Low noise air cleaner
US6361590B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Jan 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A portable air cleaner including a housing defining an air inlet, an air outlet, and an air flow path therebetween, a centrifugal blower retained within the air flow path and operable to draw air through the inlet and a filter retained within the housing and disposed to transmit air circulating in the air flow path out of the outlet. Also included is a conveyor surrounding the blower and defining a scroll shaped passage having one end disposed to receive air from the blower and an opposite end disposed to discharge air into the filter, the conveyor being shaped and arranged to obstruct all rectilinear paths between the blower and the opposite end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.