Patent
Laundry washing appliance with dosing dispenser
| العنوان: | Laundry washing appliance with dosing dispenser |
|---|---|
| Patent Number: | 9,057,150 |
| تاريخ النشر: | June 16, 2015 |
| Appl. No: | 13/319909 |
| Application Filed: | April 29, 2010 |
| مستخلص: | A laundry washing appliance (100) includes a cabinet (105) accommodating a laundry washing tub and a dispensing arrangement for dispensing laundry washing treatment products to be used during laundry washing. The dispensing arrangement includes a drawer (125) slidable within a seat (227) provided in the cabinet (105). The drawer (125) defines at least one container (201a, 201b) for laundry washing treatment products. At least one suction pump (265a, 265b, 365a, 365b) is associated with the at least one container (201a, 201b) and is fluidly connected to the laundry washing tub for delivering thereto dosed amounts of the treatment products. Suction pipes (213a, 213b, 331) are connected between the at least one suction pump (265a, 265b, 365a, 365b) and the at least one container (201a, 201b). The at least one suction pump (265a, 265b, 365a, 365b) and the suction pipes (213a, 213b, 331) are arranged so as to enable the suction of the dosed amounts of treatment product from above a surface of the treatment product contained in the container (201a, 201b). |
| Inventors: | Zattin, Andrea (Solesino, IT); Stabon, Elisa (Fosso′, IT); Del Pos, Maurizio (Pordenone, IT); Filippetti, Mario (Campoformido, IT) |
| Assignees: | Electrolux Home Products Corporation N.V. (Brussel, BE) |
| Claim: | 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 drawer 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 at least one container; and a fluid connection between the at least one suction pump and the at least one container, wherein the at least one suction pump and the fluid connection are arranged so as to enable the suction of the dosed amounts of treatment product upwardly from the at least one container, and the at least one suction pump comprises a pump motor part and a pump body part separable from one another, the pump motor part being mounted to the drawer seat, and the pump body part being mounted to the drawer, said pump body part and said pump motor part each comprising a motion transmission member for transmitting motion of the pump motor part to the pump body part when those parts are engaged, said pump motor part and said pump body part being configured to separate from each other as a result of withdrawal of the drawer from the drawer seat. |
| Claim: | 2. The laundry washing appliance of claim 1 , wherein the at least one suction pump is arranged so that in operation it results in the suction of the dosed amounts from above a surface level of the treatment product contained in the at least one container. |
| Claim: | 3. The laundry washing appliance of claim 1 , wherein the pump motor part is mounted at a rear of the drawer seat, and the pump body part is mounted at a rear of the drawer. |
| Claim: | 4. The laundry washing appliance of claim 1 , wherein the dispensing arrangement comprises a mixing chamber, the at least one suction pump associated with the at least one container being fluidly connected to the mixing chamber for delivering thereto dosed amounts of the treatment products from the at least one container, the mixing chamber being fluidly connected to a water inlet and to the laundry washing tub. |
| Claim: | 5. The laundry washing appliance of claim 4 , further comprising a water feed channel connected to an outlet of at least one electrovalve which in use is connectable to an external water main, the water feed channel being fluidly connected to the mixing chamber. |
| Claim: | 6. The laundry washing appliance of claim 5 , wherein the at least one suction pump associated with the at least one container is fluidly connected to the water feed channel for delivering thereto dosed amounts of the treatment products sucked from the at least one container. |
| Claim: | 7. The laundry washing appliance of claim 6 , wherein the water feed channel comprises a first sub-chamber, whereinto fresh water is loadable, and a second sub-chamber, where the dosed amounts of treatment products delivered by the at least one pump are discharged, the first and second sub-chambers being partially separated from one another. |
| Claim: | 8. The laundry washing appliance of claim 7 , wherein the mixing chamber is interposed between the pump motor part and the pump body part. |
| Claim: | 9. The laundry washing appliance of claim 5 , wherein the mixing chamber is interposed between the pump motor part and the pump body part. |
| Claim: | 10. The laundry washing appliance of claim 5 , wherein the mixing chamber and/or the water feed channel are in single-piece construction with the drawer seat. |
| Claim: | 11. The laundry washing appliance of claim 1 , wherein the at least one suction pump is a positive displacement pump. |
| Claim: | 12. The laundry washing appliance of claim 11 , wherein: the pump motor part comprises an electric motor and a drive axle, and the pump body part comprises: a motion transmission axle configured to releasably engage the drive axle, a piston driven by the motion transmission axle and movable within a pump chamber, a first non-return valve at an intake of the at least one suction pump, and a second non-return valve at a delivery outlet of the at least one suction pump, wherein the first and second non-return valves are caused to open and close in phase opposition by pressure deltas caused by the movement of the piston within said pump chamber. |
| Claim: | 13. The laundry washing appliance of claim 1 , comprising 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. |
| Claim: | 14. The laundry washing appliance of claim 13 , 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. |
| Claim: | 15. The laundry washing appliance of claim 14 , wherein 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, and a 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. |
| Patent References Cited: | 2009/0100881 April 2009 Dahlke 32 46 127 June 1984 601 29 609 May 2008 0 528 768 February 1993 1 690 972 August 2006 1 884 584 February 2008 2 011 913 January 2009 2008/010671 January 2008 2008000612 January 2008 |
| Other References: | International Search Report mailed Oct. 26, 2010 in corresponding International Application No. PCT/EP2010/055835. cited by applicant Extended European Search Report dated Oct. 14, 2009 in related European Application No. 09159846.6. cited by applicant International Search Report mailed Sep. 17, 2010 in related International Application No. PCT/EP2010/055642. cited by applicant Office Action issued on Mar. 13, 2014 in corresponding Russian Application No. 2011150208. cited by applicant |
| Assistant Examiner: | Shahinian, Levon J |
| Primary Examiner: | Perrin, Joseph L |
| Attorney, Agent or Firm: | Banner & Witcoff, Ltd. |
| رقم الانضمام: | edspgr.09057150 |
| قاعدة البيانات: | USPTO Patent Grants |
| الوصف غير متاح. |