Method and apparatus for controlling the temperature and flow ra

Details Method and apparatus for controlling the temperature and flow ra Method and apparatus for controlling the temperature and flow ra

1985-08-27

1987-07-28

Wayner, William E.

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Mixing valve with temperature motive means

1376373, 236 78C, 364510, G05D 23185

Patent

active

046827285

ABSTRACT:
A method and apparatus for controlling the mixing of two fluids to form a mixed fluid, and the volume discharge rate of the mixed fluid. In a particular application, the two fluids are hot and cold water, and the mixing is controlled to effect temperature control of the mixed water. A specially-designed integral temperature control and volume control valve is included as part of the system. Operation of the valve is controlled by two stepper motors, which in turn are controlled by signals developed by a control unit. Means for setting a desired temperature and volume rate discharge, as well as means for displaying the set temperature and volume rate discharge, are also provided.

REFERENCES:
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patent: 3533444 (1970-10-01), Lyon
patent: 3957081 (1976-05-01), Dewavrin et al.
patent: 4286615 (1981-09-01), Stumpp et al.
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patent: 4328830 (1982-05-01), Greer
patent: 4328831 (1982-05-01), Wolff
patent: 4420811 (1983-12-01), Tarnay et al.
patent: 4421269 (1983-12-01), Ts'ao
patent: 4422619 (1983-12-01), Griffiths
patent: 4456031 (1984-06-01), Taplin

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