Heat pump system

Details Heat pump system Heat pump system

1979-05-29

1980-12-23

King, Lloyd L.

Refrigeration

Reversible, i.e., heat pump

With product treatment

62324R, F25B 1300

Patent

active

042402697

ABSTRACT:
A heat pump system includes a compressor, indoor and outdoor coils and a four-way valve for automatically reversing refrigerant to provide cooling or heating mode of operation. Each coil has a plurality of heat transfer circuits arranged in series when the coil operates as a condenser, and in a parallel when the coil operates as an evaporator. A second four-way reversing valve is provided in the refrigerant circuit between outlets of indoor and outdoor coils to direct refrigerant through liquid lines of the refrigerant circuit from the outlet of one coil used as a condenser to the expansion means of the other coil used as an evaporator. The second four-way reversing valve is arranged in the refrigerant circuit to connect some of heat transfer circuits connected in parallel in each coil when it is used as an evaporator, to the suction line of the compressor.

REFERENCES:
patent: 2785540 (1957-03-01), Biehn
patent: 3132492 (1964-05-01), McGrath
patent: 3158006 (1964-11-01), Skeats et al.
patent: 4057975 (1977-11-01), del Toro
patent: 4057976 (1977-11-01), del Toro
patent: 4057977 (1977-11-01), Chambless
patent: 4171622 (1979-10-01), Yamaguchi et al.

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