Method and apparatus for charge compensator reheat valve
A heating, ventilation, and air conditioning (“HVAC”) system includes an evaporator coil and a compressor fluidly coupled to the evaporator coil via a suction line. A condenser coil is fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line. A charge compensator is fluidly coupled to the liquid line via a connection line. A charge compensator re-heat valve is disposed in the connection line.
1. A heating, ventilation, and air conditioning (“HVAC”) system comprising:
an evaporator coil;
a compressor fluidly coupled to the evaporator coil via a suction line;
a condenser coil fluidly coupled to the compressor via a discharge line and fluidly coupled to a metering device via a liquid line;
a charge compensator fluidly coupled to the liquid line via a connection line;
a charge compensator re-heat valve disposed in the connection line; a check valve disposed in the connection line in parallel with the charge compensator re-heat valve; and
wherein a first end of the charge compensator re-heat valve is connected to the liquid line via the connection line and a second end of the charge compensator re-heat valve is connected to the charge compensator.
2. The HVAC system of claim 1 , comprising a flow-directing device fluidly coupled to the discharge line and fluidly coupled to a re-heat coil.
3. The HVAC system of claim 2 , comprising an HVAC controller electrically connected to the flow-directing device and the charge compensator re-heat valve.
4. The HVAC system of claim 3 , wherein the charge compensator re-heat valve is electrically coupled to the HVAC controller in parallel with the flow-directing device.
5. The HVAC system of claim 3 , wherein the charge compensator re-heat valve is in a closed position when the HVAC system operates in the re-heat mode.
6. The HVAC system of claim 1 , wherein the HVAC system operates in at least one of a cooling mode and a re-heat mode.
7. The HVAC system of claim 6 , wherein when operating in the re-heat mode, a flow-directing device directs refrigerant from the compressor to the re-heat coil.
8. The HVAC system of claim 1 , wherein the condenser coil comprises a plurality of micro channels.
9. The HVAC system of claim 1 , wherein:
the check valve facilitates draining of the charge compensator when the HVAC system is operating in a re-heat mode and the charge compensator re-heat valve is in a closed position; and
the check valve permits flow of refrigerant from the charge compensator into the liquid line and prevents flow of refrigerant from the liquid line into the charge compensator.
10. A condenser coil, comprising:
a plurality of micro channels;
a liquid line coupled to the plurality of micro channels;
a charge compensator fluidly coupled to the liquid line via a connection line;
a charge compensator re-heat valve disposed in the connection line;
a check valve disposed in the connection line in parallel with the charge compensator re-heat valve; and
wherein a first end of the charge compensator re-heat valve is connected to the liquid line via the connection line and a second end of the charge compensator re-heat valve is connected to the charge compensator.
11. The condenser coil of claim 10 , wherein the charge compensator re-heat valve is electrically coupled to an HVAC controller.
12. The condenser coil of claim 10 , wherein the check valve permits flow of refrigerant from the charge compensator into the liquid line and prevents flow of refrigerant from the liquid line into the charge compensator.
13. The condenser coil of claim 10 , wherein the check valve facilitates draining of the charge compensator when the charge compensator re-heat valve is in a closed position.
14. The condenser coil of claim 10 , wherein the charge compensator re-heat valve is a solenoid ball valve.
15. A method for operating a charge compensator, the method comprising:
fluidly coupling a charge compensator to a liquid line, the liquid line being fluidly coupled to a condenser coil;
arranging a charge compensator re-heat valve in a connection line coupling the liquid line and the charge compensator;
arranging a check valve in the connection line in parallel with the charge compensator re-heat valve;
operating an HVAC system in a re-heat mode;
signaling, via an HVAC controller, a charge compensator re-heat valve to move to a closed position responsive to the HVAC system operating in the re-heat mode; and
wherein a first end of the charge compensator re-heat valve is connected to the liquid line via the connection line and a second end of the charge compensator re-heat valve is connected to the charge compensator.
16. The method of claim 15 , comprising electrically coupling the charge compensator re-heat valve to an HVAC controller in parallel with a flow-directing device.
17. The method of claim 15 , wherein:
the check valve is arranged to permit refrigerant flow from the charge compensator to the liquid line and prevent refrigerant flow from the liquid line into the charge compensator; and
the check valve is arranged to permit drainage of refrigerant from the charge compensator when the charge compensator re-heat valve is in the closed position.
18. The method of claim 15 , wherein the signaling occurs after a pre-determined period of time after the HVAC system begins operation in the re-heat mode.