Abstract
A scroll compressor includes a first scroll including a first end plate and a first scroll wrap extending downward from the first end plate; a second scroll including a second end plate and a second scroll wrap extending upward from the second end plate, the second scroll and the first scroll cooperating to form a compression chamber for compressing a refrigerant; a motor; a driving member located below the second scroll, the motor driving the first scroll to rotate through the driving member, and the first scroll driving the second scroll to rotate; and a bracket, the driving member being rotatably supported on the bracket. This structure can improve the performance of the scroll compressor.
Claims
1. A scroll compressor, comprising: a first scroll comprising a first end plate and a first scroll wrap extending downward from the first end plate; a second scroll comprising a second end plate and a second scroll wrap extending upward from the second end plate, the second scroll and the first scroll cooperating to form a compression chamber for compressing a medium; a motor; a driving member located below the second scroll, the motor driving the first scroll to rotate through the driving member, and the first scroll driving the second scroll to rotate; and a bracket, the driving member being rotatably supported on the bracket.
2. The scroll compressor of claim 1, wherein: the first end plate comprises: a port that penetrates a central part of the first end plate; and a groove that surrounds the port, the scroll compressor further comprises: a sealing ring provided in the groove and extending out from the groove; and an exhaust member, wherein a lower end of the exhaust member is located above the port of the first end plate of the first scroll, the exhaust member has an internal channel for discharging a compressed refrigerant from the port of the first end plate of the first scroll, and the sealing ring is located between the lower end of the exhaust member and the first end plate to form a seal between the lower end of the exhaust member and the first end plate.
3. The scroll compressor of claim 2, wherein: the sealing ring has a C-shaped cross section, and an opening of the sealing ring faces a rotational axis of the first scroll.
4. The scroll compressor of claim 2, wherein: the sealing ring has a recessed portion on an outer periphery; and the scroll compressor further comprises: an anti-rotation pin fixed to the first end plate of the first scroll and having a stopper part protruding into the groove, the stopper part cooperating with the recessed portion of the sealing ring.
5. The scroll compressor of claim 2, wherein: the driving member comprises: a hub portion having an inner hole, the hub portion comprising a first end portion and a second end portion opposite to each other; and a flange portion extending radially outward from the first end portion 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.
6. The scroll compressor of claim 5, further comprising: a scroll cover, the scroll cover comprising: an end plate having a center 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, and the exhaust member passes through the center hole of the end plate of the scroll cover.
7. The scroll compressor of claim 6, further comprising: a housing; a partition wall provided in the housing, wherein the partition wall divides a space in the housing into a first space located below the partition wall and a second space located above the partition wall, the partition wall has an opening in a central part, and an upper end of the exhaust member is connected to an edge of the opening of the partition wall, which is used to discharge the compressed refrigerant from the port of the first end plate of the first scroll to the second space located above the partition wall; and a heat shield provided between the partition wall and the first end plate of the first scroll.
8. The scroll compressor of claim 7, wherein: the heat shield comprises one of two features: an annular disc-shaped part and a center hole, and the exhaust member passes through the center hole of the heat shield; and, an annular disc-shaped part and a cylindrical part extending downward from an inner periphery of the annular disc-shaped part, and a lower portion of the exhaust member is provided in the cylindrical part of the heat shield.
9. (canceled)
10. (canceled)
11. The scroll compressor of claim 7, wherein: at least a part of the heat shield is provided between the partition wall and the scroll cover the heat shield comprises an annular disc-shaped part and has a center hole, the exhaust member passes through the center hole of the heat shield, the disc-shaped part of the heat shield is spaced apart from the end plate of the scroll cover, and an air suction channel is formed between an outer peripheral surface of the exhaust member and a hole wall of the center hole of the end plate of the scroll cover, and the refrigerant to be compressed enters the compression chamber of the first scroll and the second scroll through a gap between the disc-shaped part of the heat shield and the end plate of the scroll cover, the air suction channel, a gap formed between the end plate of the scroll cover and the first end plate of the first scroll, and gaps between an inner wall of the cylindrical portion of the scroll cover and the first scroll and the second scroll.
12. The scroll compressor of claim 7, wherein: at least a part of the heat shield is provided between the partition wall and the scroll cover; the heat shield comprises an annular disc-shaped part and a cylindrical part extending downward from an inner periphery of the annular disc-shaped part, a lower portion of the exhaust member is provided in the cylindrical part of the heat shield, the disc-shaped part of the heat shield is spaced apart from the end plate of the scroll cover, and an air suction channel is formed between an outer peripheral surface of the cylindrical part of the heat shield and a hole wall of the center hole of the end plate of the scroll cover, and the refrigerant to be compressed enters the compression chamber of the first scroll and the second scroll through a gap between the disc-shaped part of the heat shield and the end plate of the scroll cover, the air suction channel, a gap formed between the end plate of the scroll cover and the first end plate of the first scroll, and gaps between an inner wall of the cylindrical portion of the scroll cover and the first scroll and the second scroll.
13. The scroll compressor of claim 5, further comprising: a fixed shaft, a lower end of the fixed shaft being fixed to the bracket, and the hub portion of the driving member being rotatably mounted on the fixed shaft; and the scroll compressor further comprises: a thrust bearing provided between the second end portion of the hub portion of the driving member and the cylindrical portion of the bracket.
14. The scroll compressor of claim 13, wherein: the bracket comprises: a cylindrical portion, the second end portion of the hub portion of the driving member being rotatably supported on the cylindrical portion of the bracket; and the scroll compressor further comprises: a thrust bearing provided between the second end portion of the hub portion of the driving member and the cylindrical portion of the bracket.
15. (canceled)
16. (canceled)
17. (canceled)
18. (canceled)
19. The scroll compressor of claim 1, wherein: the driving member comprises: a hub portion having an inner hole, the hub portion comprising a first end portion and a second end portion opposite to each other; and a flange portion extending radially outward from the first end portion 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, and the flange portion has an upper surface, and the second end plate of the second scroll has a lower surface, and one of the upper surface of the flange portion and the lower surface of the second end plate of the second scroll has an annular thrust surface and an oil groove.
20. (canceled)
21. (canceled)
22. (canceled)
23. (canceled)
24. (canceled)
25. The scroll compressor of claim 19, wherein: the oil groove further comprises: a second oil groove provided, on the radially outer side of the annular thrust surface, on one of the upper surface of the flange portion and the lower surface of the second end plate of the second scroll, the second oil groove extending around the annular thrust surface.
26. (canceled)
27. (canceled)
28. (canceled)
29. (canceled)
30. (canceled)
31. The scroll compressor of claim 25, wherein: the upper surface of the flange portion has the annular thrust surface, and the second oil groove is provided on the upper surface of the flange portion; and the driving member further comprises one of two features: an eccentric ring hole in the upper surface of the flange portion, a part of the second oil groove corresponding to the eccentric ring hole being located on an inner side of the eccentric ring hole in a radial direction of the hub portion; and, eccentric ring holes in the upper surface of the flange portion, the second oil groove comprises a plurality of second oil groove sections, each of the plurality of second oil groove sections is located between adjacent eccentric ring holes, and an end portion of each of the plurality of second oil groove sections is communicated with the eccentric ring holes.
32. (canceled)
33. (canceled)
34. (canceled)
35. (canceled)
36. (canceled)
37. The scroll compressor according to claim 19, further comprising: an annular wedge-shaped protrusion protruding from the annular thrust surface, wherein a cross section of the wedge-shaped protrusion in a radial direction has a wedge shape, the wedge-shaped protrusion has a wedge-shaped protrusion surface that is axially outward, and in the cross section in the radial direction, an axial distance between a first wedge-shaped protrusion point of the wedge-shaped protrusion surface in the radial direction and the annular thrust surface is the largest, and an axial distance between a second wedge-shaped protrusion point of the wedge-shaped protrusion surface in the radial direction and the annular thrust surface is zero.
38. (canceled)
39. (canceled)
40. (canceled)
41. The scroll compressor of claim 1, wherein: the driving member comprises: a hub portion having an inner hole, the hub portion comprising a first end portion and a second end portion opposite to each other; and a flange portion extending radially outward from the first end portion 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; and the scroll compressor further comprises a motor cover, the motor cover comprises a cylindrical portion and an annular partition wall provided in the cylindrical portion, an upper cylindrical part of the cylindrical portion located above the annular partition wall surrounds the flange portion of the driving member, and a lower cylindrical part of the cylindrical portion located below the annular partition wall surrounds the motor.
42. The scroll compressor of claim 41, further comprising: a scroll cover, the scroll cover comprising: an end plate having a center 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; wherein the upper cylindrical part of the cylindrical portion of the motor cover also surrounds a part of the cylindrical portion of the scroll cover.
43. The scroll compressor of claim 41, wherein: a stator of the motor is fixed to the partition wall of the motor cover.
44. The scroll compressor of claim 41, wherein: the motor cover further comprises: an annular protrusion protruding upward from an inner edge of the annular partition wall.
45. The scroll compressor of claim 41, further comprising: a housing; and a compressor suction port provided in the housing; wherein the bracket comprises: a cylindrical portion; a flange portion extending outward from the cylindrical portion; and a cylindrical wall surrounding the flange portion, a lower end of the cylindrical portion of the motor cover is fixedly connected to an upper end of the cylindrical wall of the bracket to form a motor shell, a rotor and a stator of the motor are located in the motor shell, the lower end of the cylindrical portion of the motor cover has two opposite notches respectively forming an inlet and an outlet of the motor shell, the motor cover further comprises an inverted U-shaped baffle extending from an outer surface of the cylindrical portion of the motor cover, and when viewed from a radial direction of the cylindrical portion of the motor cover, the notch forming the inlet of the motor shell is located on an inner side of the baffle, so that the refrigerant from a compressor suction port directly enters the inlet of the motor shell and flows out from the outlet of the motor shell.
46. The scroll compressor of claim 45, wherein: an upper end of the cylindrical wall of the bracket has two opposite notches, and the two notches at the upper end of the cylindrical wall of the bracket and the two notches at the lower end of the cylindrical portion of the motor cover form the inlet and the outlet of the motor shell, respectively.
47. The scroll compressor of claim 46, wherein: a position of the inlet corresponds to a position of the compressor suction port, and the outlet is located in a region spaced 160 degrees to 180 degrees from the inlet.
48. The scroll compressor of claim 46, wherein: the cylindrical portion of the motor cover has a through channel extending from an upper surface of the partition wall to the lower end of the cylindrical portion of the motor cover, and the channel constitutes an oil return channel.
49. The scroll compressor of claim 48, wherein: the cylindrical wall of the bracket has a through channel extending from an upper end of the cylindrical wall to a lower end of the cylindrical wall, and the channel of the cylindrical portion of the motor cover is communicated with the channel of the cylindrical wall of the bracket to jointly constitute the oil return channel.
50. The scroll compressor of claim 1, wherein: an air suction channel is provided on a side of the first scroll away from the second scroll, and used for sucking the medium into the compression chamber.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0042] FIG. 1 is a schematic cross-sectional view of a scroll compressor according to an embodiment of the present invention;
[0043] FIG. 2 is a schematic cross-sectional view of partial components of a scroll compressor according to an embodiment of the present invention;
[0044] FIG. 3 is a schematic cross-sectional exploded perspective view of some of the partial components of the scroll compressor shown in FIG. 2;
[0045] FIG. 4 is a schematic cross-sectional exploded perspective view of some of the partial components of the scroll compressor shown in FIG. 2;
[0046] FIG. 5 is a schematic cross-sectional exploded perspective view of some of the partial components of the scroll compressor shown in FIG. 2, wherein a perspective view of a shaft sleeve is also shown;
[0047] FIG. 6 is a schematic cross-sectional view of a fixed shaft of the scroll compressor shown in FIG. 2;
[0048] FIG. 7 is a schematic cross-sectional view of partial components of a scroll compressor according to an embodiment of the present invention;
[0049] FIG. 8 is a schematic perspective view of the fixed shaft of the scroll compressor shown in FIG. 2;
[0050] FIG. 9 is a schematic cross-sectional view of the fixed shaft of the scroll compressor shown in FIG. 2;
[0051] FIG. 10 is a schematic cross-sectional view of partial components of a scroll compressor according to an embodiment of the present invention;
[0052] FIG. 11 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0053] FIG. 12 is a schematic top view of the driving member of the scroll compressor shown in FIG. 11;
[0054] FIG. 13 is a schematic cross-sectional view of the driving member of the scroll compressor along line AA in FIG. 12;
[0055] FIG. 14 is a partially enlarged schematic cross-sectional view of the driving member of the scroll compressor shown in FIG. 13;
[0056] FIG. 15 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0057] FIG. 16 is a schematic top view of the driving member of the scroll compressor shown in FIG. 15;
[0058] FIG. 17 is a schematic cross-sectional view of the driving member of the scroll compressor along line BB in FIG. 16;
[0059] FIG. 18 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0060] FIG. 19 is a schematic top view of the driving member of the scroll compressor shown in FIG. 18;
[0061] FIG. 20 is a schematic cross-sectional view of the driving member of the scroll compressor along line CC in FIG. 19;
[0062] FIG. 21 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0063] FIG. 22 is a schematic top view of the driving member of the scroll compressor shown in FIG. 21;
[0064] FIG. 23 is a schematic cross-sectional view of the driving member of the scroll compressor along line DD in FIG. 22;
[0065] FIG. 24 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0066] FIG. 25 is a schematic top view of the driving member of the scroll compressor shown in FIG. 24;
[0067] FIG. 26 is a schematic cross-sectional view of the driving member of the scroll compressor shown in FIG. 24;
[0068] FIG. 27 is a schematic perspective view of a retaining ring of the driving member of the scroll compressor shown in FIG. 24;
[0069] FIG. 28 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0070] FIG. 29 is a schematic top view of the driving member of the scroll compressor shown in FIG. 28;
[0071] FIG. 30 is a schematic cross-sectional view of the driving member of the scroll compressor shown in FIG. 28;
[0072] FIG. 31 is a schematic cross-sectional view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0073] FIG. 32 is a schematic perspective view of a retaining ring of the driving member of the scroll compressor shown in FIG. 31;
[0074] FIG. 33 is a partially enlarged schematic cross-sectional view of the driving member of the scroll compressor shown in FIG. 31;
[0075] FIG. 34 is a schematic perspective view of a heat shield of a scroll compressor according to an embodiment of the present invention;
[0076] FIG. 35 is another schematic perspective view of a heat shield of a scroll compressor according to an embodiment of the present invention;
[0077] FIG. 36 is a schematic cross-sectional view of the heat shield of the scroll compressor shown in FIGS. 34 and 35;
[0078] FIG. 37 is a schematic perspective view of a heat shield of a scroll compressor according to another embodiment of the present invention;
[0079] FIG. 38 is another schematic perspective view of a heat shield of a scroll compressor according to another embodiment of the present invention;
[0080] FIG. 39 is a schematic cross-sectional view of the heat shield of the scroll compressor shown in FIGS. 37 and 38;
[0081] FIG. 40 is a schematic perspective view of a bracket and a motor cover that are assembled together;
[0082] FIG. 41 is a schematic cross-sectional view of the bracket and the motor cover that are assembled together;
[0083] FIG. 42 is a schematic perspective view of the motor cover;
[0084] FIG. 43 is another schematic perspective view of the motor cover;
[0085] FIG. 44 is a schematic perspective view of the bracket;
[0086] FIG. 45 is a schematic cross-sectional view of the bracket;
[0087] FIG. 46 is a schematic cross-sectional view of partial components of a scroll compressor according to an embodiment of the present invention;
[0088] FIG. 47 is a schematic exploded perspective view of some components of the scroll compressor shown in FIG. 1;
[0089] FIG. 48 is a schematic top view of a driving member of a scroll compressor according to a modified example of the embodiment shown in FIG. 11;
[0090] FIG. 49 is a schematic top view of a driving member of a scroll compressor according to a modified example of the embodiment shown in FIG. 16;
[0091] FIG. 50 is a schematic top view of a driving member of a scroll compressor according to a modified example of the embodiment shown in FIG. 19;
[0092] FIG. 51 is a schematic top view of a driving member of a scroll compressor according to a modified example of the embodiment shown in FIG. 22;
[0093] FIG. 52 is a schematic perspective view of a driving member of a scroll compressor according to an embodiment of the present invention;
[0094] FIG. 53 is a schematic top view of the driving member of the scroll compressor shown in FIG. 52;
[0095] FIG. 54 is a schematic cross-sectional view of a scroll compressor according to a modified example of the embodiment of the present invention; and
[0096] FIG. 55 is a schematic cross-sectional view of partial components of a scroll compressor according to a modified example of the embodiment of the present invention.
DETAILED DESCRIPTION
[0097] Embodiments of the present invention are described below with reference to the drawings.
[0098] Referring to FIGS. 1 to 7, 10, 47, 54 and 55, a scroll compressor 100 according to an embodiment of the present invention includes a first scroll 11, a second scroll 12, a motor 7, a driving member 3 and a bracket 4. The first scroll 11 includes a first end plate 112 and a first scroll wrap 113 extending downward from the first end plate 112. The second scroll 12 includes a second end plate 123 and a second scroll wrap 124 extending upward from the second end plate 123, and the second scroll 12 and the first scroll 11 cooperate to form a compression chamber for compressing a refrigerant. The driving member 3 is located below the second scroll 12, the motor 7 drives the first scroll 11 to rotate through the driving member 3, and the first scroll 11 drives the second scroll 12 to rotate. The driving member 3 is rotatably supported on the bracket 4. According to an embodiment of the present invention, an air suction channel may be provided on one side of the first scroll 11 away from the second scroll 12, and is used for sucking the medium into the compression chamber.
[0099] Referring to FIGS. 1 to 3, 54 and 55, in an embodiment of the present invention, the first end plate 112 includes: a port 1120 penetrating the central part of the first end plate 112; and a groove 1121 surrounding the port 1120 (see FIG. 3). Referring to FIGS. 1 to 3, the scroll compressor 100 further includes a sealing ring 86 and an exhaust member 8. The sealing ring 86 is provided in the groove 1121 and extends out from the groove 1121. The lower end 81 of the exhaust member 8 is located above the port 1120 of the first end plate 112 of the first scroll 11. The exhaust member 8 has an internal channel 80 for discharging the compressed refrigerant from the port 1120 of the first end plate 112 of the first scroll 11. The sealing ring 86 is located between the lower end 81 of the exhaust member 8 and the first end plate 112 to form a seal between the lower end 81 of the exhaust member 8 and the first end plate 112. Referring to FIG. 3, the sealing ring 86 may have a C-shaped cross section, and an opening 862 of the sealing ring 86 faces a rotational axis of the first scroll 11. A support spring may be provided in the sealing ring 86. The sealing ring 86 may have a recessed portion on the outer periphery. The scroll compressor 100 may further include an anti-rotation pin. The anti-rotation pin is fixed to the first end plate 112 of the first scroll 11 and has a stopper part protruding into the groove 1121, and the stopper part cooperates with the recessed portion of the sealing ring 86 to prevent the sealing ring 86 from rotating relative to the first scroll 11.
[0100] As shown in FIG. 47, the first scroll 11 further includes a sealing member 119 provided in a groove at an end portion of the first scroll wrap 113, and the second scroll 12 further includes a sealing member 129 provided in a groove at an end portion of the second scroll wrap 124. The second scroll 12 further includes: a counterweight hole formed in the second end plate 123; a counterweight pin 127 provided in the counterweight hole; and a metal sealing ring 128 that seals the counterweight hole.
[0101] Referring to FIGS. 1, 2, 4, 7, 10, 54 and 55, in an embodiment of the present invention, the driving member 3 includes: a hub portion 31 having an inner hole 30, the hub portion 31 including a first end portion 311 and a second end portion 312 opposite to each other; and a flange portion 32 extending radially outward from the first end portion 311 of the hub portion 31 of the driving member 3, the second end plate 123 of the second scroll 12 being rotatably supported on the flange portion 32 of the driving member 3.
[0102] Referring to FIGS. 1 to 3, 54 and 55, in an embodiment of the present invention, the scroll compressor 100 further includes a scroll cover 6. The scroll cover 6 includes: an end plate 61 having a center hole 60; and a cylindrical portion 62 extending downward from an outer periphery 610 of the end plate 61, wherein the cylindrical portion 62 of the scroll cover 6 is connected to the flange portion 32 of the driving member 3, and the end plate 61 of the scroll cover 6 is connected to the first end plate 112 of the first scroll 11. The exhaust member 8 passes through the center hole 60 of the end plate 61 of the scroll cover 6. At least a part (e.g., an annular disc-shaped part 91) of the heat shield 9 is provided between the partition wall 103 and the scroll cover 6.
[0103] Referring to FIGS. 1, 34 to 39 and 54, in an embodiment of the present invention, the scroll compressor 100 further includes: a housing 101, a partition wall 103 provided in the housing 101, and a heat shield 9. As shown in FIG. 1, the partition wall 103 divides a space 105 in the housing 101 into a first space 107 located below the partition wall 103 and a second space 109 located above the partition wall 103. The partition wall 103 has an opening 1030 at a central part, and the upper end 82 of the exhaust member 8 is connected to an edge 1031 of the opening 1030 of the partition wall 103, which is used for discharging the compressed refrigerant from the port 1120 of the first end plate 112 of the first scroll 11 to the second space 109 located above the partition wall 103. The heat shield 9 is provided between the partition wall 103 and the first end plate 112 of the first scroll 11. The heat shield 9 is connected to the housing 101. For example, the heat shield 9 is connected to the housing 101 by welding. The heat shield 9 may be formed by a metal plate through a stamping process. The heat shield 9 may be a thin-walled metal part.
[0104] Referring to FIGS. 37 to 39, in one embodiment of the present invention, the heat shield 9 includes an annular disc-shaped part 91 and has a center hole 90, and the exhaust member 8 passes through the center hole 90 of the heat shield 9.
[0105] Referring to FIGS. 34 to 36, in another embodiment of the present invention, the heat shield 9 includes an annular disc-shaped part 91 and a cylindrical part 92 extending downward from an inner periphery of the annular disc-shaped part 91. Referring to FIG. 1, the lower portion 83 of the exhaust member 8 is provided in the cylindrical part 92 of the heat shield 9.
[0106] Referring to FIGS. 1, 34 to 36 and 54, in an embodiment of the present invention, the disc-shaped part 91 of the heat shield 9 is spaced apart from the end plate 61 of the scroll cover 6. An air suction channel 65 is formed between an outer peripheral surface 920 of the cylindrical part 92 of the heat shield 9 and a hole wall 601 of the center hole 60 of the end plate 61 of the scroll cover 6, and the refrigerant to be compressed from a compressor suction port 106 enters the compression chamber of the first scroll 11 and the second scroll 12 through a gap between the disc-shaped part 91 of the heat shield 9 and the end plate 61 of the scroll cover 6, the air suction channel 65, a gap formed between the end plate 61 of the scroll cover 6 and the first end plate 112 of the first scroll 11, and gaps between the inner wall of the cylindrical portion 62 of the scroll cover 6 and the first scroll 11 and the second scroll 12.
[0107] Referring to FIGS. 1 and 54, when the heat shield 9 in FIG. 1 is replaced with the heat shield 9 shown in FIGS. 37 to 39, the exhaust member 8 passes through the center hole 90 of the heat shield 9. The disc-shaped part 91 of the heat shield 9 is spaced apart from the end plate 61 of the scroll cover 6. An air suction channel 65 is formed between the outer peripheral surface 85 of the exhaust member 8 and the hole wall 601 of the center hole 60 of the end plate 61 of the scroll cover 6, and the refrigerant to be compressed from the compressor suction port 106 enters the compression chamber of the first scroll 11 and the second scroll 12 through a gap between the disc-shaped part 91 of the heat shield 9 and the end plate 61 of the scroll cover 6, the air suction channel 65, a gap between the end plate 61 of the scroll cover 6 and the first end plate 112 of the first scroll 11, and gaps between the inner wall of the cylindrical portion 62 of the scroll cover 6 and the first scroll 11 and the second scroll 12.
[0108] Referring to FIGS. 1, 34 to 39 and 54, in the embodiment of the present invention, the disc-shaped part 91 of the heat shield 9 has an upwardly convex shape. Referring to FIGS. 37 to 39, the heat shield 9 further includes a flange 93 extending outward from the lower end of the cylindrical part 92, and the flange 93 is adjacent to the first end plate 112 of the first scroll 11. Thus, the heat shield 9 is more stably positioned.
[0109] Referring to FIGS. 2, 3 and 55, an exhaust valve piece 811 and an exhaust valve cover 812 are fixed to the exhaust member 8 by bolts. An exhaust member sealing ring 813 forms a seal between the exhaust member 8 and the partition wall 103.
[0110] Referring to FIGS. 1, 10 and 54, in an embodiment of the present invention, the scroll compressor 100 further includes a fixed shaft 5, wherein the lower end 51 of the fixed shaft 5 is fixed to the bracket 4, and the hub portion 31 of the driving member 3 is rotatably mounted on the fixed shaft 5. Referring to FIG. 10, for example, a part of the fixed shaft 5 is inserted into the cylindrical portion 41 of the bracket 4 and fixed to the cylindrical portion 41 of the bracket 4, and the fixed shaft 5 has a cylindrical shape. The lower end 51 of the fixed shaft 5 may be fixed to the bracket 4 by interference fit or threaded connection. Referring to FIG. 10, the bracket 4 includes a cylindrical portion 41, wherein the second end portion 312 of the hub portion 31 of the driving member 3 is rotatably supported on the cylindrical portion 41 of the bracket 4. The scroll compressor 100 may further include a thrust bearing 54 provided between the second end portion 312 of the hub portion 31 of the driving member 3 and the cylindrical portion 41 of the bracket 4. The thrust bearing 54 may be a thrust ball bearing, for example, an angular contact thrust ball bearing. The thrust bearing 54 includes an inner ring 541 and an outer ring 542. The fixed shaft 5 has a shaft shoulder 52, the inner ring 541 of the thrust bearing 54 is located between the shaft shoulder 52 of the fixed shaft 5 and the cylindrical portion 41 of the bracket 4, and the second end portion 312 of the hub portion 31 of the driving member 3 is rotatably supported on the outer ring 542 of the thrust bearing 54.
[0111] Referring to FIGS. 1, 47 and 54, in an embodiment of the present invention, the scroll compressor 100 further includes an oil feed bolt 55, and the upper end of the oil feed bolt 55 is fixed in a hole of a hub portion 121 (see, for example, FIGS. 2 and 3) of the second scroll 12 through a retaining ring 550.
[0112] Referring to FIGS. 11 to 13, 15 to 26, 28 to 31 and 48 to 53, the flange portion 32 has an upper surface 321, and the second end plate 123 of the second scroll 12 has a lower surface 1230 (see, for example, FIG. 3). One of the upper surface 321 of the flange portion 32 and the lower surface 1230 of the second end plate 123 of the second scroll 12 has an annular thrust surface 3210. In the embodiment shown in the figures, the upper surface 321 of the flange portion 32 is shown to have an annular thrust surface 3210 and an oil groove.
[0113] Referring to FIGS. 15 to 26 and 49 to 53, in an embodiment of the present invention, the oil groove includes a first oil groove 331 on the annular thrust surface 3210. The first oil groove 331 extends laterally in a direction from a radially inner side of the annular thrust surface 3210 toward a radially outer side of the annular thrust surface 3210 to transverse a part of the annular thrust surface 3210, and the first oil groove 331 is spaced apart from the radially outer edge 3211 of the annular thrust surface 3210 in a radial direction. The first oil groove 331 may extend in the radial direction or in a direction forming an acute angle with the radial direction. According to an example of the present invention, the first oil groove 331 extends from a radially inner edge 3212 of the annular thrust surface 3210. The first oil groove 331 may also extend from other positions. For example, the position is radially at a certain distance from the radially inner edge 3212 of the annular thrust surface 3210. In the embodiment shown in the figures, the annular thrust surface 3210 extends from an edge 300 of the inner hole 30 of the hub portion 31 in the radial direction of the hub portion 31. For example, the first oil groove 331 extends from the edge 300 of the inner hole 30 of the hub portion 31 toward the radially outer side of the annular thrust surface 3210, and is communicated with the inner hole 30. The annular thrust surface 3210 may also extend from other positions in the radial direction of the hub portion 31. For example, the position is radially at a certain distance from the edge 300 of the inner hole 30 of the hub portion 31. In an embodiment of the present invention, the first oil groove 331 may be at least one oil groove, or two or more oil grooves spaced apart in a circumferential direction at a certain interval (such as equal intervals). By providing the first oil groove on the thrust surface, even if the compressor operates at high speed, the first oil groove can store lubricating oil and supply lubricating oil to a friction pair of the driving member and the second scroll.
[0114] Referring to FIGS. 3 and 15 to 26, in an embodiment of the present invention, the lower surface 1230 of the second end plate 123 of the second scroll 12 further has an annular recessed portion 122. The annular recessed portion 122 is on the radially inner side of the annular thrust surface 3210. The first oil groove 331 extends laterally from the radially outer edge 1220 of the annular recessed portion 122 toward the radially outer side of the annular thrust surface 3210, and is communicated with the annular recessed portion 122.
[0115] Referring to FIGS. 18 to 26, 28 to 31 and 50 to 53, in an embodiment of the present invention, the oil groove further includes: a second oil groove 332 provided, on the radially outer side of the annular thrust surface 3210, on the one of the upper surface 321 of the flange portion 32 and the lower surface 1230 (see, for example, FIG. 3) of the second end plate 123 of the second scroll 12, the second oil groove 332 extending around the annular thrust surface 3210. In the embodiment shown in the figures, the upper surface 321 of the flange portion 32 is shown to have the second oil groove 332. Referring to FIGS. 15 to 26, in an embodiment of the present invention, the depth of the second oil groove 332 is greater than the depth of the first oil groove 331. The second oil groove 332 can store lubricating oil, and can prevent, in the radial direction, the lubricating oil from flowing directly out of the thrust surface from the first oil groove due to centrifugal force.
[0116] Referring to FIGS. 18 to 20, 24 to 26, 28 to 31, 50, 52 and 53, in an embodiment of the present invention, the second oil groove 332 is a closed annular oil groove. Referring to FIGS. 24 to 27, 31 and 32, in an embodiment of the present invention, the scroll compressor 100 further includes a retaining ring 35 provided in the second oil groove 332. Referring to FIGS. 26 and 27, the retaining ring 35 may have a rectangular cross section or a square cross section, and the retaining ring 35 may be solid. In the embodiment shown in FIGS. 31 to 33, the retaining ring 35 has a C-shaped cross section; the retaining ring 35 has an opening 351; the opening 351 faces the rotational axis of the driving member 3; the outer portion of the retaining ring may be a C-shaped part 352 made of a wear-resistant material (such as Teflon material); and a spring 353 is provided inside the retaining ring as a supporting structure. In other words, the retaining ring 35 shown in each of FIGS. 27 and 32 may be placed in the second oil groove 332 of the driving member 3 shown in each of FIGS. 18 to 20 and 28 to 30. The retaining ring can block a part of the lubricating oil from flowing radially out of a contact region between the driving member and the second scroll.
[0117] Referring to FIGS. 11 to 13, 15 to 26, 28 to 31 and 48 to 53, in an embodiment of the present invention, the driving member 3 further includes an eccentric ring hole 326 in the upper surface 321 of the flange portion 32. The driving member 3 may have three eccentric ring holes 326. In the embodiments shown in FIGS. 18 to 20, 24 to 26 and 50, a part of the second oil groove 332 corresponding to the eccentric ring hole 326 is located on the inner side of the eccentric ring hole 326 in the radial direction of the hub portion 31. In the embodiments shown in FIGS. 21 to 23 and 51, the second oil groove 332 includes a plurality of second oil groove sections 3320. Each of the plurality of second oil groove sections 3320 is located between adjacent eccentric ring holes 326, and an end portion 3321 of each of the plurality of second oil groove sections 3320 is communicated with the eccentric ring hole 326. The second oil groove 332 may extend along a circle, the center of which is on the rotational axis of the driving member 3. In the embodiments shown in FIGS. 28 to 31, 52 and 53, the scroll compressor 100 further includes: an annular second oil groove 332 provided, on the radially outer side of the annular thrust surface 3210, on the one of the upper surface 321 of the flange portion 32 and the lower surface 1230 (see, for example, FIG. 3) of the second end plate 123 of the second scroll 12. The second oil groove 332 may extend along a circle, the center of which is on the rotational axis of the driving member 3, and a part of the second oil groove 332 corresponding to the eccentric ring hole 326 is located on the outer side of the eccentric ring hole 326 in the radial direction of the hub portion 31. In the embodiments shown in FIGS. 28 to 31, the first oil groove 331 is removed, and only the second oil groove 332 is retained, and the eccentric ring hole 326 is in the second oil groove 332.
[0118] Referring to FIGS. 11, 12, 15, 16, 18, 19, 21, 22, 24, 25 and 48 to 53, in some embodiments of the present invention, the driving member 3 further includes an oil drain hole 325, the oil drain hole 325 is located at the radially outer side of the annular thrust surface 3210 and penetrates the flange portion 32. Referring to FIGS. 19 and 20, in some other embodiments of the present invention, the driving member 3 further includes an oil drain hole 325, the oil drain hole 325 penetrates the flange portion 32, and the oil drain hole 325 is located at a part close to the radially outer side of the annular thrust surface 3210. In the embodiments shown in the figures, the driving member 3 includes three oil drain holes 325. The oil drain holes 325 may be any suitable number of oil drain holes 325. When the lubricating oil flows to the end of the thrust surface, the lubricating oil will flow into the oil drain holes and finally flow back to an oil pool at the bottom.
[0119] Referring to FIGS. 3, 18 to 26 and 28 to 31, in an embodiment of the present invention, the lower surface 1230 of the second end plate 123 of the second scroll 12 has the annular thrust surface 3210, and the second oil groove 332 is provided on the lower surface 1230 of the second end plate 123 of the second scroll 12. The second oil groove 332 extends along a circle, the center of which is on the rotational axis of the second scroll 12.
[0120] Referring to FIGS. 11 to 14, in some embodiments of the present invention, the scroll compressor 100 further includes an annular wedge-shaped protrusion 36 protruding from the annular thrust surface 3210. Referring to FIG. 14, the cross section of the wedge-shaped protrusion 36 in the radial direction has a wedge shape, and the wedge-shaped protrusion 36 has an axially outward wedge-shaped protrusion surface 360. In a cross section in the radial direction, the axial distance between the first wedge-shaped protrusion point 361 of the wedge-shaped protrusion surface 360 in the radial direction and the annular thrust surface 3210 is the largest, and the axial distance between the second wedge-shaped protrusion point 362 of the wedge-shaped protrusion surface 360 in the radial direction and the annular thrust surface 3210 is zero. The first wedge-shaped protrusion point 361 may be on a radially outer side or radially inner side of the second wedge-shaped protrusion point 362. In the embodiments shown in the figures, the second wedge-shaped protrusion point 362 is located at the edge 300 of the inner hole 30 of the hub portion 31. In an embodiment of the present invention, referring to FIGS. 3 and 14, the second wedge-shaped protrusion point 362 may be located at the radially outer edge 1220 of the annular recessed portion 122. The second wedge-shaped protrusion point 362 may also be at a certain distance from the edge 300 of the inner hole 30 of the hub portion 31 in the radial direction, and the second wedge-shaped protrusion point 362 may also be at a certain distance from the radially outer edge 1220 of the annular recessed portion 122. At the first wedge-shaped protrusion point 361, the axial distance between the wedge-shaped protrusion surface 360 and the surface 321 of the flange portion 32 is in the range of 0.1 m to 1 mm. In the embodiments shown in FIGS. 11 to 14 and 48, the annular thrust surface 3210 of the upper surface 321 is provided with the annular wedge-shaped protrusion 36, but the first oil groove 331 and the second oil groove 332 are not provided; while in the embodiments shown in FIGS. 28 to 31, the annular thrust surface 3210 of the upper surface 321 is provided with the annular wedge-shaped protrusion 36 and the second oil groove 332, but the first oil groove 331 is not provided. Providing the wedge-shaped protrusion on the thrust surface is advantageous to form an oil film between the second scroll and the driving member.
[0121] Referring to FIGS. 1 to 4, 11, 12, 15, 16, 18, 19, 21, 22, 24, 25, 28, 29, 54 and 55, in an embodiment of the present invention, the flange portion 32 of the driving member 3 has a driving member connecting hole 323. The driving member connecting hole 323 of the flange portion 32 of the driving member 3 has a threaded portion. As shown in FIGS. 1 to 3, the scroll cover 6 is fixedly connected to the flange portion 32 of the driving member 3 through the threaded connection between a bolt and the threaded portion of the driving member connecting hole 323, and the scroll cover 6 is also connected to the first scroll 11 through a bolt, so that the driving member 3 is fixedly connected to the first scroll 11.
[0122] Referring to FIGS. 11, 12, 15, 16, 18, 19, 21, 22, 24, 25, 28 and 29, in an embodiment of the present invention, the flange portion 32 of the driving member 3 has a driving member pin hole 322. The scroll cover 6 has a scroll cover pin hole, and a pin is inserted into the scroll cover pin hole and the driving member pin hole 322 of the flange portion 32 of the driving member 3 to determine the relative position of the scroll cover 6 and the driving member 3, thereby determining the relative position of the first scroll 11 and the driving member 3. A rotor 71 of the motor 7 drives the first scroll 11 to rotate through the driving member 3 and the scroll cover 6, and the first scroll 11 drives the second scroll 12 to rotate.
[0123] Referring to FIGS. 14 and 28 to 31, in an embodiment of the present invention, the scroll compressor 100 further includes: an annular wedge-shaped protrusion 36 protruding from the annular thrust surface 3210, and an annular second oil groove 332 provided, on the radially outer side of the annular thrust surface 3210, on one of the upper surface 321 of the flange portion 32 and the lower surface 1230 of the second end plate 123 of the second scroll 12. Referring to FIG. 14, a cross section of the wedge-shaped protrusion 36 in the radial direction has a wedge shape, and the wedge-shaped protrusion 36 has a wedge-shaped protrusion surface 360. In the cross section in the radial direction, the axial distance between the first wedge-shaped protrusion point 361 of the wedge-shaped protrusion surface 360 in the radial direction and the annular thrust surface 3210 is the largest, and the axial distance between the second wedge-shaped protrusion point 362 of the wedge-shaped protrusion surface 360 in the radial direction and the annular thrust surface 3210 is zero. The second oil groove 332 extends along a circle, the center of which is on the rotational axis of the driving member 3. An eccentric ring hole 326 may be provided in the annular thrust surface 3210 of the upper surface 321 of the flange portion 32.
[0124] Referring to FIGS. 2 to 4, in an embodiment of the present invention, an eccentric ring 341 is provided in the eccentric ring hole 326 in the flange portion 32 of the driving member 3, and a coupling pin 342 is inserted into a coupling pin hole formed in the second end plate 123 of the second scroll 12 and the hole of the eccentric ring 341. A bearing 56 is mounted in a hole at the top of the fixed shaft 5 through a shaft sleeve 561 and a pin column. The shaft sleeve 561 has a driving surface 5610, and cooperates with the pin column 59 (FIG. 47) to allow a certain flexibility or clearance in the radial direction. The driving surface 5610 may be a plane, or include a plane and a curved surface. A bearing 58 is mounted in the inner hole 30 of the hub portion 31 of the driving member 3 through a shaft sleeve 581. A bearing retaining ring 582 is used to prevent the bearing 58 and the shaft sleeve 581 from falling off.
[0125] Referring to FIGS. 1 and 54, in an embodiment of the present invention, the motor 7 includes a rotor 71 fixed to the driving member 3 and a stator 72 fixed to the bracket 4. Referring to FIG. 1, in an embodiment of the present invention, the motor 7 may be an axial flux motor or a radial flux motor.
[0126] Referring to FIGS. 10, 40, 41, 44, 45 and 46, the bracket 4 includes: a cylindrical portion 41; a flange portion 42 extending outward from the cylindrical portion 41; and a cylindrical wall 43 surrounding the flange portion 42, wherein the upper end of the cylindrical wall 43 has two opposite notches 430, and the cylindrical wall 43 has a through channel 431 extending from the upper end to the lower end. Referring to FIGS. 40 to 43, a motor cover 73 includes a cylindrical portion 732 and an annular partition wall 733 provided in the cylindrical portion 732, the upper cylindrical part of the cylindrical portion 732 located above the annular partition wall 733 surrounds the flange portion 32 of the driving member 3, and the lower cylindrical part of the cylindrical portion 732 located below the annular partition wall 733 surrounds the motor 7. The upper cylindrical part of the cylindrical portion 732 located above the annular partition wall 733 may also surround a part of the cylindrical portion 62 of the scroll cover 6. The lower end of the cylindrical portion 732 of the motor cover 73 has two opposing notches 730, and the cylindrical portion 732 of the motor cover 73 has a through channel 731 extending from the upper surface of the partition wall 733 to the lower end of the cylindrical portion 732. The channel 731 of the cylindrical portion 732 of the motor cover 73 is communicated with the channel 431 of the cylindrical wall 43 of the bracket 4. The annular partition wall 733 has an annular protrusion 734 protruding upward at an inner edge. The bracket 4 and the motor cover 73 form a motor shell, and the motor shell has an inlet 94 communicated with the compressor suction port 106 provided on the housing 101, and an outlet 95 opposite to the inlet 94.
[0127] A notch 430 of the cylindrical wall 43 of the bracket 4 and the notch 730 of the cylindrical portion 732 of the motor cover 73 form an inlet 94 and an outlet 95 of the motor shell. The rotor 71 and the stator 72 of the motor 7 are located in the motor shell formed by the bracket 4 and the motor cover 73. The stator 72 of the motor 7 may be mounted on the motor cover 73 by bolts, for example on the partition wall 733, for example on the boss 736 (FIG. 43) of the partition wall 733.
[0128] The motor cover 73 has a flange at the bottom, and the flange has bolt holes for fixing the motor cover 73 to the bracket 4. The motor cover 73 further includes an inverted U-shaped baffle 735 extending from the outer surface of the cylindrical portion 732. When viewed from the radial direction of the cylindrical portion 732 of the motor cover 73, the notch 730 forming the inlet 94 of the motor shell is located on the inner side of the baffle 735, which is used to block the upward movement of airflow and prevent the refrigerant from directly entering the compression chamber through the compressor suction port 106, so that the refrigerant from the compressor suction port 106 directly enters the inlet 94 of the motor shell and flows out from the outlet 95 of the motor shell. Thus, the refrigerant entering from the compressor suction port 106 will first enter the motor shell through the inlet 94 of the motor shell formed by the motor cover 73 and the bracket 4, and forcedly provide cooling for the motor. Thereafter, a refrigerant gas flows out from the outlet 95 of the motor shell formed by the notch 430 of the cylindrical wall 43 of the bracket 4 and the notch 730 of the cylindrical portion 732 of the motor cover 73, and then moves upward to the compression chamber. The lubricating oil passing through the flange portion 32 of the driving member 3, the first scroll 11, the second scroll 12 and other components flows back to the oil groove at the bottom of the housing 101 through an oil return channel formed by the channel 731 of the cylindrical portion 732 of the motor cover 73 and the channel 431 of the cylindrical wall 43 of the bracket 4. The annular protrusion 734 is used to prevent the lubricating oil from dripping from the opening of the annular partition wall 733 onto the motor 7, ensuring that the lubricating oil can only flow from the oil return channel to the oil groove at the bottom of the housing 101. The inlet 94 and the outlet 95 of the motor shell may also be formed by only the notch 730 of the cylindrical portion 732 of the motor cover 73. In addition, the oil return channel may also be formed only by the channel 731 of the cylindrical portion 732 of the motor cover 73. In this case, a hole may be provided on the bracket 4, or a channel may be formed at a corresponding position between the bracket 4 and the housing 101. By providing the oil return channel, the lubricating oil accumulated on the top of the motor cover 73 flows to the oil groove at the bottom of the housing 101 without flowing into the motor shell. According to the embodiment of the present invention, the cooling effect on the motor can be enhanced while achieving oil-gas separation. Furthermore, the manufacture of the compressor is made easier.
[0129] When the compressor 100 is operating, referring to FIG. 1, the rotor 71 of the motor 7 drives the first scroll 11 to rotate through the driving member 3 and the scroll cover 6, and the first scroll 11 drives the second scroll 12 to rotate. The refrigerant to be compressed enters the motor shell through the compressor suction port 106 and the inlet 94 of the motor shell formed by the bracket 4 and the motor cover 73. A part of the refrigerant flows to the side opposite to the compressor suction port 106 through a gap between the rotor 71 and the stator 72 of the motor 7, and another part of the refrigerant flows to the side opposite to the compressor suction port 106 through a gap between the stator 72 of the motor 7 and the flange portion 32 of the driving member 3, so as to cool the motor. Then, the refrigerant flows out of the motor shell through the outlet 95 of the motor shell formed by the bracket 4 and the motor cover 73. The refrigerant flowing out of the motor shell flows upward and enters the compression chamber formed by the first scroll 11 and the second scroll 12 through a gap between the disc-shaped part 91 of the heat shield 9 and the end plate 61 of the scroll cover 6, the air suction channel 65, a gap formed between the end plate 61 of the scroll cover 6 and the first end plate 112 of the first scroll 11, and gaps between the inner wall of the cylindrical portion 62 of the scroll cover 6 and the first scroll 11 and the second scroll 12. The compressed refrigerant enters the second space 109 through the port 1120 of the first end plate 112 and the internal channel 80 of the exhaust member 8, and is then discharged through the outlet 108. At the same time, the second scroll 12 drives the oil feed bolt 55 provided in the axial inner hole 50 of the fixed shaft 5 to rotate, and the lubricating oil contained in the oil groove at the bottom of the housing 101 is sucked into the axial inner hole 50 of the fixed shaft 5 through a filter 155 (FIG. 47). Referring to FIG. 2, part of the lubricating oil enters the gap between the hub portion 121 of the second scroll 12 and the bearing 56 to lubricate the bearing 56, and part of the lubricating oil that enters the gap between the hub portion 121 of the second scroll 12 and the bearing 56 enters the gap between the second end plate 123 of the second scroll 12 and the flange portion 32 of the driving member 3. Part of the lubricating oil that enters the gap between the hub portion 121 of the second scroll 12 and the bearing 56 enters the bearing 58 through a through hole 864 (FIG. 9) and bypasses the upper end of the bearing 56 to enter the bearing 58, and part of the lubricating oil enters the oil return channel 862 formed in the fixed shaft 5, enters the thrust bearing 54, and then flows into the oil groove at the bottom of the housing 101 through a recessed portion 863 (FIGS. 8 and 9) on the surface of the fixed shaft 5, a recessed portion on the inner wall of the cylindrical portion 41 of the bracket 4, and a through hole penetrating the cylindrical portion 41 and/or a through hole penetrating the flange portion 42 of the bracket 4. The lubricating oil passing through the flange portion 32 of the driving member 3, the first scroll 11, the second scroll 12 and other components flows back to the oil groove at the bottom of the housing 101 through an oil return channel formed by the channel 731 of the cylindrical portion 732 of the motor cover 73 and the channel 431 of the cylindrical wall 43 of the bracket 4. A plurality of oil return channels, for example, 4 oil return channels, may be provided.
[0130] According to the compressor of the embodiment of the present invention, by providing the first oil groove and/or the second oil groove, when the compressor is operating, the lubricating oil is pumped from the oil pool at the bottom to the thrust surface through the inner hole 30 of the hub portion 31, and the lubricating oil flows from the inner side of the thrust surface of the driving member to the outer side of the thrust surface by means of centrifugal force. More oil can be stored by means of the first oil groove and/or the second oil groove to form an oil film, and the lubricating oil can be partially prevented from flowing out of the thrust surface.
[0131] According to the compressor of the embodiment of the present invention, the lubrication performance between the driven scroll and the driving member of the scroll compressor at high speed is improved by providing the oil groove and/or the wedge-shaped protrusion on the annular thrust surface of the driving member.
[0132] According to the technical solution of the embodiment of the present invention, by providing the heat shield, the influence of high-temperature refrigerant discharged from the compression chamber on the refrigerant to be compressed that will be sucked into the compression chamber formed by the first scroll and the second scroll is reduced.
[0133] According to the compressor of the embodiment of the present invention, the heat shield can guide the refrigerant into the air suction channel.
[0134] According to the compressor of the embodiment of the present invention, by providing the heat shield, the high-temperature refrigerant is blocked from transferring harmful heat to the vicinity of the scroll cover, and the influence of the high-temperature refrigerant discharged from the compression chamber on the refrigerant to be compressed that will be sucked into the compression chamber formed by the first scroll and the second scroll is reduced. The degree of overheating of the refrigerant to be compressed that will be sucked into the compression chamber formed by the first scroll and the second scroll is reduced. In addition, it is easy to manufacture and mount the heat shield.
[0135] According to the compressor of the embodiment of the present invention, it is possible to partially prevent lubricating oil from flowing out of the thrust surface at high speed.
[0136] After the scroll cover is added, the relatively closed cavity formed by the scroll cover and the driving member helps to improve the air suction efficiency of the co-rotating compressor.
[0137] The channel formed between the added motor cover and the bracket is advantageous to cool the motor by using the low-temperature refrigerant to prevent the motor from overheating.
[0138] Although the above embodiments have been described, some features in the above embodiments may be combined to form new embodiments.
[0139] For example, although the wedge-shaped protrusion 36 is shown only in the embodiments shown in FIGS. 11 to 14 and 48, the wedge-shaped protrusion 36 may be provided in the driving member 3 in each embodiment.
[0140] While the present disclosure has been illustrated and described with respect to a particular embodiment thereof, it should be appreciated by those of ordinary skill in the art that various modifications to this disclosure may be made without departing from the spirit and scope of the present disclosure.
