Scroll compressor

Abstract

Provided are a scroll compressor and an air conditioner including the same. The scroll compressor includes a motor, a driving shaft, a main frame, a fixed scroll, an orbiting scroll, a suction, a first inflow part disposed on one side of the fixed scroll to inject the refrigerant into the compression chamber, and a second inflow part disposed on the other side of the fixed scroll to inject a refrigerant, which has a pressure different from that of the refrigerant introduced into the first inflow part, into the compression chamber. The first inflow part is disposed at a position at which a first extension line (l1) connecting a central portion of the fixed scroll to a central portion of the suction part rotates by a first preset angle in a direction opposite to the rotation direction of the compression chamber.

What is claimed is: 
     
         1 . A scroll compressor comprising:
 a motor generating a driving force;   a driving shaft passing through the motor to rotate;   a main frame supporting an upper portion of the driving shaft;   a fixed scroll comprising at least one coupling part coupled to the main frame and a first wrap;   an orbiting scroll disposed to have a phase different with respect to the fixed scroll, the orbiting scroll comprising a second wrap defining a compression chamber that is rotatable between the first wrap and the second wrap;   a suction part suctioning a refrigerant into the compression chamber;   a first inflow part disposed on one side of the fixed scroll to inject the refrigerant into the compression chamber; and   a second inflow part disposed on the other side of the fixed scroll to inject a refrigerant, which has a pressure different from that of the refrigerant introduced into the first inflow part, into the compression chamber,   wherein the first inflow part is disposed at a position at which a first extension line (l1) connecting a central portion of the fixed scroll to a central portion of the suction part rotates by a first preset angle in a direction opposite to the rotation direction of the compression chamber.   
     
     
         2 . The scroll compressor according to  claim 1 , wherein the first preset angle ranges from about 80° to about 110°. 
     
     
         3 . The scroll compressor according to  claim 1 , wherein the second inflow part is disposed at a position at which the first extension line (l1) connecting the central portion of the fixed scroll to the central portion of the suction part rotates by a second preset angle in the rotation direction of the compression chamber. 
     
     
         4 . The scroll compressor according to  claim 3 , wherein the second preset angle ranges from about 70° to about 100°. 
     
     
         5 . The scroll compressor according to  claim 1 , wherein the second inflow part has a phase difference of about 180° with respect to the first inflow part. 
     
     
         6 . The scroll compressor according to  claim 2 , wherein the first preset angle ranges from about 45° to about 65°. 
     
     
         7 . The scroll compressor according to  claim 6 , wherein the second preset angle ranges from about 115° to about 135°. 
     
     
         8 . The scroll compressor according to  claim 1 , wherein the central portion of the fixed scroll defines a center of gravity of the fixed scroll. 
     
     
         9 . The scroll compressor according to  claim 1 , wherein the central portion of the fixed scroll is defined at a point at which a first virtual line connecting two facing coupling parts of a plurality of coupling parts to each other and a second virtual line connecting the other two facing coupling parts to each other meet each other. 
     
     
         10 . The scroll compressor according to  claim 9 , wherein the plurality of coupling parts comprises a first coupling part, a second coupling part, a third coupling part facing the first coupling part, and a fourth coupling part facing the second coupling part,
 the first coupling part and the second coupling part are disposed on one side with respect to a second extension line (l2) perpendicular to the first extension line (l1), and   the third coupling part and the fourth coupling part are disposed on the other side with respect to the second extension line (l2).   
     
     
         11 . The scroll compressor according to  claim 1 , wherein an opening of the first inflow part starts before a time point at which the suction of the refrigerant through the suction part is completed. 
     
     
         12 . The scroll compressor according to  claim 11 , wherein, when the driving shaft has a rotation angle of about 0° at the time point at which the suction of the refrigerant through the suction part is completed, the opening of the first inflow part starts when the driving shaft has a rotation angle of about −60° to about −30°. 
     
     
         13 . The scroll compressor according to  claim 11 , wherein, when the driving shaft has a rotation angle of about 0° at the time point at which the suction of the refrigerant through the suction part is completed, the opening of the first inflow part starts when the driving shaft has a rotation angle of about −10° to about 10°. 
     
     
         14 . The scroll compressor according to  claim 1 , wherein the fixed scroll has a discharge hole through which the compressed refrigerant is discharged, and
 the central portion of the fixed scroll corresponds to a central portion of the discharge hole.   
     
     
         15 . A scroll compressor comprising:
 a fixed scroll comprising a first wrap;   an orbiting scroll disposed to have a phase different with respect to the fixed scroll, the orbiting scroll comprising a second wrap defining a compression chamber that is rotatable between the first wrap and the second wrap;   a suction part suctioning a refrigerant into the compression chamber;   a first inflow part disposed on one side of the fixed scroll to inject the refrigerant into the compression chamber; and   a second inflow part disposed on the other side of the fixed scroll to inject a refrigerant, which has a pressure different from that of the refrigerant introduced into the first inflow part, into the compression chamber,   wherein the first inflow part is disposed at a position at which a first extension line (l1) connecting two points defined on the fixed scroll to each other rotates by an angle of about 80° to about 110° in a direction opposite to the rotation direction of the compression chamber.   
     
     
         16 . The scroll compressor according to  claim 15 , wherein the two points comprises one point representing a central portion of the fixed scroll and the other point representing a central portion of the suction part. 
     
     
         17 . The scroll compressor according to  claim 16 , wherein the central portion of the fixed scroll is defined at a point at which a first virtual line connecting two facing coupling parts of the plurality of coupling parts to each other and a second virtual line connecting the other two facing coupling parts to each other meet each other. 
     
     
         18 . The scroll compressor according to  claim 16 , wherein the fixed scroll has a discharge hole through which the compressed refrigerant is discharged, and
 the central portion of the fixed scroll corresponds to a central portion of the discharge hole.   
     
     
         19 . The scroll compressor according to  claim 16 , further comprising:
 a motor generating a driving force;   a driving shaft passing through the motor to rotate; and   a main frame supporting an upper portion of the driving shaft,   wherein the fixed scroll comprises a plurality of coupling parts coupled to the main frame.