Heat exchanger with self-cleaning function

Abstract

The utility model discloses a heat exchanger with a self-cleaning function, which belongs to the technical field of heat exchangers and comprises a heat exchange barrel, two groups of mounting plates are fixedly mounted in an inner cavity of the heat exchange barrel, a plurality of heat exchange tubes are mounted in the inner cavity of the heat exchange barrel, and the heat exchange tubes are fixedly connected with the heat exchange barrel through the mounting plates. An inner cavity of the heat exchange barrel is divided into a heat exchange cavity used for storing a cooling medium and an injection cavity used for storing process fluid, the heat exchange cavity and the injection cavity are separated through a mounting plate at the lowermost end, and a supporting frame is fixedly mounted at the bottom end of the heat exchange barrel. The inner wall of each heat exchange pipe is slidably provided with a removing structure used for removing dirt on the inner wall of the heat exchange pipe, the outer wall of each heat exchange pipe is slidably provided with a cleaning structure used for cleaning dirt on the outer wall of the heat exchange pipe, stubborn dirt layers can be broken through a drill bit, the dirt on the inner wall is scraped through a scraper, and the inner wall is dynamically cleaned through a cleaning brush. Meanwhile, the cleaning structure utilizes magnetic linkage to enable cleaning cotton on a moving plate to wipe the outer wall of the heat exchange tube, and the problem of scaling of the inner wall and the outer wall can be solved simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a heat exchanger with a self-cleaning function. Background Technology

[0002] Heat exchangers are key heat exchange equipment in the caustic soda production process. They are mainly used to regulate the temperature of reactants or products in the synthesis furnace to ensure the stable and efficient operation of the reaction process. Their main function is to transfer heat from one medium to another to achieve the purpose of heating, cooling or heat recovery.

[0003] Chinese patent discloses a heat exchanger with a self-cleaning structure (publication number CN214022408U). This patent includes a top seat, with side mounting seats fixedly connected to both ends of the top seat. A first support rod is fixedly connected to the top of the side mounting seats. A drive shaft is rotatably connected between the two first support rods. A first bevel gear is fixedly connected to the outer side of the drive shaft. A motor support is fixedly connected to the inner top of the top seat. A motor baffle is fixedly connected to the top of the motor support. A drive motor is fixedly connected to the top of the motor baffle. A second bevel gear is rotatably connected to the bottom of the first bevel gear, and a drive rod is fixedly connected to the bottom of the second bevel gear. A rotating sleeve is installed at the contact point between the transmission rod and the top seat. A second screw is fixedly connected to the bottom of the transmission rod. A connecting rod is fixedly connected to the bottom of the second screw. A first screw is fixedly connected to the bottom of the connecting rod. Sliding grooves are rotatably connected to the outer sides of both the second and first screws. A sanitary ware baffle is fixedly connected to the outer side of the sliding groove. Sanitary ware grooves are installed at equal intervals inside the sanitary ware baffle. A second support rod is fixedly connected to the bottom of the top seat. A base is fixedly connected to the bottom of the second support rod. Heat exchange tube seats are installed at equal intervals inside the base and the side mounting seat. A heat exchange tube is inserted between the two heat exchange tube seats. A vertical slide is opened inside the second support rod.

[0004] Therefore, based on the above search and combined with existing information, during the operation of the forced circulation pump of the synthesis furnace in the caustic soda plant, the heat exchanger is cooled by circulating water. However, due to the impurities in the circulating water, scale easily forms inside the heat exchanger, leading to frequent blockages and severely affecting the cooling effect. However, this patented technology only cleans the outer wall of the internal pipes of the heat exchanger, failing to completely solve the problem of internal scaling and blockage. The continuous accumulation of dirt on the inner wall will further reduce the heat transfer efficiency and hinder fluid flow, resulting in an unsatisfactory cleaning effect and the inability to fully restore the equipment performance, thereby affecting the overall operating efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a heat exchanger with a self-cleaning function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A heat exchanger with a self-cleaning function includes a heat exchange tank. Two sets of mounting plates are fixedly installed in the inner cavity of the heat exchange tank. Multiple heat exchange tubes are installed in the inner cavity of the heat exchange tank, and the heat exchange tubes are fixedly connected to the heat exchange tank through the mounting plates. The inner cavity of the heat exchange tank is divided into a heat exchange chamber for storing cooling medium and an injection chamber for storing process fluid, and the two are separated by the lowest mounting plate. A support frame is fixedly installed at the bottom of the heat exchange tank.

[0008] Each heat exchange tube has a cleaning structure slidably installed on its inner wall for removing dirt from the inner wall of the heat exchange tube, and each heat exchange tube has a cleaning structure slidably installed on its outer wall for cleaning dirt from the outer wall of the heat exchange tube.

[0009] As a further embodiment of this utility model, the cleaning structure includes a movable tube, a drill bit is fixedly installed at the top end of the movable tube, and a scraper for scraping off dirt from the inner wall of the heat exchange tube is slidably installed on the outside of the movable tube.

[0010] As a further embodiment of this utility model, a cleaning brush for further removing dirt from the inner wall of the heat pipe is installed below the moving tube. The scraper and the cleaning brush are rotatably connected by a steering connection shaft, which is used to assist the cleaning structure in moving at the bend of the heat exchange tube.

[0011] As a further embodiment of this utility model, a fixed rod is fixedly installed in the inner cavity of the moving tube, and a moving part is slidably connected to the outer wall of the fixed rod. A transmission rod for controlling the movement of the scraper is rotatably connected inside the moving part through a pin, and the other end of the transmission rod is rotatably connected to the scraper through a pin.

[0012] As a further embodiment of this utility model, the inner cavity of the cleaning brush is rotatably connected to a connecting pipe, and the bottom end of the cleaning brush is fixedly connected to a guide block for driving the cleaning brush to rotate, and the guide block and the bottom end of the connecting pipe are rotatably connected through a bearing.

[0013] As a further embodiment of this utility model, the cleaning structure includes a fixing plate, and there are multiple fixing plates, all of which are fixedly sleeved on the outer wall of the heat exchange tube. Each fixing plate has a movable plate for cleaning the outer wall of the heat exchange tube installed on its bottom surface.

[0014] As a further embodiment of this utility model, the inner cavity of the movable plate is provided with a plurality of cleaning holes, and cleaning cotton for cleaning is installed in the cleaning holes.

[0015] As a further embodiment of this utility model, a rotating sleeve for driving the moving plate to reset is rotatably installed in the inner cavity of the fixed plate on the right. A torsion spring is fixedly connected to the inner cavity of the rotating sleeve, and a reset rope is wound around the outer wall of the rotating sleeve, with the bottom end of the reset rope fixedly connected to the moving plate.

[0016] As a further embodiment of this utility model, a water injection pipe is fixedly installed on the left side of the heat exchange tank, and a drain pipe is fixedly installed on the right side of the heat exchange tank, and both the water injection pipe and the drain pipe are connected to the heat exchange chamber.

[0017] As a further embodiment of this utility model, a liquid injection pipe is fixedly installed on the left side of the heat exchange tank, and a liquid drain pipe is fixedly installed on the right side of the heat exchange tank, and both the liquid injection pipe and the liquid drain pipe are connected to the injection chamber.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. When using this utility model, the drill bit in the cleaning structure can break up stubborn scale, the scraper can scrape off the dirt on the inner wall, and the cleaning brush can further dynamically clean the inner wall. The guide block is driven to rotate by the water flow, which drives the cleaning brush to make a circular motion around the axis of the connecting pipe, forming a stable circumferential brushing action, effectively removing impurities attached to the inner wall of the heat exchange tube. At the same time, the cleaning structure uses magnetic linkage to allow the cleaning cotton on the moving plate to wipe the outer wall of the heat exchange tube, which can solve the problem of scale on the inner and outer walls at the same time. This avoids the problems of reduced heat transfer efficiency and obstructed fluid flow caused by the continuous accumulation of dirt on the inner wall while only cleaning the outer wall, which greatly improves the cleaning effect and ensures the overall operating efficiency of the equipment.

[0020] 2. When this utility model is in use, the ball joint design of the steering connecting shaft allows the moving tube and the cleaning brush to bend and rotate, ensuring that the cleaning component can smoothly pass through the bending section. At the same time, when the scraper is squeezed by the inner wall of the heat exchange tube in the bending section, it will push the moving part extension spring to move along the fixed rod, causing the scraper on one side that is in contact with the inner wall of the heat exchange tube in the bending section to retract, while the remaining scraper always stays in contact with the tube wall under the action of the spring. This ensures that the cleaning structure can work effectively in all parts of the entire heat exchange tube, including the bending section, and will not be affected by the complex structure of the pipe. This further improves the equipment's ability to cope with complex working conditions and helps maintain the efficient operation of the heat exchanger. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a heat exchanger with self-cleaning function.

[0022] Figure 2 This is a cross-sectional view of the overall structure of a heat exchanger with self-cleaning function.

[0023] Figure 3 This is a structural diagram of a cleaning structure in a heat exchanger with a self-cleaning function.

[0024] Figure 4 This is a cross-sectional view of the cleaning structure in a heat exchanger with a self-cleaning function.

[0025] Figure 5 This is a structural diagram of a cleaning structure in a heat exchanger with a self-cleaning function.

[0026] Figure 6 This is a cross-sectional view of the cleaning structure in a heat exchanger with self-cleaning function.

[0027] In the diagram: 1. Heat exchange tank; 2. Mounting plate; 3. Heat exchange tube; 4. Heat exchange chamber; 5. Injection chamber; 6. Support frame; 7. Divider plate; 8. Baffle plate;

[0028] 901. Moving tube; 902. Drill bit; 903. Scraper; 904. Cleaning brush; 905. Steering connecting shaft; 906. Fixed rod; 907. Moving part; 908. Transmission rod; 909. Spring; 910. Magnetic ring; 911. Connecting tube; 912. Guide block; 913. Locking block;

[0029] 101. Fixed plate; 102. Moving plate; 103. Cleaning cotton; 104. Connecting ring; 105. Rotating sleeve; 106. Torsion spring; 107. Reset rope; 108. Silicone pad; 11. Water injection pipe; 12. Drain pipe; 13. Liquid injection pipe; 14. Liquid drain pipe. Detailed Implementation

[0030] 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.

[0031] Example 1: Please refer to Figure 1 , Figure 2 A heat exchanger with self-cleaning function includes a heat exchange tank 1. Two sets of mounting plates 2 are fixedly installed in the inner cavity of the heat exchange tank 1. Multiple heat exchange tubes 3 are installed in the inner cavity of the heat exchange tank 1, and the heat exchange tubes 3 are fixedly connected to the heat exchange tank 1 through the mounting plates 2. The inner cavity of the heat exchange tank 1 is divided into a heat exchange chamber 4 for storing cooling medium and an injection chamber 5 for storing process fluid, and the two are separated by the lowest mounting plate 2. A support frame 6 is fixedly installed at the bottom of the heat exchange tank 1.

[0032] Each heat exchange tube 3 has a cleaning structure slidably installed on its inner wall for removing dirt from the inner wall of the heat exchange tube 3, and each heat exchange tube 3 has a cleaning structure slidably installed on its outer wall for cleaning dirt from the outer wall of the heat exchange tube 3.

[0033] Specifically, the inner walls of both sets of mounting plates 2 are provided with perforations for fixing heat exchange tubes 3, and each heat exchange tube 3 is inserted through the perforations. The inner wall of the heat exchange tank 1 is fixedly installed with a partition plate 7 for separating the heat exchange chamber 4, and the partition plate 7 is located inside the heat exchange chamber 4. Its function is to plan the flow path of the cooling medium, extend the flow path of the cooling medium in the heat exchange chamber 4, and enhance the contact time and contact area between the cooling medium and the outer wall of the heat exchange tube 3, thereby improving the heat exchange efficiency. The bottom of the inner wall of the heat exchange tank 1 is fixedly installed with a baffle 8 for separating the injection chamber 5, and the baffle 8 is located inside the injection chamber 5. The top of the baffle 8 is fixedly connected to the bottom surface of the bottom end, which can guide and divert the flow of the process fluid, so that the process fluid enters the heat exchange tube 3 more evenly in the injection chamber 5, which helps to improve the heat exchange effect. At the same time, it can also reduce the impact and turbulence generated during the fluid flow to a certain extent, and ensure the stability of equipment operation.

[0034] Please see Figure 3 , Figure 4 The cleaning structure includes a moving tube 901, a drill bit 902 fixedly installed at the top end of the moving tube 901, a scraper 903 for scraping off dirt from the inner wall of the heat exchange tube 3 slidably installed on the outside of the moving tube 901, and a cleaning brush 904 for further cleaning the dirt from the inner wall of the heat exchange tube 3 installed below the moving tube 901. The scraper 903 and the cleaning brush 904 are rotatably connected by a steering connection shaft 905, and the steering connection shaft 905 is used to assist the cleaning structure in moving at the bend of the heat exchange tube 3.

[0035] A fixed rod 906 is fixedly installed in the inner cavity of the moving tube 901. A moving part 907 is slidably connected to the outer wall of the fixed rod 906. A transmission rod 908 for controlling the movement of the scraper 903 is rotatably connected inside the moving part 907 through a pin. The other end of the transmission rod 908 is rotatably connected to the scraper 903 through a pin.

[0036] Specifically, there are two movable parts 907, and springs 909 for pushing the transmission rod 908 to reset are fixedly connected between them. The springs 909 are sleeved on the outer wall of the fixed rod 906. The inner cavity of the movable tube 901 is provided with a rotating groove for providing rotation of the transmission rod 908, and the transmission rod 908 is located in the rotating groove.

[0037] More specifically, there are multiple scrapers 903, and each scraper 903 has a magnetic ring 910 fixedly installed at its center for adsorption and synchronous operation of the cleaning structure. The outer surface of the magnetic ring 910 is provided with an electroplated protective layer, which to a certain extent prevents the process fluid from contacting the metal inside the magnet, thereby delaying the rusting time.

[0038] The inner cavity of the cleaning brush 904 is rotatably connected to the connecting tube 911, and the bottom end of the cleaning brush 904 is fixedly connected to the guide block 912 for driving the cleaning brush 904 to rotate. The guide block 912 and the bottom end of the connecting tube 911 are rotatably connected through the bearing.

[0039] Specifically, there are two steering connection shafts 905, which are fixedly connected to the moving tube 901 and the connecting tube 911 respectively. The two steering connection shafts 905 are ball-jointed with each other. The outer wall of the guide block 912 is provided with a spiral groove. The rotational driving force generated by the water flowing along the spiral groove drives the guide block 912 to rotate, which in turn drives the cleaning brush 904 to make a circular motion around the axis of the connecting tube 911, thereby realizing the dynamic cleaning of the inner wall of the heat exchange tube 3. By converting the fluid kinetic energy into rotational mechanical energy, in conjunction with the guide block 912 and the cleaning brush 904, a stable circumferential brushing action is formed, which effectively removes the impurities attached to the inner wall of the heat exchange tube and ensures the heat exchange efficiency.

[0040] More specifically, the inner wall of the cleaning brush 904 is fixedly equipped with a locking block 913 to ensure the stable rotation of the cleaning brush 904, and the outer wall of the connecting pipe 911 is provided with a slot for the locking block 913 to rotate, and the locking block 913 is located in the slot.

[0041] Example 2: Please refer to Figure 2 , Figure 5 , Figure 6 Based on Embodiment 1, the cleaning structure includes a fixed plate 101. Multiple fixed plates 101 are provided and are fixedly sleeved on the outer wall of the heat exchange tube 3. A movable plate 102 for cleaning the outer wall of the heat exchange tube 3 is installed on the bottom surface of each fixed plate 101. Multiple cleaning holes are opened in the inner cavity of the movable plate 102, and cleaning cotton 103 for cleaning is installed in the cleaning holes.

[0042] Specifically, a connecting ring 104 for magnetic connection with the magnetic ring 910 is also installed in the cleaning hole, and the outer surface of the connecting ring 104 is provided with an electroplated protective layer. The cleaning cotton 103 and the connecting ring 104 are both fixedly connected to the inner wall of the moving plate 102.

[0043] Please see Figure 2 , Figure 6 The inner cavity of the right fixed plate 101 is rotatably mounted with a rotating sleeve 105 for driving the moving plate 102 to reset. The inner cavity of the rotating sleeve 105 is fixedly connected with a torsion spring 106. The end of the torsion spring 106 away from the rotating sleeve 105 is fixedly connected to the fixed plate 101 through a pin, and this pin is rotatably connected to the rotating sleeve 105. The outer wall of the rotating sleeve 105 is wrapped with a reset rope 107, and the bottom end of the reset rope 107 is fixedly connected to the moving plate 102.

[0044] Specifically, the left movable plate 102 is magnetically connected to the magnetic ring 910 via the connecting ring 104, and then moves upward along the outer wall of the heat exchange tube 3 with the movable tube 901 to clean the outer wall of the heat exchange tube 3 until the magnetic ring 910 moves up to be flush with the fixed plate 101. At this time, the connecting ring 104 is disconnected from the magnetic ring 910, and the left movable plate 102 moves downward and reset under the influence of gravity. Silicone pads 108 for preventing wear are fixedly installed on the corresponding sides of the fixed plate 101 and the movable plate 102.

[0045] More specifically, the right-side movable plate 102 moves down following the magnetic ring 910 until the magnetic ring 910 moves up to be flush with the fixed plate 101. Then, the torsion spring 106 drives the rotating sleeve 105 to rotate, causing the reset rope 107 to pull the right-side movable plate 102 up to reset.

[0046] Please see Figure 1 , Figure 2 A water injection pipe 11 is fixedly installed on the left side of the heat exchange tank 1, and a drain pipe 12 is fixedly installed on the right side of the heat exchange tank 1. Both the water injection pipe 11 and the drain pipe 12 are connected to the heat exchange chamber 4. A liquid injection pipe 13 is also fixedly installed on the left side of the heat exchange tank 1, and a liquid drain pipe 14 is also fixedly installed on the right side of the heat exchange tank 1. Both the liquid injection pipe 13 and the liquid drain pipe 14 are connected to the injection chamber 5.

[0047] The working principle of this utility model is as follows:

[0048] First, the cooling medium is drawn by a water pump and enters from the inlet of the heat exchange chamber 4. It is guided by the partition plate 7 to form a meandering flow path, which prolongs the contact time with the outer wall of the heat exchange tube 3. Then, another set of water pumps draws the process fluid and enters from the inlet of the injection chamber 5. After being evenly distributed by the baffle 8, it enters each heat exchange tube 3 and forms countercurrent heat exchange with the cooling medium.

[0049] Then, when the process fluid flows through the spiral groove of the guide block 912, it generates a rotational driving force, which drives the guide block 912 to drive the cleaning brush 904 to make a circular motion around the axis of the connecting pipe 911. At the same time, the process fluid pushes the moving pipe 901 to drive the scraper 903 to move along the inner wall of the heat exchange tube 3, which, together with the drill bit 902, breaks up the stubborn scale layer and achieves circumferential brushing of the inner wall.

[0050] When the cleaning structure moves to the curved section of the heat exchange tube 3, the ball joint of the steering connection shaft 905 causes the moving tube 901 and the cleaning brush 904 to bend and rotate. When the scraper 903 is squeezed by the inner wall of the curved section of the heat exchange tube 3, it pushes the moving part 907 to extend the spring 909 to move along the fixed rod 906, so that the scraper 903 on one side that is in contact with the inner wall of the curved section of the heat exchange tube 3 retracts, while the remaining scraper 903 is always in contact with the tube wall under the action of the spring 909.

[0051] Secondly, the magnetic ring 910 of the scraper 903 is magnetically linked with the connecting ring 104, causing the moving plate 102 to move synchronously with the magnetic ring 910. This allows the cleaning cotton 103 to wipe the outer wall of the heat exchange tube 3 during the movement. When the magnetic ring 910 moves to be flush with the fixed plate 101, the connecting ring 104 disconnects from the magnetic ring 910. At this time, the left moving plate 102 is automatically lowered and reset due to gravity after the magnetic force is disconnected. However, the right moving plate 102 is reset by the torsion spring 106 driving the rotating sleeve 105 to wind up the reset rope 107.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heat exchanger with a self-cleaning function, comprising a heat exchange tank (1), characterized in that, The heat exchange tank (1) has two sets of mounting plates (2) fixedly installed in its inner cavity. The heat exchange tank (1) has multiple heat exchange tubes (3) installed in its inner cavity. The heat exchange tubes (3) are fixedly connected to the heat exchange tank (1) through the mounting plates (2). The inner cavity of the heat exchange tank (1) is divided into a heat exchange chamber (4) for storing cooling medium and an injection chamber (5) for storing process fluid. The two are separated by the lowest mounting plate (2). The bottom of the heat exchange tank (1) is fixedly installed with a support frame (6). Each heat exchange tube (3) has a cleaning structure slidably installed on its inner wall for removing dirt from the inner wall of the heat exchange tube (3), and each heat exchange tube (3) has a cleaning structure slidably installed on its outer wall for cleaning dirt from the outer wall of the heat exchange tube (3).

2. A heat exchanger with self-cleaning function according to claim 1, characterized in that, The cleaning structure includes a moving tube (901), a drill bit (902) is fixedly installed at the top end of the moving tube (901), and a scraper (903) for scraping off dirt from the inner wall of the heat exchange tube (3) is slidably installed on the outside of the moving tube (901).

3. A heat exchanger with self-cleaning function according to claim 2, characterized in that, A cleaning brush (904) for further cleaning the dirt on the inner wall of the heat exchange tube (3) is installed below the moving tube (901). The scraper (903) and the cleaning brush (904) are rotatably connected by a steering connection shaft (905), and the steering connection shaft (905) is used to assist the cleaning structure in moving at the bend of the heat exchange tube (3).

4. A heat exchanger with self-cleaning function according to claim 2, characterized in that, A fixed rod (906) is fixedly installed in the inner cavity of the moving tube (901). A moving part (907) is slidably connected to the outer wall of the fixed rod (906). A transmission rod (908) for controlling the movement of the scraper (903) is rotatably connected inside the moving part (907) through a pin. The other end of the transmission rod (908) is rotatably connected to the scraper (903) through a pin.

5. A heat exchanger with self-cleaning function according to claim 3, characterized in that, The inner cavity of the cleaning brush (904) is rotatably connected to a connecting pipe (911), and the bottom end of the cleaning brush (904) is fixedly connected to a guide block (912) for driving the cleaning brush (904) to rotate. The guide block (912) and the bottom end of the connecting pipe (911) are rotatably connected by a bearing.

6. A heat exchanger with self-cleaning function according to claim 1, characterized in that, The cleaning structure includes a fixing plate (101), and there are multiple fixing plates (101) which are fixedly sleeved on the outer wall of the heat exchange tube (3). Each fixing plate (101) has a movable plate (102) for cleaning the outer wall of the heat exchange tube (3) installed on its bottom surface.

7. A heat exchanger with self-cleaning function according to claim 6, characterized in that, The inner cavity of the movable plate (102) is provided with a plurality of cleaning holes, and cleaning cotton (103) for cleaning is installed in the cleaning holes.

8. A heat exchanger with self-cleaning function according to claim 6, characterized in that, The inner cavity of the fixed plate (101) on the right side is rotatably equipped with a rotating sleeve (105) for driving the moving plate (102) to reset. The inner cavity of the rotating sleeve (105) is fixedly connected with a torsion spring (106). The outer wall of the rotating sleeve (105) is wrapped with a reset rope (107), and the bottom end of the reset rope (107) is fixedly connected to the moving plate (102).

9. A heat exchanger with self-cleaning function according to claim 1, characterized in that, A water injection pipe (11) is fixedly installed on the left side of the heat exchange tank (1), and a drain pipe (12) is fixedly installed on the right side of the heat exchange tank (1). Both the water injection pipe (11) and the drain pipe (12) are connected to the heat exchange chamber (4).

10. A heat exchanger with self-cleaning function according to claim 1, characterized in that, A liquid injection pipe (13) is fixedly installed on the left side of the heat exchange tank (1), and a liquid drain pipe (14) is fixedly installed on the right side of the heat exchange tank (1). Both the liquid injection pipe (13) and the liquid drain pipe (14) are connected to the injection chamber (5).

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