Dual in-line valve construction

Details Dual in-line valve construction Dual in-line valve construction

1979-01-04

1980-04-01

King, Lloyd L.

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Plenum type

236 93R, 137220, 1376254, 13762549, G05D 2313

Patent

active

041957741

ABSTRACT:
Two fluid streams of different temperatures flow through two concentric pipes, the flow of each stream being modulated to achieve a desired mixture temperature. An in-line slide valve is interposed in one fluid flow path, and an in-line poppet valve is interposed in the other fluid flow path. A thermally responsive element is positioned downstream to sense the temperature of the mixed fluid stream, the element being connected via a rod to both the slide valve and the poppet. When the mixture temperature varies from a preselected temperature, the thermally responsive element moves the rod to gradually close the slide valve and open the poppet, or gradually close the poppet and open the slide valve, thereby changing the flow of both fluid streams and maintaining the desired mixture temperature.

REFERENCES:
patent: 2657860 (1953-11-01), Schmidt
patent: 3112879 (1963-12-01), Killias
patent: 3388861 (1968-06-01), Harding
patent: 3539099 (1970-11-01), Grohe
patent: 3561483 (1971-02-01), Taplin

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