Cryopump or heat pump circuit

Details Cryopump or heat pump circuit Cryopump or heat pump circuit

1982-09-13

1984-07-24

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62210, 62225, G05D 2330, F25B 4100

Patent

active

044616350

ABSTRACT:
The invention relates to a cryopump or heat pump circuit having in series a compressor, a condenser, an expansion valve and an evaporator. The expansion valve is controlled as normally by a sensor which is responsive to the superheating of refrigerant at the outlet of the evaporator. In order to assure sufficient dryness of the evaporator output to make the expansion valve operative, the sensor is connected to a heat source which generates a sufficient amount of heat so that the sensor assumes a temperature corresponding to the set superheating.

REFERENCES:
patent: 2296680 (1942-09-01), McLenegan
patent: 3715893 (1973-02-01), Werner
patent: 3735603 (1973-05-01), Hamilton

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