A heat exchanger for heating

Abstract

The utility model discloses a heat supply heat exchanger belongs to heat supply heat exchange equipment technical field, a heat supply heat exchanger includes exchange jar and pipeline mechanism, and the pipeline mechanism is equipped with the elbow pipe, the direct current pipe and the connecting shell that contains the connecting shaft, the spoiler, the guide vane inside, and the water flow forms turbulent flow through the spoiler and guide vane rotation, improves the heat exchange efficiency, and the equipment still is equipped with the backflush mechanism, including flowmeter, clean water box, booster water pump, drain pipe and apron, and flowmeter monitors water flow, when the flow attenuation, and booster water pump will dilute after the acidic cleaning agent high -speed reverse flushes the water scale of elbow pipe and direct current pipe, and discharges through drain pipe. The utility model solves the problem that the heat exchange efficiency of existing heat exchanger is insufficient and the water scale is inconvenient to clean, improves the heat exchange efficiency and the reliability of equipment operation, realizes the automatic descaling and the maintenance convenience.

Description

Technical Field

[0001] This utility model relates to the field of heating and heat exchange equipment technology, and in particular to a heating and heat exchanger. Background Technology

[0002] In modern industrial and civil heating systems, heat exchangers, as equipment, directly affect energy efficiency and the economy of the heating system. A traditional heating heat exchanger typically exchanges heat with the fluid to be heated outside the pipe by the flow of a hot fluid inside the pipe. However, within the limited size and space of the equipment, how to maximize the heat exchange efficiency between the hot fluid and the fluid to be heated has always been a major challenge for the industry. Simple straight pipe designs have limited heat exchange effects, while increasing the pipe length or using complex structures to enhance heat exchange often increases the size of the equipment and manufacturing costs, making it difficult to balance efficiency and space in compact applications.

[0003] Furthermore, since the heating fluid often contains hardness substances such as calcium and magnesium ions, scale easily forms inside the pipes under long-term high-temperature operation. The formation of scale not only significantly reduces the thermal conductivity of the pipes, leading to obstructed heat transfer and a sharp drop in heat exchange efficiency, but also reduces the inner diameter of the pipes, increases fluid resistance, increases pump energy consumption, and may even cause pipe blockage. In the current technology, scale removal usually relies on manual periodic disassembly and cleaning or chemical soaking. These methods are not only cumbersome and time-consuming, but may also cause a certain degree of corrosion to the equipment, reducing the reliability and service life of the equipment. For large or highly integrated heat exchange equipment, manual cleaning is even more difficult, or even impossible.

[0004] Therefore, this utility model proposes a heating heat exchanger to solve the shortcomings of insufficient heat exchange efficiency and inconvenient scale cleaning in the prior art. Utility Model Content

[0005] In view of the problems of insufficient heat exchange efficiency in a limited space, and the internal pipes being susceptible to scale, resulting in reduced heat exchange efficiency, inconvenient cleaning, and poor cleaning effect in the existing heating heat exchanger, this utility model aims to provide a heating heat exchanger with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a heat exchanger, including: an exchange tank with an internal piping system; and a backflushing mechanism.

[0007] The pipeline system includes an inlet tank, an inlet, a bend, a straight pipe, a connecting shell, a collection tank, and an outlet. The inlet is fixedly connected to the side of the inlet tank for connecting to an external heat source pipeline. The inlet tank is connected to the bend, the bend is connected to the straight pipe, the end of the straight pipe is fixedly connected to the connecting shell, the outlet of the connecting shell is fixedly connected to the collection tank, and the lower part of the collection tank is provided with an outlet for discharging water. The exchange tank is also provided with a cold water inlet and a cold water outlet.

[0008] The connecting shell is equipped with a connecting shaft, a baffle plate, and a guide channel. The two ends of the connecting shaft are fixed to the inner wall of the connecting shell. The center holes of the baffle plate and the guide channel are fitted onto the connecting shaft. The baffle plate and the guide channel are rotatably installed inside the connecting shell through the connecting shaft. The baffle plate rotates under the action of water flow and drives the guide channel to rotate synchronously.

[0009] The backflushing mechanism includes a cleaning chamber, a flow meter, a cleaning water box, a booster pump, a drain pipe, and a cover plate. The cleaning chamber contains the cleaning water box and the booster pump. The flow meter is installed on the water flow path of the pipeline mechanism to monitor the water flow. The cleaning water box is connected to the inlet of the booster pump through a pipe, and the outlet of the booster pump is connected to the collection tank through a pipe. The bottom of the collection tank is equipped with a drain pipe, and the drain pipe is equipped with a cover plate.

[0010] Preferably, the bend design is a multi-segment bend serpentine tube structure, which gives it a longer heat exchange path within the limited space of the heat exchange tank.

[0011] Preferably, the spoiler has blades arranged in a spiral pattern, and the guide channel has a spiral groove that cooperates with the spoiler blades. The rotation of the spoiler and the guide channel is driven by the impact force of the water flow.

[0012] Preferably, both ends of the connecting shaft are fixed to the inner wall of the connecting shell, and the center holes of the baffle and the guide groove are fitted onto the connecting shaft.

[0013] Preferably, the flow meter is electrically connected to the control unit of the booster pump, and when the flow meter detects that the water flow rate has decreased to a preset value, it automatically triggers the booster pump to start.

[0014] Preferably, after the booster pump starts, it pumps the acidic cleaning agent inside the cleaning water box to the collection tank. The acidic cleaning agent is mixed and diluted with the residual water in the collection tank, and then pressurized by the booster pump and backwashed into the inside of the straight pipe and the bend pipe.

[0015] Preferably, the cover is a threaded sealing cover, which is unscrewed after cleaning to discharge the waste liquid containing scale and cleaning solution through the drain pipe.

[0016] Preferably, the cleaning chamber is an independent, enclosed structure with an inspection door to protect the cleaning water box and booster pump from external environmental influences.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem of insufficient heat exchange efficiency of heat exchangers in a limited space in the prior art by setting a baffle and a guide channel inside the connecting shell and making it rotate under the drive of water flow to generate turbulence, and by extending the heat exchange path through the bending design of the bent pipe, thus achieving the technical effect of significantly improving heat exchange efficiency.

[0018] 2. This utility model, by setting a flow meter to monitor the water flow, automatically starts a booster pump when the flow decreases, which flushes the internal pipes with diluted acidic cleaning agent at high speed. This solves the problem in the prior art that scale easily forms in the internal pipes of heat exchangers, leading to reduced heat exchange efficiency and inconvenient cleaning. It achieves the technical effect of intelligent and automated descaling of pipes, ensuring the long-term efficient operation of the equipment.

[0019] 3. This utility model solves the problems of inconvenient maintenance of descaling components and difficulty in waste liquid treatment in the prior art by setting the booster water pump and cleaning water box inside the cleaning chamber and designing a drain pipe with a detachable cover. It achieves the technical effect of improving the convenience of equipment maintenance and ensuring the safety and reliability of the cleaning process. Attached Figure Description

[0020] Figure 1 This is a perspective view of a heat exchanger for heating proposed in this utility model; Figure 2 This is a front view of a heat exchanger for heating according to the present invention. Figure 3 This is a schematic diagram of the piping structure of a heat exchanger proposed in this utility model; Figure 4 This is a schematic diagram of the structure of a heat exchanger proposed in this utility model.

[0021] Legend: 1. Exchange tank; 2. Piping system; 201. Inlet tank; 202. Bend; 203. Straight pipe; 204. Connecting shaft; 205. Baffle plate; 206. Flow guide channel; 207. Connecting shell; 208. Collection box; 209. Inlet; 210. Outlet; 3. Backflushing mechanism; 301. Cleaning chamber; 302. Booster pump; 303. Cleaning water box; 304. Flow meter; 305. Drain pipe; 306. Cover plate; 4. Cold water inlet; 5. Cold water outlet. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0023] Reference Figures 1 to 4This utility model provides a heating heat exchanger, which aims to solve the problems of low heat exchange efficiency in a limited space and incomplete cleaning of scale in the internal pipes, which limit the long-term performance of an existing heating heat exchanger.

[0024] like Figure 1 and Figure 2 As shown, a heat exchanger includes an exchange tank 1 and a piping system 2 internally disposed in the exchange tank 1. The exchange tank 1 serves as the main container for carrying cold water to be heated. The cold water flows in through the cold water inlet 4 on the exchange tank 1 and is discharged from the cold water outlet 5 after being heated. The piping system 2 is used to carry the hot fluid and realize heat transfer and exchange inside the exchange tank 1.

[0025] like Figure 3 and Figure 4 As shown, the pipeline mechanism 2 consists of multiple interconnected components, including a water inlet tank 201, a water inlet 209, a bend 202, a straight pipe 203, a connecting shell 207, a collection box 208, and a water outlet 210. Specifically, the water inlet 209 is fixedly connected to the side of the water inlet tank 201 and is used to connect to an external heat source pipeline. One end of the water inlet tank 201 is connected to the bend 202, and the other end of the bend 202 is connected to the straight pipe 203. The end of the straight pipe 203 is fixedly connected to the connecting shell 207. The outlet of the connecting shell 207 is fixedly connected to the collection box 208. The lower part of the collection box 208 is provided with a water outlet 210 for discharging the hot water that has completed heat exchange.

[0026] A heat exchanger also includes a backflushing mechanism 3, which is partially located inside a cleaning chamber 301. The cleaning chamber 301 is typically fixed to the outside or side of the exchange tank 1. The backflushing mechanism 3 includes a cleaning chamber 301, a flow meter 304, a cleaning water box 303, a booster pump 302, a drain pipe 305, and a cover plate 306. The cleaning water box 303 and the booster pump 302 are both housed inside the cleaning chamber 301. The flow meter 304 is connected in series to the inlet or outlet pipe of the pipeline mechanism 2 to monitor the water flow rate inside the pipeline mechanism 2 in real time. The cleaning water box 303 is connected to the inlet 209 of the booster pump 302 via a delivery pipe. The outlet 210 of the booster pump 302 is connected to the bottom of a collection tank 208 via a delivery pipe. The bottom of the other side of the collection tank 208 is connected to the drain pipe 305, and the end of the drain pipe 305 is provided with a cover plate 306.

[0027] To solve the above-mentioned technical problems, the technical solution of this embodiment is that a heat exchanger for heating also includes a connecting shaft 204, a baffle 205 and a guide channel 206 inside the connecting shell 207 in the pipeline mechanism 2, and an intelligent control and cleaning component in the backflushing mechanism 3. These components form a specific structural fit and connection relationship with the aforementioned pipeline mechanism 2 and exchange tank 1.

[0028] Please refer to the following carefully. Figure 3 and Figure 4 The structure will be described in detail below: The end of the DC pipe 203 is fixedly connected to the connecting shell 207. A connecting shaft 204 is provided inside the connecting shell 207, with both ends of the connecting shaft 204 fixed to the inner wall of the connecting shell 207. The baffle 205 has spirally distributed blades, and the guide channel 206 has a spiral groove that mates with the blades of the baffle 205. The central holes of the baffle 205 and the guide channel 206 are fitted onto the connecting shaft 204, allowing the baffle 205 and the guide channel 206 to rotate freely on the connecting shaft 204. When water flows through the connecting shell 207… The impact on the blade structure of the spoiler 205 generates thrust, causing the spoiler 205 to start rotating. At the same time, the rotation of the spoiler 205 drives the guide channel 206 to rotate synchronously. This rotating turbulence structure driven by the kinetic energy of the water flow itself ensures that the water forms strong turbulence inside the connecting shell 207, effectively breaking the boundary layer and greatly improving the heat dissipation efficiency. The fixing effect of the connecting shaft 204 ensures that the spoiler 205 and the guide channel 206 will not be displaced when rotating at high speed, maintaining the stability of the structure and the reliability of operation.

[0029] Meanwhile, the bend 202 in the pipeline structure 2 is designed as a multi-segment serpentine pipe structure. This structure significantly increases the flow path of the hot fluid within the limited space of the exchange tank 1, thereby increasing the contact area and heat exchange time between the hot water and the cold water inside the exchange tank 1, and achieving sufficient heat transfer in the initial stage when the hot water temperature is high and the temperature difference is large.

[0030] The flow meter 304 in the backflushing mechanism 3 is connected in series on the inlet pipe of the pipeline mechanism 2 and is electrically connected to the control unit of the booster pump 302. The flow meter 304 is used to monitor the flow rate of the water in the pipeline in real time. The cleaning water box 303 is used to store acidic cleaning agent. The inlet 209 of the booster pump 302 is connected to the cleaning water box 303 through a pipe, and the outlet 210 is connected to the bottom of the collection box 208 through a pipe. The bottom of the collection box 208 is also connected to the drain pipe 305. The drain pipe 305 is equipped with a cover plate 306. The cleaning chamber 301 is an independent closed structure with an inspection door. It houses the cleaning water box 303 and the booster pump 302 and is used to protect these key components from the influence of the external environment. The synergistic effect of these components constitutes an intelligent automatic descaling system, which ensures the long-term, efficient and stable operation of a heat exchanger.

[0031] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, the bend 202 is designed as a multi-segment serpentine tube structure. This structure not only effectively increases the path length of hot water flow within the limited space of the heat exchange tank 1, but also allows the hot water to have a longer and more thorough heat exchange contact with the cold water inside the heat exchange tank 1, significantly improving the heat exchange efficiency.

[0032] As another preferred embodiment, the spoiler 205 has blades arranged in a spiral pattern, and the guide channel 206 has a spiral groove that cooperates with the blades of the spoiler 205. This spiral structure design of the spoiler 205 and the guide channel 206 can more effectively capture the energy of the water flow, causing it to rotate under the impact force of the water flow and generate stronger eddies and turbulence, thereby further accelerating the mixing and heat transfer of the water and improving the heat transfer coefficient.

[0033] In another preferred embodiment, the two ends of the connecting shaft 204 are fixed to the inner wall of the connecting shell 207 by welding or bolting. The central holes of the spoiler 205 and the guide channel 206 form a rotational fit with the connecting shaft 204. This fixing method enables the connecting shaft 204 to stably support the spoiler 205 and the guide channel 206, ensuring that they will not undergo radial or axial displacement due to force when rotating at high speed, thus ensuring the long-term stable operation of the spoiler mechanism.

[0034] In another preferred embodiment, the flow meter 304 is electrically connected to the microprocessor control unit of the booster pump 302 via a signal line. When the flow meter 304 detects in real time that the flow rate of the water in the pipeline has decreased to a preset threshold, the control unit automatically receives the signal and starts the booster pump 302, thereby realizing the automation and intelligence of the scale cleaning process without manual intervention.

[0035] As a further preferred embodiment, after the booster pump 302 starts, it first pumps a metered amount of the high-concentration acidic cleaning agent inside the cleaning water box 303 to the collection tank 208. In the collection tank 208, the cleaning agent is fully mixed and diluted with the residual water inside to form a cleaning solution of suitable concentration. Then, the booster pump 302 applies high pressure to the diluted cleaning solution, causing it to backflush the inside of the straight pipe 203 and the bend pipe 202 at high speed. This design of dilution followed by high-pressure backflush not only ensures the cleaning effect but also effectively controls the concentration of the cleaning agent and reduces corrosion of the pipes.

[0036] As another preferred embodiment, the cover plate 306 is designed with a threaded connection structure with a sealing gasket. This structure ensures sealing during normal operation to prevent liquid leakage. At the same time, when drainage is required, it can be easily and quickly disassembled by twisting, and the waste liquid after cleaning and the scale that has been peeled off can be completely discharged outside the equipment through the drain pipe 305.

[0037] As another preferred embodiment, the cleaning chamber 301 is an independent enclosed box structure with a lockable maintenance door. Its material is preferably corrosion-resistant metal or engineering plastic. The cleaning chamber 301 can not only effectively protect the internal cleaning water box 303 and booster water pump 302 from the influence of external environmental factors such as dust and moisture, thus extending their service life, but also facilitate the daily maintenance and repair of the equipment.

[0038] During equipment operation, the inlet 209 is connected to an external heat source pipeline, allowing hot water to flow into the inlet tank 201. Then, the hot water flows into the pipeline through the bend 202, which connects to the inlet tank 201. Initially, the water temperature is high. The bend in the bend 202 allows for a longer pipeline path within a smaller space, enabling sufficient heat exchange between the hot water and the water source inside the heat exchange tank 1. When the hot water flows into the direct current pipe 203, its temperature decreases due to heat exchange in the bend 202, and the connection shell 207 reduces the temperature. The water flow forms turbulence, and the thrust generated by the water flow causes the baffle 205 to rotate, which in turn drives the connecting shell 207 and the guide channel 206 to rotate. The connecting shaft 204 prevents displacement during rotation. The rotation of the baffle 205 and the guide channel 206 causes the turbulence speed of the water to increase, which fully dissipates heat. Finally, the water flow flows into the collection tank 208 and is discharged from the outlet 210. The pipeline mechanism 2 allows the cold water flowing in from the cold water inlet 4 to undergo sufficient heat exchange and is finally discharged from the cold water outlet 5.

[0039] After long-term operation of the equipment, scale easily forms inside the bend 202 and the straight pipe 203, which slows down the water flow and thickens the pipes, resulting in insufficient heat exchange. At this time, the flow meter 304 monitors the water flow. When the flow decreases, the cleaning water box 303 sends a signal to start the booster pump 302. The booster pump 302 sends the acidic cleaning agent inside the cleaning water box 303 into the collection tank 208. The residual water in the collection tank 208 dilutes the acidic cleaning agent. Then, the booster pump 302 pressurizes the water, causing the cleaning liquid to rush into the straight pipe 203 and the bend 202 at high speed to flush away the scale. Finally, the scale is carried into the inlet tank 201. The cover plate 306 is unscrewed to discharge the cleaning liquid into the equipment through the drain pipe 305, completing the cleaning of the equipment. The cleaning chamber 301 protects the cleaning water box 303 and the booster pump 302. The backwash mechanism 3 backwashes the equipment, making the cleaning effect better.

Claims

1. A heat exchanger for heating, comprising: The exchange tank (1) has an internal piping system (2). The piping system (2) includes an inlet tank (201), an inlet (209), a bend (202), a straight pipe (203), a connecting shell (207), a collection tank (208), and an outlet (210). The inlet (209) is connected to the inlet tank (201) for connecting to an external heat source pipeline. The inlet tank (201) is connected to the bend (202). The bend (202) is connected to the straight pipe (203). The straight pipe (203) is connected to the connecting shell (207). The connecting shell (207) is connected to the collection tank (208). The outlet (210) is located in the collection tank (208) for discharging water. The exchange tank (1) is also provided with a cold water inlet (4) and a cold water outlet (5). The characteristic feature is that the connecting shell (207) is provided with a connecting shaft (204), a baffle plate (205) and a guide channel (206) inside. The baffle plate (205) and the guide channel (206) are rotatably disposed inside the connecting shell (207) through the connecting shaft (204). The baffle plate (205) rotates under the action of water flow and drives the guide channel (206) to rotate synchronously. The heat exchanger also includes a backflushing mechanism (3), which includes a cleaning chamber (301), a flow meter (304), a cleaning water box (303), a booster pump (302), a drain pipe (305), and a cover plate (306). The cleaning chamber (301) is equipped with a cleaning water box (303) and a booster pump (302). The flow meter (304) is installed on the water flow path of the pipeline mechanism (2) to monitor the water flow. The cleaning water box (303) is connected to the inlet (209) of the booster pump (302) through a pipe. The outlet (210) of the booster pump (302) is connected to the collection box (208) through a pipe. The bottom of the collection box (208) is equipped with a drain pipe (305), and the drain pipe (305) is equipped with a cover plate (306).

2. A heat exchanger according to claim 1, characterized in that, The bend (202) is designed as a multi-segment bend serpentine tube structure, which gives it a longer heat exchange path within the limited space of the heat exchange tank (1).

3. A heat exchanger according to claim 1, characterized in that, The baffle (205) has blades arranged in a spiral shape, and the guide channel (206) has a spiral groove that cooperates with the blades of the baffle (205). The rotation of the baffle (205) and the guide channel (206) is driven by the impact force of the water flow.

4. A heat exchanger according to claim 1, characterized in that, The two ends of the connecting shaft (204) are fixed on the inner wall of the connecting shell (207), and the central holes of the baffle (205) and the guide groove (206) are sleeved on the connecting shaft (204).

5. A heat exchanger according to claim 1, characterized in that, The flow meter (304) is electrically connected to the control unit of the booster pump (302). When the flow meter (304) detects that the water flow rate has decreased to a preset value, it automatically triggers the booster pump (302) to start.

6. A heat exchanger according to claim 5, characterized in that, After the booster pump (302) is started, it pumps the acidic cleaning agent inside the cleaning water box (303) to the collection tank (208). The acidic cleaning agent is mixed and diluted with the residual water in the collection tank (208), and then pressurized by the booster pump (302) and backwashed inside the direct pipe (203) and the bend pipe (202).

7. A heat exchanger according to claim 1, characterized in that, The cover plate (306) is a threaded sealing cover plate (306) used to unscrew after cleaning and discharge the waste liquid containing scale and cleaning fluid through the drain pipe (305).

8. A heat exchanger according to claim 1, characterized in that, The cleaning chamber (301) is an independent, enclosed structure with an inspection door, used to protect the cleaning water box (303) and the booster pump (302) from the influence of the external environment.

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