Modularized flue type extruded aluminum condensation heat exchanger

Abstract

The modular flue type extruded aluminum condensing heat exchanger comprises a water storage tank and further comprises a U-shaped pipe and a heat exchange mechanism, the U-shaped pipe is fixedly connected to the top of the water storage tank, one end of the U-shaped pipe communicates with a water conveying pipe, one end of the water conveying pipe communicates with the bottom of the side wall of the water storage tank, and the two ends of the U-shaped pipe communicate with four first clamping sleeves correspondingly; the number of the heat exchange mechanisms is eight, each heat exchange mechanism comprises a cooling cylinder and a ventilation pipe, the ventilation pipe is fixedly connected to the middle of the cooling cylinder, the two ends of the ventilation pipe extend to the outside of the cooling cylinder, a plurality of fins are fixedly connected to the inner wall of the ventilation pipe, and a water inlet is formed in the position, adjacent to the ventilation pipe, of the bottom of the cooling cylinder; the water inlet is movably clamped with the first clamping sleeve; a water outlet is formed in one end, adjacent to the breather pipe, of the top of the cooling cylinder; through the design of the heat exchange mechanism, water films attached to the surfaces of the fins can be scraped off, and therefore the heat exchange efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, specifically to a modular flue-type extruded aluminum condensing heat exchanger. Background Technology

[0002] Gas appliances such as gas water heaters and gas-fired boilers produce high-temperature flue gas during combustion. Directly releasing this flue gas into the atmosphere wastes energy. Therefore, condensing heat exchangers are used to recover the sensible heat of the flue gas, achieving energy conservation and environmental protection. Currently, most condensing heat exchangers on the market are made of stainless steel, which is widely used due to its excellent corrosion resistance. However, stainless steel has poor thermal conductivity and high cost. Now, the industry is exploring the use of aluminum alloys. Aluminum has a high thermal conductivity, is low in cost, lightweight, and easy to process. The aluminum extrusion process involves forcing a heated aluminum rod through a mold with a specific cross-sectional shape under high pressure, thus forming a profile with multiple parallel flow channels inside and complex fins on the outside in one piece.

[0003] A search revealed a Chinese patent with publication number CN109827335B, which discloses a fully modular flue-type extruded aluminum condensing heat exchanger. This heat exchanger includes multiple extruded aluminum heat exchange units, multiple refrigerant flow elements, an upper isobaric flue, a condensation tray, a header, and a sealing cover. The extruded aluminum heat exchange units utilize a highly efficient and mature extrusion aluminum process. Its excellent structural design provides stable connection, positioning, and sealing structures, along with superior heat exchange performance. An axisymmetric or centrosymmetric comb-shaped inner fin structure and surface corrugations optimize the temperature field distribution and expand the effective heat exchange area. Various sizes of heat exchangers can be configured according to heat exchange power and site requirements, offering flexibility. A dual-channel configuration can be selected, which can be used in conjunction with heat pump units or directly supply domestic hot water to improve heat exchange efficiency and achieve energy cascade utilization. The all-bolted connection ensures reliable sealing while facilitating disassembly and maintenance. Welding can also be used to prevent stress corrosion cracking. The modular flue-type extruded aluminum heat exchanger, using an extrusion process, offers superior performance at a competitive price.

[0004] In the above technologies, although the heat exchange area can be increased through fin design, in actual use, the moisture in the flue gas will condense into liquid after contacting the fins and form a water film on the fins. This water film will block the subsequent flue gas from directly contacting the fins, thus affecting the heat exchange efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a modular flue-type extruded aluminum condensing heat exchanger to solve the problem that existing condensing heat exchangers are not easy to remove the water film on the fin surface.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modular flue-type extruded aluminum condensing heat exchanger, including a water storage tank, and further comprising: A U-shaped tube is fixedly connected to the top of the water storage tank. One end of the U-shaped tube is connected to a water supply pipe, and one end of the water supply pipe is connected to the bottom of the side wall of the water storage tank. Four first clamps are connected to both ends of the U-shaped tube respectively. The heat exchange mechanism is provided in eight parts. Each heat exchange mechanism includes a cooling cylinder and a vent pipe. The vent pipe is fixedly connected to the middle of the cooling cylinder. Both ends of the vent pipe extend to the outside of the cooling cylinder. Multiple fins are fixedly connected to the inner wall of the vent pipe. A water inlet is provided at the bottom of the cooling cylinder adjacent to the vent pipe. The water inlet is movably engaged with the first clamping sleeve. A water outlet is provided at the top of the cooling cylinder adjacent to the vent pipe.

[0007] Preferably, a rotating shaft is rotatably connected to one end of the cooling cylinder, the top of the rotating shaft extends into the water outlet and is fixedly connected to a turbine, a first cylinder is rotatably connected to the middle of the rotating shaft, a first path groove is provided on the side wall of the first cylinder, a collar is slidably connected to one end of the vent pipe inside the cooling cylinder, a first sliding pin is fixedly connected to one end of the collar, the first sliding pin is slidably connected to the first path groove, and stirring blades are fixedly connected to both ends of the collar.

[0008] Preferably, a first ratchet is fixedly connected to the top of the first cylinder, and a first spring telescopic rod is fixedly connected to one end of the first ratchet on the inner wall of the cooling cylinder. A first pawl adapted to the first ratchet is fixedly connected to one end of the first spring telescopic rod.

[0009] Preferably, a spiral spring is fixedly connected to the top of the first ratchet, one end of the spiral spring is fixedly connected to a rotating shaft, and a second ratchet is fixedly connected to the rotating shaft above the spiral spring. A second spring telescopic rod is fixedly connected to one end of the second ratchet on the inner wall of the cooling cylinder, and a second pawl adapted to the second ratchet is fixedly connected to one end of the second spring telescopic rod. The ratchet teeth of the first ratchet and the second ratchet are in opposite directions.

[0010] Preferably, a connecting shaft is rotatably connected inside the vent pipe, and a second cylinder is fixedly connected to the middle of the connecting shaft. The second cylinder has a second path groove on its side wall, and a bushing is fitted at one end of the second cylinder. A second sliding pin is fixedly connected to one end of the inner wall of the bushing, and the second sliding pin is slidably connected to the second path groove. A plurality of mounting rods are fixedly connected to one end of the outer wall of the bushing, and a plurality of U-shaped scrapers are fixedly connected to one end of each mounting rod. The U-shaped scrapers are slidably connected to the fins.

[0011] Preferably, a drive shaft is rotatably connected to one end of the vent pipe. A first bevel gear is fixedly connected to both the end of the drive shaft inside the cooling cylinder and the bottom of the rotating shaft. The two first bevel gears mesh with each other. A second bevel gear is fixedly connected to both the end of the drive shaft inside the vent pipe and the bottom of the connecting shaft. The two second bevel gears mesh with each other.

[0012] Preferably, a water collection box is fixedly connected to the center of the top of the water storage tank. Four second clamps are connected to both ends of the water collection box. The second clamps are movably engaged with the bottom of the vent pipe. A drain pipe is connected to one end of the bottom of the water collection box. The bottom of the water collection box is located at one end of the drain pipe that is lower than the other end. An air outlet is provided on the side wall of the water collection box above the drain pipe.

[0013] Preferably, two cylinders are fixedly connected to the top two ends of the water storage tank, and the output ends of the four cylinders extend into the interior of the water storage tank and are all fixedly connected to a pressure plate.

[0014] Preferably, the bottom of the water storage tank, away from the water supply pipe, is connected to an inlet pipe, a first check valve is installed at one end of the inlet pipe, and a second check valve is installed at one end of the water supply pipe.

[0015] Preferably, it also includes a drain pipe, which is disposed above the cooling cylinder. The bottom two ends of the drain pipe are respectively connected to four third clamps, which are movably engaged with the water outlet. The top of the drain pipe is fixedly connected to an air inlet pipe, and the two ends of the air inlet pipe are respectively connected to four fourth clamps, which are movably engaged with the top of the vent pipe.

[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, through the design of a first ratchet, a second ratchet, and a spiral spring, ensures that the stirring blades do not agitate the cooling water when it is discharged from the cooling cylinder, thus preventing excessive mixing between the high-temperature cooling water and the low-temperature cooling water that has just flowed into the cooling cylinder. The stirring blades will only agitate the cooling water when the high-temperature cooling water has been completely discharged, allowing the cooling water near the vent pipe to mix thoroughly with the cooling water far from the vent pipe, thereby ensuring the heat exchange effect.

[0017] This invention utilizes a drive shaft design that allows the connecting shaft to rotate along with the rotating shaft. When the connecting shaft rotates, it drives the second cylinder to rotate, which in turn drives the second path groove to rotate. This, in turn, causes the second sliding pin and bushing to move up and down, thereby driving the mounting rod and the U-shaped scraper to move up and down. During the up and down movement of the U-shaped scraper, the water film adhering to the surface of the fins is scraped off, allowing the flue gas flowing into the ventilation pipe to directly contact the fins, thus ensuring heat exchange efficiency.

[0018] The present invention uses a first ferrule, a second ferrule, a third ferrule, and a fourth ferrule to allow the individual heat exchange mechanism to be easily removed, which facilitates the transportation and installation of the equipment, as well as subsequent repair and maintenance. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the water storage tank in this invention; Figure 3 This is a schematic diagram of the heat exchange mechanism in this invention; Figure 4 This is a schematic diagram of the internal structure of the cooling cylinder in this invention; Figure 5 This is a schematic diagram of the connection structure between the first sliding pin and the first path groove in this invention; Figure 6 for Figure 5 A magnified view of the structure at point A in the middle; Figure 7 This is a schematic diagram of the internal structure of the vent pipe in this invention; Figure 8 This is a schematic diagram of the connection structure between the bushing and the second cylinder in this invention; Figure 9 This is a schematic cross-sectional view of the bushing structure in this invention; Figure 10 This is a schematic diagram of the connection structure between the drain pipe and the air inlet pipe in this invention.

[0020] In the diagram: 1. Water storage tank; 2. U-shaped tube; 3. Heat exchange mechanism; 301. Cooling cylinder; 302. Vent pipe; 303. Fins; 304. Inlet; 305. Outlet; 306. Shaft; 307. Turbine; 308. First cylinder; 309. First path groove; 310. Collar; 311. First sliding pin; 312. Stirring blade; 313. First ratchet; 314. First spring telescopic rod; 315. First pawl; 316. Scroll spring; 317. Second ratchet; 318. Second spring telescopic rod; 319. Second pawl; 320 321. Connecting shaft; 322. Second cylinder; 323. Second path groove; 324. Bushing; 325. Second sliding pin; 326. Mounting rod; 327. U-shaped scraper; 328. Drive shaft; 329. First bevel gear; 320. Second bevel gear; 4. Water supply pipe; 5. First clamping sleeve; 6. Water collection box; 7. Second clamping sleeve; 8. Drain pipe; 9. Air outlet; 10. Cylinder; 11. Pressure plate; 12. Water inlet pipe; 13. First check valve; 14. Second check valve; 15. Drain pipe; 16. Third clamping sleeve; 17. Air inlet pipe; 18. Fourth clamping sleeve. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Please see Figures 1-10This invention provides a technical solution: a modular flue-type extruded aluminum condensing heat exchanger, including a water storage tank 1, a U-shaped tube 2, and a heat exchange mechanism 3. The U-shaped tube 2 is fixedly connected to the top of the water storage tank 1, and one end of the U-shaped tube 2 is connected to a water supply pipe 4. One end of the water supply pipe 4 is connected to the bottom of the side wall of the water storage tank 1. Four first clamping sleeves 5 are respectively connected to both ends of the U-shaped tube 2. Eight heat exchange mechanisms 3 are provided, each including a cooling cylinder 301 and a vent pipe 302. The cooling cylinder 301 is fixed in the middle. A vent pipe 302 is fixedly connected to the cooling cylinder 301, with both ends extending to the outside of the cooling cylinder 301. Multiple fins 303 are fixedly connected to the inner wall of the vent pipe 302. A water inlet 304 is located at the bottom of the cooling cylinder 301 adjacent to the vent pipe 302, and the water inlet 304 is movably engaged with the first retaining sleeve 5. A water outlet 305 is located at the top of the cooling cylinder 301 adjacent to the vent pipe 302. A water collection box 6 is fixedly connected to the center of the top of the water storage tank 1, with four... The second clamping sleeve 7 is movably engaged with the bottom of the vent pipe 302. A drain pipe 8 is connected to one end of the bottom of the water collection box 6. The bottom of the water collection box 6 is positioned so that one end of the drain pipe 8 is lower than the other end. An air outlet 9 is provided on the side wall of the water collection box 6 above the drain pipe 8. Two cylinders 10 are fixedly connected to both ends of the top of the water storage tank 1. The output ends of the four cylinders 10 extend into the interior of the water storage tank 1 and are all fixedly connected to a pressure plate 11. An inlet pipe 12 is connected to the bottom of the end of the water storage tank 1 furthest from the water supply pipe 4. A first check valve 13 is installed at one end of the water pipe 12, and a second check valve 14 is installed at one end of the water supply pipe 4; it also includes a drain pipe 15, which is located above the cooling cylinder 301. Four third clamps 16 are connected to the bottom ends of the drain pipe 15, and the third clamps 16 are movably engaged with the water outlet 305. An air inlet pipe 17 is fixedly connected to the top of the drain pipe 15, and four fourth clamps 18 are connected to the two ends of the air inlet pipe 17, and the fourth clamps 18 are movably engaged with the top of the vent pipe 302.

[0023] Specifically, during use, the inlet 304 of the cooling cylinder 301 needs to be connected to the first clamping sleeve 5, the outlet 305 of the cooling cylinder 301 needs to be connected to the third clamping sleeve 16, the bottom of the vent pipe 302 needs to be connected to the second clamping sleeve 7, and the top of the vent pipe 302 needs to be connected to the fourth clamping sleeve 18. Then, the inlet pipe 12 of the water storage tank 1 needs to be connected to the container containing cooling water, and the pressure plate 11 needs to be moved upward by the four cylinders 10. At this time, a negative pressure will be generated inside the water storage tank 1. Under the action of the negative pressure, the cooling water will flow through the inlet pipe 10. Water flows into the water storage tank 1 through pipe 12, and then the pressure plate 11 is driven downward again by four cylinders 10. Under the squeezing action of the pressure plate 11, the cooling water in the water storage tank 1 flows into the cooling cylinder 301 through the water supply pipe 4, U-shaped pipe 2 and first clamping sleeve 5. It should be noted that the purpose of using four cylinders 10 to drive the pressure plate 11 downward to transport the cooling water instead of using a water pump is to better drive the turbine 307 to rotate. The precise and powerful linear mechanical power of the cylinders 10 is used to achieve an instantaneous impact on the cooling water, which is then transmitted through the pressure plate 11. Mechanical energy is directly and instantaneously transferred to the cooling water. At this time, the instantaneous flow rate of the cooling water is large and the impact force is strong. The pressure plate driven by cylinder 10 can act like a "hammer" to force a large amount of water into the cooling cylinder 301 at high speed in a short period of time, and then quickly discharge it from the outlet 305. This generates a sudden and strong impact on the turbine 307 located at the outlet 305, thereby effectively overcoming the static friction and the resistance of the scroll spring 316, allowing the turbine 307 to rotate smoothly. When the water pump drives the cooling water flow, the energy transfer of the water flow is relatively slow and the impact force is weak. This makes it difficult for the cooling water to drive the turbine 307 to rotate. At the same time, the cylinder 10 can precisely control the stroke and speed of the pressure plate 11, so as to accurately control the water volume and impact force each time, making the whole process more controllable and repeatable. However, the water volume and impact force of the water pump when delivering cooling water are difficult to control precisely. During use, the water pump may continue to deliver cooling water even after the scroll spring 316 has fully contracted, which may easily damage the scroll spring 316. Therefore, it is more appropriate to use the cylinder 10 to drive the pressure plate 11 to move downward to deliver cooling water. As cooling water flows into the cooling cylinder 301, high-temperature flue gas is simultaneously transported to the inlet pipe 17. The high-temperature flue gas then flows through the fourth sleeve 18 into the vent pipe 302. The heat in the flue gas within the vent pipe 302 is absorbed by the cooling water, thus achieving heat exchange. The design of the fins 303 increases the heat exchange area, thereby improving heat exchange efficiency. When the flue gas comes into contact with the fins 303, the moisture in the flue gas condenses into liquid. This liquid flows through the vent pipe 302 and the second sleeve 7 into the water collection box 6, and then through the drain pipe... 8 is discharged, and excess flue gas will be discharged through the exhaust port 9. After a period of heat exchange, the pressure plate 11 needs to be driven up and down again by four cylinders 10 to transport cooling water. At this time, the cooling water in the cooling cylinder 301 that has absorbed the temperature of the flue gas will flow into the drain pipe 15 through the third sleeve 16 and be discharged. The design of the first one-way valve 13 allows the cooling water in the inlet pipe 12 to flow only towards the water storage tank 1, and the design of the second one-way valve 14 allows the cooling water in the water supply pipe 4 to flow only towards the U-shaped pipe 2.

[0024] like Figures 4 to 6 As shown, a rotating shaft 306 is rotatably connected to one end of the cooling cylinder 301. The top of the rotating shaft 306 extends into the outlet 305 and is fixedly connected to a turbine 307. A first cylinder 308 is rotatably connected to the middle of the rotating shaft 306. A first path groove 309 is provided on the side wall of the first cylinder 308. A vent pipe 302 is located inside the cooling cylinder 301 and is slidably connected to one end of a collar 310. A first sliding pin 311 is fixedly connected to one end of the collar 310. The first sliding pin 311 is slidably connected to the first path groove 309. Stirring blades 312 are fixedly connected to both ends of the collar 310. A first ratchet 313 is fixedly connected to the top of the first cylinder 308. The inner wall of the cooling cylinder 301 is located at the first ratchet 313. One end of the first ratchet 313 is fixedly connected to a first spring telescopic rod 314, and one end of the first spring telescopic rod 314 is fixedly connected to a first pawl 315 that is adapted to the first ratchet 313; a spiral spring 316 is fixedly connected to the top of the first ratchet 313, one end of the spiral spring 316 is fixedly connected to the rotating shaft 306, and a second ratchet 317 is fixedly connected to the rotating shaft 306 above the spiral spring 316; a second spring telescopic rod 318 is fixedly connected to one end of the second ratchet 317 on the inner wall of the cooling cylinder 301, and a second pawl 319 that is adapted to the second ratchet 317 is fixedly connected to one end of the second spring telescopic rod 318; the ratchet teeth of the first ratchet 313 and the second ratchet 317 are in opposite directions.

[0025] Specifically, as cooling water flows from outlet 305 into the third sleeve 16, it drives the turbine 307 to rotate, thereby driving the shaft 306 to rotate. During this process, the second pawl 319 does not limit the second ratchet 317, so the shaft 306 and the second ratchet 317 can rotate smoothly. Meanwhile, the first pawl 315 will lock the first ratchet 313, thus restricting the rotation of the first ratchet 313 and the first cylinder 308. At this time, the spiral spring 316 gradually contracts under torsional force. When the pressure plate 11 stops moving downward or upward, the cooling water in the cooling cylinder 301 will stop flowing. At this time, the turbine 307, shaft 306, and first ratchet 313 will stop rotating, and the spiral spring 316 will rebound. Since the shaft 306 and the second ratchet 317 cannot rotate back to their original positions under the limiting action of the second pawl 319, the spiral spring 316 will only drive the second ratchet 306 when it rebounds. A ratchet 313 and a first cylinder 308 rotate. During this process, the first pawl 315 does not limit the rotation of the first ratchet 313. When the first cylinder 308 rotates, it drives the first path groove 309 to rotate, thereby driving the first sliding pin 311, collar 310 and stirring blade 312 to move up and down, thereby stirring the cooling water in the cooling cylinder 301, thus ensuring heat exchange efficiency. Through this design, the stirring blade 312 will not stir the cooling water when the original high-temperature cooling water in the cooling cylinder 301 is discharged, thus avoiding excessive mixing of the high-temperature cooling water with the low-temperature cooling water that has just flowed into the cooling cylinder 301. The stirring blade 312 will stir the cooling water only when the high-temperature cooling water is completely discharged, so that the cooling water near the vent pipe 302 in the cooling cylinder 301 can be fully mixed with the cooling water far away from the vent pipe 302, thereby ensuring the heat exchange effect.

[0026] like Figures 7 to 9 As shown, a connecting shaft 320 is rotatably connected inside the vent pipe 302. A second cylinder 321 is fixedly connected to the middle of the connecting shaft 320. A second path groove 322 is provided on the side wall of the second cylinder 321. A bushing 323 is fitted onto one end of the second cylinder 321. A second sliding pin 324 is fixedly connected to one end of the inner wall of the bushing 323. The second sliding pin 324 is slidably connected to the second path groove 322. Multiple mounting rods 325 are fixedly connected to one end of the outer wall of the bushing 323. Multiple mounting rods 325 are fixedly connected to one end of each mounting rod 325. A U-shaped scraper 326 is slidably connected to the fins 303; a drive shaft 327 is rotatably connected to one end of the bottom of the vent pipe 302; a first bevel gear 328 is fixedly connected to one end of the drive shaft 327 inside the cooling cylinder 301 and the bottom of the rotating shaft 306; the two first bevel gears 328 mesh with each other; a second bevel gear 329 is fixedly connected to one end of the drive shaft 327 inside the vent pipe 302 and the bottom of the connecting shaft 320; the two second bevel gears 329 mesh with each other.

[0027] Specifically, during the rotation of the rotating shaft 306, the first bevel gear 328 will rotate. Under the action of the transmission shaft 327 of the two first bevel gears 328, the transmission shaft 327 will rotate together with the rotating shaft 306. At this time, the connecting shaft 320 will rotate together with the transmission shaft 327 under the transmission action of the two second bevel gears 329. When the connecting shaft 320 rotates, it will drive the second cylinder 321 to rotate, thereby driving the second path groove 322 to rotate, which in turn drives the second sliding pin 324 and bushing 323 to move up and down, thereby driving the mounting rod 325 and U-shaped scraper 326 to move up and down. During the up and down movement of the U-shaped scraper 326, the water film attached to the surface of the fins 303 will be scraped off, so that the flue gas flowing into the ventilation pipe 302 can directly contact the fins 303, thereby ensuring heat exchange efficiency.

[0028] Working principle: During use, the inlet pipe 12 of the water storage tank 1 needs to be connected to the container containing cooling water. Four cylinders 10 drive the pressure plate 11 upwards, creating a negative pressure inside the water storage tank 1. Under this negative pressure, cooling water flows into the water storage tank 1 through the inlet pipe 12. Then, the four cylinders 10 drive the pressure plate 11 downwards again. Under the squeezing action of the pressure plate 11, the cooling water in the water storage tank 1 flows into the cooling cylinder 301 through the water delivery pipe 4, U-shaped pipe 2, and first clamping sleeve 5. At this time, high-temperature flue gas is transported to the air inlet pipe 17, allowing it to flow into the vent pipe 302 through the fourth clamping sleeve 18. The heat in the flue gas in the vent pipe 302 is absorbed by the cooling water, thus achieving heat exchange. The purpose of heat exchange is to increase the heat exchange area through the design of fins 303, thereby improving the heat exchange efficiency. When the flue gas comes into contact with fins 303, the moisture in the flue gas will condense into liquid. This liquid will flow into the water collection box 6 through the vent pipe 302 and the second sleeve 7, and be discharged through the drain pipe 8. Excess flue gas will be discharged through the air outlet 9. After a period of heat exchange, the pressure plate 11 needs to be moved up and down again by the four cylinders 10 to transport cooling water. At this time, the cooling water in the cooling cylinder 301 that has absorbed the temperature of the flue gas will flow into the drain pipe 15 through the third sleeve 16 and be discharged. The cooling water that has absorbed heat and is discharged from the drain pipe 15 can be collected and cooled in a container for subsequent use.

[0029] As cooling water flows from outlet 305 into the third sleeve 16, it drives the turbine 307 to rotate, thereby driving the shaft 306 to rotate. During this process, the second pawl 319 does not limit the second ratchet 317, so the shaft 306 and the second ratchet 317 can rotate smoothly. However, the first pawl 315 will lock the first ratchet 313, thus restricting the rotation of the first ratchet 313 and the first cylinder 308. At this time, the spiral spring 316 gradually contracts under torsional force. When the pressure plate 11 stops moving downward or upward, the cooling water in the cooling cylinder 301 will stop flowing. At this time, the turbine 307, shaft 306, and... The first ratchet 313 will stop rotating, and the spiral spring 316 will rebound. Since the shaft 306 and the second ratchet 317 cannot rotate back to their original positions due to the limiting action of the second pawl 319, the spiral spring 316 will only drive the first ratchet 313 and the first cylinder 308 to rotate when it rebounds. During this process, the first pawl 315 will not limit the rotation of the first ratchet 313. When the first cylinder 308 rotates, it will drive the first path groove 309 to rotate, thereby driving the first sliding pin 311, the collar 310 and the stirring blade 312 to move up and down, so as to stir the cooling water in the cooling cylinder 301, thereby ensuring the heat exchange efficiency.

[0030] During the rotation of the rotating shaft 306, the first bevel gear 328 will rotate. Under the action of the transmission shaft 327 of the two first bevel gears 328, the transmission shaft 327 will rotate together with the rotating shaft 306. At this time, the connecting shaft 320 will rotate together with the transmission shaft 327 under the transmission action of the two second bevel gears 329. When the connecting shaft 320 rotates, it will drive the second cylinder 321 to rotate, thereby driving the second path groove 322 to rotate, which in turn drives the second sliding pin 324 and bushing 323 to move up and down, thereby driving the mounting rod 325 and U-shaped scraper 326 to move up and down. During the up and down movement of the U-shaped scraper 326, the water film attached to the surface of the fin 303 will be scraped off, so that the flue gas flowing into the ventilation pipe 302 can directly contact the fin 303, thereby ensuring heat exchange efficiency.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications 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 modular flue-type extruded aluminum condensing heat exchanger, comprising a water storage tank (1), characterized in that, Also includes: U-shaped pipe (2) is fixedly connected to the top of water storage tank (1). One end of the U-shaped pipe (2) is connected to a water supply pipe (4). One end of the water supply pipe (4) is connected to the bottom of the side wall of the water storage tank (1). Four first clamps (5) are connected to both ends of the U-shaped pipe (2). The heat exchange mechanism (3) is provided in eight parts. The heat exchange mechanism (3) includes a cooling cylinder (301) and a vent pipe (302). The vent pipe (302) is fixedly connected to the middle of the cooling cylinder (301). Both ends of the vent pipe (302) extend to the outside of the cooling cylinder (301). Multiple fins (303) are fixedly connected to the inner wall of the vent pipe (302). A water inlet (304) is provided at the bottom of the cooling cylinder (301) adjacent to the vent pipe (302). The water inlet (304) is movably engaged with the first clamping sleeve (5). A water outlet (305) is provided at the top of the cooling cylinder (301) adjacent to the vent pipe (302).

2. The modular flue-type extruded aluminum condensing heat exchanger according to claim 1, characterized in that: The cooling cylinder (301) is rotatably connected to one end of a rotating shaft (306). The top of the rotating shaft (306) extends into the outlet (305) and is fixedly connected to a turbine (307). The middle of the rotating shaft (306) is rotatably connected to a first cylinder (308). The side wall of the first cylinder (308) is provided with a first path groove (309). The vent pipe (302) is located inside the cooling cylinder (301) and is slidably connected to one end of a collar (310). One end of the collar (310) is fixedly connected to a first sliding pin (311). The first sliding pin (311) is slidably connected to the first path groove (309). The two ends of the collar (310) are respectively fixedly connected to stirring blades (312).

3. A modular flue-type extruded aluminum condensing heat exchanger according to claim 2, characterized in that: The top of the first cylinder (308) is fixedly connected to a first ratchet (313), and the inner wall of the cooling cylinder (301) is fixedly connected to a first spring telescopic rod (314) at one end of the first ratchet (313). One end of the first spring telescopic rod (314) is fixedly connected to a first pawl (315) that is compatible with the first ratchet (313).

4. A modular flue-type extruded aluminum condensing heat exchanger according to claim 3, characterized in that: A spiral spring (316) is fixedly connected to the top of the first ratchet (313). One end of the spiral spring (316) is fixedly connected to the rotating shaft (306). A second ratchet (317) is fixedly connected above the spiral spring (316) on the rotating shaft (306). A second spring telescopic rod (318) is fixedly connected to one end of the second ratchet (317) on the inner wall of the cooling cylinder (301). A second pawl (319) that matches the second ratchet (317) is fixedly connected to one end of the second spring telescopic rod (318). The ratchet teeth of the first ratchet (313) and the second ratchet (317) are in opposite directions.

5. A modular flue-type extruded aluminum condensing heat exchanger according to claim 4, characterized in that: The vent pipe (302) is rotatably connected to a connecting shaft (320). A second cylinder (321) is fixedly connected to the middle of the connecting shaft (320). A second path groove (322) is provided on the side wall of the second cylinder (321). A bushing (323) is fitted on one end of the second cylinder (321). A second sliding pin (324) is fixedly connected to one end of the inner wall of the bushing (323). The second sliding pin (324) is slidably connected to the second path groove (322). A plurality of mounting rods (325) are fixedly connected to one end of the outer wall of the bushing (323). A plurality of U-shaped scrapers (326) are fixedly connected to one end of the mounting rods (325). The U-shaped scrapers (326) are slidably connected to the fins (303).

6. A modular flue-type extruded aluminum condensing heat exchanger according to claim 5, characterized in that: The bottom end of the vent pipe (302) is rotatably connected to a drive shaft (327). The drive shaft (327) is fixedly connected to a first bevel gear (328) at one end inside the cooling cylinder (301) and at the bottom of the rotating shaft (306). The two first bevel gears (328) mesh with each other. The drive shaft (327) is fixedly connected to a second bevel gear (329) at one end inside the vent pipe (302) and at the bottom of the connecting shaft (320). The two second bevel gears (329) mesh with each other.

7. A modular flue-type extruded aluminum condensing heat exchanger according to claim 6, characterized in that: The water storage tank (1) is fixedly connected to the center of the top of the water collection box (6). The two ends of the water collection box (6) are respectively connected to four second sleeves (7). The second sleeves (7) are movably connected to the bottom of the vent pipe (302). The bottom of the water collection box (6) is connected to a drain pipe (8). The bottom of the water collection box (6) is located at one end of the drain pipe (8) and lower than the other end. The side wall of the water collection box (6) is provided with an air outlet (9) above the drain pipe (8).

8. A modular flue-type extruded aluminum condensing heat exchanger according to claim 7, characterized in that: Two cylinders (10) are fixedly connected to the top two ends of the water storage tank (1), and the output ends of the four cylinders (10) extend into the water storage tank (1) and are fixedly connected to a pressure plate (11).

9. A modular flue-type extruded aluminum condensing heat exchanger according to claim 8, characterized in that: The bottom of the water storage tank (1) away from the water supply pipe (4) is connected to the water inlet pipe (12). A first check valve (13) is installed at one end of the water inlet pipe (12), and a second check valve (14) is installed at one end of the water supply pipe (4).

10. A modular flue-type extruded aluminum condensing heat exchanger according to claim 9, characterized in that: It also includes a drain pipe (15), which is located above the cooling cylinder (301). The bottom ends of the drain pipe (15) are connected to four third sleeves (16), which are movably engaged with the water outlet (305). The top of the drain pipe (15) is fixedly connected to an air inlet pipe (17), which is connected to four fourth sleeves (18) at both ends. The fourth sleeves (18) are movably engaged with the top of the vent pipe (302).

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