Title:
IMPELLER AND BLOWER DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/003706
Kind Code:
A1
Abstract:
This blower device is provided with an impeller which is rotatable about a vertically extending center axis, and a motor which drives the impeller. The impeller is provided with a first impeller and a second impeller which is connected to the first impeller. The first impeller has a base and also has a plurality of circumferentially arranged first blades. The base has: a cup section having a closed upper axial end; and a flange section extending radially outward from the lower axial end of the cup section. The second impeller has: a shroud which has an annular shape centered on the center axis and which axially faces the upper surface of the flange section; and a plurality of circumferentially arranged second blades. Each of the first blades protrudes axially upward from the flange section. Each of the second blades protrudes axially downward from the shroud. At least one of the second blades is located circumferentially between adjacent first blades.
Inventors:
YOSHINO SHINGO (JP)
NOMURA MASASHI (JP)
HAMANO SHINSUKE (JP)
NOMURA MASASHI (JP)
HAMANO SHINSUKE (JP)
Application Number:
PCT/JP2018/019296
Publication Date:
January 03, 2019
Filing Date:
May 18, 2018
Export Citation:
Assignee:
NIDEC CORP (JP)
International Classes:
F04D29/62; F04D29/28
Foreign References:
| US3285187A | 1966-11-15 | |||
| JP2008111393A | 2008-05-15 | |||
| JP2000291589A | 2000-10-17 | |||
| JPH1122694A | 1999-01-26 |
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