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Title:
ROTOR OF PERMANENT MAGNET EMBEDDED MOTOR, BLOWER, AND COMPRESSOR
Document Type and Number:
WIPO Patent Application WO/2011/096094
Kind Code:
A1
Abstract:
Disclosed is a rotor of a permanent magnet embedded motor, in which when slits are provided to the outer peripheral core section of permanent magnet insertion holes, magnetic flux acting on permanent magnet end sections which can be easily demagnetized is reduced, whereby demagnetization strength has been improved. Specifically disclosed is a rotor of a permanent magnet embedded motor, which is provided with: a rotor core formed by laminating a predetermined number of electromagnetic steel plates punched in a predetermined shape; a plurality of permanent magnet insertion holes which are formed along the outer peripheral section of the rotor core so as to have permanent magnet end section air gaps at both end sections thereof; a plurality of permanent magnets inserted into the permanent magnet insertion holes; and a plurality of slits formed in the outer peripheral core section on the outside of the permanent magnet insertion holes, wherein the spacing between first slits in the radial direction of the permanent magnet end sections and second slits adjacent to the first slits on the magnetic pole center side is narrower than the spacing between the other slits in the outer peripheral core section of the permanent magnet insertion holes among the plurality of slits.

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Inventors:
YABE,Koji (7-3 Marunouchi 2-Chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
矢部 浩二 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
YOSHINO,Hayato (7-3 Marunouchi 2-Chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2010/055182
Publication Date:
August 11, 2011
Filing Date:
March 25, 2010
Export Citation:
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Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-Chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目7番3号 Tokyo, 〒1008310, JP)
YABE,Koji (7-3 Marunouchi 2-Chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
矢部 浩二 (〒10 東京都千代田区丸の内二丁目7番3号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
International Classes:
H02K1/27
Attorney, Agent or Firm:
MIZOI, Shoji (MIZOI INTERNATIONAL PATENT FIRM, NTA Ofuna Building 3rd floor 17-10, Ofuna 2-chome, Kamakura-sh, Kanagawa 56, 〒2470056, JP)
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