Invention Grant
- Patent Title: Electric blower, electric vacuum cleaner, and hand dryer
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Application No.: US16970120Application Date: 2018-02-28
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Publication No.: US11268532B2Publication Date: 2022-03-08
- Inventor: Kazuchika Tsuchida , Naho Adachi , Masaya Teramoto , Mitsumasa Hamazaki , Kazunori Hatakeyama
- Applicant: Mitsubishi Electric Corporation
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Posz Law Group, PLC
- International Application: PCT/JP2018/007400 WO 20180228
- International Announcement: WO2019/167153 WO 20190906
- Main IPC: F04D25/06
- IPC: F04D25/06 ; F04D29/056 ; A47L5/28 ; F04D29/28 ; F04D29/44 ; F04D29/58 ; H02K9/06 ; F04D29/42

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.
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