ROTOR, ELECTRIC MOTOR, BLOWER, AND AIR CONDITIONING DEVICE

Title:

ROTOR, ELECTRIC MOTOR, BLOWER, AND AIR CONDITIONING DEVICE

Document Type and Number:

WIPO Patent Application WO/2022/054149

Kind Code:

A1

Abstract:

This rotor (1) has a rotary shaft (10), a first permanent magnet (20) supported on the rotary shaft (10), and a second permanent magnet (30) supported on the outer circumference of the first permanent magnet (20) and having magnetic poles stronger than the magnetic poles of the first permanent magnet (20). The second permanent magnet (30) has a plurality of magnet sections (31) disposed with intervals therebetween in the circumferential direction of the first permanent magnet (20). A first width (W1), which is the width in the circumferential direction of each magnet section (31) among the plurality of magnet sections (31) at a center section (20c) of the first permanent magnet (20) in the axial direction of the rotary shaft (10), is greater than a second width (W2), which is the width in the circumferential direction of each magnet section (31) at an end section (20d) of the first permanent magnet (20) in the axial direction.

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Inventors:

WATANABE TAKANORI (JP)
TSUCHIDA KAZUCHIKA (JP)
SHIMOKAWA TAKAYA (JP)
TAKAHASHI RYOGO (JP)
TAMURA NAOKI (JP)

Application Number:

PCT/JP2020/034033

Publication Date:

March 17, 2022

Filing Date:

September 09, 2020

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02K1/27

Domestic Patent References:

WO2020129123A1	2020-06-25
WO2018016067A1	2018-01-25
WO2013111301A1	2013-08-01

Foreign References:

CN104836353A	2015-08-12
JPH0731120A	1995-01-31
JP2009027842A	2009-02-05
JPS5992759A	1984-05-29
JPS6165868U	1986-05-06
US20190027984A1	2019-01-24
JP2001157393A	2001-06-08
CN110474456A	2019-11-19
JP2005151757A	2005-06-09
JP2011087393A	2011-04-28

Other References: