Heat pump control/defrost circuit

Details Heat pump control/defrost circuit Heat pump control/defrost circuit

1981-07-09

1983-02-15

Makay, Albert J.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

165 29, F25D 2106

Patent

active

043733506

ABSTRACT:
The present invention relates to a self-contained air conditioning unit including a reversible refrigeration system and more particularly to a control system having a plurality of sensing means that are effective in maintaining operation of the unit in a heat pump mode when the ambient and the surface temperature of selected refrigeration components are above a preselected frosting temperature, and to energize a heating means to provide uninterrupted heating when the ambient and surface temperatures sensed are below a preselected frosting level which terminates compressor operation.

REFERENCES:
patent: 3159981 (1964-12-01), Huskey
patent: 3170305 (1965-02-01), Dibble et al.
patent: 3261395 (1966-07-01), Foster et al.
patent: 3348607 (1967-10-01), Cootey
patent: 3466888 (1969-09-01), Kyle
patent: 4024722 (1977-05-01), McCarty
patent: 4101391 (1978-07-01), Noland et al.

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