Vapor compression system with defrost system

Details Vapor compression system with defrost system Vapor compression system with defrost system

F - Mech Eng,Light,Heat,Weapons

25

B

F25B 41/04 (2006.01) F25B 47/02 (2006.01) F25B 49/02 (2006.01)

Patent

CA 2525360

A vapor compression system including a circuit having operably coupled thereto, in serial order, a compressor, an interior heat exchanger, a second heat exchanger, an expansion device, an exterior heat exchanger, and an accumulator. A first bypass line extends from circuit between interior exchanger and second exchanger to between expansion device and third exchanger. A second bypass line extends from circuit between the exterior exchanger and accumulator to accumulator, and is operably coupled to second exchanger. A bypass expansion device is operably coupled to second bypass line. A first valve is coupled to first bypass line, and a second valve is coupled to second bypass line. During a defrost cycle first valve is in a first position wherein refrigerant flowing from interior exchanger flows to exterior exchanger through first bypass line, and second valve is in a second position wherein refrigerant flowing from exterior exchanger flows through second bypass line.

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