A high-low temperature damp heat test chamber with rapid temperature rising and falling

Abstract

This invention relates to the field of test chamber technology, specifically to a high and low temperature humidity test chamber with rapid temperature rise and fall, comprising a test chamber body, the interior of which is provided with an inner layer partition of the test chamber. The beneficial effects are as follows: an H-shaped air duct forms a double-sided and rear-side air outlet on the outer side of the inner layer partition of the test chamber. Adjusted by an air duct regulating plate, in the heating state, air enters from both sides and is heated by the heating pipes before being discharged through the hot air outlet slot to heat the inner layer partition of the test chamber. In the cooling state, air directly enters the middle of the H-shaped air duct, where the liquid nitrogen circulation cooling component generates cold air, which is discharged through a U-shaped cold air duct for cooling. The U-shaped cold air duct is designed with an adjustable baffle to guide the airflow inside, allowing dry air to flow obliquely upwards through the baffle before cooling. A portion of the air is discharged through the dry air outlet slot, drying the side walls of the inner layer partition of the test chamber and accelerating the drying process.

Description

Technical Field

[0001] This invention relates to the field of test chamber technology, specifically a high and low temperature humidity test chamber with rapid temperature rise and fall. Background Technology

[0002] Rapid temperature and humidity test chambers, also known as environmental test chambers, constant humidity test chambers, humidity alternation test chambers, or programmable constant temperature and humidity test chambers, can accurately simulate complex natural environments such as low temperature, high temperature, high temperature and high humidity, and low temperature and low humidity. They are used to test the performance of materials under various environments and to test the heat resistance, cold resistance, dryness resistance, and humidity resistance of various materials. They are suitable for quality testing of products in electronics, electrical appliances, communications, instruments, vehicles, plastic products, metals, food, chemicals, building materials, medical, aerospace, and other industries. When the internal temperature of a typical high and low temperature humidity test chamber changes, a certain amount of condensation is generated. This water remains in the test chamber and is reheated with each temperature change. Repeatedly heating this water leads to energy waste.

[0003] The existing Chinese patent document with publication number CN218459539U proposes a high and low temperature humidity test chamber with rapid temperature rise and fall. It solves the above problem by having a micro motor drive a lead screw to rotate when the temperature of the test chamber body drops, thereby raising the L-shaped lifting plate and ensuring that the water droplets condensed by water vapor can flow into the water tank. However, the drainage speed of the mechanism of the micro motor driving the lead screw to rotate and raise the L-shaped plate is slow and cannot guarantee that the water can be completely drained.

[0004] Therefore, this invention proposes a high and low temperature humidity test chamber with rapid temperature rise and fall, which solves the problem of slow discharge of condensed water droplets in the existing high and low temperature humidity test chamber. It adopts a decentralized design of the air duct and adds dry air to quickly dry the side wall of the test chamber, avoiding water vapor condensation and secondary heating as the temperature changes. Summary of the Invention

[0005] The purpose of this invention is to provide a high and low temperature humidity test chamber with rapid temperature rise and fall, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: It includes an experimental chamber body, the interior of which is provided with an inner partition for the experimental chamber, an H-shaped air duct is provided on the outer side of the inner partition for the experimental chamber, a U-shaped cold air duct is provided on the inner side of the inner partition for the experimental chamber, heating pipes are symmetrically arranged on both sides of the H-shaped air duct, and an air intake fan and a liquid nitrogen circulation cooling assembly are provided at one end of the H-shaped air duct.

[0007] Preferably, hot air outlet slots are symmetrically provided on both sides of the inner wall of the inner partition of the experimental chamber, a temperature sensor and a humidity sensor are fixedly installed above the inner surface of the inner partition of the experimental chamber, and an experimental display rack is slidably installed below the U-shaped cold air duct.

[0008] Preferably, the U-shaped cold air duct is fixedly installed on the inner wall of the inner partition of the experimental chamber, the inner side wall of the U-shaped cold air duct is provided with a cold air cooling outlet groove, and the upper side wall of the U-shaped cold air duct is symmetrically fixedly installed with a dry air blowing outlet groove.

[0009] Preferably, the U-shaped cold air duct is symmetrically and rotatably installed with adjusting baffles on both sides inside, and an adjusting gear is fixedly installed at one end of the rotating shaft of the adjusting baffle. An adjusting gate-shaped rack is slidably installed on the inner surface of the inner layer partition of the experimental chamber.

[0010] Preferably, a motor is fixedly installed on the outer wall of the inner partition of the experimental chamber, and a drive gear is fixedly installed on the output shaft of the motor. The outer surfaces of the drive gear and the adjusting gear respectively mesh with the outer surfaces of the adjusting gate rack.

[0011] Preferably, the heating tube is fixedly installed on the top of the experimental chamber body, and a heat-concentrating half-cover is provided on the outside of the heating tube. The heat-concentrating half-cover is rotatably installed inside the H-shaped air duct, and a gear is fixedly installed at the bottom of the rotating shaft of the heat-concentrating half-cover.

[0012] Preferably, duct adjustment plates are symmetrically and rotatably installed on both sides of the middle of the H-shaped duct. A second gear is fixedly installed at the bottom of the rotating shaft of the duct adjustment plate. The second gear is movably connected to the first gear by a chain. A second motor for driving the duct adjustment plates to rotate is symmetrically and fixedly installed on the top of the experimental chamber body.

[0013] Preferably, an air intake fan is fixedly installed on the outer wall of the H-shaped air duct, a liquid nitrogen circulation refrigeration component is provided on the outer side of the H-shaped air duct, and the heat exchange tube of the liquid nitrogen circulation refrigeration component is fixedly installed in the middle of the inner side of the H-shaped air duct.

[0014] Preferably, an exhaust hood is fixedly installed at the bottom of the main body of the experimental chamber, an exhaust fan is fixedly installed inside the exhaust hood, an exhaust pipe is fixedly installed at the input air duct end of the exhaust fan, and the exhaust pipe is located above the bottom of the inner partition of the experimental chamber.

[0015] Preferably, a misting humidifier is fixedly installed on the top of the main body of the experimental chamber, a misting nozzle is fixedly installed on the top of the inner surface of the main body of the experimental chamber, the output pipe of the misting humidifier is fixedly connected to the inner wall of the misting nozzle, a water storage tank is fixedly installed on the side wall of the main body of the experimental chamber, and the input pipe of the misting humidifier is fixedly connected to the output pipe of the water storage tank.

[0016] Compared with the prior art, the beneficial effects of the present invention are: The H-shaped air duct proposed in this invention forms a double-sided and rear-side air outlet on the outer side of the inner partition of the experimental chamber. Adjusted by an air duct regulating plate, in the heating state, air enters from both sides and is heated by the heating pipes before being discharged through the hot air outlet slot to heat the inner partition of the experimental chamber. In the cooling state, air directly enters the middle of the H-shaped air duct, where the liquid nitrogen circulation cooling component generates cold air, which is discharged through a U-shaped cold air duct for cooling. The U-shaped cold air duct is designed with an adjustable baffle to guide the airflow inside, allowing dry air to flow obliquely upwards before cooling. A portion of the air is blown out through the dry air outlet slot, drying the sidewalls of the inner partition of the experimental chamber. This accelerates the drying of the sidewalls and prevents water vapor condensation from requiring secondary heating during temperature changes, thus solving the problem of slow condensation removal in existing high and low temperature humidity test chambers. Attached Figure Description Figure 1 This is a schematic diagram of the overall front structure of the present invention; Figure 2 This is a schematic diagram of the overall rear structure of the present invention; Figure 3 This is a schematic diagram of the main body of the experimental box of the present invention when opened; Figure 4 This is a schematic diagram of the internal structure of the main body of the experimental box of the present invention; Figure 5 This is a schematic diagram of the internal structure of the rear side of the main body of the experimental box of the present invention; Figure 6 This is a top view of the internal structure of the experimental chamber of the present invention in a refrigerated state; Figure 7 This is a top view of the internal structure of the experimental chamber of the present invention under heating conditions; Figure 8 This is a schematic diagram of the outer structure of the inner layer partition of the experimental cavity of the present invention; Figure 9 This is a schematic diagram of the rear side structure of the inner layer partition of the experimental cavity of the present invention; Figure 10 This is a schematic diagram of the U-shaped cooling duct arrangement structure of the present invention; Figure 11 This is a schematic diagram of the overall structure of the U-shaped cooling duct of the present invention; Figure 12 This is a top view of the internal structure of the U-shaped cooling duct of the present invention; Figure 13 This is a schematic cross-sectional view of the U-shaped cooling duct of the present invention under cooling air conditions. Figure 14 This is a schematic cross-sectional view of the U-shaped cooling duct of the present invention under dry air purging conditions.

[0017] In the diagram: 1. Main body of the experimental chamber; 2. Inner partition of the experimental chamber; 21. U-shaped cold air duct; 211. Cold air cooling outlet duct; 212. Dry air blowing outlet duct; 213. Adjusting baffle; 214. Adjusting gear; 22. Experimental specimen display rack; 23. Adjusting gate-shaped rack; 24. Motor 1; 241. Drive gear; 25. Hot air outlet duct; 26. Temperature sensor; 27. Humidity sensor; 3. H-shaped air duct; 31. Heating tube; 311. Heat-concentrating half-cover; 312. Gear 1; 32. Air intake fan; 33. Liquid nitrogen circulation cooling assembly; 34. Air duct adjustment plate; 341. Gear 2; 35. Motor 2; 4. Exhaust hood; 41. Exhaust fan; 42. Exhaust duct; 5. Atomizing humidification equipment; 51. Water storage tank; 52. Atomizing nozzle. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figures 1-14 This invention provides a technical solution: It includes an experimental chamber body 1, with an inner partition 2 for the experimental chamber inside the body 1. An H-shaped air duct 3 is arranged on the outer side of the inner partition 2, and a U-shaped cold air duct 21 is arranged on the inner side of the inner partition 2. Heating pipes 31 are symmetrically arranged on both sides of the H-shaped air duct 3. An air inlet fan 32 and a liquid nitrogen circulation cooling assembly 33 are arranged at one end of the H-shaped air duct 3. Hot air outlet slots 25 are symmetrically opened on the inner walls of both sides of the inner partition 2. A temperature sensor 26 and a humidity sensor 27 are fixedly installed above the inner surface of the inner partition 2. An experimental sample display rack 22 is slidably installed below the U-shaped cold air duct 21. The U-shaped cold air duct 21 is fixedly installed in the experimental chamber. On the inner wall of the inner partition 2 of the experimental chamber, a cooling air outlet 211 is provided on the inner side wall of the U-shaped cold air duct 21. A dry air blowing outlet 212 is symmetrically fixedly installed on the upper side wall of the U-shaped cold air duct 21. An adjusting baffle 213 is symmetrically rotatably installed on both sides of the inside of the U-shaped cold air duct 21. An adjusting gear 214 is fixedly installed at one end of the rotating shaft of the adjusting baffle 213. An adjusting gate-shaped rack 23 is slidably installed on the inner surface of the inner partition 2 of the experimental chamber. A motor 24 is fixedly installed on the outer wall of the inner partition 2 of the experimental chamber. A drive gear 241 is fixedly installed on the output shaft of the motor 24. The outer surfaces of the drive gear 241 and the adjusting gear 214 respectively mesh with the outer surfaces of the adjusting gate-shaped rack 23. In this embodiment, the H-shaped air duct 3, located on the outer side of the inner partition 2 of the experimental chamber, forms an air duct with air outlets on both sides and the rear side. The heating pipe 31 is located on the outer side of the hot air outlet slot 25 and operates when air passes through the outlets on both sides to heat the interior of the inner partition 2 of the experimental chamber, completing the high-temperature test. The U-shaped cold air duct 21 penetrates the rear wall of the inner partition 2 of the experimental chamber. The liquid nitrogen circulation cooling assembly 33 operates to cool the air, and the U-shaped cold air duct 21 directs the cold air out. The air is then guided downwards by the baffle 213 and discharged through the cold air cooling outlet slot 211. The experimental materials are displayed on the experimental display shelf 22. The cold air cooling outlet slot 211 is angled downwards to allow cold air to blow on the materials for low-temperature testing. When cooling down from a high temperature, motor 24 can be started, which drives the drive gear 241 to rotate, thereby causing the adjusting gate rack 23 to move upward. This causes the adjusting gears 214 on both sides of the U-shaped cold air duct 21 to flip outward simultaneously, so that the adjusting baffle 213 is inclined upward to guide the cold air. The cold air can be discharged through the dry air blowing outlet 212 and the cold air cooling outlet 211. The upward-sloping design of the dry air blowing outlet 212 allows the cold air to blow obliquely onto the side wall of the inner layer partition 2 of the experimental chamber. The narrow spacing of the dry air blowing outlet 212 extends the air outlet range and increases the wind speed to accelerate the dry air blowing and drying of the side wall of the inner layer partition 2 of the experimental chamber, avoiding water vapor condensation and secondary heating as the temperature changes.

[0020] Example 2 Based on Embodiment 1, the heating tube 31 is fixedly installed on the top of the experimental chamber body 1. A heat-gathering half-cover 311 is provided on the outside of the heating tube 31. The heat-gathering half-cover 311 is rotatably installed inside the H-shaped air duct 3. A gear 312 is fixedly installed at the bottom of the rotating shaft of the heat-gathering half-cover 311. Air duct adjustment plates 34 are symmetrically rotatably installed on both sides of the middle of the H-shaped air duct 3. A gear 341 is fixedly installed at the bottom of the rotating shaft of the air duct adjustment plate 34. The gear 341 and the gear 312 are movably connected by a chain. A motor 35 for driving the air duct adjustment plate 34 to rotate is symmetrically fixedly installed on the top of the experimental chamber body 1. An air intake fan 32 is fixedly installed on the outer wall of the H-shaped air duct 3. A liquid nitrogen circulation cooling component 33 is provided on the outside of the H-shaped air duct 3. The heat exchange tube of the liquid nitrogen circulation cooling component 33 is fixedly installed in the middle of the inner side of the H-shaped air duct 3. In this embodiment, the heating tube 31 is located outside the hot air outlet slot 25 for heating. The heat-concentrating half-cover 311 partially surrounds the outside of the heating tube 31. When the inner partition 2 of the experimental chamber is heated, the air duct regulating plate 34 is symmetrically distributed in an "eight" shape inside the H-shaped air duct 3, blocking the middle area of ​​the H-shaped air duct 3. The air generated by the air intake fan 32 is guided by the air duct regulating plate 34 into both sides of the H-shaped air duct 3, and discharged through the hot air outlet slot 25 after being heated by the heating tube 31. At this time, the heat-concentrating half-cover 311 surrounds the side of the heating tube 31 away from the hot air outlet slot 25, generating a certain concentrating effect on the incoming air, causing its temperature to rise rapidly and form hot air. When the inner partition 2 of the experimental chamber needs to be cooled, the motor 35 drives the air duct regulating plate 34 to rotate 180°, so that the air duct regulating plate 34 is inverted inside the H-shaped air duct 3. The "eight"-shaped symmetrical oblique distribution blocks the areas on both sides of the H-shaped air duct 3. The air generated by the air intake fan 32 is guided by the air duct regulating plate 34 into the middle area of ​​the H-shaped air duct 3. The liquid nitrogen circulation cooling component 33 works to quickly cool and generate cold air, which is discharged through the U-shaped cold air pipe 21, realizing the separation of hot and cold air and avoiding mutual interference between the cooling and heating components. Moreover, because the gear 2 341 at the bottom of the air duct regulating plate 34 and the gear 1 312 at the bottom of the heat-gathering half-cover 311 are linked by a chain, the heat-gathering half-cover 311 will also rotate 180° at this time, surrounding the inside of the heating tube 31 and sealing the hot air outlet slot 25. The heat-gathering half-cover 311 is arc-shaped to prevent water droplets from condensing on the surface of the heating tube 31. With the help of the cold air drying, the outside of the inner layer partition 2 of the experimental chamber will dry quickly. At the same time, the residual heat of the heating tube 31 inside the heat-gathering half-cover 311 also plays a role in drying.

[0021] Example 3 Based on Embodiment 2, an exhaust hood 4 is fixedly installed at the bottom of the main body 1 of the experimental chamber. An exhaust fan 41 is fixedly installed inside the exhaust hood 4. An exhaust pipe 42 is fixedly installed at the input air pipe end of the exhaust fan 41. The exhaust pipe 42 is located above the bottom of the inner partition 2 of the experimental chamber. In this embodiment, the exhaust fan 41 inside the exhaust hood 4 works and will discharge the airflow inside the inner partition 2 of the experimental chamber through the exhaust pipe 42 when exhaust is required, so as to avoid excessive pressure inside the inner partition 2 of the experimental chamber.

[0022] Example 4 Based on Embodiment 3, an atomizing humidifier 5 is fixedly installed on the top of the experimental chamber body 1, and an atomizing nozzle 52 is fixedly installed on the top of the inner surface of the experimental chamber body 1. The output pipe of the atomizing humidifier 5 is fixedly connected to the inner wall of the atomizing nozzle 52. A water storage tank 51 is fixedly installed on the side wall of the experimental chamber body 1, and the input pipe of the atomizing humidifier 5 is fixedly connected to the output pipe of the water storage tank 51. In this embodiment, water is stored inside the water storage tank 51. The atomizing humidifier 5 atomizes the water inside the water storage tank 51, and the atomized water is evenly sprayed out through the atomizing nozzle 52 to humidify the inner partition 2 of the experimental chamber, and to conduct high and low temperature humidity and heat test in conjunction with the experimental chamber body 1.

[0023] Example 5 Based on Example 3, this example also proposes a high and low temperature humidity test chamber with rapid temperature rise and fall, including the following steps: Step 1: Open the front door of the main body 1 of the experimental chamber, evenly arrange the materials to be tested on the experimental display rack 22, close the front door of the main body 1 of the experimental chamber, and start the main body 1 of the experimental chamber through the control panel to carry out the high and low temperature humidity test. Step two: First, the air intake fan 32 generates air. The air duct regulating plate 34 is symmetrically distributed in an "eight" shape inside the H-shaped air duct 3, blocking the middle area of ​​the H-shaped air duct 3. The air generated by the air intake fan 32 is guided by the air duct regulating plate 34 into both sides of the H-shaped air duct 3. Through the heating pipe 31, the heat-gathering half-cover 311 generates a certain flow-gathering effect on the incoming air, causing its temperature to rise rapidly and forming hot air. It is discharged through the hot air outlet slot 25, raising the temperature of the inner layer partition 2 area of ​​the experimental chamber. The temperature sensor 26 detects the temperature and completes the high-temperature test. The atomizing humidification device 5 draws water from the water storage tank 51 and atomizes it. The atomized water is evenly sprayed out through the atomizing nozzle 52 to humidify the inner layer partition 2 of the experimental chamber. This, together with the main body of the experimental chamber 1, conducts a high-temperature and humidity test. Step 3: Then, turn off the heating element 31 and the atomizing humidifier 5. Start motor 2 35 to rotate the air duct adjustment plate 34 180°, so that the air duct adjustment plate 34 is symmetrically distributed in an inverted "8" shape inside the H-shaped air duct 3, blocking the areas on both sides of the H-shaped air duct 3. The air generated by the air intake fan 32 is guided by the air duct adjustment plate 34 into the middle area of ​​the H-shaped air duct 3 and discharged through the U-shaped cold air pipe 21. At the same time, start motor 1 24 to drive the drive gear 241 to rotate, thereby driving the adjustment gate rack 23 to move upward. This causes the adjustment gears 214 on both sides of the U-shaped cold air pipe 21 to flip outward at the same time, so that the adjustment baffle... 213 The cold air is directed upwards at an angle, and then discharged through the dry air blowing outlet 212. The upward angled design of the dry air blowing outlet 212 causes the cold air to blow obliquely onto the side wall of the inner layer partition 2 of the experimental chamber. Because the gear 2 341 at the bottom of the air duct adjustment plate 34 is linked to the gear 1 312 at the bottom of the heat-gathering half-cover 311 by a chain, the heat-gathering half-cover 311 will also rotate 180° at this time, surrounding the inside of the heating tube 31 and sealing the hot air outlet 25. The heat-gathering half-cover 311 is arc-shaped to prevent water droplets from condensing on the surface of the heating tube 31. With the help of the cold air drying, the outside of the inner layer partition 2 of the experimental chamber will dry quickly. Step 4: Start the motor 24 to rotate in the reverse direction, so that the motor 24 drives the drive gear 241 to rotate, thereby driving the adjusting gate rack 23 to move downward. This causes the adjusting gears 214 on both sides of the U-shaped cold air pipe 21 to flip inward at the same time, so that the adjusting baffle 213 is inclined downward. The liquid nitrogen circulation cooling component 33 works to quickly cool and generate cold air, which is discharged through the cold air cooling outlet 211. The test materials are displayed on the experimental display board 22. The cold air cooling outlet 211 is set at an angle downward so that the cold air blows on the materials to conduct low temperature tests. Step 5: After the test is completed, turn off the cooling system of the main body 1 of the experimental chamber. Then you can take out the materials on the experimental display shelf 22.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high and low temperature humidity test chamber with rapid temperature rise and fall, comprising a test chamber body (1), characterized in that: The experimental chamber body (1) is equipped with an inner partition (2) for the experimental chamber. An H-shaped air duct (3) is provided on the outside of the inner partition (2). A U-shaped cold air pipe (21) is provided on the inside of the inner partition (2). Heating pipes (31) are symmetrically arranged on both sides of the H-shaped air duct (3). An air intake fan (32) and a liquid nitrogen circulation cooling assembly (33) are provided at one end of the H-shaped air duct (3). The U-shaped cold air pipe (21) is fixedly installed inside the inner partition (2) of the experimental chamber. On the wall, the inner wall of the U-shaped cold air duct (21) is provided with a cold air cooling outlet groove (211), and the upper side wall of the U-shaped cold air duct (21) is symmetrically fixed with a dry air blowing outlet groove (212). The inner sides of the U-shaped cold air duct (21) are symmetrically and rotatably installed with adjusting baffles (213). One end of the rotating shaft of the adjusting baffle (213) is fixedly installed with an adjusting gear (214). The inner surface of the inner layer partition (2) of the experimental chamber is slidably installed with an adjusting gate-shaped rack (23). A motor (24) is fixedly installed on the outer wall of the inner cavity partition (2). A drive gear (241) is fixedly installed on the output shaft of the motor (24). The outer surfaces of the drive gear (241) and the adjusting gear (214) respectively mesh with the outer surfaces of the adjusting gate rack (23). The heating tube (31) is fixedly installed on the top of the experimental chamber body (1). A heat-collecting half-cover (311) is provided on the outside of the heating tube (31). The heat-collecting half-cover (311) is rotatably installed on the H-shaped... Inside the air duct (3), a gear one (312) is fixedly installed at the bottom of the rotating shaft of the heat-gathering half cover (311). Air duct adjustment plates (34) are symmetrically installed on both sides of the middle part of the H-shaped air duct (3). A gear two (341) is fixedly installed at the bottom of the rotating shaft of the air duct adjustment plate (34). The gear two (341) and the gear one (312) are connected by a chain. A motor two (35) that drives the air duct adjustment plate (34) to rotate is symmetrically fixedly installed on the top of the experimental box body (1).

2. The high and low temperature humidity test chamber with rapid temperature rise and fall according to claim 1, characterized in that: The inner walls of the inner partition (2) of the experimental chamber are symmetrically provided with hot air outlet slots (25). A temperature sensor (26) and a humidity sensor (27) are fixedly installed above the inner surface of the inner partition (2) of the experimental chamber. An experimental display rack (22) is slidably installed below the U-shaped cold air pipe (21).

3. The high and low temperature humidity test chamber with rapid temperature rise and fall according to claim 1, characterized in that: An air intake fan (32) is fixedly installed on the outer wall of the H-shaped air duct (3), and a liquid nitrogen circulation cooling assembly (33) is provided on the outer side of the H-shaped air duct (3). The heat exchange tube of the liquid nitrogen circulation cooling assembly (33) is fixedly installed in the middle of the inner side of the H-shaped air duct (3).

4. The high and low temperature humidity test chamber with rapid temperature rise and fall according to claim 1, characterized in that: The bottom of the experimental chamber body (1) is fixedly installed with an exhaust hood (4), and an exhaust fan (41) is fixedly installed inside the exhaust hood (4). An exhaust pipe (42) is fixedly installed at the input air pipe end of the exhaust fan (41), and the exhaust pipe (42) is located above the bottom of the inner partition (2) of the experimental chamber.

5. A high and low temperature humidity test chamber with rapid temperature rise and fall according to claim 1, characterized in that: A humidifying device (5) is fixedly installed on the top of the main body (1) of the experimental chamber. A humidifying nozzle (52) is fixedly installed on the top of the inner surface of the main body (1) of the experimental chamber. The output pipe of the humidifying device (5) is fixedly connected to the inner wall of the humidifying nozzle (52). A water storage tank (51) is fixedly installed on the side wall of the main body (1) of the experimental chamber. The input pipe of the humidifying device (5) is fixedly connected to the output pipe of the water storage tank (51).

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