Air purifying device
US11198088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2016 |
| Grant date | Dec 14, 2021 |
| Priority date | — |
| Expiry date | May 6, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present utility model discloses an air-purifying apparatus. The air-purifying apparatus comprises a filter screen, filter screen type determining component, and filter screen service life determining component. The filter screen is for filtering particles and at least one of specific chemical matters in the air. The filter screen determining component is configured to determine a type of the filter screen. The filter screen service life determining component is configured to determine whether the filter screen needs to be changed according to the determined type of the filter screen and a use condition of the filter screen. With the air-purifying device of the present disclosure, remaining service lives of the filter screens of different types or specifications may be obtained, then a user may be prompted when the filter screen needs to be changed, thereby allowing the user to maintain a good air-purifying effect at any time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.