Dishwasher with spray system
First Claim
Patent Images
1. A dishwasher for treating utensils according to an automatic cycle of operation, comprising:
- a tub at least partially defining a treating chamber for receiving utensils for treatment according to the automatic cycle of operation;
a rotatable spray arm provided within the treating chamber and defining an interior through which liquid may pass;
first and second driving nozzles provided on the rotatable spray arm and in fluid communication with the interior, wherein emission of liquid from the first driving nozzle and not the second driving nozzle rotates the rotatable spray arm in a first direction, and emission of liquid from the second driving nozzle and not the first driving nozzle rotates the rotatable spray arm in a second direction, opposite the first direction;
a movable element located within the interior and movable between a first position, where the first driving nozzle is open and the second driving nozzle is closed, and a second position, where the first driving nozzle is closed and the second driving nozzle is open; and
a reciprocating element operably coupled between the movable element and the rotatable spray arm for reciprocation within the interior, based on the rotation of the rotatable spray arm, to alternately switch the movable element between the first and second positions to reverse the direction of rotation of the rotatable spray arm.
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Accused Products
Abstract
A dishwasher includes a tub at least partially defining a treating chamber for receiving utensils for treatment according to the automatic cycle of operation, a rotatable spray arm provided within the treating chamber and defining an interior through which liquid may pass, and hydraulic driving nozzles to rotate the rotatable spray arm in both a a first direction and a second direction, opposite the first direction.
61 Citations
16 Claims
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1. A dishwasher for treating utensils according to an automatic cycle of operation, comprising:
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a tub at least partially defining a treating chamber for receiving utensils for treatment according to the automatic cycle of operation; a rotatable spray arm provided within the treating chamber and defining an interior through which liquid may pass; first and second driving nozzles provided on the rotatable spray arm and in fluid communication with the interior, wherein emission of liquid from the first driving nozzle and not the second driving nozzle rotates the rotatable spray arm in a first direction, and emission of liquid from the second driving nozzle and not the first driving nozzle rotates the rotatable spray arm in a second direction, opposite the first direction; a movable element located within the interior and movable between a first position, where the first driving nozzle is open and the second driving nozzle is closed, and a second position, where the first driving nozzle is closed and the second driving nozzle is open; and a reciprocating element operably coupled between the movable element and the rotatable spray arm for reciprocation within the interior, based on the rotation of the rotatable spray arm, to alternately switch the movable element between the first and second positions to reverse the direction of rotation of the rotatable spray arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A dishwasher for treating utensils according to an automatic cycle of operation, comprising:
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a tub at least partially defining a treating chamber for receiving utensils for treatment according to the automatic cycle of operation; a rotatable spray arm provided within the treating chamber and defining an interior through which liquid may pass; first and second driving nozzles provided on the rotatable spray arm and in fluid communication with the interior, wherein emission of liquid from the first driving nozzle and not the second driving nozzle rotates the rotatable spray arm in a first direction, and emission of liquid from the second driving nozzle and not the first driving nozzle rotates the rotatable spray arm in a second direction, opposite the first direction; a movable element located within the interior and movable between a first position, where the first driving nozzle is open and the second driving nozzle is closed, and a second position, where the first driving nozzle is closed and the second driving nozzle is open; a reciprocating element operably coupled between the movable element and the rotatable spray arm for reciprocation within the interior to alternately switch the movable element between the first and second positions to reverse the direction of rotation of the rotatable spray arm; and a cam provided on one of the movable element and the reciprocating element, and a complementary cam follower provided on the other of the movable element and the reciprocating element, wherein the reciprocation of the reciprocating element causes the cam follower to follow the cam to move the movable element between the first and second positions. - View Dependent Claims (14, 15)
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16. A dishwasher for treating utensils according to an automatic cycle of operation, comprising:
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a tub at least partially defining a treating chamber for receiving utensils for treatment according to the automatic cycle of operation; a rotatable spray arm provided within the treating chamber and defining an interior through which liquid may pass; first and second driving nozzles provided on the rotatable spray arm and in fluid communication with the interior, wherein emission of liquid from the first driving nozzle and not the second driving nozzle rotates the rotatable spray arm in a first direction, and emission of liquid from the second driving nozzle and not the first driving nozzle rotates the rotatable spray arm in a second direction, opposite the first direction; a movable element located within the interior and movable between a first position, where the first driving nozzle is open and the second driving nozzle is closed, and a second position, where the first driving nozzle is closed and the second driving nozzle is open; and a laterally reciprocating element operably coupled between the movable element and the rotatable spray arm for reciprocation within the interior to alternately switch the movable element between the first and second positions to reverse the direction of rotation of the rotatable spray arm.
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Specification