Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Having oscillating or reciprocating valve
Patent
1976-04-05
1977-08-02
Camby, John J.
Automatic temperature and humidity regulation
Mixing fluid of dissimilar temperature
Having oscillating or reciprocating valve
236 93B, 137 98, G05D 2300, G05D 1116
Patent
active
040391256
ABSTRACT:
A valving device for inclusion in a pair of lines delivering hot and cold water to a point of mixed flow use having respective flow valving sections including respective aligned valving members joined as a shuttle unit, secured to and extending through flexible diaphragm means isolating the sections, and longitudinally shiftable to decrease flow area in one section while increasing flow area in the other; each section having a flow constriction as a fixed resistance between the diaphragm means and a respective valved flow space, whereby upon change of the relation of supply pressure and consequent tendency to change flow ratio from a pre-existing relation, the shuttle shifts to null the difference of forces acting thereon in the two sections and thereby re-establish the flow ratio; a hot inlet temperature responsive override being includable. A valve housing, with respective hot and cold inlets and outlets to a main housing bore, receives a cartridge, generally cylindrical, threaded and O-ring sealed thereto; the cartridge containing and providing a bore for the valving sections, diaphragm means, the shuttle unit, the constrictions, the valving areas, and passages to the housing inlets and outlets; and thermal override.
REFERENCES:
patent: 2009102 (1935-07-01), Bern
patent: 2090843 (1937-08-01), King
patent: 2778373 (1957-01-01), Jaquith
patent: 3116748 (1964-01-01), Wasson
patent: 3324872 (1967-06-01), Cloud
patent: 3921658 (1975-11-01), Botnick
Camby John J.
Golrick P. D.
Yuen Henry C.
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