Hot gas bypass through four-way reversing valve

Details Hot gas bypass through four-way reversing valve Hot gas bypass through four-way reversing valve

2006-12-26

2006-12-26

Norman, Marc (Department: 3744)

Refrigeration

Automatic control

Selective heating or cooling

C062S196100, C062S196300

Reexamination Certificate

active

07152416

ABSTRACT:
A heat pump four-way valve selectively routes refrigerant to either indoor or outdoor heat exchanger. The position of the plunger inside the valve can also be adjusted to selectively provide a hot gas by-pass function by routing a portion of refrigerant from discharge to suction line. The four-way valve preferably is positioned such that it can either operate in a conventional heat pump mode, or can be positioned to perform an unloaded hot gas by-pass function.

REFERENCES:
patent: 2597729 (1952-05-01), Homeyer
patent: 2713250 (1955-07-01), Blatchford
patent: 2768506 (1956-10-01), Cain
patent: 4017286 (1977-04-01), English et al.
patent: 4441901 (1984-04-01), Endoh
patent: 4457137 (1984-07-01), Kohzuma

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