Electric blower, electric vacuum cleaner, and hand dryer
US11268532B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2018 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Feb 28, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electric blower includes a motor including a rotor having a rotation shaft, and a stator provided to surround the rotor, a moving blade mounted at one end side of the rotation shaft in the axial direction of the rotation shaft, a bearing portion provided between the moving blade and the stator in the axial direction and rotatably supporting the rotation shaft, and a frame. The frame includes a motor housing portion housing the stator, a bearing housing portion housing the bearing portion, a wall formed between the motor housing portion and the bearing housing portion and facing the moving blade, and a hole passing through the wall. The electric blower further includes a first air path outside the frame, and a second air path inside the frame. An air volume in the first air path is larger than an air volume in the second air path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.