Refrigerator temperature and defrost control

Details Refrigerator temperature and defrost control Refrigerator temperature and defrost control

1985-09-30

1987-05-12

Tanner, Harry

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62227, F25D 2106

Patent

active

046639411

ABSTRACT:
A refrigerator temperature and defrost control according to the present invention includes means for sensing the temperature of a portion of cooling means within the refrigerator, means for determining when a particular frost load has accumulated on the portion of the cooling means, means coupled to the determining means for energizing defrost means for de-icing the portion of the cooling means when the particular frost load has accumulated and means coupled to the sensing means for de-energizing the defrost means when at least a portion of the frost load has been removed and for energizing the cooling means when the temperature of the portion thereof reaches a predetermined temperature during the time the defrost means is de-energized. The temperature and defrost control of the present invention makes multiple use various components thereof to reduce the cost and complexity of the control and to increase the effectiveness thereof.

REFERENCES:
patent: 3483919 (1969-12-01), Wakai et al.
patent: 3553975 (1971-01-01), Sakamoto
patent: 3961495 (1976-06-01), Beauvent et al.
patent: 4162036 (1979-07-01), Balduzzi et al.
patent: 4294081 (1981-10-01), Mitani et al.
patent: 4327557 (1982-05-01), Clarke et al.
patent: 4354547 (1979-10-01), Sugiura
patent: 4433555 (1984-02-01), Thorsen

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