A heat sink drying apparatus and method

Abstract

This application relates to the field of aircraft radiator drying technology, specifically disclosing a radiator drying apparatus and method. The radiator drying apparatus includes a sealed box, a hot air outlet mechanism, a transfer pipe, an initial exhaust mechanism, a subsequent exhaust mechanism, and a vacuuming mechanism. The sealed box is filled with a phase change heat storage material. One end of the hot air outlet mechanism extends into the sealed box to connect to the inlet of the radiator's hot side channel. The transfer pipe connects the outlet of the radiator's hot side channel to the inlet of the cold side channel. One end of the initial exhaust mechanism connects to the outlet of the radiator's cold side channel. The initial exhaust mechanism can selectively exhaust air to the outside or inside the box. Both the subsequent exhaust mechanism and the vacuuming mechanism connect to the internal space of the sealed box. This application uses hot air blowing under normal pressure and boiling point evaporation technology to quickly remove most of the moisture from the radiator, and uses phase change heat storage technology to recover the waste heat from the exhaust, providing a heat source for vacuum drying. This method has a low heating temperature, good temperature uniformity, and short heating time.

Description

Technical Field

[0001] This application relates to the field of aircraft radiator drying technology, specifically to a radiator drying apparatus and method. Background Technology

[0002] Aircraft engines produce high-temperature, high-pressure gases, which are cooled by radiators and then fed into the air circulator. The air circulator delivers cool air to the cabin to regulate the cabin temperature to a comfortable level.

[0003] The aircraft radiator consists of an outer shell with four openings. Inside the shell are heat transfer fluid pipes and multiple cooling fins. The two ends of the heat transfer fluid pipes connect to the left and right openings of the outer shell, forming hot-side channels. The middle section of the heat transfer fluid pipes bends into multiple parallel pipes, and multiple cooling fins are connected to the outer walls of these parallel pipes. The top and bottom openings of the outer shell allow cooling air or cooling water to pass through, forming cold-side channels. The channels connecting the left and right openings and the channels connecting the top and bottom openings are not connected within the radiator. The heat transfer fluid flows within the hot-side channels. The pipes carry the heat generated by the engine to the fins, where the large surface area of ​​the fins dissipates the heat.

[0004] After a period of use, aircraft radiators accumulate a lot of dirt inside the pipes and dust on the fins, which reduces the radiator's heat dissipation efficiency, thus requiring cleaning. After cleaning, the internal pipes and fin surfaces of the aircraft radiator will still have a lot of water droplets and some flowing water, making natural air drying very slow. Therefore, the cleaned aircraft radiator is usually placed in an oven and baked at 150~200℃ for about 2 hours to completely dry the moisture inside the radiator. This drying method is energy-intensive and time-consuming. Summary of the Invention

[0005] In view of the problems of high energy consumption and long time consumption in the current method of drying and cleaning radiators in ovens, this application proposes the following solution to reduce energy consumption and drying time.

[0006] In the first aspect, this application proposes a radiator drying device and adopts the following technical solution.

[0007] A radiator drying device includes a sealed box, a hot air outlet mechanism, a transfer pipe, an initial exhaust mechanism, a subsequent exhaust mechanism, and a vacuuming mechanism.

[0008] The sealed box is filled with a phase change heat storage material with a melting point of 70℃~90℃ and a boiling point greater than 200℃. One end of the hot air outlet mechanism extends into the sealed box to connect to the inlet of the hot side channel of the radiator. The adapter pipe is located in the sealed box to connect the outlet of the hot side channel of the radiator to the inlet of the cold side channel.

[0009] The initial venting mechanism includes an initial vent pipe, an initial vent valve, several branch pipes, and several recirculating vent valves. One end of the initial vent pipe is located inside the sealed housing, connecting to the cold side channel outlet of the radiator, and the other end is located outside the sealed housing. The initial vent valve is installed on the initial vent pipe. Each branch pipe located inside the sealed housing connects to the section of the initial vent pipe preceding the initial vent valve. One recirculating vent valve is installed on each branch pipe.

[0010] One end of the openable and closable exhaust mechanism is connected to the internal space of the sealed box, and the other end is located outside the sealed box. One end of the vacuuming mechanism is connected to the internal space of the sealed box, and the other end is located outside the sealed box.

[0011] By adopting the above technical solution, the radiator is installed in a sealed box. The hot air outlet mechanism is connected to the inlet of the hot side channel of the radiator, the transfer pipe is connected to the outlet of the hot side channel and the inlet of the cold side channel, and the initial exhaust pipe is connected to the outlet of the cold side channel. After the connection is completed, the hot air outlet mechanism produces hot air that passes through the hot side channel and the cold side channel of the radiator in sequence. On the one hand, the airflow blows away most of the residual moisture; on the other hand, the moisture that is difficult to blow off from the fin surface evaporates directly into water vapor under the action of the hot air and is carried away by the airflow. In the early stage of drying, since there is a lot of moisture inside the radiator, water vapor can be discharged from the initial exhaust pipe. In the middle stage of drying, after the moisture inside the radiator has been significantly reduced, water vapor can be discharged from the branch pipe, circulated inside the sealed box, and then discharged from the final exhaust mechanism. During this process, the phase change heat storage material changes from solid to liquid. In the final stage of drying, the vacuum can be turned on and the hot air outlet mechanism can be turned off, using the residual heat of the radiator and the heat released during the solidification process of the phase change heat storage material to dry the radiator. The device produces hot air at a relatively low temperature, such as 110±10℃. Once blown into the sealed chamber, the hot air can melt the phase change heat storage material. The radiator is then dried through air drying, thermal evaporation, vacuum drying, and by utilizing the heat released during the solidification of the phase change heat storage material. Compared to oven drying, the drying time using this device is shorter and the energy consumption is lower.

[0012] In a preferred embodiment of the radiator drying device, the phase change heat storage material is an alloy or naphthalene with a melting point of 80°C.

[0013] By adopting the above technical solution, the alloy or naphthalene with a melting point of 80℃ allows the hot air temperature to be set at a relatively low 110±10℃. This not only melts the alloy or naphthalene but also allows it to gradually solidify after the hot air is stopped. The solidification process is exothermic, and maintaining a temperature of 80℃ during solidification heats the air inside the sealed chamber, ensuring high drying efficiency during this stage. The alloy with a melting point of 80℃ can be a tin-bismuth alloy.

[0014] A preferred embodiment of the radiator drying device is that the sealed box includes an insulation layer, an outer liner, and an inner liner. The insulation layer is fitted over the outer liner. The outer liner seamlessly encloses the inner liner. The phase change heat storage material is filled between the outer liner and the inner liner.

[0015] By adopting the above technical solution, the outer and inner liner form a sealed interlayer, in which the phase change heat storage material is solidified and melted, preventing leakage. The insulation layer insulates the interlayer and the phase change heat storage material, saving energy and improving the utilization rate of the heat released by the phase change heat storage material during the liquid-to-solid transition process compared to the air inside the inner liner.

[0016] A preferred embodiment of the radiator drying device is that the insulation layer is 8-12 mm thick silica aerogel. The outer liner is 0.8-1.2 mm thick stainless steel. The inner liner is 2.5-3.5 mm thick stainless steel. The phase change heat storage material fills the space between the outer liner and the inner liner.

[0017] By adopting the above technical solutions, the silicone aerogel has good thermal insulation performance and reduces heat loss; the inner stainless steel layer is heat-resistant and has fast heat transfer, which facilitates heat transfer to the phase change heat storage material.

[0018] In a preferred embodiment of the radiator drying device, the sealed enclosure further includes a phase change temperature sensor. The phase change temperature sensor is attached to the outer casing.

[0019] By adopting the above technical solution, when the phase change temperature sensor detects a temperature exceeding the melting point of the phase change heat storage material, it indicates that the phase change heat storage material has melted, and then the next drying stage can begin.

[0020] A preferred embodiment of the radiator drying device includes a hot air outlet mechanism comprising a fan, an air inlet duct, an air duct valve, a heating assembly, and an air duct temperature sensor. The fan is located outside the sealed enclosure. The inlet end of the air inlet duct is connected to the fan, and the outlet end is located inside the sealed enclosure, connecting to the inlet of the radiator's hot-side channel. The air duct valve is installed on the air inlet duct. The heating assembly is connected to the air inlet duct. The air duct temperature sensor is installed in the section of the air inlet duct downstream of the heating assembly.

[0021] By adopting the above technical solution, the duct temperature sensor senses the temperature of the hot air, so the system can adjust the power of the heating component to adjust the temperature to the target range, thereby improving the drying speed and reducing energy consumption.

[0022] In a preferred embodiment of the radiator drying device, the hot air outlet mechanism further includes a flow meter. The flow meter is installed on the section of the air inlet pipe located before the heating assembly.

[0023] By adopting the above technical solution, the flow meter provides feedback on the output air flow, thereby allowing the fan power to be adjusted to achieve the target air volume.

[0024] Secondly, this application also proposes a radiator drying method, and adopts the following technical solution.

[0025] A radiator drying method is performed using the aforementioned radiator drying apparatus. The radiator drying method includes: Assembly stage: The cleaned and dried radiator is placed into the sealed box. One end of the hot air outlet mechanism located in the sealed box is connected to the hot edge channel inlet of the radiator. One end of the adapter pipe is connected to the hot edge channel outlet of the radiator. The other end of the adapter pipe is connected to the cold edge channel inlet of the radiator. One end of the initial exhaust pipe located in the sealed box is connected to the cold edge channel outlet of the radiator.

[0026] Initial drying stage: Close each of the circulating exhaust valves, the subsequent exhaust mechanism and the vacuum mechanism, open the initial exhaust valve and the hot air outlet mechanism, adjust the hot air produced by the hot air outlet mechanism to reach 110±10℃, the hot air first blows through the hot side channel of the radiator, then through the adapter pipe, and then blows through the cold side channel of the radiator, and finally is discharged from the initial exhaust pipe.

[0027] Circulating drying stage: Open each of the circulating exhaust valves, close the initial exhaust valve, open the downstream exhaust mechanism, and the hot air produced by the hot air outlet mechanism blows sequentially through the hot side channel of the radiator, the transfer pipe, and the cold side channel of the radiator, and then flows out from the circulating exhaust valve into the sealed box. After circulating in the sealed box, it is discharged from the downstream exhaust mechanism. The hot air melts the phase change heat storage material during the circulation process in the sealed box.

[0028] Vacuum drying stage: Close the hot air outlet mechanism and the downstream exhaust mechanism, open the sealed box, disconnect the connection between the hot air outlet mechanism, the adapter pipe, the initial exhaust pipe and the radiator, close the sealed box, and turn on the vacuum pumping mechanism to reduce the air pressure inside the sealed box, so that the radiator dries.

[0029] By adopting the above technical solution, in the initial drying stage, due to the high moisture content inside the radiator, the gas with high moisture content is discharged outside the sealed box by opening the initial exhaust valve. In the circulating drying stage, the hot air circulates inside the box and is discharged outside the sealed box through the subsequent exhaust mechanism. During the circulation of the hot air inside the box, the outer surface of the radiator is dried and the surrounding wall structure of the box is heated. When the temperature of the surrounding wall of the box reaches above the melting point of the phase change heat storage material, the phase change heat storage material absorbs heat and turns into a liquid state, thereby achieving the function of heat storage. In the vacuum drying stage, the pressure inside the box gradually decreases. The boiling point of the unevaporated water in the radiator decreases under low pressure. The residual heat of the radiator and the latent heat of phase change of the phase change heat storage material from liquid to solid are used to heat the radiator, accelerating the vaporization of moisture, thereby achieving the purpose of medium and low temperature vacuum drying.

[0030] A preferred embodiment of the radiator drying method is that the initial drying stage lasts for 4-6 minutes, the cyclic drying stage lasts for 8-12 minutes, and the vacuum drying stage lasts for 20-30 minutes.

[0031] By adopting the above technical solution, most of the moisture in the radiator can be blown out and dried by hot air in the first 4-6 minutes; in the middle 8-12 minutes, the surface of the radiator and the walls of the heated sealing box can be dried, causing the phase change heat storage material to melt and store heat. In the last 20-30 minutes, the radiator's interior and exterior are completely dried through vacuum decompression, residual heat from the radiator, and heat storage by the phase change heat storage material.

[0032] In summary, the radiator drying device and method of this application have the following beneficial effects: This application uses hot gas blowing and boiling point evaporation technology under normal pressure to quickly remove most of the water vapor from the radiator; This application uses vacuum drying technology at medium and low temperatures to completely remove residual moisture inside and outside the hot and cold channels of the radiator; This application uses phase change heat storage technology to recover exhaust waste heat and provide a heat source for vacuum drying.

[0033] Compared to conventional oven-based drying methods, this method features lower heating temperatures, better temperature uniformity, and shorter heating times, virtually eliminating thermal stress damage to the radiator structure. The drying time is approximately one-third that of oven-based drying methods, and energy consumption is reduced by 30%. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of a radiator drying device connected to a radiator.

[0035] Figure 2 This is a schematic diagram of the operation panel of a radiator drying device.

[0036] Figure 3 This is a schematic diagram showing the connection between the door and the body of the sealed box.

[0037] Reference numerals: 1. Sealed box; 2. Adaptor pipe; 3. Control panel; 11. Box door; 12. Box body; 101. Insulation layer; 102. Outer liner; 103. Inner liner; 104. Phase change heat storage material; 201. Fan; 202. Air inlet pipe; 203. Flow meter; 204. Air duct valve; 205. Air duct temperature sensor; 206. Power supply; 207. Electromagnetic heater; 4. Flexible quick-release connector; 501. Initial exhaust pipe; 502. Initial exhaust valve; 503. Branch pipe; 504. Circulating exhaust valve; 601. Rear exhaust pipe; 602. Rear exhaust valve; 701. Vacuum pump; 702. Vacuum pipe; 703. Vacuum valve. Detailed Implementation

[0038] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the following embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] like Figure 1 A radiator drying device includes a sealed box 1, a hot air outlet mechanism, a transfer pipe 2, an initial exhaust mechanism, a subsequent exhaust mechanism, and a vacuuming mechanism.

[0040] like Figure 2 The radiator drying device also includes a control system and an operation panel 3. The control system is electrically connected to the operation panel 3, the hot air outlet mechanism, the initial exhaust mechanism, the final exhaust mechanism, and the vacuum mechanism.

[0041] like Figure 3 The sealed box 1 has a door 11 and a box body 12. The door 11 covers the box body 12 and can close or open the box body 12 to install the radiator into the box body 12.

[0042] The door 11 and the body 12 have independent structures, each with three layers: an insulation layer 101, an outer liner 102, and an inner liner 103, from the outside in. The outer liner 102 and the inner liner 103 are seamlessly connected; they can be integrally molded to form a closed interlayer. A phase change thermal storage material 104 is filled between the outer liner 102 and the inner liner 103, preferably filling the space between them. The insulation layer 101 surrounds the outer liner 102. The insulation layer 101 can be a 10mm thick silica aerogel. The outer liner 102 can be a 1mm thick stainless steel. The inner liner 103 can be a 3mm thick stainless steel.

[0043] The cabinet door 11 and cabinet body 12 have mutually separated insulation layers 101, and each of the cabinet door 11 and cabinet body 12 has an integrally formed outer liner 102 and inner liner 103. The integrally formed outer liner 102 and inner liner 103 of the cabinet door 11 have a square structure, and the insulation layer 101 of the cabinet door 11 has a square structure and is attached to the outside of the outer liner 102. The space between the outer liner 102 and inner liner 103 of the cabinet door 11 is filled with phase change heat storage material 104. The integrally formed outer liner 102 and inner liner 103 of the cabinet body 12 have a square box structure with one open side, and the insulation layer 101 of the cabinet body 12 also has a square box structure with one open side, and the insulation layer 101 of the cabinet body 12 is attached to the outside of the outer liner 102 of the cabinet body 12. The space between the outer liner 102 and inner liner 103 of the cabinet body 12 is filled with phase change heat storage material 104. The door 11 covers the opening of the housing 12, sealing the internal space and reducing internal heat loss. The phase change heat storage material 104 has a melting point of 70℃~90℃ and a boiling point greater than 200℃. For example, it could be an alloy with a melting point of 80℃ (boiling point greater than 200℃) or naphthalene (boiling point 217.9℃). It can be melted by hot air with an initial temperature of 110±10℃ and a circulating temperature of approximately 100℃, but it does not easily vaporize. Furthermore, it can solidify rapidly after the hot air is turned off, releasing a large amount of heat. This, combined with the vacuum process, reduces the pressure on the radiator, lowering its boiling point and drying it. To ensure the phase change heat storage material 104 is fully melted, the device also includes a phase change temperature sensor attached to the outer wall of the outer casing 102 and encased in insulation layer 101. If the temperature sensed by the phase change temperature sensor is greater than the melting point of the phase change heat storage material 104, it indicates that the phase change heat storage material 104 has completely melted; otherwise, it is necessary to increase the temperature of the hot air delivered by the hot air outlet mechanism or increase the air volume.

[0044] The hot air supply mechanism includes a fan 201, an inlet duct 202, a flow meter 203, a duct valve 204, a heating assembly, and a duct temperature sensor 205. The fan 201 is installed outside the sealed housing 1. One end of the inlet duct 202 is connected to the outlet of the fan 201, and the other end is inserted into the sealed housing 1 and connected to a flexible quick-release connector 4 for connecting to the inlet of the radiator's hot side channel. The flow meter 203 and the duct valve 204 are both installed on the section of the inlet duct 202 located outside the sealed housing 1. The duct valve 204 can be an electric vacuum butterfly valve. The heating assembly includes a power supply 206 and an electromagnetic heater 207. The power supply 206 is located outside the sealed housing 1 and is connected to the electromagnetic heater 207 by wires. The electromagnetic heater 207 is fitted onto the section of the duct located inside the sealed housing 1. The duct temperature sensor 205 is installed in the section of the inlet duct 202 after the electromagnetic heater 207 to monitor the temperature of the heated air.

[0045] The adapter pipe 2 is installed inside the sealed box 1. The adapter pipe 2 is a C-shaped pipe with flexible quick-release connectors 4 installed at both ends, which are used to connect the hot side channel outlet and the cold side channel inlet of the radiator, respectively.

[0046] The initial venting mechanism includes an initial vent pipe 501, an initial vent valve 502, two branch pipes 503, and two recirculating vent valves 504. The initial vent pipe 501 passes through the wall of the sealed housing 1. A flexible quick-release connector 4 is installed at one end of the initial vent pipe 501 inside the sealed housing 1 for connecting to the cold-side channel outlet of the radiator. The initial vent valve 502 can be an electric vacuum butterfly valve, installed on the section of the initial vent pipe 501 outside the sealed housing 1. The two branch pipes 503 are located inside the sealed housing 1. Each branch pipe 503 connects to one side of the initial vent pipe 501. A recirculating vent valve 504 is installed on each branch pipe 503.

[0047] The exhaust mechanism includes an exhaust pipe 601 and an exhaust valve 602. One end of the exhaust pipe 601 connects to the inside of the sealed housing 1, and the other end is located outside the sealed housing 1. The exhaust valve 602 is installed on the section of the exhaust pipe 601 located outside the sealed housing 1. The exhaust valve 602 can be an electric vacuum butterfly valve.

[0048] The vacuum pumping mechanism includes a vacuum pump 701, a vacuum tube 702, and a vacuum valve 703. The vacuum pump 701 is installed outside the sealed housing 1. One end of the vacuum tube 702 is connected to the vacuum pump 701, and the other end passes into the sealed housing 1. The vacuum valve 703 can be an electric vacuum butterfly valve, installed on the section of the vacuum tube 702 located outside the sealed housing 1.

[0049] The control system is electrically connected to various valves, fans 201, power supply 206, vacuum pump 701, phase change temperature sensor, duct temperature sensor 205 and flow meter 203 to automatically perform related operations.

[0050] The method for drying radiators using the above-mentioned radiator drying device includes an assembly stage, an initial drying stage, a circulating drying stage, and a vacuum drying stage. The specific steps for each stage are as follows.

[0051] Assembly stage: After cleaning and drying, the radiator is placed into the sealed box 1. The flexible quick-release connector 4 of the hot air outlet pipe is connected to the hot side channel inlet of the radiator. The two ends of the adapter pipe 2 with the flexible quick-release connector 4 are connected to the hot side channel outlet and the cold side channel inlet of the radiator, respectively. The end of the initial exhaust pipe 501 with the flexible quick-release connector 4 in the sealed box 1 is connected to the cold side channel outlet of the radiator.

[0052] Initial drying stage: Close the two circulating exhaust valves 504, the downstream exhaust valve 602, and the vacuum valve 703. Open the initial exhaust valve 502, fan 201, duct valve 204, and power supply 206 to the heating element. Flow meter 203 senses the air speed produced by fan 201, and duct temperature sensor 205 senses the air temperature after heating by the heating element. The control system acquires the air speed and air temperature information and compares it with the set air speed and air temperature. If they do not match, the air speed and air temperature are adjusted to meet the set requirements by adjusting the fan speed 201 and the power of the heating element. This application regulates the hot air temperature produced by the hot air mechanism to 110±10℃. Figure 1 Hot air first blows through the hot side channels on the left and right sides of the radiator, then through the adapter pipe 2, and further through the cold side channels on the top and bottom of the radiator, finally exiting from the initial exhaust pipe 501. This drying process involves two aspects: firstly, high-speed airflow removes most of the residual moisture from the hot and cold side channels inside the radiator; secondly, moisture adhering to the fin surface and difficult to blow away evaporates directly into water vapor under the high temperature of 110±10℃ and is carried away by the airflow. During the first 5 minutes of operation of the drying device, due to the high moisture content inside the radiator, the initial exhaust valve 502 is opened to directly discharge the moisture-laden gas outside the housing 12 (at this time, the two circulating exhaust valves 504 are in the closed position).

[0053] Circulating drying stage: Open each circulating exhaust valve 504, close the initial exhaust valve 502, and open the downstream exhaust valve 602. Maintain the temperature of the air produced by the fan 201 after being heated by the heating components at 110±10℃. This hot air blows sequentially through the hot side channel of the radiator, the transfer pipe 2, and the cold side channel of the radiator, and then is discharged from the two branch pipes 503 into the sealed box 1. After circulating in the sealed box 1, it is discharged from the downstream exhaust pipe 601. During this circulation stage, the temperature of the hot air circulating in the sealed box 1 is about 100℃. During the circulation of the hot air in the box 12, the outer surface of the radiator is dried and the surrounding wall structure of the box 12 is heated. When the temperature of the outer shell 102 sensed by the phase change temperature sensor reaches above 80℃, the low melting point phase change heat storage material 104 in the interlayer of the box 12 structure completely turns into liquid due to the absorption of heat, thereby achieving the function of heat storage. This stage lasts for 10 minutes.

[0054] Vacuum drying stage: Turn off the fan 201, air duct valve 204, heating components and exhaust valve 602, open the sealed box 1, disconnect the air duct, adapter pipe 2, initial exhaust pipe 501 and radiator, then close the sealed box 1, open the vacuum valve 703, and start the vacuum pump 701. At this time, the pressure inside the box 12 gradually decreases, and the boiling point of the unevaporated water in the radiator decreases under low pressure. The residual heat of the radiator and the latent heat of phase change released by the phase change heat storage material 104 from liquid to solid are used to heat the radiator, accelerate the vaporization of water, and thus achieve the purpose of vacuum drying the radiator.

[0055] This application employs atmospheric pressure hot air blowing and boiling point evaporation technology to rapidly remove most of the moisture from the radiator. It utilizes low-to-medium temperature vacuum drying technology to thoroughly remove residual moisture from the inside and outside of the radiator's hot and cold channels. Furthermore, it employs liquid metal phase change heat storage technology to recover exhaust waste heat, providing a heat source for vacuum drying. Compared to conventional oven-heated drying methods, this method achieves lower drying temperatures, better temperature uniformity, and shorter heating times, causing virtually no thermal stress damage to the radiator structure. The drying time is approximately one-third that of oven-heated methods, and energy consumption is reduced by 30%.

[0056] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A radiator drying device, characterized in that, Includes a sealed box (1), a hot air outlet mechanism, a transfer pipe (2), an initial exhaust mechanism, a subsequent exhaust mechanism, and a vacuum mechanism; The sealed box (1) is filled with a phase change heat storage material (104) with a melting point of 70℃~90℃ and a boiling point greater than 200℃; one end of the hot air outlet mechanism is inserted into the sealed box (1) to connect the inlet of the hot side channel of the radiator; the connecting pipe (2) is set in the sealed box (1) to connect the outlet of the hot side channel of the radiator to the inlet of the cold side channel. The initial exhaust mechanism has an initial exhaust pipe (501), an initial exhaust valve (502), several branch pipes (503) and several circulating exhaust valves (504); one end of the initial exhaust pipe (501) is located in the sealed box (1) for connecting to the cold side channel outlet of the radiator, and the other end is located outside the sealed box (1); The initial exhaust valve (502) is installed on the initial exhaust pipe (501); each of the branch pipes (503) located in the sealing box (1) is connected to the pipe section of the initial exhaust pipe (501) before the initial exhaust valve (502); a circulating exhaust valve (504) is installed on each of the branch pipes (503). One end of the openable and closable exhaust mechanism is connected to the internal space of the sealed box (1), and the other end is located outside the sealed box (1); one end of the vacuum mechanism is connected to the internal space of the sealed box (1), and the other end is located outside the sealed box (1).

2. The radiator drying device according to claim 1, characterized in that, The phase change heat storage material (104) is an alloy or naphthalene with a melting point of 80°C.

3. The radiator drying device according to claim 1 or 2, characterized in that, The sealed box (1) includes an insulation layer (101), an outer liner (102), and an inner liner (103); the insulation layer (101) is fitted over the outer liner (102); the outer liner (102) seamlessly wraps the inner liner (103); the phase change heat storage material (104) is filled between the outer liner (102) and the inner liner (103).

4. The radiator drying device according to claim 3, characterized in that, The insulation layer (101) is 8-12 mm thick silica aerogel; the outer liner (102) is 0.8-1.2 mm thick stainless steel; the inner liner (103) is 2.5-3.5 mm thick stainless steel; the phase change heat storage material (104) fills the space between the outer liner (102) and the inner liner (103).

5. The radiator drying device according to claim 3, characterized in that, The sealed box (1) also includes a phase change temperature sensor; the phase change temperature sensor is attached to the outer shell (102).

6. The radiator drying device according to claim 1, characterized in that, The hot air outlet mechanism includes a fan (201), an air inlet pipe (202), an air duct valve (204), a heating component, and an air duct temperature sensor (205); the fan (201) is located outside the sealed box (1); the inlet end of the air inlet pipe (202) is connected to the fan (201), and the outlet end is located inside the sealed box (1), for connecting to the hot side channel inlet of the radiator; the air duct valve (204) is installed on the air inlet pipe (202); the heating component is connected to the air inlet pipe (202); the air duct temperature sensor (205) is installed in the section of the air inlet pipe (202) after the heating component.

7. The radiator drying apparatus according to claim 6, characterized in that, The hot air outlet mechanism also includes a flow meter (203); the flow meter (203) is installed on the section of the air inlet pipe (202) before the heating assembly.

8. A method for drying a radiator, characterized in that, The radiator drying apparatus according to any one of claims 1-7 is used to perform the drying; the radiator drying method includes: Assembly stage: The cleaned and dried radiator is placed into the sealed box (1), the end of the hot air outlet mechanism located in the sealed box (1) is connected to the hot edge channel inlet of the radiator, the end of the adapter pipe (2) is connected to the hot edge channel outlet of the radiator, the other end of the adapter pipe (2) is connected to the cold edge channel inlet of the radiator, and the end of the initial exhaust pipe (501) located in the sealed box (1) is connected to the cold edge channel outlet of the radiator. Initial drying stage: Close each of the circulating exhaust valves (504), the downstream exhaust mechanism and the vacuum mechanism, open the initial exhaust valve (502) and the hot air outlet mechanism, adjust the hot air produced by the hot air outlet mechanism to reach 110±10℃, the hot air first blows through the hot side channel of the radiator, then through the adapter pipe (2), and then blows through the cold side channel of the radiator, and finally is discharged from the initial exhaust pipe (501); Circulating drying stage: Open each of the circulating exhaust valves (504), close the initial exhaust valve (502), open the downstream exhaust mechanism, and the hot air produced by the hot air outlet mechanism blows through the hot side channel of the radiator, the transfer pipe (2), and the cold side channel of the radiator in sequence, and then flows out from the circulating exhaust valve (504) into the sealed box (1). After circulating in the sealed box (1), it is discharged from the downstream exhaust mechanism. The hot air melts the phase change heat storage material (104) during the circulation process in the sealed box (1). Vacuum drying stage: Close the hot air outlet mechanism and the exhaust mechanism, open the sealing box (1), disconnect the hot air outlet mechanism, the adapter pipe (2), the initial exhaust pipe (501) and the radiator, close the sealing box (1), and turn on the vacuuming mechanism to reduce the air pressure inside the sealing box (1) so that the radiator is dried.

9. The radiator drying method according to claim 8, characterized in that, The initial drying stage lasts for 4-6 minutes, the cyclic drying stage lasts for 8-12 minutes, and the vacuum drying stage lasts for 20-30 minutes.

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