Method for cleaning the filters of a vacuum cleaner and...

Details Method for cleaning the filters of a vacuum cleaner and... Method for cleaning the filters of a vacuum cleaner and...

2011-01-11

2011-01-11

Smith, Duane (Department: 1797)

Gas separation

With nonliquid cleaning means for separating media

Cohesive filter media cleaning

C055SDIG030, C015S352000, C096S403000

Reexamination Certificate

active

07867304

ABSTRACT:
The invention relates to a method for cleaning the filter of a vacuum cleaner which has a dirt collecting container with a suction inlet, to which a suction tube is connected, the dirt collecting container being connected to at least one suction unit via at least one filter and at least one suction line, and at least one closing valve closing an external air inlet, via which the suction line is connected to an external air supply, in which method, for cleaning the filter, the closing valve is opened and the side of the filter that is oriented away from the dirt collecting container is impinged upon by external air. To develop the method further in such a way that all the filters present can be flowed through by suction air during suction operation, but suction operation does not have to be noticeably interrupted for filter cleaning, it is proposed according to the invention that, by opening the closing valve, the negative pressure that forms within the suction tube at a distance of 3 cm from the suction inlet, on connecting a standard suction tube, is lowered for at least 10 ms and at most 150 ms to values of less than 40% of the value forming when the closing valves are closed. The invention also relates to a vacuum cleaner for carrying out the method.

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