CN204436801U - Crankshaft group and compressor - Google Patents
Crankshaft group and compressor Download PDFInfo
- Publication number
- CN204436801U CN204436801U CN201520073390.5U CN201520073390U CN204436801U CN 204436801 U CN204436801 U CN 204436801U CN 201520073390 U CN201520073390 U CN 201520073390U CN 204436801 U CN204436801 U CN 204436801U
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- roller
- crankshaft
- compressor
- crankshaft group
- utility
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Abstract
The utility model provides a kind of crankshaft group and compressor.Crankshaft group comprises: crankshaft body; Roller, roller is eccentrically set on crankshaft body, and the outer margin contour of roller is cam profile, and the area that the cam profile of roller surrounds is less than the area of the circle determined by the major diameter of roller.The area surrounded due to the outer circumferential face of roller is less than the area of the circle determined by the major diameter of roller, thus compared with cylindrical roller of the prior art, roller in the utility model is the equal of formed excise a part of structure on the basis of original columniform roller after, thus make the volume of roller less, the space taken in the cylinder of compressor is less, effective compression volume in cylinder is increased, thus improves the air displacement of compressor.
Description
Technical field
The utility model relates to technical field of heat exchange equipment, in particular to a kind of crankshaft group and compressor.
Background technique
At present, the rotating part of rotor-type compressor comprises rotor, bent axle and roller three parts, and wherein, bent axle matches with roller, and forms compression chamber with cylinder, slide plate and upper lower flange.
The projection of outer circumferential face in the Transverse plane of bent axle of roller of the prior art is rounded, therefore, when volume one timing of the cylinder of compressor, the more effective compression volumes of compressor that will cause in the space that roller takies are less, thus cause the air displacement of compressor to be difficult to promote.
Model utility content
Main purpose of the present utility model is to provide a kind of crankshaft group and compressor, to solve the problem that effective compression volume is little, air displacement is little of compressor of the prior art.
To achieve these goals, according to an aspect of the present utility model, provide a kind of crankshaft group, comprising: crankshaft body; Roller, roller is eccentrically set on crankshaft body, and the outer margin contour of roller is cam profile, and the area that the cam profile of roller surrounds is less than the area of the circle determined by the major diameter of roller.
Further, the cambered surface that the outer circumferential face of roller is arranged continuously by multistage forms, and the radian of at least two sections of cambered surfaces in multistage cambered surface is not identical.
Further, the projection of multistage cambered surface in the Transverse plane of crankshaft body is that cycloidal or acceleration are linear.
Further, crankshaft body and roller one-body molded.
Further, the surface of the first end towards crankshaft body of roller has the first anti-attrition recess.
Further, the surface of second end towards crankshaft body of roller has the second anti-attrition recess.
Further, roller is along an axial plane Central Symmetry of crankshaft body.
According to another aspect of the present utility model, provide a kind of compressor, comprise crankshaft group, crankshaft group is above-mentioned crankshaft group.
Further, compressor also comprises slide plate, and the end face towards crankshaft group one end of slide plate is arc surfaced.
Further, compressor also comprises rolling post, and the end face towards crankshaft group one end of slide plate has mounting groove, and the bearing of trend of mounting groove is consistent with the bearing of trend of crankshaft group, rolling post is arranged in mounting groove pivotly, and the outer circumferential face of rolling post is given prominence to by the opening end of mounting groove.
Application the technical solution of the utility model, roller is eccentrically set on crankshaft body, and the outer margin contour of roller is cam profile, and the area that the cam profile of roller surrounds is less than the area of the circle determined by the major diameter of roller.The area surrounded due to the outer circumferential face of roller is less than the area of the circle determined by the major diameter of roller, thus compared with cylindrical roller of the prior art, roller in the utility model is the equal of formed excise a part of structure on the basis of original columniform roller after, thus make the volume of roller less, the space taken in the cylinder of compressor is less, effective compression volume in cylinder is increased, thus improves the air displacement of compressor.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the structural representation of the crankshaft group in the utility model;
Fig. 2 shows the left view of Fig. 1; And
Fig. 3 shows the structural representation of the slide plate in the utility model.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, crankshaft body; 20, roller; 21, cambered surface; 22, the first anti-attrition recess; 23, the second anti-attrition recess; 30, slide plate; 40, rolling post.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the utility model in detail in conjunction with the embodiments.
In order to solve the problem that effective compression volume is little, air displacement is little of compressor of the prior art, the utility model provides a kind of compressor and is arranged on the crankshaft group in this compressor.
As shown in Figure 1 to Figure 3, crankshaft group comprises crankshaft body 10 and roller 20, roller 20 is eccentrically set on crankshaft body 10, and the outer margin contour of roller 20 is cam profile, and the area that the cam profile of roller 20 surrounds is less than the area of the circle determined by the major diameter of roller 20.
The area surrounded due to the outer circumferential face of roller 20 is less than the area of the circle determined by the major diameter of roller 20, thus compared with cylindrical roller of the prior art, roller 20 in the utility model is the equal of formed excise a part of structure on the basis of original columniform roller after, thus make the volume of roller 20 less, the space taken in the cylinder of compressor is less, effective compression volume in cylinder is increased, thus improves the air displacement of compressor.
It should be noted that, the major diameter of roller 20: first, with the fulcrum distance point farthest of roller 20 on the outer margin contour determining roller 20, two the intersection point determined straight lines of line on the outer margin contour of this roller 20 of this solstics and fulcrum are major diameter.The circle that the major diameter of roller 20 is determined: will the central point of above-mentioned major diameter be determined, with this central point for circle, and with the circle that the half length of major diameter is determined for radius.
In preferred implementation as shown in Figure 1, the cambered surface 21 that the outer circumferential face of roller 20 is arranged continuously by multistage forms, and the radian of at least two sections of cambered surfaces 21 in multistage cambered surface 21 is not identical.Because the outer circumferential face of roller 20 is made up of the multistage cambered surface 21 that radian is different, thus compared with cylindrical roller of the prior art, the volume of the roller 20 in the utility model is less, the space taken in the cylinder of compressor is less, effective compression volume in cylinder is increased, thus improves the air displacement of compressor.
In order to improve the exercise performance of crankshaft group, the crankshaft body 10 in the utility model is one-body molded with roller 20.
Certainly, crankshaft body 10 and roller 20 also can be that split is arranged.
The projection of multistage cambered surface 21 in the utility model in the Transverse plane of crankshaft body 10 is that cycloidal or acceleration are linear.Because the projection of multistage cambered surface 21 in the Transverse plane of crankshaft body 10 is that cycloidal or acceleration are linear, thus roller 20 can improve the dynamic performance of kinematic pair, avoids rigid impulse and soft impulse.
In the preferred embodiment illustrated in fig. 1, the outer circumferential face of roller 20 is made up of three sections of cambered surfaces 21, the projection of first paragraph cambered surface 21 in the Transverse plane of crankshaft body 10 is cycloidal, and second segment and the 3rd section of projection of cambered surface 21 in the Transverse plane of crankshaft body 10 are that acceleration is linear.
In order to ensure the motion credibility of crankshaft group, the roller 20 in the utility model is along an axial plane Central Symmetry (please refer to Fig. 1) of crankshaft body 10.Because roller 20 is along an axial plane Central Symmetry of crankshaft body 10, thus makes roller 20 have the uniform feature of mass distribution along symmetry plane, thus ensure that the overall work reliability of compressor.
The surface of the first end towards crankshaft body 10 of the roller 20 in the utility model has the first anti-attrition recess 22 (please refer to Fig. 1).Owing to being provided with the first anti-attrition recess 22 in the end towards upper flange of roller 20, thus decrease the area of contact of roller 20 and upper flange, thus effectively avoid roller 20 and upper flange contact friction, thus improve the exercise performance of crankshaft group.
As shown in Figure 1, identical with the principle of the first anti-attrition recess 22, the surface of second end towards crankshaft body 10 of roller 20 has the second anti-attrition recess 23.Owing to being provided with the second anti-attrition recess 23 in the end towards lower flange of roller 20, thus decrease the area of contact of roller 20 and lower flange, thus effectively avoid roller 20 and lower flange contact friction, thus improve the exercise performance of crankshaft group.
Preferably, the first anti-attrition recess 22 overlaps with the projection of the second anti-attrition recess 23 in the Transverse plane of crankshaft body 10.Because the first anti-attrition recess 22 overlaps with the projection of the second anti-attrition recess 23 in the Transverse plane of crankshaft body 10, thus make the mass distribution of roller 20 even, thus effectively avoid the first anti-attrition recess 22 and the second anti-attrition recess 23 to affect the rotational stability of roller 20, and then ensure the operation stability of compressor.
Compressor in the utility model also comprises slide plate 30, and the end face towards crankshaft group one end of slide plate 30 is arc surfaced (please refer to Fig. 1).The end face towards crankshaft group one end due to slide plate 30 is arc surfaced, thus when slide plate 30 contact with roller 20, move time have that impact force is little, the feature of Windsor, thus ensure that the functional reliability of compressor, extend the working life of slide plate 30, roller 20.
In preferred implementation as shown in Figure 3, compressor also comprises rolling post 40, the end face towards crankshaft group one end of slide plate 30 has mounting groove, the bearing of trend of mounting groove is consistent with the bearing of trend of crankshaft group, rolling post 40 is arranged in mounting groove pivotly, and the outer circumferential face of rolling post 40 is given prominence to by the opening end of mounting groove.Owing to being provided with projecting rolling post 40, thus when slide plate 30 and roller 20 relative movement, rolling post rotates along its axis, thus makes sliding friction become rolling friction and improve the motion credibility of slide plate 30, reduce impact force when contacting with roller 20, optimize the performance of slide plate 30.
Compressor in the utility model has following feature:
1. same compressor volume, same electric machine frequency significantly can improve the air displacement in the compressor unit time;
2. same compressor volume, compressor can be issued to same air displacement requirement at lower electric machine frequency;
3. same compressor frequency, compressor can realize same air displacement requirement when volume is less;
4. same air displacement requirement, compressor can run well under smaller size smaller, lower frequency.
As can be seen from the above description, the utility model the above embodiments achieve following technique effect:
1. the roller 20 in the utility model can increase the effective compression volume (doubling left and right) in compressor, increases the air displacement of compressor;
2. the compressor in the utility model has the feature of miniaturization, low frequency, flattening;
3. the assembly technology flow process of the compressor in the utility model is simpler.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a crankshaft group, is characterized in that, comprising:
Crankshaft body (10);
Roller (20), described roller (20) is eccentrically set on described crankshaft body (10), the outer margin contour of described roller (20) is cam profile, and the area that the cam profile of described roller (20) surrounds is less than the area of the circle determined by the major diameter of described roller (20).
2. crankshaft group according to claim 1, it is characterized in that, the cambered surface (21) that the outer circumferential face of described roller (20) is arranged continuously by multistage forms, and the radian of at least two sections of described cambered surfaces (21) in cambered surface described in multistage (21) is not identical.
3. crankshaft group according to claim 2, is characterized in that, the projection of cambered surface described in multistage (21) in the Transverse plane of described crankshaft body (10) is that cycloidal or acceleration are linear.
4. crankshaft group according to claim 1, is characterized in that, described crankshaft body (10) is one-body molded with described roller (20).
5. crankshaft group according to claim 1, is characterized in that, the surface of the first end towards described crankshaft body (10) of described roller (20) has the first anti-attrition recess (22).
6. crankshaft group according to claim 5, is characterized in that, the surface of second end towards described crankshaft body (10) of described roller (20) has the second anti-attrition recess (23).
7. crankshaft group according to any one of claim 1 to 6, is characterized in that, described roller (20) is along an axial plane Central Symmetry of described crankshaft body (10).
8. a compressor, comprises crankshaft group, it is characterized in that, described crankshaft group is the crankshaft group according to any one of claim 1 to 7.
9. compressor according to claim 8, is characterized in that, described compressor also comprises slide plate (30), and the end face towards described crankshaft group one end of described slide plate (30) is arc surfaced.
10. compressor according to claim 9, it is characterized in that, described compressor also comprises rolling post (40), the end face towards described crankshaft group one end of described slide plate (30) has mounting groove, the bearing of trend of described mounting groove is consistent with the bearing of trend of described crankshaft group, described rolling post (40) is arranged in described mounting groove pivotly, and the outer circumferential face of described rolling post (40) is given prominence to by the opening end of described mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073390.5U CN204436801U (en) | 2015-01-30 | 2015-01-30 | Crankshaft group and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520073390.5U CN204436801U (en) | 2015-01-30 | 2015-01-30 | Crankshaft group and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436801U true CN204436801U (en) | 2015-07-01 |
Family
ID=53604674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520073390.5U Expired - Fee Related CN204436801U (en) | 2015-01-30 | 2015-01-30 | Crankshaft group and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916049A (en) * | 2018-08-21 | 2018-11-30 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
-
2015
- 2015-01-30 CN CN201520073390.5U patent/CN204436801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916049A (en) * | 2018-08-21 | 2018-11-30 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
| CN108916049B (en) * | 2018-08-21 | 2024-01-19 | 珠海凌达压缩机有限公司 | Pump body structure and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20210130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |