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

A - Human Necessities

47

L

A47L 15/46 (2006.01) A47L 15/42 (2006.01) D06F 33/02 (2006.01) D06F 39/08 (2006.01)

Patent

CA 2169984

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).

Lave-vaisselle comportant un robinet (7) ouvert pendant la phase d'arrivée d'eau et une pompe de circulation (11) qui est alimentée en courant pendant la phase d'arrivée d'eau. Un mécanisme de commande est entraîné par un signal (V) qui est proportionnel à la pression de sortie de la pompe de circulation de façon à fermer le robinet d'admission (7) quand les variations de signaux chutent sous une valeur prédéterminée. La pompe de circulation (11) est entraînée par un moteur asynchrone monophasé (14) possédant un condensateur de déphasage (15) duquel est obtenu le signal (V). Un autre signal (U) peut être également obtenu du condensateur de déphasage (15) pour entraîner le mécanisme de commande afin de déterminer à quel moment une pompe d'évacuation doit être mise hors tension.

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