Title:
BLOWER AND CLEANER
Document Type and Number:
Japanese Patent JP2019068687
Kind Code:
A
Abstract:
To provide a technique of efficiently cooling a circuit board included in a blower and components on the circuit board.SOLUTION: A blower 1 includes: an impeller 50 fixed to a shaft 111 arranged along a vertically extending center axis and rotatable around the center axis; a motor 10 for rotating the impeller 50; a motor housing 20 arranged on a radial outer side of the motor 10; a blower case 60 arranged on a radial outer side compared to the motor housing 20; and a circuit board 80 arranged on a side lower than a lower end of the motor housing 20. A flow passage 61 communicating with the impeller 50 is arranged between a radial outer surface of the motor housing 20 and a radial inner surface of the blower case 60. The circuit board 80 has a circuit board through-hole 82 axially penetrating on a radially further inner side than a radial outer surface of the motor housing 20.SELECTED DRAWING: Figure 6
Inventors:
FUJIWARA HARUKAZU
SAWADA TOMOYOSHI
ENOMOTO YOICHI
MASUI YUKI
SAWADA TOMOYOSHI
ENOMOTO YOICHI
MASUI YUKI
Application Number:
JP2017194507A
Publication Date:
April 25, 2019
Filing Date:
October 04, 2017
Export Citation:
Assignee:
NIHON DENSAN KK
International Classes:
H02K11/30; A47L9/00; F04D29/00; F04D29/58; H02K5/20; H02K5/22; H02K7/14; H02K9/02