Frost detecting device for a refrigeration apparatus

Details Frost detecting device for a refrigeration apparatus Frost detecting device for a refrigeration apparatus

1975-03-26

1976-06-08

Wayner, William E.

Refrigeration

Automatic control

By accumulation on freezing surface, e.g., ice

250341, 340234, F25D 2102

Patent

active

039614956

ABSTRACT:
The frost detecting device disclosed herein is adapted to be used in a refrigeration apparatus of the type having refrigerant-carrying coils equipped with fins. The device includes a support to be fixedly mounted to the fins, infrared radiation emitting means mounted to the support, radiation sensitive means also mounted to the support in spaced coaxial relationship with the emitting means, and control circuit means electrically connected to the emitting means and to the sensitive means for detecting an unacceptable amount of frost on the fins to then actuate a defrosting system associated with the refrigeration apparatus.

REFERENCES:
patent: 2849617 (1958-08-01), Karasek
patent: 2866900 (1958-12-01), Busignies et al.
patent: 3120108 (1964-02-01), Pansing
patent: 3188828 (1965-06-01), Wayne

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