Improved structure of clean energy heat exchanger with high heat transfer efficiency

Abstract

The application relates to the technical field of heat exchangers, in particular to an improved structure of a clean energy heat exchanger with high heat transfer efficiency, which comprises a heat exchange main body and a uniform distribution assembly. The heat exchange main body is composed of a plurality of parallel arranged heat exchange plates, and a fluid channel is formed between adjacent plates; the uniform distribution assembly is installed in an inlet area, uniform fluid distribution is realized through a distribution plate and a flow guide, and a detachable cleaning device is arranged. A micro convex structure and a graphene coating are arranged on the surface of the heat exchange plate, so that the heat transfer efficiency and corrosion resistance are improved. Through optimization of fluid distribution, enhancement of turbulent flow effect and convenient cleaning design, the problems of uneven fluid distribution and easy fouling and blockage of a traditional heat exchanger are solved, meanwhile, the disadvantages of equipment size increase and energy consumption increase are avoided, and the heat exchange performance and maintenance convenience are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the field of clean energy and heat exchange technology, specifically an improved structure for a clean energy heat exchanger with high-efficiency heat transfer. Background Technology

[0002] In the fields of clean energy utilization and heat exchange, the heat transfer efficiency of heat exchangers is one of the important indicators for measuring equipment performance. Currently, some heat exchangers based on plate and shell-and-tube structures have appeared on the market. Although these devices can achieve a certain heat transfer function, they still have certain limitations in terms of high-efficiency heat transfer. For example, some heat exchangers have uneven fluid distribution due to suboptimal internal flow channel design, which affects the overall heat transfer effect. In addition, some devices are prone to scale buildup or blockage during long-term operation, further reducing heat transfer efficiency.

[0003] Some heat exchangers in the prior art improve heat transfer performance by increasing the heat exchange area or increasing the fluid flow rate, but this design often requires a larger equipment volume or higher drive energy consumption, increasing manufacturing costs and operating expenses. At the same time, some heat exchangers have complex internal structures, making maintenance and cleaning difficult, which brings inconvenience to practical applications.

[0004] Therefore, we have made improvements to this by proposing an improved structure for a clean energy heat exchanger with high efficiency in heat transfer. Utility Model Content

[0005] The purpose of this invention is to solve the problems of uneven fluid distribution, low heat transfer efficiency, and easy fouling or blockage during long-term operation of existing heat exchangers due to suboptimal internal flow channel design. Simultaneously, it avoids the drawbacks of increased equipment size and energy consumption caused by increasing heat exchange area or flow rate to improve performance. Furthermore, addressing the shortcomings of some heat exchangers with complex internal structures and difficult maintenance and cleaning, it provides an improved structure for a clean energy heat exchanger with high-efficiency heat transfer.

[0006] To achieve the aforementioned objectives and address the aforementioned problems, this utility model proposes an improved structure for a high-efficiency heat transfer clean energy heat exchanger, comprising a heat exchange body and a uniform flow distribution assembly. The heat exchange body includes multiple parallel heat exchange plates, with fluid channels formed between adjacent heat exchange plates. The uniform flow distribution assembly is installed in the inlet area of ​​the heat exchange body and connected to the ends of the heat exchange plates, used to uniformly distribute the fluid entering the heat exchanger; a detachable cleaning device is provided on the outer side of the uniform flow distribution assembly for periodically removing scale buildup within the fluid channels.

[0007] The uniform flow distribution assembly includes a flow divider plate and a flow guide. The flow divider plate is fixedly installed at the inlet end of the heat exchange plates, and its surface has several flow divider holes, the diameter of each hole gradually decreasing along the fluid flow direction. The flow guide is located inside the flow divider plate, and its shape is arc-shaped. Both ends of the flow guide are respectively connected to the adjacent heat exchange plates by bolts. The arc-shaped surface of the flow guide can guide the fluid to form a stable velocity and pressure field before entering the fluid channel.

[0008] As a preferred technical solution of this application, the cleaning device includes a scraper and a drive rod. The two side edges of the scraper are embedded in the fluid channel and contact the surface of the heat exchange plates. One end of the drive rod is fixedly connected to the scraper, and the other end penetrates the shell of the heat exchange body and extends to the outside. A rotating handle is provided at the end of the drive rod. By manually rotating the rotating handle, the drive rod drives the scraper to move along the fluid channel, thereby removing the scale adhering to the surface of the heat exchange plates.

[0009] As a preferred technical solution of this application, the surface of the heat exchange plate is provided with micro-protrusion structures, which are distributed in a rectangular array on the inner surface of the heat exchange plate. Each micro-protrusion structure has a height of 0.1 mm to 0.3 mm, a width of 0.5 mm to 1 mm, and a spacing of 2 mm to 5 mm between them. The design of the micro-protrusion structures can break the fluid boundary layer, enhance the fluid turbulence effect, and thus improve heat transfer efficiency.

[0010] As a preferred technical solution of this application, the heat exchange plate is made of aluminum alloy and coated with a graphene coating. The graphene coating has a thickness of 0.01 mm to 0.05 mm, and has high thermal conductivity and corrosion resistance, further improving the heat transfer performance and service life of the heat exchange plate.

[0011] As a preferred technical solution of this application, the back of the flow divider is provided with supporting ribs, the number of which is 4 to 8, evenly distributed on the back of the flow divider. The cross-sectional shape of the supporting ribs is trapezoidal, with a height of 2mm to 5mm and a width of 3mm to 6mm. The design of the supporting ribs not only enhances the structural strength of the flow divider, but also reduces the impact force of the fluid on the flow divider.

[0012] As a preferred technical solution of this application, the arc-shaped surface of the guide member is provided with a plurality of guide grooves, which are uniformly distributed along the circumference of the arc-shaped surface. Each guide groove has a depth of 0.2 mm to 0.5 mm and a width of 1 mm to 2 mm. The design of the guide grooves can further optimize the fluid flow path and reduce energy loss during the fluid diversion process.

[0013] As a preferred technical solution of this application, the scraper is made of polytetrafluoroethylene (PTFE) and has elastic sealing strips on both sides. The thickness of the elastic sealing strip is 0.5mm to 1mm, and it fits tightly against the surface of the heat exchange plate to ensure that the scraper will not damage the surface of the heat exchange plate during movement.

[0014] Compared with the prior art, the beneficial effects of this utility model are reflected in the following aspects:

[0015] With the uniform flow distribution components and guide elements installed, the fluid is rationally distributed before entering the fluid channels between the heat exchange plates, avoiding the problem of uneven fluid distribution. The diameter of the flow distribution holes on the flow distribution plate gradually decreases along the fluid flow direction. Combined with the arc-shaped surface and guide grooves of the guide elements, a stable fluid velocity field and pressure field can be formed, thereby improving heat transfer efficiency.

[0016] The micro-protrusions on the surface of the heat exchange plates disrupt the fluid boundary layer, enhancing turbulence and further improving heat transfer efficiency. Simultaneously, the application of a graphene coating improves the thermal conductivity and corrosion resistance of the heat exchange plates, extending the equipment's service life.

[0017] The cleaning device is designed to make heat exchanger maintenance more convenient. Deposits on the heat exchange plates can be removed by manually rotating the drive rod, eliminating the need to disassemble the equipment and reducing maintenance costs and operational complexity.

[0018] The supporting ribs on the back of the flow divider not only enhance the structural strength of the flow divider, but also reduce the impact force of the fluid on the flow divider, thus improving the operational stability of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention, showing the arrangement of the heat exchange body, the uniform flow distribution component, and the cleaning device.

[0020] Figure 2 This is a partially enlarged view of the uniform flow distribution component of this utility model, showing in detail the structural features of the flow distribution holes, flow guides and flow guide grooves on the flow distribution plate.

[0021] Figure 3 This is a schematic diagram of the surface structure of the heat exchange plate in this utility model, focusing on the distribution and size design of the micro-convex structure.

[0022] Figure 4 This is a schematic diagram of the working state of the cleaning device in this utility model, showing the movement of the scraper in the fluid channel and its contact relationship with the heat exchange plates.

[0023] Figure 5 This is a schematic diagram of the distribution of support ribs on the back of the diversion plate of this utility model, clearly showing the number, arrangement and cross-sectional shape of the support ribs.

[0024] The attached figures are labeled as follows:

[0025] 1. Heat exchanger body; 2. Heat exchanger plates; 3. Fluid channel; 4. Uniform flow distribution assembly; 5. Flow distribution plate; 6. Flow distribution hole; 7. Flow guide; 8. Flow guide groove; 9. Cleaning device; 10. Scraper; 11. Drive rod; 12. Rotary handle; 13. Micro-convex structure; 14. Support ribs. Detailed Implementation

[0026] This utility model provides an improved structure for a clean energy heat exchanger with high-efficiency heat transfer, the specific implementation of which is as follows. (Reference) Figures 1 to 5 The heat exchanger includes a heat exchange body 1, a uniform flow distribution assembly 4, and a cleaning device 9. The heat exchange body 1 consists of multiple parallel heat exchange plates 2, with fluid channels 3 formed between adjacent heat exchange plates 2. The uniform flow distribution assembly 4 is installed in the inlet area of ​​the heat exchange body 1 and connected to the ends of the heat exchange plates 2, used to uniformly distribute the fluid entering the heat exchanger. The cleaning device 9 is located outside the uniform flow distribution assembly 4 and is used to periodically remove scale buildup within the fluid channels 3.

[0027] The uniform flow distribution assembly 4 includes a flow distribution plate 5 and a flow guide 7. The flow distribution plate 5 is fixedly installed at the inlet end of the heat exchange plate 2, and its surface has several flow distribution holes 6, the diameter of which gradually decreases along the fluid flow direction. Supporting ribs 14 are provided on the back of the flow distribution plate 5, with 4 to 8 ribs evenly distributed on the back of the flow distribution plate 5. The supporting ribs 14 have a trapezoidal cross-section, a height of 2 mm to 5 mm, and a width of 3 mm to 6 mm. The design of the supporting ribs 14 enhances the structural strength of the flow distribution plate 5 while reducing the impact force of the fluid on the flow distribution plate 5. The flow guide 7 is located on the inner side of the flow distribution plate 5, and its shape is arc-shaped. Both ends are bolted to the adjacent heat exchange plate 2. The arc-shaped surface of the flow guide 7 has several flow grooves 8, which are evenly distributed circumferentially along the arc-shaped surface. Each flow groove 8 has a depth of 0.2 mm to 0.5 mm and a width of 1 mm to 2 mm. The design of the flow channel 8 optimizes the flow path of the fluid and reduces energy loss during the flow splitting process.

[0028] The cleaning device 9 includes a scraper 10 and a drive rod 11. The two side edges of the scraper 10 are embedded in the fluid channel 3 and contact the surface of the heat exchange plate 2. One end of the drive rod 11 is fixedly connected to the scraper 10, and the other end passes through the shell of the heat exchange body 1 and extends to the outside. A rotating handle 12 is provided at the end of the drive rod 11. The scraper 10 is made of polytetrafluoroethylene and has elastic sealing strips on both side edges. The thickness of the elastic sealing strips is 0.5 mm to 1 mm, and they are tightly fitted to the surface of the heat exchange plate 2. By manually rotating the rotating handle 12, the drive rod 11 moves the scraper 10 along the fluid channel 3, thereby removing the scale adhering to the surface of the heat exchange plate 2.

[0029] The heat exchange plate 2 has micro-protrusion structures 13 on its surface, which are distributed in a rectangular array on the inner surface of the heat exchange plate 2. Each micro-protrusion structure 13 has a height of 0.1 mm to 0.3 mm, a width of 0.5 mm to 1 mm, and a spacing of 2 mm to 5 mm between them. The heat exchange plate 2 is made of aluminum alloy and coated with a graphene coating with a thickness of 0.01 mm to 0.05 mm. The design of the micro-protrusion structures 13 breaks the fluid boundary layer and enhances the fluid turbulence effect, while the application of the graphene coating improves the thermal conductivity and corrosion resistance of the heat exchange plate 2.

[0030] In actual operation, after the fluid enters through the inlet of the heat exchanger body 1, it first passes through the uniform flow distribution component 4. When the fluid passes through the flow distribution holes 6 on the flow distribution plate 5, the fluid gradually accelerates within the holes 6 due to the gradually decreasing diameter along the fluid flow direction, forming a relatively stable velocity distribution. Subsequently, the fluid enters the arc-shaped surface area of ​​the guide component 7. The arc-shaped design of the guide component 7, combined with the function of the guide groove 8, further optimizes the fluid flow path, enabling the fluid to form a stable velocity and pressure field before entering the fluid channel 3. After entering the fluid channel 3, the fluid flows along the surface of the heat exchange plate 2. The presence of the micro-protrusion structure 13 breaks the fluid boundary layer, enhancing the turbulence effect and thus improving the heat transfer efficiency. In addition, the application of the graphene coating not only improves the thermal conductivity of the heat exchange plate 2 but also enhances its corrosion resistance, extending the service life of the equipment.

[0031] After the heat exchanger has been running for a period of time, scale may accumulate in the fluid channel 3. At this time, by manually rotating the handle 12, the drive rod 11 moves the scraper 10 along the fluid channel 3. The two edges of the scraper 10 are in close contact with the surface of the heat exchange plates 2, effectively removing scale adhering to the surface of the heat exchange plates 2 during movement. The elastic sealing strip design ensures that the scraper 10 will not damage the surface of the heat exchange plates 2 during movement, while also preventing scale residue. The cleaning device 9 design makes heat exchanger maintenance more convenient, allowing cleaning to be completed without disassembling the equipment, reducing maintenance costs and operational difficulty.

[0032] The supporting ribs 14 on the back of the flow divider 5 not only enhance the structural strength of the flow divider 5 but also reduce the impact force of the fluid on the flow divider 5, thus improving the operational stability of the equipment. The trapezoidal cross-section design of the supporting ribs 14 ensures strength while reducing fluid flow resistance. The arc-shaped surface of the guide member 7 and the guide groove 8 further optimize the fluid flow characteristics, reduce energy loss during the flow division process, and thus improve the overall performance of the heat exchanger.

[0033] The above content describes in detail the specific embodiments of this utility model, and the accompanying drawings further illustrate this. Figures 1 to 5 The diagram clearly illustrates the connection, position, and coordination relationships between the various components. The design of the uniform flow distribution component 4 achieves uniform fluid distribution within the heat exchanger, avoiding uneven fluid distribution. The application of the micro-protrusion structure 13 and graphene coating on the surface of the heat exchange plates 2 significantly improves heat transfer efficiency and extends the equipment's lifespan. The design of the cleaning device 9 makes equipment maintenance more convenient, reducing operational difficulty and maintenance costs.

[0034] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principles of this utility model are further explained below in conjunction with specific application scenarios.

[0035] In practical applications, this heat exchanger can be widely used in heat recovery systems in the clean energy sector. For example, in industrial waste heat recovery scenarios, high-temperature exhaust gas exchanges heat with low-temperature fluids through the heat exchanger, thereby achieving efficient energy utilization. The following are the specific working steps and principles of each component during equipment operation.

[0036] First, when the high-temperature exhaust gas enters from the inlet of the heat exchanger body 1, the fluid first contacts the flow divider plate 5 in the uniform flow divider assembly 4. The diameter of the flow divider orifices 6 on the flow divider plate 5 gradually decreases along the fluid flow direction. This design allows the fluid to gradually accelerate as it passes through the flow divider orifices 6, forming a relatively stable velocity distribution. The principle behind this optimized velocity distribution is that as the diameter of the flow divider orifice 6 decreases, the fluid velocity increases, while the fluid pressure decreases accordingly, thus forming a uniform velocity field at the outlet of the flow divider orifice 6. This process ensures that the fluid can enter the subsequent guide member 7 region in a relatively uniform state, avoiding problems such as local overheating or decreased heat transfer efficiency caused by uneven flow velocity.

[0037] Subsequently, the fluid enters the arc-shaped surface region of the guide member 7. The arc-shaped design of the guide member 7, combined with the guide grooves 8 on its surface, further optimizes the fluid flow path. The depth and width of the guide grooves 8 are precisely designed to create minute vortex effects as the fluid passes through. These vortices help eliminate velocity gradients in the fluid, thereby reducing energy loss. Furthermore, the circumferential distribution of the guide grooves 8 ensures that the fluid forms a stable velocity and pressure field before entering the fluid channel 3, laying the foundation for subsequent efficient heat transfer.

[0038] When the fluid enters the fluid channel 3, it flows along the surface of the heat exchange plate 2. The surface of the heat exchange plate 2 is provided with a rectangular array of micro-protrusion structures 13. The height, width, and spacing of these micro-protrusion structures 13 are optimized to effectively break the fluid boundary layer. The presence of the fluid boundary layer reduces heat transfer efficiency, while the micro-protrusion structures 13 enhance the turbulence effect of the fluid by disturbing the fluid boundary layer. The enhanced turbulence effect allows for more complete heat transfer between the fluid and the heat exchange plate 2, thereby significantly improving heat transfer efficiency. In addition, the graphene coating on the surface of the heat exchange plate 2 has high thermal conductivity and corrosion resistance, further improving heat transfer performance and extending the service life of the equipment.

[0039] During long-term operation of the equipment, scale may accumulate in the fluid channel 3. In this case, the operator can manually rotate the rotating handle 12 in the cleaning device 9, which drives the scraper 10 to move along the fluid channel 3 via the drive rod 11. The two sides of the scraper 10 are embedded in the fluid channel 3 and tightly adhere to the surface of the heat exchange plates 2. The scraper 10 is made of polytetrafluoroethylene (PTFE), whose low coefficient of friction ensures that the scraper will not damage the surface of the heat exchange plates 2 during movement. Simultaneously, the thickness of the elastic sealing strips on both sides of the scraper 10 is precisely controlled, effectively removing scale adhering to the surface of the heat exchange plates 2 while preventing scale residue. The design of the cleaning device 9 eliminates the need for disassembly for equipment maintenance, reducing maintenance costs and operational complexity.

[0040] The supporting ribs 14 on the back of the flow divider 5 play a crucial role in the operation of the equipment. There are 4 to 8 supporting ribs 14, evenly distributed on the back of the flow divider 5. Their trapezoidal cross-section design not only enhances the structural strength of the flow divider 5 but also reduces the impact force of the fluid on it. The height and width of the supporting ribs 14 are optimized to reduce fluid flow resistance while ensuring strength, thereby improving the overall operational stability of the equipment.

[0041] In summary, by combining the above steps and principles, this invention achieves uniform fluid distribution within the heat exchanger, optimizes the fluid flow path, enhances heat transfer efficiency, and provides convenient maintenance. These design features give this heat exchanger significant advantages in heat recovery systems within the clean energy sector, meeting the requirements for efficient heat transfer and long-term stable operation.

Claims

1. An improved structure for a clean energy heat exchanger with high-efficiency heat transfer, characterized in that, The heat exchanger includes a heat exchange body (1) and a uniform flow distribution assembly (4). The heat exchange body (1) includes a plurality of parallel heat exchange plates (2), and a fluid channel (3) is formed between adjacent heat exchange plates (2). The uniform flow distribution assembly (4) is installed in the inlet area of ​​the heat exchange body (1) and connected to the end of the heat exchange plates (2) for uniformly distributing the fluid entering the heat exchanger. A detachable cleaning device (9) is provided on the outside of the uniform flow distribution assembly (4) for removing scale buildup in the fluid channel (3).

2. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 1, characterized in that, The uniform flow distribution assembly (4) includes a flow distribution plate (5) and a flow guide (7). The flow distribution plate (5) is fixedly installed at the inlet end of the heat exchange plate (2). Several flow distribution holes (6) are opened on its surface. The diameter of each flow distribution hole (6) gradually decreases along the fluid flow direction. The flow guide (7) is located on the inner side of the flow distribution plate (5). Its shape is arc-shaped, and both ends of the flow guide (7) are respectively connected to the adjacent heat exchange plate (2) by bolts.

3. The improved structure of a high-efficiency heat transfer clean energy heat exchanger according to claim 2, characterized in that, The cleaning device (9) includes a scraper (10) and a drive rod (11). The two sides of the scraper (10) are embedded in the fluid channel (3) and in contact with the surface of the heat exchange plate (2). One end of the drive rod (11) is fixedly connected to the scraper (10), and the other end passes through the shell of the heat exchange body (1) and extends to the outside. The end of the drive rod (11) is provided with a rotating handle (12).

4. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 1, characterized in that, The surface of the heat exchange plate (2) is provided with micro-protrusion structures (13). The micro-protrusion structures (13) are distributed in a rectangular array on the inner surface of the heat exchange plate (2). The height of each micro-protrusion structure (13) is 0.1 mm to 0.3 mm, the width is 0.5 mm to 1 mm, and the spacing between the micro-protrusion structures (13) is 2 mm to 5 mm.

5. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 1, characterized in that, The heat exchange plate (2) is made of aluminum alloy and coated with a graphene coating on its surface. The thickness of the graphene coating is 0.01 mm to 0.05 mm.

6. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 2, characterized in that, The back of the diverter plate (5) is provided with supporting ribs (14). The number of supporting ribs (14) is 4 to 8, which are evenly distributed on the back of the diverter plate (5). The cross-sectional shape is trapezoidal, the height is 2 mm to 5 mm, and the width is 3 mm to 6 mm.

7. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 2, characterized in that, The flow guide (7) has a plurality of flow guide grooves (8) on its arc-shaped surface. The flow guide grooves (8) are evenly distributed along the circumference of the arc-shaped surface. The depth of each flow guide groove (8) is 0.2 mm to 0.5 mm and the width is 1 mm to 2 mm.

8. The improved structure of a clean energy heat exchanger with high-efficiency heat transfer according to claim 3, characterized in that, The scraper (10) is made of polytetrafluoroethylene and has elastic sealing strips on both sides. The thickness of the elastic sealing strips is 0.5 mm to 1 mm and they are tightly attached to the surface of the heat exchange plate (2).

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