Refrigeration – Automatic control – By congealed removable product condition
Patent
1975-06-23
1976-07-13
Wayner, William E.
Refrigeration
Automatic control
By congealed removable product condition
62138, F25C 112
Patent
active
039690970
ABSTRACT:
A slab type ice maker including an inclined refrigerated plate assembly is associated with a mechanically driven refrigerant compressor to cool the plate below freezing during an ice making cycle of operation whereby water circulated thereover by means of a motor driven pump will produce an ice slab thickness on the plate which is removed therefrom during a hot gas defrost harvest cycle of operation to be directed onto a heated grid for separation into individual cubes which are collected in a storage bin having a bin level thermostat therein that operates when the bin is filled to terminate machine operation. A control circuit associated with the bin level thermostat switch includes a bimetallic thermostat associated with the bin switch to maintain the machine operative after bin fill to assure completion of a desired ice slab thickness on the plate assembly and further includes means to establish a hot gas defrost operation which is terminated by the bimetallic thermostat sensing flow of hot defrost gas to produce a time delay control of hot gas harvest of the slab with subsequent complete termination of machine operation when the bin is filled with ice.
REFERENCES:
patent: 2784563 (1957-03-01), Baker
patent: 3859813 (1975-01-01), Canter
Evans J. C.
General Motors Corporation
Wayner William E.
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