发明名称 |
Linear motor and linear compressor |
摘要 |
<p>A linear motor comprising prismatic inner yokes each constructed in a manner that a large number of sheets each having a generally rectangular configuration and having a high magnetic permeability are piled up each other and outer yokes each constructed in a manner that a number of sheets each having a generally rectangular configuration and having a high magnetic permeability are piled up each other. Each of coils is wound around a central portion of three magnetic pole portions of the outer yoke to alternately establish different magnetic poles along a direction of an axis of the linear motor. A surface of the outer yoke, holding the magnetic pole portions, is disposed in an opposed relation to the inner yoke to define a predetermined gap therebetween so that the inner yoke and the outer yoke form each of a plurality of yoke blocks. The yoke blocks are placed around the axis so that the sheet piling-up direction is perpendicular to a diametrical direction of a shaft. In addition, a moving element having a pair of permanent magnets magnetized radially so that their magnetizing directions are opposite to each other is movably located between the inner yoke and the outer yoke at a predetermined interval along the axis. This construction improves the motor efficiency and facilitates the manufacturing of the motor. <IMAGE></p> |
申请公布号 |
EP0954086(A2) |
申请公布日期 |
1999.11.03 |
申请号 |
EP19990102230 |
申请日期 |
1999.02.04 |
申请人 |
MATSUSHITA REFRIGERATION COMPANY |
发明人 |
YAMAMOTO, HIDEO;SHIBUYA, KOYO;HAMAOKA, KOJI |
分类号 |
H02K33/16;(IPC1-7):H02K33/16 |
主分类号 |
H02K33/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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