Textiles: fluid treating apparatus – Machines – Single tub and automatic sequential operation mechanism
Patent
1990-01-29
1992-01-28
Coe, Philip R.
Textiles: fluid treating apparatus
Machines
Single tub and automatic sequential operation mechanism
68 1202, D06F 3302
Patent
active
050834479
ABSTRACT:
A washing machine includes an optical sensor for detecting a light permeability of detergent solution and rinse water in a washer tank. The optical sensor includes a light emitting element and a light receiving element. A microprocessor is provided for controlling a luminous intensity of the light emitted from the light emitting element. More specifically, the microprocessor sets the luminous intensity of the light emitting element such that an intensity of the light detected by the light receiving element is equal to or greater than a stored reference value during at least one of two operating states. The first of the two operating states is a state in which water is absent from the water tank. A second of the two operating states is a state in which water is present in the water tank and prior to agitation of the water in the water tank. Various processing cycles of the washing machine are carried out in accordance with the light permeability detected by the optical sensor.
REFERENCES:
patent: 4222250 (1980-09-01), Torita
patent: 4372134 (1983-02-01), Matsuo
patent: 4653294 (1987-03-01), Akinaga
Imahashi Hisayuki
Kiuchi Mitsuyuki
Matsui Shoichi
Coe Philip R.
Matsushita Electric - Industrial Co., Ltd.
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