Scroll compressor and method for assembling same

Abstract

A scroll compressor having a housing composed of multiple sub-housings ( 12, 14, 16 ), comprising a motor sub-housing which is equipped with a drive motor with a stator fixed to the housing and a coaxial rotor fixed to a main shaft mounted on one side of the stator by a first main shaft bearing; a bearing sub-housing that adjoins the motor sub-housing on the side facing away from the first main shaft bearing and supports a second main shaft bearing and an orbital guide of a first scroll-type displacement device, which is eccentrically connected to the main shaft and orbits during a rotation of the main shaft and into which a second scroll-type displacement device fixed to the housing engages axially; and a housing cover which adjoins the bearing sub-housing and terminates the housing. The second scroll-type displacement device is directly connected to the bearing sub-housing.

1 . A scroll compressor having a housing composed of a plurality of housing sections, comprising
 a motor housing section in which is configured a drive motor having a housing-fixed stator and a coaxial rotor fixed to a main shaft mounted on one side of the stator by a first main shaft bearing;   a bearing housing section, which adjoins the motor housing section on the side facing away from the first main shaft bearing and which supports a second main shaft bearing as well as an orbital guide of a first spiral displacer, which is eccentrically coupled to the main shaft and orbits in response to the rotation thereof, and into which axially engages a housing-fixed, second spiral displacer;   a housing cover which adjoins the bearing housing section and terminates the housing,   wherein the second spiral displacer is directly connected to the bearing housing section.   
     
     
         2 . The scroll compressor as recited in  claim 1 , wherein the second spiral displacer is screw fastened to the bearing housing section. 
     
     
         3 . The scroll compressor as recited in  claim 2 , wherein the screw fastening is realized by a plurality of screws which extend axially through a wall of the bearing housing section and are screwed in place into threaded holes in the second spiral displacer. 
     
     
         4 . The scroll compressor as recited in  claim 1 , wherein the outer wall of the bearing housing section forms an axial portion of the outer wall of the housing. 
     
     
         5 . The scroll compressor as recited in  claim 1 , wherein the housing cover is fixed to the motor housing section by the bearing housing section or by screws which extend axially through the outer wall thereof. 
     
     
         6 . The scroll compressor as recited in  claim 1 , wherein the contact regions between the motor housing section and the bearing housing section, on the one hand, and between the bearing housing section and the housing cover, on the other hand, are each sealed by a crimp seal. 
     
     
         7 . A method for assembling a scroll compressor according to  claim 1 , comprising the steps of:
 providing a module in a separate process, including the bearing housing section having the preassembled, second main shaft bearing ( 28 ), the preassembled main shaft, and the rotor fixed thereto as well as the preassembled, first spiral displacer and the second spiral displacer directly connected to the bearing housing section, and rotationally driving the main shaft when the bearing housing section is fixed, measuring imbalances and balancing the module;   providing the motor housing section having the preassembled stator and the preassembled first main shaft bearing and inserting the balanced module into the motor housing section, the main shaft being inserted into the first main shaft bearing, so that the rotor is positioned concentrically within the stator while maintaining an air gap;   screw-fastening the housing cover to the motor housing section, the bearing housing section being sealingly clamped between the motor housing section and the housing cover.   
     
     
         8 . The method as recited in  claim 6 , wherein the module is balanced by removing rotor-fixed balancing weights or by removing material therefrom.