Impeller and fluid machine
US9874219B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Jun 13, 2013 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Mar 6, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/305
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided is an impeller and a fluid machine which have an annular hub (21) and a plurality of blades (22) radially arranged along an outer peripheral surface of the hub (21). On a pressure surface (P1) of the blade (22), there are provided a first pressure surface (31) extending from the hub (21) side at an angle of 90 degrees or less with respect to the forward direction of the rotation direction (A), and a second pressure surface (32) extending from the first pressure surface (31) at an angle of more than 90 degrees with respect to the forward direction of the rotation direction (A). This configuration reduces a low-energy fluid stagnating on a suction surface side of the blade, achieving higher impeller efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.