Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Mixing valve with temperature motive means
Patent
1983-09-06
1985-09-17
Schwadron, Martin P.
Automatic temperature and humidity regulation
Mixing fluid of dissimilar temperature
Mixing valve with temperature motive means
236 1221, 137490, 137606, 361161, 361203, G05D 2319
Patent
active
045415625
ABSTRACT:
The mixing valve includes a plurality of flow regulating assemblies (A) each of which independently regulates the flow of one of a plurality of fluids. Each flow regulating assembly includes a pressure displaceable structure (22) which is physically displaced by changes in pressure and a movable valving member (50) which is movable relative to a stationary valve seat (42) for adjusting the cross section of a flow path therebetween. The movable valving member is operatively connected with the pressure displaceable structure such that the cross section of the flow path varies generally in inverse proportion to the sensed pressure. A proportioning assembly (B) proportions back pressure from adjacent a mixed fluid outlet (132) between the flow regulating assemblies such that each flow regulating assembly regulates its fluid flow in accordance with the proportion of the back pressure accorded it. A mixed fluid selecting valve assembly (C) selectively connects the proportioning valve assembly with one of a plurality of mixed fluid outlets which have larger and smaller diameter sections to cause relatively low and high back pressures, hence, relatively high or low flow rates. A mixed fluid temperature control (D) monitors the temperature of the mixed fluid adjacent the mixed fluid outlet and controls the proportioning assembly to maintain the mixed fluid substantially at a selected temperature.
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Eaton Corporation
Schwadron Martin P.
Shay James R.
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