Evaporation pressure control device

Details Evaporation pressure control device Evaporation pressure control device

1977-02-09

1978-12-19

King, Lloyd L.

Refrigeration

Automatic control

Refrigeration producer

62239, 137494, 13750513, F25B 4104, B60H 304, F16K 3112, F16K 3136

Patent

active

041299957

ABSTRACT:
In a refrigeration cycle of an air conditioning system of the type, in which lubricating oil for lubricating a compressor circulates through the refrigeration cycle together with refrigerant, an evaporation pressure control device is provided between an evaporator and the compressor for not only controlling the amount of refrigerant circulating through the refrigeration cycle in response to the pressure of the refrigerant out of the evaporator, but permitting the refrigerant to return to the compressor when the pressure of the refrigerant out of the evaporator is extremely decreased owing to the leakage of the refrigerant, whereby seizure of the compressor can be prevented.

REFERENCES:
patent: 1406216 (1922-02-01), Olson
patent: 1768602 (1930-07-01), Hull
patent: 1907162 (1933-05-01), Webb
patent: 2854025 (1958-09-01), Terry
patent: 3123094 (1964-03-01), Toschkoff
patent: 3899897 (1975-08-01), Boerger et al.

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