Scroll compressor

Abstract

A scroll compressor includes a shell; an orbiting scroll; a fixed scroll, the orbiting scroll and the fixed scroll forming a compression component; a housing, configured to support the fixed scroll, with a gas passage throughout the housing and leading to the compression component; a motor below the housing, including: a rotor; a stator; a drive shaft connected with the orbiting scroll; a motor supporting shell tube, wherein the tube is in the shell, an upper end of the tube is connected with the housing, and the rotor and the stator are in the tube; a first suction inlet, at a lower portion of the shell; a second suction inlet, at a lower portion of the motor tube; and a first passage formed by a gap between the shell and the tube, gas from the first suction inlet entering the compression component through the gas passage along the first passage.

What is claimed is: 
     
         1 . A scroll compressor, comprising:
 a shell;   an orbiting scroll disposed in the shell;   a fixed scroll disposed in the housing shell, the orbiting scroll and the fixed scroll together forming a compression component;   a housing, configured to support the fixed scroll, and configured with a gas passage throughout the housing and leading to the compression component;   a motor disposed below the housing and comprising: a rotor; a stator; a drive shaft connected with the orbiting scroll; and a motor supporting shell tube, wherein the motor supporting shell tube is disposed in the shell, an upper end of the motor supporting shell tube is connected with the housing, and the rotor and the stator are disposed in the motor supporting shell tube;   a first suction inlet, configured at a lower portion of the shell;   a second suction inlet, configured at a lower portion of the motor supporting shell tube; and   a first passage formed by a gap between the shell and the motor supporting shell tube, wherein gas sucked from the first suction inlet enters the compression component through the gas passage formed in the housing along the first passage.   
     
     
         2 . The scroll compressor according to  claim 1 , further comprising:
 a second passage formed by a gap between the rotor and the stator, wherein the gas sucked from the first suction inlet enters the second passage via the second suction inlet and enters the compression component through the gas passage formed in the housing along the second passage.   
     
     
         3 . The scroll compressor according to  claim 1 , further comprising:
 an oil sump disposed at the bottom of the shell,   wherein lubricating oil from the compression component returns to the oil sump through the first passage.   
     
     
         4 . The scroll compressor according to  claim 1 , further comprising:
 a sealing part, configured to seal a lower end of the motor supporting shell tube.   
     
     
         5 . The scroll compressor according to  claim 1 , further comprising:
 a key portion formed on one of the fixed scroll and the housing, and a recessed portion formed on the other one of the fixed scroll and the housing to be fit with the key portion; wherein the key portion and the recessed portion are configured to align the fixed scroll with the housing in a radial direction and fix relative positions of the fixed scroll and the rack in a radial direction.   
     
     
         6 . The scroll compressor according to  claim 1 , further comprising:
 a counterweight, wherein the counterweight is located in the motor supporting shell tube, connected with the drive shaft of the motor, located between the housing and the motor in an axial direction, and located between the drive shaft and a sidewall of the motor supporting shell tube in a radial direction.   
     
     
         7 . The scroll compressor according to  claim 6 , wherein
 the drive shaft of the motor is a stepped shaft, and comprises a first section located at an end portion and connected with the orbiting scroll, a second section adjacent to the first section, and a third section adjacent to the second section, wherein the diameter of the first section is less than that of the second section, the diameter of the second section is less than that of the third section, and the counterweight is mounted on the second section of the drive shaft.   
     
     
         8 . The scroll compressor according to  claim 6 , wherein
 the counterweight comprises:   a hub portion, wherein the counterweight is mounted on the drive shaft through the hub portion,   a fan-shaped section radially extending outwards from the hub portion, and   an edge section at a radial outer edge of the fan-shaped section.   
     
     
         9 . The scroll compressor according to  claim 8 , wherein
 the edge section extends to an axial direction from the radial outer edge of the fan-shaped section.   
     
     
         10 . The scroll compressor according to  claim 1 , further comprising:
 a support component; wherein the support component is disposed in the motor supporting shell tube and configured to support a lower end of the drive shaft of the motor, and a peripheral portion of the support component is connected with the motor supporting shell tube.   
     
     
         11 . The scroll compressor according to  claim 1 , further comprising:
 an oil sump disposed at the bottom of the housing, and   a support component;   wherein the support component is disposed in the motor supporting shell tube and configured to support a lower end of the drive shaft of the motor;   wherein the support component comprises an annular section which is located in the center and which has a center hole, and a plurality of arm portions radially extending outwards from the annular section; wherein and at least one part of each of the plurality of arm portions is immersed in lubricating oil in the oil sump.   
     
     
         12 . The scroll compressor according to  claim 11 , wherein
 end portions on peripheral sides of the plurality of arm portions are connected with the motor supporting shell tube.   
     
     
         13 . The scroll compressor according to  claim 1 , wherein the shell is a cylindrical housing without a neck-in part.