Driving member for scroll compressor and scroll compressor

Abstract

A driving member for a scroll compressor and a scroll compressor including the driving member. The driving member includes a hub portion having an inner hole, the hub portion including a first end and a second end opposite to each other; a flange portion extending outward from the first end of the hub portion in a radial direction, the flange portion having a surface facing in a direction from the first end to the second end, the surface of the flange portion having an annular thrust surface and an oil groove. Due to the oil groove provided on the annular thrust surface of the driving member according to the disclosure, more lubricating oil can be stored on the thrust surface, thereby improving the lubrication performance of the scroll compressor at high speeds.

1 . A driving member for a scroll compressor, comprising:
 a hub portion having an inner hole, the hub portion comprising a first end and a second end opposite to each other; and   a flange portion extending outward from the first end of the hub portion in a radial direction of the hub portion, the flange portion having a surface facing in a direction from the first end to the second end, the surface of the flange portion having an annular thrust surface and an oil groove.   
     
     
         2 . The driving member of  claim 1 , wherein
 the oil groove comprises a first oil groove on the annular thrust surface of the surface of the flange portion, the first oil groove extends laterally in a direction from a radial inner side of the annular thrust surface towards a radial outer side of the annular thrust surface and extends laterally through a portion of the annular thrust surface, the first oil groove is spaced apart from a radial outer edge of the annular thrust surface in the radial direction of the hub portion.   
     
     
         3 . The driving member of  claim 2 , wherein
 the first oil groove extends in a radial direction.   
     
     
         4 . The driving member of  claim 2 , wherein
 the first oil groove extends from a radial inner edge of the annular thrust surface.   
     
     
         5 . The driving member of  claim 2 , wherein
 the annular thrust surface extends from an edge of the inner hole of the hub portion in the radial direction of the hub portion.   
     
     
         6 . The driving member of  claim 5 , wherein
 the first oil groove extends from the edge of the inner hole of the hub portion towards the radial outer side of the annular thrust surface and communicates with the inner hole.   
     
     
         7 . The driving member of  claim 1 , wherein
 the oil groove further comprises a second oil groove arranged on the surface of the flange portion, on a radial outer side of the annular thrust surface of the surface of the flange portion, and the second oil groove extends around the annular thrust surface.   
     
     
         8 . The driving member of  claim 2 , wherein
 the oil groove further comprises a second oil groove arranged on the surface of the flange portion, on the radial outer side of the annular thrust surface of the surface of the flange portion, and the second oil groove extends around the annular thrust surface.   
     
     
         9 . The driving member of  claim 8 , wherein
 a depth of the second oil groove is greater than a depth of the first oil groove.   
     
     
         10 . The driving member of  claim 7 , wherein
 the second oil groove is a closed annular oil groove.   
     
     
         11 . The driving member of  claim 10 , further comprising:
 a retaining ring arranged in the second oil groove.   
     
     
         12 . The driving member of  claim 11 , wherein
 the retaining ring has a rectangular cross section.   
     
     
         13 . The driving member of  claim 11 , wherein
 the retaining ring has a C-shaped cross section and an opening facing a rotational axis of the driving member.   
     
     
         14 . The driving member of  claim 7 , further comprising:
 an eccentric ring hole in the surface of the flange portion, wherein portions of the second oil groove corresponding to the eccentric ring hole is located on inner sides of the eccentric ring hole in the radial direction of the hub portion.   
     
     
         15 . The driving member of  claim 7 , further comprising:
 eccentric ring holes in the surface of the flange portion, wherein the second oil groove comprising a plurality of second oil groove segments, each of the plurality of second oil groove segments is located between adjacent eccentric ring holes, and an end of each of the plurality of second oil groove segments communicates with an eccentric ring hole.   
     
     
         16 . The driving member of  claim 15 , wherein
 the second oil groove extends along a circle, and a center of the circle is on a rotation axis of the driving member.   
     
     
         17 . The driving member of  claim 2 , further comprising:
 an oil discharge hole extending through the flange portion and located on the radial outer side of the annular thrust surface of the surface of the flange portion.   
     
     
         18 . The driving member of  claim 1 , further comprising:
 an annular wedge-shaped protrusion protruding from the annular thrust surface of the surface of the flange portion, wherein a cross section of the wedge-shaped protrusion in a radial direction has a wedge-shaped shape, and the wedge-shaped protrusion has a wedge-shaped protrusion surface facing axially outward, on the cross section in the radial direction, a first wedge-shaped protrusion point of the wedge-shaped protrusion surface in the radial direction has a largest axial distance from the surface of the flange portion, and a second wedge-shaped protrusion point in the radial direction has zero axial distance from the surface of the flange portion.   
     
     
         19 . The driving member of  claim 18 , wherein
 the first wedge-shaped protrusion point is located on a radial outer side of the second wedge-shaped protrusion point.   
     
     
         20 . The driving member of  claim 19 , wherein
 the second wedge-shaped protrusion point is located at an edge of the inner hole of the hub portion.   
     
     
         21 . The driving member of  claim 18 , wherein
 at the first wedge-shaped protrusion point, an axial distance between the wedge-shaped protrusion surface and the surface of the flange portion is in a range of 0.1 micrometer to 1 millimeter.   
     
     
         22 . (canceled) 
     
     
         23 . A scroll compressor comprising:
 a first scroll comprising a first end plate and a first scroll wrap protruding downward from the first end plate;   a second scroll comprising a second end plate and a second scroll wrap protruding upward from the second end plate, the second scroll and the first scroll cooperating with to form a compression cavity for compressing refrigerant;   a motor;   the driving member of  claim 1 , wherein the driving member is located below the second scroll, the motor drives the first scroll to rotate through the driving member, and the first scroll drives the second scroll to rotate, the second end plate of the second scroll is rotatably supported on the flange portion of the driving member; and   a support, wherein the driving member is rotatably supported on the support.   
     
     
         24 . The scroll compressor of  claim 23 , further comprising:
 a scroll cover comprising an end plate with a central hole; and a cylindrical portion extending downward from an outer periphery of the end plate, wherein the cylindrical portion of the scroll cover is connected to the flange portion of the driving member, and the end plate of the scroll cover is connected to the first end plate of the first scroll.   
     
     
         25 . The scroll compressor of  claim 23 , further comprising:
 a fixed shaft, wherein a lower end of the fixed shaft is fixed to the support, and the hub portion of the driving member is rotatably mounted to the fixed shaft.   
     
     
         26 . The scroll compressor of  claim 23 , wherein the inner hole of the driving member has a stepped portion or a concave-convex connection portion.