Expansion valve integrated with electromagnetic valve

Details Expansion valve integrated with electromagnetic valve Expansion valve integrated with electromagnetic valve

1998-12-15

2000-04-25

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

62225, F25B 4104

Patent

active

060534176

ABSTRACT:
In an expansion valve integrated with a electromagnetic valve, the expansion valve has an inlet refrigerant path for introducing refrigerant, a restriction path for decompressing and expanding the refrigerant, a valve element for adjusting an opening degree of the restriction path, a valve element operating unit, and an outlet refrigerant path for discharging the refrigerant. The outlet refrigerant path is opened or closed by the electromagnetic valve. When the electromagnetic valve is closed, the valve element operating unit closes the valve element in the restriction path, based on a refrigerant pressure in a space between a valve element of the electromagnetic valve and the restriction path. The space communicates with the inlet refrigerant path through a minute communication hole.

REFERENCES:
patent: Re26161 (1967-02-01), Leimbach et al.
patent: 2221062 (1940-11-01), Starr
patent: 5588590 (1996-12-01), Sakakibara et al.
patent: 5826438 (1998-10-01), Ohishi et al.

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