Heat pump including auxiliary outdoor heat exchanger acting as d

Details Heat pump including auxiliary outdoor heat exchanger acting as d Heat pump including auxiliary outdoor heat exchanger acting as d

1977-07-28

1979-10-23

Braun, Leslie

Refrigeration

Automatic control

Selective heating or cooling

62 81, 62278, 62324, 62526, F25B 1300, F25B 4700

Patent

active

041716221

ABSTRACT:
A heat pump including an indoor heat exchanger, a main outdoor heat exchanger and an auxiliary outdoor heat exchanger provided underneath the main outdoor heat exchanger and connected between the indoor and main outdoor heat exchangers in a closed refrigerant flow circuit. The refrigerant flow circuit includes a compressor and a reversal valve which can be adjusted (1) during cooling operation to direct the hot compressed gaseous refrigerant from the compressor to the main outdoor heat exchanger and thence to the auxiliary heat exchanger acting as a sub-cooler into the indoor heat exchanger for extracting heat from air of the interior of a building and (2) during heating operation to direct the hot compressed gaseous refrigerant to the indoor heat exchanger to supply heat to the indoor air and then to the auxiliary heat exchanger now acting as a defroster for melting a block of ice which may have accumulated under the main outdoor heat exchanger and into the main outdoor heat exchanger.

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patent: 2148415 (1939-02-01), Labberton
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patent: 3520147 (1970-07-01), Glackman
patent: 3529659 (1970-09-01), Trask
patent: 3869874 (1975-03-01), Ditzler
patent: 3977210 (1976-08-01), Bruguier
patent: 4057977 (1977-11-01), Chambless
patent: 4066118 (1978-01-01), Goettl

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