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

F - Mech Eng,Light,Heat,Weapons

25

D

62/38

F25D 21/08 (2006.01) F25D 21/00 (2006.01)

Patent

CA 1158877

M-6650 METHOD AND MEANS CONTROLLING DEFROST CYCLES OF A COOLING UNIT ABSTRACT OF DISCLOSURE 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.

390252

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