Cyclone separation device and electric vacuum cleaner
US9155435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Jul 3, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C5/185
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dust collection unit includes a swirl chamber, dust collection chambers, a discharge pipe, an inlet pipe, a bypass inlet, and a bypass inlet airflow passage. The swirl chamber swirls, along a side wall, dust-containing air having entered from a primary inlet and a secondary inlet having a smaller opening area than the primary inlet, and separates dust from the dust-containing air. The dust separated by the swirl chamber is collected by the dust collection chambers. A discharge pipe has a discharge opening. The inlet pipe allows the dust-containing air to flow from the primary inlet into the swirl chamber. A bypass inlet is formed in the inlet pipe. The bypass inlet airflow passage allows the dust-containing air in the inlet pipe having entered from the bypass inlet to flow from the secondary inlet into the swirl chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.