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公开(公告)号：US20230134655A1
公开(公告)日：2023-05-04
申请号：US17911702
申请日：2020-10-12
发明人： Keisuke TAKAYAMA , Shinichi UCHINO
摘要： A refrigeration cycle device includes a third refrigerant passage connecting a utilization heat exchanger to a first expansion valve, a fourth refrigerant passage connecting the first expansion valve to a receiver, a fifth refrigerant passage connecting the receiver to a second expansion valve, a sixth refrigerant passage connecting the second expansion valve to an air heat exchanger, a hot-gas bypass passage connecting a discharge passage to the sixth refrigerant passage, a hot-gas bypass valve, an internal heat exchanger to exchange heat between the liquid refrigerant inside the receiver and the refrigerant passing through the suction passage, a liquid bypass passage including an inlet portion connected to the fourth refrigerant passage, the fifth refrigerant passage, or a lower portion of the receiver, and an outlet portion connected to the suction passage upstream of the internal heat exchanger, and a liquid bypass valve.
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公开(公告)号：US11629890B1
公开(公告)日：2023-04-18
申请号：US17114785
申请日：2020-12-08
发明人： Igor Vaisman , Joshua Peters
摘要： Thermal management systems are described. These systems include a refrigerant receiver configured to store a refrigerant fluid, an evaporator, a closed-circuit refrigeration system having a closed fluid circuit path, with the refrigerant receiver and evaporator disposed in the closed fluid circuit path, and the closed fluid circuit path including a condenser and compressor. These systems also include a modulation capacity control circuit configured to selectively divert refrigerant vapor flow to the condenser from the compressor by diverting a portion of refrigerant vapor flow (diverted flow) from the compressor to the refrigerant receiver in accordance with cooling capacity demand. These systems also include an open-circuit refrigeration system having an open fluid circuit path with the refrigerant receiver and the evaporator, and an exhaust line that discharges the refrigerant fluid from the exhaust line so that the discharged refrigerant fluid is not returned to the open-circuit and the closed-circuit refrigerant fluid flow paths.
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公开(公告)号：US20230101537A1
公开(公告)日：2023-03-30
申请号：US17802055
申请日：2021-02-24
申请人： LG ELECTRONICS INC.
发明人： Youngmin LEE , Jihyeong RYU , Eunjun CHO , Minsoo KIM
摘要： A heat pump is provided that includes a first pipe in which a first refrigerant flows; a second pipe disposed at a side of the first pipe and in which a second refrigerant flows; a first heat exchanger connected with the first pipe and the second pipe and in which the first refrigerant exchanges heat with the second refrigerant; a boiler connected with the first pipe and in which the first refrigerant flows; a compressor connected with the second pipe and that compresses the second refrigerant; a second heat exchanger connected with the second pipe and in which the second refrigerant exchanges heat with outdoor air; a bypass pipe branched from first pipe and configured to exchange heat with the second heat exchanger; and a three-way valve that directs the first refrigerant to pass through the bypass pipe. When the outdoor heat exchanger operates as an evaporator, frost formation thereon may be prevented.
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公开(公告)号：US20220404081A1
公开(公告)日：2022-12-22
申请号：US17846955
申请日：2022-06-22
发明人： Igor Vaisman , Joshua Peters
摘要： A thermal management system includes a closed-circuit refrigeration system that includes a closed-circuit refrigerant fluid path configured to store a refrigerant fluid; and an absorber/desorber including a bidirectional port coupled to the closed-circuit refrigerant fluid path to regulate an amount of refrigerant vapor at a compressor inlet of the closed-circuit refrigeration system. The absorber/desorber is configured to store an ionic liquid that is configured to absorb or desorb at least a portion of the refrigerant vapor based on a mode of operation of the absorber/desorber.
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公开(公告)号：US20220404074A1
公开(公告)日：2022-12-22
申请号：US17894630
申请日：2022-08-24
申请人： Kenneth Ray Green
发明人： Kenneth Ray Green
摘要： A refrigerant metering system/method incorporating a manual expansion valve (MEV), condenser isolation valve (CIV), flow isolation valve (FIV), and evaporator isolation valve (EIV) is disclosed. The MEV is configured to replace a conventional automated expansion valve (AEV) that controls a refrigerant flow valve (RFV) that is positioned in a heating, ventilation, and air conditioning (HVAC) system between a refrigerant condenser coil (RCC) and a refrigerant evaporator coil (REC) and permits manual metering of refrigerant by the RFV from the RCC to the REC and also allows complete shutoff of refrigerant flow by the RFV from the RCC to the REC. The MEV allows rapid HVAC repair and restoration of service where a replacement AEV is not readily available. The CIV/FIV/EIV are positioned in the refrigerant flow lines to permit the AEV and/or REC to be isolated from HVAC refrigerant flow for repairs to the AEV and/or REC.
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公开(公告)号：US20220404071A1
公开(公告)日：2022-12-22
申请号：US17639134
申请日：2020-08-19
申请人： BSH Hausgeraete GmbH
摘要： A refrigeration appliance, especially domestic refrigeration appliance, includes a compressor, a condenser, at least a first evaporator, a suction line from the first evaporator to the compressor, at least one heat exchanger switchable between condenser operation and evaporator operation, and a valve arrangement switching the heat exchanger between an evaporator operating state, having a switchable heat exchanger inlet connected to the condenser through a first choke point and a switchable heat exchanger outlet connected to the first evaporator, and a condenser operating state, having the switchable heat exchanger outlet connected to the evaporator through a second choke point. A first supply line for supplying refrigerant in the evaporator operating state and a second supply line, separate therefrom, for supplying refrigerant in the condenser operating state, are associated with the switchable heat exchanger. Only the first supply line is connected with the suction line, forming an external heat exchanger.
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公开(公告)号：US11530857B2
公开(公告)日：2022-12-20
申请号：US17093868
申请日：2020-11-10
摘要： The disclosed technology includes systems and methods for controlling an air conditioning system. The method of controlling the air conditioning system can include receiving air temperature data from an air temperature sensor and determining that the air conditioning system should operate in a reheat mode based on the air temperature being less than a threshold air temperature. The method can include outputting a control signal to a first electronic expansion valve to close and thereby prevent refrigerant to flow through an outdoor condenser coil. The method can also include outputting a control signal to a second electronic expansion valve to open and thereby permit refrigerant to flow through a reheat coil.
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公开(公告)号：US11499727B2
公开(公告)日：2022-11-15
申请号：US16738289
申请日：2020-01-09
申请人： LG Electronics Inc.
发明人： Donghwi Kim , Hyungjoon Kim , Junseong Park , Yongcheol Sa
IPC分类号： F24F1/16 , F28F27/02 , F25B41/40 , F24F13/30 , F24F1/0063 , F25B13/00 , F25B41/26 , F25B41/31 , F25B41/34
摘要： An air conditioning apparatus includes a heat exchange device that connects an outdoor unit to an indoor unit and that includes a heat exchanger configured to perform heat exchange between refrigerant and water. The heat exchanger reduces an amount of refrigerant used to perform a cooling operation or a heating operation.
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公开(公告)号：US11473818B2
公开(公告)日：2022-10-18
申请号：US16813023
申请日：2020-03-09
IPC分类号： F25B1/10 , F25B30/06 , F25B5/02 , F25B9/14 , F25B25/00 , F25B40/02 , F25B40/04 , F25B41/31 , F25B25/02
摘要： Methods, systems, and device for cycle enhancement are provided in accordance with various embodiments. Various embodiments generally pertain to refrigeration and heat pumping. Different embodiments may be applied to a variety of heat pump architectures. Some embodiments may integrate with vapor compression heat pumps in industrial, commercial, and/or residential applications. Some embodiments include a method that may include at least: removing a first heat from a vapor compression cycle; utilizing the first removed heat from the vapor compression cycle to drive a thermally driven heat pump; or removing a second heat from the vapor compression cycle utilizing the thermally driven heat pump to reduce a temperature of a refrigerant of the vapor compression cycle below an ambient temperature.
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公开(公告)号：US20220282885A1
公开(公告)日：2022-09-08
申请号：US17629509
申请日：2020-07-10
发明人： Baitian ZHUO , Bin SHI , Shaojiang CHENG , Ruigang ZHANG , Jun WANG
摘要： An expansion valve control method for a multi-split air-conditioning system to solve the problem of detecting leakage of an expansion valve of a multi-split air-conditioning system. The system includes an outdoor unit and a plurality of indoor units connected to the outdoor unit, each of the indoor units is connected to the outdoor unit by a first pipeline and a second pipeline. The expansion valve control method includes acquiring an indoor temperature of an environment where an indoor unit is located; acquiring the temperature of a first pipeline of the indoor unit and the temperature of a second pipeline of the indoor unit when the indoor unit is in a shutdown state; and according to at least the indoor temperature of the environment where the indoor unit is located, determining the leakage condition of an expansion valve of the indoor unit.
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