Dishwasher with turbidity sensing mechanism

Details Dishwasher with turbidity sensing mechanism Dishwasher with turbidity sensing mechanism

1995-01-10

1996-12-24

Coe, Philip R.

Cleaning and liquid contact with solids

Apparatus

Automatic controls

68 1202, 68 1227, 134113, 356442, A47L 1546

Patent

active

055865674

ABSTRACT:
A turbidity sensing mechanism for a dishwasher is connected in the fluid circulation conduit between the pump and the spray mechanism. The mechanism includes a hollow housing enclosing a hollow transparent tube connected in fluid flow relationship with the conduit. A source of electromagnetic radiation and a radiation-to-frequency sensor are positioned inside the housing on opposite sides of the tube.

REFERENCES:
patent: 3713743 (1973-01-01), Simms
patent: 3800147 (1974-03-01), Shea et al.
patent: 3861802 (1975-01-01), Belmear, Jr.
patent: 3870417 (1975-03-01), Bashark
patent: 3888269 (1975-06-01), Bashark
patent: 4222250 (1980-09-01), Torita
patent: 4637719 (1987-01-01), Herman
patent: 5172572 (1992-12-01), Ono
patent: 5265446 (1993-11-01), Kuroda et al.
patent: 5291626 (1994-03-01), Molnar et al.

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