A weather-proof aging test system with automatic heat recovery
Patent Information
- Application Number
- CN202522375848.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-10
AI Technical Summary
Existing weathering aging test equipment has poor heat dissipation and protection of ultraviolet lamps, resulting in short lifespan, high maintenance costs and high energy consumption.
The ultraviolet lamp is isolated inside the test chamber by a glass sleeve, and heat is transferred into the test chamber through air ducts. Heat is recovered by water ducts, and heat dissipation and waste heat recovery are carried out by fans and heaters.
It effectively extends the lifespan of the UV lamps and reduces system energy consumption and maintenance costs.
Smart Images
Figure CN224933841U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to weathering aging test, and more specifically, to a weathering aging test system with automatic heat recovery. Background Technology
[0002] Weathering aging test equipment simulates natural environmental conditions such as light, temperature, and humidity within a test chamber using UV lamps, air ducts, and water ducts to assess the long-term durability of products and accelerate the verification cycle through accelerated aging testing. Currently, most UV lamps in weathering aging equipment operate in a high-temperature, high-humidity environment within the test chamber, and their poor heat dissipation and protection result in short lifespans. Existing technologies address this issue by either frequently replacing lamps or employing specialized heat dissipation or cooling structures. However, these solutions are either costly to maintain or involve high costs and high energy consumption. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a weathering aging test system that can extend the life of ultraviolet lamps at low cost and reduce system energy consumption, in order to address the above-mentioned deficiencies of the prior art.
[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a weathering aging test system with automatic heat recovery, including: a controller, an aging test chamber, air ducts, water ducts, ultraviolet lamps, and glass sleeves; The controller is used to control the ultraviolet lamp, the air duct, and the water duct to create various aging test environments inside the cavity of the aging test chamber; The ultraviolet lamp is housed in the glass sleeve, which is located inside the cavity of the aging test chamber, thereby isolating the ultraviolet lamp from the test environment inside the cavity of the aging test chamber; the glass sleeve is also located in the air duct, thereby transferring the heat generated by the UV lamp to the cavity of the aging test chamber through the air duct. In the automatic heat recovery weathering test system of this utility model, the air duct includes an air inlet pipe, a first air branch, a second air branch, and an air outlet pipe. A fan is installed in the air intake pipe. The first end of the first air branch is connected to the air intake pipe, and the second end is connected to the interior of the aging test chamber. The glass sleeve is installed in the first air branch. The first end of the second air branch is connected to the air intake pipe, and the second end extends into the cavity of the aging test chamber.
[0005] In the automatic heat recovery weathering aging test system of this utility model, the air inlet pipe is located outside the aging test chamber; The first air branch includes a first section, a second section, and a third section that are interconnected with each other; the first section is connected to the air inlet pipe and is located outside the aging test chamber; the second section is formed by the glass sleeve; the third section is located outside the aging test chamber and is connected to the interior of the cavity of the aging test chamber; a first heater is provided in the third section; a first check valve is provided in the first section. The second air branch includes a fourth section and a fifth section that are connected to each other; the fourth section is located outside the aging test chamber, and the fifth section is inside the aging test chamber; a second check valve and a first flow valve are provided in the fourth section; and a gas nozzle is provided on the fifth section.
[0006] In the automatic heat recovery weathering test system of this utility model, a first safety valve is further provided in the air inlet pipeline; a first shut-off valve and a first flow transmitter are further provided in the fourth section.
[0007] In the automatic heat recovery weathering test system of this utility model, the water pipeline includes an inlet pipeline, an outlet pipeline, a water tank, a main water supply line, a spray branch line, and an atomization branch line. The inlet pipe, the outlet pipe, and the main water supply line are respectively connected to the water tank; the spray branch line and the atomizing branch line are respectively connected to the main water supply line; The spray branch and the atomizing branch extend into the cavity of the aging test chamber; the spray branch is equipped with spray nozzles on the segment inside the cavity of the aging test chamber; the atomizing branch is equipped with atomizing nozzles on the segment inside the cavity.
[0008] In the automatic heat recovery weathering aging test system of this utility model, the water tank includes a tank body and a coil and a stirrer disposed inside the tank body; The chamber contains pure water; the first end of the coil is connected to the drain outlet of the aging test chamber, and the second end is connected to the water outlet pipe; the water inlet pipe is connected to the chamber through the water inlet provided on the chamber.
[0009] In the automatic heat recovery weathering test system of this utility model, the first end of the main water supply line is connected to the box body through the water outlet set on the box body, and the second end is connected to the spray branch line and the atomization branch line respectively. The main water supply line is equipped with a second heater, a water pump, and a second safety valve. A first temperature transmitter and a second temperature transmitter are respectively installed before and after the second heater.
[0010] In the automatic heat recovery weathering aging test system of this utility model, the spray branch includes a first section and a second section that are connected to each other. The first section is connected to the second end of the main water supply line, and the second section extends into the cavity of the aging test chamber. The spray nozzle is installed on the second section. The first section is equipped with a second flow valve, a second shut-off valve, a first pressure reducing valve, a third check valve, and a second flow transmitter.
[0011] In the automatic heat recovery weathering aging test system of this utility model, the atomizing branch includes a third section and a fourth section that are connected to each other. The third section is connected to the second end of the main water supply line, and the fourth section extends into the cavity of the aging test chamber. The atomizing nozzle is installed on the fourth section. The third section is equipped with a third flow valve, a third shut-off valve, a fourth check valve, and a third flow transmitter.
[0012] In the automatic heat recovery weathering aging test system of this utility model, a support frame, a third temperature transmitter and a humidity transmitter are further installed inside the cavity of the aging test chamber. The support frame is used to place the test sample; the ultraviolet lamp, the spray nozzle, and the atomizing nozzle are all positioned directly opposite the support frame.
[0013] The weathering aging test system with automatic heat recovery according to this utility model installs the ultraviolet lamp in a glass sleeve, thereby isolating it from the test environment inside the test chamber and effectively extending the life of the ultraviolet lamp. At the same time, the glass sleeve is set in the air duct, so that the heat generated by the ultraviolet lamp can be transferred to the interior of the test chamber through the air duct. Therefore, the heat generated by the ultraviolet lamp can be recovered and utilized while the ultraviolet lamp is being dissipated using the air duct, thus reducing system energy consumption and reducing costs. Attached Figure Description
[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a schematic diagram of a preferred embodiment of the weathering aging test system with automatic heat recovery according to this utility model; Figure 2 This is a schematic diagram of another preferred embodiment of the automatic heat recovery weathering aging test system of this utility model.
[0015] In the diagram: 1 is the controller; 2 is the aging test chamber; 3 is the glass sleeve; 4 is the ultraviolet lamp; 5 is the spray nozzle; 6 is the atomizing nozzle; 7 is the fan; 8 is the first safety valve; 9 is the first check valve; 10 is the first heater; 11 is the first flow transmitter; 12 is the pressure reducing valve; 13 is the second flow valve; 14 is the second shut-off valve; 15 is the third temperature transmitter; 16 is the third flow valve; 17 is the third shut-off valve; 18 is the humidity transmitter; 19 is the second check valve; 20 is the first shut-off valve; 21 is the first flow valve; 22 is the fourth check valve; 23 is the third check valve; 24 is the third flow... 25 is a second flow transmitter; 26 is a drain outlet; 27 is a second temperature transmitter; 28 is a first temperature transmitter; 29 is a second safety valve; 30 is a water pump; 31 is a second heater; 32 is a gas nozzle; 34 is a coil; 35 is a stirrer; 36 is a support frame; 37 is a sample; 50 is an air duct; 51 is an air inlet pipe; 52 is a first air branch; 53 is a second air branch; 54 is an air outlet pipe; 60 is a water duct; 61 is a water inlet pipe; 62 is a water outlet pipe; 63 is a water tank; 64 is a main water supply line; 65 is a spray branch; 66 is an atomizing branch. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0017] Figure 1 This is a schematic diagram of a preferred embodiment of the weathering aging test system with automatic heat recovery according to this utility model. Figure 1 As shown, the automatic heat recovery weathering aging test system includes: a controller 1, an aging test chamber 2, an air duct 50, a water duct 60, and an ultraviolet lamp 4. The controller 1 controls the ultraviolet lamp 4, the air duct 50, and the water duct 60 to create various test environments inside the cavity of the aging test chamber 2. Here, any method known in the art can be used to control the flow valves, heaters, nozzles, and valves located in the air duct 50 and the water duct 60 to provide various temperature, humidity, and pressure conditions, thereby creating various test environments inside the cavity of the aging test chamber 2. The ultraviolet lamp 4 is disposed inside the cavity of the aging test chamber 2 and installed in a glass sleeve 3, thereby isolating it from the test environment inside the cavity of the aging test chamber 2. The glass sleeve 3 is disposed in the air duct 50, thereby transferring the heat generated by the ultraviolet lamp 4 to the cavity of the aging test chamber 2 through the air duct 50.
[0018] The weathering aging test system of this utility model installs the ultraviolet lamp in a glass sleeve, thereby isolating it from the test environment inside the aging test chamber, which can effectively extend the life of the ultraviolet lamp. At the same time, the glass sleeve is set in the air duct, so that the heat generated by the ultraviolet lamp can be transferred to the inside of the aging test chamber through the air duct. Therefore, the heat generated by the ultraviolet lamp can be recovered and utilized while the ultraviolet lamp is being dissipated using the air duct, thus reducing the system energy consumption.
[0019] Figure 2 This is a schematic diagram of another preferred embodiment of the weathering aging test system of this utility model. Figure 2 In the diagram, dashed lines represent control loops. For example... Figure 2 As shown, the weathering aging test system includes: a controller 1, an aging test chamber 2, an air duct 50, a water duct 60, and an ultraviolet lamp 4. The controller 1 controls the ultraviolet lamp 4, the air duct 50, and the water duct 60 to create various test environments inside the cavity of the aging test chamber 2. The ultraviolet lamp 4 is located inside the cavity of the aging test chamber 2 and installed in a glass sleeve 3, thereby isolating it from the test environment inside the cavity of the aging test chamber 2. The glass sleeve 3 is located in the air duct 50, thereby transferring the heat generated by the ultraviolet lamp 4 to the cavity of the aging test chamber 2 through the air duct 50.
[0020] Further as Figure 2 As shown, the air duct 50 includes an air inlet duct 51, a first air branch 52, a second air branch 53, and an air outlet duct 54. A fan 7 and a first safety valve 8 are installed in the air inlet duct 51. The first end of the first air branch 52 is connected to the air inlet duct 51, and the second end is connected to the interior of the aging test chamber 2; the glass sleeve 3 is disposed in the first air branch 52. The first end of the second air branch 53 is connected to the air inlet duct 51, and the second end extends into the interior of the aging test chamber 2. The air inlet duct 51 is located outside the aging test chamber 2.
[0021] Further as Figure 2As shown, the first air branch 52 includes a first section, a second section, and a third section that are interconnected. The first section is connected to the air inlet pipe 51 and is located outside the aging test chamber 2. The second section is formed by the glass sleeve 3. The third section is located outside the aging test chamber 2 and is connected to the interior of the cavity of the aging test chamber 2. A first heater 10 is installed in the third section. A first check valve 9 is installed in the first section. The second air branch 53 includes a fourth section and a fifth section that are interconnected. The fourth section is located outside the aging test chamber 2, and the fifth section is located inside the aging test chamber 2. A second check valve 19 and a first flow valve 21 are installed in the fourth section. A gas nozzle 32 is installed on the fifth section. A first shut-off valve 20 and a first flow transmitter 11 are further installed in the fourth section.
[0022] The water supply system 60 includes an inlet pipe 61, an outlet pipe 62, a water tank 63, a main water supply line 64, a spray branch line 65, and an atomizing branch line 66. The inlet pipe 61, the outlet pipe 62, and the main water supply line 64 are all connected to the water tank 63. The spray branch line 65 and the atomizing branch line 66 are all connected to the main water supply line 64. The spray branch line 65 and the atomizing branch line 66 extend into the cavity of the aging test chamber 2. Spray nozzles 5 are installed on the section of the spray branch line 65 located inside the cavity of the aging test chamber 2. Atomizing nozzles 6 are installed on the section of the atomizing branch line 66 located inside the cavity. The water tank 63 includes a tank body, a coil 34 and a stirrer 35 disposed inside the tank body; the tank body stores pure water; the first end of the coil 34 is connected to the drain outlet 26 of the aging test chamber 2, and the second end is connected to the water outlet pipe 62; the water inlet pipe 61 is connected to the tank body through a water inlet disposed on the tank body. The first end of the main water supply line 64 is connected to the tank body through a water outlet disposed on the tank body, and the second end is connected to the spray branch line 65 and the atomizing branch line 66 respectively; the main water supply line 64 is provided with a second heater 31, a water pump 30 and a second safety valve 29, and a first temperature transmitter 28 and a second temperature transmitter 27 are respectively disposed before and after the second heater 31. The spray branch 65 includes a first section and a second section that are interconnected. The first section is connected to the second end of the main water supply line 64, and the second section extends into the cavity of the aging test chamber 2. The spray nozzle 5 is installed on the second section. A second flow valve 13, a second shut-off valve 14, a first pressure reducing valve 12, a third check valve 23, and a second flow transmitter 25 are installed in the first section. The atomizing branch 66 includes a third section and a fourth section that are interconnected. The third section is connected to the second end of the main water supply line 64, and the fourth section extends into the cavity of the aging test chamber 2. The atomizing nozzle 6 is installed on the fourth section. A third flow valve 16, a third shut-off valve 17, a fourth check valve 22, and a third flow transmitter 24 are installed in the third section.
[0023] The aging test chamber 2 is further equipped with a support frame 6, a third temperature transmitter 15, and a humidity transmitter 18; the support frame 6 is used to place the test sample; the ultraviolet lamp 4, the spray nozzle 5, and the atomizing nozzle 6 are all positioned directly opposite the support frame 6.
[0024] The following will combine Figure 2The principle and usage of this utility model are explained below. The weathering aging test system of this utility model includes: a controller 1, an aging test chamber 2, an air duct 50, a water duct 60, and an ultraviolet lamp 4. The controller 1 is used to control the ultraviolet lamp 4, the air duct 50, and the water duct 60 to create various test environments inside the cavity of the aging test chamber 2, thereby subjecting the samples to weathering aging cycle tests according to Table 4 of GB / T16422.3.
[0025] The aging test chamber 2 contains a glass sleeve 3, a spray nozzle 5, an atomizing nozzle 6, and a gas nozzle 32. The spray nozzle 5, atomizing nozzle 6, and gas nozzle 32 are respectively installed on corresponding sections of the air duct 50 and water duct 60. The sample 37 is placed on the support frame 36, and the ultraviolet lamp 4 is placed in the glass sleeve 3 inside the aging test chamber 2. The glass sleeve is preferably made of fused silica glass with high transmittance to 340nm ultraviolet light.
[0026] The fan 7 delivers air into the air inlet pipe 51 of the air duct 50. The first air branch 52 connects to the glass sleeve 3 inside the aging test chamber 2, carrying away the heat generated by the ultraviolet lamp 4. The air and heat are then transferred through the first air branch 52 to the first heater 10 for further heating, and then returned to the cavity of the aging test chamber 2 via the first air branch 52. The second air branch 53 blows room-temperature air from the gas nozzle 32 onto the surface of the sample 37, maintaining a certain temperature difference between the sample surface temperature and the air temperature inside the aging test chamber during the condensation test phase of the weathering aging cycle.
[0027] The air duct 50 is equipped with a first safety valve 8, a first check valve 9, and a second check valve 19 to ensure the safety of the air duct 50 and the stable delivery of air. The aging test chamber 2 is equipped with a first temperature transmitter 15, which collects air temperature data from inside the aging test chamber and transmits this data to the controller 1. The controller 1 controls the power of the first heater 10 according to the stored timing sequence to maintain the specific temperature environment required for the test. When the controller 1 executes the condensation test program segment of the weathering aging cycle, it monitors the flow data of the second air branch of the first flow transmitter 11 and regulates the flow on / off and magnitude of the second air branch through the first shut-off valve 20 and the first flow valve 21, so that the surface temperature of the sample 37 maintains a certain temperature difference with the air temperature inside the aging test chamber 2 during the condensation test stage of the weathering aging cycle, thus achieving the condensation condition. Here, control processes known in the art can be used, and will not be elaborated further.
[0028] The water tank 33 stores pure water, which, after being heated by the second heater 31, is pumped to either the spray branch 65 or the atomization branch 66 to provide spray water and atomized water vapor to the aging test chamber during the spraying and condensation stages of the weathering aging cycle, respectively. The atomizing nozzle 6 is a fine mist nozzle. The water pump 30 is a plunger pump, providing relatively high-pressure pure water to supply water vapor with small particle sizes to the aging test chamber 2. This increases the humidity and dew point temperature in the condensation test stage of the weathering aging cycle, thus achieving condensation on the surface of the sample 37. The spray branch 65 does not require a high-pressure water source; the pressure is reduced to a certain range by the pressure reducing valve 12, providing spray water to the aging test chamber 2 during the spraying test stage of the weathering aging cycle. Although the spraying test stage does not impose specific requirements on the ambient temperature inside the aging test chamber 2 during the weathering aging cycle, maintaining a constant ambient temperature during the spraying test stage is beneficial for the subsequent condensation test stage and minimizes unnecessary energy loss. During the condensation test phase of the weathering aging cycle, a certain temperature difference must be maintained between the air temperature inside the aging test chamber 2 and the solid temperature on the surface of sample 37. The humidity inside the aging test chamber 2 also needs to be increased to a specific range to ensure that condensation occurs on the surface of sample 37. Therefore, the water source temperature of the atomizing branch 66 must be consistent with the air temperature inside the aging test chamber 2. Thus, a second heater 31 is installed in the water pipe to control the water source temperature to match the air temperature inside the aging test chamber 2. The high-temperature accumulated water inside the aging test chamber 2 flows out through the drain outlet 26 at the bottom of the aging test chamber and into the coil 34 at the bottom of the water tank 33. The coil 34 recovers the heat from the high-temperature return water into the pure water stored in the water tank to reduce the energy consumption of the second heater 31. Since the return water after heat exchange is contaminated by the sample inside the aging test chamber 2, it flows directly out of the system from the coil 34. Water needs to be replenished promptly when the pure water level in the water tank 33 drops. When the controller 1 executes the spray test and condensation test program segments of the weathering aging cycle, it monitors the water temperature data of the third temperature transmitter 27 and the second temperature transmitter 28, controls the power of the second heater 31, and controls the flow on / off and magnitude of the spray branch 65 and the atomization branch 66 through the second shut-off valve 14, the third shut-off valve 17, the second flow valve 13 and the third flow valve 16 respectively, to execute the spraying condition and condensation condition of the weathering aging test.
[0029] The controller can collect temperature and humidity data and flow data of each pipeline branch in the aging test chamber through the signal control loop, input them to the programmable controller, and control the on / off state of each pipeline, flow rate and heater power according to the timing sequence of the program segment to perform three working conditions of weathering aging test: UV irradiation, spraying and condensation.
[0030] The piping structure of the weathering aging test control system of this utility model can be expanded according to the size requirements of the test sample, increasing the cavity size of the aging test chamber. The system can be configured with the corresponding lamp power and quantity, heater power, and fan and water pump models based on the cavity size. When conducting aging tests on medium to large-sized samples or assembled products, no additional sample preparation is required, accelerating the testing efficiency and verifying the thermal expansion and contraction performance of the assembled product's parts after weathering aging cycles. The glass sleeve provides an independent heat dissipation channel for the UV lamp and isolates it from the complex and variable drying, spraying, and condensation environment within the aging test chamber, extending the UV lamp's working life. While isolating and protecting the UV lamp, the weathering aging test control system directly recovers the low-grade heat energy generated by the UV lamp and transfers it to the aging test chamber to maintain a constant temperature environment. The high-temperature water effluent from the aging test chamber is also directly recovered and transferred to the water tank to maintain the liquid temperature, reducing the overall energy consumption of the system.
[0031] This invention addresses the problems of the existing technology by providing a weathering aging test control system with lamp heat dissipation and waste heat recovery. For weathering aging equipment with a large test space, while isolating and protecting the UV lamps from heat dissipation, the low-grade heat energy generated by the UV lamps is directly recovered and transferred to the aging test chamber to maintain a constant temperature environment inside the aging test chamber. In addition, the high-temperature water in the aging test chamber is also directly recovered and transferred to the water tank to maintain the liquid temperature, which not only extends the working life of the UV lamps but also reduces the overall energy consumption of the system.
[0032] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.
[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A weathering aging test system with automatic heat recovery, characterized in that, include: Controller, aging test chamber, air duct, water duct, UV lamp, and glass sleeve; The controller is used to control the ultraviolet lamp, the air duct, and the water duct to create an aging test environment inside the cavity of the aging test chamber; The ultraviolet lamp is disposed in the glass sleeve, which is located inside the cavity of the aging test chamber, thereby isolating the ultraviolet lamp from the test environment inside the cavity of the aging test chamber; the glass sleeve is disposed in the air duct, thereby transferring the heat generated by the ultraviolet lamp to the cavity of the aging test chamber through the air duct.
2. The weathering aging test system with automatic heat recovery according to claim 1, characterized in that, The air duct includes an air inlet duct, a first air branch, a second air branch, and an air outlet duct; A fan is installed in the air intake pipe. The first end of the first air branch is connected to the air intake pipe, and the second end is connected to the interior of the aging test chamber. The glass sleeve is installed in the first air branch. The first end of the second air branch is connected to the air intake pipe, and the second end extends into the cavity of the aging test chamber.
3. The weathering aging test system with automatic heat recovery according to claim 2, characterized in that, The air intake pipe is located outside the aging test chamber; The first air branch includes a first section, a second section, and a third section that are interconnected with each other; the first section is connected to the air inlet pipe and is located outside the aging test chamber; the second section is formed by the glass sleeve; the third section is located outside the aging test chamber and is connected to the interior of the cavity of the aging test chamber; a first heater is provided in the third section; a first check valve is provided in the first section. The second air branch includes a fourth section and a fifth section that are connected to each other; the fourth section is located outside the aging test chamber, and the fifth section is inside the aging test chamber; a second check valve and a first flow valve are provided in the fourth section; and a gas nozzle is provided on the fifth section.
4. The weathering aging test system with automatic heat recovery according to claim 3, characterized in that, A first safety valve is further provided in the air intake pipeline; a first shut-off valve and a first flow transmitter are further provided in the fourth section.
5. The weathering aging test system with automatic heat recovery according to any one of claims 1 to 4, characterized in that, The water pipeline includes an inlet pipeline, an outlet pipeline, a water tank, a main water supply line, a spray branch line, and an atomizing branch line; The inlet pipe, the outlet pipe, and the main water supply line are respectively connected to the water tank; the spray branch line and the atomizing branch line are respectively connected to the main water supply line; The spray branch and the atomizing branch extend into the cavity of the aging test chamber; the spray branch is equipped with spray nozzles on the segment inside the cavity of the aging test chamber; the atomizing branch is equipped with atomizing nozzles on the segment inside the cavity.
6. The weathering aging test system with automatic heat recovery according to claim 5, characterized in that, The water tank includes a tank body and a coil and a stirrer disposed inside the tank body; The chamber contains pure water; the first end of the coil is connected to the drain outlet of the aging test chamber, and the second end is connected to the water outlet pipe; the water inlet pipe is connected to the chamber through the water inlet provided on the chamber.
7. The weathering aging test system with automatic heat recovery according to claim 6, characterized in that, The first end of the main water supply line is connected to the box body through a water outlet provided on the box body, and the second end is connected to the spray branch line and the atomizing branch line respectively. The main water supply line is equipped with a second heater, a water pump, and a second safety valve. A first temperature transmitter and a second temperature transmitter are respectively installed before and after the second heater.
8. The weathering aging test system with automatic heat recovery according to claim 6, characterized in that, The spray branch includes a first section and a second section that are connected to each other. The first section is connected to the second end of the main water supply line, and the second section extends into the cavity of the aging test chamber. The spray nozzles are installed on the second section. The first section is equipped with a second flow valve, a second shut-off valve, a first pressure reducing valve, a third check valve, and a second flow transmitter.
9. The weathering aging test system with automatic heat recovery according to claim 6, characterized in that, The atomizing branch includes a third section and a fourth section that are connected to each other. The third section is connected to the second end of the main water supply line, and the fourth section extends into the cavity of the aging test chamber. The atomizing nozzle is installed on the fourth section. The third section is equipped with a third flow valve, a third shut-off valve, a fourth check valve, and a third flow transmitter.
10. The weathering aging test system with automatic heat recovery according to claim 6, characterized in that, The aging test chamber is further equipped with a support frame, a third temperature transmitter, and a humidity transmitter. The support frame is used to place the test sample; the ultraviolet lamp, the spray nozzle, and the atomizing nozzle are all positioned directly opposite the support frame.