Means and techniques useful in detecting frost

Details Means and techniques useful in detecting frost Means and techniques useful in detecting frost

1985-03-20

1986-09-02

Tanner, Harry

Refrigeration

Automatic control

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

62156, F25D 2102

Patent

active

046088326

ABSTRACT:
In a heat pump system wherein an evaporator is located outdoors with a stream of air being blown through spaced fins of the evaporator and frost is formed on the fins thereby impairing the efficiency of the heat exchanger, heat flow sensing means is positioned on one or more of such fins and in heat conducting relation to such fins for the purpose of controlling defrost means such that when frost is formed the heat flow sensing means causes defrosting.

REFERENCES:
patent: 3861167 (1975-01-01), Nijo
patent: 4215554 (1980-08-01), Pohl
patent: 4291542 (1981-09-01), Sminge

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