Dishwasher

• US 9,474,434 B2
• Filed: 12/10/2013
• Issued: 10/25/2016
• Est. Priority Date: 06/17/2003
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Carlson, Christopher J., Gurubatham, Vincent P., Landsiedel, Jay C., Thies, Edward L., Vanderroest, Chad T.
• Primary Examiner(s): Chaudhry, Saeed T
• Application Number:
  US14/101,800
• Publication Number:
  US 20140090675A1
• Time in Patent Office: 1,050 Days
• Field of Search: 134/56.D, 134/57.D, 134/177, 134/178, 134/198, 134/200
• US Class Current: 1/1
• CPC Class Codes: A47L 15/16 with rigidly-mounted spraying devices
• CPC Class Codes: A47L 15/22 Rotary spraying devices
• CPC Class Codes: A47L 15/4217 Fittings for water supply, e.g. valves or plumbing means to connect to cold or warm water lines, aquastops
• CPC Class Codes: A47L 15/4221 Arrangements for redirection of washing water, e.g. water diverters to selectively supply the spray arms A47L15/0078 takes precedence
• CPC Class Codes: A47L 15/4278 Nozzles

Abstract

A dishwasher having a tub defining a wash chamber, and upper and lower dish racks located within the wash chamber. The dishwasher also has upper and lower rotating sprayers beneath the upper and lower dish racks, and a manifold with at least one nozzle having at least one aperture located in the wash chamber.

Claims

1. A dishwasher comprising:

a tub at least partially defining a wash chamber and having an open face providing access to the wash chamber and a sump;

a door selectively closing the open face;

a lower dish rack located within the wash chamber;

an upper dish rack located within the wash chamber above the lower dish rack;

a lower rotating sprayer located within the wash chamber beneath the lower dish rack;

an upper rotating sprayer located within the wash chamber beneath the upper dish rack;

a supply tube fluidly coupled to the sump and extending to the upper rotating sprayer; and

a manifold extending laterally from the supply tube and having at least one nozzle with at least one aperture.

2. The dishwasher of claim 1, wherein the lower and upper rotating sprayers comprise rotating spray arms.

3. The dishwasher of claim 1 and further comprising an additional sprayer located within the wash chamber above the upper dish rack.

4. The dishwasher of claim 1, wherein the manifold is located adjacent to at least one of the lower dish rack and the upper dish rack.

5. The dishwasher of claim 1, wherein the manifold is located along a wall of the tub between the lower dish rack and the upper dish rack.

6. The dishwasher of claim 1, wherein the manifold is fixedly mounted within the wash chamber.

7. The dishwasher of claim 1, wherein the tub comprises at least one side wall connected to a rear wall, and the manifold extends along at least one of the rear wall and the at least one side wall.

8. The dishwasher of claim 7, wherein the manifold extends along both of the rear wall and the at least one side wall.

9. The dishwasher of claim 7, wherein the manifold has multiple nozzles, each nozzle having at least one aperture configured to direct a spray of liquid substantially laterally relative to at least one of the side wall and the rear wall.

10. The dishwasher of claim 7, wherein the supply tube extends along the at least one of the side wall and the rear wall.

11. The dishwasher of claim 1, wherein the at least one nozzle has multiple apertures.

12. The dishwasher of claim 11, wherein the at least one nozzle has a circular shape.

13. The dishwasher of claim 1 wherein the manifold defines a passageway, and the at least one aperture is fluidly coupled to the supply tube via the passageway.

14. The dishwasher of claim 1, wherein the manifold has multiple nozzles, each nozzle having at least one aperture.

15. The dishwasher of claim 14, wherein the multiple nozzles are arranged substantially horizontally along at least one wall of the tub.

16. The dishwasher of claim 1, wherein the manifold comprises two opposing portions configured to selectively receive liquid through the supply tube.

17. The dishwasher of claim 16, wherein the two opposing portions are positioned on opposite sides of the supply tube, with each portion extending laterally from the supply tube.

18. The dishwasher of claim 16, where each of the two opposing portions comprises at least one nozzle having at least one aperture.

19. The dishwasher of claim 1 and further comprising a pump assembly, wherein the supply tube extends rearwardly from the pump assembly to a rear wall of the tub and upwardly to supply liquid to the upper rotating sprayer.

20. The dishwasher of claim 19 and further comprising a valve configured to direct the flow of liquid either through the supply tube to the upper rotating sprayer or through the at least one nozzle.

21. A dishwasher comprising:

a tub at least partially defining a wash chamber and having opposing side walls connected by a rear wall and an open face providing access to the wash chamber;

a door selectively closing the open face;

a lower dish rack located within the wash chamber;

an upper dish rack located within the wash chamber above the lower dish rack;

a lower rotating sprayer located within the wash chamber beneath the lower dish rack;

an upper rotating sprayer located within the wash chamber beneath the upper dish rack;

a manifold extending along at least one of the side and rear walls, and having at least one nozzle having at least one aperture located in the wash chamber; and

a liquid supply providing liquid to the lower rotating sprayer, upper rotating sprayer and the manifold, the liquid supply including a supply tube selectively providing wash liquid to the manifold;

wherein the manifold includes two opposing portions extending laterally from the supply tube and wherein the two opposing portions are fixedly mounted on the at least one of the side and rear walls of the tub.

22. The dishwasher of claim 21, wherein the lower and upper rotating sprayers comprise rotating spray arms.

23. The dishwasher of claim 21 and further comprising an additional sprayer located within the wash chamber above the upper dish rack.

24. The dishwasher of claim 21, wherein the manifold is located adjacent to at least one of the lower dish rack and the upper dish rack.

25. The dishwasher of claim 21, wherein the manifold is located along a wall of the tub between the lower dish rack and the upper dish rack.

26. The dishwasher of claim 21, wherein the manifold has multiple nozzles, each nozzle having at least one aperture configured to direct a spray of liquid substantially laterally relative to at least one of the rear wall and the opposing side walls.

27. The dishwasher of claim 21, wherein the at least one nozzle has multiple apertures.

28. The dishwasher of claim 27, wherein the at least one nozzle has a circular shape.

29. The dishwasher of claim 21 wherein the manifold defines a passageway, and the at least one aperture is fluidly coupled to the liquid supply via the passageway.

30. The dishwasher of claim 21, wherein the manifold has multiple nozzles, each nozzle having at least one aperture.

31. The dishwasher of claim 30, wherein the multiple nozzles are arranged substantially horizontally along at least one wall of the tub.

32. The dishwasher of claim 21, where each of the two opposing portions comprises at least one nozzle having at least one aperture.

33. The dishwasher of claim 21, wherein the liquid supply further comprises a pump assembly fluidly coupled to the lower rotating sprayer, upper rotating sprayer and the manifold.

34. The dishwasher of claim 33 and further comprising a valve configured to direct the flow of liquid from the pump assembly either through the upper rotating sprayer or through the at least one nozzle.