Compressor and refrigeration equipment
By arranging an oil groove connected to the lubricating oil channel on the thrust surface of the crankshaft, the problem of poor lubrication effect of the thrust surface is solved, better lubrication effect and reliability are achieved, and wear and power consumption are reduced.
Patent Information
- Application Number
- CN202423240210.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the prior art, the thrust surface of the crankshaft has poor lubrication, which leads to severe wear, increased power consumption and possible reliability failure.
An oil groove connected to the lubricating oil channel is provided on the thrust surface of the crankshaft. The oil groove is connected to the lubricating oil channel to improve the lubrication effect of the thrust surface and increase the delivery capacity of the lubricating oil.
By improving the lubrication effect of the thrust surface, the axial force of the crankshaft on the crankcase is reduced, wear is reduced, power consumption is reduced, and the reliability of the compressor is improved.
Smart Images
Figure CN223482846U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of compressor technology, and more specifically, to a compressor and refrigeration equipment. Background Technology
[0002] The working principle of a compressor is that the crankshaft rotates on the crankcase, and the connecting rod converts the crankshaft's rotation into the reciprocating motion of the piston, thus achieving operation. The thrust surface, which is the surface in contact with the crankcase and crankshaft, is used to limit the crankshaft's axial movement. Typically, thrust surface lubrication involves oil grooves on the crankshaft, which deliver oil to the thrust surface during rotation. However, this method suffers from poor oil delivery due to the small axial clearance between the crankshaft and crankcase, resulting in inadequate lubrication and worsened wear on the thrust surface. This not only increases power consumption but may also lead to reliability failures. Therefore, improving the oil supply to the thrust surface and enhancing its lubrication performance are crucial for improving the compressor's energy efficiency and reliability. Utility Model Content
[0003] This application aims to at least solve the problem of poor lubrication of the thrust surface during crankshaft operation, which exists in the prior art or related technologies.
[0004] Therefore, the first aspect of this application is to propose a compressor.
[0005] The second aspect of this application is to provide a refrigeration device.
[0006] An embodiment of the first aspect of this application provides a compressor, including: a crankcase, the crankcase including a crankshaft bore section, on which a crankshaft bore is formed; a crankshaft, the crankshaft including a main shaft and a crank, the main shaft being disposed within the crankshaft bore, and along the axial direction of the main shaft, the end of the crankshaft bore section being provided with a thrust surface, the thrust surface being disposed around the crankshaft bore, the thrust surface being used to contact the crank, and the main shaft being provided with a lubricating oil passage; and an oil groove, disposed on the thrust surface, capable of communicating with the lubricating oil passage, for conveying lubricating oil to the thrust surface.
[0007] The compressor provided in this embodiment includes a crankcase and a crankshaft. The crankcase includes a crankshaft bore section with a crankshaft hole formed therein. The crankshaft includes a main shaft and a crank. The main shaft is disposed within the crankshaft hole. Along the axial direction of the main shaft, the end of the crankshaft bore section is provided with a thrust surface. The thrust surface surrounds the crankshaft hole and is used to contact the crank to prevent axial movement of the crankshaft. A lubricating oil passage is provided on the main shaft, and an oil groove is provided on the thrust surface, communicating with the lubricating oil passage to deliver lubricating oil to the thrust surface. In this embodiment, the compressor has an oil groove on the thrust surface. Compared to a compressor without a groove, the oil groove communicates with the lubricating oil passage, which effectively improves the lubrication effect of the thrust surface, thereby reducing the axial force exerted by the crankshaft on the crankcase. Furthermore, due to the presence of the oil groove, the oil in the lubricating oil passage is more easily delivered to the oil groove, and thus more easily delivered to the thrust surface.
[0008] In some embodiments, the oil tank is optionally formed by a first sidewall, a bottom surface, and a second sidewall, with the bottom surface connecting the first and second sidewalls. The smaller included angle between the first sidewall and the thrust surface is φ, and φ is less than 90°.
[0009] In this embodiment, the angle between the first sidewall and the thrust surface is less than 90°, that is, the first sidewall can form a sloping section instead of a standard square oil groove. The existence of this sloping section facilitates the flow of lubricating oil in the oil groove into the thrust surface, and also facilitates the flow of excess lubricating oil on the thrust surface back into the oil groove.
[0010] In some embodiments, the angle between the second sidewall and the thrust surface is optionally equal to 90°, that is, the second sidewall is perpendicular to the thrust surface.
[0011] In some embodiments, optionally, 5°≤φ≤15°.
[0012] In this embodiment, the angle between the first sidewall and the thrust surface is greater than or equal to 5° and less than or equal to 15°, which allows the first sidewall to have an appropriate slope, thereby facilitating the flow of lubricating oil into the thrust surface. Optionally, φ = 10°.
[0013] In some embodiments, optionally, the length of the bottom surface of the groove along the circumferential direction of the crankshaft bore is greater than or equal to 0.1 mm and less than or equal to 1.5 mm.
[0014] In this embodiment, the length of the groove bottom surface along the circumferential direction of the crankshaft bore is greater than or equal to 0.1 mm and less than or equal to 1.5 mm. For example, it can be 1 mm. If the groove bottom surface is too short, the oil storage capacity will be small, resulting in limited lubrication effect; if the length is too long, the lubricating oil dispersion effect will be insignificant, which will reduce the lubrication effect of the thrust surface.
[0015] In some embodiments, the depth of the oil tank may be greater than or equal to 1 μm and less than or equal to 10 μm.
[0016] In this embodiment, the depth of the oil groove is greater than or equal to 1 μm and less than or equal to 10 μm. Optionally, the depth of the oil groove is greater than or equal to 5 μm and less than or equal to 10 μm. For example, it can be 5 μm. If the depth is too deep, it cannot achieve a better lubrication effect; if the depth is too shallow, it increases the difficulty of preparing the oil groove.
[0017] In some embodiments, the number of oil grooves may be multiple, and the multiple oil grooves are spaced apart along the circumferential direction of the crankshaft bore.
[0018] In this embodiment, there are multiple oil grooves, which are spaced apart along the circumferential direction of the crankshaft bore on the thrust surface, so that the oil supply to the entire thrust surface is more uniform.
[0019] In some embodiments, the number of oil tanks may be greater than or equal to two and less than or equal to four.
[0020] In this embodiment, the number of oil grooves is greater than or equal to 2 and less than or equal to 4. For example, 2. Having too many oil grooves does not further improve the lubrication effect; therefore, setting it to 2 to 4 is most suitable.
[0021] In some embodiments, the oil groove is optionally provided to pass through the thrust surface along the radial direction of the crankshaft bore.
[0022] In this embodiment, the oil groove is arranged to pass through the thrust surface along the radial direction of the crankshaft bore, so that the oil in the lubrication channel can flow into the oil groove better, thereby achieving the best lubrication effect.
[0023] In some embodiments, the crankshaft may optionally include an eccentric shaft connected to the end of the crank away from the main shaft, and the compressor may also include: a motor connected to the end of the main shaft away from the crank; a connecting rod connected at one end to the eccentric shaft; and a piston connected to the other end of the connecting rod.
[0024] In this embodiment, the crankshaft also includes an eccentric shaft connected to the end of the crank away from the main shaft. The compressor also includes a motor, a connecting rod, and a piston. In this way, the motor can drive the main shaft to rotate, and the main shaft will drive the eccentric shaft to rotate. Under the action of the connecting rod, the rotation of the main shaft is converted into the reciprocating motion of the piston.
[0025] The second aspect of this utility model provides a refrigeration device, including a compressor as described in any of the technical solutions of the first aspect of this utility model. The refrigeration device provided by this utility model possesses the compressor of any of the technical solutions of the first aspect of this utility model, and therefore has all the beneficial effects of the compressor of any of the technical solutions of the first aspect of this utility model.
[0026] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description
[0027] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0028] Figure 1 One of the structural schematic diagrams of the crankcase according to an embodiment of the present invention is shown;
[0029] Figure 2 It shows Figure 1 Enlarged view of the structure at point C;
[0030] Figure 3 A second schematic diagram of the crankcase according to an embodiment of the present invention is shown;
[0031] Figure 4 It shows Figure 3 A sectional view of section AA;
[0032] Figure 5 It shows Figure 4 Enlarged view of the structure at point B;
[0033] Figure 6 A schematic diagram of the compressor according to an embodiment of the present invention is shown;
[0034] Figure 7 One of the structural schematic diagrams of the crankshaft according to an embodiment of the present invention is shown;
[0035] Figure 8 A second schematic diagram of the crankshaft structure according to an embodiment of the present invention is shown;
[0036] Figure 9 A schematic diagram of the eccentric shaft according to an embodiment of the present invention is shown;
[0037] Figure 10 A schematic diagram of the structure of a refrigeration device according to an embodiment of the present invention is shown.
[0038] Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:
[0039] 1. Crankcase, 12. Crankshaft bore section, 14. Crankshaft bore, 142. Thrust surface, 16. Oil groove, 162. First side wall, 164. Groove bottom, 166. Second side wall, 2. Compressor, 22. Crankshaft, 222. Main shaft, 224. Crank, 226. Eccentric shaft, 23. Motor, 24. Lubricating oil passage, 25. Connecting rod, 26. Piston pin, 27. Piston, 28. Spring pin, 3. Refrigeration equipment. Detailed Implementation
[0040] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0041] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.
[0042] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, an embodiment of the first aspect of this application provides a compressor 2, including a crankcase 1 and a crankshaft 22. The crankcase 1 includes a crankshaft bore section 12, on which a crankshaft bore 14 is formed. The crankshaft 22 includes a main shaft 222 and a crank 224. The main shaft 222 is disposed within the crankshaft bore 14. Along the axial direction of the main shaft 222, a thrust surface 142 is provided at the end of the crankshaft bore section 12. The thrust surface 142 is disposed around the crankshaft bore 14 and is used to contact the crank 224. A lubricating oil passage 24 is provided on the main shaft 222. An oil groove 16 is disposed on the thrust surface 142 and is able to communicate with the lubricating oil passage 24 for conveying lubricating oil to the thrust surface 142.
[0043] The compressor 2 provided in this embodiment has an oil groove 16 on the thrust surface 142. Compared to a compressor without a groove, the oil groove 16 is connected to the lubrication oil passage 24, which can effectively improve the lubrication effect of the thrust surface 142, thereby reducing the axial force exerted by the crankshaft 22 on the crankcase 1. In addition, due to the presence of the oil groove 16, the oil in the lubrication oil passage 24 is more easily delivered to the oil groove 16, and thus more easily delivered to the thrust surface 142.
[0044] In some embodiments, optionally, such as Figure 3 , Figure 4 and Figure 5 As shown, the oil tank 16 is formed by a first side wall 162, a bottom surface 164, and a second side wall 166. The bottom surface 164 is connected between the first side wall 162 and the second side wall 166. The small included angle between the first side wall 162 and the thrust surface 142 is φ, and φ is less than 90°.
[0045] In this embodiment, the angle between the first sidewall 162 and the thrust surface 142 is less than 90°, that is, the first sidewall 162 can form a sloping section instead of a standard square oil groove 16. The existence of this sloping section facilitates the flow of lubricating oil in the oil groove 16 into the thrust surface 142, and also facilitates the flow of excess lubricating oil on the thrust surface 142 back into the oil groove 16.
[0046] In some embodiments, the angle between the second sidewall 166 and the thrust surface 142 is 90°, that is, the second sidewall 166 and the thrust surface 142 are perpendicular to each other.
[0047] In some embodiments, optionally, 5°≤φ≤15°.
[0048] In this embodiment, the angle between the first sidewall 162 and the thrust surface 142 is greater than or equal to 5° and less than or equal to 15°, which allows the first sidewall 162 to have an appropriate slope, thereby facilitating the flow of lubricating oil into the thrust surface 142. Optionally, φ = 10°.
[0049] In some embodiments, optionally, the length L of the groove bottom surface 164 along the circumferential direction of the crankshaft bore 14 is greater than or equal to 0.1 mm and less than or equal to 1.5 mm.
[0050] In this embodiment, along the circumferential direction of the crankshaft bore 14, the length L of the groove bottom surface 164 is greater than or equal to 0.1 mm and less than or equal to 1.5 mm. For example, it can be 1 mm. If the length L of the groove bottom surface 164 is too short, the oil storage capacity will be small and the lubrication effect will be limited. If the length L is too long, the lubricating oil dispersion effect will be insignificant, which will reduce the lubrication effect of the thrust surface 142.
[0051] In some embodiments, the depth D of the oil trough 16 is optionally greater than or equal to 1 μm and less than or equal to 10 μm.
[0052] In this embodiment, the depth D of the oil groove 16 is greater than or equal to 1 μm and less than or equal to 10 μm. Optionally, the depth D of the oil groove 16 is greater than or equal to 5 μm and less than or equal to 10 μm. For example, it can be 5 μm. If the depth D is too deep, it cannot achieve a better lubrication effect; if the depth D is too shallow, it increases the difficulty of manufacturing the oil groove 16.
[0053] In some embodiments, the number of oil grooves 16 may be multiple, and the multiple oil grooves 16 are spaced apart along the circumferential direction of the crankshaft bore 14.
[0054] In this embodiment, there are multiple oil grooves 16, which are spaced apart on the thrust surface 142 along the circumferential direction of the crankshaft hole 14, so that the oil supply to the entire thrust surface 142 is more uniform.
[0055] In some embodiments, the thrust surface 142 may optionally be annular in shape.
[0056] In some embodiments, the number of oil tanks 16 may be greater than or equal to 2 and less than or equal to 4.
[0057] In this embodiment, the number of oil grooves 16 is greater than or equal to 2 and less than or equal to 4. For example, 2. Having too many oil grooves 16 will not further improve the lubrication effect; therefore, setting it to 2 to 4 is most suitable.
[0058] In some embodiments, optionally, such as Figure 2 As shown, the oil groove 16 is provided through the thrust surface 142 along the radial direction of the crankshaft bore 14.
[0059] In this embodiment, the oil groove 16 is provided to pass through the thrust surface 142 along the radial direction of the crankshaft bore 14, so that the oil in the lubrication channel 24 can flow into the oil groove 16 better, thereby achieving the best lubrication effect.
[0060] In some embodiments, optionally, such as Figure 6 , Figure 7 , Figure 8 and Figure 9 As shown, the crankshaft 22 also includes an eccentric shaft 226 connected to the end of the crank 224 away from the main shaft 222, and the compressor 2 also includes a motor 23 connected to the end of the main shaft 222 away from the crank 224; one end of the connecting rod 25 is connected to the eccentric shaft 226; and the piston 27 is connected to the other end of the connecting rod 25.
[0061] In this embodiment, the crankshaft 22 also includes an eccentric shaft 226 connected to the end of the crank 224 away from the main shaft 222. The compressor 2 also includes a motor 23, a connecting rod 25, a piston 27, and a spring pin 28. Thus, during the operation of the compressor 2, the motor 23 drives the crank 224 to rotate, which in turn drives the eccentric shaft 226 to rotate. Since the connecting rod 25 is located on the outside of the eccentric shaft 226, it can be driven to reciprocate, thereby driving the piston 27 to reciprocate. In this process, the lubrication effect between crank 224 and crankcase 1 is relatively poor. Currently, the lubrication process typically involves oil in the lubrication passages 24 on crankshaft 22 spiraling into the gap between crank 224 and crankcase 1 due to inertia during crankshaft 22 rotation. However, since the gap between crank 224 and crankcase 1 is usually small, the oil in the lubrication passages 24 has difficulty entering the gap, resulting in limited conventional lubrication. This application provides an oil groove 16 on the thrust surface 142, which communicates with the lubrication passages 24. This allows the oil in the lubrication passages 24 to easily enter the gap through the oil groove 16 during crankshaft 22 rotation, thereby improving the lubrication effect between crank 224 and crankcase 1. Optionally, piston 27 and connecting rod 25 can be fixed by piston pin 26.
[0062] like Figure 10As shown, the second aspect of this utility model provides a refrigeration device 3, including a compressor 2 as described in any of the technical solutions of the first aspect of this utility model. The refrigeration device 3 provided by this utility model possesses the compressor 2 as described in any of the technical solutions of the first aspect of this utility model, and therefore has all the beneficial effects of the compressor 2 as described in any of the technical solutions of the first aspect of this utility model.
[0063] In some embodiments, the refrigeration device 3 may optionally be a refrigerator or an air conditioner, etc.
[0064] Another embodiment of this application provides a crankcase 1 for improving the lubrication of the thrust surface 142, thereby improving the wear of the thrust surface 142, reducing the power consumption of the compressor 2, and improving the reliability of the compressor 2.
[0065] Specifically, the compressor 2 includes a crankshaft assembly, which includes a crankshaft 22. The crankshaft 22 has a lubricating oil passage 24, which is connected to the lubricating oil sump of the compressor 2. A wedge-shaped oil groove 16 extending radially is provided on the thrust surface 142. The wedge-shaped oil groove 16 is composed of a flat section, a ramp section and an oil groove section, and is used to replenish the amount of oil on the thrust surface 142.
[0066] The depth D of the oil tank section satisfies 1μm≤D≤10μm.
[0067] The width L of the oil trough section satisfies 0.1mm≤L≤1.5mm.
[0068] The included angle φ between the slope section and the thrust surface 142 satisfies 5°≤φ≤15°.
[0069] The oil groove 16 extends radially through the thrust surface 142 of the thrust bearing.
[0070] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
[0071] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A compressor, characterized in that, include: A crankcase, the crankcase including a crankshaft bore section, on which a crankshaft bore is formed; A crankshaft, comprising a main shaft and a crank, wherein the main shaft is disposed within the crankshaft bore, and along the axial direction of the main shaft, the end of the crankshaft bore section is provided with a thrust surface, the thrust surface being arranged around the crankshaft bore and used to contact the crank, and the main shaft is provided with a lubricating oil passage; An oil groove is provided on the thrust surface and can communicate with the lubricating oil passage to deliver lubricating oil to the thrust surface.
2. The compressor according to claim 1, characterized in that, The oil tank is formed by a first side wall, a bottom surface, and a second side wall. The bottom surface connects the first side wall and the second side wall. The smaller included angle between the first side wall and the thrust surface is φ, and φ is less than 90°.
3. The compressor according to claim 2, characterized in that, 5°≤φ≤15°.
4. The compressor according to claim 2, characterized in that, Along the circumferential direction of the crankshaft bore, the length of the bottom surface of the groove is greater than or equal to 0.1 mm and less than or equal to 1.5 mm.
5. The compressor according to claim 1, characterized in that, The depth of the oil tank is greater than or equal to 1 μm and less than or equal to 10 μm.
6. The compressor according to claim 1, characterized in that, The number of oil grooves is multiple, and the multiple oil grooves are spaced apart along the circumferential direction of the crankshaft hole.
7. The compressor according to claim 6, characterized in that, The number of oil tanks is greater than or equal to 2 and less than or equal to 4.
8. The compressor according to any one of claims 1 to 7, characterized in that, The oil groove extends through the thrust surface along the radial direction of the crankshaft bore.
9. The compressor according to any one of claims 1 to 7, characterized in that, The crankshaft further includes an eccentric shaft connected to the end of the crank away from the main shaft, and the compressor further includes: An electric motor is connected to the end of the main shaft away from the crank. The connecting rod is connected at one end to the eccentric shaft; The piston is connected to the other end of the connecting rod.
10. A refrigeration device, characterized in that, include: The compressor as described in any one of claims 1 to 9.