Mixing valve

Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Having oscillating or reciprocating valve

Patent

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Details

236 1221, 251358, G05D 2313

Patent

active

046077880

ABSTRACT:
Disclosed is a valve for mixing hot and cold water consisting of a hollow body closed at one end and including an internal sleeve located by two annular flanges that define chambers between the sleeve and the body communicating, respectively, with hot and cold water inlets. Each chamber communicates with the interior of the sleeve by a radially directed passageway. A temperature actuated piston slides within the sleeve between a first valve seat formed by a face of a third annular flange extending inwardly of the sleeve above the cold water passageway to close the cold water passageway and leave the hot water passageway open and a second valve seat located at the bottom of the sleeve to close the hot water passageway and leave the cold water passageway open. The cold water passageway communicates directly with the mixing chamber formed in the sleeve and hot water passageway communicates with the mixing chamber via axial passageways formed in the piston. Movement of the piston between the first and second valve seats is limited to 0.5 mm. The top of the body is closed by a tap head which includes means for controlling the rate of flow of fluid through the outlet and means for regulating the temperature flow in the mixing chamber.

REFERENCES:
patent: 3119408 (1964-01-01), Patrick
patent: 3765604 (1973-10-01), Trubert et al.
patent: 3792812 (1974-02-01), Knapp
patent: 3827016 (1976-07-01), Knapp
patent: 3929283 (1975-12-01), Delpla
patent: 3955759 (1976-05-01), Knapp
patent: 4029256 (1977-06-01), Dauga
patent: 4164321 (1979-08-01), Riis

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