Air mixing valve having a thermal motor actuator for effecting a

Details Air mixing valve having a thermal motor actuator for effecting a Air mixing valve having a thermal motor actuator for effecting a

1974-09-03

1976-07-06

Nilson, Robert G.

Automatic temperature and humidity regulation

Ventilator type

137601, 137607, 236 13, 236 68R, 251 11, F24F 1304

Patent

active

039677796

ABSTRACT:
A mixing valve for mixing airstreams in an air distributing system including a housing having first and second air inlet passages therein for receiving respective airstreams of different characteristics, valve means cooperating with the first and second inlet passages for adjustably selecting the proportion of air received through the respective passages so as to obtain a mixture of the two airstreams from the mixing valve, and an actuator cooperating with the valve means for effecting adjustment of the same to obtain a desired mixture of the different airstreams from the mixing valve. The actuator includes a thermal motor having an axially movable shaft extending therefrom, a heater cooperating with the thermal motor for applying heat thereto to effect movement of the motor shaft toward an extended axial position, and linkage operably interconnecting the thermal motor and the valve means and being movable in response to axial movement of the motor shaft for effecting adjustment of the valve means.

REFERENCES:
patent: 2235023 (1941-03-01), Komroff et al.
patent: 2257007 (1941-09-01), Harris
patent: 2330725 (1943-09-01), McGrath
patent: 2331476 (1943-10-01), Jones
patent: 2794598 (1957-06-01), Waterfill
patent: 3004710 (1961-10-01), Couffer, Jr. et al.
patent: 3050601 (1962-08-01), Bohn
patent: 3059417 (1962-10-01), Sherwood
patent: 3257931 (1966-06-01), Lupton
patent: 3298658 (1967-01-01), Alyea

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