Refrigeration unit

Details Refrigeration unit Refrigeration unit

1976-02-06

1977-07-05

Wayner, William E.

Refrigeration

Automatic control

Refrigeration producer

62213, 62526, G05D 2330

Patent

active

040337391

ABSTRACT:
A dual temperature refrigerator driven by a single compressor, having a refrigeration cycle provided with a condenser, a refrigerant metering device and refrigerant transfer lines with at least two evaporator sections connected in series with the first in a colder compartment and the second in a warmer compartment. Two separate, intermittantly activated control elements; one associated with the warmer compartment turns on a heater of a refrigerant collector causing refrigerant to discharge therefrom, and thereby to fill the evaporator of the warmer compartment, the second control element associated with the colder compartment is activated by a sensor in the colder compartment and in turn activates the compressor. The first control element indirectly activates the compressor by means of a second heating element which heats the sensor which in turn activates the second control element which in turn activates the compressor. As a result there is time delay which permits equalization of the pressure in the refrigeration machine before starting up the compressor.

REFERENCES:
patent: 2640327 (1953-06-01), Alsing
patent: 3105364 (1963-10-01), O'Connell
patent: 3508605 (1970-04-01), Zenji-Kusuda et al.
patent: 3950961 (1976-04-01), Lotz

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