Heat pump system

Details Heat pump system Heat pump system

1981-11-02

1983-07-26

Makay, Albert J.

Refrigeration

Automatic control

Refrigeration producer

62223, 623246, 1376253, F25B 4106

Patent

active

043948162

ABSTRACT:
A heat pump system comprising a compressor, two heat exchangers, and an expansion device. The expansion device defines two, spaced apart flow passages. A first piston is located in a first flow passage for metering refrigerant flow therethrough at a first flow rate, and a second piston is located in the second flow passage for metering refrigerant flow therethrough at a second flow rate less than the first flow rate. The expansion device includes a valve having a first position, closing the second flow passage to direct refrigerant through the first flow passage, and a second position, closing the first flow passage to direct refrigerant through the second flow passage.

REFERENCES:
patent: 2322658 (1943-06-01), Overbeke
patent: 2914925 (1959-12-01), Martin
patent: 3327760 (1967-06-01), Crawford, Jr.
patent: 3677028 (1972-07-01), Raymond
patent: 3992898 (1976-11-01), Duell et al.
patent: 4268291 (1981-05-01), Cann

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