Dust collector and vacuum cleaner having the same
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United States of America Patent
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Apr 30, 2019
Grant Date -
Oct 19, 2017
app pub date -
Apr 14, 2017
filing date -
Apr 14, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A dust collector includes a primary cyclone unit to separate dust from air introduced from outside dust collector and a secondary cyclone unit includes axial cyclones which separate fine dust from air introduced in an axial direction. The secondary cyclone unit includes a first group of axial cyclones disposed along a circumference of a first circle so as to contact an inner circumferential surface of an inner case, and formed to be partially spaced apart from the inner circumferential surface of the inner case to form first passages therebetween; and a second group of axial cyclones disposed to contact each other along a circumference of a second circle concentric with the first circle and smaller than the first circle, and formed to contact some of the first group of axial cyclones and to be spaced apart from others of the first group axial cyclones to form second passages therebetween.
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