Dust collector and vacuum cleaner having the same
US10271701B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2017 |
| Grant date | Apr 30, 2019 |
| Priority date | — |
| Expiry date | Oct 20, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C2009/004
- WIPO fieldChemical engineering
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.