Thermostatic expansion valve for refrigerating plants

Details Thermostatic expansion valve for refrigerating plants Thermostatic expansion valve for refrigerating plants

1991-12-11

1993-11-02

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

With pressure control

62225, G05D 2312

Patent

active

052577376

ABSTRACT:
The valve has a valve seat disposed in the fluid flow path between the inlet and outlet and a closure member adjustable relative to the valve seat by an actuating device. A valve actuating shaft which is connected to the closure member includes an adjustment element for selectively varying the effective length of the shaft. Further, a stop member is provided in the valve housing for adjustment in the direction of movement of the closure member to block the closing movement of the closure member toward the valve seat to prevent the closure member engaging the valve seat. This ensures that there is a permanently open flow path with an adjustable throttle resistance by which a minimum flow is maintained.

REFERENCES:
patent: 2484156 (1949-10-01), Dube et al.
patent: 3119449 (1964-01-01), Price
patent: 3478774 (1969-11-01), Noakes et al.
patent: 3731498 (1973-05-01), Beatembough et al.
patent: 4342421 (1982-08-01), Widdowson
patent: 4432492 (1984-02-01), Kunz

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