Alfred Kaercher Gmbh & Co. Kg

Alfred Kärcher Se Co. Kg

Alfred Kärcher Gmbh Co. Kg

Daniel Eckstein

Maic Hensel

Thorsten Langen

Juergen Frank

Stefan Hess

Christian Stewen

Rainer Engelhardt

Juergen Steinbach

Gottfried Benzler

Dirk Ricklefsen

Werner Rentschler

Martin Wegner

Guenther Holzwarth

Jürgen Frank

Jürgen Steinbach

Günther Holzwarth

A suction device, including a suction unit, a suction line arrangement that is fluidically connected to the suction unit, a fluid supplying arrangement, a discharge arrangement for fluid, which is fluidically connected to the fluid supplying arrangement, and a guide element that is couplable to the discharge arrangement and the suction line arrangement and that guides fluid from the discharge arrangement into the suction line arrangement, for cleaning the suction line arrangement.

Suction device and method for operating a suction device

A suction cleaning apparatus comprising a dirt collection container which has a suction inlet and is fluidly connected to at least one suction unit via at least one filter and at least one suction channel is provided. The suction cleaning apparatus further has at least one external air inlet which opens out into the suction channel downstream of the at least one filter and which is selectively closable and openable by means of a closing body. In order to reduce the installation space of the closing body required for proper filter cleaning, the suction channel has an external air inlet wall with at least one external air inlet. The closing body, sliding along the outer side of the external air inlet wall, is reciprocatingly movable between a closed position closing the at least one external air inlet and an open position opening the at least one external air inlet.

Suction cleaning apparatus

A method for cleaning first and second filters of a suction device for cleaning purposes is provided. The suction device has a dirt collection container with a suction inlet. The dirt collection container is subjected to negative pressure via first and second suction lines, respectively, following the first and second filters. First and second closing valves close first and second external air inlets, respectively, into the first and second suction lines. For cleaning the filters, the closing valves are opened, subjecting the filters to external air on the clean space side. The dirt collection container is subjected to negative pressure via the first suction line and first filter by a first suction unit and via the second suction line and second filter by a second suction unit. The suction lines are sealed off relative to each other on the clean space side at least during the cleaning of the filters.

Method for cleaning two filters of a suction device for cleaning purposes and suction device for performing the method

The invention relates to a method for cleaning filters of a vacuum cleaner having a dirt collecting container, which 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, and at least one external air inlet which opens into the suction extraction line downstream of the filter and can be closed by means of a closing valve. The closing valve has a movable valve body acted upon by a closing spring with a closing force and, in the closed position, additionally by a magnetic holder with a magnetic holding force. In order to clean the filter, at least one closing valve is opened and the side of the filter oriented away from the dirt collecting container is impinged upon by external air. A vacuum cleaner for carrying out the method is also provided.

Method for cleaning the filters of a vacuum cleaner and vacuum cleaner for carrying out the method

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.

The invention relates to a vacuum cleaner with a dirt collection tank which has a suction inlet and is in flow connection with at least one suction unit via at least one filter and at least one extraction line, and with at least one external air inlet which opens into the extraction line downstream of the filter and can be closed by means of at least one closing valve, wherein the closing valve has a movable valve member which is acted upon by a spring-elastic restoring device with a closing force and in the closing position, in addition, by a magnetic holding device with a magnetic holding force. In order to develop the vacuum cleaner further in such a manner that it makes a particularly effective cleaning of the filter possible, it is suggested in accordance with the invention that the magnetic holding device have an electromagnet which can be acted upon with an exciting current for the purpose of closing the closing valve and that the valve member can be moved continuously back into the closing position via the open position, proceeding from the closing position, when the exciting current is interrupted, wherein the switch-off time of the exciting current is adapted to the movement time of the valve member.

Vacuum cleaner

Growing community of inventors

Winnenden, Germany

Daniel Eckstein