A flat aluminum tube with few pores and microchannels

Abstract

This utility model relates to the field of aluminum flat tube heat exchange technology, and discloses an aluminum flat tube with few pores and microchannels. The tube includes a tube body with multiple channels inside. Each channel's inner wall is fixedly connected to an anti-corrosion and wear-resistant layer, and each anti-corrosion and wear-resistant layer's inner wall is fixedly connected to a spiral guide rib. An installation ring is fixedly connected to the right side of the tube body's outer wall. A flow divider plate is fixedly connected to the center of the installation ring's inner wall, and a flow divider cone is fixedly connected to the inner wall of the flow divider plate. A cleaning mechanism is provided on the front right side of the tube body's outer wall to unclog the multiple anti-corrosion and wear-resistant layers. In this utility model, the flow divider cone and flow divider plate work together to initially guide and disperse the fluid, which is then evenly distributed to each channel by the flow divider plate, ensuring uniform fluid distribution. The spiral guide ribs increase the surface area, promoting turbulence and guiding spiral flow, thereby improving heat exchange efficiency and preventing a decrease in fluid flow rate due to increased resistance.

Description

Technical Field

[0001] This utility model relates to the field of aluminum flat tube heat exchange technology, and in particular to an aluminum flat tube with a few pores and microchannels. Background Technology

[0002] Aluminum flat tubes are aluminum tubes with a flat cross-section. Due to their good thermal conductivity, corrosion resistance and relatively light weight, they are widely used in many fields. In the refrigeration industry, they are often used as heat exchanger pipes in air conditioners, refrigerators and refrigeration equipment. Heat exchange is achieved through the flow of refrigerant inside to achieve the purpose of refrigeration. In order to further improve the heat dissipation effect, a microchannel aluminum flat tube with fewer pores is required.

[0003] Traditional low-pore microchannel aluminum flat tubes typically consist of a tube body and a small number of microchannels distributed within the tube body. These microchannels are positioned along the length of the tube body for fluid flow. However, due to the limited number of microchannels, the heat exchange area between the tube and the external environment is relatively limited, resulting in low heat exchange efficiency. Existing technologies have attempted to improve this by increasing the number of microchannels and decreasing their diameter. Increasing the number of microchannels effectively expands the heat exchange area and improves efficiency. Furthermore, reducing the microchannel diameter allows the fluid to flow within a smaller space, resulting in more uniform flow velocity and improved fluid distribution. However, in practical applications, the increased number of microchannels and the reduced diameter significantly increase the flow resistance within the tube. When the power system of the device remains constant, this increased resistance leads to a decrease in fluid flow rate, thus affecting the overall heat dissipation or cooling effect of the system. Moreover, the cumulative flow resistance of numerous microchannels means the fluid needs to overcome even greater resistance to flow. Additionally, the smaller microchannels are prone to clogging, reducing the practicality of the device. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a wire stripping machine for power cord production, which aims to improve the problem in the prior art where the increased number and reduced diameter of microchannels lead to increased resistance and decreased fluid flow, thereby affecting the heat dissipation or cooling effect of the entire system.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an aluminum flat tube with few pores and microchannels, comprising a tube body, the tube body having multiple channels inside, the inner walls of the multiple channels being fixedly connected with anti-corrosion and wear-resistant layers, the inner walls of the multiple anti-corrosion and wear-resistant layers being fixedly connected with spiral guide ribs, the outer wall of the tube body being fixedly connected with an installation ring on the right side, the inner wall of the installation ring being fixedly connected with a flow divider plate, the inner wall of the flow divider plate being fixedly connected with a flow divider cone, and a cleaning mechanism being provided on the front side of the right end of the outer wall of the tube body, the cleaning mechanism being used to unclog the multiple anti-corrosion and wear-resistant layers.

[0006] As a further description of the above technical solution:

[0007] The cleaning mechanism includes multiple connecting pipes, the rear ends of which are respectively connected to the right side of the outer wall of multiple anti-corrosion and wear-resistant layers. The front ends of the multiple connecting pipes are connected to the same diversion pipe. A connector is connected to the front side of the middle part of the outer wall of the diversion pipe. A threaded groove is opened on the front side of the inner wall of the connector. A plug is threaded into the inner wall of the threaded groove.

[0008] As a further description of the above technical solution:

[0009] Multiple heat dissipation fins are fixedly connected to the left and right sides of the outer wall of the tube, and multiple heat dissipation holes are opened on the outer wall of the multiple heat dissipation fins.

[0010] As a further description of the above technical solution:

[0011] Multiple anti-corrosion and wear-resistant layers have multiple baffle columns fixedly connected to the left and right sides of their inner walls, and the surfaces of the multiple baffle columns are all treated with anti-corrosion coating.

[0012] As a further description of the above technical solution:

[0013] A microporous filter screen is fixedly connected to the left side of the inner wall of the mounting ring, and the surface of the microporous filter screen is treated with anti-corrosion.

[0014] As a further description of the above technical solution:

[0015] An installation head is fixedly connected to the right end of the outer wall of the mounting ring, and the inner wall of the installation head has two threaded grooves.

[0016] As a further description of the above technical solution:

[0017] Multiple miniature vibrators are fixedly connected to the top left and right sides of the tube, and control switches are fixedly connected to the front side of the outer wall of each miniature vibrator.

[0018] As a further description of the above technical solution:

[0019] A cross handle is fixedly connected to the front end of the blockage's outer wall, and the surface of the cross handle is treated with an anti-slip coating.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the flow divider cone and the flow divider plate work together. The flow divider cone first guides and disperses the fluid, and then the flow divider plate evenly distributes the fluid to each channel to ensure uniform fluid distribution. The corrugated design of the tube body works in conjunction with the spiral guide ribs. The corrugations increase the surface area and promote turbulence in the fluid, while the spiral guide ribs guide the spiral flow. Through the combination of these structures, the heat exchange efficiency is improved without increasing the number of microchannels or reducing the diameter, and the fluid flow rate is reduced due to increased resistance, thereby improving the heat dissipation or cooling effect of the system.

[0022] 2. In this utility model, the plug and the threaded groove of the connector are matched. When cleaning, the plug is unscrewed and connected to the flushing equipment. The flushing liquid enters the diversion pipe through the connector and is evenly distributed to the connecting pipe and flushing channel, realizing a convenient cleaning channel, maintaining smooth fluid flow, and ensuring heat dissipation or cooling effect. Attached Figure Description

[0023] Figure 1 This is a perspective view of a wire stripping machine for power cord production according to the present invention.

[0024] Figure 2 This is a partial structural exploded view of a wire stripping machine for power cord production proposed in this utility model;

[0025] Figure 3 This is a cross-sectional view of the tube body of a wire stripping machine for power cord production proposed in this utility model.

[0026] Figure 4 for Figure 3 A magnified view of point A;

[0027] Figure 5 This is a schematic diagram of the spiral guide rib of a wire stripping machine for power cord production proposed in this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of point B;

[0029] Figure 7 This is a schematic diagram of the cleaning mechanism of a wire stripping machine for power cord production according to the present invention;

[0030] Figure 8 This is a schematic diagram of the cross handle of a wire stripping machine for power cord production proposed in this utility model.

[0031] Legend:

[0032] 1. Pipe body; 2. Cleaning mechanism; 201. Connecting pipe; 202. Diverter pipe; 203. Connector; 204. Threaded groove one; 205. Blockage; 3. Channel; 4. Anti-corrosion and wear-resistant layer; 5. Spiral guide rib; 6. Mounting ring; 7. Diverter plate; 8. Diverter cone; 9. Heat dissipation fins; 10. Heat dissipation holes; 11. Baffle column; 12. Microporous filter screen; 13. Mounting head; 14. Threaded groove two; 15. Miniature vibrator; 16. Control switch; 17. Cross handle. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of an aluminum flat tube with few pores and microchannels, comprising a tube body 1. The tube body 1 is corrugated, and the undulation direction of the corrugations is consistent with the length direction of the tube body 1 to increase the surface area of ​​the tube body 1 and generate local turbulence during fluid flow, thereby improving heat exchange efficiency. Multiple channels 3 are formed inside the tube body 1. The inner walls of each channel 3 are fixedly connected to an anti-corrosion and wear-resistant layer 4 made of a self-cleaning material. Spiral guide ribs 5 are fixedly connected to the inner walls of each anti-corrosion and wear-resistant layer 4, extending from the inlet to the outlet of the channel 3. A mounting ring 6 is fixedly connected to the right side of the outer wall of the pipe body 1. A flow divider 7 is fixedly connected to the middle of the inner wall of the mounting ring 6. A flow divider cone 8 is fixedly connected to the inner wall of the flow divider 7. The flow divider cone 8 is conical with its apex facing the fluid inlet direction. Its function is to evenly distribute the fluid into each channel 3. A cleaning mechanism 2 is provided on the front right side of the outer wall of the pipe body 1. The cleaning mechanism 2 is used to unclog multiple anti-corrosion and wear-resistant layers 4. Multiple heat dissipation fins 9 are fixedly connected to both the left and right sides of the outer wall of the pipe body 1. Multiple heat dissipation holes 10 are opened on the outer wall of the multiple heat dissipation fins 9.

[0035] Specifically, when fluid is introduced into pipe 1, the flow divider cone 8, with its unique conical shape, first guides and disperses the fluid. Then, the flow divider plate 7 further functions, based on its rational layout and structural design within the mounting ring 6, uniformly and precisely distributing the fluid into each channel 3. This two-stage flow divider mechanism ensures the uniformity of the fluid entering each channel 3, laying the foundation for subsequent efficient heat exchange. Pipe 1 innovatively adopts a corrugated design, which significantly expands the surface area of ​​pipe 1. When the fluid flows inside the pipe, according to fluid dynamics principles, the corrugated structure induces localized turbulence. In turbulent conditions, the fluid's flow pattern is more complex and disordered, resulting in more thorough contact between the fluid and the pipe 1 wall, greatly increasing the area for heat transfer. In this way, without increasing the number of microchannels 3, a significant improvement in heat exchange efficiency is achieved, effectively avoiding problems such as increased flow resistance that may be caused by increasing the number of microchannels 3. When the fluid enters the channel 3, the spiral guide ribs 5, with their special structure that surrounds the inner wall of the channel 3 and extends from the inlet to the outlet, guide the fluid to form a spiral flow. This spiral flow mode greatly enhances the degree of fluid disturbance, effectively breaks the fluid boundary layer, and allows the fluid to contact the inner wall of the channel 3 more comprehensively and deeply, thereby strengthening the heat transfer process and further improving the heat exchange efficiency of the aluminum flat tube. The heat dissipation fins 9 on both sides of the outer wall of the tube body 1 increase the heat dissipation area, and the heat dissipation holes 10 on the fins further enhance air circulation, accelerate heat dissipation, and improve the heat dissipation efficiency of the aluminum flat tube.

[0036] Reference Figure 1 , Figure 7 and Figure 8 The cleaning mechanism 2 includes multiple connecting pipes 201, the rear ends of which are respectively connected to the right side of the outer wall of multiple anti-corrosion and wear-resistant layers 4. This allows the flushing fluid to be transported through the connecting pipes 201 into the channel 3 enclosed by the anti-corrosion and wear-resistant layers 4, thereby flushing and cleaning the channel 3. The front ends of the multiple connecting pipes 201 are connected to the same diversion pipe 202, which serves to evenly distribute the flushing fluid to each connecting pipe 201. The front side of the middle of the outer wall of the diversion pipe 202 is connected to a connector 203, which is used to connect to external flushing equipment to provide for the introduction of flushing fluid. The interface, the connector 203 has a threaded groove 204 on the front side of its inner wall for threaded connection with the compatible component, ensuring the stability and sealing of the connection. The inner wall of the threaded groove 204 is threaded with a plug 205, which can seal the connector 203 when no flushing operation is performed, preventing external impurities from entering the channel 3 and maintaining a clean environment inside the channel 3. The front end of the outer wall of the plug 205 is fixedly connected with a cross handle 17. The surface of the cross handle 17 is treated with anti-slip material, providing the operator with a structure that is easy to grip and apply force, making it convenient to screw the plug 205.

[0037] Specifically, when channel 3 needs cleaning, the plug 205 is rotated counterclockwise, utilizing the threaded connection to disengage it from the threaded groove 204 on the inner wall of connector 203, opening the connection port. This creates conditions for connecting external flushing equipment. The threaded connection ensures that the plug 205 is secure under normal conditions, preventing impurities from entering. The external flushing equipment is then connected to connector 203 via a standard adapter interface. After the flushing fluid is pumped out, it enters the diversion pipe 202 through connector 203. Based on fluid dynamics principles, the diversion pipe 202 utilizes a special internal structure to evenly distribute the flushing fluid to multiple connecting pipes 201. This process ensures that each channel 3 receives an equal amount of flushing fluid, achieving comprehensive and uniform cleaning. Each connecting pipe 201 then delivers the flushing fluid to the corresponding... The rinsing fluid should be injected into the channel 3 from the right side of the outer wall of the anti-corrosion and wear-resistant layer 4. Inside the channel 3, the flow of the rinsing fluid generates shearing and impact forces, which act on the inner wall of the channel 3, peeling off and carrying away impurities to achieve the cleaning purpose. This utilizes the force of fluid flow on the solid surface to effectively remove dirt. After cleaning, in order to prevent external impurities from entering the clean channel 3, rotate the plug 205 clockwise to make it tightly connected with the threaded groove 204 and seal the connector 203. Again, the sealing property of the threaded connection is used to maintain the clean environment inside the channel 3 and ensure the normal operation of the aluminum flat tube. The cross handle 17 at the front end of the plug 205 is treated with anti-slip to provide a convenient point of force for rotating the plug 205, so that the operator can easily rotate the plug 205.

[0038] Reference Figure 1 , Figure 5 and Figure 6 Multiple anti-corrosion and wear-resistant layers 4 have multiple flow-changing columns 11 fixedly connected to the left and right sides of their inner walls to change the flow pattern of the fluid in the channel 3. The surfaces of the multiple flow-changing columns 11 are all treated with anti-corrosion to effectively prevent the flow-changing columns 11 from being corroded by the fluid and extend their service life. A microporous filter screen 12 is fixedly connected to the left side of the inner wall of the mounting ring 6. The microporous filter screen 12 plays a filtering role before the fluid enters the internal channel 3 of the pipe body 1 due to its fine microporous structure. The surface of the microporous filter screen 12 is treated with anti-corrosion to prevent the microporous filter screen 12 from being corroded and damaged by the fluid and to ensure the long-term effectiveness of its filtering function.

[0039] Specifically, when the fluid flows through the turbulence column 11 in the channel 3, its special layout and shape will disrupt the originally relatively stable fluid streamlines, which will cause the fluid to form a complex turbulent state and increase the degree of mixing and disturbance inside the fluid. The microporous filter screen 12, after being treated with anti-corrosion, has good anti-corrosion performance. Before the fluid enters the internal channel 3 of the pipe body 1, the microporous filter screen 12 can effectively intercept various impurity particles mixed in the fluid by utilizing its fine mesh structure.

[0040] Reference Figure 1 , Figure 2 and Figure 5The mounting head 13 is fixedly connected to the right end of the outer wall of the mounting ring 6, making the installation of the aluminum flat tube in the overall system more convenient. The inner wall of the mounting head 13 is provided with a threaded groove 14, which can be threaded to the component with matching external thread. This connection method enhances the stability of the connection. Multiple micro vibrators 15 are fixedly connected to the top left and right sides of the tube body 1. Control switches 16 are fixedly connected to the front side of the outer wall of the multiple micro vibrators 15. When impurities may adhere or there are signs of slight blockage 205 in the channel 3, the micro vibrators 15 can be activated by the control switch 16. When the micro vibrators 15 are working, they generate high-frequency vibration and transmit the vibration to the tube body 1, causing the inner wall of the channel 3 to vibrate slightly.

[0041] Specifically, the mounting head 13 on the right end of the outer wall of the mounting ring 6 has a threaded groove 14 on its inner wall, which is a key connection structure. When it is necessary to connect the aluminum flat tube to other equipment or components, the matching connector with external threads can be screwed into the threaded groove 14. This threaded connection provides reliable mechanical fastening force, ensuring that the aluminum flat tube is installed firmly in the system and can withstand fluid pressure and external environmental forces, ensuring the sealing and stability of the entire system. When there are signs of impurities adhering or slight blockage 205 in the channel 3, the micro vibrator 15 can be activated by the control switch 16. When the micro vibrator 15 is working, it generates high-frequency vibration and transmits the vibration to the tube body 1, causing the inner wall of the channel 3 to vibrate slightly. This helps to loosen the impurities adhering to the inner wall of the channel 3, making them easier to be carried away by the fluid flushing, maintaining the smoothness of the channel 3 and ensuring heat exchange efficiency.

[0042] Working principle: When the fluid enters the tube 1, the flow divider cone 8 first guides and disperses the fluid, and then the flow divider plate 7 further disperses the fluid evenly into each channel 3. The tube 1 is corrugated, which greatly increases the surface area of ​​the tube 1. When the fluid flows in the tube, the corrugated structure causes the fluid to generate local turbulence. Under turbulent conditions, the fluid has more contact with the tube 1, and the heat transfer is more efficient. Thus, without relying on increasing the number of microchannels 3, the heat exchange efficiency is significantly improved. The anti-corrosion and wear-resistant layer 4 is made of self-cleaning material. On the one hand, the anti-corrosion and wear-resistant layer 4 can effectively resist the corrosive substances that may exist in the fluid and the loss caused by flow friction, extending the service life of the aluminum flat tube. On the other hand, the special surface microstructure of the self-cleaning material makes it difficult for impurity particles to adhere. Even if impurities enter, they can be carried away by the flow of the fluid, preventing blockage 205. When the fluid enters the channel 3, the spiral guide rib 5 guides it to form a spiral flow. This spiral flow greatly increases the fluid disturbance, breaks the fluid boundary layer, and makes the fluid more fully contact the inner wall of the channel 3, enhancing the heat transfer.

[0043] Furthermore, when cleaning channel 3 is required, firstly, the plug 205 is unscrewed counterclockwise from the threaded groove 204 on the inner wall of connector 203. Then, using the standard interface that matches the threaded groove 204, the external flushing equipment is precisely connected to connector 203. After the flushing fluid is pumped out from the external flushing equipment, it is introduced into the diversion pipe 202 through connector 203. Based on its unique internal structure design, the diversion pipe 202 utilizes the principle of fluid dynamics to achieve uniform diversion of the flushing fluid, ensuring that equal amounts of flushing fluid flow into the multiple connecting pipes 201 connected to it. The connector 201 then directs the flushing fluid to the right side of the outer wall of the corresponding multiple anti-corrosion and wear-resistant layers 4, and finally injects it into the channel 3. As the flushing fluid flows along the channel 3, it uses the shearing and impact forces generated during its flow to thoroughly flush the inner wall of the channel 3, effectively stripping and carrying away the impurities attached to the inner wall, thereby achieving the expected goal of cleaning the channel 3. After the cleaning process is completed, in order to maintain the clean environment inside the channel 3 and prevent the intrusion of external impurities, the plug 205 is rotated clockwise to make it tightly threadedly connected to the threaded groove 204, thereby sealing the connector 203.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An aluminum flat tube of a few-hole microchannel, comprising a tube body (1), characterized in that: The pipe body (1) has multiple channels (3) inside. The inner walls of the multiple channels (3) are fixedly connected with anti-corrosion and wear-resistant layers (4). The inner walls of the multiple anti-corrosion and wear-resistant layers (4) are fixedly connected with spiral guide ribs (5). The outer wall of the pipe body (1) is fixedly connected with an installation ring (6). The middle of the inner wall of the installation ring (6) is fixedly connected with a diverter plate (7). The inner wall of the diverter plate (7) is fixedly connected with a diverter cone (8). The front side of the right end of the outer wall of the pipe body (1) is provided with a cleaning mechanism (2). The cleaning mechanism (2) is used to unclog the multiple anti-corrosion and wear-resistant layers (4).

2. The low fin microchannel aluminum flat tube of claim 1, wherein: The cleaning mechanism (2) includes multiple connecting pipes (201). The rear ends of the multiple connecting pipes (201) are respectively connected to the right side of the outer wall of multiple anti-corrosion and wear-resistant layers (4). The front ends of the multiple connecting pipes (201) are connected to the same diversion pipe (202). The front side of the middle part of the outer wall of the diversion pipe (202) is connected to a connector (203). The front side of the inner wall of the connector (203) is provided with a threaded groove (204). The inner wall of the threaded groove (204) is threaded with a plug (205).

3. The low fin microchannel aluminum flat tube of claim 1, wherein: Multiple heat dissipation fins (9) are fixedly connected to the left and right sides of the outer wall of the tube body (1), and multiple heat dissipation holes (10) are opened on the outer wall of the multiple heat dissipation fins (9).

4. The low fin microchannel aluminum flat tube of claim 1, wherein: Multiple anti-corrosion and wear-resistant layers (4) have multiple turbulence columns (11) fixedly connected to the left and right sides of their inner walls, and the surfaces of the multiple turbulence columns (11) are all treated with anti-corrosion measures.

5. The low fin microchannel aluminum flat tube of claim 1, wherein: A microporous filter screen (12) is fixedly connected to the left side of the inner wall of the mounting ring (6), and the surface of the microporous filter screen (12) is treated with anti-corrosion.

6. The low fin microchannel aluminum flat tube of claim 1, wherein: The mounting ring (6) has a mounting head (13) fixedly connected to the right end of its outer wall. The inner wall of the mounting head (13) has a threaded groove (14).

7. The low fin microchannel aluminum flat tube of claim 1, wherein: Multiple micro vibrators (15) are fixedly connected to the top left and right sides of the tube body (1), and control switches (16) are fixedly connected to the front side of the outer wall of the multiple micro vibrators (15).

8. The aluminum flat tube with few pores and microchannels according to claim 2, characterized in that: A cross handle (17) is fixedly connected to the front end of the outer wall of the plug (205), and the surface of the cross handle (17) is treated with anti-slip treatment.

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