second fluid conduit of the coolant circuit. The first fluid conduit connects an outlet of the heat exchanger to an inlet of the heat sink, whereas the second fluid conduit connects an outlet of the heat sink to an inlet of the heat exchanger.
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 21/00 - Machines, installations ou systèmes utilisant des effets électriques ou magnétiques
A refrigeration system includes a first compressor system, a second compressor system, a first conduit, a heat exchanger, a second conduit, and a third conduit. The first compressor system includes a plurality of first compressors. The second compressor system includes a plurality of second compressors. The first conduit is configured to provide refrigerant from the first compressor system to the second compressor system. The second conduit is fluidly coupled to the first conduit and configured to provide the refrigerant from the first compressor system to the heat exchanger. The third conduit is configured to provide the refrigerant from the second compressor system to the heat exchanger.
An evaporative cooling device for a refrigeration system includes one or more heat exchanger coils, a first moisture panel, a second moisture panel, a first nozzle array, a second nozzle array, a moisture sensor, and a controller. The first moisture panel and the second moisture panel are separated by a distance and disposed external to the one or more heat exchanger coils. The first nozzle array is disposed external to the first moisture panel and the second nozzle array is disposed external to the second moisture panel. The first nozzle array and the second nozzle array are configured to provide an atomized spray of electrostatically charged droplets. The moisture sensor is configured to provide a signal representative of a moisture level. The controller is configured to receive the signal representative of the moisture level and control a supply of water.
A refrigerated display case chassis includes a first insulated panel and a second insulated panel. The first insulated panel has a first foam layer bounded by a first pair of thermally conductive sheets. The first insulated panel forms a first wall of the refrigerated display case chassis. The second insulated panel has a second foam layer bounded by a second pair of thermally conductive sheets. The second insulated panel forms a second wall of the refrigerated display case chassis. The second insulated panel mates with the first insulated panel to form a thermally insulated joint where, in cross-section, one sheet of the first pair of thermally conductive sheets terminates at a surface of the second foam layer. The thermally conductive sheets have a greater thermal conductivity than the first or second foam layers.
A refrigerated display case chassis includes a first insulated panel and a second insulated panel. The first insulated panel has a first foam layer bounded by a first pair of thermally conductive sheets. The first insulated panel forms a first wall of the refrigerated display case chassis. The second insulated panel has a second foam layer bounded by a second pair of thermally conductive sheets. The second insulated panel forms a second wall of the refrigerated display case chassis. The second insulated panel mates with the first insulated panel to form a thermally insulated joint where, in cross-section, one sheet of the first pair of thermally conductive sheets terminates at a surface of the second foam layer. The thermally conductive sheets have a greater thermal conductivity than the first or second foam layers.
A refrigerated display case is provided. The refrigerated display case includes a rear wall has a first end, a second end disposed opposite the first end and a plurality of markings disposed between the first end and the second end. A mounting rail is coupled to the rear wall. A shelf is adjustably coupleable to the mounting rail at a plurality of positions between the first end and the second end of the rear wall. The plurality of markings are configured to indicate a distance from the first end of the rear wall to the shelf based on alignment of the shelf with at least one of the plurality of markings.
A47B 57/34 - Meubles à tiroirs, étagères ou rayonnages caractérisés par la possibilité de régler les rayons ou les cloisons comprenant des moyens pour régler la hauteur des supports de rayons amovibles consistant en rebords, montants ou pieds-droits à rainures ou à encoches les parties rainurées ou encochées constituant les pieds-droits ou les montants eux-mêmes
A47B 57/42 - Meubles à tiroirs, étagères ou rayonnages caractérisés par la possibilité de régler les rayons ou les cloisons comprenant des moyens pour régler la hauteur des supports de rayons amovibles consistant en crochets s'engageant dans des ouvertures les supports de rayons étant en porte-à-faux
78.
Refrigeration systems with a first compressor system and a second compressor system
A refrigeration system includes a first compressor system, a second compressor system, a first conduit, a heat exchanger, a second conduit, and a third conduit. The first compressor system includes a plurality of first compressors. The second compressor system includes a plurality of second compressors. The first conduit is configured to provide refrigerant from the first compressor system to the second compressor system. The second conduit is fluidly coupled to the first conduit and configured to provide the refrigerant from the first compressor system to the heat exchanger. The third conduit is configured to provide the refrigerant from the second compressor system to the heat exchanger.
A refrigeration system includes a refrigeration subsystem and a coolant subsystem. The refrigeration subsystem is configured to circulate a refrigerant between an evaporator (12,22) within which a refrigerant absorbs heat and a gas cooler/condenser (2) within which the refrigerant rejects heat to provide cooling to a temperature- controlled space. The coolant subsystem includes a heat exchanger (61) coupled to the refrigeration subsystem at an outlet of the gas cooler/condenser and configured to transfer heat from the refrigerant exiting the gas cooler/condenser to an external coolant when the external coolant flows through the heat exchanger, a control valve (64), and a controller (50) configured to operate the control valve to control a flow of at least one of the refrigerant or the external coolant through the heat exchanger based on a temperature of the external coolant relative to a temperature of the refrigerant exiting the gas cooler/condenser.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 6/04 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs disposés en série
A refrigeration system includes a refrigeration subsystem and a coolant subsystem. The refrigeration subsystem is configured to circulate a refrigerant between an evaporator (12,22) within which a refrigerant absorbs heat and a gas cooler/condenser (2) within which the refrigerant rejects heat to provide cooling to a temperature- controlled space. The coolant subsystem includes a heat exchanger (61) coupled to the refrigeration subsystem at an outlet of the gas cooler/condenser and configured to transfer heat from the refrigerant exiting the gas cooler/condenser to an external coolant when the external coolant flows through the heat exchanger, a control valve (64), and a controller (50) configured to operate the control valve to control a flow of at least one of the refrigerant or the external coolant through the heat exchanger based on a temperature of the external coolant relative to a temperature of the refrigerant exiting the gas cooler/condenser.
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
81.
Refrigeration system with combined superheat and subcooling control
A controller for a refrigeration system includes a processing circuit having one or more processors and memory. The processing circuit is configured to calculate a superheat of a gas refrigerant exiting a first side of a subcooler based on a measured temperature and a measured pressure of the gas refrigerant and compare the calculated superheat to a superheat threshold. In response to a determination that the calculated superheat is less than the superheat threshold, the processing circuit closes an expansion valve to restrict a flow of the gas refrigerant through a second side of the subcooler. In response to a determination that the calculated superheat is equal to or greater than the superheat threshold, the processing circuit operates the expansion valve to drive a temperature of a subcooled liquid refrigerant exiting the second side of the subcooler to a subcooled liquid temperature setpoint.
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 6/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs disposés en parallèle
82.
Systems and methods for reducing condensation in refrigerated cases
A method for reducing sweating in a temperature-controlled display device includes receiving values of an ambient temperature, a door frame temperature, and relative humidity. The method can also include estimating a value of a dewpoint temperature using the values of the ambient temperature and the relative humidity. The method can also include determining control decisions for a door frame heater of the temperature-controlled display device using the value of the dewpoint temperature and the door frame temperature, and transitioning the door frame heater between an on-state and an off-state using the control decisions to maintain the value of the door frame temperature at or above the value of the dewpoint temperature.
A refrigeration system for a temperature-controlled storage device includes a refrigeration circuit that circulates a refrigerant, a separate cooling circuit that circulates a coolant, and a controller. The refrigeration circuit includes a compressor, a condenser, an expansion device, and an evaporator. The cooling circuit includes a pump, a control valve, and a heat removing device in fluid communication with the condenser via the coolant. The controller is operatively coupled to the control valve and configured to identify a coolant temperature differential setpoint, monitor a temperature of the coolant provided to the condenser by the cooling circuit, calculate a coolant temperature differential based on the temperature of the coolant provided to the condenser, and operate the control valve to modulate a flow of the coolant through the condenser to drive the coolant temperature differential to the coolant temperature differential setpoint.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25D 17/02 - Dispositions pour la circulation des fluides de refroidissementDispositions pour la circulation de gaz, p. ex. d'air, dans les enceintes refroidies pour la circulation des liquides, p. ex. de la saumure
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
A cooling system includes a distribution system and a cooling unit. The distribution system is configured to circulate a distribution system refrigerant. The distribution system includes a distribution system pump, a main cooler, a distribution system input conduit, and a distribution system output conduit. The main cooler is configured to receive the distribution system refrigerant from the distribution system pump. The distribution system input conduit is configured to receive the distribution system refrigerant from the main cooler. The distribution system output conduit is configured to receive the distribution system refrigerant from the distribution system input conduit and to provide the distribution system refrigerant to the distribution system pump. The cooling unit is configured to circulate a cooling unit refrigerant. The cooling unit includes a cooling unit pump, an upstream receiver, a condenser, a downstream receiver, and an evaporator. The upstream receiver is configured to receive the cooling unit refrigerant.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
86.
COOLING SYSTEM WITH A DISTRIBUTION SYSTEM AND A COOLING UNIT
A cooling system includes a distribution system and a cooling unit. The distribution system is configured to circulate a distribution system refrigerant. The distribution system includes a distribution system pump, a main cooler, a distribution system input conduit, and a distribution system output conduit. The main cooler is configured to receive the distribution system refrigerant from the distribution system pump. The distribution system input conduit is configured to receive the distribution system refrigerant from the main cooler. The distribution system output conduit is configured to receive the distribution system refrigerant from the distribution system input conduit and to provide the distribution system refrigerant to the distribution system pump. The cooling unit is configured to circulate a cooling unit refrigerant. The cooling unit includes a cooling unit pump, an upstream receiver, a condenser, a downstream receiver, and an evaporator. The upstream receiver is configured to receive the cooling unit refrigerant.
F25B 7/00 - Machines, installations ou systèmes à compression fonctionnant en cascade, c.-à-d. avec plusieurs circuits, l'évaporateur d'un circuit refroidissant le condenseur du circuit suivant
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
87.
2 refrigeration system with automated control optimization
A refrigeration system includes a receiver, a gas bypass valve, a parallel compressor, and a controller. The gas bypass valve and the parallel compressor are fluidly coupled to an outlet of the receiver in parallel and configured to control a pressure of a gas refrigerant in the receiver. The controller is configured to switch from operating the gas bypass valve to operating the parallel compressor to control the pressure of the gas refrigerant in the receiver in response to a value of a process variable crossing a switchover setpoint. The value of the process variable depends on an amount of the gas refrigerant produced by the refrigeration system. The controller is configured to automatically adjust the switchover setpoint in response to the amount of the gas refrigerant produced by the refrigeration system being insufficient to sustain operation of the parallel compressor.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
F25B 41/20 - Disposition des soupapes, p. ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
A diagnostics system for a display case includes a display case, a display device, and a remote controller, according to some embodiments. The display case includes a local controller, a refrigeration apparatus, and multiple sensors. The remote controller includes a processing circuit configured to receive diagnostics data from the local controller of the display case, according to some embodiments. The processing circuit is configured to identify one or more events using the diagnostics data and assign a rank to each of the one or more events. The processing circuit is configured to promote the rank of each of the one or more events based on an amount of time that each of the one or more events persists. The processing circuit is configured to operate the display device to notify a user regarding the one or more events and the rank of each event.
A refrigerated display case is provided. The refrigerated display case includes a rear wall has a first end, a second end disposed opposite the first end and a plurality of markings disposed between the first end and the second end. A mounting rail is coupled to the rear wall. A shelf is adjustably coupleable to the mounting rail at a plurality of positions between the first end and the second end of the rear wall. The plurality of markings are configured to indicate a distance from the first end of the rear wall to the shelf based on alignment of the shelf with at least one of the plurality of markings.
A47B 57/34 - Meubles à tiroirs, étagères ou rayonnages caractérisés par la possibilité de régler les rayons ou les cloisons comprenant des moyens pour régler la hauteur des supports de rayons amovibles consistant en rebords, montants ou pieds-droits à rainures ou à encoches les parties rainurées ou encochées constituant les pieds-droits ou les montants eux-mêmes
A47B 57/42 - Meubles à tiroirs, étagères ou rayonnages caractérisés par la possibilité de régler les rayons ou les cloisons comprenant des moyens pour régler la hauteur des supports de rayons amovibles consistant en crochets s'engageant dans des ouvertures les supports de rayons étant en porte-à-faux
90.
REFRIGERATED DISPLAY CASE WITH SHELF INDEXING SYSTEM
A refrigerated display case is provided. The refrigerated display case includes a rear wall has a first end, a second end disposed opposite the first end and a plurality of markings disposed between the first end and the second end. A mounting rail is coupled to the rear wall. A shelf is adjustably coupleable to the mounting rail at a plurality of positions between the first end and the second end of the rear wall. The plurality of markings are configured to indicate a distance from the first end of the rear wall to the shelf based on alignment of the shelf with at least one of the plurality of markings.
A diagnostics system for a display case includes a display case, a display device, and a remote controller, according to some embodiments. The display case includes a local controller, a refrigeration apparatus, and multiple sensors. The remote controller includes a processing circuit configured to receive diagnostics data from the local controller of the display case, according to some embodiments. The processing circuit is configured to identify one or more events using the diagnostics data and assign a rank to each of the one or more events. The processing circuit is configured to promote the rank of each of the one or more events based on an amount of time that each of the one or more events persists. The processing circuit is configured to operate the display device to notify a user regarding the one or more events and the rank of each event.
An evaporative cooling device for a refrigeration system includes one or more heat exchanger coils, a first moisture panel, a second moisture panel, a first nozzle array, a second nozzle array, a moisture sensor, and a controller. The first moisture panel and the second moisture panel are separated by a distance and disposed external to the one or more heat exchanger coils. The first nozzle array is disposed external to the first moisture panel and the second nozzle array is disposed external to the second moisture panel. The first nozzle array and the second nozzle array are configured to provide an atomized spray of electrostatically charged droplets. The moisture sensor is configured to provide a signal representative of a moisture level. The controller is configured to receive the signal representative of the moisture level and control a supply of water.
F24F 1/42 - Éléments extérieurs séparés, p. ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur caractérisés par l'emploi d'un condensat, p. ex. pour un refroidissement amélioré
93.
Refrigeration system with adiabatic electrostatic cooling device
An evaporative cooling device for a refrigeration system includes one or more heat exchanger coils, a first moisture panel, a second moisture panel, a first nozzle array, a second nozzle array, a moisture sensor, and a controller. The first moisture panel and the second moisture panel are separated by a distance and disposed external to the one or more heat exchanger coils. The first nozzle array is disposed external to the first moisture panel and the second nozzle array is disposed external to the second moisture panel. The first nozzle array and the second nozzle array are configured to provide an atomized spray of electrostatically charged droplets. The moisture sensor is configured to provide a signal representative of a moisture level. The controller is configured to receive the signal representative of the moisture level and control a supply of water.
2 refrigeration system. The controller is configured to receive a pressure measurement from the pressure sensor and operate both the gas bypass valve and the parallel compressor, in response to the pressure measurement, to control the pressure within the receiving tank.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 9/00 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé
F25B 40/00 - Sous-refroidisseurs, désurchauffeurs ou surchauffeurs
F25B 5/02 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p. ex. pour faire varier la puissance frigorifique disposés en parallèle
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
95.
Valve and capillary tube system for refrigeration systems
A refrigeration system includes an evaporator, a condenser, a compressor, a capillary tube, and an expansion device. The compressor is configured to circulate a refrigerant between the evaporator and the condenser. The capillary tube is configured to receive the refrigerant from the condenser. The expansion device is configured to receive the refrigerant from the capillary tube and provide the refrigerant to the evaporator. The expansion device is adjustable to control a flow of the refrigerant through the capillary tube.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F25B 41/39 - Dispositions avec plusieurs moyens de détente disposés en série, c.-à-d. détente à plusieurs étages, sur une ligne de réfrigérant menant au même évaporateur
F25B 41/385 - Dispositions avec plusieurs moyens de détente disposés en parallèle sur une conduite de réfrigérant menant au même évaporateur
F25B 41/34 - Soupapes de détente l’organe de soupape étant actionné par des moyens électriques, p. ex. par des actionneurs piézo-électriques
96.
REFRIGERATION SYSTEM WITH ADIABATIC ELECTROSTATIC COOLING DEVICE
An evaporative cooling device for a refrigeration system includes one or more heat exchanger coils, a first moisture panel, a second moisture panel, a first nozzle array, a second nozzle array, a moisture sensor, and a controller. The first moisture panel and the second moisture panel are separated by a distance and disposed external to the one or more heat exchanger coils. The first nozzle array is disposed external to the first moisture panel and the second nozzle array is disposed external to the second moisture panel. The first nozzle array and the second nozzle array are configured to provide an atomized spray of electrostatically charged droplets. The moisture sensor is configured to provide a signal representative of a moisture level. The controller is configured to receive the signal representative of the moisture level and control a supply of water.
F24F 1/42 - Éléments extérieurs séparés, p. ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur caractérisés par l'emploi d'un condensat, p. ex. pour un refroidissement amélioré
A freezer case includes a refrigeration system and a controller. The controller is configured to store a plurality of setpoint instruction sets associated with a plurality of possible operating modes, select a current operating mode from the plurality of possible operating modes, assign a value for the superheat setpoint by executing the setpoint instruction set associated with the current operating mode, control the refrigeration system in accordance with the superheat setpoint.
A refrigerated display case having a housing defining a temperature controlled space and a refrigeration system coupled to the housing is provided. The refrigeration system is configured to be operable to affect a temperature of the temperature controlled space. The refrigeration system includes an actuator, a controller, and a sensor. The controller is configured to continuously update a stored position of the actuator based on measurement of an electric current provided to the actuator, retrieve the stored position after a power failure, and restart control based on the stored position of the actuator. The sensor is configured to communicate with the controller.
A method of detecting electrical failure in a refrigeration system is provided. The method includes determining whether a present superheat of the refrigeration system is between a maximum superheat and a minimum superheat for the refrigeration system, the maximum superheat and the minimum superheat defining a normal operating range. The method also includes detecting an electrical property of an expansion valve assembly of the refrigeration system responsive to the superheat being outside the normal operating range. The method further includes determining whether the expansion valve assembly as experienced an electrical failure based on at least the electrical property. A signal indicating that the expansion valve has experienced an electrical failure is generated based on a determination that the expansion valve assembly has experienced the electrical failure.
A refrigeration system includes an evaporator configured to receive a flow of refrigerant and transfer heat into the refrigerant within the evaporator to provide cooling for a temperature-controlled space, an expansion valve operable to modulate the flow of refrigerant into the evaporator, a liquid level sensor configured to measure a level of liquid accumulated within a component of the refrigeration system, and a controller configured to operate the expansion valve to increase the flow of refrigerant into the evaporator or decrease the flow of refrigerant into the evaporator based on the level of liquid measured by the liquid level sensor.
