Automatic temperature and humidity regulation – Mixing fluid of dissimilar temperature – Having oscillating or reciprocating valve
Patent
1989-04-14
1992-04-28
Tapoical, William E.
Automatic temperature and humidity regulation
Mixing fluid of dissimilar temperature
Having oscillating or reciprocating valve
13762541, 13762547, 366340, G05D 2313
Patent
active
051080320
ABSTRACT:
A fluid mixing valve designed for hot/cold water mixing in showers provides fully adjustable proportioning independent of flow rate. It may be thermostat controlled for convenience, and to save water by avoiding iterative manual adjustment. It comprises a rotor enclosed in a fitted case, the case having adjacent fluid inlets and an elongated outlet. The rotor has a throat, one end of which registers with the inlets in varying proportion depending on the position of the rotor. A linkage arm within the elongated outlet connects between the rotor and a control shaft. This arm transmits control movements from shaft to rotor, and is also the thermostatic element. Hydrodynamic forces are neutral against the rotational moment of the rotor, avoiding rotor oscillation. Damping means are described. Mixing occurs immediately in the throat, and is completed prior to the thermostat. This valve is expected to be used with a downstream flow valve.
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