Centrifugal blower, air conditioning apparatus, and refrigerating cycle apparatus
US10718351B2 · kind B2 · utility
6Cited by
0References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2015 |
| Grant date | Jul 21, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/282
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal blower includes a centrifugal fan having a main plate and a side plate facing each other in a direction of a rotation axis, and a casing to house the centrifugal fan. The casing has a peripheral wall extending along an outer circumferential edge of the centrifugal fan, and has a tongue portion at a position on the peripheral wall. A distance between the outer circumferential edge of the centrifugal fan and the tongue portion is smaller on the main plate side of the centrifugal fan than on the side plate side of the centrifugal fan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.