Title:
ELECTRIC BLOWER
Document Type and Number:
WIPO Patent Application WO/2021/235197
Kind Code:
A1
Abstract:
An electric blower (11) is provided with an electric motor (12) including a rotating shaft, an impeller (13) which is fixed to the rotating shaft and which is rotationally driven by the electric motor, and an air guide (14) into which air discharged from the impeller flows, wherein: the impeller includes a rear surface shroud (16), a front surface shroud (17) disposed spaced apart from the rear surface shroud, an intake port (18) provided in a central portion of an upper surface of the front surface shroud, a centrifugal fan (20) consisting of a plurality of first blade portions (19) which are attached to the rear surface shroud and which are arranged at equal intervals in the circumferential direction, and an axial flow fan (22) positioned inward of the centrifugal fan in the radial direction; the centrifugal fan and the axial flow fan rotate in the circumferential direction; and the axial flow fan faces upward in the direction of the rotating shaft, and comprises a plurality of second blade portions (axial flow fan) (21) which are inclined relative to the rotating shaft and which are arranged at equal intervals in the circumferential direction.
Inventors:
YOKOTE SHIZUKA
Application Number:
PCT/JP2021/016756
Publication Date:
November 25, 2021
Filing Date:
April 27, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
F04D29/44; F04D29/28
Foreign References:
| JPS6013996A | 1985-01-24 | |||
| JP2013029033A | 2013-02-07 | |||
| JPS5127108A | 1976-03-06 | |||
| CN101566168A | 2009-10-28 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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