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公开(公告)号：US20230071132A1
公开(公告)日：2023-03-09
申请号：US17466065
申请日：2021-09-03
摘要： 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.
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公开(公告)号：US20220397325A1
公开(公告)日：2022-12-15
申请号：US17344335
申请日：2021-06-10
发明人： Karthick Kuppusamy
摘要： 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.
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公开(公告)号：US11493247B2
公开(公告)日：2022-11-08
申请号：US16735234
申请日：2020-01-06
发明人： Xi Sun
摘要： 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.
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公开(公告)号：US11384969B2
公开(公告)日：2022-07-12
申请号：US16803413
申请日：2020-02-27
发明人： Shitong Zha , Augusto Zimmermann
摘要： 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.
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公开(公告)号：US11346587B2
公开(公告)日：2022-05-31
申请号：US16537477
申请日：2019-08-09
发明人： Nicole Z. Martin
摘要： In a refrigeration system, a tube-and-fin heat exchanger has spaced fins that extend to an outer periphery of the heat exchanger and has smaller embedded fins in between or in a spaced relationship with each of the other fins. The embedded fins do not extend all the way to the outer periphery of the fins along the airside directions but have a shorter outer periphery such that there is an offset distance. Because of the offset distance, there is space that continues to provide room for fluid movement without fouling of the face of the heat exchanger and that provides an expected appearance while still having the benefit of additional fins elements further inside of the heat exchanger. Other exchangers and condensers are included.
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公开(公告)号：US20210372676A1
公开(公告)日：2021-12-02
申请号：US17403129
申请日：2021-08-16
发明人： Douglas Cole
摘要： An apparatus includes a conduit coupled to a suction header that is configured to receive a refrigerant and an oil separator that is configured to separate an oil from the refrigerant received from a compressor. During a first mode of operation, the conduit is configured to remove excess oil from the refrigerant that has collected at the suction header. During a second mode of operation, the oil separator is configured to direct to the conduit the oil separated from the refrigerant received from the compressor. The conduit is configured to direct to an oil reservoir the oil from the oil separator and the excess oil removed from the refrigerant.
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公开(公告)号：USD934705S1
公开(公告)日：2021-11-02
申请号：US29714885
申请日：2019-11-26
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公开(公告)号：US11150001B2
公开(公告)日：2021-10-19
申请号：US16716686
申请日：2019-12-17
发明人： Shitong Zha
IPC分类号： F25B49/02 , F24F11/46 , F25B41/22 , F25B1/10 , F24F110/12
摘要： 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.
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公开(公告)号：US11143444B2
公开(公告)日：2021-10-12
申请号：US16244804
申请日：2019-01-10
发明人： Douglas Cole
摘要： 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.
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公开(公告)号：US20210270502A1
公开(公告)日：2021-09-02
申请号：US16803413
申请日：2020-02-27
发明人： Shitong Zha , Augusto Zimmermann
摘要： 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.
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