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Patent Searching and Data


Title:
STATOR, ELECTRIC MOTOR, COMPRESSOR, AND AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/163021
Kind Code:
A1
Abstract:
This stator has a stator core and first and second coils disposed in a slot of the stator core. The first coil has a conductor formed of a first metal, and the second coil has a conductor formed of a second metal having a lower electric resistivity than the first metal. The slot has: a slot opening portion opening at an inner periphery of the stator core; a curved slot bottom portion positioned radially outside with respect to the slot opening portion; and first and second side portions positioned between the slot opening portion and the slot bottom portion and facing each other circumferentially. In a plane orthogonal to an axial line, a line connecting a boundary between the slot bottom portion and the first side portion and a boundary between the slot bottom portion and the second side portion is defined as a first line. A region enclosed by the first line and the slot bottom portion is defined as a first region. In the slot, a region radially outside the slot opening portion and radially inside the first line is defined as a second region. An area S1 of the first region, a total section area A1 of the first coil within the first region, an area S2 of the second region, and a total section area A2 of the first coil within the second region satisfy the relationship (A1/S1) > (A2/S2).

Inventors:
TSUKAMOTO Emi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
YABE Koji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2018/006204
Publication Date:
August 29, 2019
Filing Date:
February 21, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H02K3/02; H02K3/12
Domestic Patent References:
WO2014188466A12014-11-27
Foreign References:
JPH10174330A1998-06-26
JP2010183741A2010-08-19
Attorney, Agent or Firm:
MAEDA Minoru et al. (MAEDA & YAMAGATA, Koda Bldg. 4F 16-2, Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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