PERMANENT MAGNET TYPE ROTARY ELECTRIC MACHINE AND COMPRESSOR USING SAME

WIPO Patent Application WO/2018/096887

A1

The purpose of the present invention is to obtain a compact and low-noise permanent magnet type rotary electric machine having high efficiency. The permanent magnet type rotary electric machine is provided with: a stator core having multiple teeth and slots; a stator having armature windings; a rotor core; and a rotor having multiple permanent magnets embedded in the rotor core. The stator is provided with arc sections to be fixed to a frame and stator recess sections formed on the outer peripheral side. The stator recess section is formed into a substantially trapezoidal shape formed by first and second straight parts connected to the arc sections and disposed parallel to the width direction of the tooth, a third straight part formed on the radial inner side and disposed parallel to the width direction of the tooth, and fourth and fifth straight parts connecting the third straight part with the first and second straight parts. When the distance between both slot-inner-side ends of a tooth tip part is defined as L1, the width of a tooth is defined as L2, and a straight line connecting intersecting points of the arc sections disposed on both sides across a stator recess section with the stator recess section is defined as L3, the stator recess section is configured to satisfy a relationship of "L2 < L1 < L3."

TAKAHATA RYOUICHI (JP)
ADACHI TAKAMASA (JP)
NAKANO YASUNORI (JP)
NAKAMURA SATOSHI (JP)

PCT/JP2017/039503

May 31, 2018

November 01, 2017

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HITACHI JOHNSON CONTROLS AIR CONDITIONING INC (JP)

H02K1/16; H02K1/26; H02K21/14

JP2002142390A	2002-05-17
CN104333153A	2015-02-04
JP2014217189A	2014-11-17
JP2005080418A	2005-03-24
JP2009299676A	2009-12-24
JP2002078255A	2002-03-15

POLAIRE I.P.C. (JP)

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