Micro-channel condenser core assembly fixture

Abstract

The utility model discloses a micro-channel condenser core body assembling clamp which comprises a supporting table, an upper square pipe and a lower square pipe, a limiting block used for limiting one side of a coiled pipe micro-channel condenser core body to be assembled is arranged on the supporting table, and a clamping mechanism pushing the upper square pipe downwards is further arranged on the supporting table. A plurality of limiting nuts for positioning and limiting the lower square pipe are arranged on the supporting table, and a to-be-assembled coiled pipe micro-channel condenser core body is limited through the limiting blocks, clamped through the upper square pipe and the lower square pipe and then bound. The problems that in the traditional manual assembling process of the micro-channel core body, errors are large, the efficiency is low, and pseudo soldering is prone to occurring in the later period are solved, the production efficiency is improved, and the product quality is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of condenser production equipment, specifically to a microchannel condenser core assembly fixture. Background Technology

[0002] As a key component of air conditioning systems, the performance of microchannel serpentine condensers directly affects the efficiency of air conditioning operations. Due to differences in working environments, the shapes of serpentine tubes vary, making assembly using a standardized mold quite challenging.

[0003] The microchannel serpentine condenser core mainly consists of serpentine tubes, heat dissipation fins, and manifolds. Currently, the assembly of the microchannel serpentine condenser core relies primarily on manual operation. Furthermore, the assembly table lacks effective limiting devices, thus workers mainly rely on their experience to manually adjust pneumatic valves to compress the microchannel core. This assembly method makes the microchannel serpentine condenser core products highly susceptible to incomplete or faulty soldering during subsequent welding processes.

[0004] To improve assembly efficiency and product quality, a microchannel core assembly fixture is urgently needed to ensure precise positioning of the core during assembly and reduce errors caused by human operation. Furthermore, the fixture's structure must fully consider the diversity of microchannel serpentine tube condensers, adapting to different serpentine tube shapes through a flexible adjustment mechanism, thereby simplifying the assembly process and improving overall production efficiency. Summary of the Invention

[0005] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a microchannel condenser core assembly fixture, which solves the problems of large errors, low efficiency and easy occurrence of false welding in the traditional manual assembly process of serpentine tube microchannel cores. It not only improves production efficiency, but also significantly improves product quality.

[0006] To solve the aforementioned technical problems, this application adopts the following technical solution:

[0007] A microchannel condenser core assembly fixture includes a support platform, an upper tube, and a lower tube. The support platform is provided with a limiting block for limiting one side of the serpentine tube microchannel condenser core to be assembled. The support platform is also provided with a clamping mechanism for pushing the upper tube downward. The support platform is provided with a plurality of limiting nuts for fixing the lower tube. After the serpentine tube microchannel condenser core to be assembled is limited by the limiting block, it is then clamped by the upper tube and the lower tube for binding.

[0008] Preferably, the upper surface of the support platform is further provided with at least two downwardly recessed grooves.

[0009] Preferably, the support platform is also provided with several storage slots.

[0010] Preferably, the clamping mechanism includes a push-pull quick clamp clamping device and a tightening head disposed at the front end of the push-pull quick clamp clamping device, wherein the tightening head and the push-pull quick clamp clamping device are connected by a screw.

[0011] It can effectively eliminate the tightness error between the serpentine tube and the heat dissipation fins that may occur during manual assembly, ensuring the stability of welding. It not only avoids the problem of local cold welding / missing welding, but also reduces the skill requirements of operators during assembly, improves the fault tolerance rate of the production process, and thus significantly improves production efficiency and product quality.

[0012] Preferably, it also includes a support block, which is used to fill the irregular gaps in the serpentine tube microchannel condenser core to be assembled.

[0013] For irregularly shaped serpentine tubes, the use of support blocks for filling not only reduces the skill requirements of operators but also simplifies the assembly process, increases the tolerance for errors in production, and ensures the stability and accuracy of the core during assembly, thereby significantly improving production efficiency and product quality. Furthermore, the introduction of support blocks makes the assembly process more flexible and efficient, significantly improving overall production efficiency and product quality.

[0014] Preferably, the support block is formed by splicing together several square tubes of different lengths to form a stepped structure.

[0015] Preferably, the square tubes that make up the support block are fixed together by welding, the outer ends of the square tubes are flush, and the wall thickness of the square tubes is 1±0.2mm.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] By utilizing an assembly fixture to position and assemble the various components of the serpentine microchannel core, the assembly accuracy and consistency of the microchannel core are improved, effectively eliminating errors that may occur during manual assembly. This successfully solves the problems of large errors and low efficiency inherent in traditional manual assembly. The fixture not only improves production efficiency but also significantly enhances product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the completed assembly of the regular serpentine tube microchannel core in this utility model;

[0019] Figure 2 This is a schematic diagram showing the completed assembly of the irregular serpentine tube microchannel core in this utility model;

[0020] Figure 3 This is a schematic diagram of the clamping tool in this utility model;

[0021] Figure 4 This is a schematic diagram of the support block in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the pressure plate of this utility model;

[0023] Figure 6 This is a schematic diagram of the binding tool in this utility model;

[0024] In the diagram: 1. Clamping tool; 11. Support platform; 12. Upper tube; 13. Lower tube; 2. Microchannel core; 21. Side plate; 22. Serpentine tube; 23. Heat dissipation fins; 24. Manifold; 3. Storage slot; 4. Groove; 5. Clamping mechanism; 51. Push-pull quick clamp; 52. Top clamping head; 6. Limiting block; 7. Metal wire; 8. Protruding ring; 9. Limiting nut; 10. Support block; 30. Pressure plate; 40. Binding tool; 31. Flat plate; 32. Handheld part; 40. Binding tool; 41. Handle; 42. Remote lever. Detailed Implementation

[0025] The present application will now be further described in conjunction with 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.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0027] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship. Example 1:

[0028] like Figure 1 and Figure 3As shown, a microchannel condenser core assembly fixture includes a microchannel core 2 composed of two side plates 21, a serpentine tube 22, several heat dissipation fins 23, and two manifolds 24, and a clamping tool 1 for clamping and positioning the microchannel core 2. The clamping tool 1 includes a support platform 11, an upper tube 12, and a lower tube 13. The support platform 11 is provided with several limiting nuts 9 for positioning the lower tube 13, a receiving groove 3 for positioning the two manifolds 24, and a limiting block 6 for limiting one side of the serpentine tube 22. The upper end face of the support platform 11 is also provided with at least two downwardly recessed grooves 4. During the assembly process, the adjacent sides of the serpentine tube 22 are limited by the lower tube 13 and the limiting block 6. The outer sides of the side plates 21 are clamped by the upper tube 12 and the lower tube 13 respectively and fixed by metal wire 7.

[0029] The microchannel condenser core 22 mainly consists of two side plates 21, a serpentine tube 22, heat dissipation fins 23, and two manifolds 24. Before welding, the various components of the microchannel core 2 need to be positioned to ensure stable processing during welding. If the clamping force between the heat dissipation fins 23 and the serpentine tube 22 is insufficient, it can easily lead to incomplete welding or missing welds. Therefore, to solve this problem, a clamping tool 1 for clamping and positioning the microchannel core 2 is designed. When assembling the microchannel core 2, one side of the lower tube 13 is first pressed against the limiting nut 9. The limiting nut 9 positions the lower tube 13, thereby limiting the two sides of the serpentine tube 22 on the support platform 11 through the adjacent lower tube 13 and the limiting block 6, preventing misalignment when the operator places the serpentine tube 22. After the heat dissipation fins 23 and the side plate 21 are placed on the support platform 11, the upper tube 12 is placed on the upper side of the microchannel core 2. Finally, the operator can pass metal wires 7 through the bottom groove 4, tighten the metal wires 7 and wrap them together to achieve a ring binding of the microchannel core 2. The upper and lower sides of the microchannel core 2 are pressed together by the clamping force of the upper tube 12 and the lower tube 13. At the same time, the metal wires 7 themselves can also limit the upper and lower end faces of the microchannel core 2, so that the microchannel core 2 forms a tight structure after being assembled by the clamping tool 1. The clamping structure reduces the likelihood of incomplete or missed welds between the serpentine tube 22 and the heat dissipation fins 23 during subsequent welding processes. In the current process where manual assembly of the microchannel serpentine tube 22 condenser core is relied upon for welding, using an assembly fixture to position and assemble the various components of the microchannel core 2 effectively avoids the problem of insufficient positioning on existing assembly tables, improving the assembly accuracy and consistency of the microchannel core 2, thus enhancing assembly efficiency and product quality. It also effectively eliminates errors caused by human operation during manual assembly. This successfully solves the problems of large errors and low efficiency in traditional manual assembly. The fixture not only improves production efficiency but also significantly enhances product quality.

[0030] Both ends of the manifold 24 are higher than the serpentine tube 22. Therefore, after the support platform 11 forms a downwardly recessed storage groove 3, the protruding part of the manifold 24 can be stored through the storage groove 3, so as to avoid the serpentine tube 22 placed on the support platform 11 from being uneven.

[0031] One end of the groove 4 penetrates the side of the support platform 11, and the other end extends upward in an arc shape and is located on the platform surface of the support platform 11. When the metal wire 7 needs to be bound, it can be inserted forward through the side opening of the support platform 11. When it enters the other end, it can quickly pass through the end of the groove 4 that extends upward in an arc shape and exit the platform surface of the support platform 11, which is more efficient during operation.

[0032] One end of the support platform 11 is located on the side where the operator stands, i.e., the lower end, and the other end is the upper end. The outlet of the upper end extends at least 1 cm beyond the upper tube 12 in the unclamped state, generally 1 to 3 cm. Within this range, it can ensure that the metal wire 7 passes through the bottom of the entire microchannel core 2, and also avoid the problem that the metal wire 7 is easily blocked by the upper tube 12 after passing through, or that the metal wire 7 is too far away after passing through, which would make it inconvenient to pick up.

[0033] The groove 4 is usually made of 2 to 3 grooves, with a width and depth of about 5 mm. The metal wire 7 is usually made of a diameter of 1 mm or less, which can ensure that the metal wire 7 can pass through quickly and reduce the contact area after binding.

[0034] A further improvement is that the support platform 11 is also provided with a clamping mechanism 5 for pushing the upper tube 12 downward; the clamping mechanism 5 includes a push-pull quick clamp clamping device 51 and a top clamping head 52 located at the front end of the push-pull quick clamp clamping device 51, and the top clamping head 52 and the push-pull quick clamp clamping device 51 are connected by a screw.

[0035] During the binding process of the microchannel core 2 clamped by the upper tube 12 and the lower tube 13, manual operation is required, which can easily lead to errors. For example, during binding, different forces can cause problems such as over-clamping or insufficient clamping force on a certain product or wire. This is especially true when clamping irregular serpentine tubes 22, where the stepped irregular gaps can easily cause uneven pressure. Therefore, a clamping mechanism 5 is installed on the support platform 11 to push the upper tube 12 downwards. When the core 2 is assembled, after its position is adjusted, the clamping mechanism 5 can evenly push and position the upper tube 12 downwards, so that the upper tube 12 and the lower tube 13 maintain a stable limit on the microchannel core 2 during the binding process. When binding with metal wire 7, it is no longer necessary for the operator to pull it tightly, which effectively reduces the labor intensity of the operator. At the same time, it can effectively avoid the error that may occur during the assembly process due to operation reasons, so that the microchannel core 2 will not have local unclamped phenomenon when entering the welding process.

[0036] The clamping mechanism 5 consists of a push-pull quick-release clamping device 51 and a clamping head 52. This simplifies operation, increases efficiency, and improves stability when clamping and releasing the upper tube 12. The clamping head 52 and the push-pull quick-release clamping device 51 are connected by a screw. The screw allows for fine-tuning of the clamping head 52's position, adapting it to different sizes of serpentine tubes 22. Generally, the clamping head 52 is installed above the center of the positioned serpentine tube 22 via the push-pull quick-release clamping device 51. This ensures more even clamping force when clamping the upper tube 12. The cylindrical contact surface of the clamping head 52 effectively prevents changes in the contact surface after fine-tuning. Example 2:

[0037] The following improvements are made based on Example 1: Figure 2 and Figure 4 As shown, it also includes a support block 10, which fills the irregular gaps in the middle steps of the serpentine tube 22.

[0038] For a regular serpentine tube 22, the upper tube 12 and lower tube 13 can effectively and evenly clamp it. However, for an irregular serpentine tube 22, due to the irregular gaps in the middle steps, when binding with metal wire 7, the flat tubes on both sides may not be clamped tightly to the heat dissipation fins 23 in areas with gaps. This can lead to problems such as incomplete soldering or missing solder in the unclamped areas. To solve this problem, different support blocks 10 are matched to different heat dissipation fins 23, filling the gaps with support blocks 10. This not only reduces the skill requirements of the operators but also simplifies the assembly process, increases the fault tolerance of the production process, and ensures the stability and accuracy of the core during assembly, thereby significantly improving production efficiency and product quality. In addition, the introduction of support blocks 10 makes the assembly process more flexible and efficient, significantly improving overall production efficiency and product quality.

[0039] A further improvement is made to the support block 10, which is formed by splicing together several square tubes of different lengths to form a stepped structure.

[0040] The design of support block 10 fully considers the diversity of the intermediate step gaps in the serpentine tube 22. By combining square tubes of different shapes and sizes, it can perfectly adapt to various complex stepped structures, and is lightweight and highly reusable. Furthermore, the use of support block 10 reduces the reliance on operator skill levels and minimizes the impact of human factors on product quality.

[0041] A further improvement is made in that the square tubes that make up the support block 10 are fixed together by welding, the outer ends of the square tubes are flush, and the wall thickness of the square tubes is 1±0.2mm.

[0042] Because the serpentine tube 22 has many gaps, the support block 10 is welded into a whole by square tubes with a wall thickness of 1±0.2mm. It is not easy to fall off during the assembly process, and the installation is more convenient. Moreover, the overall weight is lighter. Example 3:

[0043] The specific operation for positioning each component of the microchannel core 2 before welding is as follows:

[0044] Step 1: The operator places the support platform 11 on the worktable and prepares the necessary tools, including the upper tube 12, the lower tube 13, a roll of metal wire 7, metal shears, a pressure plate 30, and a binding tool 40; if the irregular serpentine tube 22 is to be assembled, the corresponding support block 10 also needs to be prepared.

[0045] The second step is to place the upper tube 12 and the lower tube 13 on the support platform 11, so that one side of the lower tube 13 is in contact with the limiting nut 9, while ensuring that the gap between the upper tube 12 and the lower tube 13 is greater than that of the serpentine tube 22 in normal condition. This step ensures that when the side plate 21 is placed later, there will be no problem that it cannot stand upright due to insufficient thickness, and the installation operation will be faster.

[0046] The third step is to place the various components that make up the microchannel core 2 between the upper tube 12 and the lower tube 13. The two side plates 21 can be supported by contacting the inner side of the upper tube 12 and the lower tube 13. Placing the side plates 21 first allows the serpentine tube 22 and the heat dissipation fins 23 to be adjusted directly after placement. In particular, the serpentine tube 22 can be positioned directly, avoiding the need to adjust its vertical position when placing the side plates 21 later.

[0047] Fourth step: Insert the two manifolds 24 into the two ends of the serpentine tube 22 respectively, and then place them on the support platform 11; so that the serpentine tube 22 is located between the two side plates 21, and then adjust the approximate relative position. Finally, fill the gaps of the serpentine tube 22 and the space between the serpentine tube 22 and the side plates 21 with the heat dissipation fins 23, and make preliminary adjustments to the relative position.

[0048] Step 5: Perform different operations according to the shape of the serpentine tube 22. When assembling an irregularly shaped serpentine tube 22, the support block 10 needs to be filled into the irregular gaps on the serpentine tube 22 to ensure that the force is even when clamping it later. When assembling a regular serpentine tube 22, you can directly proceed to step 6.

[0049] Step 6: Adjust the left and right positions of the upper tube 12 and the lower tube 13, and drive the clamping head 52 to move the upper tube 12 downwards and initially clamp it by pushing and pulling the quick clamp clamping device 51. After the initial clamping, it is easy to determine when the heat dissipation fins 23 are partially warped and then press them back, and ensure that the heat dissipation fins 23 will not warp again after pressing back, effectively avoiding the phenomenon of poor welding or missing welding on both sides of the heat dissipation fins 23, and ensuring the accuracy of the welding position.

[0050] Step 7: Tap the upper end face of the serpentine tube 22 with the pressure plate 30 to ensure that the fins are installed in place; tapping with the pressure plate 30 makes the bottom of the fins contact the support platform 11, which can achieve large-area quick return to position and effectively solve the problems of low efficiency and cumbersome operation of manual pressing; after confirming that the heat dissipation fins 23 are all installed in place, continue to drive the push-pull quick clamp clamp 51 until it is locked, so that the upper tube 12 moves downward through the clamping head 52 to the finger-pressed state;

[0051] Step 8: The operator passes the metal wire 7 through the groove 4 at the bottom of the microchannel core 2 and pulls it back from above, securing it to the outside of the lower tube 13. The wire is then cut with metal shears, ensuring the binding opening is not on the welding surface. Finally, the push-pull quick-clamp clamp 51 is reset, and the microchannel core 2 is clamped and secured by the clamping tool 1 before welding. This method ensures greater flatness of multiple products during stacking, preventing loosening during movement. The metal wire 7 effectively prevents deformation and loosening during welding. After welding, simply cutting the metal wire 7 separates the microchannel core 2 from the components. Other parts can be reused, while the metal wire 7 can be recycled, effectively reducing production costs, improving welding efficiency, and enabling continuous mass production. The entire operation is less prone to errors due to operational reasons. Example 4:

[0052] like Figure 5 As shown, when the heat dissipation fins 23 are pressed by the pressure plate 30, the length and width of the pressure plate 30 are both larger than the serpentine tube 22, which can quickly return all the heat dissipation fins 23 to their positions, resulting in higher operating efficiency. Moreover, the flat plate 31 is made of plastic or rubber materials, which can ensure flatness and reduce the overall weight. In particular, when rubber is used, it also has a certain degree of elasticity, so even if there is a local dent, it will not affect the operation. The handle 32 is a cylindrical roller structure. Example 5:

[0053] like Figure 6As shown, when binding the metal wire 7, a folded double-strand wire is used for binding, which provides better stability and is easier to operate with tools. In particular, the entire operation also includes a binding tool 40 for binding the metal wire 7. The binding tool 40 can pull back one end of the protruding double-strand metal wire 7 and quickly tighten it by rotating it, so that the folded end of the tightened metal wire 7 forms a circular convex ring 8. When the product needs to be removed from the welding furnace after welding, the circular convex ring 8 can be used as a hook force point to pull it, so that it can be moved without contacting the product.

[0054] The binding tool 40 includes a lever 42 with a hook at the front end and a handle 41 installed at the end of the lever 42. The handle 41 and the lever 42 are connected by a bearing. By driving the handle 41, the lever 42 can drive the hook to rotate. The hook hooks the metal wire 7 and pulls it. By rotating the hook, the two ends of the metal wire 7 can be quickly twisted together, making the operation more convenient. During the tightening and twisting of the metal wire 7, it is no longer necessary to directly rotate the metal wire 7 by hand, making the operation more convenient and safer. After the rotation is completed, the end of the metal wire 7 can form a circular convex ring 8 through the hook.

[0055] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A microchannel condenser core assembly fixture, characterized by: The assembly includes a support platform (11), an upper tube (12), and a lower tube (13). The support platform (11) is provided with a limiting block (6) for limiting one side of the serpentine tube microchannel condenser core to be assembled. The support platform (11) is also provided with a clamping mechanism (5) for pushing the upper tube (12) downward. The support platform (11) is provided with several limiting nuts (9) for fixing and limiting the lower tube (13). After the serpentine tube microchannel condenser core to be assembled is limited by the limiting block (6), it is then clamped by the upper tube (12) and the lower tube (13) for binding.

2. A microchannel condenser core assembly fixture according to claim 1, wherein: The upper surface of the support platform (11) is also provided with at least two downward recessed grooves (4).

3. A microchannel condenser core assembly fixture according to claim 1 wherein: The support platform (11) is also provided with several storage slots (3).

4. A microchannel condenser core assembly fixture according to claim 1 wherein: The clamping mechanism (5) includes a push-pull quick clamp clamp (51) and a top clamping head (52) located at the front end of the push-pull quick clamp clamp (51). The top clamping head (52) and the push-pull quick clamp clamp (51) are connected by a screw.

5. A microchannel condenser core assembly fixture according to any one of claims 1-4, wherein: It also includes a support block (10), which is used to fill the irregular gaps in the core of the serpentine tube microchannel condenser to be assembled.

6. A microchannel condenser core assembly fixture according to claim 5 wherein: The support block (10) is a stepped structure formed by splicing together several square tubes of different lengths.

7. A microchannel condenser core assembly fixture according to claim 6 wherein: The square tubes that make up the support block (10) are fixed together by welding. The outer ends of the square tubes are flush and the wall thickness of the square tubes is 1±0.2mm.

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