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    REFRIGERATION SYSTEM USING EMERGENCY ELECTRIC POWER
    1.
    发明申请
    REFRIGERATION SYSTEM USING EMERGENCY ELECTRIC POWER 审中-公开

    公开(公告)号：US20190003756A1

    公开(公告)日：2019-01-03

    申请号：US15636018

    申请日：2017-06-28

    申请人： Heatcraft Refrigeration Products LLC

    发明人： Steven C. Pfister ,  Douglas Samuel Cole

    IPC分类号： F25B49/02 ,  F25B27/00

    CPC分类号： F25B49/022 ,  F25B27/00 ,  F25B2400/0403 ,  F25B2500/07 ,  F25B2600/024 ,  F25B2600/025 ,  F25B2700/15 ,  F25B2700/151

    摘要： 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.

    CLIMATIC TEST CHAMBER WITH STABLE CASCADING DIRECT EXPANSION REFRIGERATION SYSTEM
    2.
    发明申请
    CLIMATIC TEST CHAMBER WITH STABLE CASCADING DIRECT EXPANSION REFRIGERATION SYSTEM 审中-公开

    公开(公告)号：US20180320933A1

    公开(公告)日：2018-11-08

    申请号：US15818884

    申请日：2017-11-21

    申请人： Weiss Technik North America, Inc.

    发明人： Christian Haack ,  Benjamin J. DeJager

    IPC分类号： F25B7/00 ,  F25B5/02 ,  F25B41/06

    CPC分类号： F25B7/00 ,  F25B5/02 ,  F25B5/04 ,  F25B41/04 ,  F25B41/062 ,  F25B2341/0662 ,  F25B2400/0403 ,  F25B2700/2117

    摘要： A climatic test system includes a test chamber adapted to hold a unit under test within the housing, and a refrigeration system that is adapted to cool air within the chamber. The refrigeration system includes a high stage, a low stage, and a cascade heat exchanger between said high and low stages. The low stage includes a refrigeration cycle having a low stage compressor, a low stage condenser, a low stage expansion device, and a low stage evaporator. The low stage evaporator is in heat exchange relationship with the chamber. The high stage includes a refrigeration cycle having a high stage compressor, a high stage condenser, and a cascade heat exchanger evaporator that is in heat exchange relationship with the low stage condenser, thereby defining the cascade heat exchanger. The high stage further has a first high stage expansion device supplying refrigerant from the high stage condenser to the cascade heat exchanger evaporator during cascade operation. The high stage further includes one or more additional high stage evaporator in heat exchange relationship with the test chamber and one or more additional high stage expansion device supplying refrigerant from the high stage condenser to the additional high stage evaporator(s) during single stage operation. A control controls operation of the refrigeration system in at least a single stage operation and a cascade operation. The additional high stage evaporator(s) is connected with the cascade heat exchanger evaporator wherein mass flowing through said at least one additional evaporator flows through the cascade heat exchanger evaporator.

    Space conditioning system with hot gas reheat, and method of operating the same
    4.
    发明授权
    Space conditioning system with hot gas reheat, and method of operating the same 有权

    公开(公告)号：US09964346B2

    公开(公告)日：2018-05-08

    申请号：US13460073

    申请日：2012-04-30

    申请人： Yi Hua

    发明人： Yi Hua

    IPC分类号： F25B41/04 ,  F25B49/02 ,  F24F3/153

    CPC分类号： F25B41/04 ,  F24F3/153 ,  F25B49/02 ,  F25B2400/0403

    摘要： A space conditioning system includes a hot gas reheat section and one or more modulating valves to direct a percentage of refrigerant flow to the hot gas reheat section. The hot gas reheat section includes multiple refrigerant circuits arranged in parallel. A control valve is used to allow the refrigerant to flow through selected ones of the multiple refrigerant circuits in response to the percentage of refrigerant flow directed to the hot gas reheat section, thereby varying the internal volume of the hot gas reheat section available to the refrigerant. Refrigerant charge hold-up within the hot gas reheat section can thereby be minimized.