Dishwasher cycle--initial cycles lower spray arm only
First Claim
1. A method of washing objects in a dishwasher having upper and lower spray arms, said method comprising the steps of:
- continuously spraying wash liquid from the lower spray arm during initial cycles; and
alternately spraying wash liquid from the lower spray arm and the upper spray arm during a wash cycle, said wash cycle occurring after said initial cycles.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of washing objects in a dishwasher having upper and lower spray arms within a wash chamber and a sump filter. Wash liquid entering a sump from the wash chamber to be recirculated by a pump is filtered the filter to prevent soils from entering the sump and being recirculated. When the lower spray arm is operating, wash liquid is directly sprayed onto the filter from a clean-out nozzle on the lower spray arm to clean soils off the filter and prevent the filter from clogging. During a pre-wash cycle and at least one pre-rinse cycle, wash liquid is continuously sprayed from only the lower spray arm to prevent the filter from clogging when heavy soils are removed. During a wash cycle and at least one rinse cycle, wash liquid is alternately sprayed from the lower spray arm and the upper spray arm when the heavy soils have already been removed and it is less likely the filter will become clogged.
61 Citations
18 Claims
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1. A method of washing objects in a dishwasher having upper and lower spray arms, said method comprising the steps of:
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continuously spraying wash liquid from the lower spray arm during initial cycles; and alternately spraying wash liquid from the lower spray arm and the upper spray arm during a wash cycle, said wash cycle occurring after said initial cycles. - View Dependent Claims (2, 3, 4, 5, 6, 16)
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7. A method of washing objects in a dishwasher having upper and lower spray arms, said method comprising the steps of:
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continuously spraying wash liquid from the lower spray arm during at least a portion of a pre-wash cycle; and alternately spraying wash liquid from the lower spray arm and the upper spray arm during a wash cycles, the wash cycle occurring after the pre-wash cycle. - View Dependent Claims (8, 9, 10, 11, 12, 13, 17)
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14. A method of washing objects in a dishwasher having upper and lower spray arms within a wash chamber, said method comprising the steps of:
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continuously spraying wash liquid from the lower spray arm during a pre-wash cycle and at least one pre-rinse cycle, said pre-rinse cycle occurring after the pre-wash cycle; alternately spraying wash liquid from the lower spray arm and the upper spray arm during a wash cycle and at least one rinse cycle, said wash cycle occurring after said pre-rinse cycle and before said rinse cycle; filtering wash liquid entering a sump from the wash chamber with a filter; and directly spraying wash liquid onto the filter to prevent the filter from clogging when the lower spray arm is spraying wash liquid. - View Dependent Claims (15, 18)
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Specification