Air purifier
US7896957B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2009 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air purifier includes a shell with an air inlet and an air outlet. An electric field filter, an air passage and a blower are disposed inside the shell. The electric field filter includes a filter frame disposed at the air outlet and a grid base disposed under the filter frame. A filter is provided inside the filter frame. One end of the air passage connects with the grid base and the other end connects with the blower. The blower is disposed at the air inlet. The filter frame and the grid base are integrated as a hermetic whole. Due to the integrated configuration of the filter frame and the grid base, when removing out the electric field filter, the power is cut automatically. This effectively prevents an occurrence of the electroshock, and improves safety performance of the purifier. Furthermore, air leakage can be greatly reduced, for there is no gap between the filter frame and the grid base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.