Fan with synchronously switch for rotation directions
US11408431B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Dec 26, 2018 |
| Grant date | Aug 9, 2022 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a fan. The fan includes a support, a first motor, a first blade, a second motor, a second blade and an electronic control board. The first motor and the second motor are both installed on the support. The first motor is coaxial with the second motor. The first motor has a first rotation shaft and the second motor has a second rotation shaft. The first blade is installed on the first rotation shaft. The second blade is installed on the second rotation shaft. A torsion direction of the first blade is opposite to a torsion direction of the second blade. The electric control board is electrically connected to the first motor and the second motor, and includes a speed ratio adjustment device. The fan can provide a variety of air outlet modes and can quickly adjust between different air outlet modes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.