Heat exchange device and heat exchange method for fluid heat exchange

Abstract

This invention relates to a heat exchange device and method for fluid heat exchange. The heat exchange device includes a hollow first housing, with a hollow second housing fitted inside the first housing, forming a cavity between the two housings. An array of heat exchange components is fitted inside the second housing. Each heat exchange component includes a hollow heat exchange tube with several openings on its sidewall. A heat exchange core assembly is fitted into each opening, with one end extending into the corresponding heat exchange tube and the other end extending into the cavity. Each heat exchange core assembly is electrically connected to the output of a power adapter. By using heat exchange core assemblies, the heat exchange core assemblies directly contact the fluid to be heated for heat exchange, thereby greatly improving heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and in particular to a heat exchange device and method for fluid heat exchange. Background Technology

[0002] In the field of industrial control, the normal operation of a fluid system often requires a high-power heat exchanger. Taking an industrial diesel engine as an example, the cooling water system of the diesel engine has an internal circulation structure. After the cooling water enters the diesel engine, it carries away the heat generated by the diesel engine operation. The high-temperature water flows from the diesel engine outlet to the air-cooled radiator. The air-cooled radiator dissipates heat by exchanging heat with the outside air through the heat dissipation fins. The fan at the top of the air-cooled radiator rotates, driving airflow to increase heat exchange, so that the cooling water in the radiator reaches a certain temperature, and then flows back to the diesel engine, repeating the cycle.

[0003] The heat dissipation principle of existing air-cooled radiators is air convection heat transfer, which has low heat transfer efficiency, requires the use of large-area heat exchange fins, and is equipped with high-power fans to enhance heat dissipation. It is noisy, bulky, and occupies a large production space. Furthermore, the radiator can only cool the fluid. When the actuator needs to be in a hot standby state, it is also necessary to be equipped with an additional preheater and temperature control valve to maintain the temperature of the fluid inside. It has low working efficiency and single function. Summary of the Invention

[0004] To address the shortcomings of existing production technologies, the applicant provides a heat exchange device and method for fluid heat exchange. By setting up a heat exchange core assembly, the heat exchange core assembly directly contacts the fluid to be heated for heat exchange, thereby greatly improving heat exchange efficiency. At the same time, the heat exchange core assembly has the functions of cooling and heating the fluid, enabling a heat exchange device to have dual working modes of cooling and heating. The structure is compact, effectively reducing the volume of the heat exchange device and lowering manufacturing and production costs.

[0005] The technical solution adopted in this invention is as follows:

[0006] A heat exchange device for fluid heat exchange includes a first hollow cover, a second hollow cover fitted inside the first cover, and a cavity formed between the second cover and the first cover. A motor is fixed on the first cover, and the output end of the motor passes through the wall of the first cover and is connected to a fan located in the cavity. The motor drives the fan to rotate, thereby causing air to flow in the cavity.

[0007] The second cover is equipped with an array of heat exchange components. Each heat exchange component includes a hollow heat exchange tube. Several openings are provided on the side wall of a single heat exchange tube. A heat exchange core assembly is installed in each opening. One end of the heat exchange core assembly extends into the corresponding heat exchange tube, while the other end extends into the cavity. The heat exchange core assembly is electrically connected to the output terminal of the power adapter. An inlet pipe for allowing fluid to flow into the heat exchange tube is installed at the bottom of the single heat exchange tube, and an outlet pipe for allowing fluid to flow out of the heat exchange tube is installed at the top of the single heat exchange tube.

[0008] When the power adapter outputs the first driving voltage, the temperature of the end of the corresponding heat exchange core group located inside the heat exchange tube decreases, while the temperature of the end located inside the cavity increases; when the power adapter outputs the second driving voltage, the temperature of the end of the corresponding heat exchange core group located inside the heat exchange tube increases, while the temperature of the end located inside the cavity decreases; the first driving voltage and the second driving voltage are in opposite directions.

[0009] As a further improvement to the above technical solution:

[0010] The first cover has several heat dissipation vents on its wall, and each heat dissipation vent can be detachably fitted with a screen.

[0011] The second cover is made of heat-insulating material, and the wall surface of the second cover is provided with mounting holes that correspond one-to-one with the openings. The mounting holes are used to allow the corresponding heat exchange core assembly to extend into the cavity.

[0012] The structure of a single heat exchange core assembly is as follows: it includes an insulation cover with a through hole in the middle, in which a semiconductor cooling chip is installed. A first fin and a second fin are respectively installed on the two side walls of the insulation cover. The first fin is attached to one working end face of the semiconductor cooling chip through the through hole, and the second fin is attached to the other working end face of the semiconductor cooling chip through the through hole.

[0013] The structure of the heat exchange tube is as follows: it includes a hollow first tube body, and several baffles are installed inside the first tube body at uniform intervals along the height direction of the first tube body. A through groove is opened on the end face of a single baffle for the fluid inside the first tube body to pass through. The through grooves on two adjacent baffles are arranged alternately, so that the fluid inside the first tube body flows in a serpentine manner.

[0014] The bottom wall of the first tube has several first interfaces, and the top wall of the first tube has several second interfaces.

[0015] The structure of the inlet pipe is as follows: it includes a hollow second pipe body, a fluid inlet is provided on the side wall of the second pipe body, and a third interface is provided on the top wall of the second pipe body, which is connected to the first interface.

[0016] The outlet pipe has the following structure: it includes a hollow third pipe body, a fluid outlet is provided on the side wall of the third pipe body, and a fourth interface is provided on the top wall of the third pipe body, which is connected to the second interface.

[0017] The bottom of the first cover is fitted with a support, and the bottom of the support is fitted with several evenly arranged legs.

[0018] The heat exchanger is externally equipped with a control system, which includes a microprocessor electrically connected to the power adapter and a temperature sensor mounted on the outlet pipe. The temperature sensor transmits the temperature signal of the outlet pipe to the microprocessor, and the microprocessor controls the output signal of the power adapter according to the signal sent by the temperature sensor.

[0019] A heat exchange method utilizing the aforementioned heat exchange equipment for fluid heat exchange includes the following steps:

[0020] The fluid to be processed flows into the interior of the heat exchange tube through the inlet pipe. The fluid inside the heat exchange tube flows from bottom to top and flows out to the outside of the heat exchange tube through the outlet pipe.

[0021] During the upward flow of fluid inside the heat exchange tube, when it is necessary to cool the fluid inside the heat exchange tube, the power adapter outputs a first driving voltage. The first driving voltage causes the temperature of one end of the heat exchange core assembly inside the heat exchange tube to decrease, thereby reducing the temperature of the fluid inside the heat exchange tube.

[0022] At the same time, the temperature of one end of the heat exchange core assembly located in the cavity rises. At this time, the motor drives the fan to rotate, causing the air in the cavity to flow, thereby accelerating heat dissipation.

[0023] During the upward flow of fluid inside the heat exchange tube, when it is necessary to heat the fluid inside the heat exchange tube, the power adapter outputs a second driving voltage. The second driving voltage causes the temperature of one end of the heat exchange core assembly inside the heat exchange tube to rise, thereby increasing the temperature of the fluid inside the heat exchange tube.

[0024] At the same time, the temperature at one end of the heat exchange core assembly located in the cavity decreases, at which point the motor stops.

[0025] The beneficial effects of this invention are as follows:

[0026] This invention features a compact and reasonable structure, and is easy to operate. By incorporating heat exchange equipment, when heat exchange is required for the fluid inside the heat exchange tube, the output temperature of the heat exchange core group 3 can be changed by altering the output voltage of the power adapter, thereby ensuring that the temperature inside the heat exchange tube meets the requirements. This results in high working efficiency, as the fluid directly contacts the heat exchange core group for heat exchange, leading to high heat exchange efficiency. Simultaneously, the inclusion of a motor and fan accelerates heat dissipation, further improving the working efficiency of the heat exchange equipment.

[0027] In this invention, a control system is set up, and a temperature sensor is installed at the outlet pipe. The temperature sensor communicates with a microprocessor and transmits the real-time collected temperature to the microprocessor. The microprocessor controls the drive voltage value output by the power adapter based on the real-time temperature, which can conveniently and effectively monitor the temperature of the fluid after heat exchange. At the same time, by changing the drive voltage output by the power adapter, the output temperature of the heat exchange core group can be changed, which can effectively improve the working efficiency of the heat exchange equipment.

[0028] The heat exchange method of the present invention is simple to operate. By changing the direction of the driving voltage, the switching between cooling and heating of the fluid can be completed conveniently and quickly. In addition, the heat dissipation is enhanced by a fan during the cooling process of the fluid, and the fan does not work during the heating process of the fluid. It has high working efficiency, can save production resources, and improve energy utilization. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the structure of the cover in this invention.

[0031] Figure 3 This is a schematic diagram of the heat exchange core assembly in this invention.

[0032] Figure 4 for Figure 3 Exploded view.

[0033] Figure 5 This is a schematic diagram of the installation structure of the heat exchange tube, inlet tube, and outlet tube in this invention.

[0034] Figure 6 This is a schematic diagram of the control system in this invention.

[0035] The components include: 1. First cover; 2. Second cover; 3. Heat exchange core assembly; 4. Motor; 5. Fan; 6. Heat exchange tube; 7. Inlet tube; 8. Outlet tube; 9. Temperature sensor; 10. Power adapter; 11. Microprocessor; 12. Heat dissipation vent; 13. Support; 14. Support leg;

[0036] 301. Semiconductor cooling chip; 302. Heat insulation cover; 303. First fin; 304. Second fin;

[0037] 601. First pipe body; 602. Partition plate; 603. Through groove; 604. First interface; 605. Second interface;

[0038] 701. Second pipe body; 702. Fluid inlet; 703. Third interface;

[0039] 801, Third tube body; 802, Fluid outlet; 803, Fourth interface. Detailed Implementation

[0040] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0041] Example 1:

[0042] like Figures 1-6 As shown, the heat exchange device for fluid heat exchange in this embodiment includes a hollow first cover 1. A hollow second cover 2 is installed inside the first cover 1, forming a cavity between the second cover 2 and the first cover 1. A motor 4 is fixed on the first cover 1, and the output end of the motor 4 passes through the wall of the first cover 1 and is connected to a fan 5 located in the cavity. The motor 4 drives the fan 5 to rotate, thereby causing air to flow in the cavity. An array of heat exchange components is installed inside the second cover 2. Each heat exchange component includes a hollow heat exchange tube 6. Several openings are provided on the side wall of a single heat exchange tube 6, and a heat exchange core assembly 3 is installed in each opening. One end of a single heat exchange core assembly 3 extends into the corresponding heat exchange tube 6. Meanwhile, the other end extends into the cavity. A single heat exchange core assembly 3 is electrically connected to the output terminal of the power adapter 10. An inlet pipe 7 for allowing fluid to flow into the heat exchange tube 6 is fitted at the bottom of the single heat exchange tube 6, and an outlet pipe 8 for allowing fluid to flow out of the heat exchange tube 6 is fitted at the top of the single heat exchange tube 6. When the power adapter 10 outputs the first driving voltage, the temperature of the end of the corresponding heat exchange core assembly 3 located inside the heat exchange tube 6 decreases, while the temperature of the end located inside the cavity increases. When the power adapter 10 outputs the second driving voltage, the temperature of the end of the corresponding heat exchange core assembly 3 located inside the heat exchange tube 6 increases, while the temperature of the end located inside the cavity decreases. The first driving voltage and the second driving voltage have opposite directions. Figure 1As shown, the heat exchange equipment includes a first cover 1, a second cover 2, a heat exchange core assembly 3, a motor 4, a fan 5, a heat exchange tube 6, an inlet pipe 7, an outlet pipe 8, a heat dissipation port 12, a support 13, and a support leg 14. The heat exchange core assembly 3 is electrically connected to the power adapter 10. When the power adapter 10 outputs a drive voltage, the temperature at one end of the heat exchange core assembly 3 rises and the temperature at the other end falls. When it is necessary to cool the fluid in the heat exchange tube 6, the temperature at the end of the heat exchange core assembly 3 that extends into the heat exchange tube 6 is lowered. At the same time, the motor 4 starts, driving the fan 5 to rotate and accelerating the airflow in the cavity, thereby increasing heat exchange.

[0043] When the fan 5 rotates, it draws air from outside the first cover 1 into the cavity through the heat dissipation port 12. The flowing air passes through the heat exchange core group 3 located at one end of the cavity and can carry away a large amount of heat, thereby achieving high and low temperature heat exchange balance of the heat exchange core group 3.

[0044] like Figure 2 As shown, the frame structure of this embodiment includes a first cover 1, a second cover 2, a support 13, and support legs 14. The first cover 1 has several heat dissipation vents 12 on its wall surface, and each vent 12 can be detachably fitted with a screen. The second cover 2 is made of heat-insulating material, and its wall surface has mounting holes corresponding to the openings, allowing the corresponding heat exchange core assembly 3 to extend into the cavity. The support 13 is fitted to the bottom of the first cover 1, and several evenly arranged support legs 14 are fitted to the bottom of the support 13. Both the first cover 1 and the second cover 2 are fitted to the support 13, and the bottom of the support 13 is fitted with steel support legs 14, ensuring stability and durability.

[0045] The second cover 2 can accommodate multiple heat exchange pipes 6, which can be installed independently or connected in parallel between an inlet pipe 7 and an outlet pipe 8. An insulation layer is provided between two adjacent heat exchange pipes 6, which divides the interior of the second cover 2 into several independent insulation spaces. Each insulation space contains a corresponding insulation pipe 6, thereby effectively preventing the temperature of the heat exchange pipes 6 from affecting each other.

[0046] like Figures 3-4As shown, the structure of a single heat exchange core assembly 3 is as follows: it includes an insulation cover 302 with a through hole in the middle, a semiconductor cooling chip 301 is installed inside the through hole, and a first fin 303 and a second fin 304 are respectively installed on the two side walls of the insulation cover 302. The first fin 303 is attached to one working end face of the semiconductor cooling chip 301 through the through hole, and the second fin 304 is attached to the other working end face of the semiconductor cooling chip 301 through the through hole. Based on the Peltier effect, the temperature rise and fall trends of the two working end faces of the semiconductor cooling chip 301 are opposite, that is, the temperature of one working end face rises and the temperature of the other working end face falls; and when the direction of its driving voltage changes, the working end face that was originally hot will now cool down, and the working end face that was originally cold will now cool up.

[0047] To increase the heat exchange effect, both sides of the semiconductor refrigeration chip 301 are bonded to the first fin 303 and the second fin 304 with thermally conductive silicone grease. The first fin 303 and the second fin 304 are used to increase the heat dissipation area of ​​the semiconductor refrigeration chip 301 and are made of metal materials with good thermal conductivity, such as copper or aluminum.

[0048] like Figure 5 As shown, the structure of the heat exchange tube 6 is as follows: it includes a hollow first tube body 601, inside which are installed several baffles 602 evenly spaced along the height direction of the first tube body 601. Each baffle 602 has a through-slot 603 on its end face for allowing fluid to pass through the first tube body 601. The through-slots 603 on adjacent baffles 602 are staggered, causing the fluid inside the first tube body 601 to flow in a serpentine pattern. Several first interfaces 604 are provided on the bottom wall of the first tube body 601, and the top of the first tube body 601... Several second interfaces 605 are provided on the wall surface; the structure of the inlet pipe 7 is as follows: it includes a hollow second pipe body 701, a fluid inlet 702 is provided on the side wall of the second pipe body 701, and a third interface 703 corresponding to the first interface 604 is provided on the top wall of the second pipe body 701; the structure of the outlet pipe 8 is as follows: it includes a hollow third pipe body 801, a fluid outlet 802 is provided on the side wall of the third pipe body 801, and a fourth interface 803 corresponding to the second interface 605 is provided on the top wall of the third pipe body 801. Multiple heat exchange tubes 6 can be connected in parallel between one inlet pipe 7 and one outlet pipe 8. By providing multiple third interfaces 703 and multiple fourth interfaces 803, the third interfaces 703 are connected to the first interfaces 604 of multiple heat exchange tubes 6, and the fourth interfaces 803 are connected to the second interfaces 605 of multiple heat exchange tubes 6, thereby connecting multiple heat exchange tubes 6 in parallel between one inlet pipe 7 and one outlet pipe 8;

[0049] The fluid that needs to exchange heat flows into the heat exchange tube 6 from the outside through the inlet pipe 7. The inlet pipe 7 is located at the bottom of the heat exchange tube 6, and the outlet pipe 8 is located at the top of the heat exchange tube 6. A baffle 602 with through grooves 603 is provided. At the same time, the through grooves 603 on two adjacent baffles 602 are arranged alternately, so that the fluid in the heat exchange tube 6 can flow in a serpentine direction from bottom to top, thereby enhancing the heat exchange efficiency.

[0050] After heat exchange in heat exchange core assembly 3, the fluid in heat exchange tube 6 flows out from outlet tube 8.

[0051] like Figure 6 As shown, an external control system is installed on the heat exchanger. The control system includes a microprocessor 11 electrically connected to the power adapter 10, and a temperature sensor 9 installed on the outlet pipe 8. The temperature sensor 9 transmits the temperature signal of the outlet pipe 8 to the microprocessor 11, and the microprocessor 11 controls the output signal of the power adapter 10 according to the signal sent by the temperature sensor 9. In this embodiment, a heat exchange tube 6 is provided, and five layers of partitions 602 are provided inside the heat exchange tube 6. The heat exchange tube 6 is configured with six heat exchange core groups 3. One heat exchange core group 3 is placed at the bottom of the heat exchange tube 6 through a corresponding opening, and the remaining heat exchange core groups 3 are placed on the partitions 602 of the corresponding layers through corresponding openings.

[0052] The power adapter 10 has two drive voltage output terminals, and each output terminal is connected in parallel with three heat exchange core groups 3, thereby dividing the six heat exchange core groups 3 into two independent heat exchange core groups 3. When the heat exchange equipment is working, when the heat exchange temperature difference of the fluid is large, both heat exchange core groups 3 work, and when the heat exchange temperature difference of the fluid is small, only one heat exchange core group 3 needs to work, thereby saving costs and improving capacity utilization.

[0053] To facilitate monitoring of whether the fluid temperature after heat exchange meets the required temperature, a temperature sensor 9 is installed at the outlet pipe 8. In this embodiment, there are two outlet pipes 8, and correspondingly, there are two temperature sensors 9. The temperature sensor 9 communicates with the microprocessor 11 and transmits the real-time collected temperature to the microprocessor 11. The microprocessor 11 controls the drive voltage value output by the power adapter 10 according to the real-time temperature, thereby adjusting the output temperature of the heat exchange core group 3.

[0054] Example 2:

[0055] Using the heat exchange device for fluid heat exchange provided in Embodiment 1, this embodiment provides a heat exchange method, including the following steps:

[0056] The fluid to be processed flows into the interior of the heat exchange tube 6 through the inlet pipe 7. The fluid inside the heat exchange tube 6 flows from bottom to top and flows out to the outside of the heat exchange tube 6 through the outlet pipe 8.

[0057] During the upward flow of fluid inside the heat exchange tube 6, when it is necessary to cool down the fluid inside the heat exchange tube 6, the power adapter 10 outputs a first driving voltage. The first driving voltage causes the temperature of one end of the heat exchange core group 3 located inside the heat exchange tube 6 to decrease, thereby reducing the temperature of the fluid inside the heat exchange tube 6.

[0058] Meanwhile, due to the Peltier effect, the temperature of one end of the heat exchange core 3 located in the cavity rises. At this time, the motor 4 drives the fan 5 to rotate, causing the air in the cavity to flow, thereby accelerating heat dissipation.

[0059] During the upward flow of fluid inside the heat exchange tube 6, when it is necessary to heat the fluid inside the heat exchange tube 6, the power adapter 10 outputs a second driving voltage. The second driving voltage causes the temperature of one end of the heat exchange core group 3 located inside the heat exchange tube 6 to rise, thereby increasing the temperature of the fluid inside the heat exchange tube 6.

[0060] Meanwhile, due to the Peltier effect, the temperature at one end of the heat exchange core assembly 3 located in the cavity decreases, at which point the motor 4 stops.

[0061] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A heat exchange device for fluid heat exchange, characterized in that: The device includes a first hollow cover (1), and a second hollow cover (2) is installed inside the first cover (1). A cavity is formed between the second cover (2) and the first cover (1). A motor (4) is fixed on the first cover (1). The output end of the motor (4) passes through the wall of the first cover (1) and is connected to a fan (5) located in the cavity. The motor (4) drives the fan (5) to rotate, thereby causing air to flow in the cavity. The second cover (2) is equipped with an array of heat exchange components. Each heat exchange component includes a hollow heat exchange tube (6). Several openings are provided on the side wall of a single heat exchange tube (6). A heat exchange core assembly (3) is installed in each opening. One end of the single heat exchange core assembly (3) extends into the corresponding heat exchange tube (6), while the other end extends into the cavity. The single heat exchange core assembly (3) is electrically connected to the output end of the power adapter (10). An inlet pipe (7) for allowing fluid to flow into the heat exchange tube (6) is installed at the bottom of the single heat exchange tube (6), and an outlet pipe (8) for allowing fluid to flow out of the heat exchange tube (6) is installed at the top of the single heat exchange tube (6). When the power adapter (10) outputs the first driving voltage, the temperature of one end of the corresponding heat exchange core group (3) located inside the heat exchange tube (6) decreases, while the temperature of the other end located inside the cavity increases; when the power adapter (10) outputs the second driving voltage, the temperature of one end of the corresponding heat exchange core group (3) located inside the heat exchange tube (6) increases, while the temperature of the other end located inside the cavity decreases; the first driving voltage and the second driving voltage are in opposite directions; The second cover (2) is made of heat-insulating material. The wall surface of the second cover (2) is provided with mounting holes that correspond one-to-one with the openings. The mounting holes are used to allow the corresponding heat exchange core group (3) to extend into the cavity. The structure of a single heat exchange core assembly (3) is as follows: it includes an insulation cover (302) with a through hole in the middle, in which a semiconductor cooling chip (301) is installed. A first fin (303) and a second fin (304) are respectively installed on the two side walls of the insulation cover (302). The first fin (303) is attached to one working end face of the semiconductor cooling chip (301) through the through hole, and the second fin (304) is attached to the other working end face of the semiconductor cooling chip (301) through the through hole. The structure of the heat exchange tube (6) is as follows: it includes a hollow first tube body (601), and several partitions (602) are installed inside the first tube body (601) at uniform intervals along the height direction of the first tube body (601). Each partition (602) has a through groove (603) on its end face for allowing the fluid inside the first tube body (601) to pass through. The through grooves (603) on two adjacent partitions (602) are staggered, so that the fluid inside the first tube body (601) flows in a serpentine manner. The bottom wall of the first tube (601) is provided with several first interfaces (604), and the top wall of the first tube (601) is provided with several second interfaces (605).

2. The heat exchange device for fluid heat exchange as described in claim 1, characterized in that: The first cover (1) has several heat dissipation vents (12) on its wall surface, and each heat dissipation vent (12) can be detachably fitted with a wind screen.

3. The heat exchange device for fluid heat exchange as described in claim 1, characterized in that: The structure of the inlet pipe (7) is as follows: it includes a hollow second pipe body (701), a fluid inlet (702) is provided on the side wall of the second pipe body (701), and a third interface (703) is provided on the top wall of the second pipe body (701) and is connected to the first interface (604).

4. The heat exchange device for fluid heat exchange as described in claim 1, characterized in that: The structure of the outlet pipe (8) is as follows: it includes a hollow third pipe body (801), a fluid outlet (802) is provided on the side wall of the third pipe body (801), and a fourth interface (803) is provided on the bottom wall of the third pipe body (801) to be connected to the second interface (605).

5. The heat exchange device for fluid heat exchange as described in claim 1, characterized in that: The bottom of the first cover (1) is fitted with a support (13), and the bottom of the support (13) is fitted with several evenly arranged support legs (14).

6. The heat exchange device for fluid heat exchange as described in claim 1, characterized in that: The heat exchanger is externally equipped with a control system, which includes a microprocessor (11) electrically connected to the power adapter (10) and a temperature sensor (9) installed on the outlet pipe (8). The temperature sensor (9) transmits the temperature signal of the outlet pipe (8) to the microprocessor (11), and the microprocessor (11) controls the output signal of the power adapter (10) according to the signal sent by the temperature sensor (9).

7. A heat exchange method utilizing the heat exchange device for fluid heat exchange as described in claim 1, characterized in that: Includes the following steps: The fluid to be processed flows into the interior of the heat exchange tube (6) through the inlet pipe (7). The fluid inside the heat exchange tube (6) flows from bottom to top and flows out to the outside of the heat exchange tube (6) through the outlet pipe (8). During the process of the fluid flowing from bottom to top inside the heat exchange tube (6), when it is necessary to cool down the fluid inside the heat exchange tube (6), the power adapter (10) outputs a first driving voltage. The first driving voltage causes the temperature of one end of the heat exchange core group (3) located inside the heat exchange tube (6) to decrease, thereby reducing the temperature of the fluid inside the heat exchange tube (6). At the same time, the temperature of one end of the heat exchange core assembly (3) located in the cavity rises. At this time, the motor (4) drives the fan (5) to rotate, causing the air in the cavity to flow, thereby accelerating heat dissipation. During the process of the fluid flowing from bottom to top inside the heat exchange tube (6), when it is necessary to heat the fluid inside the heat exchange tube (6), the power adapter (10) outputs a second driving voltage. The second driving voltage causes the temperature of one end of the heat exchange core assembly (3) located inside the heat exchange tube (6) to rise, thereby increasing the temperature of the fluid inside the heat exchange tube (6). At the same time, the temperature of one end of the heat exchange core assembly (3) located in the cavity decreases, at which point the motor (4) stops.

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