A constant temperature and humidity test chamber

Abstract

This invention discloses a constant temperature and humidity test chamber, comprising a chamber body, a storage chamber, and a control chamber. The chamber body contains a test chamber equipped with a temperature and humidity control component for regulating the temperature and humidity within the chamber. A pressure plate is vertically slidably connected to the inner cavity of the storage chamber. The control chamber includes an air guide pipe connected to the bottom outlet of the storage chamber, a heat exchange pipe surrounding the outer ring of the air guide pipe, an air supply pipe connected to the outlet of the air guide pipe, and an external air inlet pipe connected to the inlet of the heat exchange pipe. This invention reduces the energy consumption of the temperature and humidity control component by transferring and storing air already adjusted to a constant temperature and humidity state within the test chamber, and then re-introducing the transferred air after a new product is placed. Outside air flows into the heat exchange pipe through the external air inlet pipe and is then transported to the side air outlet via the outer wall of the air guide pipe. The air guide pipe preheats the air in the heat exchange pipe, rapidly adjusting the temperature and humidity of the test chamber.

Description

Technical Field

[0001] This invention relates to the field of laboratory chamber technology, and in particular to a constant temperature and humidity test chamber. Background Technology

[0002] A test chamber is a device used to simulate products under specific environmental conditions. It simulates the product's performance in real-world usage environments by controlling parameters such as temperature, humidity, and wind speed. Test chambers are widely used in electronics, electrical appliances, automobiles, building materials, and many other fields to test products' heat resistance, cold resistance, moisture resistance, and other properties.

[0003] In the prior art, Chinese patent CN112718035A discloses a constant temperature and humidity test chamber, including a vertically placed barrel-shaped test chamber, a base, a heating device, a cooling device, a humidifying device, and a counterweight piston. The base is equipped with a bracket for mounting the sample. The test chamber contains a test space located between the counterweight piston and the base. The humidifying device is used to introduce humid air into the test space. The humidifying device includes an atomizing device and a compressor. The atomizing device atomizes water from the water tank to produce water vapor, and the compressor pressurizes the water vapor into the test space. It also includes a circulating fan, a honeycomb rotor, a temperature sensor, a humidity sensor, and a controller. It uses the temperature sensor and humidity sensor to detect the temperature and humidity state inside the test chamber, and adjusts the temperature and humidity state inside the test chamber through the heating device, cooling device, and humidifying device to achieve the purpose of automatically adjusting the temperature and humidity state of the test chamber. When implementing the above solution, each time the product is placed in the test chamber, the chamber door usually needs to be opened before the product is placed inside. This causes the constant temperature and humidity environment in the test chamber to be disrupted, and air will escape through the open chamber door. It is necessary to restart the temperature and humidity control components to adjust the environment of the test chamber. The environmental adjustment process consumes a lot of energy and adjustment time, which affects the test efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a constant temperature and humidity test chamber to address the above-mentioned technical problems. This solves the problem that in the existing technology, each time the product is placed in the test chamber, the air environment in the test chamber that has been adjusted to a constant temperature and humidity is destroyed. Air will be lost through the open door, and the temperature and humidity control components need to be restarted to adjust the environment of the test chamber. The environmental adjustment process consumes a lot of energy and adjustment time, which affects the test efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A constant temperature and humidity test chamber, comprising: The enclosure contains a test chamber. A main door is hinged to the enclosure at the test chamber location. An exhaust plate is vertically slidably connected to the test chamber. A temperature and humidity control assembly is installed in the test chamber to control the temperature and humidity inside the test chamber. The storage chamber is installed in the box, and the top inlet of the storage chamber is connected to the top of the pipeline test chamber. A pressure plate is vertically slidably connected to the inner cavity of the storage chamber. The control chamber includes a vent pipe connected to the bottom outlet of the storage chamber, a heat exchange pipe surrounding the outer ring of the vent pipe, a gas supply pipe connected to the outlet end of the vent pipe, and an external air inlet pipe connected to the inlet end of the heat exchange pipe. The inlet end of the external air inlet pipe extends to the outside of the housing. A solenoid valve is installed at the connection between the storage chamber and the vent pipe. The side of the gas supply pipe is connected to the heat exchange pipe through a side air port.

[0006] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, a mixing chamber is installed in the chamber body, the output end of the mixing chamber is connected to an exhaust plate, and a one-way valve is installed on the exhaust plate to restrict the gas from flowing unidirectionally from the bottom to the top of the one-way valve.

[0007] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, a driving component is installed on the storage chamber, a screw is installed at the output end of the driving component, the screw is threadedly connected to the pressure plate, and a one-way valve is installed on the pressure plate to restrict the unidirectional flow of gas from the top to the bottom of the one-way valve.

[0008] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, a three-way pipe is provided at the connection between the gas supply pipe and the heat exchange pipe. The input end of the three-way pipe is connected to the gas guide pipe, and the two output ends of the three-way pipe are respectively connected to the gas supply pipe and the exhaust pipe. A three-way solenoid valve is installed at the three-way pipe to control the gas guide pipe to communicate with the gas supply pipe or the exhaust pipe respectively. The output end of the exhaust pipe extends to the outside of the chamber.

[0009] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, an external temperature sensor is installed on the outside of the chamber, and a temperature and humidity controller is installed on the chamber. The temperature and humidity controller is equipped with a gas circulation system. The gas circulation system includes a processing unit, a main control unit, an environmental detection unit, a mixing unit, and a cooling unit. The processing unit is signal-connected to the main control unit, the environmental detection unit, the mixing unit, and the cooling unit, respectively. The main control unit is signal-connected to the temperature and humidity control component. The environmental detection unit is signal-connected to the external temperature sensor. The mixing unit is signal-connected to the telescopic component, the solenoid valve, the drive component, and the three-way solenoid valve, respectively. The cooling unit is signal-connected to the drive component and the three-way solenoid valve, respectively.

[0010] As a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, the chamber body is provided with a mixing chamber connected to the test chamber, the chamber body is hinged to the mixing chamber with a secondary door, and the output end of the gas supply pipe is connected to the mixing chamber.

[0011] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, the mixing chamber is connected to the side of the test chamber, and the space of the mixing chamber is smaller than that of the test chamber.

[0012] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, the main door and the auxiliary door are made of transparent heat-insulating glass, and a sealing ring is provided on the outer ring of both the main door and the auxiliary door.

[0013] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, the air guide tube has a ring structure, and thermally conductive silicone grease is provided at the joint between the heat exchange tube and the air guide tube.

[0014] In a preferred embodiment of the constant temperature and humidity test chamber provided by the present invention, the side air port is inclinedly connected to the air supply pipe in the output direction of the air supply pipe, and the diameter of the side air port is smaller than the diameter of the air supply pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a constant temperature and humidity test chamber. When a product needs to be placed, the air in the test chamber that has been adjusted to a constant temperature and humidity state is transferred and stored. After the new product is placed, the transferred air is reintroduced, which reduces the energy consumption of the temperature and humidity control components and improves the efficiency of environmental regulation. At the same time, the outside air flows into the heat exchange tube through the external air inlet pipe and is transported to the side air outlet through the outer wall of the air guide pipe. The air guide pipe preheats the air in the heat exchange tube, which improves the uniformity of the temperature and humidity of the air output through the air delivery pipe and facilitates the rapid adjustment of the temperature and humidity of the test chamber.

[0016] 2. The constant temperature and humidity test chamber provided by this invention addresses the issue of limited storage space, which makes it difficult to efficiently transfer air from the test chamber to the storage chamber. Therefore, external air is supplied through an external air intake pipe, and the incoming air is preheated during the supply process. A certain amount of air is then quickly introduced into the test chamber, ensuring that the input air can quickly reach the preset requirements after being regulated by the temperature and humidity control components. This achieves rapid regulation and saves energy. This differs from existing technologies that use compressed air technology to transfer air from the test chamber. During air compression, the temperature and humidity of the compressed air significantly increase compared to the initial temperature and humidity. When this air is reintroduced into the test chamber, the temperature and humidity of the air entering the chamber differ considerably from the preset initial temperature and humidity, increasing the workload of the temperature and humidity control components and increasing their energy consumption and regulation efficiency.

[0017] 3. The constant temperature and humidity test chamber provided by this invention, when the temperature of the test chamber needs to be lowered to below the ambient temperature, compresses the air at the bottom of the pressure plate by moving it down, putting it in a high-pressure state. At this time, the three-way solenoid valve is controlled to connect the air guide pipe and the exhaust pipe. When the solenoid valve is opened, the high-pressure gas passes through the air guide pipe, which will reduce the temperature of the air guide pipe and be discharged through the exhaust pipe. At this time, the outside air, which is lower than the original air temperature in the storage chamber, enters through the external air inlet pipe and is discharged into the test chamber through the heat exchange pipe and the air delivery pipe. The air entering the heat exchange pipe decreases in temperature after passing through the low-temperature air guide pipe, thereby reducing the temperature of the outside air entering the test chamber, reducing the working time of the temperature and humidity control components, and achieving the purpose of rapid control. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 A schematic diagram of the main cabin door and auxiliary cabin door when opened, provided for the present invention; Figure 3 This is a schematic diagram of the internal structure of the box provided by the present invention; Figure 4 This is a schematic diagram of the control chamber structure in the enclosure provided by the present invention; Figure 5 A schematic diagram of the storage room and control room structure provided by the present invention; Figure 6The control principle diagram of the gas recycling system provided by the present invention; Figure 7 This is a schematic diagram of gas flow when the storage chamber gas is delivered to the test chamber, as provided by the present invention. Figure 8 This is a schematic diagram of gas flow during the cooling of gas input into the external air intake pipe, as provided by the present invention.

[0020] The markings in the diagram are explained as follows: 1. Cabinet; 2. Main hatch; 3. Temperature and humidity controller; 4. External temperature sensor; 5. External air inlet pipe; 6. Secondary hatch; 7. Test chamber; 8. Exhaust plate; 9. Telescopic component; 10. Mixing chamber; 11. One-way valve one; 12. Temperature and humidity control assembly; 13. Storage chamber; 14. Control chamber; 15. Switch solenoid valve; 16. Drive component; 17. Air supply pipe; 18. Air guide pipe; 19. Heat exchange pipe; 20. Side air port; 21. Three-way solenoid valve; 22. Exhaust pipe; 23. Pressure plate; 24. One-way valve two. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0022] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the embodiments of the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Example 1 Please refer to Figures 1-7A constant temperature and humidity test chamber includes a chamber body 1, a storage chamber 13, and a control chamber 14. A test chamber 7 is disposed within the chamber body 1. A main door 2 is hinged to the chamber body 1 at the test chamber 7. An exhaust plate 8 is vertically slidably connected within the test chamber 7. A temperature and humidity control component 12 is installed within the test chamber 7 to regulate the temperature and humidity inside. When a product is placed in the test chamber 7, the temperature and humidity control component 12 adjusts the interior of the test chamber 7 to a corresponding constant temperature and humidity state to meet different testing requirements. By closing the main door 2, the test chamber 7 is sealed, maintaining a stable environment within the test chamber 7. When another batch of products needs to be placed... By controlling the movement of the exhaust plate 8, the air in the test chamber 7, which has been adjusted to a constant temperature and humidity state, is transferred and stored. After a new product is placed, the transferred air is reintroduced, reducing the energy consumption of the temperature and humidity control component 12 and improving the environmental regulation efficiency. In addition, the temperature and humidity control component 12 is a common component in the prior art used to regulate the ambient temperature and humidity. Adjusting the ambient temperature and humidity to the set value is a publicly disclosed prior art solution, which is well known to those skilled in the art and is not within the scope of protection of the technical solution of this application. The specific structure and working principle will not be described in detail in the technical solution of this application.

[0025] It is worth mentioning that, such as Figure 3 and Figure 4 The storage chamber 13 is installed in the housing 1. The top inlet of the storage chamber 13 is connected to the top of the test chamber 7 via a pipeline. The inner cavity of the storage chamber 13 is vertically slidably connected to a pressure plate 23. By controlling the upward movement of the exhaust plate 8, the gas inside the test chamber 7 is drawn into the storage chamber 13 for storage. The outer wall of the storage chamber 13 is covered with a heat insulation layer to reduce the loss of temperature and humidity of the constant temperature and humidity air during the transfer process. By controlling the movement of the pressure plate 23, the air temporarily stored in the storage chamber 13 is transferred back to the test chamber 7 to quickly adjust the temperature and humidity state of the test chamber 7. The temperature and humidity control component 12 is used for precise adjustment so that the test chamber 7 can quickly reach a constant temperature and humidity state, achieving the purpose of rapid control and saving energy.

[0026] Additionally, please see Figure 5 and Figure 7The control chamber 14 includes a vent pipe 18 connected to the bottom outlet of the storage chamber 13, a heat exchange pipe 19 surrounding the outer ring of the vent pipe 18, a gas supply pipe 17 connected to the outlet of the vent pipe 18, and an external air inlet pipe 5 connected to the inlet of the heat exchange pipe 19. The inlet of the external air inlet pipe 5 extends to the outside of the housing 1. A solenoid valve 15 is installed at the connection between the storage chamber 13 and the vent pipe 18. The side of the gas supply pipe 17 is connected to the heat exchange pipe 19 through a side air port 20. When the solenoid valve 15 is opened, air in the storage chamber 13 enters the vent pipe 18 and is supplied with gas. Air is discharged into the test chamber 7 through the air supply pipe 17. At this time, using Bernoulli's principle, the air inside the heat exchange tube 19 is quickly drawn into the air supply pipe 17 through the side air port 20 to quickly replenish the air volume in the test chamber 7. During this process, outside air flows into the heat exchange tube 19 through the external air inlet pipe 5 and is transported to the side air port 20 through the outer wall of the air guide pipe 18. The air guide pipe 18 preheats the air in the heat exchange tube 19, improving the uniformity of the temperature and humidity of the air output through the air supply pipe 17, which facilitates the rapid adjustment of the temperature and humidity of the test chamber 7.

[0027] Through the above structural design, due to the space limitation of the storage chamber 13, the air in the test chamber 7 is not easily transferred to the storage chamber 13 efficiently. Therefore, external air is supplemented through the external air intake pipe 5. During the supplementation process, the external air is preheated and a certain amount of air is quickly introduced into the test chamber 7. The air is also ensured to reach the preset requirements quickly after being regulated by the temperature and humidity control component 12, thereby achieving the purpose of rapid regulation and saving energy.

[0028] Unlike existing technologies that use compressed air to transfer air in the test chamber 7, the air temperature will increase significantly and the humidity will change during the air compression process compared to the initial temperature and humidity. When the air is reintroduced into the test chamber 7, the temperature and humidity of the air entering the test chamber 7 will change significantly from the preset initial temperature and humidity, which increases the workload of the temperature and humidity control component 12, increases its energy consumption and control efficiency.

[0029] In this embodiment, please refer to Figure 4 and Figure 5The housing 1 contains a mixing chamber 10, the output of which is connected to an exhaust plate 8. A one-way valve 11 is installed on the exhaust plate 8 to restrict the unidirectional flow of gas from the bottom to the top of the one-way valve 11. Initially, the exhaust plate 8 is located at the top of the test chamber 7 to avoid affecting product testing. When it is necessary to transfer the gas from the test chamber 7 to the storage chamber 13, the mixing chamber 10 moves the exhaust plate 8 down to the bottom and then up. Utilizing the one-way flow restriction of the one-way valve 11, the gas from the test chamber 7 is temporarily stored in the storage chamber 13, improving the air transfer effect within the test chamber 7 and reducing dead zones and the mixing of external air. Additionally, the storage chamber 1... A drive unit 16 is installed on the 3rd floor. A screw is installed at the output end of the drive unit 16. The screw is threadedly connected to the pressure plate 23. A one-way valve 24 is installed on the pressure plate 23 to restrict the unidirectional flow of gas from the top to the bottom of the one-way valve 24. The air transferred to the storage chamber 13 enters the bottom of the pressure plate 23 through the one-way valve 24. When it is necessary to transfer the air in the storage chamber 13 to the test chamber 7, by controlling the operation of the drive unit 16 and opening the solenoid valve 15, the pressure plate 23 pushes the air into the air guide pipe 18, which can improve the air transfer efficiency in the storage chamber 13. Unlike the air pump transfer method, it reduces the degree of temperature and humidity change in the storage chamber 13.

[0030] Additionally, please participate Figures 6-8 A three-way pipe is provided at the connection between the gas supply pipe 17 and the heat exchange pipe 19. The input end of the three-way pipe is connected to the gas guide pipe 18, and the two output ends of the three-way pipe are respectively connected to the gas supply pipe 17 and the exhaust pipe 22. A three-way solenoid valve 21 is installed at the three-way pipe to control the gas guide pipe 18 to communicate with either the gas supply pipe 17 or the exhaust pipe 22. The output end of the exhaust pipe 22 extends to the outside of the chamber 1. When the temperature in the storage chamber 13 is higher than the ambient temperature, and it is necessary to adjust the constant temperature and humidity environment of the test chamber 7, when a high temperature adjustment is required, the gas in the storage chamber 13 normally enters the test chamber 7 through the gas guide pipe 18 and the gas supply pipe 17, so that the air environment in the test chamber 7 quickly reaches an initial value higher than the ambient temperature, reducing the workload of the temperature and humidity control component 12 and saving energy. In addition, when it is necessary to lower the temperature of the test chamber 7 and it is lower than the ambient temperature, the solenoid valve 15 is closed and the drive component 16 is activated by controlling the switch. Figure 8As shown, the downward movement of the pressure plate 23 compresses the air at the bottom of the pressure plate 23, putting it under high pressure. At this time, the three-way solenoid valve 21 is controlled to connect the air guide pipe 18 and the exhaust pipe 22. When the switch solenoid valve 15 is opened, the high-pressure gas passes through the air guide pipe 18, which lowers the temperature of the air guide pipe 18 and is discharged through the exhaust pipe 22. At this time, the outside air, which is lower than the original air temperature in the storage chamber 13, enters through the external air intake pipe 5 and is discharged into the test chamber 7 through the heat exchange pipe 19 and the air supply pipe 17. The air entering the heat exchange pipe 19 is cooled down after passing through the low-temperature air guide pipe 18, thereby reducing the temperature of the outside air entering the test chamber 7, reducing the working time of the temperature and humidity control component 12, and achieving the purpose of rapid control. In addition, the air pump installed on the top actively inputs outside air into the external air intake pipe 5, improving the air input efficiency.

[0031] In this embodiment, please refer to Figures 1-4 The chamber 1 is equipped with a mixing chamber 10 connected to the test chamber 7. A secondary door 6 is hinged to the mixing chamber 10. The output end of the air supply pipe 17 is connected to the mixing chamber 10. By setting up the mixing chamber 10, the air discharged through the air supply pipe 17 is buffered by the mixing chamber 10 and slowly introduced into the test chamber 7, so that it can better integrate with the original environment in the test chamber 7 and ensure the stability of the environment inside the test chamber 7. In addition, when a new product needs to be added during the test, the product is placed in the mixing chamber 10 by opening the secondary door 6 and then pushed into the test chamber 7. The air discharged through the air supply pipe 17 pre-treats the temperature and humidity of the product, reducing the large temperature and humidity difference between the product and the test chamber 7, and reducing the impact on the constant temperature and humidity environment in the test chamber 7. The mixing chamber 10 is connected to the side of the test chamber 7. The space of the mixing chamber 10 is smaller than that of the test chamber 7, reducing the environmental changes in the test chamber 7 when a new product is added during the test.

[0032] Preferably, the side air port 20 is inclined to the gas supply pipe 17 in the output direction of the gas supply pipe 17. The diameter of the side air port 20 is smaller than the diameter of the gas supply pipe 17. When the gas passes through the gas supply pipe 17 quickly, the air in the heat exchange tube 19 is quickly guided into the gas supply pipe 17 through the side air port 20 using Bernoulli's principle, reducing the use of the air pump and saving energy. The gas guide pipe 18 has a ring structure. Thermal grease is provided at the joint between the heat exchange tube 19 and the gas guide pipe 18, so that the temperature of the gas guide pipe 18 is quickly transferred to the heat exchange tube 19, thereby regulating the temperature of the air passing through the heat exchange tube 19.

[0033] In addition, the main hatch 2 and the auxiliary hatch 6 are made of transparent heat-insulating glass, and both the main hatch 2 and the auxiliary hatch 6 are equipped with sealing rings on their outer edges, so that operators can easily observe the test status of the products in the test chamber 7 from the outside and make it convenient to record.

[0034] Example 2 The constant temperature and humidity test chamber provided in Example 1 has been further optimized. The differences from Example 1 are as follows: Please refer to [link / reference needed]. Figures 6-8 An external temperature sensor 4 is installed on the outside of the enclosure 1. A temperature and humidity controller 3 is installed on the enclosure 1. The temperature and humidity controller 3 is equipped with a gas recycling system. The gas recycling system includes a processing unit, a main control unit, an environmental detection unit, a mixing unit, and a cooling unit. The processing unit is connected to the main control unit, the environmental detection unit, the mixing unit, and the cooling unit by signal. The main control unit is connected to the temperature and humidity control component 12 by signal. The environmental detection unit is connected to the external temperature sensor 4 by signal. The mixing unit is connected to the telescopic component 9, the solenoid valve 15, the drive component 16, and the three-way solenoid valve 21 by signal. The cooling unit is connected to the drive component 16 and the three-way solenoid valve 21 by signal.

[0035] Through the above design, by inputting temperature and humidity parameters to the processing unit, the processing unit sends a control signal to the main control unit, which then controls the temperature and humidity control component 12 to adjust the temperature and humidity in the test chamber 7 to a corresponding constant temperature and humidity environment. When a new product needs to be replaced, the processing unit sends a transfer signal to the mixing unit, which controls the mixing chamber 10 to work. The air in the test chamber 7 is transferred to the storage chamber 13 by the movement of the exhaust plate 8 within the test chamber 7. After the product replacement is completed, the processing unit sends a circulation signal to the mixing unit, which controls the drive component 16 to work and the solenoid valve 15 to open. The air in the storage chamber 13 is mixed with the preheated air from the outside and then input into the test chamber 7, which quickly regulates the air in the test chamber 7. At the same time, the processing unit sends a control signal to the main control unit, which adjusts the temperature and humidity in the test chamber 7 to a corresponding constant temperature and humidity environment by working the temperature and humidity control component 12.

[0036] When the temperature and humidity in the test chamber 7 need to be adjusted, the processing unit sends the corresponding temperature and humidity parameters to the environmental detection unit. The environmental detection unit compares the corresponding temperature with the temperature of the air temporarily stored in the storage chamber 13 and the temperature data fed back by the external temperature sensor 4. When it is determined that the adjusted temperature is higher than the temperature of the air temporarily stored in the storage chamber 13, the environmental detection unit sends a high temperature control signal to the processing module. The processing module sends a control signal to the mixing unit. The mixing unit controls the operation of the drive unit 16 and the opening of the solenoid valve 15 to mix the air in the storage chamber 13 and the preheated air outside and input it into the test chamber 7 to quickly regulate the air in the test chamber 7. At the same time, the processing unit sends a control signal to the main control unit, and the temperature and humidity in the test chamber 7 are adjusted to the corresponding constant temperature and humidity environment through the operation of the temperature and humidity control component 12. When the adjusted temperature is determined to be between the temperature data fed back by the storage chamber 13 and the external temperature sensor 4, the environmental detection unit feeds back an environmental control signal to the processing module. At this time, the outside air is directly input into the test chamber 7 to avoid the air temperature in the storage chamber 13 from affecting the temperature control of the test chamber 7. When the adjusted temperature is determined to be lower than the temperature data fed back by the external temperature sensor 4, the environmental detection unit sends a cooling control signal to the processing module. The processing module then sends a cooling control signal to the cooling unit. The cooling unit controls the drive unit 16 to operate and the solenoid valve 15 to close, initially compressing the air in the storage chamber 13. It also controls the three-way solenoid valve 21 to operate, connecting the air guide pipe 18 and the exhaust pipe 22, so that the outside air is cooled by the heat exchange pipe 19 and then input into the test chamber 7. Thus, according to the environmental control status of the test chamber 7, the corresponding temperature control signal is automatically activated to achieve the purpose of intelligent control, improve the efficiency of environmental control, and realize the work of automated and intelligent environmental control.

Claims

1. A constant temperature and humidity test chamber, characterized in that, include: The box (1) is equipped with a test chamber (7). The box (1) is hinged to the test chamber (7) with a main door (2). The test chamber (7) is vertically slidably connected with an exhaust plate (8). The test chamber (7) is equipped with a temperature and humidity control component (12) for controlling the temperature and humidity inside the test chamber (7). Storage chamber (13), the storage chamber (13) is installed in the box (1), the top inlet of the storage chamber (13) is connected to the top of the pipeline test chamber (7), and the inner cavity of the storage chamber (13) is vertically slidably connected to a pressure plate (23). The control chamber (14) includes a gas guide pipe (18) connected to the bottom outlet of the storage chamber (13), a heat exchange pipe (19) surrounding the outer ring of the gas guide pipe (18), a gas supply pipe (17) connected to the outlet of the gas guide pipe (18), and an external air inlet pipe (5) connected to the inlet of the heat exchange pipe (19). The inlet of the external air inlet pipe (5) extends to the outside of the box (1). A switch solenoid valve (15) is installed at the connection between the storage chamber (13) and the gas guide pipe (18). The side of the gas supply pipe (17) is connected to the heat exchange pipe (19) through a side air port (20). The housing (1) is provided with a mixing chamber (10) that is connected to the test chamber (7). The housing (1) is hinged with a sub-chamber door (6) at the mixing chamber (10). The output end of the gas supply pipe (17) is connected to the mixing chamber (10).

2. The constant temperature and humidity test chamber according to claim 1, characterized in that, The housing (1) is equipped with a mixing chamber (10), the output end of which is connected to an exhaust plate (8). A one-way valve (11) is installed on the exhaust plate (8) to restrict the gas from flowing unidirectionally from the bottom to the top of the one-way valve (11).

3. A constant temperature and humidity test chamber according to claim 2, characterized in that, A drive unit (16) is installed on the storage chamber (13). A screw is installed at the output end of the drive unit (16). The screw is threadedly connected to the pressure plate (23). A one-way valve (24) is installed on the pressure plate (23) to restrict the gas from flowing unidirectionally from the top of the one-way valve (24) to the bottom of the one-way valve (24).

4. A constant temperature and humidity test chamber according to claim 3, characterized in that, A three-way pipe is provided at the connection between the gas supply pipe (17) and the heat exchange pipe (19). The input end of the three-way pipe is connected to the gas guide pipe (18). The two output ends of the three-way pipe are respectively connected to the gas supply pipe (17) and the exhaust pipe (22). A three-way solenoid valve (21) is installed at the three-way pipe to control the gas guide pipe (18) to communicate with the gas supply pipe (17) or the exhaust pipe (22). The output end of the exhaust pipe (22) extends to the outside of the box body (1).

5. A constant temperature and humidity test chamber according to claim 4, characterized in that, An external temperature sensor (4) is installed on the outside of the housing (1). A temperature and humidity controller (3) is installed on the housing (1). A gas recycling system is mounted on the temperature and humidity controller (3). The gas recycling system includes a processing unit, a main control unit, an environmental detection unit, a mixing unit, and a cooling unit. The processing unit is connected to the main control unit, the environmental detection unit, the mixing unit, and the cooling unit. The main control unit is connected to the temperature and humidity control component (12). The environmental detection unit is connected to the external temperature sensor (4). The mixing unit is connected to the telescopic component (9), the switching solenoid valve (15), the driving component (16), and the three-way solenoid valve (21). The cooling unit is connected to the driving component (16) and the three-way solenoid valve (21).

6. A constant temperature and humidity test chamber according to claim 1, characterized in that, The mixing chamber (10) is connected to the side of the test chamber (7), and the space of the mixing chamber (10) is smaller than that of the test chamber (7).

7. A constant temperature and humidity test chamber according to claim 6, characterized in that, The main cabin door (2) and the auxiliary cabin door (6) are made of transparent heat-insulating glass, and the outer rings of the main cabin door (2) and the auxiliary cabin door (6) are provided with sealing rings.

8. A constant temperature and humidity test chamber according to claim 1, characterized in that, The side air inlet (20) is inclined to the gas supply pipe (17) in the output direction of the gas supply pipe (17), and the diameter of the side air inlet (20) is smaller than the diameter of the gas supply pipe (17).

9. A constant temperature and humidity test chamber according to claim 1, characterized in that, The air guide pipe (18) has an annular structure, and thermally conductive silicone grease is provided at the joint between the heat exchange pipe (19) and the air guide pipe (18).

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