Dust collecting apparatus for vacuum cleaner and vacuum cleaner including same
US10898045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2016 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Jul 19, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/1666
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
The present invention provides a dust collecting apparatus for a vacuum cleaner, comprising: a first cyclone installed in a first case and configured to separate dust from air introduced thereinto together with foreign substances and to discharge the separated dust to a first dust storage unit; a second cyclone mounted above the first cyclone and configured to separate fine dust from the air from which the dust is separated by the first cyclone and to discharge the separated fine dust to a second dust storage unit; a compression device configured such that at least a part thereof performs normal rotation in one direction and reverse rotation in the direction opposite to that of the normal rotation along the outer peripheral surface of a second case having the second dust storage unit therein to compress the dust stored in the first dust storage unit; a screw rotatably installed above the compression device and having a guide vane spirally extending along the outer periphery thereof to guide the collection of dust into the first dust storage unit; a driving unit that transmits a driving force to the compression device to selectively enable the normal rotation and the reverse rotatio…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.