Blower and air-conditioning apparatus including the same
US10634168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2015 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Feb 13, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/304
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A blower includes a volute shaped casing having an air inlet, and an impeller including a disk-shaped backing plate, a ring-shaped rim, and a plurality of blades supported between the backing plate and the rim. The impeller is housed in the casing. Each of the blades includes a first blade segment adjacent to the backing plate, and a second blade segment provided between the first blade segment and the rim. Each of the blades has a blade outlet angle at a trailing edge of the second blade segment different from a blade outlet angle at a trailing edge of the first blade segment. At least one of a pressure surface of the second blade segment and a suction surface of the second blade segment includes a flat surface extending toward a leading edge of the second blade segment from the trailing edge of the second blade segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.