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Title:
CYCLONE UNIT AND VACUUM CLEANER COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2019/065085
Kind Code:
A1
Abstract:
Provided are a cyclone unit and vacuum cleaner comprising same, having dust collection performance enhanced beyond what has gone before. Provided is a cyclone unit, which comprises a cylindrical-container shaped outer tube (21) extending along an axis and comprising a suction port for suctioning, in a direction tangential to said outer tube (21), outside air including dust, and an inner tube unit (41) positioned within the outer tube (21) on the same axis, connected to the interior of the outer tube (21) at one end of said axis, and comprising a cylinder part (42) for discharging to the outside the air within the outer tube, and in which the suctioned air is rotated within the outer tube (21) and the dust is separated from the air using centrifugal force. The cylinder part (42) comprises: a first tube part (42a), comprising a wall part connected to one end of the outer tube and continuous therewith; and a second tube part (42b) for interior-exterior communication in the radial direction thereof. A protrusion part (48) is formed by a region of a portion of the first tube part (42a) in the circumference direction thereof being outwardly enlarged in the radial direction thereof. The forming of the protrusion part (48) allows avoiding a phenomenon of separation with regard to an airstream rotating within the outer tube (21), and enhances dust collection performance.

Inventors:
ICHIHASHI NAOTO (JP)
Application Number:
PCT/JP2018/032391
Publication Date:
April 04, 2019
Filing Date:
August 31, 2018
Export Citation:
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Assignee:
KOKI HOLDINGS CO LTD (JP)
International Classes:
A47L9/16; A47L9/12; B01D50/00; B04C5/04; B04C5/10; B04C5/12
Foreign References:
JP2017014850A2017-01-19
JP2006020833A2006-01-26
JP2014128393A2014-07-10
JPH10384A1998-01-06
JP2003070700A2003-03-11
JP2006204550A2006-08-10
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