Laundry washing machine with detergent drawer comprising a control panel

• US 10,378,140 B2
• Filed: 11/20/2013
• Issued: 08/13/2019
• Est. Priority Date: 11/20/2013
• Status: Active Grant

• Current Assignee: Electrolux Appliances Aktiebolag (AB Electrolux)
• Original Assignee: Electrolux Appliances Aktiebolag (AB Electrolux)
• Inventors: Del Pos, Maurizio, Favaro, Daniele
• Primary Examiner(s): Barr, Michael E
• Assistant Examiner(s): Osterhout, Benjamin L
• Application Number:
  US15/036,906
• Publication Number:
  US 20160273150A1
• Time in Patent Office: 2,092 Days
• CPC Class Codes: D06F 34/28 Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
• CPC Class Codes: D06F 39/02 Devices for adding soap or other washing agents
• CPC Class Codes: D06F 39/022 in a liquid state D06F39/024 takes precedence
• CPC Class Codes: D06F 39/028 Arrangements for selectively supplying water to detergent compartments
• CPC Class Codes: D06F 39/088 Liquid supply arrangements

Abstract

Laundry washing machine has a casing, a washing tub with its opening facing a laundry loading/unloading opening on a the front wall of the casing, an autodosing detergent dispenser for automatically dosing, on the basis of the selected washing cycle, the suitable amount/dose of detergent, softener and/or other washing agent, and feeding said amount/dose into the washing tub. An appliance control panel is located/arranged on a front side of the drawer-like supporting structure which is fitted/inserted in extractable manner into a drawer housing extending inside the casing underneath the upper worktop or top wall of the casing. The autodosing detergent dispenser has one or more detergent reservoirs. A detergent collecting chamber communicates with the inside of the washing tub. Each detergent reservoir has a respective detergent feeding pump structured to selectively suck the specific amount of the detergent, softener or other washing agent necessary for performing the selected washing cycle.

Claims

1. A laundry washing machine comprising an outer casing, a washing tub which is arranged inside the casing with its opening or mouth directly facing a laundry loading/unloading opening realized on a front wall of the casing, a detergent dispensing assembly which is structured for supplying detergent into the washing tub, a main fresh-water supply circuit which is structured for being connected to a water mains and for selectively channelling a flow of fresh water from the water mains to the detergent dispensing assembly and/or to the washing tub, and an appliance control panel which is structured for allowing the user to manually select the desired washing-cycle;

wherein the detergent dispensing assembly comprises an autodosing detergent dispenser which is structured for automatically dosing, on the basis of the selected washing cycle, the suitable amount of detergent, softener and/or other washing agent to be used during the selected washing cycle, and which comprises;

one or more detergent reservoirs each of which is structured for receiving a quantity of detergent, softener or other washing agent for performing a plurality of washing cycles; and

for each detergent reservoir, a respective detergent feeding pump which is structured to selectively suck, from the corresponding detergent reservoir, the amount of the detergent, softener or other washing agent for performing the selected washing cycle, and to pump/channel said specific amount of detergent, softener or other washing agent into a detergent collecting chamber fluidly communicating with the washing tub;

wherein the laundry washing machine comprises a drawer-like supporting structure which is fitted/inserted in extractable manner into a corresponding drawer housing that extends inside the casing underneath an upper worktop or top wall of the casing, and communicates with the outside via a front entrance or opening provided at the front wall of the casing;

the appliance control panel being incorporated on a front side of the drawer-like supporting structure;

the one or more detergent reservoirs of the autodosing detergent dispenser being located/housed on the drawer-like supporting structure behind the appliance control panel, and said drawer-like supporting structure being movable between a retracted position in which the drawer- like supporting structure is completely recessed/inserted into the drawer housing , and an extracted position in which the drawer-like supporting structure partly juts out from the front wall of the casing so as to arrange the loading inlets or mouths of the one or more detergent reservoirs outside of the casing;

wherein each detergent feeding pump permanently communicates with one between the corresponding detergent reservoir and the detergent collecting chamber regardless of the position of the drawer-like supporting structure; and

the laundry washing machine furthermore comprises a movable connecting device which is structured to put in fluid communication each detergent feeding pump to the detergent collecting chamber and the corresponding detergent reservoir,

wherein said connecting device is movable together with the drawer-like supporting structure and is structured to fluidly couple each detergent feeding pump to the corresponding detergent collecting chamber when the drawerlike supporting structure is arranged in the retracted position, and to fluidly uncouple each detergent feeding pump from the corresponding detergent collecting chamber when the drawer-like supporting structure is arranged in the extracted position;

wherein each detergent feeding pump comprises a pumping assembly and an electric-motor assembly which are separate from one another, and are structured to reciprocally couple so as to allow the electric-motor assembly to drive the pumping assembly,

wherein the pumping assembly is located on the drawer-like supporting structure so as to suck the detergent, softener or other washing agent from the corresponding detergent reservoir, and fluidly coupled to the detergent collecting chamber via the movable connecting device, and

wherein the electric-motor assembly is fixed inside the casing so as to couple with the corresponding pumping assembly through the collecting chamber via the movable connecting device when the drawer-like supporting structure is arranged in the retracted position.

2. A laundry washing machine according to claim 1, wherein each detergent feeding pump is at least partly located on the drawer-like supporting structure with the suction in permanent communication with the corresponding detergent reservoir;

and the movable connecting device is structured to selectively fluidly couple each detergent feeding pump with the detergent collecting chamber.

3. A laundry washing machine according to claim 1, wherein each detergent feeding pump is arranged stationary inside the casing with the delivery of the detergent feeding pump in permanent fluid communication with the detergent collecting chamber;

and the movable connecting device is structured to selectively fluidly couple each detergent feeding pump with the corresponding detergent reservoir.

4. A laundry washing machine according to claim 1, wherein the detergent collecting chamber of the autodosing detergent dispenser is located outside of the drawer-like supporting structure, stationary inside the outer casing.

5. A laundry washing machine according to claim 1, wherein the detergent collecting chamber is located outside the washing tub and is arranged between the drawer housing and the back wall or a sidewall of the outer casing.

6. A laundry washing machine according to claim 1, wherein the detergent collecting chamber comprises a container or receptacle which is located outside of the drawer housing, as a separate piece attached to the drawer housing, or is at least partially realized in a one-piece construction with the drawer housing.

7. A laundry washing machine according to claim 1, wherein the movable connecting device comprises, for each detergent feeding pump, a respective delivery manifold which is arranged on the back side of a drawer- like supporting structure.

8. A laundry washing machine according to claim 1, wherein the movable connecting device comprises, for each detergent feeding pump, a respective delivery manifold, said delivery manifold protrudes from the back side of the drawer-like supporting structure, and is structured so as to directly face a corresponding pass-through opening or hole realized on a lateral wall of the detergent collecting chamber when the drawer- like supporting structure is arranged in the retracted position.

9. A laundry washing machine according to claim 1, wherein the movable connecting device comprises, for each detergent feeding pump, a respective delivery manifold, said delivery manifold is structured so as to plug/fit in easy extractable manner into a corresponding pass-through opening or hole realized on the detergent collecting chamber when the drawer-like supporting structure is arranged in the retracted position.

10. A laundry washing machine according to claim 1, wherein the autodosing detergent dispenser additionally comprises a first water supply circuit which is connected or incorporated to the fresh-water supply circuit, and is structured for selectively channelling some fresh water into the detergent collecting chamber, so as to selectively flush/push any amount of detergent, softener or other washing agent out of the detergent collecting chamber and into the washing tub.

11. A laundry washing machine according to claim 1, wherein the appliance control panel is arranged substantially coplanar to the front wall of the casing when the drawer-like supporting structure is in the retracted position.

12. A laundry washing machine according to claim 1, wherein said detergent reservoir/s is/are housed into the drawer- like supporting structure in manually removable manner.

13. A laundry washing machine according to claim 12, wherein each detergent feeding pump is housed or incorporated into the corresponding detergent reservoir so as to be manually removable from the drawer-like supporting structure together with the corresponding detergent reservoir.

14. A laundry washing machine according to claim 1, wherein the detergent dispensing assembly also comprises a single-dose detergent dispenser which is housed inside the casing above the washing tub and is structured for selectively feeding into the washing tub an amount of detergent, softener and/or other washing agent sufficient for performing a single washing cycle.

15. A laundry washing machine according to claim 14, wherein the single-dose detergent dispenser is housed inside the casing horizontally beside the autodosing detergent dispenser.

16. A laundry washing machine according to claim 14, wherein the single-dose detergent dispenser comprises a detergent drawer which is manually fillable with a quantity of detergent, softener and/or other washing agent sufficient for performing a single washing cycle, and which is fitted/inserted in manually extractable manner into a corresponding drawer housing which extends inside the casing underneath the upper worktop or top wall of the casing, and communicates with the outside via a front entrance or opening which is realized on the front wall of the casing above the laundry loading/unloading opening and horizontally beside the front entrance or opening of the drawer housing of the drawer-like supporting structure.

17. A laundry washing machine according to claim 16, wherein the drawer housing of the detergent drawer has a substantially basin-shaped bottom portion which communicates with the inside of the washing tub via a suitable first connecting duct, and the detergent collecting chamber communicates with the inside of the washing tub via a second connecting duct which joins the first connecting duct immediately upstream of the washing tub.

18. A laundry washing machine according to claim 16, wherein the drawer housing of the detergent drawer has a substantially basin-shaped bottom portion which communicates with the inside of the washing tub via a suitable first connecting duct, and the detergent collecting chamber is a portion of said first connecting duct.

19. A laundry washing machine according to claim 16, wherein the drawer housing of the detergent drawer has a substantially basin-shaped bottom portion which communicates with the inside of the washing tub and the drawer housing of the detergent drawer of the single-dose detergent dispenser forms the detergent collecting chamber.

20. A laundry washing machine according to claim 1, wherein the detergent collecting chamber is arranged above the washing tub.

21. A laundry washing machine according to claim 1, wherein the detergent collecting chamber is incorporated into the washing tub.

22. A laundry washing machine comprising an outer casing, a washing tub which is arranged inside the casing with its opening or mouth directly facing a laundry loading/unloading opening realized on a front wall of the casing, a detergent dispensing assembly which is structured for supplying detergent into the washing tub, a main fresh-water supply circuit which is structured for being connected to a water mains and for selectively channelling a flow of fresh water from the water mains to the detergent dispensing assembly and/or to the washing tub, and an appliance control panel which is structured for allowing the user to manually select the desired washing-cycle;

wherein the detergent dispensing assembly comprises an autodosing detergent dispenser which is structured for automatically dosing, on the basis of the selected washing cycle, the suitable amount of detergent, softener and/or other washing agent to be used during the selected washing cycle, and which comprises;

one or more detergent reservoirs each of which is structured for receiving a quantity of detergent, softener or other washing agent for performing a plurality of washing cycles; and

for each detergent reservoir, a respective detergent feeding pump including a pumping assembly and an electric-motor assembly is structured to selectively suck, from the corresponding detergent reservoir, the amount of the detergent, softener or other washing agent for performing the selected washing cycle, and to pump/channel said specific amount of detergent, softener or other washing agent into a detergent collecting chamber fluidly communicating with the washing tub;

wherein each detergent feeding pump including the pumping assembly and the electric-motor assembly is located inside the corresponding detergent reservoir;

wherein the laundry washing machine comprises a drawer-like supporting structure which is fitted/inserted in extractable manner into a corresponding drawer housing that extends inside the casing underneath an upper worktop or top wall of the casing, and communicates with the outside via a front entrance or opening provided at the front wall of the casing;

the appliance control panel being incorporated on a front side of the drawer-like supporting structure;

the one or more detergent reservoirs of the autodosing detergent dispenser being located/housed on the drawer-like supporting structure behind the appliance control panel, and said drawer-like supporting structure being movable between a retracted position in which the drawer- like supporting structure is completely recessed/inserted into the drawer housing, and an extracted position in which the drawer-like supporting structure partly juts out from the front wall of the casing so as to arrange the loading inlets or mouths of the one or more detergent reservoirs outside of the casing;

wherein each detergent feeding pump permanently communicates with the corresponding detergent reservoir regardless of the position of the drawer-like supporting structure, and

wherein each detergent feeding pump includes a movable connecting device which protrudes from the reservoir to put in fluid communication each detergent feeding pump to the detergent collecting chamber when the drawer-like supporting structure is arranged in the retracted position.