An adiabatic cooling system includes a condenser coil and at least one mist chamber positioned around the condenser coil such that at least a portion of intake air for the adiabatic cooling system passes through the mist chamber prior to contacting the condenser coil. The at least one mist chamber includes a first cooling pad with a first intake-side face and a first output-side face and a second cooling pad with a first intake-side face and a first output-side face. The second-intake side face of the second cooling pad faces the first output-side face of the first cooling pad and is separated from the first-output side face of the first cooling pad by a gap. At least one nozzle is configured, when the adiabatic system is operating in a wet mode, to provide a mist of water into the gap.
F28C 1/14 - Réfrigérants à ruissellement à contact direct, p.ex. tours de réfrigération comprenant également un échange de chaleur sans contact direct
F28C 3/08 - Autres appareils échangeurs de chaleur à contact direct les sources de potentiel calorifique étant un liquide et un gaz ou une vapeur avec changement d'état, p.ex. absorption, évaporation, condensation
2.
HOT GAS DEFROST USING DEDICATION LOW TEMPERATURE COMPRESSOR DISCHARGE
A refrigeration system includes a dedicated defrost-mode compressor that delivers high pressure, high temperature refrigerant to one or more evaporators to defrost the evaporators.
A refrigeration system includes an expansion valve downstream of one or more medium temperature compressors. The expansion valve is configured to decrease pressure of a portion of refrigerant output by the one or more medium temperature compressors. When defrost operation of an evaporator is indicated, the refrigerant with decreased pressure from the expansion valve is provided to the evaporator for at least a period of time sufficient to defrost the evaporator.
An adiabatic cooling system includes a condenser coil and one or more adiabatic pads positioned such that intake air for the adiabatic cooling system passes through the pads prior to contacting the condenser coil. The adiabatic cooling system includes a vibration device attached to each adiabatic pad. A controller is communicatively coupled to the vibration device for each of the adiabatic pads. The controller determines that cleaning of the adiabatic pads is needed. In response to detecting cleaning is needed, the controller causes the vibration device attached to each adiabatic pad to vibrate, thereby causing debris in the one or more adiabatic pads to become loosened and/or removed from the adiabatic pads.
F28F 27/00 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur
F28C 1/14 - Réfrigérants à ruissellement à contact direct, p.ex. tours de réfrigération comprenant également un échange de chaleur sans contact direct
F28F 25/00 - PARTIES CONSTITUTIVES OU AMÉNAGEMENTS, D'APPLICATION GÉNÉRALE, DES DISPOSITIFS ÉCHANGEURS DE CHALEUR OU DE TRANSFERT DE CHALEUR - Parties constitutives des réfrigérateurs à ruissellement
An HVAC system includes a unit cooler, which includes a first evaporator coil, a second evaporator coil, and a blower. The HVAC system further includes a first sensor, a second sensor, a first valve, a second valve, and a controller. The controller actuates the blower to direct air to flow over the first evaporator coil and the second evaporator coil, receives measurements from the first sensor and the second sensor, initiates a defrost cycle for the first evaporator coil by transmitting instructions to close the first valve to prevent the flow of refrigerant into the first evaporator coil, transmits instructions to open the first valve when the defrost cycle for the first evaporator coil has terminated, and initiates a defrost cycle for the second evaporator coil by transmitting instructions to close the second valve to prevent the flow of refrigerant into the second evaporator coil.
F24F 11/43 - Dégivrage; Prévention du gel des éléments intérieurs
F25B 41/24 - Disposition de soupapes d'arrêt pour déconnecter une partie du cycle du réfrigérant, p.ex. une partie extérieure
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
An adiabatic cooling system includes a condenser coil, a plurality of adiabatic pads, a plurality of frames, and a pad pivoting system. Each frame is configured to hold a respective one of the plurality of adiabatic pads and to pivot about a respective one of a plurality of pivot points. The pad pivoting system is configured to rotate each one of the plurality of frames about the respective pivot point of the frame from an open position to a closed position, and to rotate each one of the plurality of frames about the respective pivot point of the frame from the closed position to the open position. When the plurality of frames are in the open position, intake air for the adiabatic cooling system is unimpeded by the plurality of adiabatic pads as the intake air enters the adiabatic cooling system and contacts the condenser coil.
F28B 9/00 - Systèmes auxiliaires, aménagements ou dispositifs accessoires
F28C 1/14 - Réfrigérants à ruissellement à contact direct, p.ex. tours de réfrigération comprenant également un échange de chaleur sans contact direct
F28F 25/08 - Planches ou grilles d'éclaboussement, p.ex. pour convertir la pulvérisation de liquides en films de liquides; Eléments ou couches pour accroître l'aire de la surface de contact
F28F 27/00 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur
7.
COOLING SYSTEM WITH FLEXIBLE EVAPORATING TEMPERATURE
A cooling system implements various processes to improve efficiency in high ambient temperatures. First, the system can flood one or more low side heat exchangers in the system. Second, the system can direct a portion of vapor refrigerant from a low side heat exchanger to a flash tank rather than to a compressor. Third, the system can transfer heat from refrigerant at a compressor suction to refrigerant at the discharge of a high side heat exchanger.
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
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 9/08 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant des éjecteurs
A cooling system drains oil from low side heat exchangers to vessels and then uses compressed refrigerant to push the oil in the vessels back towards a compressor. Generally, the cooling system operates in three different modes of operation: a normal mode, an oil drain mode, and an oil return mode. During the normal mode, a primary refrigerant is cycled to cool one or more secondary refrigerants. As the primary refrigerant is cycled, oil from a compressor may mix with the primary refrigerant and become stuck in a low side heat exchanger. During the oil drain mode, the oil in the low side heat exchanger is allowed to drain into a vessel. During the oil return mode, compressed refrigerant is directed to the vessel to push the oil in the vessel back towards a compressor.
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
A cooling system drains oil from low side heat exchangers to vessels and then uses compressed refrigerant to push the oil in the vessels back towards a compressor. Generally, the cooling system operates in three different modes of operation: a normal mode, an oil drain mode, and an oil return mode. During the normal mode, a primary refrigerant is cycled to cool one or more secondary refrigerants. As the primary refrigerant is cycled, oil from a compressor may mix with the primary refrigerant and become stuck in a low side heat exchanger. During the oil drain mode, the oil in the low side heat exchanger is allowed to drain into a vessel. During the oil return mode, compressed refrigerant is directed to the vessel to push the oil in the vessel back towards a compressor.
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
A cooling system drains oil from low side heat exchangers to vessels and then uses compressed refrigerant to push the oil in the vessels back towards a compressor. Generally, the cooling system operates in three different modes of operation: a normal mode, an oil drain mode, and an oil return mode. During the normal mode, a primary refrigerant is cycled to cool one or more secondary refrigerants. As the primary refrigerant is cycled, oil from a compressor may mix with the primary refrigerant and become stuck in a low side heat exchanger. During the oil drain mode, the oil in the low side heat exchanger is allowed to drain into a vessel. During the oil return mode, compressed refrigerant is directed to the vessel to push the oil in the vessel back towards a compressor.
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
A cooling system uses P-traps to address the oil return issues that result from a vertical separation between the compressor and the high side heat exchanger. Generally, the vertical piping that carries the refrigerant from the compressor to the high side heat exchanger includes P-traps installed at various heights to capture oil in the refrigerant and to prevent that oil from flowing back to the compressor. T- connections are coupled to the P-traps to allow the oil to drain out of the P- traps. The oil may then be collected and returned to the compressor.
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 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
A cooling system uses P-traps to address the oil return issues that result from a vertical separation between the compressor and the high side heat exchanger. Generally, the vertical piping that carries the refrigerant from the compressor to the high side heat exchanger includes P-traps installed at various heights to capture oil in the refrigerant and to prevent that oil from flowing back to the compressor. As oil collects in the P-traps, the refrigerant begins to push the oil upwards until the oil reaches the high side heat exchanger. Multiple piping of different sizes may be used depending on a discharge pressure of the compressor. When the discharge pressure is higher, a larger piping may be used direct the oil and refrigerant to the high side heat exchanger.
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 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
13.
COOLING SYSTEM WITH FLOODED LOW SIDE HEAT EXCHANGERS
ABSTRACT A cooling system partially floods the low temperature low side heat exchangers (e.g., freezers) in the system. An accumulator is positioned between the low temperature low side heat exchangers and the low temperature compressor. The accumulator collects the refrigerant (both liquid and vapor) from the flooded low temperature low side heat exchangers. Refrigerant discharged by the low temperature compressor is fed through the accumulator so that heat can be transferred to the refrigerant collected in the accumulator. As a result, the temperature of the refrigerant discharged by the low temperature compressor drops before that refrigerant reaches the medium temperature compressor. Date Recue/Date Received 2021-01-14
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
F25B 41/24 - Disposition de soupapes d'arrêt pour déconnecter une partie du cycle du réfrigérant, p.ex. une partie extérieure
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 6/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs
ABSTRACT OF THE DISCLOSURE An unconventional oil separator includes a vertical design. Generally, a refrigerant enters the vertical oil separator and spins downwards. The oil separator includes plates within the oil separator that either maintain the spin of the refrigerant or reverse the spin of the refrigerant, which causes oil in the refrigerant to separate from the refrigerant. A vertical outlet allows refrigerant that spins towards the bottom of the oil separator to travel back towards the top and out of the oil separator. Separated oil is collected at the bottom of the oil separator. Date Recue/Date Received 2021-01-08
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
ABSTRACT A cooling system is designed to operate in two different modes. Generally, in the first mode, when parallel compression is needed, certain valves are controlled to direct gaseous refrigerant from a tank to a compressor in the system and to direct refrigerant from low side heat exchangers towards other compressors. In this manner, a compressor in the system is transitioned to be generally a parallel compressor. In the second mode, when parallel compression is not needed, the valves are controlled to return the refrigerant flow back to normal. Date Recue/Date Received 2020-12-30
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
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
16.
COOLING SYSTEM WITH PARTLY FLOODED LOW SIDE HEAT EXCHANGER
ABSTRACT A cooling system is provided that partially floods one of its freezers (e.g., the ice cream freezer) such that the refrigerant discharged by the freezer includes a liquid component. In this manner, the freezers in the system can operate at the same saturated suction temperature. A heat exchanger can be used to transfer heat to the liquid component of the discharge to evaporate the liquid component. Date Recue/Date Received 2020-12-10
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 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
ABSTRACT A cooling system is designed to generally allow for one or more compressors to be bypassed when ambient temperatures are low. The system includes a bypass line and valve that opens when ambient temperatures are low and/or when the pressure of the refrigerant in the system is low. In this manner, the refrigerant can flow through the bypass line instead of through one or more compressors. These compressors may then be shut off. To supply any needed pressure to cycle the refrigerant, the system may include a pump that turns on when the bypass line is open. When ambient temperatures are extremely low, thermosiphon may be used to cycle the refrigerant. Date Recue/Date Received 2020-12-10
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
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 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
An apparatus includes a flash tank that stores a refrigerant, a first load that uses the refrigerant to cool a first space, second and third loads, first and second compressors, and a valve. During a first mode of operation: the second load uses the refrigerant to cool a second space, the third load uses the refrigerant to cool a third space, the second compressor compresses the refrigerant from the second and third loads, and the first compressor compresses the refrigerant from the first load and the second compressor. During a second mode of operation: the second compressor compresses the refrigerant from the second load and directs the compressed refrigerant to the third load to defrost the third load and the valve prevents the refrigerant at the third load from flowing to the flash tank until a pressure of the refrigerant at the third load exceeds a threshold.
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 1/00 - Machines, installations ou systèmes à compression à cycle irréversible
19.
INTEGRATED COOLING SYSTEM WITH FLOODED AIR CONDITIONING HEAT EXCHANGER
An integrated system floods an air conditioning low side heat exchanger such that the air conditioning low side heat exchanger does not evaporate all the liquid refrigerant entering the air conditioning low side heat exchanger. As a result, both liquid and vapor refrigerant leave the air conditioning low side heat exchanger. The system includes an additional receiver that stores the refrigerant leaving the air conditioning low side heat exchanger. To prevent the liquid refrigerant in the receiver from overflowing, the liquid refrigerant in the receiver is used in a refrigeration system when the level of liquid refrigerant in the receiver exceeds a threshold (e.g., as detected by a sensor in the receiver).
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 cooling system includes a second receiver that receives refrigerant from a low side heat exchanger. A pipe connects the second receiver to a first receiver. A vapor portion of the refrigerant in the first receiver can flow through the pipe to the second receiver. A compressor is used to create a pressure differential in the second receiver relative to the first receiver such that the pressure in the first receiver is greater than the pressure in the second receiver. This pressure differential effectively acts as a pump that pushes the liquid refrigerant in the first receiver towards the low side heat exchanger.
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
21.
METHOD AND SYSTEM TO VARY SUCTION TEMPERATURE TO POSTPONE FROST FORMATION
A cooling system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil. A circulation fan is arranged to direct air through the evaporator coil and through a discharge air duct into a conditioned space. At least one sensor is disposed in at least one of the discharge air duct, the conditioned space, and the evaporator coil. An HVAC controller is electrically coupled to the at least one sensor and electrically coupled to the compressor. The HVAC controller is configured to receive a measurement of an HVAC parameter from the at least one sensor, determine if the HVAC parameter indicates frost formation on the evaporator coil, and, responsive to a determination that the HVAC parameter indicates frost formation on the evaporator coil, raise a saturated suction temperature of the evaporator coil.
An apparatus includes a high side heat exchanger, a heat exchanger, a flash tank, a first expansion valve, a second expansion valve, a load, a first compressor, and a second compressor. During a first mode of operation, the second expansion valve directs refrigerant from the flash tank to the load. The refrigerant from the load bypasses the first compressor. The heat exchanger transfers heat from the refrigerant from the high side heat exchanger to the refrigerant from the load. The second compressor compresses the refrigerant from the heat exchanger. During a second mode of operation, the first expansion valve directs refrigerant from the flash tank to the load. The first compressor compresses the refrigerant from the load and the second compressor compresses the refrigerant from the first compressor before the refrigerant from the first compressor reaches the high side heat exchanger.
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
An apparatus includes a high side heat exchanger, a flash tank, a load, a compressor, and a heat exchanger. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger and to discharge a flash gas. The load uses the refrigerant from the cool a space proximate the load. The compressor compresses the refrigerant from the load. The heat exchanger transfers heat from the refrigerant from the compressor to the flash gas before the refrigerant from the compressor reaches the high side heat exchanger. The heat exchanger directs the flash gas to the compressor after heat from the refrigerant from the compressor is transferred to the flash gas and directs the refrigerant from the compressor to the high side heat exchanger after heat from the refrigerant from the compressor is transferred to the flash gas.
According to certain embodiments, a method comprises determining a liquid outlet temperature setpoint for refrigerant discharged from a liquid outlet of a subcooler. The liquid outlet corresponds to a hot-side path of the subcooler that receives refrigerant directly from a tank, cools the refrigerant by an exchange of heat with a cold-side path of the subcooler that receives the refrigerant from the tank via an inlet expansion valve, and discharges the refrigerant to an evaporator via an outlet expansion valve. The method further comprises determining a superheat setpoint for the refrigerant discharged to a compressor via a vapor outlet of the cold-side path. The superheat setpoint is determined based on the liquid outlet temperature setpoint. The method further comprises adjusting a temperature of the refrigerant discharged to the compressor based on the superheat setpoint.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F24F 11/62 - Aménagements de commande ou de sécurité caractérisés par le type de commande ou par le traitement interne, p.ex. utilisant la logique floue, la commande adaptative ou l'estimation de valeurs
An apparatus includes a suction header, a drain leg, an oil separator, and an oil reservoir. The suction header is configured to receive a refrigerant and the drain leg is coupled to the suction header. The oil separator is configured to separate an oil from the refrigerant from a compressor. During a first mode of operation, the drain leg is configured to collect an oil from the refrigerant from a compressor at the suction header. During a second mode of operation, the oil separator is configured to direct the oil separated from the refrigerant from the compressor through the drain leg and to the oil reservoir.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
An apparatus includes a first expander, a flash tank, a first load, a first work recovery compressor, a valve, and a first compressor. The first expander expands a refrigerant. The flash tank stores a refrigerant from the expander. The first load uses the refrigerant from the flash tank to cool a space proximate the first load. The work recovery compressor compresses the refrigerant from the first load and is driven by the first expander. The valve reduces the pressure of the refrigerant from the work recovery compressor below a threshold. The first compressor compresses the refrigerant from the valve.
F25B 11/02 - Machines, installations ou systèmes à compression utilisant des turbines, p.ex. des turbines à gaz comme détendeurs
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 9/06 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant des détendeurs
An apparatus includes an ejector, a first load, a second load, a third load, a first compressor, a second compressor, and an accumulator. The ejector directs a refrigerant to a flash tank that stores the refrigerant. The loads use the refrigerant from the flash tank to cool spaces. The first compressor compresses the refrigerant from the first load. During a defrost cycle, the first compressor directs the refrigerant to the third load to defrost the third load, the accumulator separates the refrigerant that defrosted the third load into a second liquid portion and a second vapor portion, the ejector directs the second liquid portion to the flash tank, and the second compressor compresses the second vapor portion.
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
An apparatus includes a high side heat exchanger, a flash tank, a first load, a first oil separator, and a first compressor. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant. The first load uses the refrigerant to cool a first space proximate the first load. During a first mode of operation, the first oil separator separates an oil from the refrigerant from the first load and directs the refrigerant to an ejector. The ejector directs the refrigerant from the high side heat exchanger and the refrigerant form the first oil separator to the flash tank. The flash tank directs the refrigerant from the first oil separator to the first compressor. The first compressor compresses the refrigerant from the flash tank. During a second mode of operation, the first oil separator directs the oil separated from the refrigerant to the first compressor.
F25B 43/02 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur pour la séparation des lubrifiants du frigorigène
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 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
In one embodiment, an apparatus includes an insert for an evaporator coil. The insert is located within the evaporator coil. The insert for the evaporator coil reduces refrigerant charge in the evaporator coil and causes refrigerant flowing through the evaporator coil to change direction. The insert for the evaporator coil includes a solid core and a plurality of support legs.
F24F 13/30 - Agencement ou montage d'échangeurs de chaleur
F28F 1/40 - Eléments tubulaires ou leurs ensembles avec moyens pour augmenter la surface de transfert de chaleur, p.ex. avec des ailettes, avec des saillies, avec des évidements les moyens étant uniquement à l'intérieur de l'élément tubulaire
F28F 13/08 - Dispositions pour modifier le transfert de chaleur, p.ex. accroissement, diminution en affectant le mode d'écoulement des sources de potentiel calorifique en faisant varier la section transversale des canaux d'écoulement
An apparatus includes a high side heat exchanger, a subcooler heat exchanger, a flash tank, a load, and a compressor. The high side heat exchanger removes heat from a refrigerant. The subcooler heat exchanger receives the refrigerant. The flash tank stores the refrigerant. During a first mode of operation, the load uses the refrigerant to cool a space proximate the load and the compressor compresses the refrigerant. During a second mode of operation, the subcooler heat exchanger receives the refrigerant from the flash tank, transfers heat from the refrigerant from the high side heat exchanger to the refrigerant from the flash tank and directs the refrigerant from the flash tank to the compressor. During the second mode of operation, the compressor compresses the refrigerant from the subcooler heat exchanger and directs the compressed refrigerant to the load to defrost the load.
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
An apparatus includes a high side heat exchanger, a flash tank, a subcooler, an expansion valve, a load, and a compressor. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant. The subcooler heat exchanger receives the refrigerant. During a first mode of operation, the load uses the refrigerant to cool a space proximate the load and the compressor compresses the refrigerant. During a second mode of operation, the subcooler heat exchanger directs the refrigerant to the expansion valve, transfers heat from the refrigerant from the flash tank to the refrigerant from the expansion valve and directs the refrigerant from the expansion valve to the compressor. During the second mode of operation, the compressor compresses the refrigerant from the subcooler heat exchanger and directs the compressed refrigerant from the subcooler heat exchanger to the load to defrost the first load.
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
An apparatus includes a high side heat exchanger, a load, a compressor, a belt, a first bin, a second bin, and a controller. The high side heat exchanger removes heat from a refrigerant. The load uses the refrigerant to cool an enclosed space. The compressor compresses the refrigerant. The first and second bins are coupled to the belt and positioned within the enclosed space. The controller receives a first message, determines that the first bin should be selected, and cycles the belt to move the first bin to a retrieval location within the enclosed space. The controller also receives a second message, determines that the second bin should be selected, and cycles the belt to move the second bin to the retrieval location.
A47F 3/08 - Vitrines ou meubles d'exposition avec dispositions pour agiter ou déplacer les produits de façon continue ou intermittente
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
B65G 1/12 - Dispositifs d'emmagasinage mécaniques avec supports ou porte-objets mobiles en circuit fermé pour faciliter l'insertion ou l'enlèvement des objets
B65G 1/137 - Dispositifs d'emmagasinage mécaniques avec des aménagements ou des moyens de commande automatique pour choisir les objets qui doivent être enlevés
F25D 13/06 - Dispositifs fixes associés à des machines frigorifiques, p.ex. chambres froides avec transporteurs faisant traverser la chambre de refroidissement aux produits à refroidir
A system includes a flash tank, a first load, a second load, a first compressor, a second compressor, a first valve, and a second valve. The flash tank stores a refrigerant. The first and second loads use the refrigerant to cool first and second spaces. The first compressor compresses the refrigerant from the first load during a first mode of operation and a flash gas from the flash tank during a second mode of operation. The second compressor compresses a mixture of the refrigerant from the first and second loads during the first mode of operation. The first valve directs the flash gas from the flash tank to the first compressor during the second mode of operation. The second valve directs the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load.
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
An apparatus includes a flash tank, a medium temperature load, a low temperature load, a first compressor, a second compressor, and an ejector. The flash tank stores a refrigerant. The medium temperature load uses the refrigerant from the flash tank to cool a space proximate the medium temperature load to a first temperature. The low temperature load uses the refrigerant from the flash tank to cool a space proximate the low temperature load to a second temperature that is lower than the first temperature. The first compressor compresses the refrigerant from the low temperature load. The second compressor compresses the refrigerant from the medium temperature load. The ejector directs a mixture of the refrigerant from the first compressor and the refrigerant from the second compressor to the low temperature load during a defrost cycle. The mixture defrosts the low temperature load. The flash tank receives the mixture.
An apparatus includes a flash tank, a load, a first compressor, a coil, a first pipe, and a second compressor. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to cool a space proximate the load. The first compressor compresses the refrigerant from the load. The coil within the flash tank receives the refrigerant from the first compressor such that the received refrigerant is within the coil. The refrigerant stored within the flash tank cools the refrigerant within the coil. The first pipe is within the flash tank. The first pipe directs the refrigerant from within the coil out of the flash tank. The second compressor compresses the refrigerant directed out of the flash tank.
F25B 40/00 - Sous-refroidisseurs, désurchauffeurs ou surchauffeurs
F25B 1/10 - Machines, installations ou systèmes à compression à cycle irréversible à compression multi-étagée
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
An apparatus includes a flash tank, a first load, a second load, a first compressor, a second compressor, and an expansion valve. The flash tank stores a refrigerant. The first load uses the refrigerant from the flash tank to cool a space proximate the first load. The second load uses the refrigerant from the flash tank to cool a space proximate the second load. The first compressor compresses the refrigerant from the second load. The second compressor compresses a mixture of the refrigerant from the first load and the refrigerant from the first compressor. The expansion valve controls a flow of the refrigerant from the flash tank to the first load such that the flow of refrigerant to the first load is increased when a temperature of the mixture exceeds a threshold.
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 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
In an embodiment, a fan mounting assembly for use in refrigeration system includes a mounting body having a first side and a second side with a fan opening. The mounting body includes a collar extending from the second side of the mounting body around the fan opening, a flange extending outboard of the collar, and a plurality of retainers extending from the second side of the mounting body outward from the fan opening. Each retainer has a fastener opening extending therethrough. The fan mounting assembly further includes a motor mount and guard that includes a plurality of rings and a plurality of legs extending radially from a center portion. Each leg has a proximal end with a proximal eyelet formed thereon and a distal end with a distal eyelet formed thereon. The distal eyelet is configured to align with the fastener opening of a corresponding retainer.
F24F 1/38 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur - Parties constitutives des ventilateurs des éléments extérieurs, p.ex. orifices d'admission évasés ou supports des ventilateurs
An apparatus includes a heat exchanger, a load, a compressor, and a valve. The heat exchanger receives a refrigerant at a first inlet and directs the refrigerant received at the first inlet to an outlet. The load uses the refrigerant from the outlet to remove heat from a space proximate the load. The compressor compresses the refrigerant from the load. The valve directs the refrigerant from the compressor to a second inlet of the heat exchanger when a temperature of the refrigerant at the load is below a first threshold. The heat exchanger transfers heat from the refrigerant received at the second inlet to the refrigerant received at the first inlet.
An apparatus includes a high side heat exchanger, a flash tank, a first load, a first compressor, an auxiliary cooling system, and a first check valve. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger. The first load uses the refrigerant to remove heat from a space proximate the first load. The first compressor compresses the refrigerant from the first load. The auxiliary cooling system removes heat from the refrigerant stored in the flash tank during a power outage. The first check valve directs the refrigerant between the first load and the first compressor back to the flash tank when the pressure of the refrigerant between the first load and the first compressor exceeds a threshold during the power outage.
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
An apparatus includes a flash tank, a load, a first compressor, a heat exchanger, and a second compressor. The flash tank stores a refrigerant and releases the refrigerant as a flash gas. The load uses the refrigerant to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load and directs the refrigerant to the flash tank. The heat exchanger transfers heat from the refrigerant from a high side heat exchanger to the refrigerant released from the flash tank as the flash gas. The second compressor compresses the refrigerant released from the flash tank as the flash gas.
F25B 6/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs
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 system includes a heat exchanger coupled to an air conditioning system, and a flash tank is coupled to refrigeration cases, and houses a first refrigerant. The system includes solenoid valves coupled to the flash tank, where the solenoid valves reduce a pressure of the first refrigerant flowing from the flash tank to the heat exchanger. The heat exchanger may be coupled to the solenoid valves, and the heat exchanger may be configured to receive an amount of the first refrigerant from the solenoid valves, receive a second refrigerant from the air conditioning system, where the second refrigerant is associated with an air conditioning load, and provide cooling to the second refrigerant, using the first refrigerant. Finally, the system includes a check valve coupled to the flash tank, where the check valve reduces a pressure of the first refrigerant flowing from the flash tank away from the solenoid valves.
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
F24F 13/30 - Agencement ou montage d'échangeurs de chaleur
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
A system includes a high side heat exchanger, a flash tank, a first load, a second load, a first compressor, and a heat exchanger. The flash tank is configured to store the refrigerant from the high side heat exchanger. The first load is configured to use the refrigerant from the flash tank to remove heat from a first space proximate to the first load. The second load is configured to use the refrigerant from the flash tank to remove heat from a second space proximate to the second load. The first compressor is configured to compress the refrigerant from the first load. The heat exchanger is configured to transfer heat from the refrigerant from the first compressor and the second load to the refrigerant from the high side heat exchanger, and direct the refrigerant from the first compressor and the second load to a second compressor.
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 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
An apparatus includes a separator tank, a heat exchanger, a compressor-less heat separator, and a fluid cooler. The separator tank separates a first refrigerant into a vapor component and a liquid component. The heat exchanger is exposed to a load. The heat exchanger uses the liquid component of the first refrigerant to remove heat from a space proximate the load. The space includes at least one of a refrigeration unit and walk-in cooler or freezer. The compressor-less heat separator extracts heat from the vapor component of the first refrigerant and uses electrical power to move the heat to a second refrigerant. The fluid cooler removes heat from the second refrigerant.
F25B 23/00 - Machines, installations ou systèmes ayant un seul principe de fonctionnement non compris dans les groupes , p.ex. utilisant l'effet de radiation sélective
F25B 19/00 - Machines, installations ou systèmes utilisant l'évaporation d'un frigorigène mais sans récupération de vapeur
F01P 3/22 - Refroidissement par liquide caractérisé par des températures de l'agent de refroidissement supérieures au point d'ébullition atmosphérique normal
44.
THERMAL STORAGE OF CARBON DIOXIDE SYSTEM FOR POWER OUTAGE
A system includes a high side heat exchanger, a flash tank, a first load, a second load, and a thermal storage tank. The high side heat exchanger is configured to remove heat from a refrigerant. The flash tank is configured to store the refrigerant from the high side heat exchanger and discharge a flash gas. The first load is configured to use the refrigerant from the flash tank to remove heat from a first space proximate to the first load. The second load is configured to use the refrigerant from the flash tank to remove heat from a second space proximate to the second load. The thermal storage tank is configured, when a power outage is determined to be occurring, to receive the flash gas from the flash tank, and remove heat from the flash gas.
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
F25B 45/00 - Dispositions pour l'introduction ou l'évacuation du frigorigène
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F28D 20/00 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en général; Appareils échangeurs de chaleur de régénération non couverts par les groupes ou
A flood prevention system includes a first load, a second load, a third load, a fourth load, a first compressor, a first temperature sensor, a second temperature sensor, and a controller. The first, second, third, and fourth loads are configured to use a refrigerant to remove heat from a first, second, third, and fourth space, respectively, proximate to the first, second, third, and fourth load, respectively. The first compressor is configured to compress the refrigerant from the fourth load. The first temperature sensor is configured to detect a first temperature of the refrigerant from the first load, the second load, and the third load. The second temperature sensor is configured to detect a second temperature of the refrigerant from the first load, the second load, the third load, and the compressor. The controller is configured to trigger an alarm in response to certain conditions.
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 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
46.
REFRIGERATION SYSTEM USING EMERGENCY ELECTRIC POWER
In certain embodiments, a refrigeration system comprises an emergency electric power supply configured to supply power to at least one motor drive of the system. The system further comprises a power switch coupled to the emergency electric power supply, a tank configured to store a refrigerant, a first compressor configured to compress the refrigerant of the tank, and a controller coupled to the power switch and the first compressor. The controller may receive an indication from the power switch that the system is using the emergency electric power supply, and in response to receiving the indication from the power switch that the system is using the emergency electric power supply, operate the system in a first power outage mode. The controller may determine an amount of power to supply to the first compressor based on the first power outage mode and transmit a signal to instruct the first compressor to turn on.
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
H02J 9/00 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours
A method by a controller of a cooling system includes calculating a difference between a first temperature of ambient air and a second temperature of pre-cooled air. The pre-cooled air is ambient air that has been cooled by water from a water distribution system before it enters one or more condenser coils. The method further includes determining that the difference between the first and second temperatures is less than or equal to a predetermined temperature difference, and in response, determining that the first temperature is greater than or equal to a minimum temperature. The method further includes, if the first temperature is greater than or equal to the minimum temperature, instructing the water distribution system to distribute the water to pre-cool the ambient air for a predetermined length of time and to disable the distribution of the water after the predetermined amount of time has elapsed.
F28F 27/00 - Commandes ou dispositifs de sécurité spécialement adaptés pour les appareils d'échange ou de transfert de chaleur
F24F 1/14 - Climatiseurs individuels pour le conditionnement de l'air, p.ex. éléments séparés ou monoblocs ou éléments recevant l'air primaire d'une station centrale Éléments extérieurs séparés, p.ex. élément extérieur à relier à un élément intérieur séparé comprenant un compresseur et un échangeur de chaleur Échangeurs de chaleur spécialement adaptés à des éléments extérieurs séparés
F24F 11/87 - Aménagements de commande ou de sécurité - Détails de construction de tels systèmes pour la commande de la température de l’air fourni en commandant l’absorption ou la restitution de chaleur dans des éléments extérieurs
F24F 11/00 - Aménagements de commande ou de sécurité
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
F28C 1/14 - Réfrigérants à ruissellement à contact direct, p.ex. tours de réfrigération comprenant également un échange de chaleur sans contact direct
F28F 25/02 - PARTIES CONSTITUTIVES OU AMÉNAGEMENTS, D'APPLICATION GÉNÉRALE, DES DISPOSITIFS ÉCHANGEURS DE CHALEUR OU DE TRANSFERT DE CHALEUR - Parties constitutives des réfrigérateurs à ruissellement pour répartir, faire circuler ou collecter le liquide
48.
TRANSCRITICAL SYSTEM WITH ENHANCED SUBCOOLING FOR HIGH AMBIENT TEMPERATURE
In certain embodiments, a transcritical refrigeration system provides refrigeration by circulating refrigerant through the system. The system includes a gas cooler, a heat exchanger, a high pressure expansion valve, a flash tank, refrigeration cases, and compressors. The gas cooler cools the refrigerant to a first temperature. The heat exchanger cools the refrigerant flowing from the gas cooler to the high pressure expansion valve to a second temperature. The high pressure expansion valve is coupled to the flash tank, which is coupled to the refrigeration cases. The refrigeration cases are coupled to the compressors, which are coupled to the gas cooler. An expansion valve between the gas cooler and the heat exchanger may cool the refrigerant flowing to the heat exchanger. A high pressure vapor compressor between the heat exchanger and the gas cooler may compress the refrigerant flowing from the heat exchanger to the gas cooler.
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 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 system includes a high side heat exchanger, a first load, a second load, a third load, a first compressor, a second compressor, a third compressor, and a fourth compressor. The high side heat exchanger removes heat from a refrigerant. The first load uses the refrigerant to remove heat from a first space proximate the first load. The second load uses the refrigerant to remove heat from a second space proximate the second load. The third load uses the refrigerant to remove heat from a third space proximate the third load. The first compressor compresses the refrigerant from the first load. The second compressor compresses the refrigerant from the second load. The third compressor compresses the refrigerant from the third load and the refrigerant from the second compressor. The fourth compressor compresses the refrigerant from the first compressor.
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
F25D 13/04 - Dispositifs fixes associés à des machines frigorifiques, p.ex. chambres froides avec plusieurs compartiments de refroidissement, p.ex. casiers frigorifiques les compartiments étant à des températures différentes
50.
INTEGRATED REFRIGERATION AND AIR CONDITIONING SYSTEM
A system includes a high side heat exchanger, a flash tank, an air conditioner load, an air conditioner ejector, a refrigeration load, a first compressor, a second compressor, and a vapor ejector. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger. The air conditioner load uses the refrigerant from the flash tank to remove heat from a first space proximate the air conditioner load. The air conditioner ejector pumps the refrigerant from the air conditioner load to the flash tank. The refrigeration load uses the refrigerant from the flash tank to remove heat from a second space proximate the refrigeration load. The first compressor compresses the refrigerant from the refrigeration load. The second compressor compresses a flash gas from the flash tank. The vapor ejector pumps the refrigerant from the refrigeration load to the flash tank.
F25B 41/42 - Agencements pour diviser ou combiner des flux, p.ex. embranchements ou jonctions
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 9/08 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant des éjecteurs
A system includes a high side heat exchanger, a first load, a second load, a first compressor, a second compressor, and a third compressor. The high side heat exchanger removes heat from a refrigerant. The first load uses the refrigerant to remove heat from a first space proximate the first load. The second load uses the refrigerant to remove heat from a second space proximate the second load. The first compressor compresses the refrigerant from the first load and sends the refrigerant to the first load. The refrigerant defrosts the first load. The second compressor compresses the refrigerant from the second load and the refrigerant from the first load that defrosted the first load. The third compressor compresses the refrigerant from the first compressor.
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
An apparatus includes a first compressor, a first load, a second compressor, a second load, a first heat exchanger, and a second heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The first heat exchanger receives the first refrigerant from the first compressor. The first heat exchanger transfers heat from the first refrigerant to a fluid. The second heat exchanger receives the second refrigerant from the second compressor. The second heat exchanger transfers heat from the fluid to the second refrigerant.
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 6/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs
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
An apparatus includes a compressor, a load, a heat exchanger, and a heater. The compressor compresses a refrigerant. The load uses the refrigerant to remove heat from a space proximate the load. The load sends the refrigerant to the compressor. The heat exchanger receives the refrigerant from the compressor. The heat exchanger transfers heat from a fluid to the refrigerant. The heat exchanger discharges the refrigerant to the compressor. The heater adds heat to the fluid.
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 6/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs
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
An apparatus includes a first compressor, a first load, a second compressor, a second load, and a heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The heat exchanger receives the first refrigerant from the first compressor and receives the second refrigerant from the second compressor. The heat exchanger transfers heat from the first refrigerant to the second refrigerant. The heat exchanger discharges the first refrigerant to the first load and discharges the second refrigerant to the second compressor.
F25B 25/00 - Machines, installations ou systèmes utilisant une combinaison des principes de fonctionnement compris dans plusieurs des groupes
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
F25B 6/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits de condenseurs
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
55.
HEAT PIPE ANCHOR TUBES FOR HIGH SIDE HEAT EXCHANGERS
In a particular embodiment, a cooling system contains a compressor configured to compress a refrigerant, a high side heat exchanger configured to remove heat from the refrigerant, and a load configured to cool a space using the refrigerant. The high side heat exchanger has a frame and one or more refrigerant tubes extending through the frame, wherein each refrigerant tube has at least one cavity configured to allow the refrigerant to flow through the refrigerant tube. The high side heat exchanger is configured to remove heat from the refrigerant as the refrigerant flows through the one or more refrigerant tubes. The high side heat exchanger also has one or more heat pipes contacting the frame that, collectively, bear at least 25% of the weight of the one or more refrigerant tubes, are coupled directly to the frame, and are configured to remove heat from the flowing refrigerant.
F28D 15/04 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs avec des tubes ayant une structure capillaire
F28D 21/00 - Appareils échangeurs de chaleur non couverts par l'un des groupes
56.
SYSTEM AND METHOD FOR REDUCING MOISTURE IN A REFRIGERATED ROOM
A method includes receiving moisturized air from a refrigerated room and absorbing, in a portion of a desiccant wheel, moisture from the moisturized air, wherein absorbing moisture from the moisturized air produces dehumidified air. The method further includes discharging the dehumidified air to the refrigerated room.
F25D 21/04 - Mesures contre la formation de givre ou de condensat
F24F 3/14 - Systèmes de conditionnement d'air dans lesquels l'air conditionné primaire est fourni par une ou plusieurs stations centrales aux blocs de distribution situés dans les pièces ou enceintes, blocs dans lesquels il peut subir un traitement secondaire; Appareillage spécialement conçu pour de tels systèmes caractérisés par le traitement de l'air autrement que par chauffage et refroidissement par déshumidification
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
F25D 13/00 - Dispositifs fixes associés à des machines frigorifiques, p.ex. chambres froides
57.
SYSTEM AND METHOD FOR REUSING WASTE HEAT OF A TRANSCRITICAL REFRIGERATION SYSTEM
A method for a refrigeration system includes applying, by a gas cooler of the refrigeration system, a first cooling stage to refrigerant circulating through the refrigeration system load. The method further comprises applying, by a heat exchanger located downstream from the gas cooler, a second cooling stage to the refrigerant, wherein the second cooling stage removes heat from the refrigerant, and applying, by the heat exchanger located downstream from the gas cooler, the heat removed during the second cooling stage to a water heating system operable to heat water.
F25B 29/00 - Systèmes de chauffage et de refroidissement combinés, p.ex. fonctionnant alternativement ou simultanément
F24D 3/12 - Aménagements de tubes et panneaux pour le chauffage par plafond, mur ou sol
F24D 3/18 - Systèmes de chauffage central à eau chaude utilisant des pompes à chaleur
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
58.
FLASH TANK PRESSURE CONTROL FOR TRANSCRITICAL SYSTEM WITH EJECTOR(S)
In certain embodiments, a transcritical refrigeration system provides refrigeration by circulating carbon dioxide (CO2) refrigerant through the system. A flash tank of the transcritical refrigeration system is operable to supply the CO2 refrigerant, in liquid form, to a low temperature refrigeration case and a medium temperature refrigeration ease. A low temperature compressor is operable to compress the CO2 refrigerant discharged from the low temperature refrigeration case. A medium temperature compressor, a parallel compressor, and an ejector are each operable to compress the CO2 refrigerant discharged from the medium temperature refrigeration case, the CO2 refrigerant discharged from the low temperature compressor, and/or CO2 flash gas discharged from the flash tank. A gas cooler is operable to cool the CO2 refrigerant discharged from the medium temperature compressor and the parallel compressor. A controller is operable to dynamically adjust a pressure set point for the flash tank.
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
F25B 9/08 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé utilisant des éjecteurs
59.
SYSTEM FOR CONTROLLING A REFRIGERATION SYSTEM WITH A PARALLEL COMPRESSOR
A method for a refrigeration system includes determining whether a parallel compressor of the refrigeration system is operational, directing refrigerant discharged front a first compressor of the refrigeration system to a second compressor of the refrigeration system if the parallel compressor is not operational, and directing the refrigerant discharged from the first compressor to the parallel compressor if the parallel compressor is operational. The first compressor of the refrigeration system is operable to compress refrigerant discharged from a first refrigeration case, the second compressor is operable to compress refrigerant discharged from a second refrigeration case, and the parallel compressor, when operational, is operable to provide parallel compression for the second compressor.
F25B 49/02 - Disposition ou montage des dispositifs de commande ou de sécurité pour machines, installations ou systèmes du type à compression
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
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
An absorption subcooler comprises a first heat exchanger operable to receive refrigerant from a compressor of a refrigeration system and apply a first cooling stage to the refrigerant. The absorption subcooler is further operable to discharge the refrigerant to a gas cooler operable to apply a second cooling stage to the refrigerant.
A system includes a high side heat exchanger, a flash tank, a vessel, a load, and a compressor. The high side heat exchanger removes heat from a refrigerant. The flash tank stores the refrigerant from the high side heat exchanger. The vessel includes a chamber defined by an exterior housing and a tube positioned within the chamber. Heat is removed from the liquid refrigerant circulating through this tube and coming from the flash tank. The load uses the refrigerant from the tube to remove heat from a space proximate the load. The load sends the refrigerant into the chamber between the exterior housing and the tube. The compressor receives the refrigerant from the chamber between the exterior housing and the tube and compresses the refrigerant.
A system includes a high side heat exchanger, a flash tank, a compressor, and eight metal beams. Each of the metal beams extend in a linearly vertical direction. The eight metal beams define ten planar boundaries. The first, second, third, and fourth planar boundaries define a first space. The first, fifth, sixth, and seventh planar boundaries define a second space. The fifth, eighth, ninth, and tenth planar boundaries define a third space. The high side heat exchanger is contained entirely within the third space. The flash tank is contained entirely within the first space. The compressor is contained entirely within the second space.
An apparatus includes a first metal beam and a mounting bracket. The first metal beam is arranged in a linearly horizontal direction and defines a plurality of first and second cavities along a top surface of the first metal beam. Each first cavity is of a first shape and is separated from another first cavity by a first distance. Each second cavity is of a second shape different from the first shape and is separated from another second cavity by a second distance greater than the first distance. The mounting bracket couples to the top surface of the first metal beam at a first mounting cavity of the plurality of second cavities and the top surface of the second metal beam at a second mounting cavity of the plurality of fourth cavities. The mounting bracket further couples to a compressor.
F16M 1/04 - Châssis, carters ou carcasses pour moteurs, machines ou appareils; Châssis servant de bâtis de machines pour moteurs rotatifs ou machines similaires
A system includes a flash tank, a load, a first compressor, a second compressor, a refrigerant routing line, and a flash gas bypass line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The refrigerant routing line routes the refrigerant from the first compressor to the flash tank below a liquid level line of the flash tank. The flash gas bypass line is coupled to the flash tank and sends the refrigerant as a flash gas from the flash tank to the second compressor. The second compressor compresses the refrigerant.
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
A system includes a high side heat exchanger, a modulating valve, a flash tank, and a refrigeration unit. The high side heat exchanger is configured to remove heat from refrigerant. The modulating valve is configured to control the flow of refrigerant from the high side heat exchanger to both a heat exchanger and a flash tank. The flash tank is configured to store refrigerant from the heat exchanger and from the high side heat exchanger. The refrigeration unit is configured to receive refrigerant from the flash tank.
F25B 41/20 - Disposition des soupapes, p.ex. de soupapes marche-arrêt ou de soupapes de régulation de débit
F25B 5/00 - Machines, installations ou systèmes à compression, avec plusieurs circuits d'évaporateurs, p.ex. pour faire varier la puissance frigorifique
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
A system includes a temperature sensor, a pressure sensor, and a controller. The temperature sensor measures a temperature of a refrigerant at a compressor. The compressor receives the refrigerant from a second compressor. The pressure sensor measures a pressure of the refrigerant at the compressor. The controller receives one or more of the measured temperature and the measured pressure and determines that one or more of the measured temperature and the measured pressure exceed a threshold. In response to that determination, the controller actuates a pulse valve coupled to a liquid injection line. The pulse valve controls the flow of a liquid refrigerant from a flash tank through the liquid injection line to mix with the refrigerant at the compressor.
A system includes a flash tank, a load, a first compressor, a second compressor, and a liquid injection line. The flash tank stores a refrigerant. The load uses the refrigerant from the flash tank to remove heat from a space proximate the load. The first compressor compresses the refrigerant from the load. The second compressor compresses the refrigerant from the first compressor. The liquid injection line is coupled to the flash tank and to the second compressor and sends a liquid refrigerant from the flash tank to mix with the refrigerant from the first compressor before the refrigerant from the first compressor is received by the second compressor.
F25B 43/00 - Dispositions pour la séparation ou la purification des gaz ou des liquides; Dispositions pour la vaporisation des résidus de fluides frigorigènes, p.ex. par la chaleur
A system includes a condensing unit, a valve, and a unit cooler. The condensing unit is configured to condense refrigerant. The valve is configured to control the flow of the refrigerant from the condensing unit to the unit cooler. The unit cooler is configured to operate in a refrigeration mode and a stir-cycle mode. The unit cooler is configured to operate at a first speed during the refrigeration mode and at a second speed for a first period of time and at a third speed for a second period of time during the stir-cycle mode. The second speed is slower than the first speed and the third speed is slower than the second speed. Electric power is supplied to the unit cooler throughout the refrigeration mode and the stir-cycle mode.
F25B 9/14 - Machines, installations ou systèmes à compression dans lesquels le fluide frigorigène est l'air ou un autre gaz à point d'ébullition peu élevé caractérisés par le cycle utilisé, p.ex. cycle de Stirling
69.
TRANSCRITICAL CARBON DIOXIDE REFRIGERATION SYSTEM WITH MULTIPLE EJECTORS
The present application provides a carbon dioxide based refrigeration system. The carbon dioxide based refrigeration system may include a mid temperature cycle with a mid temperature ejector, a low temperature cycle with a low temperature ejector, and a gas cooler/condenser in communication with the mid temperature cycle and the low temperature cycle.
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
One aspect provides a sealed transparent panel for use in a refrigerated display case. In this embodiment, the panel comprises first and second transparent sheets having a sealed space therebetween, and at least one light emitting diode (LED) located within the sealed space and extending along a length of the first and second transparent sheets.
F21S 4/20 - Dispositifs ou systèmes d'éclairage utilisant une guirlande ou une bande de sources lumineuses avec les sources lumineuses maintenues par ou à l'intérieur de supports allongés
F21V 29/70 - Dispositions de refroidissement caractérisées par des éléments passifs de dissipation de chaleur, p.ex. puits thermiques
F21K 9/00 - Sources lumineuses utilisant des dispositifs à semi-conducteurs en tant qu’éléments générateurs de lumière, p.ex. utilisant des diodes électroluminescentes [LED] ou des lasers
A47F 3/04 - Vitrines ou meubles d'exposition à air conditionné ou réfrigéré
A47F 3/12 - Griffes ou autres dispositifs pour soutenir, assembler ou assujettir les glaces
The shelf assembly comprises a shelf having top and bottom surfaces. The shelf includes at least one support rail that is secured to the bottom surface of the shelf and runs parallel to one side of said shelf. The support rail also has a tab slot, which is located in a side and adjacent to an end thereof. The shelf assembly also comprises a shelf bracket having a horizontal lip and a skirt that extends perpendicular from said lip. The lip and the skirt extend along a length of the shelf bracket, and the shelf bracket has a first tab, which is located in the lip and configured to be removably received in the tab slot. The shelf bracket also has anchoring tabs that are located on an end thereof and configured to be received in a shelving support frame.
A47F 3/06 - Vitrines ou meubles d'exposition à étagères mobiles ou amovibles
A47B 57/20 - 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 rayons consistant en languettes, chevilles ou moyens en saillie similaires agissant en liaison avec des ouvertures
A47B 57/52 - 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 languettes, chevilles ou moyens en saillie similaires s'engageant dans des ouvertures caractérisés par la conformation ou l'orientation des ouvertures, p.ex. en forme de trous de serrure les supports de rayons étant en porte-à-faux
The present application provides a microchannel coil manifold system. The microchannel coil manifold system may include a number of assembly inlet manifold sections that terminate in a first stub tube, a number of assembly outlet manifold sections that terminate in a second stub tube, and one or more microchannel coils. Each pair of assembly inlet and outlet manifold sections may be in communication with the one or more microchannel coils.
F28D 1/04 - Appareils échangeurs de chaleur comportant des ensembles de canalisations fixes pour une seule des sources de potentiel calorifique, les deux sources étant en contact chacune avec un côté de la paroi de la canalisation, dans lesquels l'autre source d avec des canalisations d'échange de chaleur immergées dans la masse du fluide avec canalisations tubulaires
F28F 9/26 - Dispositions pour raccorder des sections différentes des éléments d'échangeurs de chaleur, p.ex. de radiateur
The present application provides a heat exchanger assembly. The heat exchanger assembly may include a microchannel coil and a frame. The frame may include a slot to position the microchannel coil therein. A coil attachment may connect the microchannel coil at a first end of the frame.
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
A cascade refrigeration system, which comprises a top cycle that circulates a first refrigerant, a low cycle that circulates a second refrigerant, and a heat exchanger through which the two cycles interface. The system further comprises a second heat exchanger through which the second refrigerant is superheated by the first refrigerant, while the first refrigerant is simultaneously subcooled by the second refrigerant. The system further comprises a control system that can regulate the amount of superheating of the second 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
A cascade refrigeration system, which comprises a top cycle that circulates a first refrigerant, a low cycle that circulates a second refrigerant, and a heat exchanger through which the two cycles interface. The system further comprises a second heat exchanger through which the second refrigerant is superheated by the first refrigerant, while the first refrigerant is simultaneously subcooled by the second refrigerant. The system further comprises a control system that can regulate the amount of superheating of the second 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
brevets
