Washing machine pump control for water drainage,...

Details Washing machine pump control for water drainage,... Washing machine pump control for water drainage,...

D - Textiles, Paper

06

F

D06F 33/02 (2006.01) D06F 39/08 (2006.01)

Patent

CA 2628457

The present invention relates to a washing machine (70 and pump (8) for a washing machine (7). The pump is driven by a brushless DC motor (38). The pump can be controlled to improve the operation of the washing machine. In one aspect the invention comprises a washing machine (7) with a variable speed pump (7) for pumping out waste water, a controller (50) for controlling the speed of the pump and a sensor (10) for determining the flow rate of water being pumped from the washing machine, wherein the controller (50) controls the speed of the pump to maintain the flow rate at a desirable level. Also disclosed is a method of reducing the effects of ventilation, dislodging a pump blockage, and a method of controlling a recirculation pump.

L'invention concerne une machine à laver (7) et une pompe (8) pour machine à laver (7). La pompe est entraînée par un moteur à courant continu sans balai (38). La pompe peut être commandée pour améliorer le fonctionnement de la machine à laver. Dans un aspect de l'invention, la machine à laver (7) est équipée d'une pompe à vitesse variable (8) pour vidanger les eaux usées par pompage, d'une unité de commande (50) pour commander la vitesse de la pompe et d'un capteur (10) pour déterminer la vitesse d'écoulement de l'eau pompée par la machine à laver, l'unité de commande (50) commandant la vitesse de la pompe pour maintenir la vitesse d'écoulement à un niveau souhaité.

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