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US 12,171,389 B2Granted
Dishwasher
AssigneeWhirlpool Corporation
InventorsMatthias Emanuel Freiherr Von Andrian-Werburg, Veronica Marin Kramer, Miron Wawrzusiak
Life of this patent
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Abstract
A dishwasher includes a tub at least partially defining a treating chamber, a rotatable spray arm comprising an outlet, and a liquid supply conduit fluidly coupled to the spray arm. A pump can be fluidly coupled to the liquid supply conduit and operated to flow liquid through an aperture in the liquid supply conduit and through the outlet in the rotatable spray arm.
Claims11
A dishwasher for treating dishes according to a cycle of operation, the dishwasher comprising:
- a tub at least partially defining a treating chamber;
- a rotatable spray arm having an outlet defining a rotational path as the rotatable spray arm is rotated;
- a liquid supply conduit fluidly coupled to the rotatable spray arm, the liquid supply conduit comprising an aperture facing a portion of the rotational path;
- a pump fluidly coupled to the liquid supply conduit and configured to supply liquid to the liquid supply conduit and the rotatable spray arm, wherein the pump is configured to provide a pump signal comprising at least one of a pump motor voltage and a pump motor current, and wherein the pump signal is indicative of an impingement between liquid emitted from the outlet and liquid emitted from the aperture;
- and
- a controller in signal communication with the pump, wherein the controller is configured to determine a rotational status of the rotatable spray arm based on the pump signal, the rotational status being whether or not rotation of the rotatable spray arm is impeded.
3 more elements
Dependencies are inferred from the claim text.