Washing machine with dynamic water inlet control arrangement

Details Washing machine with dynamic water inlet control arrangement Washing machine with dynamic water inlet control arrangement

1996-01-05

1998-03-03

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

68 1219, 68207, 68208, 134 57D, 137387, D06F 3302, D06F 3908, A47L 1542

Patent

active

057222630

ABSTRACT:
Dishwashing machine including a valve (7) that is open during a water inlet phase and a circulation pump (11) that is energized during the water inlet phase. A control arrangement is driven by a signal (V) that is proportional to the outlet pressure of the circulation pump so as to close the inlet valve (7) when signal variations decrease below a pre-determined value. The circulation pump (11) is driven by a single-phase asynchronous motor (14) with a phase-shift capacitor (15) from which the signal (V) is derived. A further signal (U) can be derived from the capacitor (15) to drive the control arrangement so as to determine the correct de-energization of a discharge pump (18).

REFERENCES:
patent: 3478757 (1969-11-01), Tuthill
patent: 4097307 (1978-06-01), Geiger
patent: 5409023 (1995-04-01), Santarossa et al.

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