Differential flexible clamp for plate-fin heat exchanger core

Abstract

The utility model relates to a differential flexible clamp for a plate-fin heat exchanger core, which comprises a pipe body and a fixing component, and the pipe body is movably matched with the fixing component; the fixing assemblies comprise limiting pieces and adjusting pieces, the limiting pieces are connected to the adjusting pieces, the fixing assemblies are evenly distributed based on the length of the pipe body, and the limiting pieces are symmetrically arranged relative to the center of the adjusting pieces. According to the clamp composed of the pipe body and the fixing assembly, the relative position of the fixing assembly on the pipe body is adjusted, so that the overall stress of the clamp is uniform, the clamp can be adaptively adjusted according to the lengths of different pipe bodies, and the problem that a traditional clamp is single in application is solved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger manufacturing and assembly technology, and in particular to a differential flexible clamp for plate-fin heat exchanger core. Background Technology

[0002] As an essential tool for assembling aluminum plate-fin heat exchanger cores, the assembly fixture is specifically designed to clamp and secure the heat exchanger core, ensuring its stability and accuracy during assembly, machining, and brazing. During assembly and brazing, minute gaps may occur between the various components of the core due to differences in the thermal expansion coefficients of the materials. The assembly fixture provides some gap compensation to ensure that the brazing filler metal fully fills these gaps, forming a robust connection.

[0003] However, traditional upper clamps are mostly grid-type, which still have the following problems in practical applications:

[0004] (a) The inner surface of the cast mesh is rough and the structure of the casting is relatively loose, with many pores inside. It is easy to absorb dirt and moisture from the air. These dirt and moisture will release harmful gases during brazing, causing pollution to the core.

[0005] (ii) Traditional fixtures use solid castings for the ribs, which are heavy overall. They absorb a lot of heat and consume a lot of energy during brazing, which can easily cause a large temperature difference between the inside and outside of the core component and reduce the brazing fusion rate of the core. Moreover, when the brazing heating stops, the heat dissipation is slow and can easily cause the core to deform.

[0006] (iii) Traditional clamps can cause uneven stress on the core when pre-tightening the core, resulting in uneven gaps between the core parts and potentially causing localized detachment during core brazing. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a differential flexible clamp for plate-fin heat exchanger cores to solve one or more problems in the prior art.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] A differential flexible clamp for a plate-fin heat exchanger core, the clamp comprising a tube body and a fixing assembly, the tube body being movably fitted to the fixing assembly; the fixing assembly comprising a limiting member and an adjusting member, the limiting member being connected to the adjusting member.

[0010] Furthermore, the limiting member has a positioning groove on its edge near the adjusting member.

[0011] Furthermore, the tube body is tightly disposed within the positioning groove, and a portion of it abuts against the adjusting member.

[0012] Furthermore, the height of the positioning groove along the first direction is adapted to the end face of the tube body.

[0013] Furthermore, the positioning groove has a first surface on both sides along its length, and the first surface fits the shape of the tube body.

[0014] Furthermore, the fixing components are evenly distributed based on the length of the tube, and the limiting components are symmetrically arranged about the center of the adjusting components.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] (i) The fixture of this utility model adopts tubes integrated together and set in the fixed component. The surface is dense and has low adsorption, which makes it difficult to adsorb air and impurities in the brazing furnace, reducing the pollution of the core during brazing and helping to improve the quality of vacuum brazing products.

[0017] (ii) This new type of fixture adopts a flexible design, is relatively lightweight, and absorbs less heat, thus avoiding local deformation of the core caused by excessive heat absorption. At the same time, it can also reduce the heat consumption of the vacuum brazing furnace and improve the heat transfer efficiency of the product. In addition, because the overall weight of this new type of fixture is relatively light, it is also convenient for workers to handle, reducing the labor intensity of workers.

[0018] (iii) This new type of clamp uses tubes and assemblies together to flexibly contact the surface of the heat exchanger, which can play a role in flexible compensation; at the same time, it increases the number of pressing points on the surface of the heat exchanger, making the pressing force more uniform and improving the brazing quality of the product.

[0019] (iv) The clamp designed in this novel design, consisting of a tube body and a fixing component, can make the clamp uniformly stressed by adjusting the relative position of the fixing component to the tube body, and can be adapted to different tube lengths, thus solving the problem of the single applicability of traditional clamps. Attached Figure Description

[0020] Figure 1 A schematic diagram of the structure of a differential flexible clamp for a plate-fin heat exchanger core according to an embodiment of the present invention is shown.

[0021] Figure 2 This invention illustrates a side view of the structure of a differential flexible clamp for a plate-fin heat exchanger core according to an embodiment of the present invention. Figure I .

[0022] Figure 3 This invention illustrates a side view of the structure of a differential flexible clamp for a plate-fin heat exchanger core according to an embodiment of the present invention. Figure II .

[0023] Figure 4 This diagram illustrates the structure of a fixing assembly for a differential flexible clamp used for a plate-fin heat exchanger core, according to an embodiment of the present invention.

[0024] The attached diagram is labeled as follows: 1. Tube body; 2. Fixing component; 201. Limiting component; 2011. Positioning groove; 20111. First surface; 202. Adjusting component. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a differential flexible clamp for a plate-fin heat exchanger core, in conjunction with the accompanying drawings and specific embodiments, is provided. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, used only to facilitate and clearly illustrate the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only for illustrative purposes and to those skilled in the art, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0026] Please see Figures 1 to 4 The heat exchanger core uses a differential flexible clamp in this embodiment. The clamp includes a tube body 1 and a fixing component 2, wherein the tube body 1 is movably fitted to the fixing component 2. The fixing component 2 includes a limiting member 201 and an adjusting member 202, wherein the limiting member 201 is connected to the adjusting member 202.

[0027] Furthermore, the limiting member 201 has a positioning groove 2011 formed on its edge near the adjusting member 202. The positioning groove 2011 is adapted to the end face of the tube body 1 along a first direction. In this embodiment, the first direction is perpendicular to the plane of the adjusting member 202. Figure 2 The state shown is vertical. The tube 1 is tightly disposed within the positioning groove 2011, and a portion of the tube 1 abuts against the adjusting member 202. Preferably, "tightly disposed" means that while the tubes 1 are uniformly disposed, they also abut against each other, and each tube 1 is also clearance-fitted to the surface of the positioning groove 2011 and the surface of the adjusting member 202.

[0028] Furthermore, the positioning groove 2011 has a first surface 20111 on both sides along its length, and the first surface 20111 conforms to the shape of the tube body 1. In this embodiment, the tube body 1 is a circular tube, and the first surface 20111 is preferably an arc surface to fit the tube body 1 and avoid damage to the tube body 1 in actual use. In other embodiments, the tube body 1 can also be other shapes, and the first surface 20111 is correspondingly provided. Preferably, the tube body 1 is made of a flexible material, so that when it comes into contact with the heat exchanger product, it plays a flexible pressing role, which can generate sufficient flexibility compensation without damaging the product surface and improve the brazing quality of the heat exchanger product.

[0029] Furthermore, the fixing components 2 are evenly distributed based on the length of the tube body 1, and the limiting members 201 are symmetrically arranged about the center of the adjusting members 202. Preferably, the limiting members 201 and the adjusting members 202 are fixedly connected and move as a single unit. In this embodiment, as... Figure 1 Four fixing components 2 are provided to adapt to the length of the tube body 1. The fixing components 2 are adjusted by moving them along the length of the tube body 1 to ensure the uniformity of the force on the clamp during use.

[0030] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A differential flexible clamp for a plate-fin heat exchanger core, characterized in that: The clamp includes a tube and a fixing component, the tube being movably fitted into the fixing component; the fixing component includes a limiting member and an adjusting member, the limiting member being connected to the adjusting member.

2. The differential flexible clamp for a plate-fin heat exchanger core as described in claim 1, characterized in that: The limiting member has a positioning groove on its edge near the adjusting member.

3. The differential flexible clamp for a plate-fin heat exchanger core as described in claim 2, characterized in that: The tube body is tightly disposed within the positioning groove, and a portion of it abuts against the adjusting member.

4. The differential flexible clamp for a plate-fin heat exchanger core as described in claim 3, characterized in that: The positioning groove is adapted to the end face of the tube body at a height along the first direction.

5. The differential flexible clamp for a plate-fin heat exchanger core as described in claim 4, characterized in that: The positioning groove has a first surface on both sides along its length, and the first surface fits the shape of the tube body.

6. The differential flexible clamp for a plate-fin heat exchanger core as described in claim 5, characterized in that: The fixing components are evenly distributed based on the length of the tube, and the limiting components are symmetrically arranged about the center of the adjusting components.

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