Liquid inlet and outlet pipe reinforcing structure of micro-channel heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, particularly relates to a liquid inlet and outlet pipe reinforcing structure of a micro-channel heat exchanger, and solves the problem that the connection between a liquid inlet and outlet pipe and a collecting pipe is easy to break. The liquid inlet and outlet pipe reinforcing structure of the micro-channel heat exchanger comprises a supporting base fixed to a collecting pipe, an upper clamping block and a lower clamping block are detachably arranged on the supporting base through a clamping structure, and a clamping opening with the inner diameter matched with the outer diameter of a liquid inlet and outlet pipe is formed between the upper clamping block and the lower clamping block. And the liquid inlet and outlet pipe is clamped in the clamping opening. The connection reinforcing effect between the liquid inlet and outlet pipe and the collecting pipe is achieved, and connection fracture is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and specifically relates to a reinforcement structure for the inlet and outlet liquid pipes of a microchannel heat exchanger. Background Technology

[0002] Microchannel heat exchangers are mostly composed of manifolds, multi-channel flat tubes, and louvered fins. Inlet and outlet pipes are connected to the manifolds for inputting or outputting the heat exchange medium.

[0003] In existing technologies, most inlet and outlet pipes are directly connected to the corresponding interfaces of the manifold without any auxiliary reinforcement structures between them. This can easily lead to the connection between the inlet / outlet pipes and the manifold breaking, and leakage of the heat exchange medium may cause unnecessary losses or even safety hazards. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a reinforced structure for the inlet and outlet pipes of a microchannel heat exchanger.

[0005] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0006] A reinforcement structure for the inlet and outlet pipes of a microchannel heat exchanger includes a support base fixed to a manifold. An upper clamping block and a lower clamping block are detachably provided on the support base via a clamping structure. A clamping opening with an inner diameter adapted to the outer diameter of the inlet and outlet pipes is formed between the upper and lower clamping blocks, and the inlet and outlet pipes are clamped in the clamping opening.

[0007] This utility model's inlet / outlet pipe reinforcement structure is mainly used to reinforce the inlet / outlet pipes on a manifold, reducing the risk of breakage. A clamping opening is formed between the upper and lower clamping blocks, which clamps the inlet / outlet pipes. Simultaneously, the upper and lower clamping blocks are mounted on a support base, further securing the inlet / outlet pipes to the manifold and preventing breakage. Furthermore, the connection between the upper and lower clamping blocks and the support base is flexible and detachable, facilitating disassembly, assembly, and replacement of clamping blocks with appropriate opening diameters. The connection between the inlet / outlet pipes and the manifold is common knowledge and will not be elaborated upon further.

[0008] As an optimization, the support base is located on the side of the interface on the manifold for connecting the inlet and outlet pipes. The height of the clamp is adapted to the height of the section of the inlet and outlet pipe that is parallel to the manifold after bending. That is, after the inlet and outlet pipes are bent to 90 degrees, their horizontal section is clamped by the clamp.

[0009] In the above-mentioned reinforcement structure for the inlet and outlet liquid pipes of the microchannel heat exchanger, the clamping structure includes a bottom plate and a top plate. The bottom plate is fixedly connected to the support base, and the upper clamping block and the lower clamping block are clamped between the bottom plate and the top plate. The bottom plate and the top plate are fixed together by a detachable component.

[0010] The base plate, lower clamping block, upper clamping block, and top plate are arranged in sequence. The detachable components can close and fix the top plate and the base plate together to achieve the effect of clamping the upper clamping block and the lower clamping block onto the inlet and outlet pipes, making disassembly and assembly convenient.

[0011] In the above-mentioned reinforcement structure of the inlet and outlet pipes of the microchannel heat exchanger, the detachable component includes at least two fixing bolts distributed on both sides of the clamp. The shank of the fixing bolt passes through the connecting holes on the top plate, the upper clamping block, the lower clamping block and the bottom plate in sequence. A nut is engaged on the threaded section at the front end of the fixing bolt. The inner end face of the nut abuts against the bottom plate, or the threaded section engages with the internal thread of the connecting hole on the bottom plate.

[0012] The detachable component is achieved by two sets of fixing bolts. The fixing bolts pass through the top plate, upper clamping block, lower clamping block and bottom plate. The inner end face of the bolt head abuts against the top plate. The connecting hole on the bottom plate can be a smooth hole. The threaded section at the front end of the fixing bolt can pass through the smooth hole and be tightened by a nut. Alternatively, the connecting hole on the bottom plate can also be a threaded hole. The threaded section of the fixing bolt directly engages with the threaded hole to achieve fixation.

[0013] In the above-mentioned reinforcement structure of the inlet and outlet pipes of the microchannel heat exchanger, the detachable component includes at least two T-shaped shafts distributed on both sides of the clamp. The shafts of the T-shaped shafts pass through the connecting holes on the top plate, the upper clamping block, the lower clamping block, and the bottom plate in sequence. The front end of the shaft has at least one radially penetrating limiting through hole, and a pin is inserted in one of the limiting through holes. The pin and the head of the T-shaped shaft abut against the top surface of the top plate and the bottom surface of the bottom plate, respectively.

[0014] As a parallel solution, the detachable component can also be achieved through two sets of T-shaped shafts. The cross-section of the T-shaped shaft passing through the axis is T-shaped, and the outer diameter of its head is larger than the inner diameter of the connecting hole. The shaft body passes through each connecting hole, and the lower end is exposed. A limiting through hole is radially set on the lower end. The pin is inserted into the limiting through hole to close and fix the bottom plate and the top plate. There are multiple limiting through holes to accommodate upper and lower clamping blocks of different heights, thus improving compatibility.

[0015] As another feasible solution, detachable components can also be achieved using rivets.

[0016] In the above-mentioned reinforcement structure for the inlet and outlet liquid pipes of the microchannel heat exchanger, the bottom surface of the base plate is provided with positioning holes, and the end of the support base is inserted into the positioning holes and fixed.

[0017] The positioning holes can be used to fix the support base and the base plate in a fixed position, which facilitates subsequent fixing.

[0018] In the above-mentioned reinforcement structure for the inlet and outlet pipes of the microchannel heat exchanger, the positioning hole is a circular threaded hole, and the end of the support base is circular and has an external thread, with the external thread and the threaded hole meshing and connected; or the positioning hole is a smooth hole, and the end of the support base is inserted into the positioning hole and fixed by welding or bonding.

[0019] The connection between the positioning hole and the support base can be achieved through threads, which allows for flexible disassembly. Alternatively, after the support base and the positioning hole are inserted and positioned, the support base can also be directly welded or bonded to the positioning hole for fixation, which provides higher structural strength and stability.

[0020] In the above-mentioned reinforcement structure for the inlet and outlet pipes of the microchannel heat exchanger, the bottom surface of the support base is provided with an upper pin groove extending radially along the positioning hole, and the end of the support base is provided with a lower pin groove corresponding to the upper pin groove. A plate-shaped anti-rotation pin is inserted between the upper pin groove and the lower pin groove.

[0021] In order to position and limit the rotation angle of the support base and the positioning hole, strip-shaped upper and lower pin grooves are provided on the bottom surface and the end of the support base. The length direction of the two pin grooves is parallel and they are joined together to form a square pin hole. The anti-rotation pin is inserted into the pin hole, which can in particular prevent the threaded end of the support base from being screwed out of the threaded positioning hole, thus ensuring a stable connection.

[0022] In the above-mentioned reinforcement structure for the inlet and outlet pipes of the microchannel heat exchanger, the upper and lower clamping blocks are provided with semi-circular arc openings on their opposite surfaces, and the two arc openings are arranged opposite each other to form the clamping opening, and an elastic anti-slip layer is provided inside the arc opening.

[0023] The upper and lower clamps are U-shaped, with one side recessed to form a semi-circular arc. To prevent relative sliding between the clamp and the inlet / outlet pipe, an elastic anti-slip layer is provided inside the arc. The elastic anti-slip layer can be made of rubber or silicone. It can deform elastically when compressed, and its size after compression is adapted to the outer diameter of the inlet / outlet pipe, ensuring sufficient pressure while avoiding damage to the inlet / outlet pipe.

[0024] In the above-mentioned reinforcement structure for the inlet and outlet pipes of the microchannel heat exchanger, a positioning protrusion and a positioning groove are respectively provided on the bottom surface of the upper clamping block and the top surface of the lower clamping block, and the positioning protrusion extends into the positioning groove.

[0025] The length direction of the positioning protrusion and the depth direction of the positioning groove are consistent with the direction in which the upper clamping block and the lower clamping block close. The positioning protrusion is inserted into the positioning groove to achieve initial positioning, which facilitates the passage of fixing bolts or T-shaped shafts of the detachable structure, improving installation efficiency. Moreover, the sizes of the positioning protrusion and the positioning groove are adapted to each other, and the two fit together perfectly, so that the radial offset is very small, further ensuring that the upper clamping block and the lower clamping block are aligned.

[0026] In the above-mentioned reinforcement structure for the inlet and outlet liquid pipes of the microchannel heat exchanger, the support base is cylindrical, and the side of the support base is provided with an arc-shaped interface whose inner diameter is adapted to the outer diameter of the manifold. The manifold is embedded in the arc-shaped interface and fixed by welding or bonding.

[0027] The support base is cylindrical, and the interface on its side is adapted to the shape and outer diameter of the manifold. The interface is attached to the manifold and fixed by welding or bonding, so that the connection is stable.

[0028] Compared with the prior art, the present invention has the following main advantages:

[0029] 1. The upper and lower clamping blocks of this inlet and outlet pipe reinforcement structure form a clamping opening, which clamps onto the inlet and outlet pipes. At the same time, the upper and lower clamping blocks are set on the support base to further connect and fix the inlet and outlet pipes to the manifold, preventing the connection between the inlet and outlet pipes and the manifold from breaking. Moreover, the connection between the upper and lower clamping blocks and the support base is flexible and detachable, which facilitates disassembly, assembly, and replacement of clamping blocks with the corresponding clamping opening diameter.

[0030] 2. The bottom plate, lower clamping block, upper clamping block, and top plate are arranged in sequence. The detachable components can close and fix the top plate and the bottom plate together to achieve the effect of clamping the inlet and outlet liquid pipes with the upper clamping block and the lower clamping block. It is easy to disassemble and assemble.

[0031] 3. The connection between the positioning hole and the support base is achieved through threads, which allows for flexible disassembly. To position and limit the rotation angle of the support base and the positioning hole, a square pin hole is provided between the support base and its end. An anti-rotation pin is inserted into this pin hole, which in particular prevents the threaded end of the support base from being screwed out of the threaded positioning hole, ensuring a stable connection.

[0032] 4. The upper and lower clamping blocks are U-shaped, with one side recessed to form a semi-circular arc. To prevent relative sliding between the clamping opening and the inlet / outlet pipe, an elastic anti-slip layer is provided inside the arc. Moreover, the elastic anti-slip layer can elastically deform when compressed, and the compressed size is adapted to the outer diameter of the inlet / outlet pipe, thus preventing damage to the inlet / outlet pipe. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure provided by this utility model;

[0034] Figure 2 yes Figure 1 Enlarged detail view of point A in the middle;

[0035] Figure 3 This is a schematic diagram of the structure of the inlet / outlet pipe reinforcement structure provided by this utility model;

[0036] Figure 4 This is a cross-sectional schematic diagram of the inlet / outlet pipe reinforcement structure provided by this utility model (Example 1);

[0037] Figure 5 This is a schematic diagram of the structure of the base plate provided by this utility model;

[0038] Figure 6 This is a cross-sectional schematic diagram of the inlet / outlet pipe reinforcement structure provided by this utility model (Example 2).

[0039] In the figure, the components are: 1. manifold; 2. support base; 3. clamping structure; 4. upper clamping block; 5. lower clamping block; 6. inlet / outlet pipe; 7. clamping port; 8. bottom plate; 9. top plate; 10. detachable component; 11. fixing bolt; 12. connecting hole; 13. threaded section; 14. T-shaped shaft; 16. limiting through hole; 17. pin; 18. positioning hole; 21. upper pin groove; 22. lower pin groove; 23. anti-rotation pin; 24. arc opening; 25. elastic anti-slip layer; 26. positioning protrusion; 27. positioning groove; 28. arc-shaped mating interface. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] Example 1

[0042] Specific implementation examples Figure 1-5 As shown, the inlet and outlet pipe reinforcement structure of this microchannel heat exchanger includes a support base 2 fixed on the manifold 1. An upper clamping block 4 and a lower clamping block 5 are detachably provided on the support base 2 through a clamping structure 3. A clamping opening 7 with an inner diameter that is adapted to the outer diameter of the inlet and outlet pipe 6 is formed between the upper clamping block 4 and the lower clamping block 5. The inlet and outlet pipe 6 is clamped in the clamping opening 7.

[0043] Specifically, this inlet / outlet pipe reinforcement structure is mainly used to reinforce the inlet / outlet pipe 6 on the manifold 1 to reduce the risk of breakage. A clamping opening 7 is formed between the upper clamping block 4 and the lower clamping block 5. The clamping opening 7 is clamped onto the inlet / outlet pipe 6. At the same time, the upper clamping block 4 and the lower clamping block 5 are set on the support base 2 to achieve further connection and fixation between the inlet / outlet pipe 6 and the manifold 1, avoiding the breakage of the connection between the inlet / outlet pipe 6 and the manifold 1. Moreover, the connection between the upper clamping block 4 and the lower clamping block 5 and the support base 2 is flexible and detachable, which facilitates disassembly, assembly, and replacement of clamping blocks with the corresponding clamping opening 7 diameter.

[0044] like Figure 2 , 3 As shown in Figure 4, the clamping structure 3 includes a base plate 8 and a top plate 9. The base plate 8 is fixedly connected to the support base 2. The upper clamping block 4 and the lower clamping block 5 are clamped between the base plate 8 and the top plate 9. The base plate 8 and the top plate 9 are fixed together by a detachable assembly 10. The detachable assembly 10 includes two fixing bolts 11 distributed on both sides of the clamping opening 7. The rod of the fixing bolt 11 passes through the top plate 9, the upper clamping block 4, the lower clamping block 5, and the connecting hole 12 on the base plate 8 in sequence. The threaded section 13 at the front end of the fixing bolt 11 engages with the internal thread of the connecting hole 12 on the base plate 8.

[0045] Specifically, the base plate 8, lower clamping block 5, upper clamping block 4, and top plate 9 are arranged in sequence. The detachable component 10 closes and fixes the top plate 9 and the base plate 8, thereby clamping the upper clamping block 4 and the lower clamping block 5 onto the inlet / outlet liquid pipe 6, making disassembly and assembly convenient. The detachable component 10 is achieved by two sets of fixing bolts 11. The fixing bolts 11 pass through the top plate 9, the upper clamping block 4, the lower clamping block 5, and the base plate 8. The inner end face of the bolt head abuts against the top plate 9. The connecting hole 12 on the base plate 8 is a threaded hole, and the threaded section 13 of the fixing bolt 11 directly engages with the threaded hole to achieve fixation.

[0046] like Figure 4 , 5 As shown, the bottom surface of the base plate 8 is provided with a positioning hole 18, and the end of the support base 2 is inserted into the positioning hole 18 and fixed. The positioning hole 18 is a circular threaded hole, and the end of the support base 2 is circular and provided with external threads, which mesh with the threaded hole. The bottom surface of the support base 2 is provided with an upper pin groove 21 extending radially along the positioning hole 18, and the end of the support base 2 is provided with a lower pin groove 22 corresponding to the upper pin groove 21. A plate-shaped anti-rotation pin 23 is inserted between the upper pin groove 21 and the lower pin groove 22.

[0047] Specifically, the positioning hole 18 can position the support base 2 and the base plate 8, facilitating subsequent fixing. The connection between the positioning hole 18 and the support base 2 is achieved through threads, which allows for flexible disassembly. To position and limit the rotation angle of the support base 2 and the positioning hole 18, strip-shaped upper pin groove 21 and lower pin groove 22 are provided on the bottom surface and end of the support base 2. The length directions of the two pin grooves are parallel, forming a square pin hole. The anti-rotation pin 23 is inserted into this pin hole, which effectively prevents the threaded end of the support base 2 from unscrewing out of the threaded positioning hole 18, ensuring a stable connection.

[0048] As an optimization of this embodiment, a semi-circular arc opening 24 is provided on the opposite surfaces of the upper clamp 4 and the lower clamp 5, and the two arc openings 24 are arranged opposite each other to form a clamping opening 7. An elastic anti-slip layer 25 is provided inside the arc opening 24.

[0049] Specifically, the upper clamp 4 and the lower clamp 5 are U-shaped, with one side recessed to form a semi-circular arc opening 24. To prevent relative sliding between the clamp opening 7 and the inlet / outlet pipe 6, an elastic anti-slip layer 25 is provided inside the arc opening 24. Moreover, the elastic anti-slip layer 25 can elastically deform when compressed, and its compressed size is adapted to the outer diameter of the inlet / outlet pipe 6, ensuring sufficient pressure while avoiding damage to the inlet / outlet pipe 6.

[0050] As an optimization of this embodiment, a positioning protrusion 26 and a positioning groove 27 are respectively provided on the bottom surface of the upper clamping body 4 and the top surface of the lower clamping body 5, with the positioning protrusion 26 extending into the positioning groove 27.

[0051] Specifically, the positioning protrusion 26 is inserted into the positioning groove 27 to achieve initial positioning, which facilitates the passage of the fixing bolt 11 of the detachable structure 3, improving installation efficiency. Moreover, the sizes of the positioning protrusion 26 and the positioning groove 27 are adapted to each other, and the two fit together perfectly, so that the radial offset is very small, further ensuring that the upper clamp 4 and the lower clamp 5 are aligned.

[0052] In this embodiment, the base 2 is cylindrical, and the side of the base 2 is provided with an arc-shaped interface 28 whose inner diameter is adapted to the outer diameter of the manifold 1. The manifold 1 is embedded in the arc-shaped interface 28 and fixed by welding. The interface 28 on the side of the base 2 is adapted to the shape and outer diameter of the manifold 1. The interface 28 is attached to the manifold 1 and fixed by welding, so that the connection is stable.

[0053] Specific working principle: During assembly, after connecting the inlet / outlet pipe 6 to the interface of the manifold 1, the inlet / outlet pipe 6 is bent toward one side of the support base 2. On the support base 2, the positioning hole 18 of the base plate 8 is screwed to the end of the support base 2. After screwing to a sufficient depth, the rotation angle is adjusted so that the upper pin groove 21 and the lower pin groove 22 are aligned. The anti-rotation pin 23 is inserted. Then, the upper clamp 4 and the lower clamp 5 are initially clamped on the corresponding positions on the inlet / outlet pipe 6. Then, the top plate 9 is placed on the top surface of the upper clamp 4. The fixing bolts 11 pass through the top plate 9, the upper clamp 4, and the lower clamp 5 in sequence and are tightened on the connecting hole 12 of the base plate 8 to complete the installation.

[0054] Example 2

[0055] The working principle of this embodiment is basically the same as that of embodiment 1, except that the detachable component 10 is different.

[0056] Specific implementation examples Figure 6As shown, the detachable component 10 includes two T-shaped shafts 14 distributed on both sides of the clamping opening 7. The shafts 14 pass through the connecting holes 12 on the top plate 9, the upper clamping body 4, the lower clamping body 5, and the bottom plate 8 in sequence. Two radially penetrating limiting holes 16 are axially distributed at the front end of the shafts. A pin 17 is inserted in one of the limiting holes 16. The head of the pin 17 and the T-shaped shaft 14 abut against the top surface of the top plate 9 and the bottom surface of the bottom plate 8, respectively.

[0057] Specifically, the detachable component 10 can also be achieved through two sets of T-shaped shafts 14. The cross-section of the T-shaped shaft 14 passing through the axis is T-shaped, and its head outer diameter is larger than the inner diameter of the connecting hole 12. The shaft body of the T-shaped shaft 14 passes through each connecting hole 12, and the lower end is exposed. A limiting through hole 16 is radially provided on the lower end. The pin 17 is inserted into the limiting through hole 16 to close and fix the bottom plate 8 and the top plate 9. Multiple limiting through holes 16 are provided to accommodate upper clamping bodies 4 and lower clamping bodies 5 of different heights, thereby improving compatibility.

[0058] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A reinforcement structure for the inlet and outlet liquid pipes of a microchannel heat exchanger, characterized in that, Includes a support base (2) fixed on the manifold (1), on which an upper clamping block (4) and a lower clamping block (5) are detachably provided by a clamping structure (3), and a clamping opening (7) with an inner diameter adapted to the outer diameter of the inlet and outlet pipe (6) is formed between the upper clamping block (4) and the lower clamping block (5), and the inlet and outlet pipe (6) is clamped in the clamping opening (7).

2. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 1, characterized in that, The clamping structure (3) includes a base plate (8) and a top plate (9). The base plate (8) is fixedly connected to the support base (2). The upper clamping block (4) and the lower clamping block (5) are clamped between the base plate (8) and the top plate (9). The base plate (8) and the top plate (9) are fixed together by a detachable component (10).

3. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 2, characterized in that, The detachable component (10) includes at least two fixing bolts (11) distributed on both sides of the clamp (7). The shank of the fixing bolt (11) passes through the connecting hole (12) on the top plate (9), the upper clamping block (4), the lower clamping block (5) and the bottom plate (8) in sequence. A nut is engaged on the threaded section (13) at the front end of the fixing bolt (11). The inner end face of the nut abuts against the bottom plate (8), or the threaded section (13) engages with the internal thread of the connecting hole (12) on the bottom plate (8).

4. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 2, characterized in that, The detachable component (10) includes at least two T-shaped shafts (14) distributed on both sides of the clamping opening (7). The shafts (14) pass through the connecting holes (12) on the top plate (9), the upper clamping block (4), the lower clamping block (5), and the bottom plate (8) in sequence. The front end of the shaft has at least one radially penetrating limiting through hole (16). A pin (17) passes through one of the limiting through holes (16). The head of the pin (17) and the T-shaped shaft (14) abut against the top surface of the top plate (9) and the bottom surface of the bottom plate (8), respectively.

5. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 2, characterized in that, The bottom surface of the base plate (8) is provided with a positioning hole (18), and the end of the support base (2) is inserted into the positioning hole (18) and fixed.

6. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 5, characterized in that, The positioning hole (18) is a circular threaded hole, and the end of the support base (2) is circular and has an external thread. The external thread and the threaded hole are engaged and connected. Alternatively, the positioning hole (18) is a light hole, and the end of the support base (2) is inserted into the positioning hole (18) and fixed by welding or bonding.

7. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 6, characterized in that, The support base (2) has an upper pin groove (21) extending radially along the positioning hole (18) on its bottom surface. The support base (2) has a lower pin groove (22) corresponding to the upper pin groove (21) at its end. A plate-shaped anti-rotation pin (23) is inserted between the upper pin groove (21) and the lower pin groove (22).

8. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to any one of claims 1-7, characterized in that, The upper clamping block (4) and the lower clamping block (5) are provided with semi-circular arc openings (24) on their opposite surfaces. The two arc openings (24) are arranged opposite each other to form the clamping opening (7). An elastic anti-slip layer (25) is provided inside the arc opening (24).

9. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to claim 8, characterized in that, The bottom surface of the upper clamping block (4) and the top surface of the lower clamping block (5) are respectively provided with a positioning protrusion (26) and a positioning groove (27), and the positioning protrusion (26) extends into the positioning groove (27).

10. The reinforced structure for the inlet and outlet liquid pipes of the microchannel heat exchanger according to any one of claims 1-7, characterized in that, The support base (2) is cylindrical, and the side of the support base (2) is provided with an arc-shaped interface (28) whose inner diameter is adapted to the outer diameter of the manifold (1). The manifold (1) is embedded in the arc-shaped interface (28) and fixed by welding or bonding.

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