Washing machine with a reversing-mode washing drum
AssigneeBosch-Siemens Hausgeraete GmbH
InventorsGunter Wentzlaff, Ingo Schulze, Harald Moschutz, Gundula Czyzewski
Life of this patent
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Abstract
A washing machine includes a perforated washing drum with a contact rpm at which items of laundry in the washing drum come to rest against a surface of the washing drum due to centrifugal force. The washing drum is intermittently driven in alternating rotary directions (reversing mode) during washing and/or rinsing, for accelerating the washing drum in one of the rotary directions to a first rpm being markedly below the contact rpm and accelerating the washing drum in the other of the rotary directions to a second rpm being markedly above the contact rpm.
Claims10
In a washing machine having washing and rinsing cycles, the improvement comprising:
- a perforated washing drum having a contact rpm at which items of laundry in said washing drum come to rest against a surface of said washing drum due to centrifugal force;
- and
- means for intermittently driving said washing drum in alternating rotary directions within a single reversing mode cycle, said driving means, during the single reversing mode cycle, accelerating said washing drum in one of said rotary directions only to a first rpm markedly below said contact rpm and accelerating said washing drum in the other of said rotary directions only to a second rpm markedly above said contact rpm.
In a method of operating a washing machine with washing cycles and rinsing cycles in reversing mode, wherein the washing machine has a perforated washing drum with a contact rpm at which items of laundry in said washing drum come to rest against a surface of said washing drum due to centrifugal force;
- the improvement which comprises:
- intermittently driving the washing drum in alternating rotary directions within a single reversing mode cycle, by accelerating said washing drum in one of said rotary directions only to a first rpm markedly below said contact rpm, and accelerating said washing drum in the other of said rotary directions only to a second rpm markedly above said contact rpm.
Dependencies are inferred from the claim text.