Car air conditioner with a freezer/refrigerator

Details Car air conditioner with a freezer/refrigerator Car air conditioner with a freezer/refrigerator

1982-06-15

1984-11-20

Tanner, Harry B.

Refrigeration

Automatic control

Time or program actuator

62200, 62243, 62244, 62443, 165 43, G05D 2319, F25B 500, B60H 304, F25D 1102

Patent

active

044831510

ABSTRACT:
This invention provides a freezer/refrigerator system which has a compressor driven by an engine of a vehicle to equally supply a refrigerant under pressure to a cooler unit and a freezer/refrigerator unit. An electromagnetic valve is disposed in a refrigerant inlet pipe of the cooler unit, while a constant-pressure expansion valve which is opened at a given pressure corresponding to a proper vaporizing temperature of the refrigerant is disposed at the refrigerant inlet pipe of the freezer/refrigerator unit. A control circuit supplies a control signal to the electromagnetic valve which is opened for 1 minute and closed for 15 seconds. The refrigerant is alternately supplied to the cooler unit and the freezer/refrigerator unit upon opening/closing of the constant-pressure expansion valve in accordance with changes in the pressure of the refrigerant.

REFERENCES:
patent: 2128020 (1938-08-01), Smilack
patent: 2133962 (1938-10-01), Shoemaker
patent: 2328189 (1943-08-01), Brace et al.
patent: 2497903 (1950-02-01), Muffly
patent: 3858405 (1975-01-01), Manzke

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