Cyclonic dust collection unit and filter structure thereof
US7731769B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2005 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | Dec 7, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/1641
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
Provided is a cyclonic dust collection unit for conveniently removing a foreign object filtered therein. The cyclonic dust collection unit includes: a first filtering chamber for filtering a first foreign object having a first size using a cyclone airflow; a second filtering chamber for filtering a second foreign object having a second size smaller than the first size of the first foreign object, the second foreign object being contained in the air passed through the first filtering chamber; a foreign object storing chamber for storing the first and/or second foreign object(s) separated through the first and second filtering chambers; a filter disposed in the first filtering chamber, for separating the first foreign object on an outer surface thereof; and a cutaway hole formed in a longitudinal direction thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.