Laundry machine improved water temperature control and method

Details Laundry machine improved water temperature control and method Laundry machine improved water temperature control and method

1977-10-03

1979-04-03

Wayner, William E.

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Having oscillating or reciprocating valve

68 12R, 134 57R, 137 90, G05D 1116

Patent

active

041472977

ABSTRACT:
A temperature sensing system for controlling the temperature of fill water in an automatic washer having an inlet hot water valve and an inlet cold water valve. The inlet hot water valve is continuously open during fill and the inlet cold water valve is normally closed during fill. A first predetermined temperature level of the incoming hot water is sensed and also a second predetermined level of incoming hot water is sensed, the second temperature level being lower than the first temperature level. A switch is provided to bypass the sensing of the second predetermined temperature level of the incoming hot water. This switch allows the user of the clothes washer to preselect either of two water temperature levels desired. When both the inlet hot water temperature is above the first temperature level and the sensing of the second temperature level is bypassed, the cold water valve is opened by a control. The control will also open the cold water valve when the second temperature sensing is not bypassed and the hot water temperature is above the second temperature level.

REFERENCES:
patent: 1022189 (1912-04-01), Geissinger
patent: 1720723 (1929-07-01), Dodge
patent: 2533624 (1950-12-01), Ray
patent: 2844321 (1958-07-01), Witherspoon, Jr.
patent: 3917165 (1975-11-01), Cross
patent: 3948441 (1976-04-01), Perkins et al.
patent: 4002292 (1977-01-01), Parks

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