Dishwashing machine with water fill control

Details Dishwashing machine with water fill control Dishwashing machine with water fill control

1993-10-14

1995-04-25

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

Automatic controls

134 56D, 134 58D, B08B 302

Patent

active

054090237

ABSTRACT:
In order to complete a water fill phase, an electromagnetically actuated water fill valve (11) enables water from a supply source to flow into a dishwasher tank, this water being at the same time taken in by a circulation pump (3). Both the valve and the pump are controlled by a timer switch arranged to be energized from a power supply source (4, 5) through a normally open pressure-responsive switch (14) that is arranged to close when the pressure at the delivery side of said circulation pump (3) rises beyond a pre-determined value (P2). At the beginning of the water fill phase, the valve (11) is opened by the timer switch until the latter has been energized for a pre-determined total period of time (T) where T equals the summation of times T1-T6.

REFERENCES:
patent: 3334651 (1967-08-01), Clearman
patent: 3344804 (1967-10-01), Lyman
patent: 3358701 (1967-12-01), Fay
patent: 3519796 (1970-07-01), Bebinger
patent: 3835880 (1974-09-01), Hoffman et al.
patent: 4119116 (1978-10-01), Johnson et al.
patent: 4271861 (1981-06-01), Crawford
patent: 5257171 (1992-10-01), Hara

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