HEAT PUMP REFRIGERANT LOOP ARRANGEMENTS

    公开(公告)号:US20220410664A1

    公开(公告)日:2022-12-29

    申请号:US17357149

    申请日:2021-06-24

    Abstract: A heat pump includes a refrigerant loop. The refrigerant loop includes a compressor, a first condenser, a vapor generator having a first region and a second region, a first expansion valve, a second expansion valve, and a first evaporator. A branching point is positioned between the first condenser and the vapor generator. The branching point diverts a portion of a first heat exchange fluid circulating through the refrigerant loop to the vapor generator. The first expansion valve is positioned between the branching point and the vapor generator. An outlet of the vapor generator is coupled to a mid-pressure inlet port of the compressor.

    ENHANCED VEHICLE WINDOW ANTI-FOGGING STRATEGY

    公开(公告)号:US20210339604A1

    公开(公告)日:2021-11-04

    申请号:US17371853

    申请日:2021-07-09

    Abstract: A method for defogging a window of a vehicle includes steps of automatically selecting a climate control system operating mode and determining a risk of window fogging. The climate control system operating mode is selected from an outside air mode, an air-conditioning mode, and a defrost mode. A controller determines the risk of window fogging according to one or more inputs, and the same or a different controller may automatically select the climate control system operating mode. The controller is configured to increase a climate control system blower speed to increase a rate of airflow provided by the currently-actuated climate control system operating mode. The controller may sequentially advance the climate control system operating mode through the outside air mode, air-conditioning mode, and defrost mode.

    Vehicle HVAC system with auxiliary coolant loop for heating and cooling vehicle interior

    公开(公告)号:US11110777B2

    公开(公告)日:2021-09-07

    申请号:US16690622

    申请日:2019-11-21

    Abstract: A vehicle includes a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment. The HVAC system includes a refrigerant loop and a coolant loop, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment. The auxiliary coolant loop includes a pump for moving a coolant, within the auxiliary coolant loop, through a first heat exchanger coupled to the refrigerant loop via an expansion device, a second heat exchanger positioned within the passenger compartment, and a third heat exchanger coupled to the coolant loop. A flow control valve controls a flow of coolant to the third heat exchanger. The temperature of the coolant within the auxiliary coolant loop is controlled utilizing the flow valve and the pump. The first and third heat exchangers may be in parallel for controlling the movement of coolant there between to control temperature.

    Vehicle cabin and high voltage battery thermal management system

    公开(公告)号:US10814700B2

    公开(公告)日:2020-10-27

    申请号:US15927592

    申请日:2018-03-21

    Abstract: A vehicle thermal management system including an electric powertrain, a single thermal loop, and a controller is provided. The electric powertrain includes a high voltage battery. The single thermal loop is for managing thermal conditions of the high voltage battery and a vehicle cabin and may include a climate control system, a blower, and a front evaporator in fluid communication with the vehicle cabin. The controller is programmed to, responsive to detection of a climate control system off request, output a command to direct the blower to push air through a heater core to the vehicle cabin at a predetermined temperature such that a temperature within the vehicle cabin is maintained at a predetermined temperature and refrigerant continues to flow through the front evaporator. The system may include a vehicle cabin temperature sensor and an ambient temperature sensor, each in electrical communication with the controller.

    VEHICLE HVAC SYSTEM WITH AUXILIARY COOLANT LOOP FOR HEATING AND COOLING VEHICLE INTERIOR

    公开(公告)号:US20200086718A1

    公开(公告)日:2020-03-19

    申请号:US16690622

    申请日:2019-11-21

    Abstract: A vehicle includes a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment. The HVAC system includes a refrigerant loop and a coolant loop, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment. The auxiliary coolant loop includes a pump for moving a coolant, within the auxiliary coolant loop, through a first heat exchanger coupled to the refrigerant loop via an expansion device, a second heat exchanger positioned within the passenger compartment, and a third heat exchanger coupled to the coolant loop. A flow control valve controls a flow of coolant to the third heat exchanger. The temperature of the coolant within the auxiliary coolant loop is controlled utilizing the flow valve and the pump. The first and third heat exchangers may be in parallel for controlling the movement of coolant there between to control temperature.

    Vehicle HVAC system with auxiliary coolant loop for heating and cooling vehicle interior

    公开(公告)号:US10513166B2

    公开(公告)日:2019-12-24

    申请号:US14844109

    申请日:2015-09-03

    Abstract: A vehicle includes a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment. The HVAC system includes a refrigerant loop and a coolant loop, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment. The auxiliary coolant loop includes a pump for moving a coolant, within the auxiliary coolant loop, through a first heat exchanger coupled to the refrigerant loop via an expansion device, a second heat exchanger positioned within the passenger compartment, and a third heat exchanger coupled to the coolant loop. A flow control valve controls a flow of coolant to the third heat exchanger. The temperature of the coolant within the auxiliary coolant loop is controlled utilizing the flow valve and the pump. The first and third heat exchangers may be in parallel for controlling the movement of coolant there between to control temperature.

    ENHANCED VEHICLE WINDOW ANTI-FOGGING STRATEGY

    公开(公告)号:US20190143787A1

    公开(公告)日:2019-05-16

    申请号:US15813695

    申请日:2017-11-15

    Abstract: A method for defogging a window of a vehicle includes steps of determining a risk of window fogging and automatically selecting a climate control system operating mode according to that determined risk of window fogging. The climate control system operating mode is selected from: an outside air mode, an air-conditioning mode, and a defrost mode. A controller determines the risk of window fogging according to one or more inputs, and the same or a different controller may automatically select the climate control system operating mode.

    Vehicle HVAC system with combination heat exchanger for heating and cooling vehicle interior

    公开(公告)号:US10267546B2

    公开(公告)日:2019-04-23

    申请号:US14845461

    申请日:2015-09-04

    Abstract: A vehicle having a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment is provided. The vehicle may be described as including a CO2 loop positioned within an engine compartment, a coolant loop positioned at least partially within the passenger compartment, a first heat exchanger positioned within the engine compartment for transferring heat from a coolant within the coolant loop to a CO2 within the CO2 loop, a pump for moving the coolant within the coolant loop, a second heat exchanger within the coolant loop for heating or cooling an air temperature within the passenger compartment, and first and second valves for controlling movement of the coolant through the second heat exchanger and a heated coolant loop.

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