Document Type and Number:
Japanese Patent JPWO2021186676
Kind Code:
A1
Abstract:
An impeller connected to a motor having a drive shaft includes a back plate having a boss having a shaft hole through which the drive shaft is inserted, a ring-shaped rim provided to face the back plate, and a plurality of blades connected to the back plate and the rim and arranged along a circumferential direction of the back plate about the rotation shaft. The back plate includes a first surface portion on which the plurality of blades are formed, a second surface portion provided at a region between the boss and the first surface portion and depressed from the first surface portion in an axial direction of the rotation shaft, and a plurality of projections provided at the second surface portion and extending in the axial direction.
Application Number:
JP2022507965A
Publication Date:
September 23, 2021
Filing Date:
March 19, 2020
Export Citation:
Domestic Patent References:
| JPS54165804U | 1979-11-21 | |||
| JP2012166658A | 2012-09-06 | |||
| JPS5996397U | 1984-06-29 | |||
| JP2000240590A | 2000-09-05 |
Foreign References:
| WO2019188363A1 | 2019-10-03 | |||
| DE102016002832A1 | 2017-09-14 |