CN117552954A - Thrust structure of compressor - Google Patents
Thrust structure of compressor Download PDFInfo
- Publication number
- CN117552954A CN117552954A CN202311574712.XA CN202311574712A CN117552954A CN 117552954 A CN117552954 A CN 117552954A CN 202311574712 A CN202311574712 A CN 202311574712A CN 117552954 A CN117552954 A CN 117552954A
- Authority
- CN
- China
- Prior art keywords
- thrust
- crankshaft
- compressor
- groove
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000005461 lubrication Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 23
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a thrust structure of a compressor, which comprises: the novel anti-thrust device comprises a crankshaft, a thrust assembly, a supporting seat, a movable disc assembly and an auxiliary bearing, wherein one end of the crankshaft is connected with a movable vortex disc of a compressor through the movable disc assembly, the other end of the crankshaft is provided with the auxiliary bearing, the auxiliary bearing is arranged in the supporting seat, a limiting groove group or an annular thrust groove is formed in the other end of the crankshaft, an annular thrust groove or a limiting groove group is formed in the supporting seat, and the thrust assembly is supported between the limiting groove group and the annular thrust groove. By applying the invention, a thrust structure suitable for a compressor is provided, so that the friction coefficient of an end structure of a crankshaft subjected to axial thrust is reduced, and the lubrication effect is improved; the invention has simple structure, utilizes the end space of the crankshaft as much as possible and has lower cost.
Description
Technical Field
The invention relates to the technical field of compressors, in particular to a thrust structure of a compressor.
Background
At present, a corresponding crankshaft and a bearing structure arranged on the crankshaft are more commonly arranged in the compressor, but the crankshaft of the compressor is affected by various working conditions in the working process, and a certain axial load can be generated on the crankshaft. However, since the sliding bearing and the like cannot effectively bear such axial load, it is common practice in the prior art to use an angular thrust bearing or even a thrust bearing, but this will also greatly increase the manufacturing cost of the compressor, and if a wear-resistant pad and the like are used, the lubrication effect will be not ideal enough, resulting in more consumed friction work and reduced performance of the compressor.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a compressor thrust structure, comprising: the novel anti-thrust device comprises a crankshaft, a thrust assembly, a supporting seat, a movable disc assembly and an auxiliary bearing, wherein one end of the crankshaft is connected with a movable vortex disc of a compressor through the movable disc assembly, the other end of the crankshaft is provided with the auxiliary bearing, the auxiliary bearing is arranged in the supporting seat, a limiting groove group or an annular thrust groove is formed in the other end of the crankshaft, an annular thrust groove or a limiting groove group is formed in the supporting seat, and the thrust assembly is supported between the limiting groove group and the annular thrust groove.
In another preferred embodiment, the limit groove set includes at least one limit groove, and the thrust assembly includes: and one end of each thrust piece is arranged in the limiting groove, and the other end of each thrust piece is arranged in the annular thrust groove in a rolling way.
In another preferred embodiment, the thrust member is provided in a spherical configuration.
In another preferred embodiment, the thrust assembly further comprises: and each two adjacent thrust pieces are connected through the retainer.
In another preferred embodiment, the number of the thrust pieces is three, and the retainer is arranged in a ring shape.
In a further preferred embodiment, the cage is provided with a mounting ring matching the outer contour of the thrust piece.
In another preferred embodiment, a first oil return hole is radially formed in the crankshaft, a second oil return hole is axially and penetratingly formed in the crankshaft, and the first oil return hole and the second oil return hole are communicated.
In another preferred embodiment, a first mounting groove is formed at one end of the movable scroll, which is close to the crankshaft, one end of the crankshaft and the movable disk assembly extend into the first mounting groove, a second mounting groove is formed at one end of the support base, which is close to the crankshaft, and the other end of the crankshaft and the auxiliary bearing extend into the second mounting groove.
In another preferred embodiment, a first high-pressure chamber is formed between the inner wall of the first mounting groove, one end of the crankshaft and the movable disk assembly, and a second high-pressure chamber is formed between the inner wall of the second mounting groove, the other end of the crankshaft and the sub-bearing.
In another preferred embodiment, the movable disk assembly includes: the movable disc bearing is arranged in the first mounting groove, the movable disc bearing is sleeved on the outer side of the swinging sleeve, and the swinging sleeve is sleeved on the outer side of one end of the crankshaft.
By adopting the technical scheme, the invention has the positive effects compared with the prior art that: by applying the invention, a thrust structure suitable for a compressor is provided, so that the friction coefficient of an end structure of a crankshaft subjected to axial thrust is reduced, and the lubrication effect is improved; the invention has simple structure, utilizes the end space of the crankshaft as much as possible and has lower cost.
Drawings
FIG. 1 is an overall schematic of a compressor thrust structure of the present invention;
FIG. 2 is a first embodiment of a thrust assembly installation of a compressor thrust structure of the present invention;
FIG. 3 is a second embodiment of a thrust assembly installation of a compressor thrust structure of the present invention;
fig. 4 is a third embodiment of a thrust assembly installation of a compressor thrust structure of the present invention.
In the accompanying drawings:
1. a crankshaft; 2. a thrust assembly; 3. a support base; 4. a movable disc assembly; 5. a sub-bearing; 6. a movable scroll; 7. a limit groove group; 8. an annular thrust groove; 9. a limit groove; 10. a thrust piece; 11. a retainer; 12. a mounting ring; 13. a first oil return hole; 14. a second oil return hole; 15. a first high pressure chamber; 16. a second high pressure chamber; 17. a movable disc bearing; 18. swinging the sleeve; 19. a main bearing; 20. an oil return inlet; 21. and a balance weight.
Detailed Description
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
As shown in fig. 1, there is shown a compressor thrust structure of a preferred embodiment, comprising: the novel anti-thrust device comprises a crankshaft 1, a thrust assembly 2, a supporting seat 3, a movable disc assembly 4 and an auxiliary bearing 5, wherein one end of the crankshaft 1 is connected with a movable vortex disc 6 of a compressor through the movable disc assembly 4, the auxiliary bearing 5 is installed at the other end of the crankshaft 1, the auxiliary bearing 5 is installed in the supporting seat 3, a limiting groove group 7 or an annular thrust groove 8 is formed at the other end of the crankshaft 1, an annular thrust groove 8 or a limiting groove group 7 is formed in the supporting seat 3, and the thrust assembly 2 is supported between the limiting groove group 7 and the annular thrust groove 8. Further, by providing the thrust module 2 moving along the annular thrust groove 8, the thrust module is supported on the crankshaft 1 with axial thrust and the support seat 3.
Further, as a preferred embodiment, the limiting groove set 7 includes at least one limiting groove 9, and the thrust assembly 2 includes: at least two thrust pieces 10, one end of each thrust piece 10 is installed in the limiting groove 9, and the other end of each thrust piece 10 is installed in the annular thrust groove 8 in a rolling mode. Further, the thrust member 10 moves in a rolling motion between the annular thrust groove 8 and the limit groove group 7 instead of simple sliding friction.
Further, as a preferred embodiment, the cross section of the limiting groove 9 is circular or annular; when the limit grooves 9 are circularly arranged, the number of the limit grooves 9 is at least two, and each thrust piece 10 is correspondingly arranged in one limit groove 9; when the limiting grooves 9 are annularly arranged, the number of the limiting grooves 9 is one, and a plurality of thrust pieces 10 are jointly arranged in the same limiting groove 9.
Further, as a preferred embodiment, the thrust member 10 is provided in a spherical configuration. Further, when the limit groove 9 is circularly arranged, the outer diameter of the spherical structure is the same as the inner diameter of the limit groove 9.
Further, as a preferred embodiment, the diameter of the spherical structure is smaller than the radius of the end of the crankshaft 1.
Further, as a preferred embodiment, the thrust assembly 2 further comprises: the retainer 11, each adjacent two of the thrust pieces 10 are connected by the retainer 11.
Further, as a preferred embodiment, the number of the thrust members 10 is three, and the retainer 11 is arranged in a ring shape. Further, the three thrust pieces 10 are uniformly arranged in the circumferential direction of the retainer 11.
Further, as a preferred embodiment, as shown in fig. 2, a first embodiment of the thrust assembly 2 of the present invention is installed, wherein three limiting grooves 9 with circular cross sections are disposed at the end of the crankshaft 1, and annular thrust grooves 8 with annular shapes are disposed inside the supporting seat 3.
Further, as a preferred embodiment, as shown in fig. 3, a second embodiment of the thrust assembly 2 of the present invention is installed, wherein three limiting grooves 9 with circular cross sections are disposed inside the supporting seat 3, and annular thrust grooves 8 with annular shapes are disposed at the end of the crankshaft 1.
Further, as a preferred embodiment, as shown in fig. 4, a third embodiment of the thrust module 2 of the present invention is provided, wherein an annular limiting groove 9 is provided at the end of the crankshaft 1 or the inside of the supporting seat 3, and an annular thrust groove 8 is provided at the inside of the supporting seat 3 or the end of the crankshaft 1.
Further, as a preferred embodiment, the number of thrust members 10 may be increased or decreased according to the axial thrust force of the crankshaft 1, so that the axial thrust force is reasonably shared and controlled.
Further, as a preferred embodiment, the retainer 11 is provided with a mounting ring 12 matching the outer contour of the thrust piece 10. Further, the thrust member 10 is rotatably retained within the mounting ring 12.
Further, as a preferred embodiment, a first oil return hole 13 is formed in the crankshaft 1 in the radial direction, a second oil return hole 14 is formed in the crankshaft 1 in the axial direction in a penetrating manner, and the first oil return hole 13 and the second oil return hole 14 are communicated.
Further, as a preferred embodiment, the second oil return hole 14 includes a first hole portion and a second hole portion which are disposed in order in the axial direction and are not coaxial.
Further, as a preferred embodiment, a first mounting groove is formed at one end of the movable scroll 6 close to the crankshaft 1, one end of the crankshaft 1 and the movable disk assembly 4 are arranged to extend into the first mounting groove, a second mounting groove is formed at one end of the supporting seat 3 close to the crankshaft 1, and the other end of the crankshaft 1 and the auxiliary bearing 5 are arranged to extend into the second mounting groove.
Further, as a preferred embodiment, a first high pressure chamber 15 is formed between the inner wall of the first mounting groove, one end of the crankshaft 1 and the movable disk assembly 4, and a second high pressure chamber 16 is formed between the inner wall of the second mounting groove, the other end of the crankshaft 1 and the sub-bearing 5.
Further, as a preferred embodiment, the movable disk assembly 4 includes: the movable disc bearing 17 and the swinging sleeve 18, the movable disc bearing 17 is arranged in the first mounting groove, the movable disc bearing 17 is sleeved on the outer side of the swinging sleeve 18, and the swinging sleeve 18 is sleeved on the outer side of one end of the crankshaft 1.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the embodiments and the protection scope of the present invention.
The present invention has the following embodiments based on the above description:
in a further embodiment of the present invention, further comprising: the balance weight 21 is provided with a step part at the end part of the crankshaft 1 close to the movable vortex disk 6, the balance weight 21 is sleeved at the step part of the crankshaft 1, and two ends of the balance weight 21 along the axial direction of the crankshaft 1 are respectively propped against the surfaces of the swinging sleeve 18 and the step part. Further, the arrangement of the counterweight 21 allows the axial force at the wobble sleeve 18 to be transmitted to the crankshaft 1 via the counterweight 21.
In a further embodiment of the present invention, further comprising: the main bearing 19 is sleeved on the crankshaft 1, an oil return inlet 20 is formed in the main bearing 19, and the oil return inlet 20 is communicated with the first oil return hole 13.
In a further embodiment of the invention, the rotor bearing 17, the main bearing 19 and the auxiliary bearing 5 are all plain bearings.
In a further embodiment of the invention, the oil film gap between the corresponding bearing and the crankshaft 1 or the swinging sleeve 18 on the inner side is arranged in a way of high-pressure oil inlet and low-pressure oil outlet.
Further, in the specific working process of the thrust structure of the compressor, the high-pressure return oil is directly guided to the oil return inlet 20 of the main bearing 19 by utilizing the high-pressure exhaust of the compressor, and is enabled to enter the second oil return hole 14 along the first oil return hole 13 to be supplied to the first high-pressure cavity 15 and the second high-pressure cavity 16 at two ends of the crankshaft 1, at the moment, the high pressure is formed in the first high-pressure cavity 15 and the second high-pressure cavity 16, and the high pressure is formed in the clearance inlets of the movable disc bearing 17, the main bearing 19 and the auxiliary bearing 5 corresponding to the crankshaft 1, and the low pressure is formed in the outlets of the clearance inlets, so that high-pressure differential pressure is formed at two sides of the corresponding clearance, and the efficient working of the sliding bearing is ensured. The high-pressure return oil entering the first high-pressure cavity 15 and the second high-pressure cavity 16 causes the crankshaft 1 to generate an axial thrust due to the difference of the stress areas of the corresponding structures at the two ends of the crankshaft 1, and the axial thrust causes the crankshaft 1 to be pushed to the supporting seat 3 so as to prevent the axial movement of the crankshaft 1; when the compressor is in operation, the crankshaft 1 starts to rotate, the thrust piece 10 rotates accordingly due to friction force, and lubricating oil is wound between the thrust piece 10 and the annular thrust groove 8 and between the thrust piece 10 and the limiting groove group 7, and at this time, the thrust assembly 2 is supported at the other end of the crankshaft 1, and the axial thrust force of the crankshaft 1 is distributed by the plurality of thrust pieces 10, and meanwhile, sufficient lubrication is realized.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A compressor thrust structure, comprising: the novel anti-thrust device comprises a crankshaft, a thrust assembly, a supporting seat, a movable disc assembly and an auxiliary bearing, wherein one end of the crankshaft is connected with a movable vortex disc of a compressor through the movable disc assembly, the other end of the crankshaft is provided with the auxiliary bearing, the auxiliary bearing is arranged in the supporting seat, a limiting groove group or an annular thrust groove is formed in the other end of the crankshaft, an annular thrust groove or a limiting groove group is formed in the supporting seat, and the thrust assembly is supported between the limiting groove group and the annular thrust groove.
2. The compressor thrust structure of claim 1, wherein the set of limiting slots includes at least one limiting slot, the thrust assembly comprising: and one end of each thrust piece is arranged in the limiting groove, and the other end of each thrust piece is arranged in the annular thrust groove in a rolling way.
3. The compressor thrust structure of claim 2, wherein the thrust member is provided in a spherical configuration.
4. The compressor thrust structure of claim 2, wherein the thrust assembly further comprises: and each two adjacent thrust pieces are connected through the retainer.
5. The compressor thrust structure of claim 4, wherein the number of thrust members is three and the retainer is annularly disposed.
6. The compressor thrust structure of claim 4, wherein said retainer is provided with a mounting ring that matches the outer contour of said thrust member.
7. The thrust structure of claim 1, wherein a first oil return hole is radially formed in the crankshaft, a second oil return hole is axially and penetratingly formed in the crankshaft, and the first oil return hole and the second oil return hole are communicated.
8. The compressor thrust structure of claim 1, wherein a first mounting groove is formed at an end of the orbiting scroll adjacent to the crankshaft, one end of the crankshaft and the orbiting scroll assembly extend into the first mounting groove, a second mounting groove is formed at an end of the support base adjacent to the crankshaft, and the other end of the crankshaft and the auxiliary bearing extend into the second mounting groove.
9. The compressor thrust structure of claim 8, wherein a first high pressure chamber is formed between an inner wall of the first mounting groove, one end of the crankshaft, and the movable disk assembly, and a second high pressure chamber is formed between an inner wall of the second mounting groove, the other end of the crankshaft, and the auxiliary bearing.
10. The compressor thrust structure of claim 8, wherein the movable disk assembly includes: the movable disc bearing is arranged in the first mounting groove, the movable disc bearing is sleeved on the outer side of the swinging sleeve, and the swinging sleeve is sleeved on the outer side of one end of the crankshaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311574712.XA CN117552954A (en) | 2023-11-23 | 2023-11-23 | Thrust structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311574712.XA CN117552954A (en) | 2023-11-23 | 2023-11-23 | Thrust structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117552954A true CN117552954A (en) | 2024-02-13 |
Family
ID=89810617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311574712.XA Pending CN117552954A (en) | 2023-11-23 | 2023-11-23 | Thrust structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552954A (en) |
-
2023
- 2023-11-23 CN CN202311574712.XA patent/CN117552954A/en active Pending
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