Reversible valve for HVAC system
AssigneeJohnson Controls Light Commercial IP GmbH
InventorsRyan L. Snider, Nicholas P. Mislak, Karla D. Alvarez Cavazos
Life of this patent
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Abstract
A heating, ventilation, and/or air conditioning (HVAC) system includes a reversible valve having an outlet configured to direct refrigerant to a reheat heat exchanger of the HVAC system. The reversible valve is further configured to be in a first configuration to direct the refrigerant through a refrigerant circuit in a first flow direction in a heating mode of the HVAC system and to be in a second configuration to direct the refrigerant through the refrigerant circuit in a second flow direction in a cooling mode of the HVAC system.
Claims20
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a reheat heat exchanger disposed along a refrigerant circuit, wherein the reheat heat exchanger is configured to transfer heat from a refrigerant to an air flow in a heating mode of the HVAC system and in a cooling mode of the HVAC system;
- a reversible valve disposed along the refrigerant circuit, wherein the reversible valve is adjustable between a first configuration corresponding to the cooling mode and a second configuration corresponding to the heating mode, the reversible valve is configured to direct the refrigerant through the refrigerant circuit in a first flow direction in the first configuration and to direct the refrigerant through the refrigerant circuit in a second flow direction in the second configuration, wherein the reversible valve comprises a reheat port, and the reversible valve is configured to direct the refrigerant toward the reheat heat exchanger via the reheat port in the first configuration and in the second configuration;
- and
- a valve associated with the reheat port, wherein the valve is configured to adjust an amount of the refrigerant directed from the reversible valve to the reheat heat exchanger via the reheat port.
A heating, ventilation, and/or air conditioning (HVAC) system, comprising:
- a refrigerant circuit;
- a reheat heat exchanger disposed along the refrigerant circuit, wherein the reheat heat exchanger is configured to transfer heat from a refrigerant to an air flow directed through the HVAC system in a heating mode of the HVAC system and in a cooling mode of the HVAC system;
- and
- a reversing valve disposed along the refrigerant circuit, wherein the reversing valve is configured to adjust a flow direction of the refrigerant along the refrigerant circuit, and the reversing valve comprises:
- an inlet configured to receive the refrigerant from a compressor in the heating mode and in the cooling mode;
- an outlet configured to direct the refrigerant from the reversing valve toward the compressor in the heating mode and in the cooling mode;
- a reheat port configured to direct the refrigerant from the reversing valve toward the reheat heat exchanger in the heating mode and in the cooling mode;
- a first heat exchanger port configured to receive the refrigerant from a first additional heat exchanger disposed along the refrigerant circuit in the cooling mode and configured to direct the refrigerant from the reversing valve toward the first additional heat exchanger in the heating mode;
- and
- a second heat exchanger port configured to direct the refrigerant from the reversing valve toward a second additional heat exchanger disposed along the refrigerant circuit in the heating mode and configured to receive the refrigerant from the second additional heat exchanger in the cooling mode.
A heat pump configured to operate in a heating mode and in a cooling mode, wherein the heat pump comprises:
- a reheat heat exchanger configured to transfer heat from a refrigerant to an air flow supplied to a conditioned space in the heating mode and in the cooling mode;
- a first heat exchanger disposed upstream of the reheat heat exchanger, relative to flow of the air flow through the heat pump, wherein the first heat exchanger is configured to transfer heat between the refrigerant and the air flow;
- a second heat exchanger configured to transfer heat between the refrigerant and an ambient air flow;
- and
- a reversible valve comprising a first heat exchanger port fluidly coupled to the first heat exchanger, a second heat exchanger port fluidly coupled to the second heat exchanger;
- and a reheat port fluidly coupled to the reheat heat exchanger, wherein the reheat port is configured to discharge refrigerant from the reversible valve toward the reheat heat exchanger in the heating mode and in the cooling mode.
Dependencies are inferred from the claim text.