A brazing fixture that helps improve surface defects of intercoolers
By designing a brazing fixture with connecting ribs and clamps, the problem of surface deformation of the heat dissipation square tube during the brazing process of the intercooler core was solved, achieving a smooth surface appearance and high yield of the intercooler, and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG FARET AUTO RADIATOR
- Filing Date
- 2025-06-20
- Publication Date
- 2026-07-31
AI Technical Summary
During the brazing process, existing intercooler cores are prone to surface defects such as imprints or dents on the heat dissipation square tubes, leading to rework and increased costs.
A brazing fixture was designed, including connecting ribs and clamps. Steps are provided on the inner side of the clamps to prevent the heat dissipation square tube from contacting the fixture. The intercooler core is clamped and fixed by a pad to ensure that the heat dissipation square tube is suspended and to avoid deformation under high temperature and high pressure.
It significantly improves the appearance defects of the intercooler surface, increases the product qualification rate, reduces rework costs, and has a simple structure and low cost.
Smart Images
Figure CN224574832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat dissipation equipment, and specifically to a brazing fixture that is beneficial for improving the surface defects of intercoolers. Background Technology
[0002] An intercooler is a gas radiator, typically used in conjunction with a turbocharger, and commonly found in turbocharged vehicles. The intercooler works as follows: high-temperature, high-pressure gas from the turbocharger enters the intercooler's intake manifold and flows through its internal pipes. During this flow, the intercooler absorbs the heat, and the cooled gas exits from the exhaust chamber before being delivered to the engine's intake. Therefore, the intercooler's function is to lower the engine's intake air temperature, increase the intake air volume, thereby increasing engine power, reducing fuel consumption, and decreasing the likelihood of engine knocking.
[0003] The automotive intercooler mainly consists of an intake chamber, an exhaust chamber, and a core. The core itself is primarily composed of a main plate, a support plate, heat dissipation tubing, and heat dissipation fins. During intercooler manufacturing, after assembling the core, it is placed in a brazing furnace to weld the various components together. During brazing, the core is placed on a brazing fixture, and both the core and the fixture are fed into the spray zone of the brazing furnace. Flux adheres to the surface of the brazing fixture. The temperature inside the brazing furnace is approximately 610℃. At this high temperature, the heat dissipation tubing of the core softens. For existing brazing fixtures, please refer to [reference needed]. Figures 1-3 The heat dissipation square tube 2 of the intercooler core 1 will be in direct contact with the brazing fixture 3 (the brazing fixture 3 supports the entire intercooler core 1 by supporting the heat dissipation square tube 2). Since the heat dissipation square tube 2 will be subjected to the supporting force of the brazing fixture 3, and the flux attached to the brazing fixture 3 will crystallize after brazing, imprints or dents will be formed on the surface of the heat dissipation square tube 2, resulting in poor appearance of the core.
[0004] For these appearance defects on the core surface, some existing improvement methods are to cover them up with paint or to eliminate them by polishing. These rework methods are time-consuming and labor-intensive; serious appearance defects may even require scrapping. Summary of the Invention
[0005] To overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a brazing fixture that is beneficial to improving the surface defects of the intercooler, which can solve the problem of poor appearance of the intercooler core leaving marks or dents on the surface during the brazing process.
[0006] This utility model is achieved through the following technical solution:
[0007] A brazing fixture that improves surface defects of an intercooler includes: a connecting rib and several clamps; the connecting rib passes through each clamp to connect and fix the clamps, and the clamps are arranged in parallel; each clamp has a first step on its two inner sides, and the first steps on both sides are suitable for supporting the core support plates on both sides of the intercooler core, so that there is a clearance between each heat dissipation square tube located between the core support plates and the clamp and that they do not come into contact with each other.
[0008] Furthermore, the brazing fixture that helps improve the surface defects of the intercooler also includes: two pads; a second step is provided on the two inner sides of the clamp, the bottom of the pad is fixedly placed on the second step, and the side of the pad is used to abut against the outer side of the intercooler core; the two pads together abut against the two outer sides of the core to clamp and fix the intercooler core.
[0009] Furthermore, the clamp is U-shaped, with the first step and the second step located at the corner position on the inner side of the clamp, and the height of the second step being greater than the height of the first step.
[0010] Furthermore, the gasket is U-shaped and includes a side plate, a top plate, and a bottom plate connected to the side plate; the bottom plate of the gasket is fixedly mounted on the second step structure so that the ends of the top plate and the bottom plate abut against the outer surface of the intercooler core.
[0011] Furthermore, the installation height of the connecting rib within the fixture is such that when the core support plate of the intercooler core is placed on the first step of the fixture, the main plates at both ends of the intercooler core abut against the top of the connecting rib.
[0012] Furthermore, there are two connecting ribs; the two connecting ribs are arranged in parallel and are respectively inserted into each of the clamps.
[0013] Furthermore, the connecting rib is an iron rod.
[0014] Furthermore, the clamp is made of steel plate.
[0015] Furthermore, the number of the clamps is three, and the three clamps are arranged in parallel.
[0016] Compared with the prior art, the beneficial effects that this utility model can achieve are as follows:
[0017] The connecting posts and various clamps are connected to form a stable whole. Before entering the brazing furnace, the intercooler core is placed inside the clamps of this brazing fixture. Specifically, the core support plates located on both sides of the intercooler core are placed on the first steps on both sides of the clamp, providing stable support for the intercooler core. At this time, there is a clearance between the heat dissipation square tubes located on both sides of the core support plates and the clamps, and they do not come into contact with each other. Since the heat dissipation square tubes are suspended and do not come into contact with the brazing fixture, they do not need to bear pressure and will not form flux crystals. Therefore, under the high temperature and high pressure of the brazing furnace, no marks or dents will form on the surface of the heat dissipation square tubes, significantly improving the appearance defects of the intercooler surface, increasing the product qualification rate, and avoiding the cost of rework due to appearance defects.
[0018] Meanwhile, this brazing fixture has a simple structure and low manufacturing cost, which is conducive to its widespread application. Attached Figure Description
[0019] Figure 1 The diagram shows the fit between the existing brazing fixture and the intercooler core.
[0020] Figure 2 The diagram shown is a schematic representation of the existing brazing fixture and the intercooler core from another perspective.
[0021] Figure 3 The diagram shows the fit between the existing brazing fixture and the heat dissipation square tube.
[0022] Figure 4 The figure shown is a perspective view of the brazing fixture of this utility model.
[0023] Figure 5 The image shown is a front view of the brazing fixture of this utility model.
[0024] Figure 6 The diagram shown is a structural schematic of the intercooler core.
[0025] Figure 7 The diagram shown is a schematic diagram of the brazing fixture and the intercooler core of this utility model.
[0026] Figure 8 The diagram shown is a schematic representation of the brazing fixture and the intercooler core from another perspective.
[0027] Figure 9 The diagram shows the fit between the brazing fixture and the heat dissipation square tube of this utility model.
[0028] In the diagram: 10. Brazing fixture; 11. Connecting rib; 12. Clamp; 121. First step; 122. Second step; 13. Spacer strip; 20. Intercooler core; 21. Core support plate; 22. Heat dissipation square tube; 23. Main plate. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0030] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0033] This utility model discloses a brazing fixture 10 that is beneficial to improving the surface defects of the intercooler. It is used to place the intercooler core 20 and send it into the brazing furnace together with the intercooler core 20 for brazing and fixing.
[0034] See Figures 4-5 This brazing fixture 10 includes connecting ribs 11 and several clamps 12. The connecting ribs 11 are simultaneously inserted into each clamp 12, connecting and fixing the clamps 12 together to form a stable integral structure. The clamps 12 are arranged in parallel, preventing the fixture from tilting. (See reference...) Figures 6-9The clamp 12 is specifically a U-shaped plate structure with first steps 121 on its two inner sides. The first steps 121 on both sides are suitable for supporting the core support plates 21 on both sides of the intercooler core 20. Due to the structural characteristics of the steps, there is a clearance between each heat dissipation square tube 22 located between the core support plates 21 and the clamp 12. The heat dissipation square tube 22 is suspended and does not contact the brazing fixture 10 at all. See Figure 9 .
[0035] Before entering the brazing furnace, the intercooler core 20 is placed inside the fixture 12 of the brazing tooling 10. Specifically, the core support plates 21 on both sides of the intercooler core 20 are placed on the first steps 121 on both sides of the fixture 12, which provide stable support for the intercooler core 20. At this time, there is a clearance between the heat dissipation square tubes 22 on both sides of the core support plates 21 and the fixture 12, and they do not come into contact with each other. Since the heat dissipation square tubes 22 are suspended and do not come into contact with the brazing tooling 10, they do not need to bear any pressure and will not form flux crystals on their surface. Therefore, even under the high temperature and pressure of the brazing furnace, the surface of the heat dissipation square tubes 22 will not form any marks or dents, and its surface remains smooth. This significantly improves the appearance defects of the intercooler surface, increases the product qualification rate, and avoids the cost of rework due to appearance defects.
[0036] Meanwhile, this brazing fixture 10 has a simple structure and low manufacturing cost, which is conducive to its widespread application.
[0037] Specifically, see Figures 4-5 , Figures 7-9 This utility model also includes two pads 13, and a second step 122 is provided at the U-shaped corner position inside the clamp 12. The height of the second step 122 is greater than the height of the first step 121. The bottom of the pad 13 is placed on the second step 122, and the second step 122 supports the pad 13, making the pad 13 vertically centered. The side of the pad 13 is used to abut against the outer side of the intercooler core 20. The two pads 13 together abut against the outer side of the core, thereby clamping and fixing the intercooler core 20. In this way, the core can be effectively prevented from expanding outward under high temperature and high pressure environment, so that the width of the core meets the size standard.
[0038] More specifically, see Figure 5 The pad 13 is U-shaped and includes a side plate, a top plate and a bottom plate connected to the side plate. The bottom plate of the pad 13 is placed on the second step 122 structure so that the ends of the top plate and the bottom plate abut against the outer surface of the intercooler core 20, thereby limiting the expansion of the core.
[0039] Specifically, see Figure 7The installation height of the connecting rib 11 within the clamp 12 is such that when the core support plate 21 of the intercooler core 20 is placed on the first step 121 of the clamp 12, the main plates 23 at both ends of the intercooler core 20 abut against the top of the connecting rib 11. In this way, the connecting rib 11 supports the main plates 23 at both ends of the intercooler core 20, thereby supporting the weight of the core and preventing it from moving downwards.
[0040] Specifically, there are two connecting ribs 11, which are arranged in parallel and pass through each clamp 12 to form a stable frame structure. More specifically, the connecting ribs 11 can be made of iron bars, while the clamps 12 can be made of steel plates.
[0041] Specifically, the number of clamps 12 is set to three, and the three clamps 12 are arranged in parallel to form a stable support for the intercooler core 20; of course, the specific number of clamps 12 is not limited and can be determined according to the specifications and dimensions of different intercoolers.
[0042] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A brazing tool for improving a surface defect of an intercooler, characterized by, include: The device includes a connecting rib and several clamps; the connecting rib passes through each clamp to connect and fix each clamp, and the clamps are arranged in parallel; each clamp has a first step on its two inner sides, and the first steps on both sides are suitable for supporting the core support plates on both sides of the intercooler core, so that there is a clearance between each heat dissipation square tube located between the core support plates and the clamp and that they do not come into contact with each other.
2. The brazing tool for improving the surface of a middle cooler according to claim 1, wherein The brazing fixture that helps improve the surface defects of the intercooler also includes: two pads; a second step is provided on the two inner sides of the fixture, the bottom of the pad is fixed on the second step, and the side of the pad is used to abut against the outer side of the intercooler core; the two pads together abut against the two outer sides of the core to clamp and fix the intercooler core.
3. The brazing tool for improving the surface of a middle cooler according to claim 2, wherein The clamp is U-shaped, with the first step and the second step located at the corner position on the inner side of the clamp, and the height of the second step being greater than the height of the first step.
4. The brazing tool for improving the surface of a middle cooler according to claim 2, wherein The gasket is U-shaped and includes a side plate, a top plate and a bottom plate connected to the side plate; the bottom plate of the gasket is fixedly mounted on the second step structure so that the ends of the top plate and the bottom plate abut against the outer surface of the intercooler core.
5. The brazing tool for improving the surface of a middle cooler according to claim 1, wherein The installation height of the connecting rib within the fixture is such that when the core support plate of the intercooler core is placed on the first step of the fixture, the main plates at both ends of the intercooler core abut against the top of the connecting rib.
6. The brazing tool for improving the surface of a middle cooler according to claim 1, wherein The number of connecting ribs is two; the two connecting ribs are arranged in parallel and are respectively inserted into each of the clamps.
7. The brazing tool for improving the surface of a middle cooler according to claim 1, wherein The connecting ribs are iron bars.
8. The brazing fixture as described in claim 1, which is beneficial for improving surface defects of the intercooler, is characterized in that... The clamp is made of steel plate.
9. The brazing tool for improving the surface of a middle cooler according to claim 1, wherein The number of clamps is three, and the three clamps are arranged in parallel.