Refrigerating apparatus

Details Refrigerating apparatus Refrigerating apparatus

1990-02-09

1991-04-02

Tanner, Harry B.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62126, 62128, 62155, F25B 4902, F25D 2106

Patent

active

050037862

ABSTRACT:
A refrigerating apparatus is conventionally provided with an electric which is fed with an electric current to effect heating and defrosting operations, a defrosting control device including a defrosting timer and an evaporator outlet refrigerant temperature detector for controlling the electric current fed to the electric heater, and an overheating preventing temperature detector for preventing the occurrence of abnormal overheating by the electric heater. The refrigerating apparatus of the present invention can regularly effect defrosting even if any anomaly should arise in the evaporator outlet refrigerant temperature detector. Specifically, the overheating preventing temperature detector is connected to the defrosting control device, and a detection temperature signal from either the evaporator outlet refrigerant temperature detector of the overheating preventing temperature detector is used to commence and terminate defrosting.

REFERENCES:
patent: 3102396 (1963-09-01), Laporte
patent: 3861167 (1975-01-01), Nijo
patent: 4530218 (1985-07-01), Janke et al.

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