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...

2011-07-12

2011-07-12

Smith, Duane (Department: 1776)

Gas separation: processes

Filtering

With cleaning of filter

C055S302000, C055S429000, C055S420000, C055S288000, C055S467000, C055SDIG030, C015S352000

Reexamination Certificate

active

07976614

ABSTRACT:
The invention relates to a method for cleaning the filters of a vacuum cleaner. A dirt collecting container of the vacuum cleaner has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one suction extraction line. At least one external air inlet is provided which opens into the suction extraction line downstream of the filter and can be closed by a closing valve. The closing valve has a movable valve body which is acted upon by a closing spring with a closing force. In order to clean 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. The valve body is acted upon, irrespective of its position, by the closing force of the closing spring and, in a position at a distance from the valve seat, additionally acted upon by a repulsion force of a resilient stop element.

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