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    SYSTEMS AND METHODS FOR TRANSITIONING BETWEEN A COOLING OPERATING MODE AND A REHEAT OPERATING MODE
    1.
    发明申请
    SYSTEMS AND METHODS FOR TRANSITIONING BETWEEN A COOLING OPERATING MODE AND A REHEAT OPERATING MODE 审中-公开

    公开(公告)号：US20200300484A1

    公开(公告)日：2020-09-24

    申请号：US16370208

    申请日：2019-03-29

    Applicant: Johnson Controls Technology Company

    Inventor： Norman J. Blanton ,  Stephen C. Wilson ,  Paul S. Willmus ,  Bradford G. Briley

    IPC: F24F3/153 ,  F24F11/00

    Abstract: A heating, ventilation, and/or air conditioning (HVAC) system, includes a cooling circuit, a reheat circuit, and a control system. The cooling circuit includes a condenser, a compressor, an evaporator, and a multi-directional valve, and the HVAC system is configured to circulate refrigerant through the cooling circuit in a cooling operating mode. The reheat circuit includes a reheat heat exchanger, the compressor, the evaporator, and the multi-directional valve, and the HVAC system is configured to circulate refrigerant through the reheat circuit in a reheat operating mode. The control system is configured to execute a switch between the cooling operating mode and the reheat operating mode by sending a signal to the multi-directional valve to adjust from a first position to a second position, interrupting a voltage provided to the compressor at a first time, and restoring application of the voltage to the compressor at a second time that is subsequent to the first time.

    Refrigerant leak management systems
    2.
    发明授权
    Refrigerant leak management systems 有权

    公开(公告)号：US10731884B2

    公开(公告)日：2020-08-04

    申请号：US16182287

    申请日：2018-11-06

    Applicant: Johnson Controls Technology Company

    Inventor： Norman J. Blanton

    IPC: F28F19/00 ,  F24F11/36 ,  F24F11/77 ,  F24F140/12

    Abstract: A refrigerant leak management system includes a controller is configured to receive a signal indicative of a refrigerant pressure within a refrigerant circuit and determine whether the refrigerant pressure is indicative of a refrigerant leak in the refrigerant circuit. In response to determining that the refrigerant pressure is indicative of the refrigerant leak, the controller is configured to activate a fan configured to motivate air proximate the refrigerant circuit.

    MULTI-CIRCUIT HVAC SYSTEM
    3.
    发明申请
    MULTI-CIRCUIT HVAC SYSTEM 审中-公开

    公开(公告)号：US20200149754A1

    公开(公告)日：2020-05-14

    申请号：US16206293

    申请日：2018-11-30

    Applicant: Johnson Controls Technology Company

    Inventor： Baskaran K ,  Karan Garg ,  Curtis W. Caskey ,  Norman J. Blanton ,  Anthony J. Reardon ,  Zhiwei Huang

    IPC: F24F3/153 ,  F25B41/04 ,  F25B39/04 ,  F25B49/02

    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.

    MODULATING REHEAT OPERATION OF HVAC SYSTEM
    6.
    发明申请
    MODULATING REHEAT OPERATION OF HVAC SYSTEM 有权

    公开(公告)号：US20210102738A1

    公开(公告)日：2021-04-08

    申请号：US16595136

    申请日：2019-10-07

    Applicant: Johnson Controls Technology Company

    Inventor： Norman J. Blanton ,  Zhiwei Huang

    IPC: F25B49/02 ,  F25B13/00 ,  F25B39/04

    Abstract: A heating, ventilation, and/or air conditioning (HVAC) unit includes a refrigerant circuit including a reheat coil and a condenser system, a first valve disposed along the refrigerant circuit and configured to modulate refrigerant flow to the reheat coil and to the condenser system, and a second valve disposed along the refrigerant circuit downstream of the first valve relative to a direction of the refrigerant flow through the refrigerant circuit. The condenser system includes a first condenser coil and a second condenser coil, and the second valve is configured to be actuated to control refrigerant flow to the second condenser coil.

    SYSTEMS AND METHODS FOR DELAYED FLUID RECOVERY
    7.
    发明申请
    SYSTEMS AND METHODS FOR DELAYED FLUID RECOVERY 审中-公开

    公开(公告)号：US20200208851A1

    公开(公告)日：2020-07-02

    申请号：US16252243

    申请日：2019-01-18

    Applicant: Johnson Controls Technology Company

    Inventor： Norman J. Blanton ,  Stephen C. Wilson ,  Paul S. Willmus

    IPC: F24F3/153 ,  F24F11/61 ,  F24F11/84

    Abstract: A heating, ventilation, and/or air conditioning (HVAC) system includes a cooling circuit, a reheat circuit, a recovery circuit, and a control system. The cooling circuit includes a condenser, a compressor, an evaporator, and a three-way valve, and the HVAC system is configured to circulate refrigerant through the cooling circuit in a cooling operating mode. The reheat circuit includes a reheat heat exchanger, the compressor, the evaporator, and the three-way valve, and the HVAC system is configured to circulate refrigerant through the reheat circuit in a reheat operating mode. The recovery circuit extends between the condenser and the compressor and includes a recovery valve. The control system is configured to send a first signal to the three-way valve to switch the HVAC system between the cooling operating mode and the reheat operating mode and a second signal to the recovery valve to recover refrigerant from the cooling circuit at a subsequent time based on the first signal.

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