Filtering device for vacuum cleaner

a filtering device and vacuum cleaner technology, applied in the field of vacuum cleaners, can solve the problems of deteriorating suction force, difficult discharge, and filter cleaning or replacement periodicity
US20050217067A1Inactive Publication Date: 2005-10-06LG ELECTRONICS INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
LG ELECTRONICS INC
Publication Date
2005-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

A filtering device for a vacuum cleaner comprises: a casing having a collecting space therein, a suction opening through which air including dust is sucked and a discharge opening through which purified air is discharged; a filter installed at the internal space of the casing, for filtering dust from air sucked through the suction opening; and a filter cleaning unit disposed to encompass an outer circumferential surface of the filter, for cleaning the filter by being rotated by a rotation force of air sucked through the suction opening. Accordingly, the filtering device can remove fine dust attached to the filter in a cleaning operation, thereby preventing a channel of the filter from being closed with the dust.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a vacuum cleaner, and more particularly, to a filtering device for a vacuum cleaner capable of removing dust attached to a filter in operation of a cleaner.

[0003] 2. Description of the Background Art

[0004] In general, a vacuum cleaner is an electronic device for cleaning an indoor space such as a room, an office or the inside of a car. Undesired impurities such as dust, which exists at home or in a car can be removed by using a suction force of the vacuum cleaner.

[0005] FIG. 1 is a perspective view showing a structure of a general vacuum cleaner.

[0006] As shown therein, a general vacuum cleaner includes a cleaner main body 1 and a suction head 2 connected to the cleaner main body 1 by a suction hose 3 and an extension pipe 4, to which dust and foreign substances are sucked from a floor.

[0007] The cleaner main body 1 includes a suction force generating part (not shown) for generat...

Claims

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