Radiator drying device and method

Abstract

The invention relates to the technical field of aircraft radiator drying, and particularly discloses a radiator drying device and method. The radiator drying device comprises a sealing box, a hot air outlet mechanism, an adapter pipe, an initial exhaust mechanism, a subsequent exhaust mechanism and a vacuumizing mechanism. And the box wall of the sealing box is filled with a phase change heat storage material. One end of the hot air outlet mechanism penetrates into the sealing box to be communicated with a hot side channel inlet of the radiator. The adapter is used for communicating a hot side channel outlet to a cold side channel inlet of the radiator. One end of the initial exhaust mechanism communicates with a cold side channel outlet of the radiator. The initial exhaust mechanism can selectively exhaust air to the outside of the box body or exhaust air to the inside of the box body. The back-stroke exhaust mechanism and the vacuumizing mechanism are both communicated with the inner space of the sealing box. Most water vapor of the radiator is quickly removed by adopting a hot air blowing and boiling point evaporation technology under normal pressure, and exhaust waste heat is recovered by adopting a phase change heat storage technology to provide a heat source for vacuum drying. The method is low in heating temperature, good in temperature uniformity and short in heating time.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft radiator drying, and in particular to a radiator drying device and method. Background Art

[0002] The aircraft engine produces high-temperature and high-pressure gas, which is cooled by the radiator and then passed into the air cycle machine, which delivers cold air to the cabin to adjust the cabin temperature to a suitable temperature.

[0003] The aircraft radiator includes a shell with four openings, and a heat medium pipe and a plurality of heat dissipation fins are installed in the shell. The two ends of the heat medium pipe are connected to the left and right openings of the shell, which are hot side channels. The middle part of the heat medium pipe is bent into multiple parallel pipes, and multiple heat dissipation fins are connected to the outer walls of these multiple parallel pipes. The upper and lower openings of the shell pass cooling air or cooling water, which are cold side channels. The channel connecting the left and right openings of the radiator and the channel connecting the upper and lower openings are not connected in the radiator. The heat medium flows in the hot side channel. The pipe brings the heat generated by the engine to the fins, and the heat is dissipated through the fins with a large surface area.

[0004] After using the aircraft radiator for a period of time, a lot of dirt will accumulate in the pipes and dust will accumulate on the fins, which reduces the heat dissipation efficiency of the radiator, so the radiator needs to be cleaned. After cleaning, a large amount of water droplets will adhere to the internal pipes and fin surfaces of the aircraft radiator and store some running water, which makes it very slow for the radiator to dry naturally. Therefore, the cleaned aircraft radiator is usually placed in an oven and baked at 150~200℃ for about 2 hours to completely dry the water inside the radiator. This drying method consumes a lot of energy and takes a long time. Summary of the invention

[0005] In view of the problems of high energy consumption and long time consumption in the current method of drying the cleaned radiator in an oven, the present application proposes the following solution to reduce energy consumption and shorten drying time.

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

[0007] A radiator drying device comprises a sealing box, a hot air outlet mechanism, a transfer tube, an initial exhaust mechanism, a post-exhaust mechanism and a vacuum extraction mechanism.

[0008] The wall of the sealed box is filled with a phase change heat storage material with a melting point of 70°C to 90°C and a boiling point greater than 200°C. One end of the hot air outlet mechanism penetrates into the sealed box to connect to the hot side channel inlet of the radiator. The transfer pipe is arranged in the sealed box to connect the hot side channel outlet of the radiator to the cold side channel inlet.

[0009] The initial exhaust mechanism comprises an initial exhaust pipe, an initial exhaust valve, a plurality of branch pipes and a plurality of circulating exhaust valves. One end of the initial exhaust pipe is located in the sealed box and is used to connect to the cold side channel outlet of the radiator, and the other end is located outside the sealed box. The initial exhaust valve is installed on the initial exhaust pipe. Each branch pipe located in the sealed box is connected to the pipe section of the initial exhaust pipe located before the initial exhaust valve. One circulating exhaust valve is installed on each branch pipe.

[0010] One end of the rear exhaust mechanism that can be opened and closed is connected to the internal space of the sealed box, and the other end is located outside the sealed box. One end of the vacuum 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 hot side channel inlet of the radiator, the transfer pipe is connected to the hot side channel outlet and the cold side channel inlet of the radiator, and the initial exhaust pipe is connected to the cold side channel outlet of the radiator. 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 turn. On the one hand, most of the residual moisture is blown away by the air flow, and on the other hand, the moisture attached to the surface of the fin that is not easy to blow away is directly evaporated into water vapor under the action of the hot air and carried away by the air flow. In the early stage of drying, due to the high moisture content inside the radiator, the water vapor can be discharged from the initial exhaust pipe. In the middle stage of drying, after the moisture content inside the radiator is significantly reduced, the water vapor can be discharged from the branch pipe, and then discharged from the rear exhaust mechanism after circulating inside the sealed box. In this process, the phase change thermal storage material changes from solid to liquid. At the end of drying, the vacuum can be turned on, the hot air outlet mechanism can be turned off, and the residual heat of the radiator and the heat released during the solidification process of the phase change thermal storage material can be used to dry the radiator. The temperature required for the device to produce hot air is relatively low, which can be 110±10℃. After blowing into the sealed box, the phase change thermal storage material can be melted. The radiator is dried by air drying, thermal evaporation and vacuum drying, as well as by utilizing the solidification heat release of the phase change thermal storage material. Compared with the oven drying method, the drying time performed by the device is short and the energy consumption is low.

[0012] A preferred solution of the radiator drying device is that 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°C can be set to a lower temperature of 110±10°C, which can not only melt the alloy or naphthalene, but also gradually solidify the alloy or naphthalene after the hot air is stopped. The solidification process releases heat and the solidification process is maintained at 80°C, which has a heating effect on the air in the sealed box, so that this stage still has a high drying efficiency. The alloy with a melting point of 80°C can be a tin-bismuth alloy.

[0014] A preferred solution of the radiator drying device is that the sealed box comprises a heat-insulating layer, an outer liner and an inner liner. The heat-insulating layer is sleeved outside the outer liner. The outer liner seamlessly wraps 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 liner and the inner liner form a sealed interlayer, and the phase change thermal storage material is solidified and melted in the interlayer without leaking out. The thermal insulation layer insulates the interlayer and the phase change thermal storage material, saves energy, and improves the utilization rate of the air in the inner cavity of the liner relative to the heat released by the thermal storage material during the transition from liquid to solid.

[0016] A preferred solution of the radiator drying device is that the heat 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, and the phase change heat storage material fills the space between the outer liner and the inner liner.

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

[0018] A preferred solution of the radiator drying device is that the sealed box further comprises a phase change temperature sensor, and the phase change temperature sensor is attached to the outer liner.

[0019] By adopting the above technical solution, when the temperature sensed by the phase change temperature sensor exceeds the melting point of the phase change thermal storage material, it indicates that the phase change thermal storage material has melted, and the next drying stage can be entered.

[0020] A preferred solution of the radiator drying device is that the hot air outlet mechanism includes a fan, an air inlet pipe, an air duct valve, a heating component and an air duct temperature sensor. The fan is arranged outside the sealed box. The inlet end of the air inlet pipe is connected to the fan, and the outlet end is located in the sealed box, which is used to connect to the hot side channel inlet of the radiator. The air duct valve is installed on the air inlet pipe. The heating component is connected to the air inlet pipe. The air duct temperature sensor is installed in the pipe section of the air inlet pipe located after the heating component.

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

[0022] A preferred solution of the radiator drying device is that the hot air outlet mechanism further includes a flow meter, which is installed on the pipe section of the air inlet pipe before the heating assembly.

[0023] By adopting the above technical solution, the flow meter feeds back the flow rate of the output air, so that the fan power can be adjusted to make the air volume reach the target value.

[0024] In a second aspect, the present application also proposes a radiator drying method, and adopts the following technical solution.

[0025] A radiator drying method is performed using the above radiator drying device. The radiator drying method comprises: Assembly stage: install the cleaned radiator to be dried into the sealed box, connect one end of the hot air outlet mechanism located in the sealed box to the hot side channel inlet of the radiator, connect one end of the transfer tube to the hot side channel outlet of the radiator, connect the other end of the transfer tube to the cold side channel inlet of the radiator, and connect one end of the initial exhaust pipe located in the sealed box to the cold side channel outlet of the radiator.

[0026] Initial drying stage: close each of the circulating exhaust valves, the post-exhaust mechanism and the vacuum mechanism, open the initial exhaust valve and the hot air outlet mechanism, and adjust the hot air output by the hot air outlet mechanism to reach 110±10°C. The hot air first blows through the hot side channel of the radiator, then passes through the transfer tube, and then blows through the cold side channel of the radiator, and finally is discharged from the initial exhaust pipe.

[0027] Circulation drying stage: open each of the circulation exhaust valves, close the initial exhaust valve, open the post-exhaust mechanism, and the hot air produced by the hot air outlet mechanism blows through the hot side channel, the transfer pipe, and the cold side channel of the radiator in sequence, and then flows out from the circulation exhaust valve into the sealed box, circulates in the sealed box, and is discharged from the post-exhaust mechanism. The hot air melts the phase change thermal storage material during the circulation process in the sealed box.

[0028] Vacuum drying stage: close the hot air outlet mechanism and the post-exhaust mechanism, open the sealed box, disconnect the hot air outlet mechanism, the transfer tube, the initial exhaust pipe and the radiator, close the sealed box, and open the vacuum mechanism to reduce the air pressure inside the sealed box to dry the radiator.

[0029] By adopting the above technical scheme, in the initial drying stage, due to the high moisture content in the radiator, the gas containing high moisture is discharged out of the sealed box by opening the initial exhaust valve. In the circulating drying stage, the hot air circulates in the box and is discharged out of the sealed box through the rear exhaust mechanism. During the circulation of the hot air in the box, it not only dries the outer surface of the radiator but also heats the surrounding wall structure of the box. When the temperature of the surrounding wall of the box reaches above the melting point of the phase change thermal storage material, the phase change thermal storage material absorbs heat and turns into liquid, thereby achieving the effect of heat storage. In the vacuum drying stage, the pressure in the box gradually decreases, and the boiling point of the unevaporated water in the radiator decreases under low pressure. The radiator is heated by the residual heat of the radiator and the latent heat of the phase change when the phase change thermal storage material solidifies from liquid to solid, 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 to 6 minutes, the circulating drying stage lasts for 8 to 12 minutes, and the vacuum drying stage lasts for 20 to 30 minutes.

[0031] By adopting the above technical solution, most of the water in the radiator can be blown out and dried by hot air in the first 4 to 6 minutes; the radiator surface can be dried and the sealed box wall can be heated in the middle 8 to 12 minutes to melt the phase change thermal storage material and store heat. The last 20 to 30 minutes can completely dry the inside and outside of the radiator through vacuum decompression, radiator residual heat and heat storage of phase change thermal storage materials.

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

[0033] Compared with the conventional oven heating drying method, this method has a lower heating temperature, better temperature uniformity, shorter heating time, and almost no thermal stress damage to the radiator structure. The drying time of this method is about 1 / 3 of the oven drying method, and the energy consumption is reduced by 30%. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a structural schematic diagram of a radiator drying device connected to a radiator.

[0035] Figure 2 A schematic diagram of an operating panel of a radiator drying device.

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

[0037] Figure numerals: 1. sealed box; 2. transfer tube; 3. operation 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. post-process exhaust pipe; 602. post-process exhaust valve; 701. vacuum pump; 702. vacuum tube; 703. vacuum valve. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] like Figure 1 A radiator drying device comprises a sealing box 1, a hot air outlet mechanism, a transfer tube 2, an initial exhaust mechanism, a post-exhaust mechanism and a vacuum mechanism.

[0040] like Figure 2 The radiator drying device further comprises 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 post-exhaust mechanism and the vacuum mechanism.

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

[0042] The structures of the door 11 and the box body 12 are independent of each other, and each has three layers, which are the insulation layer 101, the outer liner 102 and the inner liner 103 from the outside to the inside. The outer liner 102 and the inner liner 103 are seamlessly connected, and the outer liner 102 and the inner liner 103 can be integrally formed to form a closed interlayer, and the outer liner 102 and the inner liner 103 are filled with a phase change thermal storage material 104, and the phase change material preferably fills the space between the outer liner 102 and the inner liner 103. The insulation layer 101 is wrapped outside the outer liner 102. The insulation layer 101 can be a 10mm thick silicon aerogel. The outer liner 102 can be 1mm thick stainless steel. The inner liner 103 can be 3mm thick stainless steel.

[0043] The door 11 and the box body 12 have a mutually separated insulation layer 101, and the door 11 and the box body 12 each have an integrally formed outer liner 102 and inner liner 103. The integrally formed outer liner 102 and inner liner 103 of the door 11 are a square structure as a whole, and the insulation layer 101 of the door 11 is a square structure, which is attached to the outside of the outer liner 102. The space between the outer liner 102 and the inner liner 103 of the door 11 is filled with phase change thermal storage material 104. The integrally formed outer liner 102 and the inner liner 103 of the box body 12 are a square box structure with one side open as a whole, and the insulation layer 101 of the box body 12 is also a square box structure with one side open, and the insulation layer 101 of the box body 12 is attached to the outside of the outer liner 102 of the box body 12. The space between the outer liner 102 and the inner liner 103 of the box body 12 is filled with phase change thermal storage material 104. The door 11 covers the opening of the box body 12, which can seal the internal space and reduce internal heat loss. The melting point of the phase change thermal storage material 104 is 70℃~90℃ and the boiling point is greater than 200℃, such as an alloy with a melting point of 80℃ (boiling point greater than 200℃) or naphthalene (boiling point 217.9℃), which can be melted by hot air with an initial temperature of 110±10℃ and a circulation temperature of about 100℃, but it is not easy to vaporize, and can solidify at a relatively fast speed after the hot air is turned off to release a large amount of heat, and cooperate with the vacuum process to reduce the pressure of the radiator to reduce the boiling point and dry it. In order to fully melt the phase change thermal storage material 104, the device is also provided with a phase change temperature sensor attached to the outer wall of the outer tank 102, and wrapped by the insulation layer 101. If the temperature sensed by the phase change temperature sensor is greater than the melting point of the phase change thermal storage material 104 , it indicates that the phase change thermal storage material 104 has been 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 outlet mechanism includes a fan 201, an air inlet pipe 202, a flow meter 203, an air duct valve 204, a heating component and an air duct temperature sensor 205. The fan 201 is installed outside the sealed box 1, one end of the air inlet pipe 202 is connected to the outlet of the fan 201, and the other end is inserted into the sealed box 1 and connected with a flexible quick-release connector 4 for connecting to the hot side channel inlet of the radiator. The flow meter 203 and the air duct valve 204 are both installed on the pipe section of the air inlet pipe 202 located outside the sealed box 1. The air duct valve 204 can be an electric vacuum butterfly valve. The heating component includes a power supply 206 and an electromagnetic heater 207. The power supply 206 is arranged outside the sealed box 1, and the power supply 206 is connected to the electromagnetic heater 207 by an electric wire. The electromagnetic heater 207 is sleeved on the pipe section of the air duct located in the sealed box 1. The air duct temperature sensor 205 is installed in the pipe section of the air inlet pipe 202 located after the electromagnetic heater 207 to monitor the temperature of the heated air.

[0045] The transfer tube 2 is arranged in the sealing box 1. The transfer tube 2 is a C-shaped tube, and flexible quick-release connectors 4 are installed at both ends thereof, which are respectively used to connect the hot side channel outlet and the cold side channel inlet of the radiator.

[0046] The initial exhaust mechanism includes an initial exhaust pipe 501, an initial exhaust valve 502, two branch pipes 503 and two circulating exhaust valves 504. The initial exhaust pipe 501 passes through the box wall of the sealed box 1, and one end of the initial exhaust pipe 501 located in the sealed box 1 is installed with a flexible quick-release joint 4 for connecting to the cold side channel outlet of the radiator. The initial exhaust valve 502 can be an electric vacuum butterfly valve, which is installed on the pipe section of the initial exhaust pipe 501 located outside the sealed box 1. The two branch pipes 503 are located in the sealed box 1. The two branch pipes 503 are respectively connected to the two sides of the initial exhaust pipe 501. A circulating exhaust valve 504 is installed on each branch pipe 503.

[0047] The post-process exhaust mechanism includes a post-process exhaust pipe 601 and a post-process exhaust valve 602. One end of the post-process exhaust pipe 601 is connected to the inside of the sealed box 1, and the other end is located outside the sealed box 1. The post-process exhaust valve 602 is installed on the pipe section of the post-process exhaust pipe 601 located outside the sealed box 1. The post-process 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 box 1. One end of the vacuum tube 702 is connected to the vacuum pump 701, and the other end is inserted into the sealed box 1. The vacuum valve 703 can be an electric vacuum butterfly valve, which is installed on the pipe section of the vacuum tube 702 located outside the sealed box 1.

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

[0050] The method of drying the radiator using the above radiator drying device includes an assembly stage, an initial drying stage, a circulation drying stage and a vacuum drying stage. The following are the specific steps of each stage.

[0051] Assembly stage: install the cleaned radiator to be dried into the sealed box 1, connect the flexible quick-release joint 4 of the hot air outlet pipe to the hot side channel inlet of the radiator, connect the two ends of the adapter tube 2 equipped with the flexible quick-release joint 4 to the hot side channel outlet and the cold side channel inlet of the radiator respectively, and connect the end of the initial exhaust pipe 501 located in the sealed box 1 equipped with the flexible quick-release joint 4 to the cold side channel outlet of the radiator.

[0052] Initial drying stage: close the two circulating exhaust valves 504, the post-exhaust valve 602 and the vacuum valve 703, open the initial exhaust valve 502, the fan 201, the air duct valve 204 and the power supply 206 of the heating component, the flow meter 203 senses the wind speed produced by the fan 201, the air duct temperature sensor 205 senses the wind temperature after heating by the heating component, the control system obtains the wind speed and wind temperature information, and compares it with the set wind speed and wind temperature. If it does not meet the requirements, the wind speed and wind temperature are adjusted by adjusting the fan 201 speed and the power of the heating component to meet the set requirements. The application adjusts the hot air temperature produced by the hot air mechanism to 110±10℃. Figure 1 The hot air first blows through the hot side channel of the radiator in the left and right directions, then passes through the transfer tube 2, and then blows through the cold side channel of the radiator in the upper and lower directions, and finally is discharged from the initial exhaust pipe 501. The drying method at this stage, on the one hand, uses high-speed airflow to blow away most of the residual moisture in the hot side channel and the cold side channel inside the radiator, and on the other hand, the moisture attached to the surface of the fin that is not easy to blow away is directly evaporated into water vapor under the action of high-temperature air at 110±10℃ and is carried away by the airflow. Within the initial 5 minutes of the operation of the drying device, because there is a lot of moisture in the radiator, the initial exhaust valve 502 is opened in this stage to discharge the gas with a lot of moisture directly out of the box 12 (at this time, the two circulating exhaust valves 504 are in the closed position).

[0053] Circulation drying stage: open each circulation exhaust valve 504, close the initial exhaust valve 502, open the post-exhaust valve 602, keep the temperature of the air produced by the fan 201 after being heated by the heating component at 110±10℃, the hot air blows through the hot side channel of the radiator, the transfer tube 2, and the cold side channel of the radiator in turn, and then is discharged from the two branch pipes 503 to the sealed box 1, and is discharged from the post-exhaust pipe 601 after circulating in the sealed box 1. In 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 tank 102 sensed by the phase change temperature sensor reaches above 80℃, the low melting point phase change thermal storage material 104 in the interlayer of the box 12 structure completely changes into liquid due to the absorption of heat, thereby achieving the effect of heat storage. This stage lasts for 10 minutes.

[0054] Vacuum drying stage: turn off the fan 201, the air duct valve 204, the heating component and the post-exhaust valve 602, open the sealed box 1, disconnect the air duct, the transfer tube 2, the initial exhaust pipe 501 and the radiator, then close the sealed box 1, open the vacuum valve 703, and start the vacuum pump 701. At this time, the pressure in the box 12 gradually decreases, and the boiling point of the unevaporated water in the radiator decreases under low pressure. The radiator is heated by the residual heat of the radiator and the latent heat of phase change released by the phase change heat storage material 104 solidifying from liquid to solid, accelerating the vaporization of water, thereby achieving the purpose of vacuum drying the radiator.

[0055] The solution of the present application uses normal pressure hot air blowing and boiling point evaporation technology to quickly remove most of the water vapor from the radiator. The present application uses vacuum drying technology at medium and low temperatures to completely remove residual moisture inside and on the surface of the hot and cold channels of the radiator. The present application uses liquid metal phase change heat storage technology to recover exhaust waste heat and provide a heat source for vacuum drying. Compared with conventional oven heating and drying methods, the drying temperature of this method is lower, the temperature uniformity is good, the heating time is short, and it almost does not cause thermal stress damage to the radiator structure. The drying time of this method is about 1 / 3 of the oven drying method, and the energy consumption is reduced by 30%.

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

Claims

1. A radiator drying device, characterized in that: It comprises a sealing box (1), a hot air outlet mechanism, a transfer pipe (2), an initial exhaust mechanism, a post-exhaust mechanism and a vacuum extraction mechanism; The wall of the sealed box (1) is filled with a phase change heat storage material (104) having a melting point of 70°C to 90°C and a boiling point greater than 200°C; one end of the hot air outlet mechanism penetrates into the sealed box (1) and is used to connect to the hot side channel inlet of the radiator; the transfer pipe (2) is arranged in the sealed box (1) and is used to connect the hot side channel outlet of the radiator to the cold side channel inlet; The initial exhaust mechanism comprises an initial exhaust pipe (501), an initial exhaust valve (502), a plurality of branch pipes (503) and a plurality of circulating exhaust valves (504); one end of the initial exhaust pipe (501) is located in the sealed box (1) and is used to communicate with 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 sealed box (1) is connected to the pipe section of the initial exhaust pipe (501) located before the initial exhaust valve (502); and one of the circulating exhaust valves (504) is installed on each of the branch pipes (503); One end of the openable and closable rear 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 extraction 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) comprises a thermal insulation layer (101), an outer liner (102) and an inner liner (103); the thermal insulation layer (101) is sleeved outside the outer liner (102); the outer liner (102) seamlessly wraps the inner liner (103); and 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 thermal insulation layer (101) is a silicon aerogel with a thickness of 8 to 12 mm; the outer liner (102) is stainless steel with a thickness of 0.8 to 1.2 mm; the inner liner (103) is stainless steel with a thickness of 2.5 to 3.5 mm; and 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 liner (102).

6. The radiator drying device according to claim 1, characterized in that: The hot air outlet mechanism comprises 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 arranged 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 in the sealed box (1) and is used to communicate with 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); and the air duct temperature sensor (205) is installed in the pipe section of the air inlet pipe (202) located after the heating component.

7. The radiator drying device according to claim 6, characterized in that: The hot air outlet mechanism further comprises a flow meter (203); the flow meter (203) is installed on the pipe section of the air inlet pipe (202) located before the heating component.

8. A radiator drying method, characterized in that: The radiator drying device according to any one of claims 1 to 7 is used for implementation; the radiator drying method comprises: Assembly stage: the cleaned radiator to be dried is placed into the sealed box (1), one end of the hot air outlet mechanism located in the sealed box (1) is connected to the hot side channel inlet of the radiator, one end of the transfer tube (2) is connected to the hot side channel outlet of the radiator, the other end of the transfer tube (2) is connected to the cold side channel inlet of the radiator, and one end of the initial exhaust pipe (501) located in the sealed box (1) is connected to the cold side channel outlet of the radiator; Initial drying stage: close each of the circulating exhaust valves (504), the post-exhaust mechanism and the vacuum mechanism, open the initial exhaust valve (502) and the hot air outlet mechanism, and adjust the hot air output by the hot air outlet mechanism to reach 110±10°C. The hot air first blows through the hot side channel of the radiator, then passes through the transfer tube (2), and then blows through the cold side channel of the radiator, and finally is discharged from the initial exhaust pipe (501); Circulation drying stage: each of the circulation exhaust valves (504) is opened, the initial exhaust valve (502) is closed, and the post-exhaust mechanism is opened. The hot air produced by the hot air outlet mechanism blows through the hot side channel of the radiator, the transfer tube (2), and the cold side channel of the radiator in sequence, and then flows out from the circulation exhaust valve (504) into the sealed box (1). After circulating in the sealed box (1), it is discharged from the post-exhaust mechanism. The hot air melts the phase change thermal storage material (104) during the circulation process in the sealed box (1); Vacuum drying stage: the hot air outlet mechanism and the post-exhaust mechanism are closed, the sealed box (1) is opened, the connection between the hot air outlet mechanism, the transfer tube (2), the initial exhaust pipe (501) and the radiator is disconnected, the sealed box (1) is closed, and the vacuum mechanism is opened to reduce the air pressure inside the sealed 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 to 6 minutes, the circulating drying stage lasts for 8 to 12 minutes, and the vacuum drying stage lasts for 20 to 30 minutes.

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