Refrigeration equipment, particularly household refrigeration or

Details Refrigeration equipment, particularly household refrigeration or Refrigeration equipment, particularly household refrigeration or

1977-03-29

1978-12-19

Wayner, William E.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62140, 307203, F25D 2100

Patent

active

041299930

ABSTRACT:
Refrigeration equipment, particularly a household refrigerator or the like, having a heat-insulated refrigeration chamber and a refrigeration unit which can be switched-on intermittently by a temperature-dependent control and the heat exchanger of which, arranged in the refrigeration chamber, can be defrosted between the cooling periods through the supply of thermal energy and/or natural incidence of heat from the environment of the refrigeration equipment, the control being equipped with two sensors, one of which measures the air temperature in the refrigeration chamber and the other, the temperature at the heat exchanger. The sensors have their switching functions coupled by a mutually interlocking electronic circuit in which the switching function activated by the temperature at one sensor must run down completely before the switching function activated at the other sensor is set in motion. Proper defrosting of the heat exchanger is ensured and the temperature in the refrigeration chamber is kept constant independent to a large extent of the ambient temperature.

REFERENCES:
patent: 3222882 (1965-12-01), Sutton, Jr. et al.
patent: 3963947 (1976-06-01), Bogel
patent: 4039855 (1977-08-01), Callan et al.
Transistor Manual; 1964, G.E., pp. 199, 200.

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