CN116771875A - Refrigerator transmission assembly and rotary Stirling refrigerator - Google Patents
Refrigerator transmission assembly and rotary Stirling refrigerator Download PDFInfo
- Publication number
- CN116771875A CN116771875A CN202310851965.0A CN202310851965A CN116771875A CN 116771875 A CN116771875 A CN 116771875A CN 202310851965 A CN202310851965 A CN 202310851965A CN 116771875 A CN116771875 A CN 116771875A
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- connecting rod
- compression
- expansion
- refrigerator
- transmission
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 81
- 230000006835 compression Effects 0.000 claims abstract description 92
- 238000007906 compression Methods 0.000 claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000013461 design Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005057 refrigeration Methods 0.000 abstract description 6
- 238000005299 abrasion Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
- F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
- F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/06—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point using expanders
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Compressor (AREA)
Abstract
The application discloses a refrigerator transmission assembly and a rotary Stirling refrigerator, and relates to the technical field of refrigeration equipment, wherein the refrigerator transmission assembly comprises a transmission crankshaft, a compression connecting rod and an expansion connecting rod; the compression connecting rods and the expansion connecting rods are circumferentially distributed around the transmission crankshaft; one end of the compression connecting rod is connected with a compression piston of the compression mechanism in a non-relative motion way, and the other end of the compression connecting rod is in line contact with the peripheral surface of the transmission crankshaft; one end of the expansion connecting rod is connected with an expansion piston of the expansion mechanism in a non-relative motion way, and the other end of the expansion connecting rod is in line contact with the peripheral surface of the transmission crankshaft; the transmission crankshaft is used for driving the compression connecting rod and the expansion connecting rod to reciprocate when the transmission crankshaft rotates. The design realizes at least four reduction of the bearings, reduces the production cost, improves the production efficiency, well solves the problem of limiting the service life of the refrigerator due to the service life of the bearings, and effectively improves the service life of the refrigerator.
Description
Technical Field
The application relates to the technical field of refrigeration equipment, in particular to a transmission assembly of a refrigerator and a rotary Stirling refrigerator.
Background
The Stirling cycle refrigerator is a regenerative gas refrigerator, and has the important structural characteristics that a valve is not used for matching between a compressor and an expander, the compressor and the expander operate at the same high efficiency, the change rule of the pressure in the system is determined by the associated influence of various parameters inside, and the refrigerator has the advantages of compact structure and high efficiency and is widely applied to the fields of high-temperature superconducting and infrared detection.
The Stirling refrigerator is a refrigerator which integrates a compression part (comprising a compression cylinder, a compression piston and a cooler) and an expansion refrigeration part (comprising an expansion cylinder, an ejector, a heat regenerator and a cold heat exchanger) and is coupled through a crankshaft or other power mechanisms to operate independently. There is an important distinction between compression pistons and ejectors (also known as expansion pistons or pusher pistons) in stirling coolers. The compression piston is used to compress gas and is a mechanism which is subjected to high pressure and must have a high pressure seal. The ejector is a free piston which bears large temperature difference, the pressure at two ends of the free piston is approximately the same, the requirement on cylinder sealing is low, and the requirement on axial heat insulation is high, so that the ejector is a component with light weight and small heat conduction.
The rotary stirling cooler is a widely used class of stirling cycle refrigeration devices, but the service life of the rotary stirling cooler is relatively low, and the MTTF (time to average failure) is about 10000 hours, and the service life is mainly limited by the following factors:
1. the abrasion failure mainly refers to bearing abrasion, compression piston abrasion, ejector abrasion and the like;
2. the leakage of working medium gas mainly refers to the leakage of high-pressure helium gas in a refrigerator cavity;
3. the gas pollution is mainly caused by the deflation of various part materials in the refrigerator cavity;
4. solid pollution mainly refers to abrasion among moving parts in a refrigerator wall body;
among the above factors, wear failure is the most dominant contributing factor to the lower life of the rotary stirling cooler.
Through researches, the rotating pairs in the existing rotary Stirling refrigerator are connected through bearings, but the bearings are complex mechanical products, so that the rotary Stirling refrigerator is high in price, complex in assembly process and low in operation efficiency. The quality of the bearings of different manufacturers is uneven, and the time spent for selecting qualified bearing products is more, so that the service life of the bearings becomes one of the important factors influencing wear failure, and is one of the most important factors limiting the service life of the refrigerator.
Accordingly, it would be a matter of urgent need for those skilled in the art to provide a rotary stirling cooler that uses fewer or no bearings.
Disclosure of Invention
In view of the above, the present application is to provide a transmission assembly of a refrigerator and a rotary stirling refrigerator, so as to solve the technical problem that the service life of the conventional rotary stirling refrigerator is relatively low.
In order to achieve the technical aim, the application provides a transmission assembly of a refrigerator, which comprises a transmission crankshaft, a compression connecting rod and an expansion connecting rod;
the compression connecting rod and the expansion connecting rod are circumferentially distributed around the transmission crankshaft;
one end of the compression connecting rod is connected with a compression piston of the compression mechanism in a non-relative motion way, and the other end of the compression connecting rod is in line contact with the peripheral surface of the transmission crankshaft;
one end of the expansion connecting rod is connected with an expansion piston of the expansion mechanism in a non-relative motion way, and the other end of the expansion connecting rod is in line contact with the peripheral surface of the transmission crankshaft;
the transmission crankshaft is used for driving the compression connecting rod and the expansion connecting rod to reciprocate when the transmission crankshaft rotates.
Further, the drive crankshaft comprises a shaft and an eccentric sleeve;
the eccentric sleeve is sleeved on the shaft rod;
the other end of the compression connecting rod is in line contact with the outer peripheral surface of the eccentric sleeve;
the other end of the expansion connecting rod is in line contact with the outer peripheral surface of the eccentric sleeve.
Further, the transmission crankshaft further comprises a balance block;
the balance weight is mounted on the shaft lever.
Further, one end of the compression link is connected with the compression piston by a first connecting pin without relative movement.
Further, one end of the compression connecting rod is provided with a first pin hole penetrating through the compression connecting rod and allowing the first connecting pin to pass through;
one end of the compression piston is provided with a first mounting groove into which one end of the compression connecting rod extends;
the compression piston is provided with a second pin hole penetrating through the first mounting groove and corresponding to the first pin hole, and the first connecting pin penetrates through the second pin hole.
Further, the other end of the compression connecting rod is provided with a first cambered surface in line contact with the peripheral surface of the transmission crankshaft;
the roughness value of the first cambered surface is less than or equal to 0.4 mu m.
Further, one end of the expansion link is connected with the expansion piston through a second connecting pin without relative movement.
Further, one end of the expansion connecting rod is provided with a third pin hole which penetrates through the expansion connecting rod and is used for the second connecting pin to penetrate through;
one end of the expansion piston is provided with a second mounting groove into which one end of the expansion connecting rod extends;
and a fourth pin hole penetrating through the second mounting groove and corresponding to the third pin hole and allowing the second connecting pin to penetrate through is formed in the expansion piston.
Further, the other end of the expansion connecting rod is provided with a second cambered surface in line contact with the peripheral surface of the transmission crankshaft;
the roughness value of the second cambered surface is less than or equal to 0.4 mu m.
The application also discloses a rotary Stirling refrigerator, which comprises the refrigerator transmission assembly.
According to the technical scheme, the transmission assembly of the refrigerator is designed to be provided with the compression connecting rod to realize transmission connection between the transmission crankshaft and the compression mechanism, and the compression connecting rod and the transmission crankshaft are connected with the compression piston of the compression mechanism in a mode of no relative movement by adopting a line contact design; the expansion connecting rod is also designed to realize transmission connection between the transmission crankshaft and the expansion mechanism, and the expansion connecting rod is connected with an expansion piston of the expansion mechanism in a non-relative motion way by adopting a line contact design; the transmission connection design means replaces the traditional design means sleeved outside the transmission crankshaft, so that bearings for connection among the compression connecting rod, the expansion connecting rod and the transmission crankshaft are reduced, bearings for connection among the compression connecting rod and the compression mechanism are also reduced, at least four bearings are reduced, the production cost of the rotary Stirling refrigerator prepared by the assembly is reduced, the production efficiency is improved, the problem that the service life of the refrigerator is limited due to the service life of the bearing is well solved, and the service life of the rotary Stirling refrigerator prepared by the assembly is effectively prolonged.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a perspective view of a refrigerator drive assembly provided in the present application;
FIG. 2 is a front view of a refrigerator drive assembly provided in the present application;
in the figure: 1. a transmission crankshaft; 11. a shaft lever; 12. an eccentric sleeve; 13. a balance weight; 2. compressing the connecting rod; 21. a first cambered surface; 22. a first pin hole; 23. a first connecting pin; 3. an expansion link; 31. a second cambered surface; 32. a third pin hole; 33. a second connecting pin; 4. a compression piston; 41. a first mounting groove; 42. a second pin hole; 5. an expansion piston; 51. a second mounting groove; 52. and a fourth pin hole.
Detailed Description
The following description of the embodiments of the present application will be made in detail, but not necessarily all embodiments, with reference to the accompanying drawings. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the embodiments of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present application, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, interchangeably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in embodiments of the present application will be understood in detail by those of ordinary skill in the art.
The embodiment of the application discloses a transmission component of a refrigerator.
Referring to fig. 1, an embodiment of a transmission assembly of a refrigerator according to an embodiment of the present application includes:
a transmission crankshaft 1, a compression connecting rod 2 and an expansion connecting rod 3; the compression connecting rod 2 and the expansion connecting rod 3 are circumferentially distributed around the transmission crankshaft 1, and the included angle between the compression connecting rod 2 and the expansion connecting rod 3 is any angle, that is, the axial projection angle of the compression connecting rod 2 and the expansion connecting rod 3 on the transmission crankshaft 1 is any angle.
One end of the compression connecting rod 2 is connected with the compression piston 4 of the compression mechanism in a non-relative motion manner, namely, the compression connecting rod 2 and the compression piston 4 are fixedly assembled and cannot move relatively, so that bearings for connection between the compression connecting rod 2 and the compression piston 4 can be saved, and the assembly process is reduced; the other end of the compression connecting rod 2 is in line contact with the outer peripheral surface of the transmission crankshaft 1, and compared with a traditional sleeving manner, the line contact design manner ensures transmission fit between the transmission crankshaft 1 and the compression connecting rod 2, and simultaneously can reduce the bearing for connection between the compression connecting rod 2 and the transmission crankshaft 1 and reduce assembly procedures.
Similarly, one end of the expansion connecting rod 3 is connected with the expansion piston 5 of the expansion mechanism in a non-relative motion manner, namely, the expansion connecting rod 3 and the expansion piston 5 are fixedly assembled and cannot move relatively, so that a bearing for connecting the expansion connecting rod 3 and the expansion piston 5 can be saved, and the assembly process is reduced; the other end of the expansion connecting rod 3 is in line contact with the outer peripheral surface of the transmission crankshaft 1, and compared with a traditional sleeving manner, the line contact design manner ensures transmission fit between the transmission crankshaft 1 and the expansion connecting rod 3, and simultaneously can reduce the bearing for connection between the expansion connecting rod 3 and the transmission crankshaft 1 and reduce assembly procedures.
The transmission crankshaft 1 is used for driving the compression connecting rod 2 and the expansion connecting rod 3 to reciprocate when the transmission crankshaft itself rotates.
The transmission connection design means replaces the traditional design means sleeved outside the transmission crankshaft 1, so that bearings for connection between the compression connecting rod 2 and the expansion connecting rod 3 and the transmission crankshaft 1 are reduced, bearings for connection between the compression connecting rod 2 and the compression mechanism and bearings for connection between the expansion connecting rod 3 and the expansion mechanism are also reduced, at least four bearings are reduced, the production cost of the rotary Stirling refrigerator prepared by the assembly is reduced, the production efficiency is improved, the problem that the service life of the refrigerator is limited due to the service life of the bearings is solved well, and the service life of the rotary Stirling refrigerator prepared by the assembly is effectively prolonged.
The foregoing is an embodiment one of a transmission assembly of a refrigerator provided in the embodiments of the present application, and the following is an embodiment two of a transmission assembly of a refrigerator provided in the embodiments of the present application, and refer to fig. 1 to fig. 2 specifically.
Based on the scheme of the first embodiment:
further, in terms of the drive crankshaft 1 design, it comprises a shaft 11 and an eccentric sleeve 12.
The eccentric sleeve 12 is sleeved on the shaft rod 11, the eccentric sleeve 12 is in a cylindrical structure, and a matching cavity for the shaft rod 11 to pass through is eccentrically arranged, so that the eccentric sleeve 12 is formed.
Correspondingly, the other end of the compression link 2 is in line contact with the outer circumferential surface of the eccentric sleeve 12, and the other end of the expansion link 3 is in line contact with the outer circumferential surface of the eccentric sleeve 12. In the present application, the distance between the other end of the compression link 2 and the one end surface of the eccentric sleeve 12 is equal to the distance between the other end of the expansion link 3 and the one end surface of the eccentric sleeve 12, that is, the compression link 2 and the expansion link 3 are aligned in the axial direction of the shaft 11, not offset in the axial direction.
Further, in order to make the rotation of the transmission crankshaft 1 smoother, the transmission crankshaft further comprises a balance weight 13, wherein the balance weight 13 is mounted on the shaft lever 11, and the transmission crankshaft can be specifically designed or used with reference to the existing crankshaft without limitation.
Further, one end of the compression link 2 may be connected to the compression piston 4 in a fixed manner, in particular by means of a first connecting pin 23, i.e. fixedly mounted to the compression piston 4 by means of the first connecting pin 23.
Specifically, a first pin hole 22 penetrating through the compression link 2 and through which the first connecting pin 23 passes may be provided at one end of the compression link 2, and the one end of the compression link 2 may be in a circular ring shape, and the inner hole thereof may also form the first pin hole 22.
One end of the compression piston 4 is provided with a first mounting groove 41 into which one end of the compression link 2 is inserted, and the first mounting groove 41 may be an inner groove, without limitation. The compression piston 4 is provided with a second pin hole 42 penetrating through the first mounting groove 41 and corresponding to the first pin hole 22, and through which the first connecting pin 23 passes.
Further, in order to achieve the line contact fit, a first arc surface 21 is provided at the other end of the compression link 2, which is in line contact with the outer peripheral surface of the transmission crankshaft 1, specifically, the other end of the compression link 2 may be designed in a cylindrical shape, and the outer peripheral surface thereof forms the first arc surface 21.
In order to ensure smoothness of line contact, the roughness value of the first cambered surface 21 is designed to be 0.4 μm or less.
Further, in the same way, one end of the expansion link 3 may be connected in particular by means of a second connecting pin 33 with the expansion piston 5 without relative movement.
Specifically, a third pin hole 32 penetrating through itself and allowing the second connecting pin 33 to pass through may be provided at one end of the expansion link 3; the expansion link 3 may have a circular ring shape at one end, and the second pin hole 42 may be formed in the inner hole thereof.
One end of the expansion piston 5 is provided with a second mounting groove 51 into which one end of the expansion connecting rod 3 extends; the second mounting groove 51 may be a U-shaped open groove, and is not particularly limited. The expansion piston 5 is provided with a fourth pin hole 52 penetrating the second mounting groove 51 and corresponding to the third pin hole 32, and through which the second connecting pin 33 passes.
Further, in order to realize line contact fit, the other end of the expansion connecting rod 3 is provided with a second cambered surface 31 in line contact with the peripheral surface of the transmission crankshaft 1; specifically, the other end of the expansion link 3 may be designed in a cylindrical shape, and its outer circumferential surface forms the second cambered surface 31.
In order to ensure smoothness of line contact, the roughness value of the second cambered surface 31 is designed to be 0.4 μm or less.
The application also discloses a rotary Stirling refrigerator, which comprises a compression mechanism, an expansion mechanism and a refrigerator transmission assembly of the first embodiment or the second embodiment.
The transmission crankshaft 1 is driven by a motor to rotate, the compression connecting rod 2 is driven to linearly reciprocate under the driving of the rotation of the transmission crankshaft 1, and the compression connecting rod 2 drives the compression piston 4 to linearly reciprocate through the first connecting pin 23, so that the compression piston 4 performs compression motion in the compression cylinder body to perform refrigeration work of the Stirling refrigerator.
Correspondingly, under the drive of the rotation of the transmission crankshaft 1, the expansion connecting rod 3 is driven to linearly reciprocate, and the expansion connecting rod 3 drives the expansion piston 5 to linearly reciprocate through the second connecting pin 33, so that the expansion piston 5 performs expansion motion in the expansion cylinder body to perform refrigeration work of the Stirling refrigerator.
While the present application has been described in detail with respect to a refrigerator driving assembly and a rotary stirling refrigerator, those skilled in the art will appreciate that the present application is not limited to the above description, as modifications may be made to the specific embodiments and applications of the present application in accordance with the concepts of the embodiments of the present application.
Claims (10)
1. The transmission assembly of the refrigerator is characterized by comprising a transmission crankshaft (1), a compression connecting rod (2) and an expansion connecting rod (3);
the compression connecting rod (2) and the expansion connecting rod (3) are circumferentially distributed around the transmission crankshaft (1);
one end of the compression connecting rod (2) is connected with a compression piston (4) of the compression mechanism in a non-relative motion way, and the other end of the compression connecting rod is in line contact with the peripheral surface of the transmission crankshaft (1);
one end of the expansion connecting rod (3) is connected with an expansion piston (5) of the expansion mechanism in a non-relative motion way, and the other end of the expansion connecting rod is in line contact with the peripheral surface of the transmission crankshaft (1);
the transmission crankshaft (1) is used for driving the compression connecting rod (2) and the expansion connecting rod (3) to reciprocate when the transmission crankshaft is in rotation.
2. A refrigerator transmission assembly according to claim 1, characterized in that the transmission crankshaft (1) comprises a shaft (11) and an eccentric sleeve (12);
the eccentric sleeve (12) is sleeved on the shaft rod (11);
the other end of the compression connecting rod (2) is in line contact with the outer peripheral surface of the eccentric sleeve (12);
the other end of the expansion connecting rod (3) is in line contact with the outer peripheral surface of the eccentric sleeve (12).
3. A refrigerator transmission assembly according to claim 2, characterized in that the transmission crankshaft (1) further comprises a counterweight (13);
the balance weight (13) is mounted on the shaft lever (11).
4. A refrigerator transmission assembly according to claim 1, characterized in that one end of the compression link (2) is connected to the compression piston (4) by a first connecting pin (23) without relative movement.
5. A refrigerator transmission assembly according to claim 4, characterized in that one end of the compression link (2) is provided with a first pin hole (22) which penetrates itself and through which the first connecting pin (23) passes;
one end of the compression piston (4) is provided with a first mounting groove (41) into which one end of the compression connecting rod (2) extends;
the compression piston (4) is provided with a second pin hole (42) penetrating through the first mounting groove (41) and corresponding to the first pin hole (22) and allowing the first connecting pin (23) to pass through.
6. A refrigerator transmission assembly according to claim 1, characterized in that the other end of the compression connecting rod (2) is provided with a first cambered surface (21) in line contact with the outer circumferential surface of the transmission crankshaft (1);
the roughness value of the first cambered surface (21) is less than or equal to 0.4 mu m.
7. A refrigerator transmission assembly according to claim 1, characterized in that one end of the expansion link (3) is connected to the expansion piston (5) by means of a second connecting pin (33) without relative movement.
8. A refrigerator transmission assembly according to claim 7, characterized in that one end of the expansion link (3) is provided with a third pin hole (32) passing through itself and through which the second connecting pin (33) passes;
one end of the expansion piston (5) is provided with a second mounting groove (51) into which one end of the expansion connecting rod (3) extends;
the expansion piston (5) is provided with a fourth pin hole (52) penetrating through the second mounting groove (51) and corresponding to the third pin hole (32) and allowing the second connecting pin (33) to pass through.
9. A refrigerator transmission assembly according to claim 1, wherein the other end of the expansion link (3) is provided with a second cambered surface (31) in line contact with the outer peripheral surface of the transmission crankshaft (1);
the roughness value of the second cambered surface (31) is less than or equal to 0.4 mu m.
10. A rotary stirling cooler comprising a cooler drive assembly according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851965.0A CN116771875A (en) | 2023-07-12 | 2023-07-12 | Refrigerator transmission assembly and rotary Stirling refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310851965.0A CN116771875A (en) | 2023-07-12 | 2023-07-12 | Refrigerator transmission assembly and rotary Stirling refrigerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116771875A true CN116771875A (en) | 2023-09-19 |
Family
ID=87991334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310851965.0A Pending CN116771875A (en) | 2023-07-12 | 2023-07-12 | Refrigerator transmission assembly and rotary Stirling refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116771875A (en) |
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2023
- 2023-07-12 CN CN202310851965.0A patent/CN116771875A/en active Pending
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