HEATING VENTILATION AND COOLING SYSTEM FOR A VEHICLE

    公开(公告)号:US20230249515A1

    公开(公告)日:2023-08-10

    申请号:US17592586

    申请日:2022-02-04

    CPC classification number: B60H1/00764 B60H1/00849 B60H1/00828

    Abstract: A method of operating a stop-start vehicle with an HVAC system that does not include an electric auxiliary coolant pump for circulating warm coolant to a heater core of the HVAC system in an engine-off condition of the vehicle comprises the steps of driving the vehicle via compulsion by an engine in an environment having an ambient outside temperature of about or less than 30 degrees Fahrenheit, entering an auto stop event, such that the engine enters the engine-off condition, and circulating heated air into a cabin of the vehicle in the engine-off condition for at least one minute. The heated air is circulated by decreasing the speed of a blower motor, adjusting a recirculation door position to increase air recirculation, and adjusting a temperature blend door position toward a full-heat position based on a sensed engine coolant temperature and a sensed evaporator core temperature.

    Vapor injection heat pump and control method

    公开(公告)号:US11254190B2

    公开(公告)日:2022-02-22

    申请号:US16444665

    申请日:2019-06-18

    Abstract: A refrigerant loop of a vapor injection heat pump includes a compressor, first and second expansion valves, and first and second separator valves. The separator valves allow an entire refrigerant flow to pass therethrough or operate to separate vapor and liquid components of expanded refrigerant and inject the vapor component into a suction port of the compressor. Vapor injection occurs in both heating and cooling modes of operation and may depend upon an ambient condition (e.g., high or low ambient temperatures). An accumulator receives an output refrigerant of the heat exchangers dependent upon the mode and directs a vapor component into another suction port of the compressor. A control module controls at least the first and second expansion valves and first and second separator valves dependent upon the mode of operation which include, among others, heating, cooling, and dehumidification and re-heating.

    VAPOR INJECTION HEAT PUMP SYSTEM AND CONTROLS

    公开(公告)号:US20210155078A1

    公开(公告)日:2021-05-27

    申请号:US16695427

    申请日:2019-11-26

    Abstract: A vehicle HVAC system includes a compressor, a first heat exchanger for exchanging heat between the refrigerant outside air, a first check valve set, a first expansion device for decompressing a first portion of the refrigerant, a second heat exchanger for exchanging heat between the first portion of the refrigerant and a second portion of the refrigerant, a second expansion device for decompressing the second portion of the refrigerant, a second check valve set, a third heat exchanger for exchanging heat between the refrigerant and inside air, and a selector valve for switching between a heating mode and a cooling mode. The first check valve set and the second check valve set together maintain a constant flow direction through the first expansion device, the second heat exchanger, and the second expansion device between the heating mode and the cooling mode.

    INTEGRATED HEAT PUMP BUNDLED MODULE MOUNTING MANIFOLD

    公开(公告)号:US20210086587A1

    公开(公告)日:2021-03-25

    申请号:US16577613

    申请日:2019-09-20

    Abstract: A vehicle HVAC system including a heat pump system. The heat pumps system including a refrigerant module mounting manifold, the manifold including a first plate and a second plate. The first plate and the second plate are configured to couple together such that together they define a plurality of channels for directing the flow of refrigerant through the heat pump system. One or more auxiliary modules are fluidly coupled to the refrigerant module mounting manifold.

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