Scroll for scroll compressor and scroll compressor

Abstract

A scroll for a scroll compressor and a scroll compressor is disclosed. The scroll includes an end plate having first and second surfaces opposite to each other; a scroll wrap extending from the first surface of the end plate; and at least one oil hole including a first oil hole portion extending in the end plate, and a second oil hole portion extending in the end plate and the scroll wrap and extending from the first oil hole portion to a strip-shaped surface of the scroll wrap away from the end plate, the second oil hole portion having an opening in the strip-shaped surface of the scroll wrap. The oil hole reduces circulation rate of the lubricating oil and temperature of the discharged refrigerant.

1 . A scroll for a scroll compressor, comprising:
 an end plate having a first surface and a second surface opposite to each other;   a scroll wrap extending from the first surface of the end plate; and   at least one oil hole, comprising: a first oil hole portion extending in the end plate, and a second oil hole portion extending from the first oil hole portion to a strip-shaped surface of the scroll wrap away from the end plate through the end plate and the scroll wrap; the second oil hole portion having an opening in the strip-shaped surface of the scroll wrap.   
     
     
         2 . The scroll for the scroll compressor according to  claim 1 , further comprising:
 an annular recess formed in the second surface of the end plate, the first oil hole portion extending from the annular recess in a direction away from a rotation axis of the scroll and being in communication with the annular recess.   
     
     
         3 . The scroll for the scroll compressor according to  claim 2 , further comprising:
 a hub portion extending from the second surface of the end plate, wherein the hub portion has an inner hole, the annular recess surrounds the hub portion, and the at least one oil hole further comprises: a third oil hole portion extending from the inner hole of the hub portion to the annular recess in a direction away from the rotation axis of the scroll, so as to communicate the inner hole of the hub portion with the annular recess.   
     
     
         4 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the first oil hole portion extends along a plane perpendicular to a rotation axis of the scroll, and the second oil hole portion extends in a direction parallel to the rotation axis of the scroll.   
     
     
         5 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the first oil hole portion extends along a plane inclined relative to a rotational axis of the scroll, and the second oil hole portion extends in a direction parallel to the rotational axis of the scroll.   
     
     
         6 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the first oil hole portion extends in a radial direction of the scroll.   
     
     
         7 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the opening of the second oil hole portion is located in an outer end of the strip-shaped surface of the scroll wrap.   
     
     
         8 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the opening of the second oil hole portion is spaced from an outer end of the strip-shaped surface of the scroll wrap by an angle of 175 to 185 degrees.   
     
     
         9 . The scroll for the scroll compressor according to  claim 1 , wherein:
 the at least one oil hole comprises multiple oil holes, the opening of the second oil hole portion of a first oil hole among the multiple oil holes is located in an outer end of the strip-shaped surface of the scroll wrap, while the opening of the second oil hole portion of a second oil hole among the multiple oil holes is spaced from the opening of the second oil hole portion of the first oil hole by an angle of 175 to 185 degrees.   
     
     
         10 . The scroll for the scroll compressor according to  claim 1 , further comprising:
 a strip-shaped groove located in the strip-shaped surface of the scroll wrap, wherein the opening of the second oil hole portion is located on an outer side of the strip-shaped groove.   
     
     
         11 . The scroll for the scroll compressor according to  claim 7 , further comprising:
 a strip-shaped groove located in the strip-shaped surface of the scroll wrap, wherein the opening of the second oil hole portion is located on an outer side of an outer end of the strip-shaped groove in a circumferential direction of the scroll wrap.   
     
     
         12 . The scroll for the scroll compressor according to  claim 8 , further comprising:
 a strip-shaped groove located in the strip-shaped surface of the scroll wrap, wherein the opening of the second oil hole portion is located on an outer side of the strip-shaped groove in a radial direction of the scroll wrap.   
     
     
         13 . The scroll for the scroll compressor according to  claim 9 , further comprising:
 a strip-shaped groove located in the strip-shaped surface of the scroll wrap, wherein the opening of the second oil hole portion of the first oil hole among the multiple oil holes is located on an outer side of an outer end of the strip-shaped groove in a circumferential direction of the scroll wrap, and the opening of the second oil hole portion of the second oil hole among the multiple oil holes is located on an outer side of the strip-shaped groove in a radial direction of the scroll wrap.   
     
     
         14 . A scroll compressor, comprising:
 the scroll according to  claim 1 .   
     
     
         15 . A scroll compressor, comprising:
 a first scroll comprising a first end plate and a first scroll extending downwardly from the first end plate;   a second scroll comprising a second end plate and a second scroll wrap extending upwardly from the second end plate, the second scroll and the first scroll being engaged with each other to form a compression chamber for compressing a refrigerant, the second scroll being the scroll according to  claim 1 ;   a motor;   a driving member located below the second scroll, the motor driving a rotation of the first scroll by the driving member, and the first scroll driving a rotation of the second scroll; and   a bracket, on which the driving member being rotatably supported.   
     
     
         16 . The scroll compressor according to  claim 15 , wherein:
 the driving member comprises: a hub portion having an inner hole; and a flange portion extending radially and outwardly from an end of the hub portion of the driving member, the second end plate of the second scroll being rotatably supported on the flange portion of the driving member.   
     
     
         17 . The scroll compressor of  claim 16 , further comprising:
 a scroll cover comprising: an end plate having a central hole; and a cylindrical portion extending downwardly from an outer periphery of the end plate, the cylindrical portion of the scroll cover being connected with the flange portion of the driving member, and the end plate of the scroll cover being connected with the first end plate of the first scroll.   
     
     
         18 . The scroll compressor of  claim 16 , wherein:
 the first scroll comprises a scroll cover casted integrally therewith, the scroll cover comprising: an end plate having a central hole; and a cylindrical portion extending downwardly from an outer periphery of the end plate, the cylindrical portion of the scroll cover being connected with the flange portion of the driving member, and the end plate of the scroll cover being connected with the first end plate of the first scroll.   
     
     
         19 . The scroll compressor of  claim 16 , further comprising:
 a fixed shaft, a lower end of which being fixed to the bracket, the hub portion of the driving member being rotatably mounted on the fixed shaft.   
     
     
         20 . The scroll compressor of  claim 16 , wherein the second scroll further comprises:
 an annular recess formed in the second surface of the end plate, the first oil hole portion extending from the annular recess in a direction away from a rotation axis of the scroll and being in communication with the annular recess.