Refrigeration circuit defrost system, method and components

Details Refrigeration circuit defrost system, method and components Refrigeration circuit defrost system, method and components

1979-09-13

1981-04-21

Capossela, Ronald C.

Refrigeration

Refrigeration producer

Compressor-condenser-evaporator circuit

62151, 62199, 62525, F25B 3902

Patent

active

042624967

ABSTRACT:
Apparatus and a method for operating a refrigeration system without reverse cycle defrost are disclosed. A heat exchanger is divided into a plurality of zones, one zone being constantly utilized as a subcooler to both defrost said zone and to subcool the refrigerant. The remaining zones of the heat exchanger are utilized as an evaporator as is known in the art. A selector valve which is capable of indexing liquid refrigerant flow between zones and receiving gaseous refrigerant from the remaining zones is also disclosed. Additionally, a header arrangement having both expansion means and a conduit controlled by check valve is utilized to direct refrigerant flow from the subcooled zones to the remaining zones of the heat exchanger which act as an evaporator.

REFERENCES:
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patent: 2198386 (1940-04-01), Heister et al.
patent: 2207260 (1940-07-01), Kuenzli
patent: 2221688 (1940-11-01), Gibson
patent: 2241060 (1941-05-01), Gibson
patent: 2637985 (1953-05-01), Ray
patent: 2969959 (1961-01-01), Kuhn et al.
patent: 3004399 (1961-10-01), Keller
patent: 3034528 (1962-05-01), Wharff, Jr.
patent: 3041845 (1962-07-01), Trask
patent: 3066496 (1962-12-01), Jokela
patent: 3103793 (1963-09-01), Kyle et al.
patent: 3103794 (1963-09-01), Kyle et al.
patent: 3116757 (1964-01-01), Donguy et al.

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