Refrigeration – Automatic control – By congealed removable product condition
Patent
1978-12-26
1980-12-16
Wayner, William E.
Refrigeration
Automatic control
By congealed removable product condition
62158, 62233, F25C 100
Patent
active
042389305
ABSTRACT:
A slab-type ice maker apparatus wherein a slab of ice is formed on an inclined evaporator plate by the flowing of water over the upper surface of the refrigerated plate. A control is provided for sensing the temperature of the evaporator plate so as to determine when the thickness of the ice slab reaches a minimal preliminary thickness and continuing the ice slab formation for a preselected period of time subsequent to that determination to provide the completed final thickness slab. The thermally responsive sensing structure is mounted to the underside of the evaporator plate for improved sensing operation. The rate of flow of the water is reduced subsequent to the determination of the formation of the minimal thickness slab for improved efficiency in completing the formation of the final slab. Sensing structure is provided for determining the transfer of the ice slab to a slab dividing grid from the refrigerated plate. A subsequent ice making cycle is initiated a preselected period of time after termination of a previous ice making cycle notwithstanding a failure of the ice slab to move fully onto the dividing grid. The control requires a signal indicating the end of the ice forming cycle as well as a signal from the level sensing elements to effect a termination of the ice maker operation.
REFERENCES:
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Hogan Stephen J.
Nyland Roger L.
Wayner William E.
Whirlpool Corporation
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