Combined cooling plant/heat pump circuit

Details Combined cooling plant/heat pump circuit Combined cooling plant/heat pump circuit

2007-05-15

2007-05-15

Jones, Melvin (Department: 3744)

Refrigeration

Reversible, i.e., heat pump

C062S324600

Reexamination Certificate

active

10794102

ABSTRACT:
The invention relates to a combined plant/heat pump circuit with a compressor, a multi-way valve arranged downstream, an external heat exchanger as well as an interior heat exchanger and an internal heat exchanger. A multi-way valve is integrated into the refrigerant circuit such that a line loop is created in which one after the other the internal heat exchanger and an expansion element passable in one direction are arranged and such that the internal heat exchanger is always at the high pressure level and the internal heat exchanger is always at the low pressure level of the refrigerant circuit thereby avoiding the condensation of the refrigerant in the internal heat exchanger in heat pump operation.

REFERENCES:
patent: 2460774 (1949-02-01), Trautman
patent: 3490338 (1970-01-01), Faust et al.
patent: 3985154 (1976-10-01), Hargraves
patent: 4255939 (1981-03-01), Ou
patent: 4290453 (1981-09-01), Bauer
patent: 4938032 (1990-07-01), Mudford
patent: 4966194 (1990-10-01), Nakatsukasa et al.
patent: 5375427 (1994-12-01), Hara et al.
patent: 5689962 (1997-11-01), Rafalovich
patent: 5709102 (1998-01-01), Fukumoto et al.
patent: 5819551 (1998-10-01), Fukumoto et al.

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