Double-flow enhanced heat transfer heat exchanger

Abstract

This invention relates to the field of heat exchange technology for wall-hung boilers, and discloses a dual-flow enhanced heat transfer heat exchanger, including a vertical plate. A groove is formed inside the vertical plate, and a connecting frame is slidably connected within the groove. A drive motor is installed inside the side plate of the wall-hung boiler, and a screw is fixedly connected to the output end of the drive motor. Mounting frames are fixedly connected to one side of each end of the connecting frame, and guide rods are fixedly connected within the mounting frames. A slider is slidably connected to the outer wall of the guide rod, and a spring is fixedly connected between the slider and the mounting frame. A suction pipe is fixedly connected to one side of the slider, and suction nozzles are uniformly fixedly connected to the outer wall of the suction pipe. The drive motor drives the screw to rotate, causing the connecting frame to slide along the groove of the vertical plate, and the suction pipe to reciprocate along the height of the heat exchanger body, achieving full-height dust removal coverage. The spring pushes the slider to slide along the guide rod, causing the suction nozzles on the suction pipe to tightly adhere to the surface of the heat exchange fins, removing dust and debris.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology for wall-hung boilers, specifically to a dual-flow enhanced heat transfer heat exchanger. Background Technology

[0002] Wall-hung boilers are the core equipment for home heating and domestic hot water supply, and their heat exchange performance directly determines the overall energy efficiency, stability, and service life of the unit. Currently, wall-hung boiler heat exchangers on the market are mainly divided into two categories: single-channel heat exchangers and dual-tube heat exchangers. While single-channel exchangers can achieve both heating and domestic hot water functions, are less prone to clogging, and have a long service life, they have the drawback of not being able to use heating and bathing simultaneously. Separating heating and bathing increases energy consumption. Therefore, a dual-flow enhanced heat transfer heat exchanger is needed to allow heating and bathing to occur simultaneously, reducing energy consumption and achieving energy-saving effects.

[0003] In traditional heat exchanger operation, dust, lint, and fibrous debris from the outside can enter the boiler's casing through the heat dissipation vents and accumulate on the surface and in the gaps of the heat exchange fins over time. This dust accumulation increases the thermal resistance of the fins, reducing the efficiency of heat exchange. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dual-flow enhanced heat transfer heat exchanger, which solves the problem that during the operation of traditional heat exchangers, external dust, lint, and fibrous debris enter the boiler's casing through the heat dissipation vents and accumulate on the surface and gaps of the heat exchange fins over a long period. This dust accumulation increases the thermal resistance of the fins, thus reducing the heat exchange efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dual-flow enhanced heat transfer heat exchanger, comprising a wall-hung boiler side plate and a heat exchanger body. Vertical plates are symmetrically fixedly connected to the top of the wall-hung boiler side plate. A sliding groove is formed inside the vertical plate, and a connecting frame is slidably connected within the groove. A drive motor is installed inside the wall-hung boiler side plate, and a screw is fixedly connected to the output end of the drive motor. A screw hole is formed at one end of the connecting frame, and one end of the screw passes through the screw hole and is rotatably connected to the top of one of the sliding grooves. Mounting frames are fixedly connected to one side of both ends of the connecting frame. A guide rod is fixedly connected inside the mounting frame, and a slider is slidably connected to the outer wall of the guide rod. A spring is fixedly connected between the slider and the mounting frame. A dust collection pipe is fixedly connected to one side of the slider, and dust collection nozzles are uniformly fixedly connected to the outer wall of the dust collection pipe. A dust collection assembly is installed inside the wall-hung boiler side plate.

[0006] By adopting the above technical solution, the drive motor is started, and its output end drives the screw to rotate. Through the threaded transmission, the connecting frame slides up and down along the slide groove of the vertical plate, thereby driving the two suction pipes to move back and forth along the height direction of the heat exchanger body, achieving full-height dust cleaning coverage. The suction pipes are slidably connected to the guide rod of the mounting frame through a slider. A spring always applies a spring force to the slider pointing towards the heat exchanger body, so that the suction nozzle on the suction pipe is tightly attached to the surface of the heat exchange fins. This achieves automatic adaptation to the manufacturing flatness error and installation deviation of the heat exchange fins, ensuring a stable distance between the suction port and the fins, avoiding suction attenuation, and thus cleaning dust and other debris on the heat exchanger body, ensuring heat exchange effect.

[0007] Preferably, the dust collection assembly includes a dust collection box, the top of which is fixedly connected to the inside of the side panel of the wall-mounted boiler, a rotating shaft is rotatably connected to the bottom of the dust collection box, fan blades are uniformly fixedly connected to the outer wall of the rotating shaft, and a filter plate is installed in the middle of the dust collection box.

[0008] Preferably, both sides of the dust collection box are fixedly connected to conveying pipes, and one end of each conveying pipe is fixedly connected to the outer wall of the two suction pipes.

[0009] Preferably, an exhaust port is provided on one side of the dust collection box, and a movable door is hinged to the other side of the dust collection box, with a fixing buckle fixedly connected to one side of the movable door.

[0010] Preferably, the heat exchanger body includes symmetrically arranged fixed baffles. The bottom of the fixed baffles is fixedly connected to the top of the side plate of the wall-hung boiler. Heat exchange sleeves are installed inside the two fixed baffles. Heat exchange fins are evenly installed on the outer wall of the heat exchange sleeves. Heating connectors are fixedly connected to both ends of the top of the heat exchange sleeves. Bathroom connectors are fixedly connected to both ends of the bottom of the heat exchange sleeves. Water boxes are fixedly connected to both ends of the heat exchange sleeves. One side of the heating connector and the bathroom connector is fixedly connected to one side of the water box. Electric heating wires are evenly fixedly connected to opposite sides of the two water boxes. The outer wall of the electric heating wires is disposed inside the heat exchange sleeves.

[0011] Preferably, a motor is installed inside the side panel of the wall-hung boiler, and a rotating shaft is fixedly connected to the output end of the motor. A cam is fixedly connected to the outer wall of the rotating shaft.

[0012] Preferably, a support plate is fixedly connected to the top of the wall-mounted boiler side panel, and a connecting rod is slidably connected to the outer wall of the support plate. A connecting plate is fixedly connected to one side of the connecting rod, and a second spring is fixedly connected to one side of the connecting plate. One end of the second spring is fixedly connected to one side of the support plate, and the inner wall of the second spring is sleeved on the outer wall of the connecting rod.

[0013] Preferably, a perforated plate is fixedly connected to the other side of each connecting rod, and the outer wall of the perforated plate is slidably connected to the heat exchange sleeve, and the outer wall of the perforated plate is slidably connected to the inside of the heating wire.

[0014] Preferably, the protruding end of the cam contacts one side of the connecting plate during movement.

[0015] Preferably, a drive wheel is fixedly connected to the outer wall of the rotating shaft, a timing belt is sleeved on the outer wall of the drive wheel, the outer wall of the timing belt is disposed inside the exhaust port, a driven wheel is sleeved on the inner wall of one end of the timing belt, and the inner wall of the driven wheel is fixedly connected to the outer wall of the rotating shaft.

[0016] Working principle: Heating return water enters the corresponding water box from the heating radiator joint on one side of the top, flows through the upper half of the heat exchange sleeve to the water box on the other side, is turned back through the split structure in the water box on that side, enters the upper half of the return sleeve of the heat exchange sleeve, flows back to the original water box, and then flows out from the heating radiator joint on the other side of the top. Cold water enters the corresponding water box from the bathroom joint on one side of the bottom, flows through the lower half of the heat exchange sleeve to the water box on the other side, is turned back through the split structure to the lower half of the return sleeve, flows back to the original water box, and then flows out from the bathroom joint on the other side of the bottom. When the ambient temperature is too low or the hot water demand is high, the electric heating wire between the two water boxes is energized to heat the fluid in the tube. When the machine is stopped, the electric heating wire operates at low power. When the motor starts, it drives the rotating shaft and cam to rotate synchronously. When the cam protrusion rotates to contact the connecting plate, it pushes the connecting plate to move towards the support plate and compresses the second spring. Through the connecting rod, it drives the perforated plate to slide inside the heat exchange sleeve. When the cam protrusion rotates away from the connecting plate, the second spring releases its elastic force to push the connecting plate to reset and drive the perforated plate to slide in the opposite direction, realizing continuous axial reciprocating motion. The heating wire is fixed in the center of the heat exchange sleeve axis, and the radius of the perforated plate is smaller than the inner diameter of the heating wire. The rotating shaft drives the drive wheel to rotate, which in turn drives the driven wheel via the synchronous belt, causing the rotating shaft at the bottom of the dust collection box and the fan blades to rotate and generate negative pressure. The drive motor drives the screw to rotate, and through the threaded transmission, the connecting frame slides up and down along the vertical plate slide groove, causing the dust suction pipe to move back and forth along the height direction of the heat exchanger. A spring pushes the slider to make the dust suction nozzle fit against the fin surface. The negative pressure is transmitted to the dust suction pipe through the conveying pipe, sucking the dust into the dust collection box. The dust-laden gas is filtered by the filter plate and then the air is discharged from the exhaust port.

[0017] This invention provides a dual-flow enhanced heat transfer heat exchanger. It has the following beneficial effects: 1. This invention, by starting the drive motor, drives the screw to rotate, which in turn drives the connecting frame to slide up and down along the groove of the vertical plate through threaded transmission. This, in turn, drives the two suction pipes to move back and forth along the height of the heat exchanger body, achieving full-height dust cleaning coverage. The suction pipes are slidably connected to the guide rod of the mounting frame through a slider. A spring always applies a spring force to the slider pointing towards the heat exchanger body, ensuring that the suction nozzles on the suction pipes are tightly fitted to the surface of the heat exchange fins. This achieves automatic adaptation to manufacturing flatness errors and installation deviations of the heat exchange fins, ensuring a stable distance between the suction port and the fins, avoiding suction attenuation, and thus cleaning dust and other debris on the heat exchanger body, ensuring heat exchange efficiency.

[0018] 2. In this invention, a motor drives a rotating shaft and a cam to rotate synchronously. When the cam protrusion rotates to contact the connecting plate, it pushes the connecting plate towards the support plate and compresses the spring. The connecting rod drives the perforated plate to slide inside the heat exchange sleeve. When the cam protrusion rotates away from the connecting plate, the spring releases its elastic force to push the connecting plate back to its original position, causing the perforated plate to slide in the opposite direction, thus achieving continuous axial reciprocating motion. This forces the fluid to pass through the openings in the perforated plate, forming periodic jets and vortices, continuously disrupting the laminar sublayer of the tube wall, thereby increasing the convective heat transfer coefficient inside the tube. At the same time, the uniform fluid disturbance avoids uneven heat transfer caused by excessively low local flow velocities. The fluid disturbance generated by the reciprocating motion of the perforated plate can offset some of the fluid-induced vibration, reducing the risk of tube bundle resonance.

[0019] 3. In this invention, heating return water enters the corresponding water box from the top side radiator connector, flows through the upper half of the heat exchange sleeve to the other side water box, is turned back through the split structure inside the water box, enters the upper half return sleeve of the heat exchange sleeve, flows back to the original side water box, and then flows out from the top side radiator connector. Cold water enters the corresponding water box from the bottom side bathroom connector, flows through the lower half of the heat exchange sleeve to the other side water box, is turned back through the split structure to the lower half return sleeve, flows back to the original side water box, and then flows out from the bottom side bathroom connector. When the ambient temperature is too low or the hot water demand is high, the electric heating wire between the two water boxes is energized to heat the fluid inside the tube. When the machine is stopped, the electric heating wire operates at low power, realizing the dual functions of heating and domestic hot water integration on one heat exchanger body. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a partial structural diagram of the wall-hung boiler side panel of the present invention; Figure 3 This is a partial structural diagram of the heat exchanger sleeve of the present invention; Figure 4 This is a partial structural diagram of the dust collection box of the present invention; Figure 5 This is a partial structural diagram of the vertical plate of the present invention; Figure 6 This is a partial structural diagram of the vacuum tube of the present invention; Figure 7 This is a schematic diagram of the heat exchanger body structure of the present invention.

[0021] Among them, 1. Wall-hung boiler side panel; 101. Heat exchanger body; 2. Vertical plate; 201. Slide groove; 202. Connecting frame; 203. Drive motor; 204. Screw; 205. Mounting frame; 206. Guide rod; 207. Slider; 208. Spring 1; 209. Dust suction pipe; 210. Dust suction nozzle; 3. Dust collection box; 301. Rotating shaft; 302. Fan blade; 303. Filter plate; 304. Conveying pipe; 305. Exhaust port; 306. 1. Movable door; 307. Fixing buckle; 4. Fixing baffle; 401. Heat exchange sleeve; 402. Heat exchange fins; 403. Heating connector; 404. Bathroom connector; 405. Heating wire; 406. Water box; 5. Motor 1; 501. Rotating shaft; 502. Cam; 6. Support plate; 601. Connecting rod; 602. Connecting plate; 603. Spring 2; 604. Perforated plate; 7. Drive wheel; 701. Synchronous belt; 702. Driven wheel. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see the appendix Figure 1 - Appendix Figure 6 This invention provides a dual-flow enhanced heat transfer heat exchanger, including a wall-hung boiler side plate 1 and a heat exchanger body 101. Vertical plates 2 are symmetrically fixedly connected to the top of the wall-hung boiler side plate 1. A sliding groove 201 is formed inside the vertical plate 2, and a connecting frame 202 is slidably connected within the sliding groove 201. A drive motor 203 is installed inside the wall-hung boiler side plate 1, and a screw 204 is fixedly connected to the output end of the drive motor 203. A screw hole is formed at one end of the connecting frame 202, and one end of the screw 204 passes through the screw hole and rotates. The top of one of the slide grooves 201 is dynamically connected. The two ends of the connecting frame 202 are fixedly connected to the mounting frame 205. The mounting frame 205 is fixedly connected to the guide rod 206. The outer wall of the guide rod 206 is slidably connected to the slider 207. The slider 207 and the mounting frame 205 are fixedly connected to the spring 208. The side of the slider 207 is fixedly connected to the dust suction pipe 209. The outer wall of the dust suction pipe 209 is evenly fixedly connected to the dust suction nozzle 210. The dust suction assembly is installed inside the side plate 1 of the wall-mounted boiler.

[0024] Specifically, during the operation of the wall-hung boiler, external dust, lint, and fibrous debris enter the boiler's casing through the heat dissipation vents and accumulate on the surface and in the gaps of the heat exchange fins 402 of the heat exchanger over a long period. This dust accumulation increases the thermal resistance of the fins, reducing heat exchange efficiency. Therefore, by starting the drive motor 203, its output end drives the screw 204 to rotate. Through threaded transmission, the connecting bracket 202 slides up and down along the slide groove 201 of the vertical plate 2, thereby driving the two dust suction pipes 209 to reciprocate along the height direction of the heat exchanger body 101, achieving full-height cleaning. The dust removal system covers a wide area. The suction pipe 209 is slidably connected to the guide rod 206 of the mounting frame 205 via the slider 207. The spring 208 always applies a spring force to the slider 207 pointing towards the heat exchanger body 101, so that the suction nozzle 210 on the suction pipe 209 is tightly attached to the surface of the heat exchange fins 402. This achieves automatic adaptation to the manufacturing flatness error and installation deviation of the heat exchange fins 402, ensuring a stable distance between the suction port and the fins, avoiding suction attenuation, and thus cleaning dust and other debris on the heat exchanger body 101 to ensure heat exchange effect.

[0025] Please see the appendix Figure 1 - Appendix Figure 6 The dust collection assembly includes a dust collection box 3. The top of the dust collection box 3 is fixedly connected to the side plate 1 of the wall-mounted boiler. The bottom of the dust collection box 3 is rotatably connected to a rotating shaft 301. Fan blades 302 are evenly fixedly connected to the outer wall of the rotating shaft 301. A filter plate 303 is installed in the middle of the dust collection box 3. Both sides of the dust collection box 3 are fixedly connected to conveying pipes 304, and one end of the conveying pipes 304 is fixedly connected to the outer wall of the two suction pipes 209 respectively. An exhaust port 305 is provided on one side of the dust collection box 3, and a movable door 306 is hinged to the other side of the dust collection box 3. A fixing buckle 307 is fixedly connected to one side of the movable door 306.

[0026] Specifically, the rotating shaft 301 drives the fan blades 302 to rotate at high speed, creating a negative pressure environment inside the dust collection box 3. The negative pressure inside the dust collection box 3 is transmitted to the suction pipe 209 through the conveying pipe 304, causing a high-speed airflow at the suction nozzle 210. This airflow draws dust, lint, and debris from the surface and gaps of the heat exchange fins 402 into the suction pipe 209, and then into the dust collection box 3 through the conveying pipe 304. After the dust-laden gas is filtered by the filter plate 303, clean air is discharged from the exhaust port 305, while the dust is trapped on the filter plate 303. When dust accumulates to a certain level in the dust collection box 3, open the fixing buckle 307 on the movable door 306 to clean or replace the filter plate 303. The operation is simple and convenient.

[0027] Please see the appendix Figures 1-3 Appendix Figure 7The heat exchanger body 101 includes symmetrically arranged fixed baffles 4. The bottom of the fixed baffles 4 is fixedly connected to the top of the wall-mounted boiler side plate 1. Heat exchange sleeves 401 are installed inside the two fixed baffles 4. Heat exchange fins 402 are evenly installed on the outer wall of the heat exchange sleeves 401. Heating connectors 403 are fixedly connected to the top two ends of the heat exchange sleeves 401. Bathroom connectors 404 are fixedly connected to the bottom two ends of the heat exchange sleeves 401. Water boxes 406 are fixedly connected to both ends of the heat exchange sleeves 401. One side of the heating connectors 403 and bathroom connectors 404 is fixedly connected to one side of the water box 406. Electric heating wires 405 are evenly fixedly connected to the opposite sides of the two water boxes 406. The outer wall of the electric heating wires 405 is set inside the heat exchange sleeves 401.

[0028] Specifically, the heating return water enters the water box 406 on one side from the heating radiator joint 403 on the top side, flows through the upper part of the heat exchange sleeve 401 to the other water box 406, completing the first heat exchange process. Then, it is turned back through the split structure inside the other water box 406, enters the upper part of the return sleeve of the heat exchange sleeve 401, flows back to the water box 406 on one side, and finally flows out from the heating radiator joint 403 on the other side of the top, entering the heating system.

[0029] Cold water enters one side of the water box 406 from the bathroom connector 404 on the bottom side, flows through the lower half of the heat exchange sleeve 401 to the other side of the water box 406, completing the first heat exchange process. Similarly, it is turned back through the split structure of the other side of the water box 406, enters the lower half of the return sleeve of the heat exchange sleeve 401, flows back to one side of the water box 406, and finally flows out from the bathroom connector 404 on the other side of the bottom for user use. This realizes the integration of heating and domestic hot water functions on one heat exchanger body 101. When the ambient temperature is too low or the demand for hot water is high, the electric heating wire 405 fixed between the two water boxes 406 is energized and heats up, directly heating the fluid in the heat exchange sleeve 401 to achieve rapid temperature rise. When the machine is stopped, the electric heating wire 405 operates at low power to prevent the fluid in the tube from freezing. The heat exchange fins 402 on the outer wall of the heat exchange tube 401 significantly increase the contact area with air. When the air outside the tube flows laterally across the fins, it forms a cross-current counter-current heat exchange with the fluid inside the tube, thereby improving the heat exchange efficiency.

[0030] Please see the appendix Figure 1 - Appendix Figure 4 The wall-hung boiler side panel 1 is equipped with a motor 5. The output end of the motor 5 is fixedly connected to a rotating shaft 501. The outer wall of the rotating shaft 501 is fixedly connected to a cam 502. A support plate 6 is fixedly connected to the top of the wall-mounted boiler side panel 1. A connecting rod 601 is evenly slidably connected to the outer wall of the support plate 6. A connecting plate 602 is fixedly connected to one side of the connecting rod 601. A second spring 603 is evenly fixedly connected to one side of the connecting plate 602. One end of the second spring 603 is fixedly connected to one side of the support plate 6. The inner wall of the second spring 603 is sleeved on the outer wall of the connecting rod 601. On the other side of the connecting rod 601, a perforated plate 604 is fixedly connected. The outer wall of the perforated plate 604 is slidably connected inside the heat exchange sleeve 401, and the outer wall of the perforated plate 604 is slidably connected inside the electric heating wire 405.

[0031] When the protruding end of the cam 502 moves, it contacts one side of the connecting plate 602.

[0032] Specifically, after motor 5 starts, its output drives the rotating shaft 501 and cam 502 to rotate synchronously. When the protruding end of cam 502 rotates to contact the connecting plate 602, it pushes the connecting plate 602 to move towards the support plate 6, compressing the second spring 603. Simultaneously, through the connecting rod 601, it drives all the perforated plates 604 to slide away from the connecting plate 602 within the heat exchange sleeve 401. When the protruding end of cam 502 rotates away from the connecting plate 602, the compressed second spring 603 releases its elastic force, pushing the connecting plate 602 back to its original position, thereby causing the perforated plates 604 to slide closer to the connecting plate 602. In the circulation, the perforated plate 604 achieves continuous axial reciprocating motion within the heat exchange sleeve 401. During the reciprocating motion of the perforated plate 604, the fluid is forced to pass through the openings on the perforated plate 604, forming periodic jets and vortices downstream of the plate. This continuously disrupts the laminar sublayer of the tube wall, thereby increasing the convective heat transfer coefficient inside the tube. At the same time, the uniform fluid disturbance avoids uneven heat transfer caused by excessively low local flow velocities. The fluid disturbance generated by the reciprocating motion of the perforated plate 604 can offset some of the fluid-induced vibrations, reducing the risk of tube bundle resonance. The heating wire 405 is fixed in the center of the heat exchange sleeve 401 via water boxes 406 at both ends. The radius of the perforated plate 604 is smaller than the inner diameter of the heating wire 405, so that the perforated plate 604 has no contact with the heating wire 405 when it reciprocates, thus completely avoiding the risk of scratching, wear and short circuit.

[0033] Please see the appendix Figure 1 - Appendix Figure 4 A drive wheel 7 is fixedly connected to the outer wall of the rotating shaft 501. A timing belt 701 is sleeved on the outer wall of the drive wheel 7. The outer wall of the timing belt 701 is located inside the exhaust port 305. A driven wheel 702 is sleeved on the inner wall of one end of the timing belt 701. The inner wall of the driven wheel 702 is fixedly connected to the outer wall of the rotating shaft 301.

[0034] Specifically, when the rotating shaft 501 rotates, the driving wheel 7 fixed at its end rotates synchronously, driving the driven wheel 702 to rotate through the synchronous belt 701. The driven wheel 702 then drives the rotating shaft 301 at the bottom of the dust collection box 3 to rotate. The rotating shaft 301 drives the fan blade 302 to rotate at high speed, creating a negative pressure environment inside the dust collection box 3, providing power for dust collection and cleaning.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-flow enhanced heat transfer heat exchanger, comprising a wall-hung boiler side plate (1) and a heat exchanger body (101), characterized in that: A vertical plate (2) is symmetrically fixedly connected to the top of the wall-mounted boiler side plate (1). A sliding groove (201) is provided inside the vertical plate (2). A connecting frame (202) is slidably connected in the sliding groove (201) of the vertical plate (2). A drive motor (203) is installed in the wall-mounted boiler side plate (1). A screw (204) is fixedly connected to the output end of the drive motor (203). A screw hole is provided at one end of the connecting frame (202). One end of the screw (204) passes through the screw hole and is rotatably connected to the top of one of the sliding grooves (201). Mounting frames (205) are fixedly connected to one side of both ends of the mounting frame (202). A guide rod (206) is fixedly connected inside the mounting frame (205). A slider (207) is slidably connected to the outer wall of the guide rod (206). A spring (208) is fixedly connected between the slider (207) and the mounting frame (205). A dust suction pipe (209) is fixedly connected to one side of the slider (207). Dust suction nozzles (210) are evenly fixedly connected to the outer wall of the dust suction pipe (209). A dust suction assembly is installed inside the side plate (1) of the wall-mounted boiler.

2. The dual-flow enhanced heat transfer heat exchanger according to claim 1, characterized in that: The dust collection assembly includes a dust collection box (3), the top of which is fixedly connected to the side plate (1) of the wall-mounted boiler, a rotating shaft (301) is rotatably connected to the bottom of the dust collection box (3), fan blades (302) are evenly fixedly connected to the outer wall of the rotating shaft (301), and a filter plate (303) is installed in the middle of the dust collection box (3).

3. A dual-flow enhanced heat transfer heat exchanger according to claim 2, characterized in that: Both sides of the dust collection box (3) are fixedly connected to conveying pipes (304), and one end of the conveying pipes (304) is fixedly connected to the outer wall of the two suction pipes (209).

4. A dual-flow enhanced heat transfer heat exchanger according to claim 3, characterized in that: The dust collection box (3) has an exhaust port (305) on one side and a movable door (306) hinged on the other side. A fixing buckle (307) is fixedly connected to one side of the movable door (306).

5. A dual-flow enhanced heat transfer heat exchanger according to claim 1, characterized in that: The heat exchanger body (101) includes symmetrically arranged fixed baffles (4). The bottom of the fixed baffles (4) is fixedly connected to the top of the wall-mounted boiler side plate (1). Heat exchange sleeves (401) are installed in the two fixed baffles (4). Heat exchange fins (402) are evenly installed on the outer wall of the heat exchange sleeves (401). Heating connectors (403) are fixedly connected to the top two ends of the heat exchange sleeves (401). Bathroom connectors (404) are fixedly connected to the bottom two ends of the heat exchange sleeves (401). Water boxes (406) are fixedly connected to both ends of the heat exchange sleeves (401). One side of the heating connectors (403) and bathroom connectors (404) is fixedly connected to one side of the water box (406). Electric heating wires (405) are evenly fixedly connected to the opposite side of the two water boxes (406). The outer wall of the electric heating wires (405) is set inside the heat exchange sleeves (401).

6. A dual-flow enhanced heat transfer heat exchanger according to claim 1, characterized in that: The wall-mounted boiler side panel (1) is equipped with a motor (5), the output end of the motor (5) is fixedly connected to a rotating shaft (501), and the outer wall of the rotating shaft (501) is fixedly connected to a cam (502).

7. A dual-flow enhanced heat transfer heat exchanger according to claim 6, characterized in that: A support plate (6) is fixedly connected to the top of the wall-mounted boiler side plate (1). A connecting rod (601) is evenly slidably connected to the outer wall of the support plate (6). A connecting plate (602) is fixedly connected to one side of the connecting rod (601). A second spring (603) is evenly fixedly connected to one side of the connecting plate (602). One end of the second spring (603) is fixedly connected to one side of the support plate (6). The inner wall of the second spring (603) is sleeved on the outer wall of the connecting rod (601).

8. A dual-flow enhanced heat transfer heat exchanger according to claim 7, characterized in that: The other side of each connecting rod (601) is fixedly connected to a perforated plate (604), the outer wall of the perforated plate (604) is slidably connected inside the heat exchange sleeve (401), and the outer wall of the perforated plate (604) is slidably connected inside the electric heating wire (405).

9. A dual-flow enhanced heat transfer heat exchanger according to claim 8, characterized in that: The protruding end of the cam (502) contacts one side of the connecting plate (602) when it moves.

10. A dual-flow enhanced heat transfer heat exchanger according to claim 6, characterized in that: The outer wall of the rotating shaft (501) is fixedly connected to the drive wheel (7), the outer wall of the drive wheel (7) is fitted with a timing belt (701), the outer wall of the timing belt (701) is located inside the exhaust port (305), the inner wall of one end of the timing belt (701) is fitted with a driven wheel (702), and the inner wall of the driven wheel (702) is fixedly connected to the outer wall of the rotating shaft (301).

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