Low ambient operation of HVAC system

    公开(公告)号:US11009272B2

    公开(公告)日:2021-05-18

    申请号:US16274057

    申请日:2019-02-12

    Abstract: A heating, ventilation, and/or air conditioning (HVAC) system has a refrigerant circuit that includes a compressor, a condenser system with a first set of tubes and a second set of tubes fluidly separate from the first set of tubes within the condenser system, and a valve positioned downstream of the compressor and upstream of the second set of tubes relative to a direction of refrigerant flow through the refrigerant circuit, in which the refrigerant circuit is configured to direct refrigerant through the first set of tubes and through the second set of tubes. The HVAC system further has a switch configured to detect an operating parameter and to instruct the valve to close based on the operating parameter such that refrigerant flow is blocked through the second set of tubes and refrigerant flow is enabled through the first set of tubes.

    MULTI-CIRCUIT HVAC SYSTEM
    3.
    发明申请

    公开(公告)号:US20200149754A1

    公开(公告)日:2020-05-14

    申请号:US16206293

    申请日:2018-11-30

    Abstract: The present disclosure relates to a heating, ventilation, and/or air conditioning (HVAC) system that has a first circuit and a second circuit that each have a compressor and a condenser, a conduit extending from the second circuit downstream of the condenser to the first circuit upstream of the compressor, a valve along the conduit that may manage flow therethrough, and a controller that may operate the HVAC system in a first mode such that each circuit separately circulates the refrigerant in each circuit and transition to a second mode such that refrigerant-sharing occurs between the circuits. In response to a request to transition from the second mode to the first mode, the controller may determine an amount of refrigerant subcooling, compare the amount to a threshold value associated with the first mode, and instruct opening of the valve upon a determination that the amount is less than the threshold value.

    ADJUSTABLE MOTOR MOUNT
    8.
    发明申请

    公开(公告)号:US20210190334A1

    公开(公告)日:2021-06-24

    申请号:US16723293

    申请日:2019-12-20

    Abstract: A heating ventilation, and/or air conditioning (HVAC) system includes a support structure having a mounting rail, a first mounting bracket coupled to the mounting rail and configured to be adjustably positioned along a first axis of the mounting rail, and a second mounting bracket directly coupled to the first mounting bracket. The second mounting bracket is configured to support a fan motor mounted thereto, the second mounting bracket is configured to be adjustably positioned along a second axis of the first mounting bracket, and the second axis of the first mounting bracket is transverse to the first axis of the mounting rail.

    LOW AMBIENT OPERATION OF HVAC SYSTEM
    10.
    发明申请

    公开(公告)号:US20200240684A1

    公开(公告)日:2020-07-30

    申请号:US16274057

    申请日:2019-02-12

    Abstract: The present disclosure is directed to a heating, ventilation, and/or air conditioning (HVAC) system having a refrigerant circuit that includes a compressor, a condenser system with a first set of tubes and a second set of tubes fluidly separate from the first set of tubes within the condenser system, and a valve positioned downstream of the compressor and upstream of the second set of tubes relative to a direction of refrigerant flow through the refrigerant circuit, in which the refrigerant circuit is configured to direct refrigerant through the first set of tubes and through the second set of tubes. The HVAC system further has a pressure switch configured to detect a discharge pressure of the compressor and to instruct the valve to close based on the discharge pressure being below a threshold pressure such that refrigerant flow is blocked through the second set of tubes and refrigerant flow is enabled through the first set of tubes.

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