Scroll and scroll compressor having the same

Abstract

Embodiments of the present invention relate to a scroll for a scroll compressor and a scroll compressor having the same. The scroll includes an end plate, a scroll wrap extending from the end plate in an axial direction, the scroll wrap including a scroll wrap body having an inner end near a center of the scroll wrap body in a radial direction and an outer end away from the center of the scroll wrap body in the radial direction, and an end surface extending from the inner end to the outer end on a side of the scroll wrap body away from the end plate in the axial direction, and a plurality of recess groups arranged in a thickness direction of the scroll wrap body, each of the recess groups including at least one recess formed in the end surface of the scroll wrap body. With the scroll for a scroll compressor and the scroll compressor according to embodiments of the present invention, thereby, for example, sealing performance between the stationary scroll and the end plate or between the driving scroll and the driven scroll can be improved.

Description

Technical Field

[0001] Embodiments of the present invention relate to a scroll disk for a scroll compressor and a scroll compressor having the scroll disk. Background Technology

[0002] The scroll compressor includes a first scroll plate and a second scroll plate, which form multiple sealed compression chambers. Summary of the Invention

[0003] The purpose of embodiments of the present invention is to provide a scroll plate for a scroll compressor and a scroll compressor having the scroll plate, thereby improving, for example, the sealing performance between at least one of the first scroll plate and the second scroll plate and the end plate.

[0004] According to an embodiment of the present invention, a scroll disk for a scroll compressor is provided, comprising: an end plate; a scroll extending axially from the end plate, the scroll comprising: a scroll body having: an inner end near the center of the scroll body in a radial direction and an outer end radially away from the center of the scroll body; and an end face extending from the inner end to the outer end on a side of the scroll body away from the end plate in the axial direction; and a plurality of recess groups arranged in the thickness direction of the scroll body, each recess group including at least one recess formed in the end face of the scroll body.

[0005] According to an embodiment of the invention, each set of recesses includes a plurality of recesses extending along a portion of the length of an inner end to an outer end along the end face of the spiral body.

[0006] According to an embodiment of the present invention, the plurality of recess groups are three or four recess groups, each recess group comprising a plurality of recesses extending along a portion of the length of the end face of the spiral roll body.

[0007] According to an embodiment of the present invention, the vortex roll body further has an inner side facing the center and an outer side away from the center, the inner side and the outer side facing each other in the thickness direction of the vortex roll body, and at least one recess of at least one recess group of the plurality of recess groups is parallel to the inner side or the outer side of the vortex roll body.

[0008] According to an embodiment of the present invention, each recess group includes a plurality of recesses extending along a portion of the length of the end face of the scroll body, and the plurality of recesses in each of the plurality of recess groups are parallel to the outer surface of the scroll body.

[0009] According to an embodiment of the present invention, each recess group includes: a plurality of recesses extending along a portion of the length of the end face of the spiral roll body; and a partition wall between adjacent recesses, wherein the partition walls of adjacent recess groups are staggered from each other.

[0010] According to an embodiment of the invention, the partition wall between adjacent recesses in the thickness direction of the vortex roll body has a trapezoidal cross-section.

[0011] According to an embodiment of the present invention, the plurality of recesses are used to form a labyrinth seal.

[0012] According to an embodiment of the present invention, the plurality of recesses are disposed at the inner end of the vortex roll body.

[0013] According to an embodiment of the present invention, the vortex roll body further comprises: a groove, the groove being formed in the end face of the vortex roll body between the inner end and the outer end and at the outer end.

[0014] According to an embodiment of the present invention, the scroll disk further includes a seal disposed in the groove.

[0015] According to an embodiment of the present invention, the groove is spaced apart from the recesses of the recess group.

[0016] According to an embodiment of the present invention, the inner and outer surfaces of the vortex roll body have an involute profile.

[0017] According to an embodiment of the present invention, a scroll compressor is also provided, comprising: a first scroll disk including a first end plate and a first scroll extending downward from the first end plate; and a second scroll disk including a second end plate and a second scroll extending upward from the second end plate, the second scroll disk and the first scroll disk cooperating to form a compression chamber for compressing a medium, wherein at least one of the first scroll disk and the second scroll disk is the scroll disk described above.

[0018] According to an embodiment of the present invention, the first scroll disk is a stationary scroll disk and the second scroll disk is a moving scroll disk.

[0019] According to an embodiment of the present invention, the scroll compressor further includes: a housing; a frame installed within the housing, wherein the first scroll disk is fixed within the housing and the second scroll disk is rotatably supported on the frame; and a drive mechanism fixed at the lower end of the housing and connected to the second scroll disk to drive the second scroll disk to rotate.

[0020] According to an embodiment of the present invention, the first scroll disk is an active scroll disk, the second scroll disk is a passive scroll disk, the first scroll disk is driven to rotate by a drive mechanism, and the second scroll disk is driven to rotate by the first scroll disk.

[0021] According to an embodiment of the present invention, the scroll compressor further includes: a bracket located below the second scroll disk, wherein the drive mechanism includes: a motor; and a drive member, the drive member including: a hub having an inner hole; and a flange extending outward from an end of the hub in a radial direction, the drive member being rotatably supported on the bracket, the motor driving the first scroll disk to rotate via the drive member, and the first scroll disk driving the second scroll disk to rotate, the second end plate of the second scroll disk being rotatably supported on the flange of the drive member.

[0022] According to an embodiment of the present invention, the driving member is connected to the first scroll disk via the flange portion.

[0023] According to an embodiment of the present invention, the scroll compressor further includes: a scroll cover, the scroll cover including: a scroll cover end plate having a central hole; and a cylindrical portion extending downward from the outer periphery of the scroll cover end plate, the cylindrical portion of the scroll cover being connected to the flange portion of the drive member, and the scroll cover end plate of the scroll cover being connected to the first end plate of the first scroll.

[0024] According to an embodiment of the present invention, the scroll compressor further includes: a fixed shaft, the lower end of which is fixed to the bracket, and the hub of the drive member is rotatably mounted on the fixed shaft.

[0025] By employing a scroll plate and a scroll compressor according to an embodiment of the present invention, the sealing performance between at least one of the first and second scroll plates and the end plate can be improved, for example. Attached Figure Description

[0026] Figure 1 This is a schematic cross-sectional view of a scroll compressor according to an embodiment of the present invention, taken along a direction parallel to the axial direction of the compressor.

[0027] Figure 2 for Figure 1 The schematic cross-sectional view of the scroll compressor shown is taken along a direction perpendicular to the compressor's axial direction, showing the compressor's stationary scroll and moving scroll.

[0028] Figure 3 for Figure 1 A schematic top view of the moving scroll of the scroll compressor shown in the figure;

[0029] Figure 4 for Figure 1 A schematic cross-sectional view of the moving scroll of the scroll compressor shown in the figure;

[0030] Figure 5 for Figure 3A partial enlarged schematic view of the moving scroll plate of the scroll compressor shown in the figure;

[0031] Figure 6 This is a schematic cross-sectional view of a scroll compressor according to another embodiment of the present invention, taken along a direction parallel to the axial direction of the compressor;

[0032] Figure 7 for Figure 6 The schematic cross-sectional view of the scroll compressor shown is taken along a direction perpendicular to the compressor's axial direction, showing the compressor's first and second scroll plates.

[0033] Figure 8 for Figure 6 A schematic top view of the second scroll disk of the scroll compressor shown;

[0034] Figure 9 for Figure 6 A schematic front view of the second scroll plate of the scroll compressor shown; and

[0035] Figure 10 for Figure 8 A schematic enlarged view of the second scroll disk of the scroll compressor shown. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0037] See Figure 1 , Figure 2 , Figure 6 , Figure 7 According to an embodiment of the present invention, a scroll compressor 100 includes a first scroll disk 20 and a second scroll disk 10. The first scroll disk 20 includes a first end plate 29 and a first scroll coil 21 extending downward from the first end plate 29. The second scroll disk 10 includes a second end plate 19 and a second scroll coil 11 extending upward from the second end plate 19. The second scroll disk 10 and the first scroll disk 20 cooperate to form a compression chamber for compressing a medium.

[0038] See Figure 1 and Figure 2 In embodiments of the present invention, the first scroll plate 20 is a stationary scroll plate, and the second scroll plate 10 is a moving scroll plate. Furthermore, the scroll compressor may also include: a housing 30; a frame 40 mounted within the housing 30, wherein the first scroll plate 20 is fixed within the housing 30, and the second scroll plate 10 is rotatably supported on the frame 40; and a drive mechanism 50, which is fixed to the lower end of the housing 30 and connected to the second scroll plate 10 to drive the second scroll plate 10 to rotate. The drive mechanism 50 may include a motor 60, a drive shaft 61, etc.

[0039] See Figure 6 , Figure 7 In an embodiment of the present invention, the first scroll plate 20 is an active scroll plate, and the second scroll plate 10 is a driven scroll plate. The first scroll plate 20 is driven to rotate by the drive mechanism 50, and the second scroll plate 10 is driven to rotate by the first scroll plate 20. The scroll compressor 100 may further include: a housing 30 and a bracket 41, the bracket 41 being located below the second scroll plate 10. The drive mechanism 50 includes: a motor 60; and a drive member 70, the drive member 70 including: a hub 72 having an inner hole 71; and a flange 73 extending outward from the end of the hub 72 in the radial direction. The drive member 70 is rotatably supported on the bracket 41. The motor 60 drives the first scroll plate 20 to rotate through the drive member 70, and the first scroll plate 20 drives the second scroll plate 10 to rotate. The second end plate 19 of the second scroll plate 10 is rotatably supported on the flange 73 of the drive member 70. The drive component 70 can be connected to the first end plate 29 of the first scroll disk 20 via the flange portion 73.

[0040] See Figure 6 , Figure 7 In an embodiment of the present invention, the scroll compressor 100 further includes: a scroll cover 80, the scroll cover 80 including: a scroll cover end plate 82 having a central hole 81; and a cylindrical portion 83 extending downward from the outer periphery of the scroll cover end plate 82, the cylindrical portion 83 of the scroll cover 80 being connected to the flange portion 73 of the drive member 70, and the scroll cover end plate 83 of the scroll cover 80 being connected to the first end plate 29 of the first scroll 20. The scroll compressor 100 may further include: a fixed shaft 90, the lower end of the fixed shaft 90 being fixed to the bracket 41, and the hub portion 72 of the drive member 70 being rotatably mounted on the fixed shaft 90.

[0041] The following is based on Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 The second scroll disk 10 shown is used as an example to describe the scroll disk according to an embodiment of the present invention.

[0042] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10In an embodiment of the invention, the scroll disk 10 includes: an end plate 19; and a scroll 11 extending axially from the end plate 19. The scroll 11 has a scroll body 110 and a plurality of recess groups 17. The scroll body 110 has: an inner end 111 near the radial center of the scroll body 110 and an outer end 112 radially away from the center of the scroll body 110; and an end face 115 extending from the inner end 111 to the outer end 112 on the side of the scroll body 110 away from the end plate 19 in the axial direction. The plurality of recess groups 17 are arranged in the thickness direction of the scroll body 110, and each recess group 17 includes at least one recess 117 formed in the end face 115 of the scroll body 110. The thickness direction can be the dimension of the scroll body 110 in the normal direction of the inner side 121 or the outer side 122. Although each recess group 17 in the accompanying drawings includes multiple recesses 117, each recess group 17 may include only one recess 117. The multiple recess groups 17 may be located at the inner end 111 of the scroll body 110.

[0043] See Figure 3 , Figure 5 , Figure 8 , Figure 10 In an embodiment of the invention, each recess group 17 includes a plurality of recesses 117 extending along a portion of the length of the end face 115 of the scroll body 110, extending from the inner end 111 to the outer end 112. According to an example of the invention, the plurality of recess groups 17 may be three or four recess groups 17, or two, five, six, or more recess groups 17, each recess group 17 including a plurality of recesses 117 extending along a portion of the length of the end face 115 of the scroll body 110.

[0044] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 In an embodiment of the invention, the scroll body 110 further has an inner side 121 facing the center and an outer side 122 away from the center, the inner side 121 and the outer side 122 being opposite to each other in the thickness direction of the scroll body 110, and at least one recess 117 of at least one recess group 17 of the plurality of recess groups 17 being parallel to the inner side 121 or the outer side 122 of the scroll body 110. Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10In the example shown, each recess group 17 includes a plurality of recesses 117 extending along a portion of the length of the end face 115 of the scroll body 110, and the plurality of recesses 117 in each of the plurality of recess groups 17 are parallel to the outer surface 122 of the scroll body 110. For example, the two opposing walls of the recesses 117 in the thickness direction of the scroll body 110 are parallel to each other and parallel to the outer surface 122 (or inner surface 121) of the scroll body 110. The two walls at the two opposing ends of the recesses 117 in the length direction of the end face 115 have an arcuate shape.

[0045] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 In an embodiment of the invention, each recess group 17 includes: a plurality of recesses 117 extending along a portion of the length of the end face 115 of the spiral body 110; and a partition wall 118 between adjacent recesses 117, and as follows Figure 5 , Figure 10 As shown, the partition walls 118 of at least some adjacent recess groups 17 are staggered from each other.

[0046] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 In an embodiment of the invention, the partition wall 119 between adjacent recesses 117 in the thickness direction of the vortex body 110 may have a trapezoidal cross-section. Alternatively, the partition wall 119 may have a rectangular cross-section, or any other suitable cross-section.

[0047] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 In an embodiment of the invention, the plurality of recesses 17 are used to form a labyrinth seal.

[0048] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10In an embodiment of the invention, a seal is formed between the scroll of the second scroll disk 10 and the end plate 29 of the first scroll disk 20. For example, a labyrinth seal is formed between the plurality of recesses 17 of the scroll 11 of the second scroll disk 10 and the end plate 29 of the second scroll disk 20, and a labyrinth seal is formed between the plurality of recesses 17 of the scroll 21 of the first stationary scroll disk 20 and the end plate 19 of the second scroll disk 10.

[0049] See Figure 3 , Figure 4 , Figure 5 , Figure 8 , Figure 9 , Figure 10 In an embodiment of the invention, the scroll body 110 further comprises a groove 18 formed in the end face 115 of the scroll body 110 between the inner end and the outer end 112 and at the outer end 112. The groove 18 can accommodate a sealing element. The groove 18 is spaced apart from the recesses 117 of the recess assembly 17.

[0050] See Figure 3 , Figure 4 and Figure 5 In an embodiment of the invention, the inner side 121 and outer side 122 of the vortex roll body 110 have an involute profile.

[0051] By employing a scroll plate and a scroll compressor according to an embodiment of the present invention, the sealing performance between at least one of the first scroll plate 20 and the second scroll plate 10 and the end plate can be improved, for example.

[0052] Using a scroll disk and a scroll compressor according to an embodiment of the present invention, for example, the leakage mass flow rate is reduced by 20% to 30% compared to the recess assembly without the embodiment of the present invention.

Claims

1. A scroll plate for a scroll compressor, comprising: End plate; A spiral coil extending axially from the end plate, the spiral coil comprising: A scroll reel body has: an inner end near the center in the radial direction of the scroll reel body and an outer end radially away from the center of the scroll reel body; and an end face extending from the inner end to the outer end on the side away from the end plate in the axial direction of the scroll reel body; and Multiple recess groups are arranged in the thickness direction of the scroll body, and each recess group includes at least one recess formed in the end face of the scroll body. The vortex roll body also has an inner side facing the center and an outer side away from the center, the inner side and the outer side facing each other in the thickness direction of the vortex roll body, at least one recess of at least one recess group of the plurality of recess groups is parallel to the inner side or the outer side of the vortex roll body, and the two walls of the recess at two opposite ends in the length direction of the end face have an arc shape.

2. The scroll disk for a scroll compressor according to claim 1, wherein: Each set of recesses includes multiple recesses extending along a portion of the length of the end face of the spiral body from the inner end to the outer end.

3. The scroll disk for a scroll compressor according to claim 1, wherein: The plurality of recess groups are three or four recess groups, each recess group comprising a plurality of recesses extending along a portion of the length of the end face of the vortex roll body.

4. The scroll disk for a scroll compressor according to claim 1, wherein: Each recess group includes a plurality of recesses extending along a portion of the length of the end face of the scroll body, and the plurality of recesses in each of the plurality of recess groups are parallel to the outer surface of the scroll body.

5. The scroll disk for a scroll compressor according to claim 1, wherein: Each set of recesses includes: a plurality of recesses extending along a portion of the length of the end face of the spiral roll body; and partition walls between adjacent recesses, and The partition walls of adjacent recess groups are staggered.

6. The scroll disk for a scroll compressor according to claim 1, wherein: The partition wall between adjacent recesses in the thickness direction of the vortex roll body has a trapezoidal cross-section.

7. The scroll disk for a scroll compressor according to claim 1, wherein: The plurality of recesses are used to form a labyrinth seal.

8. The scroll disk for a scroll compressor according to any one of claims 1 to 7, wherein: The plurality of recesses are arranged at the inner end of the vortex roll body.

9. The scroll disk for a scroll compressor according to claim 1, wherein: The vortex roll body also has a groove, which is formed in the end face of the vortex roll body between the inner end and the outer end and at the outer end.

10. The scroll plate for a scroll compressor according to claim 9, further comprising: A seal is disposed in the groove.

11. The scroll disk for a scroll compressor according to claim 9, wherein: The groove is spaced apart from the recesses of the recess group.

12. The scroll disk for a scroll compressor according to claim 1, wherein: The inner and outer surfaces of the vortex roll body have an involute profile.

13. A scroll compressor, comprising: A first scroll disk, the first scroll disk including a first end plate and a first scroll extending downward from the first end plate; as well as The second scroll disk includes a second end plate and a second scroll extending upward from the second end plate. The second scroll disk and the first scroll disk cooperate to form a compression chamber for compressing a medium. At least one of the first and second scroll disks is a scroll disk as described in any one of claims 1 to 12.

14. The scroll compressor of claim 13, wherein: The first scroll disk is a stationary scroll disk and the second scroll disk is a moving scroll disk.

15. The scroll compressor of claim 14, further comprising: case; A frame is installed inside the housing, the first scroll plate is fixed inside the housing, and the second scroll plate is rotatably supported on the frame; as well as A drive mechanism is fixed to the lower end of the housing and connected to the second scroll plate to drive the second scroll plate to rotate.

16. The scroll compressor of claim 13, wherein: The first scroll plate is an active scroll plate, and the second scroll plate is a passive scroll plate. The first scroll plate is driven to rotate by a drive mechanism, and the second scroll plate is driven to rotate by the first scroll plate.

17. The scroll compressor of claim 16, further comprising: A support frame, located below the second scroll plate. The drive mechanism includes: Electric motor; and A drive member, comprising: a hub having an inner hole; and a flange extending outwardly from an end of the hub in a radial direction therefrom, the drive member being rotatably supported on a bracket, a motor driving a first scroll disk to rotate via the drive member, and the first scroll disk driving a second scroll disk to rotate, the second end plate of the second scroll disk being rotatably supported on the flange of the drive member.

18. The scroll compressor of claim 17, wherein: The drive component is connected to the first end plate of the first scroll plate via the flange portion.

19. The scroll compressor according to claim 18, further comprising: A scroll plate cover includes: a scroll plate cover end plate having a central hole; and a cylindrical portion extending downward from the outer periphery of the scroll plate cover end plate, the cylindrical portion of the scroll plate cover being connected to a flange portion of a drive member, and the scroll plate cover end plate of the scroll plate cover being connected to a first end plate of a first scroll plate.

20. The scroll compressor according to claim 18, further comprising: A fixed shaft, the lower end of which is fixed to the bracket, and the hub of the drive member is rotatably mounted on the fixed shaft.

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