Five-way valve having simultaneous defrosting and heating functi

Details Five-way valve having simultaneous defrosting and heating functi Five-way valve having simultaneous defrosting and heating functi

1987-09-10

1988-08-02

King, Lloyd L.

Refrigeration

Reversible, i.e., heat pump

With flow control or compressor details

13762543, F25B 1300

Patent

active

047607092

ABSTRACT:
A five-way valve includes a cylindrical valve body. A piston member is employed in one end of the cylindrical valve body to define a high pressure chamber and a first pressure chamber. A defrosting valve is employed in the other end of the cylindrical valve body to define a second pressure chamber. A slider valve member coupled to the piston member is slidably employed within said high pressure chamber into which the high temperature and high pressure refrigerant from the compressor is induced. An electromagnetic valve is connected between both the first and second pressure converting chambers, and the inlet of the compressor. When the electromagnetic valve is energized to communicate the second pressure converting chamber with the inlet of the compressor, resulting in the generation of a pressure difference in the defrosting valve member, the defrosting valve member is actuated to pass the high temperature and high pressure refrigerant in the high pressure chamber to the inlet of the outdoor heat exchanger for the defrosting purpose, while the indoor heat exchanger is operated to heat ambient atmosphere.

REFERENCES:
patent: 2974682 (1961-03-01), Trask
patent: 2976701 (1961-03-01), Greenawalt
patent: 3867960 (1975-02-01), Hosoda et al.
patent: 3952537 (1976-04-01), Aoki et al.
patent: 4112974 (1978-09-01), Davis et al.
patent: 4306422 (1981-12-01), Korycki
patent: 4644760 (1987-02-01), Aoki et al.

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