Biomass boiler combustion flue gas waste heat convection recovery device

Abstract

The invention relates to the technical field of biomass boilers, in particular to a biomass boiler combustion flue gas waste heat convection recovery device which comprises a heat exchange assembly used for waste heat flue gas recovery, and the outer side of the heat exchange assembly is wrapped with a frame used for supporting the heat exchange assembly; the heat exchange assembly comprises an inlet pipe, and the inlet pipe extends to the position below the frame and penetrates through the frame to extend to the inner side. At least one group of heat pipes are arranged at the other end of the inlet pipe, radiating fins are arranged on one side of each heat pipe, and a fixed distance is kept between each radiating fin and the corresponding heat pipe; through the combination of the arranged heat exchange assembly and the arranged driving assembly, under the normal use of the heat dissipation fins and the heat pipes, the surfaces of the heat dissipation fins and the heat pipes can be treated, the heat exchange efficiency can be improved, meanwhile, auxiliary cleaning can be conducted during self-cleaning, defrosting and cleaning, and therefore stubborn stains can be treated.

Description

Technical Field

[0001] The invention relates to the technical field of biomass boilers, and in particular to a biomass boiler combustion flue gas waste heat convection recovery device. Background Art

[0002] Heat pipe waste heat recovery device is a device that uses heat pipe technology to recycle waste heat. Heat pipe is a highly efficient heat transfer element that uses the phase change (such as evaporation and condensation) of the working medium in the pipe to transfer heat. When one end of the heat pipe contacts the heat source, the working medium in the pipe absorbs heat and evaporates into gas. The gas then moves along the heat pipe to the other end, releases heat at the cold end of the pipe and condenses into liquid. The liquid flows back to the heat source end under the action of the pressure in the pipe, forming a cycle.

[0003] During the use of biomass boilers, the waste heat flue gas discharged will carry a large amount of heat. If it is not treated, it will cause environmental pollution and have a certain impact on the use of biomass boilers. Therefore, when using biomass boilers, a heat recovery component is generally added. These components are commonly used for heat pipe waste heat recovery, and the principle of use is basically heat exchange. During heat exchange, in order to improve efficiency, fins are generally used to increase the surface area and improve the exchange efficiency. However, due to the invasion of flue gas, dust will accumulate on the surface of the fins after long-term use; With the development of technology, the fin self-cleaning technology in the air-conditioning industry can be applied here to improve the cleanliness of the fins. However, its self-cleaning generally adopts the principle of evaporator frosting, and this method can only remove part of the stains when used. Stains with strong adhesion will lead to incomplete cleaning. In addition, there is a risk of scaling on the surface of the matching heat pipe, resulting in unstable use of the heat pipe. Based on this, it needs to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a biomass boiler combustion flue gas waste heat convection recovery device, which solves the problem that the existing fins and heat pipes are not cleaned thoroughly enough when used in the waste heat recovery device, resulting in the accumulation of stains during use.

[0005] The biomass boiler combustion flue gas waste heat convection recovery device of the present invention comprises a heat exchange component for waste heat flue gas recovery, and the outer side of the heat exchange component is wrapped with a frame for supporting the heat exchange component; The heat exchange assembly includes an inlet pipe, which extends to the bottom of the frame and penetrates the frame to extend to the inside; A heat pipe is arranged at the other end of the inlet pipe, and there is at least one group of the heat pipes. A heat dissipation fin is arranged on one side of the heat pipe, and a fixed distance is maintained between the heat dissipation fin and the heat pipe, and the heat dissipation fin is connected to the heat pipe; A driving assembly is arranged on the inner side of the frame at one side of the heat dissipation fins. The driving assembly includes a cleaning assembly. The cleaning assembly is in contact with the heat pipe and the heat dissipation fins.

[0006] As a further improvement of the present invention, the inlet pipe extends to the inner side of the frame and is connected to the heat pipe through a connecting port for circulating the waste heat flue gas.

[0007] As a further improvement of the present invention, a circulation tube is provided at one end of the heat dissipation fin, and one end of the circulation tube is connected to one end of the heat pipe to form a complete circulation path.

[0008] As a further improvement of the present invention, the driving assembly further comprises a driving motor, and two output shafts of the driving motor are each connected to a threaded rod, and the rod body of the threaded rod is combined with the cleaning assembly.

[0009] As a further improvement of the present invention, there are at least two cleaning components, which are symmetrically arranged and respectively disposed at one end of the heat pipe and the heat dissipation fin. The cleaning component includes a mating plate, and a threaded hole is opened on the plate body of the mating plate at a position corresponding to the threaded rod. The mating plate drives the threaded rod to reciprocate up and down through a driving motor.

[0010] As a further improvement of the present invention, a transverse plate is slidably connected to one side of the mating plate, a accommodating cavity is provided on the side of the transverse plate away from the mating plate, a slide rail is provided on the inner side of the accommodating cavity, and a pipe cleaning component and a fin cleaning component are slidably connected to the inner side of the slide rail.

[0011] As a further improvement of the present invention, the pipe cleaning component includes at least two symmetrically arranged clamps, a fixed distance is maintained between the two clamps, and the inner top and bottom of the clamps are both provided with an arc groove with one side open for combination with the outer side of the heat pipe.

[0012] As a further improvement of the present invention, a fixed distance is maintained between the two clamping plates for accommodating the heat pipe, a groove is provided on the inner side of the clamping plate, and a cleaning roller is provided in the groove for contacting the outer surface of the heat pipe.

[0013] As a further improvement of the present invention, the fin cleaning component includes at least two docking plates corresponding to the pipeline cleaning assembly, and a fixed distance is maintained between the two docking plates, and the distance is adapted to the fin.

[0014] As a further improvement of the present invention, an inner cavity is provided on one side of the two butt joint plates close to each other, and an air jet is provided on the inner side of the slot for cleaning the fins during condensation and defrosting.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention combines the heat exchange component and the drive component to process the surface of the heat dissipation fins and the heat pipes under normal use, and can improve the efficiency of heat exchange. At the same time, during self-cleaning and defrosting, auxiliary cleaning can be performed during cleaning, thereby processing stubborn stains. Moreover, during the processing, the two symmetrically arranged cleaning components are moved closer to and away from each other by using a driving motor, so that the need for reciprocating cleaning is met, and the fins and heat pipes can be processed synchronously; Furthermore, during the processing, the cleaning component can be adjusted according to the position of the slide rail, and can be adapted to different sizes of heat pipes and fins, thereby increasing the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of the heat exchange component and the frame combination of the present invention; Figure 2 It is a front view structural diagram of the heat exchange component and frame combination of the present invention; Figure 3 This is a schematic diagram of the inner front view of the heat exchange assembly and frame combination of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the AA section structure; Figure 5 This is a schematic diagram of the three-dimensional structure of the cleaning component of the present invention; Figure 6 This is a schematic diagram of the front view structure of the cleaning component of the present invention; Figure 7 It is a schematic diagram of the side view structure of the cleaning component of the present invention; Figure 8 It is a schematic diagram of the side view structure of the cleaning component of the present invention; Fig. 9 This is a front view structural diagram of the fin cleaning component of the present invention; Fig.10 This is a schematic diagram of the front view structure of the pipeline cleaning component of the present invention.

[0017] In the figure: 1. heat exchange component; 2. frame; 3. drive component; 11. Inlet pipe; 12. Heat pipe; 13. Circulation pipe; 14. Heat dissipation fins; 15. Connection port; 31. threaded rod; 32. cleaning assembly; 33. driving motor; 321. Fitting plate; 322. Horizontal plate; 323. Pipe cleaning component; 324. Fin cleaning component; 325. Slide rail; 326. Jet port; 327. Inner cavity; 328. Cleaning roller. DETAILED DESCRIPTION

[0018] The following will disclose multiple embodiments of the present invention with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0019] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The existing fins and heat pipes 12 used in the waste heat recovery device are not cleaned thoroughly enough, and stains will accumulate during use. Based on this, the present application provides a biomass boiler combustion flue gas waste heat convection recovery device, including a heat exchange component 1 for waste heat flue gas recovery, and the outer side of the heat exchange component 1 is wrapped with a frame 2 for supporting the heat exchange component 1; The heat exchange assembly 1 includes an inlet pipe 11, which extends to the bottom of the frame 2 and passes through the frame 2 to extend to the inside; A heat pipe 12 is disposed at the other end of the inlet pipe 11. There is at least one group of heat pipes 12. A heat dissipation fin 14 is disposed on one side of the heat pipe 12. A fixed distance is maintained between the heat dissipation fin 14 and the heat pipe 12. The heat dissipation fin 14 is connected to the heat pipe 12. A driving assembly 3 is disposed on the inner side of the frame 2 at one side of the heat dissipation fins 14 . The driving assembly 3 includes a cleaning assembly 32 . The cleaning assembly 32 is in contact with the heat pipes 12 and the heat dissipation fins 14 .

[0021] The heat exchange assembly 1 mainly includes an inlet pipe 11 and at least one group of heat pipes 12. The inlet pipe 11 extends to the bottom of the frame 2 and penetrates the frame 2 into the interior, providing a channel for the introduction of waste heat and flue gas. The other end of the inlet pipe 11 is connected to the heat pipe 12, which is used for heat conduction. The side of each group of heat pipes 12 is attached with heat dissipation fins 14, which are on the outside of the heat pipe 12 to form an efficient heat exchange surface.

[0022] The frame 2 is wrapped around the outside of the heat exchange assembly 1, and is mainly used to support and fix the heat exchange assembly 1 so that it remains stable during operation. The structural design of the frame 2 should ensure effective support for the heat exchange assembly 1 while not hindering the flow of smoke.

[0023] The driving assembly 3 is located inside the frame 2, opposite to one side of the heat dissipation fins 14. The driving assembly 3 includes one or more cleaning assemblies 32, which can contact the heat pipe 12 and the heat dissipation fins 14 to clean the surface. The driving assembly 3 is driven by a motor or other driving device, which can make the cleaning assembly 32 reciprocate on the surface of the heat exchange assembly 1.

[0024] The cleaning components 32 are designed to remove dirt on the surfaces of the heat sink fins 14 and the heat pipes 12. They can be brushes, scrapers or other mechanical devices that can effectively remove dust and dirt on the surfaces, thereby maintaining good heat exchange performance.

[0025] Working principle: The waste heat flue gas enters the heat exchange assembly 1 through the inlet pipe 11 , and after the heat exchange process between the heat pipe 12 and the heat dissipation fins 14 , the heat is effectively extracted from the flue gas.

[0026] The heat pipe 12 transfers heat from the flue gas to the heat dissipation fins 14 through phase change (evaporation and condensation) of the working medium (water, alcohol) inside the heat pipe 12. The heat dissipation fins 14 increase the surface area of ​​heat exchange and improve the heat exchange efficiency.

[0027] When the heat exchange assembly 1 is working, the cleaning assembly 32 reciprocates along the surface of the heat dissipation fins 14 and the heat pipes 12 through the action of the driving assembly 3 to remove the attached dust and dirt. This can avoid the accumulation of dirt on the surface of the fins and the heat pipes 12, thereby maintaining a high heat exchange efficiency.

[0028] The cleaning component 32 can perform cleaning periodically to prevent excessive dirt from affecting the heat exchange performance. The drive component 3 can be set to adjust the cleaning cycle and intensity as needed to adapt to different working environments.

[0029] By regularly cleaning the surfaces of the heat dissipation fins 14 and the heat pipes 12, dirt accumulation can be effectively prevented and a high heat exchange efficiency can be maintained, thereby ensuring that the device can maintain a high performance during long-term operation.

[0030] Regular cleaning can reduce the corrosion and damage to the equipment caused by dirt, thereby extending the service life of the heat exchange assembly 1 and the heat pipe 12 and reducing the maintenance and replacement frequency.

[0031] By effectively recovering and utilizing waste heat, energy waste is reduced and the energy efficiency of the overall system is improved, thereby reducing operating costs and energy consumption.

[0032] Effectively recovering waste heat from biomass boilers not only improves energy efficiency, but also reduces the impact of waste heat flue gas on the environment, helping to reduce greenhouse gas emissions and other pollutants.

[0033] Through the adjustable cleaning component 32 and the driving system, different sizes and types of heat pipes 12 and heat dissipation fins 14 can be adapted, making the device more widely applicable.

[0034] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The inlet pipe 11 extends to the inner side of the frame 2 and is connected to the heat pipe 12 through the connection port 15 for circulating the waste heat flue gas.

[0035] A circulation pipe 13 is disposed at one end of the heat dissipation fin 14 , and one end of the circulation pipe 13 is connected to one end of the heat pipe 12 to form a complete circulation path.

[0036] The driving assembly 3 further includes a driving motor 33 . Two output shafts of the driving motor 33 are each connected to a threaded rod 31 . The rod body of the threaded rod 31 is combined with a cleaning assembly 32 .

[0037] The inlet pipe 11 extends to the inner side of the frame 2 and is connected to the heat pipe 12 through the connection port 15. This design allows the waste heat flue gas to flow in from the inlet pipe 11 and exchange heat with the working medium in the heat pipe 12. Through the connection port 15, the inlet pipe 11 and the heat pipe 12 form a complete waste heat flue gas circulation path, which effectively utilizes the waste heat.

[0038] One end of the heat dissipation fin 14 is connected to a circulation pipe 13. One end of the circulation pipe 13 is connected to one end of the heat pipe 12 to form a complete heat exchange circulation path. After the waste heat flue gas passes through the heat exchange of the heat pipe 12, the heat is transferred to the heat dissipation fin 14, and then the treated gas or fluid is guided back to other parts of the system through the circulation pipe 13 to complete the heat recovery and utilization.

[0039] The driving assembly 3 includes a driving motor 33, and a threaded rod 31 is connected to each of its two output shafts. The threaded rod 31 is combined with the cleaning assembly 32, and the rotation of the driving motor 33 is transmitted to the cleaning assembly 32 through the threaded rod 31. The rotation of the threaded rod 31 causes the cleaning assembly 32 to reciprocate on the surface of the heat dissipation fins 14 and the heat pipe 12, thereby achieving automatic cleaning of the surface.

[0040] Specific process: The waste heat flue gas flows into the frame 2 through the inlet pipe 11 and contacts the heat pipe 12. The waste heat flue gas exchanges heat with the working medium of the heat pipe 12. The working medium in the heat pipe 12 absorbs heat and undergoes phase change, thereby extracting heat from the waste heat flue gas.

[0041] After absorbing the heat in the waste heat flue gas, the heat pipe 12 transfers the heat to the heat dissipation fins 14 through its phase change effect. The heat dissipation fins 14 increase the surface area of ​​heat exchange, thereby improving the heat transfer efficiency.

[0042] The circulation pipe 13 at one end of the heat dissipation fin 14 is connected to the heat pipe 12 to form a closed loop system. This design guides the treated gas or fluid back into the system, further optimizing the use of heat.

[0043] The driving motor 33 drives the cleaning assembly 32 to reciprocate through the threaded rod 31. The cleaning assembly 32 moves on the surface of the heat dissipation fins 14 and the heat pipes 12 to remove accumulated dust and dirt. The rotation of the threaded rod 31 enables the cleaning assembly 32 to cover all surface areas of the heat exchange assembly 1, thereby achieving comprehensive cleaning.

[0044] The design of the driving component 3 can enable the cleaning component 32 to automatically clean itself during the operation of the device, thereby maintaining the efficient operation of the heat exchange component 1.

[0045] The complete circulation path design ensures the effective utilization of the waste heat flue gas and improves the heat exchange efficiency. Through the efficient heat exchange between the heat pipe 12 and the heat dissipation fins 14, the heat in the waste heat flue gas can be fully recovered and utilized.

[0046] The design of the circulation pipe 13 ensures that the waste heat flue gas is effectively treated by the heat pipe 12 and the heat dissipation fins 14, and the treated gas or fluid is returned to the system, thereby enhancing the overall waste heat recovery efficiency.

[0047] The automatic cleaning function ensures that the cleaning assembly 32 can fully clean the surfaces of the heat sink fins 14 and the heat pipes 12 through the cooperation of the drive motor 33 and the threaded rod 31. This reduces the need for manual maintenance and ensures the cleanliness of the heat exchange surface, thereby maintaining efficient heat exchange performance.

[0048] By cleaning regularly, the corrosion and damage of dirt to the heat exchange component 1 is reduced, the service life of the equipment is extended, and equipment failure and maintenance costs caused by dirt accumulation are reduced.

[0049] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 as well as Figure 7There are at least two cleaning components 32, which are symmetrically arranged and are respectively arranged at one end of the heat pipe 12 and the heat dissipation fin 14. The cleaning component 32 includes a mating plate 321. The mating plate 321 has a threaded hole at a position corresponding to the threaded rod 31. The mating plate 321 drives the threaded rod 31 to reciprocate up and down through the driving motor 33.

[0050] A transverse plate 322 is slidably connected to one side of the mating plate 321 , a receiving cavity is provided on the side of the transverse plate 322 away from the mating plate 321 , a slide rail 325 is provided inside the receiving cavity, and a pipe cleaning component 323 and a fin cleaning component 324 are slidably connected to the inside of the slide rail 325 .

[0051] The symmetrical arrangement of the cleaning components 32 helps to evenly clean the surface of the entire heat exchange component 1, thereby improving the cleaning effect and heat exchange efficiency.

[0052] The mating plate 321 has a threaded hole on its body to facilitate connection with the threaded rod 31. The threaded rod 31 reciprocates up and down through the rotation of the driving motor 33, thereby driving the mating plate 321 to move, thereby cleaning the surfaces of the heat pipe 12 and the heat dissipation fins 14.

[0053] One side of the fitting plate 321 is slidably connected with a transverse plate 322, and a receiving cavity is provided on a side of the transverse plate 322 away from the fitting plate 321. A slide rail 325 is provided inside the receiving cavity, and a pipe cleaning component 323 and a fin cleaning component 324 are slidably connected inside the slide rail 325.

[0054] The pipe cleaning component 323 is used to clean the outer surface of the heat pipe 12 to ensure the effective heat exchange function of the heat pipe 12. The fin cleaning component 324 is used to clean the surface of the heat dissipation fin 14 to prevent dirt accumulation from affecting the heat exchange efficiency.

[0055] Working principle: The driving motor 33 rotates through its output shaft, driving the threaded rod 31 to rotate. The threaded rod 31 is connected to the fitting plate 321 through its threaded hole, so that the fitting plate 321 reciprocates up and down. This form of movement enables the fitting plate 321 to move on the surface of the heat pipe 12 and the heat dissipation fin 14 for preliminary cleaning.

[0056] The slide rail 325 in the receiving cavity on the horizontal plate 322 connects the pipe cleaning component 323 and the fin cleaning component 324. The movement of the fitting plate 321 causes the horizontal plate 322 and the cleaning components thereon to slide in the receiving cavity. The design of the slide rail 325 allows these cleaning components to slide along the surface of the heat pipe 12 and the heat dissipation fin 14, thereby performing a more detailed cleaning work.

[0057] The pipe cleaning component 323 focuses on cleaning the surface of the heat pipe 12 to remove accumulated dust and dirt. The fin cleaning component 324 cleans the heat dissipation fins 14 to ensure that the heat exchange effect of the fins is not affected by dust. During the cleaning process, the pipe and fin cleaning components 324 work together to achieve comprehensive cleaning.

[0058] The cleaning assembly 32 can be automatically cleaned by the control of the driving motor 33 without manual intervention. This mechanism ensures the high efficiency and reliability of the heat exchange device during long-term operation.

[0059] The symmetrically arranged cleaning components 32 can evenly clean the surfaces of the heat pipes 12 and the heat dissipation fins 14, ensuring the comprehensiveness and efficiency of the cleaning work. The design of the matching plate 321 and the cleaning components enables each area to be effectively cleaned.

[0060] The effective operation of the cleaning component can timely remove dirt on the heat pipe 12 and the heat dissipation fin 14, and maintain its efficient heat exchange performance, thereby reducing the reduction in heat exchange efficiency caused by dirt accumulation.

[0061] By cleaning regularly, corrosion and damage to the heat exchange component 1 caused by dirt are reduced, thereby extending the service life of the equipment. This preventive maintenance reduces equipment failure and replacement frequency.

[0062] The automated cleaning mechanism reduces the need for manual intervention, reduces maintenance costs and human resource input. This makes the operation of the equipment more economical and efficient.

[0063] The design of the cleaning component 32 enables the device to adapt to heat pipes 12 and heat dissipation fins 14 of different types and sizes, thereby improving the applicability and flexibility of the system.

[0064] See also Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 as well as Fig.10 The pipe cleaning component 323 includes at least two symmetrically arranged clamps, a fixed distance is maintained between the two clamps, and an arc groove with one side open is provided on the inner top and bottom of the clamp for combining with the outer side of the heat pipe 12.

[0065] A fixed distance is maintained between the two clamping plates for accommodating the heat pipe 12 . A groove is provided on the inner side of the clamping plate, and a cleaning roller 328 is provided in the groove for contacting the outer surface of the heat pipe 12 .

[0066] The fin cleaning component 324 includes at least two docking plates corresponding to the pipe cleaning assembly 32 , and a fixed distance is maintained between the two docking plates, and the distance is adapted to the fins.

[0067] An inner cavity 327 is provided on one side of the two butt joint plates close to each other, and an air jet 326 is provided on the inner side of the slot for cleaning the fins during condensation and defrosting.

[0068] The pipe cleaning component 323 includes at least two symmetrically arranged clamping plates. A fixed distance is maintained between these clamping plates to accommodate the heat pipe 12. The inner top and bottom of the clamping plates are both provided with arc grooves with one side open to ensure that the clamping plates can be tightly combined with the outer side of the heat pipe 12.

[0069] A groove is formed on the inner side of the clamping plate, and a cleaning roller 328 is disposed in the groove. The cleaning roller 328 is used to contact the outer surface of the heat pipe 12 and effectively remove dirt on the surface of the heat pipe 12 by rolling. The fixed spacing design enables the clamping plate to firmly wrap the heat pipe 12, thereby ensuring that the contact surface of the cleaning roller 328 is stable and improving the cleaning effect.

[0070] The fin cleaning component 324 includes at least two docking plates corresponding to the pipe cleaning assembly 32. A fixed spacing is maintained between the docking plates, which is adapted to the spacing of the heat dissipation fins 14 to ensure that the cleaning component can effectively contact the fins.

[0071] An inner cavity 327 is provided on one side of the butt joint plates close to each other, and an air jet 326 is provided inside the inner cavity 327. The air jet 326 is used to spray airflow or cleaning agent to the fins. When frost or dirt appears on the surface of the fins, the air jet 326 can efficiently clean and defrost.

[0072] Working principle: The clamping plates of the pipe cleaning component 323 are tightly combined with the outer side of the heat pipe 12 through their arc-shaped grooves, and the fixed spacing between the clamping plates ensures that the heat pipe 12 can be stably placed in the clamping plates to prevent movement during the cleaning process.

[0073] The cleaning roller 328 in the groove contacts the outer surface of the heat pipe 12 and removes dirt on the surface of the heat pipe 12 by rolling. The cleaning roller 328 rotates under the drive of the clamping plate so that every part of the heat pipe 12 can be cleaned.

[0074] The spacing of the docking plates is designed to match the spacing of the heat dissipation fins 14, ensuring that the docking plates can effectively contact the fins, and the fixed spacing between the docking plates maintains the accuracy of cleaning.

[0075] The air jet 326 sprays airflow or detergent to the fins during the fin cleaning process to remove frost or dirt on the fins. The airflow or detergent enters the inner cavity 327 through the air jet 326, thereby covering the surface of the fins to ensure a thorough cleaning effect.

[0076] The cleaning roller 328 can effectively contact the surface of the heat pipe 12 to remove the attached dust and dirt, thereby improving the cleaning effect. The fixed spacing design of the clamping plate ensures that the cleaning roller 328 can work stably and fully clean the outer surface of the heat pipe 12.

[0077] The design of the docking plate is adapted to the spacing between the heat dissipation fins 14, and the air jets 326 can effectively clean and defrost the fin surfaces to ensure the cleanliness of the fins.

[0078] By regularly cleaning the heat pipes 12 and the heat dissipation fins 14, the accumulation of dirt is avoided and the efficient operation of the heat exchange assembly 1 is maintained. This helps to ensure the heat exchange efficiency of the device in long-term use and reduce the performance degradation caused by dirt.

[0079] Regular cleaning reduces the corrosion and damage of dirt to the heat exchange component 1, thereby extending the service life of the equipment, avoiding failures and replacement frequency caused by dirt accumulation, and reducing maintenance costs.

[0080] The automated cleaning system reduces the need for manual intervention, making equipment maintenance easier and more efficient. The automation of the cleaning process improves work efficiency and reduces human resource input.

[0081] The design of the clamping plate and the cleaning roller 328 ensures the comprehensive cleaning of the surface of the heat pipe 12, and the design of the docking plate and the air jet 326 ensures the effective cleaning of the fin surface. These designs optimize the cleaning effect and enable the equipment to maintain the best operating state.

[0082] The design of the cleaning component 32 enables the device to adapt to heat pipes 12 and heat dissipation fins 14 of different types and sizes, thereby improving the flexibility and applicability of the system.

[0083] Efficient cleaning and maintenance functions ensure the stable operation of the heat exchange system and reduce the additional energy consumption caused by performance degradation. This not only improves the energy efficiency of the equipment, but also reduces the negative impact on the environment.

[0084] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A biomass boiler combustion flue gas waste heat convection recovery device, comprising a heat exchange component (1) for waste heat flue gas recovery, wherein the heat exchange component (1) is wrapped with a frame (2) on the outside for supporting the heat exchange component (1); Features: The heat exchange assembly (1) comprises an inlet pipe (11), wherein the inlet pipe (11) extends to the bottom of the frame (2) and penetrates the frame (2) to extend to the inside; A heat pipe (12) is provided at the other end of the inlet pipe (11), the heat pipe (12) being provided in at least one group, a heat dissipation fin (14) being provided on one side of the heat pipe (12), a fixed distance being maintained between the heat dissipation fin (14) and the heat pipe (12), and the heat dissipation fin (14) being connected to the heat pipe (12); A driving assembly (3) is provided on the inner side of the frame (2) at one side of the heat dissipation fins (14); the driving assembly (3) comprises a cleaning assembly (32); the cleaning assembly (32) is in contact with the heat pipe (12) and the heat dissipation fins (14).

2. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 1 is characterized by: The inlet pipe (11) extends to the inner side of the frame (2) and is connected to the heat pipe (12) through a connection port (15) for circulating waste heat flue gas.

3. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 1 is characterized in that: A circulation tube (13) is provided at one end of the heat dissipation fin (14), and one end of the circulation tube (13) is connected to one end of the heat pipe (12) to form a complete circulation path.

4. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 1 is characterized in that: The driving assembly (3) further comprises a driving motor (33), wherein two output shafts of the driving motor (33) are each connected to a threaded rod (31), and the rod body of the threaded rod (31) is combined with the cleaning assembly (32).

5. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 1 is characterized by: There are at least two cleaning components (32) which are symmetrically arranged and are disposed at one end of the heat pipe (12) and the heat dissipation fin (14). The cleaning component (32) comprises a mating plate (321). A threaded hole is provided on the mating plate (321) at a position corresponding to the threaded rod (31). The mating plate (321) drives the threaded rod (31) to reciprocate up and down via a driving motor (33).

6. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 5, characterized in that: A transverse plate (322) is slidably connected to one side of the mating plate (321); a receiving cavity is provided on a side of the transverse plate (322) away from the mating plate (321); a slide rail (325) is provided on the inner side of the receiving cavity; and a pipe cleaning component (323) and a fin cleaning component (324) are slidably connected to the inner side of the slide rail (325).

7. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 6, characterized in that: The pipeline cleaning component (323) comprises at least two symmetrically arranged clamping plates, a fixed distance is maintained between the two clamping plates, and an arc-shaped groove with one side open is provided on the inner top and bottom of the clamping plates for combining with the outer side of the heat pipe (12).

8. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 7, characterized in that: A fixed distance is maintained between the two clamping plates for accommodating the heat pipe (12); a groove is provided on the inner side of the clamping plate, and a cleaning roller (328) is provided in the groove for contacting the outer surface of the heat pipe (12).

9. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 6, characterized in that: The fin cleaning component (324) comprises at least two docking plates corresponding to the pipeline cleaning assembly (32), and a fixed distance is maintained between the two docking plates, and the distance is adapted to the fins.

10. The biomass boiler combustion flue gas waste heat convection recovery device according to claim 9, characterized in that: An inner cavity (327) is provided on one side of the two butt joint plates that are close to each other, and an air jet (326) is provided on the inner side of the slot for cleaning the fins during condensation and defrosting.

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