Scroll compressor

Abstract

A scroll compressor is provided, which includes an outer shell including a gas inlet, an inner shell in the outer shell, a motor in the inner shell and including a stator and a rotor in the stator, and a scroll component. A compression chamber for compressing refrigerant gas is formed in the scroll component, and is configured to compress the refrigerant gas via the motor. An air gap is provided between the stator and the rotor and/or between the stator and the inner shell. An upper chamber is formed in the inner shell between the motor and the scroll component, and includes an upper inlet hole. The refrigerant gas entering from the gas inlet has a lower temperature than the motor, and enters the compression chamber partially through the upper inlet hole and partially through the air gap to absorb heat of the motor.

1 . A scroll compressor, comprising:
 an outer shell, provided with a gas inlet;   an inner shell, arranged in the outer shell;   a motor, arranged in the inner shell and comprising a stator and a rotor arranged in the stator; and   a scroll assembly, provided with a compression chamber for compressing a refrigerant gas and configured to compress the refrigerant gas under control of the motor, wherein   an air gap is provided between the stator and the rotor and/or between the stator and the inner shell, an upper chamber is formed in the inner shell between the motor and the scroll assembly, and the upper chamber is provided with an upper inlet hole; a lower chamber is formed in the inner shell on a side of the motor away from the scroll assembly, the lower chamber is provided with a lower ventilation hole;   refrigerant gas entering from the gas inlet has a lower temperature than the motor, and the refrigerant gas entering from the gas inlet is configured to enter the compression chamber partly from the upper inlet hole through the upper chamber, and partly enter the lower chamber from the lower ventilation hole and enter the compression chamber from the air gap through the upper chamber, to absorb heat of the motor.   
     
     
         2 . The scroll compressor according to  claim 1 , wherein the lower ventilation hole comprises a lower inlet hole and a lower outlet hole, and the refrigerant gas entering from the gas inlet is configured to enter at least partially into the lower inlet hole; the lower outlet hole is connected to the upper inlet hole through a gap between the inner shell and outer shell. 
     
     
         3 . The scroll compressor according to  claim 2 , wherein the motor further comprises an upper wire wrap and a lower wire wrap, the upper wire wrap is arranged in the upper chamber and the lower wire wrap is arranged in the lower chamber, refrigerant gas in the upper chamber is configured to cool the upper wire wrap, the refrigerant gas in the upper chamber comprises refrigerant gas entering the upper chamber from the gas inlet through the lower chamber and an air gap, refrigerant gas entering the upper chamber from the gas inlet through the upper inlet hole, and refrigerant gas entering the upper chamber from the gas inlet through the lower chamber, the lower ventilation hole and the upper inlet hole, and
 the refrigerant gas in the lower chamber is configured to cool the lower wire wrap.   
     
     
         4 . The scroll compressor according to  claim 2 , further comprising an air guiding portion, wherein the air guiding portion is arranged on the inner shell or the outer shell and an end of the air guiding portion is in connection with the lower inlet hole, and an opening of the other end of the air guiding portion faces an export of the gas inlet. 
     
     
         5 . The scroll compressor according to  claim 4 , wherein the air guiding portion is arranged on the inner shell, an entry of the air guiding portion directly faces the opening of the outer shell, and a spacing between an outer contour of the air guiding portion and an inner surface of the outer shell ranges from 2 mm to 15 mm. 
     
     
         6 - 7 . (canceled) 
     
     
         8 . The scroll compressor according to  claim 2 , wherein a sum of areas of upper inlet holes is set to be less than a sum of areas of lower outlet holes. 
     
     
         9 . The scroll compressor according to  claim 8 , wherein the number of the upper inlet holes is greater than the number of the lower outlet holes and an area of each of the upper inlet holes is smaller than an area of each of the lower outlet holes. 
     
     
         10 . The scroll compressor according to  claim 2 , wherein the upper inlet hole and the lower ventilation hole are configured to be uniformly distributed around the circumferential direction of the inner shell. 
     
     
         11 . A scroll compressor, comprising:
 an outer shell, provided with a gas inlet;   an inner shell, arranged in the outer shell;   a motor, arranged in the inner shell and comprising a stator and a rotor arranged in the stator; and   a scroll assembly, provided with a compression chamber for compressing a refrigerant gas and configured to compress the refrigerant gas under control of the motor, wherein   an air gap is provided between the stator and the rotor and/or between the stator and the inner shell, an upper chamber is formed in the inner shell between the motor and the scroll assembly, and the upper chamber is provided with an upper inlet hole; a lower chamber is formed in the inner shell on a side of the motor away from the scroll assembly, the lower chamber is provided with a lower ventilation hole;   the lower ventilation hole comprises a lower inlet hole and a lower outlet hole, wherein the lower outlet hole is connected to the upper inlet hole through a gap between the inner shell and the outer shell; and   refrigerant gas entering from the gas inlet has a lower temperature than the motor, and the refrigerant gas entering from the gas inlet is configured to entirely enter the lower chamber through the lower inlet hole; the refrigerant gas in the lower chamber partially enters the compression chamber from the air gap through the upper chamber, and partially flows out from the lower outlet hole and enters the compression chamber from the gap between the inner shell and the outer shell through the upper chamber, to absorb heat of the motor.   
     
     
         12 . The scroll compressor according to  claim 11 , further comprising an air guiding portion, wherein the air guiding portion is configured to connect with the gas inlet and the lower inlet hole at two ends, respectively.