Title:
CENTRIFUGAL BLOWER
Document Type and Number:
WIPO Patent Application WO/2022/196243
Kind Code:
A1
Abstract:
[Problem] To provide a centrifugal blower in which a common line junction can be easily insulated from other members and the insulated state of the common line junction can be reliably maintained. A centrifugal blower in which an impeller, a motor for rotating the impeller, and a circuit board 144 for performing drive control of the motor are housed inside a lower casing 112. The motor is disposed on one axial end side of the circuit board 144, and an end cap 160 is provided to the other axial end side of the circuit board 144. The end cap 160 is provided with an inner annular part 162 extending in the axial direction, and a pocket part 163 projecting radially inward from the inner peripheral surface of the inner annular part 162. The motor is a three-phase brushless motor and has a common line junction 143a in which three-phase coils are wound in a star connection. The common line junction 143a protrudes from the circuit board 144 toward the other axial end and is housed in the pocket part 163 of the end cap 160.
Inventors:
FUJITA KAZUHIKO (JP)
Application Number:
PCT/JP2022/006569
Publication Date:
September 22, 2022
Filing Date:
February 18, 2022
Export Citation:
Assignee:
MINEBEA MITSUMI INC (JP)
International Classes:
H02K3/18; F04D29/42; F04D29/60; H02K3/32; H02K7/14; H02K11/33
Foreign References:
| JP2016135076A | 2016-07-25 | |||
| JP2014090572A | 2014-05-15 | |||
| JP2003230257A | 2003-08-15 | |||
| US20190334393A1 | 2019-10-31 | |||
| JP2018200048A | 2018-12-20 |
Attorney, Agent or Firm:
SUENARI, Mikio (JP)
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