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公开(公告)号：US11982481B2
公开(公告)日：2024-05-14
申请号：US17872786
申请日：2022-07-25
发明人： Azam Mihir Thatte
CPC分类号： F25B9/008 , F25B39/00 , F25B41/20 , F25B43/043 , F25B49/02 , F25B2309/06 , F25B2309/061 , F25B2400/23 , F25B2600/2515 , F25B2700/19 , F25B2700/21
摘要： A refrigeration system includes a rotary pressure exchanger fluidly coupled to a low pressure branch and a high pressure branch. The rotary pressure exchanger is configured to receive the refrigerant at high pressure from the high pressure branch, to receive the refrigerant at low pressure from the low pressure branch, and to exchange pressure between the refrigerant at high pressure and the refrigerant at low pressure, and wherein a first exiting stream from the rotary pressure exchanger includes the refrigerant at high pressure in the supercritical state or the subcritical state and a second exiting stream from the rotary pressure exchanger includes the refrigerant at low pressure in the liquid state or the two-phase mixture of liquid and vapor.
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公开(公告)号：US11913693B2
公开(公告)日：2024-02-27
申请号：US15734846
申请日：2019-11-27
申请人： Carrier Corporation
发明人： Rajiv Ranjan , Yinshan Feng , Parmesh Verma , Michael A. Stark
IPC分类号： F25B43/04 , B01D53/047 , F25B49/02
CPC分类号： F25B43/043 , B01D53/047 , F25B49/02 , B01D2257/104 , F25B2600/2505 , F25B2700/195 , F25B2700/1931
摘要： A method of purging contaminants from a refrigerant of a heat pump via a purge system includes generating a driving force across a separator, providing refrigerant including contaminants to the separator, separating the contaminants from the refrigerant within the separator, monitoring one or more parameters of the purge system and the heat pump, and actively controlling an operational parameter of the purge system in response to monitoring one or more parameters of the purge system and the heat pump.
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公开(公告)号：US11911724B2
公开(公告)日：2024-02-27
申请号：US15734842
申请日：2019-12-03
申请人： Carrier Corporation
发明人： Rajiv Ranjan , Yinshan Feng , Parmesh Verma
CPC分类号： B01D53/02 , F25B49/02 , B01D53/228 , B01D2253/204 , F25B43/043
摘要： A heat pump includes a vapor compression system and a cooling unit thermally coupled to the vapor compression system. A purge system is arranged in fluid communication with the vapor compression system. The purge system includes at least one separator operable to separate contaminants from a refrigerant purge gas provided to the purge system from the vapor compression system.
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公开(公告)号：US11821667B2
公开(公告)日：2023-11-21
申请号：US17520901
申请日：2021-11-08
申请人： NEC Corporation
CPC分类号： F25B49/02 , F25B39/00 , F25B43/043 , F25B2400/16 , F25B2400/24 , F25B2600/05 , F25B2600/2513
摘要： A cooling apparatus includes a heat receiver that evaporates a low pressure heat transfer medium. The apparatus includes a compressor that compresses the evaporated heat transfer medium in a gas phase state, and a condenser that condenses the compressed heat transfer medium. The apparatus includes a receiver tank that receives and stores at least one of the heat transfer medium from any place in a flow path of the medium in the gas phase state that returns the medium to the heat receiver and the condensed medium in a liquid phase state. The apparatus includes an air storage tank that air separated from the heat transfer medium. The apparatus includes a liquid level controller that controls a liquid level in the receiver tank such that the heat transfer medium is stored in the receiver tank at a predetermined liquid level height.
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公开(公告)号：US20230228467A1
公开(公告)日：2023-07-20
申请号：US18189055
申请日：2023-03-23
CPC分类号： F25B39/04 , F25B43/043 , F25B49/02
摘要： Embodiments of the present disclosure are directed toward purge units of vapor compression systems, and methods of control thereof, that improve efficiency by selectively activating and deactivating the purge unit in response to one or more conditions to, for example, enable refrigerant-to-air ratios within the purge unit within certain industry standards while still minimizing the durations of the purge cycles. For example, in certain embodiments, these conditions may include conditions within the chiller condenser, time since last purge activation, time since last venting of non-condensables, and combinations thereof. By reducing an amount of time that the purge unit would be active without removing a substantial amount non-condensables from the vapor compression system, present embodiments reduce the power consumption of the purge unit, as well as the vapor compression system as a whole, while still being responsive to prevent or mitigate a loss of efficiency due to a substantial accumulation of non-condensables in the condenser of the vapor compression system.
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公开(公告)号：US11635239B2
公开(公告)日：2023-04-25
申请号：US17385130
申请日：2021-07-26
发明人： Daoud Ali Jandal , Julie Ann Majurin , Stephen Anthony Kujak , Raymond Scott Schafer , Paul Edmond Cieslinski
摘要： Refrigeration systems with a purge for removing non-condensables from the refrigerant and an acid filter for remove acid from the refrigerant are provided. The acid filter can be operatively connected to the purge. Optionally, the purge can include a separating device for separating non-condensable gases from condensable refrigerant gases and an acid filter is provided to remove acid from the condensable refrigerant gases.
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公开(公告)号：US11635238B2
公开(公告)日：2023-04-25
申请号：US16652581
申请日：2018-10-04
摘要： Embodiments of the present disclosure are directed toward purge units of vapor compression systems, and methods of control thereof, that improve efficiency by selectively activating and deactivating the purge unit in response to one or more conditions to, for example, enable refrigerant-to-air ratios within the purge unit within certain industry standards while still minimizing the durations of the purge cycles. For example, in certain embodiments, these conditions may include conditions within the chiller condenser, time since last purge activation, time since last venting of non-condensables, and combinations thereof. By reducing an amount of time that the purge unit would be active without removing a substantial amount non-condensables from the vapor compression system, present embodiments reduce the power consumption of the purge unit, as well as the vapor compression system as a whole.
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公开(公告)号：US11519648B2
公开(公告)日：2022-12-06
申请号：US16958812
申请日：2018-12-31
发明人： Khaled Gommed , Gershon Grossman , Yigal Evron
摘要： A high-efficiency, motorless purge system for closed-cycle absorption heat pumps, adapted for both absorption heat transformers and absorption chillers, using a series of valves to control the entry and exit of absorbent solution into a low-pressure, secondary absorption vessel. A small percentage of the total circulating solution is forced under pressure into the secondary absorption vessel via a spray nozzle, causing adiabatic absorption of absorbate vapor by the solution. Non-condensable gases accumulate in the secondary absorber until a certain vapor pressure is reached, upon which, gas, and possibly liquid, are transferred to an exhaust vessel having an exit vent for non-condensable gases. In an absorption chiller system, the secondary absorber has an internal heat exchanger to lower the temperature of the solution within, to facilitate the absorption process.
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公开(公告)号：US20220307744A1
公开(公告)日：2022-09-29
申请号：US17687000
申请日：2022-03-04
发明人： Hideo Nishioka
摘要： A reservoir tank includes a first chamber, a second chamber, an inflow port coupled to the first chamber, an outflow port coupled to the second chamber, a partition wall provided to separate the first chamber and the second chamber from each other, and a refrigerant flow port provided in the partition wall to connect the first chamber and the second chamber to each other. When the reservoir tank is viewed in a plan view, at least a portion of a range of an inner wall of the first chamber facing the inflow port is curved in an arc shape.
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公开(公告)号：US20220186995A1
公开(公告)日：2022-06-16
申请号：US16973697
申请日：2020-05-29
申请人： Carrier Corporation
发明人： Rajiv Ranjan , Ying She
摘要： Disclosed is a refrigeration system comprising: condenser; an expansion valve; a first conduit fluidly connecting the condenser and the expansion valve to define a first fluid segment through which a medium is transported when the system is active; and a separator assembly, operably disposed in the first fluid segment, configured to remove non-condensable gas from the medium when the system is active.
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