Automatic temperature and humidity regulation – Thermostatic – With pressure control
Patent
1985-09-10
1986-12-30
Wayner, William E.
Automatic temperature and humidity regulation
Thermostatic
With pressure control
62210, 62225, F25B 4104
Patent
active
046323058
ABSTRACT:
An expansion valve associated with an evaporator in a refrigerating system comprises a valve housing; a closure cap secured to the valve housing; a diaphragm assembly which is disposed in the valve housing and includes a first and a second diaphragm members which are spaced from each other to define a first working chamber therebetween, the diaphragm assembly cooperating with the closure cap to define a second working chamber therebetween, and the first diaphragm member being affected by a refrigerant pressure; a remote sensing bulb; a capillary tube communicating the second working chamber to said bulb; a working gas for moving the diaphragm assembly; a spring urging the first diaphragm member on against the movement of the diaphragm assembly towards the spring; a valve element moved by a difference between the forces caused by the spring and the diaphragm assembly movement; and an inert gas filling the first working chamber with a pressure level higher than a pressure level caused by the spring against the diaphragm assembly.
REFERENCES:
patent: 2140947 (1938-12-01), Andersson et al.
patent: 2363451 (1944-11-01), Stockestrom
patent: 2368592 (1945-01-01), Dillman
patent: 2472149 (1949-06-01), Dillman
patent: 2487946 (1949-11-01), Senn
patent: 2701451 (1955-02-01), Candor
patent: 2711184 (1955-06-01), Ehlke
patent: 2752457 (1956-06-01), Matthews
patent: 2971348 (1961-02-01), Orth
patent: 3534611 (1970-10-01), Hilgert
patent: 4158437 (1979-06-01), Nielsen
Nippondenso Co. Ltd.
Wayner William E.
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