Displacement type compressor

Abstract

A displacement type compressor includes a compressing mechanism section for performing a compression, a motor for driving the compressing mechanism section, and a crankshaft adapted to be driven in rotation by the motor to rotate the compressing mechanism section. The motor includes stator cores and having claw-type magnetic poles formed of a magnetic powder and circumferentially arranged in alternately meshed states, and annular coils and wound in a toric shape around the claw-type magnetic poles. Thus, the displacement type compressor is capable of being at a high speed and has a reduced size.

1 . A displacement type compressor, comprising a compressing mechanism section adapted to perform a compression, a motor for driving said compressing mechanism section, and a crankshaft adapted to be driven in rotation by said motor to rotate said compressing mechanism section, wherein said motor comprises a stator core in which claw-type magnetic poles formed of a magnetic powder are circumferentially arranged in alternately meshed states, and annular coils wound in a toric shape around said claw-type magnetic poles. 
   
   
       2 . A displacement type compressor according to  claim 1 , wherein each of said claw-type magnetic poles has a resinous film formed thereon. 
   
   
       3 . A displacement type compressor according to  claim 1 , wherein said compressing mechanism section comprises a fixed scroll and an orbiting scroll meshed with each other to perform the compression by the orbiting movement of said orbiting scroll. 
   
   
       4 . A displacement type compressor according to  claim 1 , wherein said stator core is fixed to a toric core frame which is disposed within said displacement type compressor. 
   
   
       5 . A displacement type compressor according to  claim 1 , wherein said compressing mechanism section and said motor are disposed between two shaft support portions on which said crankshaft is rotatably supported. 
   
   
       6 . A displacement type compressor according to  claim 1 , further including a balance weight disposed between said compressing mechanism section and said motor and having an outside diameter smaller than an inside diameter of said stator core. 
   
   
       7 . A displacement type compressor according to  claim 1 , further including a balance weight disposed on the side of said compressing mechanism section opposite from said motor. 
   
   
       8 . A displacement type compressor according to  claim 1 , wherein said compressing mechanism section comprises a fixed scroll and an orbiting scroll meshed with each other to perform the compression by the orbiting movement of said orbiting scroll, and said crankshaft is passed through said orbiting scroll and said fixed scroll and rotatably supported on portions of said orbiting scroll and said fixed scroll through which said crankshaft is passed. 
   
   
       9 . A displacement type compressor, comprising a compressing mechanism section adapted to perform a compression, a motor for driving said compressing mechanism section, a crankshaft adapted to be driven in rotation by said motor to rotate said compressing mechanism section, and two shaft support portions on which said crankshaft is rotatably supported, wherein
 said motor comprises a stator core in which claw-type magnetic poles formed of a magnetic powder are circumferentially arranged in alternately meshed states, and annular coils wound in a toric shape around said claw-type magnetic poles,   said compressing mechanism section comprises a fixed scroll and an orbiting scroll meshed with each other to perform the compression by the orbiting movement of said orbiting scroll,   said compressing mechanism section and said motor are disposed between said shaft support portions, and   a balance weight is disposed between said compressing mechanism section and said motor and has an outside diameter smaller than an inside diameter of said stator core.