Method and means controlling defrost cycles of a cooling unit

Details Method and means controlling defrost cycles of a cooling unit Method and means controlling defrost cycles of a cooling unit

1981-04-27

1983-07-12

Makay, Albert J.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62155, 62234, F25D 2106

Patent

active

043923577

ABSTRACT:
The time between constant speed defrost cycles is shortened by monitoring the opening and closing of a door of a cooling unit. The control system for doing so includes cam means rotating at a constant speed and electrical switches responsive thereto, a ratchet with missing teeth coupled to the cam means, a pawl engaging the door and the ratchet.

REFERENCES:
patent: 2459083 (1949-01-01), McCloy
patent: 2737025 (1956-03-01), Soreng et al.
patent: 3518841 (1970-07-01), West, Jr.
patent: 3727015 (1973-04-01), Voland et al.

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