Automatic temperature and humidity regulation – Thermostatic – With pressure control
Patent
1983-06-21
1985-02-19
Tapolcai, William E.
Automatic temperature and humidity regulation
Thermostatic
With pressure control
62225, 137503, 137508, G05D 2700, F25B 4104
Patent
active
045000352
ABSTRACT:
An expansion valve has a refrigerant inlet passage, a refrigerant outlet passage, a valve chest to which both the passages open, a diaphragm chamber communicating with a heat-sensitive bulb through a tube of small diameter, and a valve body actuated in response to the operation of a diaphragm, the valve body being disposed facing a valve seat in the valve chest to regulate a passage defined between the valve seat and the valve body, to thereby control the flow rate of a refrigerant. The valve seat is adapted to be axially movable along the inner wall of the valve chest. In addition, means are provided for moving the valve seat in accordance with a change in pressure in the refrigerant circuit.
REFERENCES:
patent: 2538436 (1951-01-01), Weinberg
patent: 2938540 (1960-05-01), Schatzman et al.
patent: 2967403 (1961-01-01), Lange et al.
patent: 4032070 (1977-06-01), Nielsen
Atsumi Akira
Hatada Toshio
Ishibane Kyuhei
Kimura Hideyuki
Kuroda Shigeaki
Hitachi , Ltd.
Tapolcai William E.
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