Centrifugal fan design to decrease noise and slim down the fan
US10871171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2017 |
| Grant date | Dec 22, 2020 |
| Priority date | — |
| Expiry date | Oct 30, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/4226
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A centrifugal fan comprises a rotor that has a rotor yoke, an impeller that has a blade and is coupled to the outer periphery of the rotor yoke, a motor that rotates the rotor and a casing that has a suction opening and a discharge opening, and houses the rotor, the impeller, and the motor. The impeller rotating together with the rotor discharges air sucked in through the suction opening to the outside of the casing through the discharge opening. An inner periphery part of the blade on the rotor yoke side extends to the inner periphery side, in such a manner as to overlap with an outer peripheral surface of the rotor yoke in the axial direction of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.