Compressor and method of plate installation

Abstract

A compressor has an electric motor element section having a rotor and a stator provided on the outer peripheral side of the rotor. An oil separation plate is installed on an upper end surface of the rotor with an end plate in between. The end plate is provided with a projection. Through-holes in which the projection is fitted are provided in the oil separation plate as a separate plate member installed on the end plate. Portions of the projection that project from the through holes of the oil separation plate are crushed to integrate the oil separation plate and the end plate. A recess is provided in the upper face of the projection, and the recess allows deformation, at the time of the crush, of the projecting portions of the projection.

1 . A compressor, comprising: 
 a closed container;    a compressor element section housed in a lower portion of the closed container; and    an electric motor element section housed in an upper portion of the closed container and including 
 a rotor,  
 a stator disposed on an outer periphery of the rotor,  
 an end plate provided on an end surface of the rotor, and  
 an oil separation plate installed on the end plate and forming a through hole,  
 the end plate including a main section, and a projection projecting from the main section and fitted in the through hole, the projection including a projected part projected from the through hole of the oil separation plate and crushed to integrate the oil separation plate with the end plate, and a recess on an upper face of the projection.  
   
   
   
       2 . The compressor according to  claim 1 , wherein the projection is partly crushed to remain a portion of the recess.  
   
   
       3 . The compressor according to  claim 1 , wherein the recess on the projection has a cone shape with a diameter that gradually decreases downward.  
   
   
       4 . The compressor according to  claim 1 , wherein a material of the projection is die casting aluminum alloy.  
   
   
       5 . A method of plate installation, comprising: 
 mounting a plate member on a supporting base plate by fitting a projection of the supporting base plate into a through hole of the plate member to project a top end part of the projection from the through hole, the supporting base plate having a projection with a recess on an upper face of the projection and being made of aluminum die casting alloy; and    crushing a projected part of the projection from the through hole except for a portion of the recess on the projection by applying a downward pressing force to the projected part so as to integrate the plate member with the supporting base plate.