Differing-temperature liquid-mixing apparatus and method using p

Details Differing-temperature liquid-mixing apparatus and method using p Differing-temperature liquid-mixing apparatus and method using p

1982-02-09

1984-04-24

Yuen, Henry C.

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Mixing valve with temperature motive means

236 1215, 137896, G05D 2300

Patent

active

044443579

ABSTRACT:
A method and apparatus for producing from two different liquid input streams which are at different temperatures, a single output stream with a selectable, low-thermal-noise, regulated temperature which is intermediate the input streams' temperatures. The invention operates with successive, recurrent, fixed-length operating cycles, during each of which a variable-length pulse of liquid from each stream, exclusively, is permitted to flow. Temperature monitoring of the resulting blended output stream effects continuous adjustment of the respective pulse-lengths (or duty cycles) of such alternate differing-temperature pulses to maintain the desired regulated temperature.

REFERENCES:
patent: 3021474 (1962-02-01), Byloff
patent: 3450022 (1969-06-01), Engel
patent: 3459407 (1969-08-01), Hazlehurst et al.
patent: 4165360 (1979-08-01), Casper et al.

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