Title:
IMPELLER, MOTOR, AND VACUUM CLEANER
Document Type and Number:
WIPO Patent Application WO/2022/158000
Kind Code:
A1
Abstract:
One aspect of an impeller of the present invention is an impeller that is rotated in the circumferential direction centered around the central axis extending in the axial direction and includes a plurality of first blades arranged circumferentially. Each of the plurality of the first blades includes: a centrifugal blade part that includes a centrifugal blade surface facing the circumferential direction; and an axial flow blade part that includes an axial flow blade surface facing the axial direction and is connected to the radially outer side of the centrifugal blade part. The centrifugal blade surface is a curved surface that is curved toward one side in the circumferential direction from the radially inner side to the radially outer side. The centrifugal blade surface has a radially inner end that is inclined toward the other side in the circumferential direction as it goes radially outward with respect to the radial direction.
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Inventors:
TAKEMOTO SHINJI (JP)
KAJIKAWA SATOSHI (JP)
KAJIKAWA SATOSHI (JP)
Application Number:
PCT/JP2021/021978
Publication Date:
July 28, 2022
Filing Date:
June 09, 2021
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
F04D29/30
Domestic Patent References:
| WO2018062468A1 | 2018-04-05 |
Foreign References:
| US20160134174A1 | 2016-05-12 | |||
| JP2015203369A | 2015-11-16 | |||
| JP2020084815A | 2020-06-04 | |||
| US6171078B1 | 2001-01-09 |
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