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Laundry washing appliance with dosing dispenser

  • US 9,506,183 B2
  • Filed: 04/27/2010
  • Issued: 11/29/2016
  • Est. Priority Date: 05/11/2009
  • Status: Active Grant
First Claim
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1. A laundry washing appliance comprising a cabinet accommodating a laundry washing tub and a dispensing arrangement for dispensing laundry washing treatment products to be used during laundry washing, the dispensing arrangement comprising:

  • a drawer slidable within a seat provided in the cabinet, the drawer defining at least one container for containing laundry washing treatment products;

    at least one suction pump associated with the at least one container and fluidly connected to the laundry washing tub for delivering thereto dosed amounts of the treatment products from the container; and

    at least one valve for fluidly connecting the at least one container to the at least one suction pump, said valve being realized so as to automatically close and cut off the fluid connection between the at least one container and the at least one suction pump when the drawer is at least partially extracted from the seat, and to automatically open and establish the fluid connection between the at least one container and the at least one suction pump when the drawer is pushed into the seat;

    wherein;

    the at least one valve comprises at least a valve portion that is attached to the drawer seat, said valve portion being arranged at the top of the drawer seat, so that the drawer is slidable within the seat below the at least one valve portion, or at the bottom of the drawer seat, so that the drawer is slidable within the drawer seat above the valve portion, or on the back of the drawer seat; and

    said at least one valve comprises;

    at least one valve body;

    at least one fluid passage cut-off member movable within the valve body between a first position in which the fluid passage is cut off, and a second position in which the fluid passage is enabled;

    a respective bias member associated with the at least one fluid passage cut-off member for biasing it into the first position when the drawer is at least partially extracted from the seat, anda push member for pushing the bias member into the second position against the action of the bias member when the drawer is pushed into the seat.

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