A constant temperature and humidity test chamber

Abstract

This utility model discloses a constant temperature and humidity test chamber, including a chamber body. One side of the chamber body has a test chamber and a sealed door, while the other side has a control device, a heating assembly, and an atomizing assembly. The test chamber contains alternating hot air and moisture inlet pipes, both horizontally fixed to the side wall of the chamber. Each hot air and moisture inlet pipe has a uniformly distributed number of hot air inlet holes on its side wall, and each moisture inlet pipe has a uniformly distributed number of moisture inlet holes. The hot air inlet pipes are connected to the heating assembly via hot air delivery pipes, and the moisture inlet pipes are connected to the atomizing assembly via moisture delivery pipes. A bracket assembly is rotatably mounted on the bottom wall of the test chamber, and the chamber body has a drive motor for rotating the bracket assembly. This utility model optimizes the internal structure to achieve uniform distribution of moisture and hot air, improving the accuracy of test results.

Description

Technical Field

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

[0002] Constant temperature and humidity test chambers are widely used in material performance testing in industries such as electronics, electrical appliances, communications, instrumentation, vehicles, plastic products, metals, food, chemicals, building materials, medical, and aerospace. However, current constant temperature and humidity test chambers on the market have significant defects in the distribution of hot and moist air. For example, the constant temperature and humidity test chamber disclosed in Chinese Utility Model Patent No. CN208494250U only introduces gas into the test chamber through a single hot air inlet and a single moisture inlet, resulting in uneven contact between the workpiece under test and heat or moisture. This not only affects the accuracy of the test results but may also mislead the quality assessment of the product.

[0003] Therefore, there is an urgent need for a constant temperature and humidity test chamber that can evenly distribute hot air and moisture within the test chamber. Utility Model Content

[0004] The purpose of this invention is to provide a constant temperature and humidity test chamber that optimizes the internal structure to achieve uniform distribution of moisture and heat, improves the accuracy of test results, and effectively solves the problem of uneven distribution of heat and moisture in existing constant temperature and humidity test chambers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A constant temperature and humidity test chamber includes a chamber body. One side of the chamber body has a test chamber and a sealed door. The other side of the chamber body has a control device, a heating assembly, and an atomizing assembly. The test chamber contains alternating hot gas injection pipes and moisture injection pipes, both horizontally distributed and fixed to the side wall of the test chamber. Each hot gas injection pipe has a uniformly distributed number of hot gas inlet holes on its side wall, and each moisture injection pipe has a uniformly distributed number of moisture inlet holes on its side wall. The hot gas injection pipes are connected to the heating assembly via hot gas delivery pipes, and the moisture injection pipes are connected to the atomizing assembly via moisture delivery pipes. A bracket assembly for placing the product to be tested is rotatably mounted on the bottom wall of the test chamber. The chamber body is equipped with a drive motor for rotating the bracket assembly.

[0007] Furthermore, the bracket assembly includes a rotating shaft and a horizontally distributed grid frame. A fixing plate is provided in the middle of the grid frame. The upper end of the rotating shaft is connected to the fixing plate, and the lower end of the rotating shaft is connected to the output shaft of the drive motor.

[0008] Furthermore, a ring of limiting rings is fixed above the grid frame, and the limiting rings are welded to the grid frame through several connecting rods.

[0009] Furthermore, the bottom wall of the test chamber is provided with a water collection tank, and the bottom of the water collection tank is connected to a drain pipe for draining excess water.

[0010] Furthermore, the chamber also includes an air circulation system, which includes an air inlet pipe, an air outlet pipe, and a circulating fan. The air inlet pipe is vertically installed in the middle of the top wall of the test chamber, and the air outlet pipe is horizontally installed in the lower part of the side wall of the test chamber. The air inlet of the circulating fan is connected to the air outlet pipe through a pipe, and the air outlet of the circulating fan is connected to the air inlet pipe through a pipe.

[0011] Furthermore, a flow guide is installed at the lower end of the air intake pipe, and a number of upward-facing air outlets are provided on the outer periphery of the flow guide. A spherical reflector is provided on the top wall of the test chamber, located directly above the flow guide, with the opening of the spherical reflector facing downward.

[0012] Furthermore, the heating assembly includes a heating box with openings at both ends, an electric heating wire for heating air is provided inside the heating box, one end of the heating box is connected to the hot air delivery pipe, and the other end of the heating box is provided with a first blower.

[0013] Furthermore, the atomizing assembly includes a water tank, a water pump, and an atomizing box with an opening. The bottom of the atomizing box has a return hole communicating with the water tank. The interior of the atomizing box is equipped with an atomizing nozzle and a second blower. The opening of the atomizing box is connected to the moisture delivery pipe. The water pump is connected to the water tank and the atomizing nozzle through pipes.

[0014] Furthermore, the sidewall of the test chamber is equipped with a temperature sensor and a humidity sensor. The control device includes a PLC controller, an operation switch and a display screen. The operation switch, the display screen, the temperature sensor, the humidity sensor, the circulating fan, the electric heating wire, the first blower, the water pump, the second blower and the drive motor are respectively connected to the PLC controller.

[0015] Furthermore, the sealed door is equipped with an observation window made of transparent, high-temperature resistant material.

[0016] Compared with the prior art, this utility model provides a constant temperature and humidity test chamber, which has the following beneficial effects:

[0017] This invention, through the combination of a hot air guiding injection pipe and a moisture guiding injection pipe, enables hot air and moisture to be evenly distributed within the test chamber, effectively solving the problem of uneven distribution of hot air and moisture in existing constant temperature and humidity test chambers. This enhances the uniformity of the gas within the test chamber and provides a stable environment for performance testing of the product under test. Simultaneously, the use of a drive motor to slowly rotate the bracket assembly ensures that the product under test can fully and evenly contact the gas within the test chamber, improving the accuracy and reliability of the test results. Attached Figure Description

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

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-view perspective.

[0020] Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective.

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a three-dimensional structural diagram of the bracket assembly;

[0023] Figure 5 This is a schematic diagram of the heating assembly.

[0024] Figure 6 This is a schematic diagram of the atomizing component.

[0025] Figure 7 This is a block diagram illustrating the control principle of this utility model.

[0026] Reference numerals: 1. Chamber; 11. Test chamber; 12. Hot gas inlet pipe; 121. Hot gas inlet hole; 13. Moisture inlet pipe; 131. Moisture inlet hole; 14. Water collection tank; 15. Air inlet pipe; 16. Air outlet pipe; 17. Circulating fan; 18. Flow guide; 181. Air outlet; 19. Spherical reflector; 2. Heating assembly; 21. Heating box; 22. Electric heating wire; 23. First blower; 3. Atomizing assembly; 31. Water tank; 32. Water pump; 33. Atomizing box; 331. Return hole; 34. Atomizing nozzle; 35. Second blower; 4. Hot air delivery pipe; 5. Humidity delivery pipe; 6. Bracket assembly; 61. Rotating shaft; 62. Grid frame; 63. Fixing plate; 64. Limiting ring; 65. Connecting rod; 7. Drive motor; 8. Sealing door; 81. Observation window; 9. Control device; 91. PLC controller; 92. Operating switch; 93. Display screen; 94. Temperature sensor; 95. Humidity sensor. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below through detailed embodiments and in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] Please refer to Figures 1-7This embodiment provides a constant temperature and humidity test chamber, including a chamber body 1. One side of the chamber body 1 is provided with a test chamber 11 and a sealing door 8. The other side of the chamber body 1 is provided with a control device 9, a heating assembly 2, and an atomizing assembly 3. The heating assembly is used to heat and generate hot air, and the atomizing assembly is used to generate moisture. Several hot air inlet pipes 12 and moisture inlet pipes 13 are alternately distributed in the inner cavity of the test chamber 11. Both the hot air inlet pipes 12 and 13 are horizontally distributed and fixed to the side wall of the test chamber 11. Several hot air inlet holes 121 are evenly provided on the side wall of the hot air inlet pipes 12, and several moisture inlet holes 131 are evenly provided on the side wall of the moisture inlet pipes 13. The hot air inlet pipes 12 are connected to the heating assembly 2 via a hot air delivery pipe 4, and the moisture inlet pipes 13 are connected to the atomizing assembly 3 via a moisture delivery pipe 5. The bottom wall of the test chamber 11 is rotatably mounted with a bracket assembly 6 for placing the product to be tested, and the chamber body 1 is equipped with a drive motor 7 for driving the bracket assembly 6 to rotate. In this way, through the provided hot air and moisture inlet pipes, hot air and moisture can be evenly distributed within the test chamber, effectively solving the problem of uneven distribution of hot air and moisture in existing constant temperature and humidity test chambers, enhancing the uniformity of the gas within the test chamber, and providing a stable environment for performance testing of the product to be tested. Simultaneously, the drive motor drives the bracket assembly to rotate slowly, ensuring that the product to be tested can fully and evenly contact the gas within the test chamber, improving the accuracy and reliability of the test results.

[0029] refer to Figure 5 and Figure 7 In some specific embodiments, the heating assembly 2 includes a heating box 21 with openings at both ends. The heating box 21 contains an electric heating wire 22 for heating air. One end of the heating box 21 is connected to the hot air delivery pipe 4, and the other end of the heating box 21 is equipped with a first blower 23. Thus, the electric heating wire can be used to heat the air, and the hot air can be stably delivered to the test chamber via the hot air delivery pipe through the first blower.

[0030] refer to Figure 6 and Figure 7In some specific embodiments, the atomizing component 3 includes a water tank 31, a water pump 32, and an atomizing box 33 with an opening. The bottom of the atomizing box 33 has a return hole 331 communicating with the water tank 31. The interior of the atomizing box 33 is equipped with an atomizing nozzle 34 and a second blower 35. The opening of the atomizing box 33 is connected to the moisture delivery pipe 5. The water pump 32 is connected to the water tank 31 and to the atomizing nozzle 34 via pipes. In this way, the water in the water tank can be pressurized and delivered to the atomizing nozzle to form moisture using the water pump, and the moisture can be stably delivered to the test chamber via the moisture delivery pipe using the second blower.

[0031] refer to Figure 1 and Figure 4 In some specific embodiments, the bracket assembly 6 includes a rotating shaft 61 and a horizontally distributed grid frame 62. A fixing plate 63 is provided in the middle of the grid frame 62. The upper end of the rotating shaft 61 is connected to the fixing plate 63, and the lower end of the rotating shaft 61 is connected to the output shaft of the drive motor 7 via a connector. Specifically, the grid frame 62 includes a circular frame and several metal rods welded perpendicularly to each other inside the circular frame.

[0032] As an improved implementation method, such as Figure 4 As shown, a ring of limiting rings 64 is fixed above the grid frame 62, and the limiting rings 64 are welded to the grid frame 62 via several connecting rods 65. The limiting rings prevent the product to be tested, placed on the grid frame, from being thrown off by the centrifugal force generated by slow rotation.

[0033] refer to Figure 1 In some embodiments, the bottom wall of the test chamber 11 is provided with a water collection tank 14, and the bottom of the water collection tank 14 is connected to a drain pipe to drain excess water generated during the test and prevent water from accumulating in the test chamber and affecting the test results.

[0034] refer to Figure 1 and Figure 2 In some specific embodiments, the sealing door 8 is provided with an observation window 81 made of a transparent, high-temperature resistant material such as quartz glass, so that the state changes of the product to be tested inside the test chamber can be clearly observed during the test.

[0035] refer to Figures 1-3 and Figure 7In some embodiments, the housing 1 further includes an air circulation system. Specifically, the air circulation system includes an inlet pipe 15, an outlet pipe 16, and a circulating fan 17. The inlet pipe 15 is vertically installed in the middle of the top wall of the test chamber 11, and the outlet pipe 16 is horizontally installed in the lower part of the side wall of the test chamber 11. The air inlet of the circulating fan 17 is connected to the outlet pipe 16 through a pipe, and the air outlet of the circulating fan 17 is connected to the inlet pipe 15 through a pipe. Through the provided air circulation system, air at the bottom of the test chamber can be extracted by the circulating fan and reintroduced into the top of the test chamber through the inlet pipe, promoting airflow within the test chamber, forming air circulation, and further improving the uniformity of hot air and moisture distribution within the test chamber.

[0036] As an improved implementation method, such as Figure 2 and Figure 3 As shown, a flow guide 18 is installed at the lower end of the air inlet pipe 15. The flow guide 18 has several upward-facing air outlets 181 on its outer periphery. A spherical reflector 19 is located directly above the flow guide 18 on the top wall of the test chamber 11, with its opening facing downwards. Through the cooperation of the flow guide 18 and the spherical reflector, the circulating air, upon re-entering the test chamber, is first obliquely sprayed towards the spherical reflector, and then reflected downwards by the spherical reflector. This results in a 360-degree dispersion of the air re-entering the test chamber, greatly promoting the uniform distribution of hot and humid air within the test chamber.

[0037] refer to Figure 1 , Figure 2 and Figure 7 In some specific embodiments, the sidewalls of the test chamber 11 are equipped with a temperature sensor 94 and a humidity sensor 95. The control device 9 includes a PLC controller 91, an operation switch 92, and a display screen 93. The operation switch 92, the display screen 93, the temperature sensor 94, the humidity sensor 95, the circulating fan 17, the electric heating wire 22, the first blower 23, the water pump 32, the second blower 35, and the drive motor 7 are respectively connected to the PLC controller 91. The humidity sensor and the temperature sensor are used to monitor the humidity and temperature changes in the test chamber in real time to ensure the stability of the test environment. The display screen is used to display the working status.

[0038] It should be noted that the operating switches, display screen, temperature sensor, humidity sensor, circulating fan, electric heating wire, first blower, water pump, second blower, drive motor, and PLC controller used are all conventional electrical components. Appropriate models can be selected according to actual needs, and they can be purchased through commercial channels. Therefore, their specific structure and principles will not be described in detail.

[0039] refer to Figures 1-7 During use, place the product to be tested on the bracket assembly 6, close the sealing door 8, and press the power switch to start the equipment. Set the corresponding test parameters by pressing the corresponding operation switch 92 and start the test program. The electric heating wire 22 heats the air, and the first blower 23 delivers the hot air to the test chamber 11 in a stable and even manner through the hot air delivery pipe 4 and the hot air guide injection pipe 12 until the set temperature range is reached; the water pump 32 pressurizes the water in the water tank 31 and delivers it to the atomizing nozzle 34 to form moisture, and the second blower 35 delivers the moisture to the test chamber 11 in a stable and even manner through the moisture delivery pipe 5 and the moisture guide injection pipe 13 until the set humidity range is reached; during this process, the circulating fan 17 acts as a catalyst. The air at the bottom of the test chamber 11 can be extracted and then reintroduced into the top of the test chamber 11 through the air inlet pipe 15. The air is then reflected downwards in a 360-degree arc by the spherical reflector 19, promoting airflow and creating air circulation. This further improves the uniformity of hot and humid air distribution within the test chamber. Simultaneously, the drive motor 7 drives the bracket assembly 6 to rotate slowly, causing the product under test to rotate synchronously. This ensures that the product under test can fully and evenly contact the gas within the test chamber, improving the accuracy and reliability of the test results. After the test procedure is completed, the sealed door is opened, and the product is removed.

[0040] This utility model's constant temperature and humidity test chamber effectively solves the problem of uneven distribution of heat and humidity in the existing technology through various structural optimizations, improving the accuracy and reliability of the test and providing more precise equipment support for material performance testing.

[0041] The above embodiments are merely illustrative of the concept and technical solution of this utility model, and are not intended to limit this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A constant temperature and humidity test chamber, comprising a chamber body, wherein a test chamber and a sealed door are provided on one side of the chamber body, and a control device, a heating assembly, and an atomizing assembly are provided on the other side of the chamber body, characterized in that, The test chamber contains several alternating hot gas injection pipes and moisture injection pipes, both horizontally fixed to the side walls of the chamber. Each hot gas injection pipe has a uniformly distributed number of hot gas inlet holes, and each moisture injection pipe has a uniformly distributed number of moisture inlet holes. The hot gas injection pipes are connected to the heating assembly via hot gas delivery pipes, and the moisture injection pipes are connected to the atomizing assembly via moisture delivery pipes. A bracket assembly for placing the product to be tested is rotatably mounted on the bottom wall of the test chamber, and the chamber is equipped with a drive motor for rotating the bracket assembly.

2. The constant temperature and humidity test chamber according to claim 1, characterized in that, The bracket assembly includes a rotating shaft and a horizontally distributed grid frame. A fixing plate is provided in the middle of the grid frame. The upper end of the rotating shaft is connected to the fixing plate, and the lower end of the rotating shaft is connected to the output shaft of the drive motor.

3. The constant temperature and humidity test chamber according to claim 2, characterized in that, A ring of limiting rings is fixed above the grid frame, and the limiting rings are welded to the grid frame through several connecting rods.

4. The constant temperature and humidity test chamber according to claim 1, characterized in that, The bottom wall of the test chamber is provided with a water collection tank, and the bottom of the water collection tank is connected to a drain pipe.

5. The constant temperature and humidity test chamber according to claim 1, characterized in that, The chamber also includes an air circulation system, which includes an air inlet pipe, an air outlet pipe, and a circulating fan. The air inlet pipe is vertically installed in the middle of the top wall of the test chamber, and the air outlet pipe is horizontally installed in the lower part of the side wall of the test chamber. The air inlet of the circulating fan is connected to the air outlet pipe through a pipe, and the air outlet of the circulating fan is connected to the air inlet pipe through a pipe.

6. The constant temperature and humidity test chamber according to claim 5, characterized in that, The lower end of the air intake pipe is equipped with a flow guide, and the outer periphery of the flow guide is provided with a number of upward-facing air outlets. The top wall of the test chamber is provided with a spherical reflector located directly above the flow guide, and the opening of the spherical reflector faces downward.

7. The constant temperature and humidity test chamber according to claim 5, characterized in that, The heating assembly includes a heating box with openings at both ends. The heating box is equipped with an electric heating wire for heating air. One end of the heating box is connected to the hot air delivery pipe, and the other end of the heating box is equipped with a first blower.

8. The constant temperature and humidity test chamber according to claim 7, characterized in that, The atomizing assembly includes a water tank, a water pump, and an atomizing box with an opening. The bottom of the atomizing box has a return hole communicating with the water tank. The atomizing box is equipped with an atomizing nozzle and a second blower. The opening of the atomizing box is connected to the moisture delivery pipe. The water pump is connected to the water tank and the atomizing nozzle through pipes.

9. The constant temperature and humidity test chamber according to claim 8, characterized in that, The sidewall of the test chamber is equipped with a temperature sensor and a humidity sensor. The control device includes a PLC controller, an operation switch and a display screen. The operation switch, the display screen, the temperature sensor, the humidity sensor, the circulating fan, the electric heating wire, the first blower, the water pump, the second blower and the drive motor are respectively connected to the PLC controller.

10. The constant temperature and humidity test chamber according to claim 1, characterized in that, The sealed door is equipped with an observation window made of transparent, high-temperature resistant material.

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