Dishwasher with directional spray

• US 9,414,736 B2
• Filed: 07/28/2014
• Issued: 08/16/2016
• Est. Priority Date: 09/22/2011
• Status: Active Grant

• Current Assignee: Whirlpool Corporation
• Original Assignee: Whirlpool Corporation
• Inventors: Feddema, Mark S.
• Primary Examiner(s): Cormier, David
• Assistant Examiner(s): Bucci, Thomas
• Application Number:
  US14/444,378
• Publication Number:
  US 20140332041A1
• Time in Patent Office: 750 Days
• Field of Search: 134/176, 134/179, 134/56.D, 134/198, 134/172, 134/58.D, 134/57.D, 134/180, 134/178, 134/200, 134/183, 134/103.2, 134/95.3, 134/99.1, 239/251, 239/245, 239/261, 239/227, 239/214, 239/222.17, 239/242, 239/380, 239/101, 239/222.11
• US Class Current: 1/1
• CPC Class Codes: A47L 15/23 moved by means of the sprays
• CPC Class Codes: A47L 15/4278 Nozzles
• CPC Class Codes: A47L 15/4282 Arrangements to change or modify spray pattern or direction

Abstract

A dishwasher includes a tub at least partially defining a treating chamber and a spraying system for supplying liquid to the treating chamber. The spraying system includes a sprayer having a body with an interior, a liquid passage provided in the interior, and a plurality of outlets extending through the body and in fluid communication with the liquid passage.

Claims

1. A dishwasher for washing utensils according to an automatic cycle of operation, comprising:

a tub at least partially defining a treating chamber for receiving utensils for cleaning; and

a spraying system for supplying liquid to the treating chamber and having a spray arm comprising;

an elongated body having an interior and rotatable about an axis of rotation;

a liquid passage provided in the interior;

at least one outlet located on a length of the elongated body such that it is spaced away from the rotational axis and extending through the body and in fluid communication with the liquid passage;

a valve body movable along a length of the elongated body to fluidly couple different portions of the at least one outlet to the liquid passage to alter a direction of liquid emitted from the at least one outlet; and

an actuator operably coupled to the valve body and configured to move the valve body during the automatic cycle of operation to control the direction of liquid emitted from the outlet.

2. The dishwasher of claim 1 wherein the valve body comprises an opening having multiple portions.

3. The dishwasher of claim 2 wherein the actuator is configured to move the valve body during the automatic cycle of operation to a first position where one of the multiple portions of the opening fluidly couples a first portion of the outlet to the liquid passage to effect an emitting of liquid through the outlet in a first direction.

4. The dishwasher of claim 3 wherein the actuator is configured to move the valve body during the automatic cycle of operation to a second position where another of the multiple portions of the opening fluidly couples a second portion of the outlet, different from the first portion, to the liquid passage to effect an emitting of liquid through the outlet in a second direction, different from the first direction.

5. The dishwasher of claim 2 wherein the movement of the valve body moves the multiple portions of the opening such that a fluidly coupled portion of the opening is effectively moved in a direction that is not along the length of the elongated body.

6. The dishwasher of claim 4 wherein the first direction is generally opposite the second direction.

7. The dishwasher of claim 4 wherein the actuator is configured to move the valve body during the automatic cycle of operation to a third position where yet another of the multiple portions of the opening fluidly couples a third portion of the outlet, different from the first and second portions, to the liquid passage to effect an emitting of liquid through the outlet in a third direction, different from the first and second directions.

8. The dishwasher of claim 7 wherein the first direction is in a direction with the rotation of the spray arm, the second direction is in a direction against the rotation of the spray arm, and the third direction is in an upwards direction.

9. The dishwasher of claim 2 wherein the valve body further comprises a sliding plate through which the opening extends.

10. The dishwasher of claim 1 wherein the valve body is located within the body.

11. The dishwasher of claim 10 wherein the valve body is reciprocally moveable within the spray arm.

18. The dishwasher of claim 1 wherein the actuator is operably coupled with the spray arm and the valve body via a mechanical linkage and configured to move the valve body based on a rotational position of the spray arm.

12. A dishwasher for washing utensils according to an automatic cycle of operation, comprising:

a tub at least partially defining a treating chamber for receiving utensils for cleaning; and

a spraying system for supplying liquid to the treating chamber and having a rotatable sprayer comprising;

a body having an interior and rotatable about an axis of rotation;

a liquid passage provided in the interior;

at least one outlet extending through the body, in fluid communication with the liquid passage, and located away from the axis of rotation of the body; and

a valve body located within the liquid passage and having an opening corresponding to the at least one outlet to collectively form an effective opening, with the valve body configured to move along a length of the body during the automatic cycle of operation to adjust the relative positions of the outlet and opening to alter the shape of the effective opening to control the direction of liquid emitted from the outlet during the automatic cycle of operation.

13. The dishwasher of claim 12 wherein the opening comprises multiple portions.

14. The dishwasher of claim 13 wherein when the valve body moves during the automatic cycle of operation the multiple portions of the opening fluidly coupled to the at least one outlet change to alter the shape of the effective opening to control the direction of liquid emitted from the outlet.

15. The dishwasher of claim 14 wherein when the valve body is moved during the automatic cycle of operation to a first position one of the multiple portions of the opening fluidly couples a first portion of the outlet to the liquid passage to define a first effective opening that emits liquid in a first direction.

16. The dishwasher of claim 15 wherein when the valve body is moved during the automatic cycle of operation to a second position another of the multiple portions of the opening fluidly couples a second portion of the outlet to the liquid passage to define a second effective opening that emits liquid in a second direction, different from the first direction.

17. The dishwasher of claim 16 wherein the first direction is in a direction with the rotation of the body of the sprayer and the second direction is in a direction against the rotation of the body of the sprayer.