Dust extractor

Abstract

Dust extractor (1), comprising the following: a dust collection chamber (13) which is connected to a suction opening (11) and is designed to collect dust; a container section (10) in which the dust collection chamber (13) is arranged; a main body (20) detachably attached to an upper part of the container section (10), which includes a motor (23) and a dust removal fan (25) driven by the motor; a filter device (12) which is cylindrical and is arranged in the dust collection chamber (13), wherein the filter device is designed to separate dust from the air drawn in through the suction opening (11) when the air flows through the filter device (12); a passage element (50) is arranged on the main body (20) which forms an air passage through which outside air and a filter interior (14) within the filter device (12) are in contact with each other, without the filter device (12) being arranged in between; and a closing section (60) designed to close the passage element (50) in an opening and closing openable manner, wherein the passage element (50) has a plurality of first opening sections (53) facing the filter interior (14) and arranged at different positions in a circumferential direction of the filter device (12), and has a first channel section (51) forming an air passage which has an arc-shaped form coaxial to a central axis of the filter device (12) or a full circular form in the circumferential direction of the filter device (12), and has a second channel section (52) the one end of which is connected to the first channel section (51) and the second channel section (52) has at its other end a second opening section (54) which is open to one side of the outside air, wherein the first opening sections (53) are arranged on the first channel section (51).

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