Optional device for electrical appliance
US9936604B2 · kind B2 · utility
1Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2016 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jun 4, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2279/45
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An option device for an electrical appliance of the invention is provided with a filter for purifying exhaust air from the electrical appliance, and an electric fan, wherein the air flow resistance in an external air inlet port formed independently of a suction port for sucking exhaust air from the electrical appliance is adjustable. According to this configuration, it is easy to secure balance between the exhaust air flow rate of the electrical appliance and the suction force by the electric fan without variably controlling the rotational speed of the electric fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.