Integrated heat dissipation structure for speed reducer
By integrating the cooling heat dissipation cavity and maze heat dissipation structure on the reducer housing, the problem of large space and low efficiency of the reducer heat dissipation structure is solved, and efficient heat dissipation and lightweight are achieved.
Patent Information
- Application Number
- CN202422298598.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-20
AI Technical Summary
The existing reducer heat dissipation structures have problems such as large space and low heat dissipation efficiency, especially external heat exchangers and air-cooled heat dissipation are greatly affected by the layout structure of the vehicle.
The integrated heat dissipation structure is adopted to integrate the cooling heat dissipation cavity into the reducer housing, and a maze-type heat dissipation structure and a spiral flow channel are installed inside, so that the cooling liquid can fully contact the reducer housing and heat exchange are reduced to reduce the dependence on the layout structure of the vehicle.
It improves heat dissipation efficiency, reduces the volume and weight of the reducer, reduces manufacturing costs, and is not affected by the layout structure of the vehicle.
Smart Images
Figure CN223120576U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of speed reducers, and particularly relates to an integrated heat dissipation structure for a speed reducer. Background Art
[0002] With the popularization and development of electric vehicles, the requirements for the integration and lightweight of the whole vehicle for speed reducers are getting higher and higher. And due to the high-speed development of speed reducers, the heat generated by gears and bearings is getting larger and larger. Therefore, a reasonable heat dissipation structure is required for the speed reducer to ensure that the speed reducer will not be ablated at high temperature, and at the same time, the increase in volume and mass brought by the heat dissipation structure should be reduced.
[0003] The prior art usually dissipates heat from the speed reducer in the following forms: one is to set an external heat exchanger, and pump the lubricating oil inside the speed reducer into the heat exchanger through an oil pump. At the same time, the heat exchanger is externally connected to a coolant to take away the heat of the lubricating oil. This heat dissipation structure requires an external oil pump and heat exchanger, so it occupies a large space and the overall cost of the speed reducer assembly is relatively high. The other is to dissipate heat by air cooling. During the operation of the whole vehicle, the heat on the surface of the housing is taken away by the air flow. This heat dissipation structure is greatly affected by the layout of the whole vehicle. If the external structure blocks the speed reducer housing, the heat dissipation efficiency of the air cooling structure will be greatly reduced.
[0004] Therefore, the existing heat dissipation structure of the speed reducer still needs to be improved. Based on this, a new type of integrated heat dissipation structure for the speed reducer is provided. Summary of the Utility Model
[0005] The utility model is to solve the technical problems that the existing heat dissipation structure of the speed reducer using an external heat exchanger and air cooling has large space occupation and low heat dissipation efficiency. The purpose is to provide an integrated heat dissipation structure for the speed reducer, which does not require external parts such as a heat exchanger and an oil pump, reduces the volume, weight and manufacturing cost of the speed reducer, and has high heat dissipation efficiency, good effect and is not affected by the layout structure of the whole vehicle.
[0006] The utility model is realized through the following technical solutions:
[0007] An integrated heat dissipation structure for a speed reducer, comprising:
[0008] A cooling and heat dissipation cavity, integrated on the speed reducer housing, and the cooling and heat dissipation cavity has a coolant inlet and a coolant outlet;
[0009] A labyrinth heat dissipation structure and an outflow channel are arranged inside the cooling and heat dissipation cavity, and the coolant flows through the labyrinth heat dissipation structure and is in full contact with the speed reducer housing for heat exchange and then flows out from the outflow channel.
[0010] As a further technical solution of the utility model, the cooling and heat dissipation cavity is arranged at the bottom of the speed reducer housing.
[0011] As a further technical solution of the present utility model, the coolant inlet includes a coolant inlet hole and a coolant inlet nozzle. The coolant inlet hole is opened on the reducer housing and communicated with the cooling and heat dissipation cavity. The coolant inlet nozzle is threadedly connected to the coolant inlet hole.
[0012] As a further technical solution of the present utility model, the coolant outlet includes a coolant outlet hole and a coolant outlet nozzle. The coolant outlet hole is opened on the reducer housing and communicated with the cooling and heat dissipation cavity. The coolant outlet nozzle is threadedly connected to the coolant outlet hole.
[0013] As a further technical solution of the present utility model, the labyrinth heat dissipation structure includes a partition plate and a plurality of flow guide plates arranged inside the cooling and heat dissipation cavity. The plurality of flow guide plates are alternately arranged on the inner wall of the cooling and heat dissipation cavity and the partition plate.
[0014] As a further technical solution of the present utility model, the plurality of flow guide plates and the partition plate and the inner wall of the cooling and heat dissipation cavity form a spiral flow channel.
[0015] As a further technical solution of the present utility model, the end face of the cooling and heat dissipation cavity has a sealing ring installation groove, and the sealing ring is embedded in the sealing ring installation groove.
[0016] As a further technical solution of the present utility model, the sealing ring is made of rubber material.
[0017] As a further technical solution of the present utility model, the end face of the cooling and heat dissipation cavity is connected with a sealing cover plate.
[0018] As a further technical solution of the present utility model, the sealing cover plate is connected to the end face of the cooling and heat dissipation cavity through locking bolts.
[0019] Compared with the prior art, the present utility model has the following advantages and beneficial effects:
[0020] 1. The heat dissipation structure of the present utility model is integrated on the reducer housing and arranged at the bottom of the reducer housing. Most of the lubricating oil inside the reducer is concentrated at the bottom of the reducer under the action of gravity. The lubricating oil forms good contact with the bottom housing. The cooling and heat dissipation cavity is arranged at the bottom of the reducer housing. After the coolant is connected inside the cooling and heat dissipation cavity, it can effectively take away the heat of the housing, thereby reducing the temperature of the lubricating oil inside the housing. At the same time, due to the agitation of the gears during operation, the lubricating oil inside the reducer forms an internal circulation process, and the cooled lubricating oil at the bottom of the reducer can be taken away in time, so that the lubricating oil contacts the heat dissipation structure over a large area, greatly improving the heat dissipation efficiency of the integrated heat dissipation structure, and there is no need to add an auxiliary layout structure of an oil pump.
[0021] 2. The heat dissipation structure of the present utility model is integrated into the reducer housing, eliminating the need for external heat exchangers, oil pumps and other components, greatly reducing the volume and weight of the reducer.
[0022] 3. The heat dissipation structure of the present utility model is integrated onto the reducer housing and is integrally formed by die casting, greatly reducing the manufacturing cost of the reducer.
[0023] 4. By arranging partitions and a number of flow guiding plates inside the cooling and heat dissipation cavity of the present utility model, the flow guiding plates are alternately arranged on the inner wall of the cooling and heat dissipation cavity and the partitions. This alternately arranged structure enables the flow guiding plates, the partitions and the inner wall of the cooling and heat dissipation cavity to form a spiral flow channel. During the process of the coolant passing through this spiral flow channel, the passing distance of the coolant through the housing can be increased, thereby increasing the contact area and contact time between the coolant and the housing, and more effectively removing the heat of the housing. By removing the temperature of the housing through the coolant, the heat dissipation efficiency is much higher than that of air cooling and is not affected by the vehicle layout structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not limit the embodiments of the present utility model. In the drawings:
[0025] Figure 1 is a schematic diagram of the overall structure of the reducer assembly with an integrated heat dissipation structure;
[0026] Figure 2 is a schematic diagram of the overall structure of the reducer assembly with an integrated heat dissipation structure when the sealing cover plate is removed; Figure 1 ;
[0027] Figure 3 is a schematic diagram of the overall structure of the reducer assembly with an integrated heat dissipation structure when the sealing cover plate is removed; Figure 2 ;
[0028] Figure 4 is a schematic diagram of the exploded structure of the heat dissipation structure;
[0029] Figure 5 is a schematic diagram of the internal structure of the heat dissipation structure.
[0030] Markings in the drawings and corresponding component names:
[0031] 1 - reducer housing, 2 - coolant inlet, 201 - coolant inlet hole, 202 - coolant inlet nozzle, 3 - coolant outlet, 301 - coolant outlet hole, 302 - coolant outlet nozzle, 4 - cooling and heat dissipation cavity, 401 - spiral flow channel, 402 - partition, 403 - outflow channel, 404 - sealing ring installation groove, 405 - flow guiding plate, 5 - sealing ring, 6 - sealing cover plate, 7 - locking bolt. Detailed implementation mode
[0032] In order to make the purpose, technical solution and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with embodiments and drawings. The illustrative implementation modes and descriptions of the present utility model are only used to explain the present utility model and are not used as a limitation to the present utility model.
[0033] In the following description, a large number of specific details are set forth in order to provide a thorough understanding of the present utility model. However, it is obvious to those of ordinary skill in the art that: these specific details do not have to be adopted to implement the present utility model. In other embodiments, in order to avoid confusing the present utility model, well-known structures, circuits, materials or methods are not specifically described.
[0034] Throughout the specification, the reference to "one embodiment", "embodiment", "one example" or "example" means that the specific features, structures or characteristics described in connection with that embodiment or example are included in at least one embodiment of the present utility model. Therefore, the phrases "one embodiment", "embodiment", "one example" or "example" that appear in various places throughout the specification do not necessarily all refer to the same embodiment or example. In addition, the specific features, structures or characteristics can be combined in any appropriate combination and / or sub-combination in one or more embodiments or examples. In addition, those of ordinary skill in the art should understand that the drawings provided here are for illustrative purposes only and the drawings are not necessarily drawn to scale. The term "and / or" used here includes any and all combinations of one or more of the related listed items.
[0035] In the description of the present utility model, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.
[0036] At the same time, the terms "set", "assembled", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0037] An integrated heat dissipation structure for a speed reducer, as Figures 1-5 shown, includes a cooling and heat dissipation cavity 4, a coolant inlet 2, a coolant outlet 3 and a labyrinth heat dissipation structure.
[0038] See also Figure 1 and 2 The cooling and heat dissipation cavity 4 is integrated on the reducer housing 1 and is a structure formed in one piece by mold casting. Preferably, the cooling and heat dissipation cavity 4 is arranged at the bottom of the reducer housing 1. Since the lubricating oil inside the reducer is mostly concentrated at the bottom of the reducer due to gravity, the lubricating oil forms a good contact with the bottom shell. Therefore, the cooling and heat dissipation cavity 4 is arranged at the bottom of the reducer housing 1. After the cooling liquid is connected to the cooling and heat dissipation cavity 4, the heat of the shell can be effectively taken away, thereby reducing the temperature of the lubricating oil inside the shell.
[0039] See also Figure 4 The cooling and heat dissipation cavity 4 has a coolant inlet 2 and a coolant outlet 3. The coolant inlet 2 includes a coolant water inlet hole 201 and a coolant water inlet nozzle 202. The coolant water inlet hole 201 is provided on the reducer housing 1 and communicates with the cooling and heat dissipation cavity 4. The coolant water inlet nozzle 202 is threadedly connected to the coolant water inlet hole 201. The coolant outlet 3 includes a coolant water outlet hole 301 and a coolant water outlet nozzle 302. The coolant water outlet hole 301 is provided on the reducer housing 1 and communicates with the cooling and heat dissipation cavity 4. The coolant water outlet nozzle 302 is threadedly connected to the coolant water outlet hole 301.
[0040] Specifically, the coolant inlet hole 201 and the coolant outlet hole 301 are threaded holes, and the coolant inlet nozzle 202 and the coolant outlet nozzle 302 are processed with M18*1.5 threads. The coolant inlet hole 201 and the coolant inlet nozzle 202, the coolant outlet hole 301 and the coolant outlet nozzle 302 are all installed through threaded matching, and the threads are coated with thread sealant before assembly to prevent coolant leakage during use.
[0041] See also Figures 3-5 The cooling and heat dissipation cavity 4 is provided with a labyrinth heat dissipation structure and an outflow channel 403. The coolant flows through the labyrinth heat dissipation structure and fully contacts and exchanges heat with the reducer housing 1 before flowing out from the outflow channel 403. When in use, the coolant enters the cooling and heat dissipation cavity 4 and flows through the labyrinth heat dissipation structure. In the process of passing through the heat dissipation labyrinth structure, the distance of the coolant passing through the housing can be increased, thereby increasing the contact area and contact time between the coolant and the housing, thereby more effectively removing the heat of the housing.
[0042] See also Figure 5, the labyrinth heat dissipation structure includes a partition plate 402 and a plurality of flow guide plates 405 arranged inside the cooling and heat dissipation cavity 4. The plurality of flow guide plates 405 are alternately arranged on the inner wall of the cooling and heat dissipation cavity 4 and the partition plate 402. This alternately arranged structure enables the plurality of flow guide plates 405 and the partition plate 402, and the inner wall of the cooling and heat dissipation cavity 4 to form a spiral flow channel 401. During the process of the coolant passing through this spiral flow channel 401, the passing distance of the coolant through the housing can be increased, thereby increasing the contact area and contact time between the coolant and the housing, and thus more effectively taking away the heat of the housing.
[0043] See Figure 4 , the end face of the cooling and heat dissipation cavity 4 has a sealing ring installation groove 404, and the sealing ring installation groove 404 is formed by machining to form a complete groove around the end face of the cooling and heat dissipation cavity 4. The sealing ring 5 is embedded in the sealing ring installation groove 404.
[0044] The sealing ring 5 is made of rubber and is formed by injection molding. The sealing ring 5 is a profiling structure and is designed according to the structure of the sealing ring installation groove 404. The sealing ring 5 can be very well matched and placed in the sealing ring installation groove 404.
[0045] The end face of the cooling and heat dissipation cavity 4 is connected to a sealing cover plate 6. The sealing cover plate 6 is machined according to the shape of the heat dissipation labyrinth structure and the sealing ring installation groove 404. The sealing cover plate 6 is connected to the end face of the cooling and heat dissipation cavity 4 through locking bolts. After the sealing cover plate 6 is attached to the end face of the cooling and heat dissipation cavity 4, 8 locking bolts are used to press the sealing cover plate 6 tightly against the end face of the cooling and heat dissipation cavity 4. The compressed sealing ring 5 can play a good sealing role, so that the cooling and heat dissipation cavity 4 becomes a closed cooling water channel. When the coolant passes through, the heat of the housing can be taken away, achieving a good heat dissipation effect.
[0046] When the present utility model is in use, the coolant flows into the cooling and heat dissipation cavity 4 through the coolant inlet nozzle 202. Inside the cooling and heat dissipation cavity 4, it flows through the labyrinth heat dissipation structure. During the process of passing through the heat dissipation labyrinth structure, due to the presence of the partition plate 402 and the flow guide plates 405, the coolant flows along the spiral flow channel 401, which can increase the passing distance of the coolant through the housing, thereby increasing the contact area and contact time between the coolant and the housing, and thus more effectively taking away the heat of the housing. Finally, the coolant passes through the outflow channel 403 and flows out from the coolant outlet nozzle 302 to complete the cooling and heat dissipation process.
[0047] Finally, it should be noted that: The above specific embodiments are only used to elaborate in detail the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above description is only the specific implementation manners of the present invention and is not used to limit the protection scope of the present invention; Although the present invention has been described in detail with reference to the foregoing specific embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements, improvements, etc. on some or all of the technical features; And these modifications, equivalent replacements and improvements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.
Claims
1. An integrated heat dissipation structure for a speed reducer, characterized in that Comprising: A cooling and heat dissipation cavity (4), integrated on the reducer housing (1), the cooling and heat dissipation cavity (4) having a coolant inlet (2) and a coolant outlet (3); A labyrinth heat dissipation structure and an outflow channel (403) are provided inside the cooling and heat dissipation cavity (4), and the coolant flows through the labyrinth heat dissipation structure and is in full contact with the reducer housing (1) for heat exchange and then flows out from the outflow channel (403).
2. The integrated heat dissipation structure for a speed reducer according to claim 1, characterized in that, The cooling and heat dissipation cavity (4) is arranged at the bottom of the reducer housing (1).
3. An integrated heat dissipation structure for a speed reducer according to claim 1, characterized in that, The coolant inlet (2) includes a coolant inlet hole (201) and a coolant inlet nozzle (202), the coolant inlet hole (201) is opened on the reducer housing (1) and communicates with the cooling and heat dissipation cavity (4), and the coolant inlet nozzle (202) is threadedly connected to the coolant inlet hole (201).
4. An integrated heat dissipation structure for a speed reducer according to claim 1, characterized in that, The coolant outlet (3) includes a coolant outlet hole (301) and a coolant outlet nozzle (302), the coolant outlet hole (301) is opened on the reducer housing (1) and communicates with the cooling and heat dissipation cavity (4), and the coolant outlet nozzle (302) is threadedly connected to the coolant outlet hole (301).
5. An integrated heat dissipation structure for a speed reducer according to claim 1, characterized in that, The labyrinth heat dissipation structure includes a partition plate (402) and a plurality of flow guide plates (405) arranged inside the cooling and heat dissipation cavity (4), and the plurality of flow guide plates (405) are alternately arranged on the inner wall of the cooling and heat dissipation cavity (4) and the partition plate (402).
6. An integrated heat dissipation structure for a speed reducer according to claim 5, characterized in that, The plurality of flow guide plates (405) and the partition plate (402) and the inner wall of the cooling and heat dissipation cavity (4) form a spiral flow channel (401).
7. An integrated heat dissipation structure for a speed reducer according to any one of claims 1-6, characterized in that, The end face of the cooling and heat dissipation cavity (4) has a sealing ring installation groove (404), and the sealing ring (5) is embedded in the sealing ring installation groove (404).
8. An integrated heat dissipation structure for a speed reducer according to claim 7, characterized in that, The sealing ring (5) is made of rubber material.
9. An integrated heat dissipation structure for a speed reducer according to claim 8, characterized in that, The end face of the cooling and heat dissipation cavity (4) is connected with a sealing cover plate (6).
10. An integrated heat dissipation structure for a speed reducer according to claim 9, characterized in that, The sealing cover plate (6) is connected to the end face of the cooling and heat dissipation cavity (4) through a locking bolt.