Air conditioning heat pump system having an initial frost monito

Details Air conditioning heat pump system having an initial frost monito Air conditioning heat pump system having an initial frost monito

1982-04-05

1984-04-03

Yuen, Henry C.

Refrigeration

Automatic control

Preventing, removing or handling atmospheric condensate

62282, F25D 2110

Patent

active

044399952

ABSTRACT:
The present invention relates to a self-contained air conditioning unit and more particularly to a control system having a plurality of sensing means wherein a frost monitoring control is initiated in combination with the outdoor fan in a selected outdoor heat exchanger surface temperature and outdoor ambient temperature range and frost present on the surface of the outdoor heat exchanger, and a second stage defrost initiated in combination with an auxiliary heater at a below preselected temperature.

REFERENCES:
patent: 2001027 (1935-05-01), Kitzmiller
patent: 2178807 (1939-11-01), Ploeger
patent: 2525869 (1950-10-01), Corhanidis
patent: 2947153 (1960-08-01), Atchison
patent: 3115017 (1963-12-01), Kocher et al.
patent: 3466888 (1969-09-01), Kyle
patent: 4086779 (1978-05-01), Lewis
patent: 4102391 (1978-07-01), Noland et al.
patent: 4245482 (1981-01-01), Abraham
patent: 4338790 (1982-07-01), Saunders et al.
patent: 4373350 (1983-02-01), Noland

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