ELECTRIC BLOWER, AND ELECTRIC VACUUM CLEANER PROVIDED WITH SAME

WIPO Patent Application WO/2022/107390

A1

The purpose of the present invention is to provide an electric blower capable of improving efficiency of cooling an electric motor.　This electric blower comprises a first axial-flow diffuser blade 23 and a second axial-flow diffuser blade 24 downstream in the axial direction of an impeller having two motor housings installed on an impeller side and an opposite-impeller side. The impeller-side housing 6 integrated with the first axial-flow diffuser blade 23 is fixed to the impeller-side motor housing 6 and disposed so as to cover the periphery thereof. The opposite-impeller-side housing 9 having the second axial-flow diffuser blade 24 is disposed so as to cover the opposite-impeller-side motor housing 10, and the two motor housings have a plurality of opening parts provided in the radial direction. The radial-direction openings of the opposite-impeller-side motor housing 10 are intake ports through which cooling air flows into the electric motor, and the radial-direction openings of the impeller-side motor housing 6 are exhaust ports through which the cooling air in the electric motor flows out.

JPH02267397	ELECTRIC BLOWER
JP2004190569	MULTI-STAGE CENTRIFUGAL COMPRESSOR

SAKAGAMI SEIJI (JP)
HONDA TAKESHI (JP)
YAMAKAMI SHOTA (JP)
ITO TAKAHIRO (JP)
ITO NORIKAZU (JP)

PCT/JP2021/026974

May 27, 2022

July 19, 2021

Click for automatic bibliography generation  

HITACHI GLOBAL LIFE SOLUTIONS INC (JP)

F04D29/58; F04D23/00

WO2016194254A1

2016-12-08

JP2018105269A	2018-07-05
JP2013029034A	2013-02-07

POLAIRE I.P.C. (JP)

View/Download PDF      PDF Help

Previous Patent: WIRING BOARD

Next Patent: SECONDARY BATTERY, SECONDARY BATTERY CONTROL SYSTEM, AND BATTERY PACK