Vacuum cleaner cyclone with helical cyclone expansion region
US8997310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2012 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Apr 26, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/1666
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum cleaner dirt collection assembly having a housing, an air inlet and air outlet connected to the housing and a cyclone chamber inside the housing. The cyclone chamber has top and bottom walls, and an outer wall joining the top and bottom walls to form a generally enclosed space. The outer wall has a helical guide channel extending radially outward from the adjacent portion of the outer wall. An inner wall, located inside the enclosed space, has a generally cylindrical or frustroconical surface having one or more openings fluidly connecting the enclosed space to the air outlet. A separator plate is located inside the enclosed space at a location between the top and bottom walls. The separator plate extends towards the outer wall and is spaced from the outer wall by a gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.