CN216714715U - Crankshaft, pump body, compressor and refrigerating system - Google Patents
Crankshaft, pump body, compressor and refrigerating system Download PDFInfo
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- CN216714715U CN216714715U CN202220385062.9U CN202220385062U CN216714715U CN 216714715 U CN216714715 U CN 216714715U CN 202220385062 U CN202220385062 U CN 202220385062U CN 216714715 U CN216714715 U CN 216714715U
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- 230000001050 lubricating effect Effects 0.000 claims description 40
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 10
- 238000007906 compression Methods 0.000 abstract description 10
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a crankshaft, a pump body, a compressor and a refrigerating system, wherein the crankshaft comprises a first central shaft, a second central shaft and an eccentric shaft, a first disc is arranged at one end of the first central shaft close to the second central shaft, a second disc is arranged at one end of the second central shaft close to the first central shaft, the eccentric shaft is arranged between the first disc and the second disc, the first central shaft, the first disc, the second central shaft and the second disc are coaxially arranged around the first axis, a second axis of the eccentric shaft is parallel to the first axis, L > | D1-D2|, 0.8 × D2 ≤ D1 ≤ 2 × D2, and 0.5 × D3 ≤ D1 ≤ 0.9 × D3 or 0.5 × D4 ≤ D1 ≤ 0.9 × D4. The crankshaft can increase the eccentricity, reduce the diameter of the eccentric shaft, improve the fatigue resistance and prolong the service life, thereby effectively increasing the volume of compressed gas, shortening the arm of force of compression work, reducing the power consumption of the compressed gas, saving energy and protecting environment.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to a crankshaft, a pump body with the crankshaft, a compressor with the pump body and a refrigerating system with the compressor.
Background
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and is a heart of a refrigeration system.
In the rolling rotor compressor, the roller rolls along the inside of the cylinder under the drive of the eccentric shaft of the crankshaft through the eccentric integral design of the crankshaft, a crescent working cavity is formed between the roller and the cylinder, the end part of the sliding sheet is in close contact with the roller under the action of spring force, the crescent working cavity is divided into two parts, a suction cavity communicated with the suction port and a compression cavity at the other side. When the compressor works normally, the refrigerant enters the air suction cavity from the air suction port to be compressed and then is exhausted.
However, the diameter of the eccentric shaft of the existing crankshaft is large, and the eccentricity of the eccentric shaft is small, so that the volume of effective compressed gas between the eccentric shaft and the cylinder is reduced, the distance between a gas compression position and an axis is long, the acting force arm is large, the compressed gas acts more, and the power consumption of the compressor is high.
Disclosure of Invention
In order to achieve the first object of the present invention, the present invention provides a crankshaft capable of increasing the eccentricity, reducing the diameter of an eccentric shaft, improving the fatigue resistance, and prolonging the service life, thereby effectively increasing the volume of compressed gas, shortening the arm of force of compression work, reducing the power consumption of the compressed gas, saving energy, and protecting environment.
In order to achieve the second object of the present invention, the present invention provides a pump body having the above-described crankshaft.
In order to achieve the third object of the present invention, the present invention provides a compressor having the pump body.
In order to achieve the fourth object of the present invention, the present invention provides a refrigeration system having the above-mentioned compressor.
In order to achieve the first object of the utility model, the utility model provides a crankshaft, which comprises a first central shaft, a second central shaft and an eccentric shaft, wherein a first disc is arranged at one end of the first central shaft close to the second central shaft, a second disc is arranged at one end of the second central shaft close to the first central shaft, the eccentric shaft is arranged between the first disc and the second disc, the first central shaft, the first disc, the second central shaft and the second disc are coaxially arranged around a first axis, a second axis of the eccentric shaft is arranged in parallel with the first axis, L > | D1-D2|, 0.8 × D2 ≦ D1 ≦ 2 × D2, and 0.5 XD 3 is not less than D1 not less than 0.9 XD 3 or 0.5 XD 4 is not less than D1 not less than 0.9 XD 4, where L is the eccentricity between the second axis and the first axis, D1 is the diameter of the eccentric shaft, D2 is the diameter of the first central shaft, D3 is the diameter of the first disk, and D4 is the diameter of the second disk.
In the above scheme, the crankshaft of the present invention is mounted to a pump body, the pump body further includes an air cylinder, a sliding vane, an upper flange and a lower flange, the air cylinder sleeve is disposed on a first disc, an eccentric shaft and a second disc of the crankshaft, the upper flange is sleeved on a first central shaft of the crankshaft and abuts against an axial first end face of the air cylinder, one end of the first central shaft of the crankshaft, which is far away from the eccentric shaft, is abutted with a motor, and the lower flange is sleeved on a second central shaft of the crankshaft and abuts against an axial second end face of the air cylinder. The cylinder is provided with a sliding sheet groove, the sliding sheet slides along the sliding sheet groove, one end of the sliding sheet is pressed against an eccentric shaft of the crankshaft under the action of elastic force of an elastic piece, the first disc and the second disc are in rolling fit with the peripheral wall of an inner cavity of the cylinder, a crescent working cavity is formed between the eccentric shaft of the crankshaft and the inner cavity of the cylinder, one end of the sliding sheet is in close contact with the eccentric shaft under the action of the elastic force, the crescent working cavity is divided into two parts, an air suction cavity communicated with an air suction port and a compression cavity on the other side. When the pump body of the compressor normally works, a refrigerant enters the air suction cavity from the air suction port to be compressed, and then high-temperature and high-pressure refrigerant gas is discharged to provide power for the refrigeration cycle. Therefore, the pump body with the crankshaft does not need to be sleeved with a roller on the eccentric shaft, so that a roller structure is omitted, the number of parts of the pump body with the crankshaft is reduced, the assembly complexity of the pump body is reduced, the production process is simple, the production efficiency is improved, and the production cost is reduced. Meanwhile, the diameter D1 and the eccentricity L of the eccentric shaft are optimally designed by the crankshaft, namely L > | D1-D2|, 0.8 xD 2 is not less than D1 and not more than 2 xD 2, 0.5 xD 3 is not less than D1 and not more than 0.9 xD 3 or 0.5 xD 4 is not less than D1 and not more than 0.9 xD 4, L is the eccentricity between the second axis 17 and the first axis 16, D1 is the diameter of the eccentric shaft, D2 is the diameter of the first central shaft, D3 is the diameter of the first disc, and D4 is the diameter of the second disc, so that the eccentricity L can be increased and the diameter D1 of the eccentric shaft is reduced, the volume of compressed gas in the compression cavities of the eccentric shaft and the cylinder can be effectively increased, the work done by compression is shortened, the power consumption of the compressed gas of the eccentric shaft is reduced, energy is saved, and the environment is protected. The crankshaft is reasonable and simple in structure, low in production cost and convenient to install, the first disc and the second disc can greatly improve the structural connection strength between the first central shaft and the eccentric shaft and between the second central shaft and the eccentric shaft, the fatigue resistance of the eccentric shaft during working is further improved, the balance and stability of the crankshaft during working are effectively improved, and the service life of the crankshaft is prolonged.
Further, the length of the first central axis in the first axial direction is larger than the length of the second central axis in the first axial direction.
Further, the diameter of the first disk is either larger or smaller than the diameter of the second disk.
Further, the outer peripheral wall of the eccentric shaft away from the first axis is flush with the outer peripheral wall of the first disc in the direction of the first axis; and/or the peripheral wall of the eccentric shaft away from the first axis is flush with the peripheral wall of the second disc in the direction of the first axis.
The further scheme is that a spiral guide groove is formed in the outer peripheral wall of the eccentric shaft and extends spirally along the first axis.
A first central shaft penetrates through the first disc along a first axis and is provided with a first lubricating straight hole, the first end of the first lubricating straight hole extends to the first disc along the first axis, the outer peripheral wall of the eccentric shaft is provided with a first lubricating inclined hole, and the first end of the first lubricating inclined hole extends to the first disc and is communicated with the first end of the first lubricating straight hole; and/or the second central shaft penetrates through the second central shaft along the first axis to be provided with a second lubricating straight hole, the first end of the second lubricating straight hole extends to the second disc along the first axis, the outer peripheral wall of the eccentric shaft is provided with a second lubricating inclined hole, and the first end of the second lubricating inclined hole extends to the second disc and is communicated with the first end of the second lubricating straight hole.
The crankshaft is provided with a third lubricating inclined hole which sequentially penetrates through the first central shaft, the first disc and the eccentric shaft; and/or the crankshaft is provided with a fourth lubricating inclined hole which sequentially penetrates through the second central shaft, the second disc and the eccentric shaft.
In order to achieve the second object of the present invention, the present invention provides a pump body, which includes a crankshaft, wherein the crankshaft is the crankshaft.
In order to achieve the third object of the present invention, the present invention provides a compressor, which includes a pump body, wherein the pump body is the above pump body.
In order to achieve the fourth object of the present invention, the present invention provides a refrigeration system, which includes a compressor, wherein the compressor is the above-mentioned compressor.
Drawings
FIG. 1 is a front view of a first embodiment of a crankshaft of the present invention.
FIG. 2 is a top view of a first embodiment of a crankshaft of the present invention.
FIG. 3 is a cross-sectional view of a first embodiment of a crankshaft of the present invention mounted to a pump body.
FIG. 4 is a top view of a first embodiment of a crankshaft of the present invention mounted to a pump body.
Fig. 5 is a structural view of an eccentric shaft in a second embodiment of a crankshaft of the present invention.
FIG. 6 is a front view of a third embodiment of a crankshaft of the present invention.
FIG. 7 is a front elevational view, from a first perspective, of a fourth embodiment of a crankshaft of the present invention.
FIG. 8 is a front view from a second perspective of a fourth embodiment of a crankshaft of the present invention.
The utility model is further explained with reference to the drawings and the embodiments.
Detailed Description
First embodiment of crankshaft:
referring to fig. 1 to 4, the present embodiment discloses a crankshaft 1 including a first center shaft 11, a second center shaft 15, and an eccentric shaft 13, wherein a first disc 12 is disposed at an end of the first center shaft 11 adjacent to the second center shaft 15, a second disc 14 is disposed at an end of the second center shaft 15 adjacent to the first center shaft 11, and the eccentric shaft 13 is disposed between the first disc 12 and the second disc 14. The first central shaft 11, the first disc 12, the second central shaft 15 and the second disc 14 are coaxially arranged with respect to a first axis 16, and a second axis 17 of the eccentric shaft 13 is arranged in parallel with the first axis 16. L > | D1-D2|, 0.8 × D2 is not less than D1 is not less than 2 × D2, and 0.5 × D3 is not less than D1 is not less than 0.9 × D3 or 0.5 × D4 is not less than D1 is not less than 0.9 × D4, wherein L is the eccentric distance between the second axis 17 and the first axis 16, D1 is the diameter of the eccentric shaft 13, D2 is the diameter of the first central shaft 11, D3 is the diameter of the first disk 12, and D4 is the diameter of the second disk 14.
In this embodiment, the crankshaft 1 is mounted to the pump body 2, the pump body 2 further includes a cylinder 21, a sliding vane 24, an upper flange 22 and a lower flange 23, the cylinder 21 is sleeved on the first disk 12, the eccentric shaft 13 and the second disk 14 of the crankshaft 1, the upper flange 22 is sleeved on the first central shaft 11 of the crankshaft 1 and abuts against an axial first end surface of the cylinder 21, one end of the first central shaft 11 of the crankshaft 1, which is far away from the eccentric shaft 13, is abutted to the motor, and the lower flange 23 is sleeved on the second central shaft 15 of the crankshaft 1 and abuts against an axial second end surface of the cylinder 21. The cylinder 21 is provided with a slide sheet groove, the slide sheet 24 slides along the slide sheet groove, one end of the slide sheet 24 is pressed against the eccentric shaft 13 of the crankshaft 1 under the action of elastic force of an elastic piece, the first disk 12 and the second disk 14 are in rolling fit with the peripheral wall of the inner cavity of the cylinder 21, a crescent working cavity is formed between the eccentric shaft 13 of the crankshaft 1 and the inner cavity of the cylinder 21, one end of the slide sheet 24 is in tight contact with the eccentric shaft 13 under the action of elastic force, the crescent working cavity is divided into two parts, a suction cavity communicated with the suction port and a compression cavity 25 at the other side. When the compressor pump body 2 works normally, the refrigerant enters the air suction cavity from the air suction port to be compressed, and then high-temperature and high-pressure refrigerant gas is discharged to provide power for the refrigeration cycle. Therefore, the pump body 2 with the crankshaft 1 of the embodiment does not need to be sleeved with a roller on the eccentric shaft 13, so that a roller structure is omitted, the number of parts of the pump body 2 with the crankshaft 1 of the embodiment is reduced, the assembly complexity of the pump body 2 is reduced, the production process is simple, the production efficiency is improved, and the production cost is reduced. Meanwhile, the crankshaft 1 of the embodiment optimally designs the diameter D1 and the eccentricity L of the eccentric shaft 13, that is, L > | D1-D2|, 0.8 × D2 is not less than D1 is not less than 2 × D2, and 0.5 × D3 is not less than D1 is not less than 0.9 × D3 or 0.5 × D4 is not less than D1 is not less than 0.9 × D4, where L is the eccentricity between the second axis 17 and the first axis 16, D1 is the diameter of the eccentric shaft 13, D2 is the diameter of the first central shaft 11, D3 is the diameter of the first disk 12, and D4 is the diameter of the second disk 14, the eccentricity L can be increased and the diameter D1 of the eccentric shaft 13 is reduced, so that the volumes of the compressed gas in the compression cavities 25 of the eccentric shaft 13 and the cylinder 21 can be effectively increased, and the arm of the compression work can be shortened, so that the power consumption of the compressed gas of the eccentric shaft 13 is reduced, energy is saved and the environment is protected. Moreover, the crankshaft 1 of the embodiment has the advantages of reasonable and simple structure, low production cost and convenience in installation, the structural connection strength between the first central shaft 11 and the eccentric shaft 13 and the structural connection strength between the second central shaft 15 and the eccentric shaft 13 can be greatly improved by the aid of the first disc 12 and the second disc 14, the fatigue resistance of the eccentric shaft 13 during working is further improved, the balance and stability of the crankshaft 1 during working are effectively improved, and the service life of the crankshaft 1 is prolonged.
In order to further improve the operational balance and stability of the crankshaft 1, the length of the first center shaft 11 in the direction of the first axis 16 is larger than the length of the second center shaft 15 in the direction of the first axis 16; the diameter D3 of the first disk 12 is equal to the diameter D4 of the second disk 14, or the diameter D3 of the first disk 12 is greater than or less than the diameter D4 of the second disk 14; the outer peripheral wall of the eccentric shaft 13 remote from the first axis 16 is flush with the outer peripheral wall of the first disc 12 in the direction of the first axis 16, and the outer peripheral wall of the eccentric shaft 13 remote from the first axis 16 is also flush with the outer peripheral wall of the second disc 14 in the direction of the first axis 16.
Second embodiment of crankshaft:
as an explanation of the second embodiment of the crankshaft of the present invention, only the differences from the first embodiment of the crankshaft will be explained below.
Referring to fig. 5, the spiral guide groove 3 is formed in the outer peripheral wall of the eccentric shaft 13 of the crankshaft 1, and the spiral guide groove 3 extends spirally along the first axis 16, so that the mass of the eccentric shaft 13 body of the crankshaft 1 is reduced, the inertia force of the eccentric shaft 13 body is effectively reduced, and the service life of the crankshaft 1 is effectively prolonged.
Third embodiment of crankshaft:
as an explanation of the third embodiment of the crankshaft of the present invention, only the differences from the first embodiment of the crankshaft will be explained below.
Referring to fig. 6, in the present embodiment, a first central shaft 11 of the crankshaft 1 is provided with a first lubricating straight hole 4 penetrating along a first axis 16, a first end of the first lubricating straight hole 4 extends to a first disc 12 along the first axis 16, a first lubricating inclined hole 5 is provided on an outer peripheral wall of an eccentric shaft 13, and a first end of the first lubricating inclined hole 5 extends to the first disc 12 and is communicated with a first end of the first lubricating straight hole 4; and/or, in the embodiment, the second central shaft 15 of the crankshaft 1 is provided with a second lubricating straight hole 6 in a penetrating manner along the first axis 16, a first end of the second lubricating straight hole 6 extends to the second disc 14 along the first axis 16, the outer peripheral wall of the eccentric shaft 13 is provided with a second lubricating inclined hole 7, and a first end of the second lubricating inclined hole 7 extends to the second disc 14 and is communicated with a first end of the second lubricating straight hole 6.
The first lubricated straight hole 4 of this embodiment, the lubricated straight hole 6 of second, the lubricated inclined hole 5 of first and the lubricated inclined hole 7 of second all can supply lubricating oil to pass through for this embodiment bent axle 1 is lubricated effectual when rotating the during operation, thereby reduces wearing and tearing, improves the life of this embodiment bent axle 1.
Crankshaft fourth embodiment:
as an explanation of the fourth embodiment of the crankshaft of the present invention, only the differences from the first embodiment of the crankshaft 1 will be explained below.
Referring to fig. 7 and 8, the crankshaft 1 of the present embodiment is provided with a third oblique lubricating hole 8, and the third oblique lubricating hole 8 sequentially penetrates through the first central shaft 11, the first disc 12 and the eccentric shaft 13; and/or, the crankshaft 1 of the embodiment is provided with a fourth inclined lubricating hole 9, and the fourth inclined lubricating hole 9 sequentially penetrates through the second central shaft 15, the second disc 14 and the eccentric shaft 13.
Lubricated inclined hole 8 of this embodiment third and the lubricated inclined hole 9 of fourth all can supply lubricating oil to pass through for this embodiment bent axle 1 is lubricated effectual when rotating the work, thereby reduces wearing and tearing, improves this embodiment bent axle 1's life.
The above embodiments are merely preferred examples of the present invention, and not intended to limit the scope of the utility model, so that equivalent changes or modifications made based on the structure, characteristics and principles of the utility model as claimed should be included in the claims of the present invention.
Claims (10)
1. The crankshaft comprises a first central shaft, a second central shaft and an eccentric shaft, wherein a first disc is arranged at one end, close to the second central shaft, of the first central shaft, a second disc is arranged at one end, close to the first central shaft, of the second central shaft, and the eccentric shaft is arranged between the first disc and the second disc;
the first central shaft, the first disk, the second central shaft and the second disk are coaxially arranged about a first axis, a second axis of the eccentric shaft is arranged in parallel with the first axis, characterized in that:
l > | D1-D2|, 0.8 × D2 is not less than D1 is not less than 2 × D2; and is
D1 is more than or equal to 0.5 multiplied by D3 and less than or equal to 0.9 multiplied by D3 or D1 is more than or equal to 0.5 multiplied by D4 and less than or equal to 0.9 multiplied by D4;
wherein L is the eccentricity between the second axis and the first axis, D1 is the diameter of the eccentric shaft, D2 is the diameter of the first central shaft, D3 is the diameter of the first disk, and D4 is the diameter of the second disk.
2. The crankshaft of claim 1, wherein:
the length of the first center axis in the first axis direction is greater than the length of the second center axis in the first axis direction.
3. The crankshaft of claim 1, wherein:
the diameter of the first disk is equal to or larger than or smaller than the diameter of the second disk.
4. The crankshaft of claim 1, wherein:
the outer peripheral wall of the eccentric shaft away from the first axis is flush with the outer peripheral wall of the first disc in the first axis direction;
and/or the peripheral wall of the eccentric shaft away from the first axis is flush with the peripheral wall of the second disc in the direction of the first axis.
5. The crankshaft of claim 1, wherein:
the outer peripheral wall of the eccentric shaft is provided with a spiral guide groove, and the spiral guide groove extends spirally along the first axis.
6. A crankshaft according to any one of claims 1 to 5, wherein:
the first central shaft is provided with a first lubricating straight hole in a penetrating mode along the first axis, the first end of the first lubricating straight hole extends to the first disc along the first axis, the outer peripheral wall of the eccentric shaft is provided with a first lubricating inclined hole, and the first end of the first lubricating inclined hole extends to the first disc and is communicated with the first end of the first lubricating straight hole;
and/or the second central shaft is provided with a second lubricating straight hole in a penetrating manner along the first axis, the first end of the second lubricating straight hole extends to the second disc along the first axis, the outer peripheral wall of the eccentric shaft is provided with a second lubricating inclined hole, and the first end of the second lubricating inclined hole extends to the second disc and is communicated with the first end of the second lubricating straight hole.
7. A crankshaft according to any one of claims 1 to 5, wherein:
the crankshaft is provided with a third lubricating inclined hole, and the third lubricating inclined hole sequentially penetrates through the first central shaft, the first disc and the eccentric shaft;
and/or a fourth lubricating inclined hole is formed in the crankshaft, and the fourth lubricating inclined hole penetrates through the second central shaft, the second disc and the eccentric shaft in sequence.
8. The pump body, including the bent axle, its characterized in that:
the crankshaft is as defined in any one of claims 1 to 7.
9. Compressor, including the pump body, its characterized in that:
the pump body according to claim 8.
10. Refrigerating system, including the compressor, its characterized in that:
the compressor is the compressor of claim 9 above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385062.9U CN216714715U (en) | 2022-02-23 | 2022-02-23 | Crankshaft, pump body, compressor and refrigerating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220385062.9U CN216714715U (en) | 2022-02-23 | 2022-02-23 | Crankshaft, pump body, compressor and refrigerating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216714715U true CN216714715U (en) | 2022-06-10 |
Family
ID=81875703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220385062.9U Active CN216714715U (en) | 2022-02-23 | 2022-02-23 | Crankshaft, pump body, compressor and refrigerating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216714715U (en) |
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2022
- 2022-02-23 CN CN202220385062.9U patent/CN216714715U/en active Active
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