Oil chamber assembly structure of oil cooler, oil cooler and vehicle

Abstract

The utility model relates to the technical field of transmission cooling, and provides an oil chamber assembly structure of an oil cooler, the oil cooler and a vehicle. The oil chamber assembly structure of the oil cooler comprises a tubular oil chamber shell and a blocking plate arranged at the end of the oil chamber shell. The oil chamber shell comprises a first arc-shaped plate and a second arc-shaped plate which are oppositely arranged, and two flat plates which are arranged in parallel, and the radian of the first arc-shaped plate is larger than that of the second arc-shaped plate; the first arc-shaped plate and the second arc-shaped plate are provided with a first inserting hole and a second inserting hole respectively, and the blocking plate is installed in a matched mode through the first inserting hole and the second inserting hole and brazed together with the oil chamber shell. According to the oil chamber assembly structure of the oil cooler, through the topological optimization design of the arc-shaped plates and the flat plates and the gradient curvature design of the arc-shaped plates, an oil liquid flow guide path can be optimized, welding stress distribution is made to be uniform, the connection strength between the blocking plate and the oil chamber shell can be enhanced through a connection structure between the blocking plate and the oil chamber shell, and the oil chamber assembly structure is suitable for the oil cooler. Therefore, the use performance of the oil chamber of the oil cooler can be improved.

Description

Technical Field

[0001] This utility model relates to the field of transmission cooling technology, and in particular to an oil cooler oil chamber assembly structure. It also relates to an oil cooler incorporating this oil chamber assembly structure, and a vehicle using the aforementioned oil cooler. Background Technology

[0002] In vehicle structures, oil coolers, used to cool lubricating oil or hydraulic oil, are widely used in engines, hydraulic systems, transmission systems, and other fields. Oil coolers are typically located in the hydraulic system circuit. During operation, the high-temperature oil in the hydraulic system flows through the hydraulic oil cooler, where it undergoes efficient heat exchange with forced-flowing cold air, lowering the oil temperature to the operating temperature to ensure continuous and normal operation of the main engine and smooth vehicle operation.

[0003] The oil chamber structure of an oil cooler, as a crucial component, plays a vital role in the oil cooling process. In traditional oil cooler structures, plugs are typically mounted at both ends of a circular tube. During brazing in a brazing furnace, the brazed composite layer at the contact surface between the plug and the oil chamber structure melts, specifically the inner brazed composite layer of the plug. This creates a gap between the plug and the oil chamber structure. Due to uneven thermal stress distribution, the plug experiences uneven stress and is prone to deformation, leading to a widening gap and ultimately, leakage.

[0004] To compensate for this deficiency, the plug needs to be reinforced a second time after assembly using argon arc welding. However, this process has significant problems: the connection strength is highly dependent on the welding technique, and if the welding quality is substandard, leakage is likely to occur; at the same time, the high temperature of the secondary welding will weaken the mechanical properties of the base material (such as grain coarsening in the heat-affected zone), further reducing the strength of the connection, and ultimately causing the oil cooler seal to fail, affecting the heat exchange efficiency and stability of the transmission oil cooling system. Utility Model Content

[0005] In view of this, the present invention aims to propose a structure for an oil chamber assembly of an oil cooler, so as to improve its performance.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] An oil cooler oil chamber assembly structure includes a tubular oil chamber shell and a blocking plate located at the end of the oil chamber shell;

[0008] The oil chamber housing includes a first arc-shaped plate and a second arc-shaped plate arranged opposite to each other, and two flat plates connected between the first arc-shaped plate and the second arc-shaped plate. The two flat plates are arranged in parallel and together with the first arc-shaped plate, the second arc-shaped plate and the blocking plate define the inner cavity of the oil chamber. The arc of the first arc-shaped plate is greater than the arc of the second arc-shaped plate.

[0009] The first arc-shaped plate is provided with a first insertion hole, and the second arc-shaped plate is provided with a second insertion hole. The length of the first insertion hole is greater than the length of the second insertion hole, and the plug plate is inserted into the second insertion hole through the first insertion hole and brazed together with the oil chamber shell.

[0010] Furthermore, the middle portions of the first arc-shaped plate and the second arc-shaped plate both arch outwards from the direction away from the oil chamber cavity; and / or, the connection portions of the first arc-shaped plate and the two flat plates are provided with a first rounded corner, and the connection portions of the second arc-shaped plate and the two flat plates are provided with a second rounded corner.

[0011] Furthermore, the second arc-shaped plate is provided with a plurality of mounting holes communicating with the inner cavity of the oil chamber. The plurality of mounting holes are arranged at intervals along the length direction of the oil chamber shell, and each mounting hole is used to install the flat tube of the oil cooler.

[0012] Furthermore, at least one of the flat plates is provided with a connecting pipe on its outer side that communicates with the inner cavity of the oil chamber. The connecting pipe is used to connect with an external pipe body. The end of the connecting pipe abuts against a limiting part on the external pipe body, thereby limiting the insertion depth of the external pipe body.

[0013] Furthermore, the blocking plate is provided with a guide portion for guiding the blocking plate into the second insertion hole; and / or, one of the blocking plate and the oil chamber housing is provided with a guide block, and the other of the blocking plate and the oil chamber housing is provided with a guide groove, the guide block being embedded in the guide groove, which can guide the blocking plate from the first insertion hole into the second insertion hole.

[0014] Furthermore, the blocking plate has a first exposed portion located outside the first insertion hole and a second exposed portion located outside the second insertion hole.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] The oil cooler oil chamber assembly structure of this utility model, by setting the oil chamber shell to be composed of a first arc-shaped plate and a second arc-shaped plate arranged opposite each other, and two parallel flat plates, can effectively reduce the overall thickness of the core, improve space utilization, and meet the requirements of compact structural design compared to the circular tube structure used in traditional structures. At the same time, it can also effectively increase the heat dissipation area of ​​the core and improve heat exchange efficiency. Furthermore, by utilizing the gradient curvature design of the two arc-shaped plates, the flow field and flow path of the oil in the oil chamber cavity can be optimized, reducing the pressure loss inside the oil cooler, improving the oil circulation efficiency, and also making the welding stress distribution more uniform.

[0017] Meanwhile, by setting a first insertion hole and a second insertion hole on two opposite sides of the oil chamber shell, with the length of the first insertion hole being greater than the length of the second insertion hole, and the plug plate being inserted into the second insertion hole through the first insertion hole and brazed together with the oil chamber shell, this asymmetrical insertion hole design not only limits the installation direction of the plug plate but also provides a certain limiting effect on the plug plate, ensuring that the plug plate is well sealed at the end of the oil chamber shell. It also simplifies assembly and improves assembly efficiency. Furthermore, the radial connection structure of the plug plate penetrating the oil chamber shell also ensures the position of the plug plate on the oil chamber shell, effectively increasing the contact area between the plug plate and the oil chamber shell, enhancing the connection strength between the plug plate and the oil chamber shell, reducing deformation caused by uneven stress on the plug plate, and enhancing the sealing performance of the oil chamber of the oil cooler. This improves the performance of the oil chamber.

[0018] Furthermore, the middle portions of both the first and second arc-shaped plates arch away from the oil chamber cavity, which further improves the oil flow field within the oil chamber, optimizes the flow path, further reduces pressure loss inside the oil cooler, and improves oil circulation efficiency. The connection points between the first arc-shaped plate and the two flat plates are provided with a first rounded corner, and the connection points between the second arc-shaped plate and the two flat plates are provided with a second rounded corner. This effectively avoids stress concentration at the connection points and prevents fatigue cracking.

[0019] Secondly, multiple mounting holes communicating with the inner cavity of the oil chamber are provided on the second arc-shaped plate, so that each mounting hole is used to install the flat tube of the oil cooler. In this way, the oil chamber assembly structure of the oil cooler matches the flat tube, which helps to reduce flow resistance and improve oil circulation efficiency. Moreover, when rectangular flat tubes are used, compared with the traditional flat tubes with rounded ends, they have a larger surface area in contact with the fins, effectively increasing the contact area with the fins, thereby helping to enhance heat conduction, reduce thermal resistance, and improve heat exchange efficiency.

[0020] Furthermore, a connecting pipe communicating with the inner cavity of the oil chamber is provided on the outer side of the plate to facilitate the insertion and connection of the external tube. The end of the connecting pipe abuts against the limiting part on the external tube, limiting the insertion depth of the external tube into the inner cavity of the oil chamber. This design not only precisely limits the insertion depth of the external tube, effectively reducing flow resistance and enhancing heat exchange efficiency, but also prevents interference with the flat tube due to excessive insertion compared to traditional through-hole structures. It also improves the reliability of the connection between the oil cooler's oil chamber assembly structure and the external tube. The guide block and guide groove structure provided between the plug plate and the oil chamber shell allow the plug plate to be smoothly inserted from the first insertion hole to the second insertion hole.

[0021] In addition, the plug plate has a first exposed portion and a second exposed portion, such that the first exposed portion and the second exposed portion are located outside the first insertion hole and the second insertion hole, respectively. At this time, by applying opposing pressure to the first exposed portion and the second exposed portion, and by utilizing the deformation of the plug plate material itself, the plug plate can be better riveted to the oil chamber shell, realizing the pre-fixation of the plug plate on the oil chamber shell, and then welding connection is performed. This can further ensure the connection strength between the plug plate and the oil chamber shell, and further improve the connection reliability between the plug plate and the oil chamber shell.

[0022] Another objective of this invention is to provide an oil cooler comprising two oil chambers spaced apart and a plurality of flat tubes connected between the two oil chambers; at least one of the oil chambers adopts the oil cooler oil chamber assembly structure as described above.

[0023] Furthermore, the flat tube includes a first flat tube shell having a cavity, and a plurality of partitions arranged at intervals within the cavity, the plurality of partitions dividing the cavity into a plurality of first diversion channels.

[0024] Furthermore, the flat tube includes a second flat tube shell and a rib plate disposed within the second flat tube shell, and the two side walls of the second flat tube shell in the thickness direction and the rib plate are both wavy; the rib plate is located between the two side walls and divides the flow channel within the second flat tube shell into a plurality of second flow channels, each of the second flow channels extending along the length direction of the second flat tube shell.

[0025] The oil cooler of this utility model, by adopting the above-mentioned oil chamber component structure, can not only reduce the overall thickness of the core and improve the space utilization, but also increase the heat dissipation area of ​​the core to improve the heat exchange efficiency. It also facilitates simplified assembly, strengthens the connection between the plug plate and the oil chamber shell, and reduces the deformation of the plug plate caused by uneven stress, thereby improving the durability and reliability of the oil cooler.

[0026] In addition, the flat tube includes a flat tube shell and ribs, and the two side walls of the flat tube shell in the thickness direction and the ribs are all wavy. This can increase the contact area between the flat tube and the air, improve the heat exchange efficiency of the flat tube, and thus improve the heat exchange efficiency of the oil cooler.

[0027] Another objective of this invention is to provide a vehicle equipped with an oil cooler as described above.

[0028] By adopting the oil cooler described above, the vehicle of this utility model can reduce the overall thickness of the core, improve space utilization, increase the heat dissipation area of ​​the core to improve heat exchange efficiency, simplify assembly, enhance the connection strength between the plug plate and the oil chamber shell, reduce the deformation of the plug plate caused by uneven stress, and improve the performance of the oil cooler, which in turn improves the performance of the vehicle. Attached Figure Description

[0029] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0030] Figure 1 This is a first-view structural schematic diagram of the oil chamber assembly structure of the oil cooler according to an embodiment of the present utility model;

[0031] Figure 2 This is a second-view structural schematic diagram of the oil chamber assembly structure of the oil cooler described in this embodiment of the present invention;

[0032] Figure 3 This is a third-view structural schematic diagram of the oil chamber assembly structure of the oil cooler described in this embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the oil chamber housing according to an embodiment of the present invention;

[0034] Figure 5 This is a first-view structural schematic diagram of the blocking plate described in an embodiment of the present utility model;

[0035] Figure 6 This is a second-view structural schematic diagram of the blocking plate described in an embodiment of the present utility model;

[0036] Figure 7 This is a first comparison diagram of the oil cooler oil chamber assembly structure described in this embodiment of the invention and the existing oil cooler oil chamber assembly structure;

[0037] Figure 8 This is a second comparative diagram of the oil cooler oil chamber assembly structure described in this embodiment of the invention and the existing oil cooler oil chamber assembly structure;

[0038] Figure 9 This is a partial cross-sectional view of the oil chamber housing and the plug plate in the cooperation state described in the embodiment of this utility model;

[0039] Figure 10 This is a schematic diagram of the structure of the oil cooler described in an embodiment of the present invention;

[0040] Figure 11 This is a schematic diagram of the first structure of the flat tube according to an embodiment of the present utility model;

[0041] Figure 12 This is a schematic diagram of the second structure of the flat tube described in this embodiment of the present invention;

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Oil chamber shell; 2. Blocking plate; 3. Flat tube; 4. Round tube; 5. Inlet pipe; 6. Outlet pipe;

[0044] 101. First insertion hole; 102. Second insertion hole; 103. Mounting hole; 104. First fillet; 105. Second fillet; 106. Guide block; 21. First exposed part; 22. Second exposed part; 201. Guide groove; 211. Chamfer; 20. Oil chamber cavity; 11. Connecting pipe; 12. First arc plate; 13. Second arc plate; 14. First flat plate; 15. Second flat plate; 300. First branch channel; 300a. Second branch channel; 301. First flat tube shell; 302. Partition; 304. First end wall; 305. Second end wall; 306. Second flat tube shell; 307. Rib; 3011. Protrusion. Detailed Implementation

[0045] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0046] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0048] Furthermore, in the description of this utility model, it should be noted that the directional terms used in this embodiment, such as "up," "down," "left," "right," "front," and "rear," are defined based on the vertical, horizontal, and longitudinal directions of the vehicle. Specifically, the vertical direction of the vehicle is the height direction, the longitudinal direction is the length direction, and the horizontal direction is the width direction. "Inner" and "outer" are defined based on the outline of the corresponding components. For example, the interior and exterior of the vehicle are defined based on the vehicle's outline, with the side closer to the center of the vehicle being "inner" and the opposite side being "outer."

[0049] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0050] Example 1

[0051] In vehicle structures, oil coolers, as devices used to cool lubricating oil or hydraulic oil, are widely used in engines, hydraulic systems, transmission systems, and other fields. Oil coolers are typically located in the hydraulic system circuit. During operation, the high-temperature oil in the hydraulic system flows through the hydraulic oil cooler, where it undergoes efficient heat exchange with forced-flowing cold air, lowering the oil temperature to the operating temperature to ensure continuous and normal operation of the main unit and smooth workflow.

[0052] The oil chamber assembly structure of an oil cooler is a crucial component, playing a vital role in the oil cooling process. In traditional oil cooler structures, plugs are typically mounted at both ends of a circular tube. During brazing in a brazing furnace, the brazed composite layer at the contact surface between the plug and the oil chamber assembly structure melts—that is, the brazed composite layer inside the plug melts. This creates a gap between the plug and the oil chamber structure. Furthermore, due to uneven thermal stress distribution, the plug experiences uneven stress, making it prone to deformation. This leads to a widening of the gap between the plug and the oil chamber structure, ultimately causing leakage.

[0053] To compensate for this deficiency, the plug cap needs to be reinforced a second time by argon arc welding after assembly. However, this process has significant problems: the connection strength is highly dependent on the welding technology, and if the welding quality is substandard, leakage is likely to occur; at the same time, the high temperature of the secondary welding will weaken the mechanical properties of the base material (such as grain coarsening in the heat-affected zone), further reducing the strength of the connection, ultimately leading to the failure of the oil cooler seal and affecting the heat exchange efficiency and stability of the transmission oil cooling system.

[0054] Therefore, this embodiment addresses the problem in the prior art where the plug plate of the oil chamber assembly structure deforms due to uneven stress, leading to leakage at the connection between the plug plate and the oil chamber shell. A new oil chamber assembly structure for oil coolers is proposed, and by optimizing its structure, its sealing performance and performance can be enhanced.

[0055] And in terms of overall composition, such as Figures 1 to 3 As shown, the oil cooler oil chamber assembly structure of this embodiment includes a tubular oil chamber shell 1 and a blocking plate 2 located at the end of the oil chamber shell 1. The oil chamber shell 1 includes a first arc-shaped plate 12 and a second arc-shaped plate 13 arranged opposite to each other, and two flat plates connected between the first arc-shaped plate 12 and the second arc-shaped plate 13. The two flat plates are arranged in parallel and, together with the first arc-shaped plate 12, the second arc-shaped plate 13, and the blocking plate 2, define the inner cavity 20 of the oil chamber. The curvature of the first arc-shaped plate 12 is greater than the curvature of the second arc-shaped plate 13.

[0056] Furthermore, a first insertion hole 101 is provided on the first arc plate 12, and a second insertion hole 102 is provided on the second arc plate 13. The length of the first insertion hole 101 is greater than the length of the second insertion hole 102, and the plug plate 2 is inserted into the second insertion hole 102 through the first insertion hole 101 and brazed together with the oil chamber housing 1.

[0057] In this structure, the oil chamber shell 1 is formed by a first arc-shaped plate 12 and a second arc-shaped plate 13 arranged opposite to each other, as well as two flat plates arranged opposite to each other. Compared with the circular tube oil chamber structure used in traditional structures, this effectively reduces the overall thickness of the core, improves space utilization, and meets the requirements of a compact structural design. At the same time, it can also effectively increase the heat dissipation area of ​​the core and improve heat exchange efficiency. Furthermore, setting the curvature of the first arc-shaped plate 12 to be greater than that of the second arc-shaped plate 13 can optimize the flow field and flow path of the oil in the oil chamber cavity, reduce the pressure loss inside the oil cooler, and improve the oil circulation efficiency.

[0058] Meanwhile, by providing a first insertion hole 101 and a second insertion hole 102 on opposite sides of the oil chamber housing 1, with the length of the first insertion hole 101 being greater than the length of the second insertion hole 102, and the plug plate 2 being inserted into the second insertion hole 102 through the first insertion hole 101 and brazed together with the oil chamber housing 1, this asymmetrical insertion hole design not only limits the installation direction of the plug plate 2 but also provides a certain limiting effect on the plug plate 2, ensuring that the plug plate 2 is well sealed at the end of the oil chamber housing 1, and facilitating assembly simplification and improving assembly efficiency. Furthermore, the radial connection structure of the plug plate 2 penetrating the oil chamber housing 1 also ensures the position of the plug plate 2 on the oil chamber housing 1, effectively increasing the contact area between the plug plate 2 and the oil chamber housing 1, enhancing the connection strength between the plug plate 2 and the oil chamber housing 1, reducing deformation caused by uneven stress on the plug plate 2, and enhancing the sealing performance of the oil chamber 20, thereby improving the performance of the oil cooler's oil chamber.

[0059] Based on the above overview, for more details, please refer to [link / reference]. Figures 1 to 3 As shown in the figure, the oil cooler oil chamber assembly structure of this embodiment includes an oil chamber housing 1 and a blocking plate 2 disposed at the end of the oil chamber housing 1. Referring to... Figure 4 and combined Figures 1 to 3 As shown, the oil chamber shell 1 is tubular, comprising a first arc-shaped plate 12 and a second arc-shaped plate 13 arranged opposite to each other, and two flat plates arranged opposite to each other. The arc of the first arc-shaped plate 12 is greater than the arc of the second arc-shaped plate 13, and the two flat plates are... Figure 4 The first plate 14 and the second plate 15 shown in the figure, the first arc plate 12, the second arc plate 13, and the first plate 14 and the second plate 15 together with the end plates form the inner cavity 20 of the oil chamber.

[0060] The oil chamber housing 1 in this embodiment adopts this structural form, compared with the circular tube 4 structure used in the traditional structure, such as Figure 7 As shown, with the same core thickness Lm, the oil chamber housing 1 structure of this embodiment can effectively reduce the overall thickness of the core, reducing it by about 10%, thereby improving space utilization and achieving the requirement of a compact structural design. Moreover, when designing the oil cooler structure, the core position can be adjusted more flexibly to avoid interference with the front and rear cores or the vehicle frame, and the component volume can also be reduced, promoting the overall lightweighting of the vehicle.

[0061] like Figure 8As shown, when the Y-axis length of the core is the same, the effective length Ln of the flat tube 3 with the round tube 4 structure is less than the effective length Ln' of the flat tube 3 in this embodiment. In other words, the oil chamber shell 1 structure in this embodiment can also effectively increase the heat dissipation area of ​​the core, with the effective heat dissipation area increasing by about 5%. The contact area between the oil and the air increases, improving the heat exchange efficiency. This helps to ensure that the oil cooler can effectively reduce the oil temperature under various operating conditions and extend the service life of the transmission.

[0062] Reference Figures 1 to 4 As shown, in this embodiment, a first insertion hole is provided on the first arc-shaped plate 12, and a second insertion hole 102 is provided on the second arc-shaped plate 13, with the length of the first insertion hole 101 being greater than the length of the second insertion hole 102. The blocking plate 2 has a first insertion hole 101 inserted into the second insertion hole 102 and is brazed together with the oil chamber housing 1. At this time, the first insertion hole and the second insertion hole adopt an asymmetrical design, which on the one hand can limit the installation direction of the blocking plate 2, and on the other hand, while ensuring that the blocking plate 2 blocks the cross-section of the oil chamber housing 1, it can also form a certain limiting effect on the blocking plate 2, which is conducive to simplifying assembly and improving assembly efficiency.

[0063] Meanwhile, in this embodiment, by adopting a radial connection structure where the plug plate 2 penetrates the oil chamber shell 1, on the one hand, uneven deformation of the plug plate 2 under stress can be effectively prevented during brazing, increasing the connection strength between the plug plate 2 and the oil chamber shell 1; on the other hand, compared to a connection structure where one end of the plug plate 2 passes through the oil chamber shell 1 and the other end abuts against the inner wall of the oil chamber shell 1, this radial connection structure uses more solder, resulting in better welding performance and effectively avoiding the risk of leakage due to insufficient solder. Furthermore, it eliminates the need for a second welding process after brazing, thereby simplifying the production process, reducing costs, and improving system reliability.

[0064] It should be noted that both the oil chamber housing 1 and the plug plate 2 are made of aluminum alloy composite brazing plates. After the plug plate 2 and the oil chamber housing 1 are assembled in place, the plug plate 2 is squeezed by external force, and the deformation of the plug plate 2 material itself is used to pre-rivet and fix the plug plate 2 and the oil chamber housing 1, and then braze them together.

[0065] In a preferred embodiment, the middle portion of the first arc-shaped plate 12 arches away from the inner cavity 20 of the oil chamber, and the middle portion of the second arc-shaped plate 13 also arches away from the inner cavity 20 of the oil chamber. This arrangement improves the flow field of the oil within the inner cavity 20 of the oil chamber, optimizes the flow path, reduces bends and local contractions, thereby reducing pressure loss inside the oil cooler and improving oil circulation efficiency.

[0066] It is also worth noting that, compared to a flat plate structure at this location, the second arc-shaped plate 13, when applying the same pressure to the oil chamber 20, results in a more uniform stress distribution and a smaller maximum stress value when the stress reaches the material's yield strength. The radius of the second arc-shaped plate 13 is preferably between 95-105 mm. In practice, it can be set to 95 mm, 100 mm, or 105 mm. This limitation on the radius of the second arc-shaped plate 13 avoids both insufficient heat dissipation area due to an excessively small radius and insufficient strength enhancement due to an excessively large radius.

[0067] Similarly, as a preferred embodiment, in this example, Figure 3 and Figure 4 As shown, the connection between the first arc-shaped plate 12 and the two flat plates is provided with a first fillet 104, and the connection between the second arc-shaped plate 13 and the two flat plates is provided with a second fillet 105. The provision of the first fillet 104 and the second fillet 105 effectively avoids stress concentration at the connection points and prevents fatigue cracking.

[0068] Reference Figure 1 and Figure 4 As shown in the illustration, in this embodiment, the second arc-shaped plate 13 is provided with multiple mounting holes 103 communicating with the inner cavity 20 of the oil chamber. These mounting holes 103 are spaced apart along the length of the oil chamber shell 1, and each mounting hole 103 is used to mount the flat tube 3 of the oil cooler. In this case, the oil chamber assembly structure of the oil cooler cooperates with the flat tube 3, which helps to reduce flow resistance and improve oil circulation efficiency. Furthermore, when the flat tube 3 is rectangular, compared to a conventional flat tube 3 with rounded ends, it has a larger surface area in contact with the fins, effectively increasing the contact area with the fins, thereby helping to enhance heat conduction, reduce thermal resistance, and improve heat exchange efficiency.

[0069] In this embodiment, as a preferred implementation, a connecting pipe 11 communicating with the inner cavity 20 of the oil chamber is provided on the outer side of one of the flat plates. The connecting pipe 11 is used to connect with the outer pipe body, and the end of the connecting pipe 11 abuts against the limiting part on the outer pipe body, which can limit the insertion depth of the outer pipe body. The outer pipe body can be either an inlet pipe 5 or an outlet pipe 6.

[0070] In a specific implementation, preferably, the connecting pipe 11 is integrally formed on the outer side of one of the flat plates, and the inner and outer sides of the root of the connecting pipe 11 are transitionally connected to the flat plate through arc surfaces. The height of the connecting pipe 11 is preferably set between 4mm and 6mm, for example, 4mm, 5mm, or 6mm. The end of the connecting pipe furthest from the flat plate is used to abut against the limiting part on the inlet pipe 5 or the outlet pipe 6, thereby limiting the insertion depth of the inlet pipe 5 or the outlet pipe 6 and ensuring the welding length. It is understood that the connecting pipe 11 can also be fixed to the outer side of one of the flat plates by welding.

[0071] In this embodiment, a connecting pipe 11 communicating with the inner cavity 20 of the oil chamber is provided on the outside of one of the flat plates, which facilitates the insertion and connection of the external pipe. Moreover, the end of the connecting pipe 11 abuts against the limiting part on the external pipe, which can limit the insertion depth of the external pipe into the inner cavity 20 of the oil chamber. This design can not only accurately limit the insertion depth of the external pipe, effectively reduce flow resistance and enhance heat exchange efficiency, but also, compared with the through hole structure directly set on the flat plate in the traditional structure, the connecting pipe 11 structure in this embodiment can also prevent interference with the flat tube 3 due to excessive insertion, and at the same time improve the reliability of the connection between the oil chamber assembly structure of the oil cooler and the external pipe.

[0072] To facilitate the smooth insertion of the plug plate 2 into the second insertion hole 102, as a preferred embodiment, in this embodiment, a guide portion is provided on the plug plate 2, which is used to guide the plug plate 2 into the second insertion hole 102.

[0073] Specifically, such as Figure 5 and Figure 6 As shown, the blocking plate 2 has a main body portion that seals within the channel, a first portion connected to one end of the main body portion and inserted into the first insertion hole 101, and a second portion connected to the other end of the main body portion and inserted into the second insertion hole 102. During assembly, the second portion is first inserted into the first insertion hole 101, and then into the second insertion hole 102. The aforementioned guide portion includes a chamfer 211 at the end edge of the second portion, corresponding to both ends of the second insertion hole 102 along its length. The chamfer 211 facilitates smoother insertion of the blocking plate 2 into the first insertion hole 101 and the second insertion hole 102.

[0074] It is worth mentioning that, in addition to the above-mentioned structural form, the guide part can also be provided with chamfers 211 at both ends of the second part corresponding to the width direction of the second insertion hole 102, or with chamfers 211 on the side of the second insertion hole 102 near the channel. This can also guide the plug plate 2 to be smoothly inserted into the second insertion hole 102 of the device.

[0075] In some feasible implementations, in order to facilitate the blocking plate 2 to pass through the first insertion hole and be inserted into the second insertion hole in sequence, in this embodiment, a guide block 106 is provided on one of the blocking plate 2 and the oil chamber housing 1, and a guide groove 201 is provided on the other of the blocking plate 2 and the oil chamber housing 1. The guide block 106 is embedded in the guide groove 201, which can guide the blocking plate 2 to be inserted from the first insertion hole 101 into the second insertion hole 102.

[0076] In specific implementation, such as Figure 9 As shown, a guide block 106 is provided on the inner wall of the oil chamber housing 1, forming a ring shape along the inner wall of the oil chamber housing 1. A guide groove 201 is provided on the end of the plug plate 2. During installation, the guide block 106 is located in the guide groove 201. With the cooperation of the guide block 106 and the guide groove 201, the plug plate 2 can be smoothly inserted from the first insertion hole 101 into the second insertion hole 102. This improves the ease of installation of the plug plate 2 on the oil chamber housing 1, thereby increasing assembly efficiency. It can be understood that the positions of the guide block 106 and the guide groove 201 can be interchanged.

[0077] Still refer to Figure 5 and Figure 6 As shown, in this embodiment, as a preferred implementation, the plug plate 2 has a first exposed portion 21 located outside the first insertion hole 101, and a second exposed portion 22 located outside the second insertion hole 102. When the plug plate 2 is inserted into the oil chamber housing 1 of the device, the end of the first portion, i.e., the first exposed portion 21, is located outside the first insertion hole 101, and the end of the second portion, i.e., the second exposed portion 22, is located outside the second insertion hole 102.

[0078] In specific implementation, the distance L1 between the outer edge of the first exposed part 21 and the outer side of the corresponding oil chamber housing 1, and the distance L2 between the outer edge of the second exposed part 22 and the outer side of the corresponding oil chamber housing 1 are preferably the same, and preferably set to 0.5mm-1mm, for example, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm or 1mm.

[0079] At this time, the arrangement of the first exposed part 21 and the second exposed part 22 is conducive to the application of external force. That is, by applying opposing pressure to the first exposed part 21 and the second exposed part 22, and by utilizing the deformation of the material of the plug plate 2 itself, the first exposed part 21 and the second exposed part 22 are respectively riveted to the first insertion hole 101 and the second insertion hole 102, thereby achieving the pre-fixation of the plug plate 2 on the oil chamber housing 1, and then performing brazing connection. This can further ensure the connection strength between the plug plate 2 and the oil chamber housing 1, and further improve the connection reliability between the plug plate 2 and the oil chamber housing 1.

[0080] Furthermore, in practice, before brazing, flux can be sprayed onto the plug plate. This can work with the brazing filler metal to promote the formation of the brazed joint, thereby improving the welding quality and sealing between the plug plate and the oil chamber shell. This effectively prevents leakage from the oil chamber cavity and effectively isolates external moisture from entering the oil chamber cavity.

[0081] The oil cooler oil chamber assembly structure of this embodiment, through topological optimization design of the arc-shaped plate and the flat plate, and with the help of the gradient curvature design of the arc-shaped plate, optimizes the oil flow path, resulting in uniform welding stress distribution. Furthermore, by optimizing the connection structure between the oil chamber shell 1 and the plug plate 2, the position of the plug plate 2 on the oil chamber shell 1 can be more accurately guaranteed, effectively increasing the contact area between the plug plate 2 and the oil chamber shell 1, and enhancing the connection strength between them. This effectively reduces deformation caused by uneven stress on the plug plate 2, thereby enhancing the sealing performance of the oil cooler oil chamber assembly structure. Simultaneously, the oil cooler oil chamber assembly structure of this embodiment can also effectively reduce the overall thickness of the core, improve space utilization, and effectively increase the heat dissipation area of ​​the core, thereby improving heat exchange efficiency.

[0082] Example 2

[0083] This embodiment relates to an oil cooler, such as... Figure 10 As shown, the oil cooler includes two oil chambers arranged at intervals, and a plurality of flat tubes 3 connected between the two oil chambers. At least one of the oil chambers adopts the oil chamber assembly structure of the oil cooler in Embodiment 1.

[0084] Specifically, in this embodiment, the two spaced-apart oil chambers in the oil cooler both adopt the oil chamber assembly structure of the oil cooler in Embodiment 1, and multiple flat tubes 3 connect the two oil chambers. In specific implementation, after the blocking plate 2 is riveted and pre-fixed to the oil chamber shell 1, it is assembled with the multiple flat tubes 3, and then welded into shape in a brazing furnace. The connecting pipes 11 on the two oil chamber assembly structures of the oil cooler are respectively connected to the liquid inlet pipe 5 and the liquid outlet pipe 6, and the position of the liquid inlet is lower than the position of the liquid outlet.

[0085] It is worth noting that, in addition to both oil chambers adopting the oil cooler oil chamber assembly structure described in Embodiment 1, it is also possible to only set one oil chamber to adopt the oil cooler oil chamber assembly structure described in Embodiment 1. It is also worth noting that the cross-sectional shape of the flat tube 3 can be a long strip structure composed of two opposite parallel sides and two opposite arc-shaped sides, or it can be a rectangular structure. In this embodiment, a rectangular structure is preferred, that is, a rectangular flat tube 3 is used.

[0086] Specifically, the flat tube 3 in this embodiment, as a preferred implementation, has the following structure: Figure 11As shown, the flat tube 3 includes a first flat tube shell 301 with a cavity, and a plurality of partitions 302 arranged at intervals within the cavity, which divide the cavity into a plurality of first flow channels 300. The first flat tube shell 301 is rectangular in shape by two side walls in the thickness direction and a first end wall 304 and a second end wall 305 respectively connected to the two ends of the two side walls.

[0087] In order to increase the heat exchange area, in this embodiment, multiple protrusions 3011 protruding into the cavity are formed on both side walls in the thickness direction of the first flat tube shell 301. The multiple protrusions 3011 on the two side walls are arranged opposite to each other, and the multiple protrusions 3011 on each side wall are respectively located in the multiple first diversion channels 300.

[0088] Furthermore, since traditional flat tube structures suffer from unsatisfactory heat exchange performance, this embodiment uses a flat tube as an alternative structural form, with its structure referring to... Figure 12 As shown, the flat tube 3 includes a second flat tube shell 306 and a rib 307 disposed within the second flat tube shell 306. The two side walls of the second flat tube shell 306 in the thickness direction and the rib 307 are both wavy. The rib 307 is located between the two side walls and divides the flow channel within the second flat tube shell 306 into a plurality of second flow channels 300a. Each second flow channel 300a extends along the length direction of the second flat tube shell 306.

[0089] Furthermore, in the width direction of the flat tube 3, one end of the two sidewalls is connected together through the first end wall 304, and the other end of the two sidewalls is connected together through the second end wall 305. The first end wall 304, the second end wall 305, and the two sidewalls together form a rectangular shape. At this time, the flat tube 3 includes a second flat tube shell 306 and a rib plate 307, and the two sidewalls in the thickness direction of the flat tube shell 306 and the rib plate 307 are all wavy. This can increase the contact area between the flat tube 3 and the air, improve the heat exchange efficiency of the flat tube 3, that is, improve the heat exchange efficiency of the oil cooler.

[0090] It should be pointed out that, for Figure 12 For the flat tube structure shown, the shape of the mounting hole provided on the oil chamber housing 1 needs to be designed to match the shape of the flat tube 3 so that the flat tube 3 and the oil chamber housing 1 can be better fixed together.

[0091] The oil cooler of this embodiment, by adopting the oil chamber assembly structure of the oil cooler in Embodiment 1, can not only reduce the overall thickness of the core and improve space utilization, but also increase the heat dissipation area of ​​the core to improve heat exchange efficiency. It also simplifies assembly, strengthens the connection between the blocking plate 2 and the oil chamber shell 1, and reduces the deformation of the blocking plate 2 caused by uneven stress, thereby improving the durability and reliability of the oil cooler.

[0092] Furthermore, this embodiment also relates to a vehicle equipped with the aforementioned oil cooler.

[0093] In this embodiment, the vehicle uses the aforementioned oil cooler, which reduces the overall thickness of the core, improves space utilization, increases the heat dissipation area of ​​the core, and enhances heat exchange efficiency. It also simplifies assembly, strengthens the connection between the plug plate 2 and the oil chamber housing 1, reduces the deformation of the plug plate 2 caused by uneven stress, and improves the performance of the oil cooler, thereby also improving the performance of the vehicle.

[0094] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A structure for an oil chamber assembly of an oil cooler, characterized in that: It includes a tubular oil chamber housing (1) and a blocking plate (2) located at the end of the oil chamber housing (1); The oil chamber housing (1) includes a first arc-shaped plate (12) and a second arc-shaped plate (13) arranged opposite to each other, and two flat plates connected between the first arc-shaped plate (12) and the second arc-shaped plate (13). The two flat plates are arranged in parallel and together with the first arc-shaped plate (12), the second arc-shaped plate (13) and the blocking plate (2) define the inner cavity (20) of the oil chamber. The curvature of the first arc-shaped plate (12) is greater than that of the second arc-shaped plate (13). The first arc plate (12) is provided with a first insertion hole (101), and the second arc plate (13) is provided with a second insertion hole (102). The length of the first insertion hole (101) is greater than the length of the second insertion hole (102), and the blocking plate (2) is inserted into the second insertion hole (102) through the first insertion hole (101) and brazed together with the oil chamber housing (1).

2. The oil cooler oil chamber assembly structure according to claim 1, characterized in that: The middle portions of the first arc-shaped plate (12) and the second arc-shaped plate (13) both arch away from the inner cavity (20) of the oil chamber; and / or, The first arc plate (12) and the connection part of the two flat plates are provided with a first rounded corner (104), and the second arc plate (13) and the connection part of the two flat plates are provided with a second rounded corner (105).

3. The oil cooler oil chamber assembly structure according to claim 2, characterized in that: The second arc-shaped plate (13) is provided with a plurality of mounting holes (103) communicating with the inner cavity (20) of the oil chamber. The plurality of mounting holes (103) are arranged at intervals along the length direction of the oil chamber shell (1), and each mounting hole (103) is used to install the flat tube (3) of the oil cooler.

4. The oil cooler oil chamber assembly structure according to claim 1, characterized in that: At least one of the flat plates is provided with a connecting pipe (11) communicating with the inner cavity (20) of the oil chamber on its outer side. The connecting pipe (11) is used to be inserted and connected to the outer pipe body. The end of the connecting tube (11) abuts against the limiting part on the outer tube body, thereby limiting the insertion depth of the outer tube body.

5. The structure of the oil chamber assembly of the oil cooler according to claim 1, characterized in that: The blocking plate (2) is provided with a guide portion, which is used to guide the blocking plate (2) to be inserted into the second insertion hole (102); and / or, one of the blocking plate (2) and the oil chamber housing (1) is provided with a guide block (106), and the other of the blocking plate (2) and the oil chamber housing (1) is provided with a guide groove (201), and the guide block (106) is embedded in the guide groove (201) to guide the blocking plate (2) to be inserted from the first insertion hole (101) into the second insertion hole (102).

6. The oil cooler oil chamber assembly structure according to any one of claims 1-5, characterized in that: The blocking plate (2) has a first exposed portion (21) outside the first insertion hole (101) and a second exposed portion (22) outside the second insertion hole (102).

7. An oil cooler, characterized in that: It includes two oil chambers arranged at intervals, and a plurality of flat tubes (3) connected between the two oil chambers; At least one of the oil chambers adopts the oil cooler oil chamber assembly structure as described in any one of claims 1-6.

8. The oil cooler according to claim 7, characterized in that: The flat tube (3) includes a first flat tube housing (301) having a cavity, and a plurality of partitions (302) arranged at intervals in the cavity, the plurality of partitions (302) dividing the cavity into a plurality of first diversion channels (300).

9. The oil cooler according to claim 7, characterized in that: The flat tube (3) includes a second flat tube shell (306) and a rib plate (307) disposed in the second flat tube shell (306), and the two side walls of the second flat tube shell (306) in the thickness direction and the rib plate (307) are both wavy. The rib (307) is located between the two sidewalls and divides the flow channel in the second flat tube housing (306) into a plurality of second flow channels (300a), each of the second flow channels (300a) extending along the length direction of the second flat tube housing (306).

10. A vehicle, characterized in that: The vehicle is equipped with an oil cooler as described in claim 8 or 9.

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