Impeller for centrifugal fan and centrifugal fan
US11592029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2022 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2240/306
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present application discloses an impeller for a centrifugal fan and a centrifugal fan. The impeller comprises a support member and several vanes. The support member has an inner wall that defines a hollow portion. The several vanes are arranged inside the hollow portion, each of the several vanes is connected with the inner wall and extends along the axial direction of the support member, and the several vanes are arranged along the circumferential direction of the support member. Each of the several vanes is bent and comprises a front edge, a tail edge, a convex suction surface, and a concave pressure surface, the suction surface and the pressure surface are arranged to oppose each other, and the front edge and the tail edge are arranged to oppose each other, wherein the tail edge is connected with the inner wall of the support member, and wherein several protrusions are provided on the suction surface, and the several protrusions are arranged to be close to the front edge. The protrusions can regulate the flow of a fluid immediately when the fluid contacts the vanes. During the flow regulation process, a large vortex in the fluid can be divided into several small vortices. Su…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.