An environmental simulation test box for air tightness testing equipment

Abstract

The present application relates to an environmental simulation test box for airtightness testing equipment, comprising a testing chamber for placing a test object and an environmental simulation device disposed within the testing chamber, the environmental simulation device comprising a water outlet mechanism and an air blower mechanism, the water outlet mechanism being disposed at the top of the testing chamber to drive liquid to fall vertically downward, a water retaining chamber and a reflux device, one end of the reflux device being connected to the water retaining chamber and the other end being connected to the testing chamber to form an internal circulation flow of air, the water retaining chamber being connected to the testing chamber horizontally, the air blower mechanism being disposed within the testing chamber and away from a side of the water retaining chamber to drive airflow and rainwater within the testing chamber toward the water retaining chamber, the water retaining chamber being provided with multiple sections of curved airflow channels, the curved directions of the curved airflow channels varying in the vertical direction to force the airflow to repeatedly change its flow direction within the channel, thereby intercepting water mist in the airflow and preventing the water mist from entering the interior of the air blower mechanism.

Description

Technical Field

[0001] The present application relates to the technical field of air tightness detection, and in particular to an environmental simulation test box for air tightness detection equipment. Background Art

[0002] Airtightness testing equipment is widely used in the automotive, electronics, and electrical appliance industries, playing a key role in ensuring product quality. Airtightness testing equipment can be used to detect gas leaks in test objects, thereby ensuring that the product's airtightness performance meets the expected standards. In order to simulate various actual usage environments, equipment used for airtightness testing is also used in conjunction with environmental simulation test chambers. Existing environmental simulation test chambers are capable of simulating a variety of complex natural conditions, such as strong winds, high temperatures, and low temperatures. These test chambers create extreme environmental conditions through internal devices such as fans and heating elements to test the airtightness performance of the test object under different environments. However, these devices typically focus on simulating single environmental factors such as high temperatures and strong winds.

[0003] While existing environmental simulation test chambers can simulate a variety of environments, they still have certain deficiencies for certain specific testing needs. Some test objects require airtightness testing in high winds, rain, and flooding, but existing environmental simulation test chambers are generally unable to simulate both winds and rain simultaneously. This is due to poor compatibility between high wind and rain simulation systems, especially in internally circulating high winds and rain. Increased wind speeds often cause rainwater spraying systems to backflow into the fan, rendering it inoperable.

[0004] Therefore, it is necessary to propose an environmental simulation test box for air tightness detection equipment to solve the problem in the existing technology that it is impossible to simultaneously simulate the strong wind and rain environment in the internal circulation, so as to more comprehensively meet the air tightness testing needs under various complex conditions. Summary of the Invention

[0005] The purpose of this application is to overcome the shortcomings of the existing technology and propose an environmental simulation test box for air tightness detection equipment to solve the problem that the existing technology cannot simultaneously simulate the strong wind and rain environment in the internal circulation, and more comprehensively meet the air tightness testing needs under various complex conditions.

[0006] This application is achieved through the following technical solutions:

[0007] The present application proposes an environmental simulation test box for air tightness testing equipment, comprising a testing chamber for placing a test object and an environmental simulation device provided in the testing chamber, wherein the environmental simulation device comprises a water outlet mechanism and an air blowing mechanism, wherein the water outlet mechanism is provided at the top of the testing chamber to drive liquid to fall vertically downward. The present application also comprises:

[0008] A water retaining chamber is horizontally connected to the detection chamber. The blowing mechanism is arranged in the detection chamber and away from the side of the water retaining chamber to drive the airflow and rainwater in the detection chamber to flow toward the water retaining chamber. The water retaining chamber is provided with multiple sections of curved airflow channels. The curved direction of the curved airflow channels changes along the vertical direction to force the airflow to repeatedly change its flow direction in the channel, thereby intercepting water mist in the airflow.

[0009] A reflux device is connected to the water retaining chamber at one end and to the detection chamber at the other end to form an internal circulation flow of the airflow.

[0010] In one embodiment of the present application, the water retaining chamber includes a water retaining room and an inclined baffle, wherein the inclined baffle is arranged in the water retaining room, and the inclined baffle is arranged to be inclined from bottom to top, and its inclined direction forms an angle with the horizontal flow direction of the airflow, so as to guide the airflow to flow upward and force the airflow to change direction;

[0011] A plurality of partition bars are provided in a vertical direction on one side of the inclined baffle facing the detection chamber, and the partition bars are used to disperse and disturb the airflow to intercept water mist in the airflow.

[0012] In one embodiment of the present application, the water retaining chamber includes a plurality of vertical baffles, and the plurality of vertical baffles are arranged in the water retaining chamber. The vertical baffles are arranged in sequence along the direction of the air flow, and a plurality of bifurcation plates are provided on both sides of each of the vertical baffles. The bifurcation plates are used to divert and disturb the airflow, thereby increasing the contact probability between the water mist particles and the baffle surface.

[0013] In one embodiment of the present application, the bifurcated plate is made of a hydrophilic material to increase the adsorption and interception of water mist.

[0014] In one embodiment of the present application, the water retaining chamber includes a refrigeration device, which is used to cool the air in the water retaining chamber so that fine water mist particles condense on the structural surface of the water retaining chamber through condensation.

[0015] In one embodiment of the present application, the water retaining chamber is connected to the reflux device through water filter cotton. The water filter cotton has multiple through holes for allowing the air flow to flow into the reflux device through these through holes to remove water mist particles in the air flow and ensure the purification effect of the air flow.

[0016] In one embodiment of the present application, the detection chamber further includes a drawer frame, a sealed door, and a storage room, wherein the drawer frame is used to place the detection object, the sealed door is fixedly connected to the drawer frame, the storage room is connected to the water retaining chamber, and the drawer frame can be arranged in the storage room;

[0017] The water outlet mechanism includes a water storage tank, a water sprinkling valve and a water sprinkling channel. The water storage tank and the water sprinkling channel are connected through the water sprinkling valve. The water sprinkling valve controls the water from the water storage tank to flow into the water sprinkling channel. The water sprinkling channel is connected to the accommodating room.

[0018] The air blowing mechanism includes a blower and an air blowing channel, the air blowing channel is connected to the accommodating room, the water sprinkling channel outlet is located between the air blowing channel and the water retaining chamber, and the blower drives the air flow through the air blowing channel toward the accommodating room;

[0019] The detection chamber includes a first water storage room, a water tank and a water pump. The first water storage room is connected to the accommodating room and is arranged below the accommodating room. The liquid falling from the accommodating room falls into the first water storage room. The water tank is connected to the first water storage room, and the water tank is connected to the water tank. The water pump is arranged on the water tank to drive the liquid in the water tank to flow into the water tank.

[0020] In one embodiment of the present application, the water retaining chamber also includes a second water storage room, which is connected to the water retaining room. The second water storage room is located below the water retaining room. The liquid intercepted by the water retaining room falls into the second water storage room. The second water storage room is connected to the water tank, and the liquid in the second water storage room flows into the water tank.

[0021] In one embodiment of the present application, the reflux device includes a return valve, a reflux channel, a vent valve, and a vent, the return valve can open or close the reflux channel, the reflux channel is connected to the vent, and the vent valve can open or close the vent;

[0022] When the environmental simulation device is turned on to the wind, rain and water environment or the internal circulation mode, the return valve controls the return flow channel to open, and the vent valve controls the vent to close, so as to form an internal circulation flow of the airflow;

[0023] When the environment simulation device is turned on in a non-internal circulation mode, the return air valve controls the return flow channel to be closed, and the vent valve controls the vent to be open, so that the blower can draw in external air.

[0024] In one embodiment of the present application, the environmental simulation device also includes a boosting device, which is connected to the accommodating room and can change the atmospheric pressure in the accommodating room. When the environmental simulation device turns on the boosting mode, the return air valve controls the return channel to open, and the vent valve controls the vent to close, so as to form an internal circulation flow of the airflow.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. By arranging an environmental simulation device in a closed room, a complex wind and rain environment can be effectively simulated. One end of the reflux device is connected to the water retaining chamber, and the other end is connected to the detection chamber, forming an internal circulation flow of the airflow. The water outlet mechanism and the air blowing mechanism are used in conjunction with each other, and the water retaining chamber is connected to the detection chamber in the horizontal direction. The air blowing mechanism discharges air in the horizontal direction. There are multiple sections of curved airflow channels in the water retaining chamber, and the bending direction of the curved airflow channels changes in the vertical direction to force the airflow to repeatedly change its flow direction in the channel, which significantly improves the interception efficiency of water mist particles in the airflow, avoids water mist from entering the interior of the air blowing device, and ensures the stable operation of the system under high wind speed and heavy rainfall conditions. It prevents external air and water mist from entering the interior of the air blowing device, preventing corrosion and damage inside the equipment. This design effectively solves the problem of poor compatibility between airflow and rainwater in the prior art, and greatly improves the test accuracy of airtightness detection equipment in complex environments.

[0027] 2. The water tank is connected to the first water storage room, and the water tank is connected to the water tank. A water pump is installed on the water tank to drive the liquid in the water tank to flow into the water tank, realizing the recovery and reuse of the liquid. The second water storage room is connected to the water retaining room, and the second water storage room is located below the water retaining room. The liquid intercepted by the water retaining room falls into the second water storage room. The second water storage room is connected to the water tank, and the liquid in the second water storage room flows into the water tank, effectively collecting the liquid formed by the water mist particles intercepted in the water retaining room and circulating it back to the water tank for reuse. This closed liquid circulation system greatly reduces the waste of water resources, reduces the operating costs of the equipment, and improves environmental friendliness.

[0028] 3. The pressurization device is connected to the chamber, changing the atmospheric pressure within the chamber to simulate different pressure environments, particularly for airtightness testing under high-pressure conditions. Combined with the airflow control of the internal circulation, the system maintains stable high-pressure conditions, making it suitable for airtightness testing under simulated high-pressure conditions, such as those found deep in the ocean or during high-altitude flight. This design expands the application range of airtightness testing equipment, making it adaptable to a wider range of testing scenarios.

[0029] 4. The return air valve opens or closes the return flow channel, which is connected to the vent. The vent valve also opens or closes the vent. The combination of the return flow device and the vent valve allows the device to flexibly switch between internal circulation mode and non-internal circulation mode. The device can choose to simulate external ambient air conditions or perform internal air circulation according to actual test requirements, making the device adaptable to various testing needs.

[0030] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 A three-dimensional diagram of an environmental simulation test chamber provided in one embodiment of the present application (with the sealed door closed);

[0033] Figure 2 A three-dimensional diagram of an environmental simulation test chamber provided in one embodiment of the present application (with the sealed door open);

[0034] Figure 3 A three-dimensional diagram of an environmental simulation test chamber provided in one embodiment of the present application;

[0035] Figure 4 A top view of an environmental simulation test chamber provided in one embodiment of the present application;

[0036] Figure 5 A top view of an environmental simulation test chamber provided in one embodiment of the present application;

[0037] Figure 6 for Figure 5 A cross-sectional view of the P1-P1 portion;

[0038] Figure 7 for Figure 5 A cross-sectional view of the P1-P1 portion;

[0039] Figure 8 for Figure 5 A cross-sectional view of the P2-P2 portion;

[0040] Figure 9 A front view of an environmental simulation test chamber provided in one embodiment of the present application;

[0041] Figure 10 for Figure 9 A cross-sectional view of the P3-P3 portion;

[0042] Figure 11 A three-dimensional diagram of an environmental simulation test box provided in one embodiment of the present application.

[0043] Description of reference numerals:

[0044] 10. Environmental simulation test chamber for airtightness testing equipment; 100. Testing chamber; 110. Accommodation chamber; 120. Drawer rack; 130. Sealed door; 140. First water storage chamber; 150. Water storage tank; 160. Water pump; 200. Water retaining chamber; 210. Water retaining chamber; 211. Curved airflow channel; 220. Inclined baffle; 221. Spacer; 230. Vertical baffle; 231. Bifurcation plate; 240. Second water storage room; 250. Refrigeration device; 300. Reflux device; 310. Water filter cotton; 311. Through hole; 320. Return air valve; 330. Reflux channel; 340. Vent valve; 350. Vent; 410. Water outlet mechanism; 411. Water storage tank; 412. Sprinkler valve; 413. Sprinkler channel; 421. Blower; 422. Blower channel; 430. Pressurization device. DETAILED DESCRIPTION

[0045] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0047] It should be noted that when an element is referred to as being “fixed on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0048] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0050] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0051] Please refer to Figures 1 to 11 The present application proposes an environmental simulation test box 10 for air tightness testing equipment, comprising a testing chamber 100 for placing a test object and an environmental simulation device (not marked) provided in the testing chamber 100. The environmental simulation device comprises a water outlet mechanism 410 and an air blowing mechanism (not marked). The water outlet mechanism 410 is provided at the top of the testing chamber 100 to drive the liquid to fall vertically downward. The environmental simulation device also comprises a water retaining chamber 200 and a reflux device 300. The water retaining chamber 200 is horizontally connected to the testing chamber 100. The air blowing mechanism It is arranged in the detection chamber 100 and on one side away from the water retaining chamber 200 to drive the air flow and rainwater in the detection chamber 100 to flow toward the water retaining chamber 200. The water retaining chamber 200 is provided with multiple sections of curved air flow channels 211. The curved direction of the curved air flow channels 211 changes along the vertical direction to force the air flow to repeatedly change its flow direction in the channel, thereby intercepting water mist in the air flow; one end of the reflux device 300 is connected to the water retaining chamber 200, and the other end is connected to the detection chamber 100 to form an internal circulation flow of the air flow.

[0052] Specifically, the detection chamber 100 is used to place the detection object, and the environmental simulation device is arranged in the detection chamber 100. The water outlet mechanism 410 is installed at the top of the detection chamber 100 and is designed to spray liquid, such as water, from the top downward to simulate the rain environment. The air blowing mechanism is arranged in the detection chamber 100 and away from one side of the water retaining chamber 200. This arrangement allows the air flow to flow from one side of the air blowing mechanism toward the water retaining chamber 200 after the air blowing mechanism is turned on, and carry liquid water droplets to form a strong wind and rain environment simulation in the detection chamber 100. Please refer again Figure 7In the figure, there are flow schematic arrows of multiple curved air flow channels. The water retaining chamber 200 is connected to the detection chamber 100 in the horizontal direction, and multiple curved air flow channels are provided therein. In order to improve the interception efficiency of water mist in the air flow, multiple sections of curved air flow channels 211 are provided in the water retaining chamber 200, and the bending direction of the curved air flow channels 211 changes along the vertical direction. This design forces the air flow to repeatedly change its flow direction in the channel, forming a tortuous path similar to an "S" shape, so that the water mist particles in the air flow continuously collide and adhere to the channel wall under the action of inertia, and are thus effectively intercepted. This design solves the problem in the prior art that water mist is difficult to fully separate under high wind speed conditions, and is particularly suitable for simulating complex wind and rain environments. One end of the reflux device 300 is connected to the water retaining chamber 200, and the other end is connected to the detection chamber 100, forming a closed air flow circulation system. The reflux device 300 guides the air condensed and intercepted in the water retaining chamber 200 back into the detection chamber 100, thus achieving internal circulation of the airflow and preventing the water from the rainwater spraying system from flowing back into the blower, thereby ensuring the normal operation of the blower 421. This ensures that the complex environment of strong winds and rain can be simulated simultaneously in the internal circulation mode.

[0053] It should be understood that the existing environmental simulation test box simulates both strong wind and rain environments in the internal circulation mode during air tightness testing, and the existing technology has major deficiencies. The compatibility between the strong wind simulation system and the rain simulation system is poor, which often causes the water flow of the rain spray system to flow back into the blower device, affecting the normal operation of the blower, and thus cannot guarantee the reliable simulation of strong wind and rain environments. This problem limits the ability to conduct comprehensive tests on the air tightness of specific products in complex environments. In the present application, the reflux device 300 allows the air flow to form a closed loop between the detection chamber 100 and the water retaining chamber 200. By arranging multiple curved air flow channels 211 in the water retaining chamber 200, the complexity of the air flow path is significantly increased, so that the water mist particles in the air flow are effectively intercepted during the flow process, reducing the possibility of water mist particles entering the blower, and avoiding the liquid of the rain system from flowing back into the blower 421, further improving the ability to simulate complex environments.

[0054] Please refer to Figure 6 and Figure 7 In one embodiment, the water retaining chamber 200 includes a water retaining room 210 and an inclined baffle 220. The inclined baffle 220 is arranged in the water retaining room 210. The inclined baffle 220 is inclined from bottom to top, and its inclination direction forms an angle with the horizontal flow direction of the airflow to guide the airflow to flow upward and force the airflow to change direction; the inclined baffle 220 is provided with a plurality of partition bars 221 in the vertical direction on the side facing the detection chamber 100. The partition bars 221 are used to disperse and disturb the airflow to intercept water mist in the airflow.

[0055] For details, please refer to Figure 6 and Figure 7 The inclined baffles 220 and vertical baffles 230 are both located within the water retaining chamber 210, forming a multi-section curved airflow channel 211. The water retaining chamber 210 is used to contain and guide airflow. Within the water retaining chamber 210, an inclined baffle 220 is positioned upward, its tilt forming an angle with the horizontal flow direction of the airflow. The inclined baffle 220 guides the airflow upward, forcing the airflow to change direction within the space. This design not only extends the airflow path but also, by forcing the change in direction, further increases the chances of water mist particles in the airflow colliding with the baffle surface. Furthermore, a plurality of partitions 221 are provided on the side of the inclined baffle 220 facing the detection chamber 100. These vertical partitions 221 are designed to provide secondary disturbance and dispersion to the airflow passing through the inclined baffle 220. The partitions 221 further divide and disturb the airflow after it passes through the inclined baffle 220, enhancing airflow mixing. This disturbance not only increases the residence time of the water mist particles in the airflow, but also increases the probability of their contact with the spacer bars 221 and the baffle surface, thereby improving the interception efficiency of the water mist.

[0056] Please refer to Figure 6 and Figure 7 In one embodiment, the water retaining chamber 200 includes a plurality of vertical baffles 230, which are arranged in the water retaining room 210. The vertical baffles 230 are arranged in sequence along the airflow direction, and a plurality of bifurcation plates 231 are provided on both sides of each vertical baffle 230. The bifurcation plates 231 are used to divert and disturb the airflow, thereby increasing the contact probability between the water mist particles and the baffle surface.

[0057] Specifically, multiple vertical baffles 230 are positioned within the water retaining chamber 210, on the side of the inclined baffle 220 facing away from the detection chamber 100. These baffles 230 are sequentially connected to the top and bottom surfaces of the water retaining chamber 210, forming a multi-section curved airflow channel 211. This ensures that the airflow is adequately disturbed as it passes through each vertical baffle 230. This arrangement causes the airflow within the water retaining chamber 200 to undergo a series of continuous disturbances and path changes, thereby extending the residence time of water mist particles within the system. Furthermore, each vertical baffle 230 is flanked by multiple bifurcated plates 231, designed to further divert and disturb the airflow. As the airflow passes through the vertical baffles 230, the bifurcated plates 231 divide the airflow into multiple smaller streams, making the airflow even more turbulent. This turbulent effect increases the chances of water mist particles colliding with the baffle surfaces, significantly improving the efficiency of water mist interception.

[0058] Please refer to Figure 6 and Figure 7In one embodiment, the bifurcated plate 231 is made of a hydrophilic material to improve the adsorption and interception of water mist.

[0059] Specifically, bifurcated plate 231 is made of a hydrophilic material, such as polyvinyl alcohol or cellulose. These materials possess properties that allow them to rapidly absorb water mist particles through surface tension upon contact. These materials possess strong water absorption and good surface wettability. When water mist particles in the airflow come into contact with bifurcated plate 231, the mist rapidly condenses on the plate's surface, forming droplets that adhere to bifurcated plate 231, effectively separating the mist from the airflow.

[0060] Please refer to Figure 6 In one embodiment, the water retaining chamber 200 includes a refrigeration device 250, which is used to cool the air in the water retaining chamber 200 so that fine water mist particles condense on the structural surface in the water retaining chamber 200 through condensation.

[0061] Specifically, the refrigeration device 250 is used to cool the air in the water retaining chamber 200. The refrigeration device 250 can include a series of refrigeration elements, such as cooling coils, semiconductor refrigeration sheets, or a compressor refrigeration system. The function of the refrigeration device 250 is to reduce the air temperature so that the fine water mist particles in the air flow condense due to the sudden drop in air temperature when passing through the water retaining chamber 200. During the condensation process, these water mist particles are rapidly transformed from gaseous or fine liquid particles into larger droplets and adhere to the structural surface of the water retaining chamber 200, thereby achieving efficient water mist collection.

[0062] Condensation process: When the air flow passes through the cooled water retaining chamber 200, due to the decrease in temperature, the water vapor and fine water mist particles in the air will quickly condense on the various structural surfaces (such as the vertical baffle 230, the bifurcation plate 231, etc.) in the water retaining chamber 200. The water droplets formed by condensation gather on the surface of the water retaining chamber 200, and then fall to the bottom of the water retaining chamber 200 due to gravity or are guided into the second water storage room 240. The refrigeration device 250 condenses the fine water mist particles that are difficult to capture by traditional mechanical interception methods by lowering the air temperature. This condensation effect makes it easier for tiny water mist particles to adhere to and gather on the structural surface in the water retaining chamber 200, thereby greatly improving the interception efficiency of fine water mist particles.

[0063] Please refer to Figure 4 and Figure 6 In one embodiment, the water retaining chamber 200 is connected to the backflow device 300 through the water filter cotton 310. The water filter cotton 310 has a plurality of through holes 311 for allowing the air flow to flow into the backflow device 300 through these through holes 311 to remove water mist particles in the air flow and ensure the purification effect of the air flow.

[0064] Specifically, the water filter 310 is installed between the water retaining chamber 200 and the backflow device 300, serving as an additional filter layer to further purify the airflow passing through the water retaining chamber 200. The size of the through-holes 311 on the water filter 310 is designed to balance airflow permeability and water mist interception effectiveness. Made of a highly efficient hydrophilic fiber material, the water filter 310 features a large number of tiny through-holes 311, which allow for smooth airflow while effectively capturing and adsorbing residual water mist particles in the airflow.

[0065] As air flows through the water filter cotton 310, the water mist particles, due to their larger mass and hydrophilicity, are preferentially absorbed by the fibers of the water filter cotton 310, condensing into larger droplets that remain on the water filter cotton 310. This design further enhances the water mist separation effect, making the airflow entering the recirculation device 300 drier and purer, thereby preventing water mist particles from entering key components such as the recirculation device 300 and the blower 421, potentially corroding or damaging them.

[0066] Please refer to Figure 1 、 Figure 2 as well as Figure 6 In one embodiment, the detection chamber 100 further includes a drawer frame 120, a sealed door 130, and a receiving room 110. The drawer frame 120 is used to place the detection object. The sealed door 130 is fixedly connected to the drawer frame 120. The receiving room 110 is connected to the water retaining chamber 200. The drawer frame 120 can be arranged in the receiving room 110.

[0067] Please refer to Figure 10 The water outlet mechanism 410 includes a water tank 411, a water sprinkling valve 412 and a water sprinkling channel 413. The water tank 411 and the water sprinkling channel 413 are connected through the water sprinkling valve 412. The water sprinkling valve 412 controls the water from the water tank 411 to flow into the water sprinkling channel 413. The water sprinkling channel 413 is connected to the accommodating room 110.

[0068] Please refer to Figure 6 and Figure 10 The blowing mechanism includes a blower 421 and a blowing channel 422. The blowing channel 422 is connected to the accommodating room 110. The outlet of the water sprinkling channel 413 is located between the blowing channel 422 and the water retaining chamber 200. The blower 421 drives the air flow through the blowing channel 422 toward the accommodating room 110.

[0069] Please refer to Figure 6 and Figure 10The detection room 100 includes a first water storage room 140, a water tank 150 and a water pump 160. The first water storage room 140 is connected to the accommodating room 110 and is located below the accommodating room 110. The liquid falling from the accommodating room 110 falls into the first water storage room 140. The water tank 150 is connected to the first water storage room 140. The water tank 150 is connected to the water tank 411. The water pump 160 is located on the water tank 150 to drive the liquid in the water tank 150 to flow into the water tank 411.

[0070] Specifically, the drawer rack 120 is used to place the items to be tested, making it convenient for the operator to put in or take out the items to be tested. The drawer rack 120 is fixedly connected to the sealing door 130. The sealing door 130 can ensure the sealing of the detection chamber 100 when closed. The sealing door 130 can cover the detection chamber 100 and be magnetically attracted to the exit edge of the detection chamber 100, that is, it is locked by an electromagnetic lock. The accommodating chamber 110 is connected to the water retaining chamber 200. The drawer rack 120 can be set in the accommodating chamber 110, so that when the items to be tested are placed in the detection position, they are directly in the center area of ​​the simulated environment, ensuring the accuracy and effectiveness of the detection.

[0071] Please refer to Figure 6 and Figure 10 The water tank 150 can be connected to an external water supply device, and the water tank 411 is used to store liquid, usually water, as a source of simulated rainwater. The sprinkler valve 412 controls the flow of liquid between the water tank 411 and the sprinkler channel 413, and adjusts the flow to simulate different rain intensities. The sprinkler channel 413 connects the water tank 411 and the channel of the accommodating room 110. The liquid enters the accommodating room 110 through the sprinkler channel 413 to simulate the rain environment. The blower 421 provides airflow driving force, driving the airflow into the accommodating room 110 through the blast channel 422. The outlet of the sprinkler channel 413 is designed between the blast channel 422 and the water retaining chamber 200 to ensure that the liquid simulates the environment under the combined action of natural rainwater and wind under the action of the airflow.

[0072] Please refer to Figure 4 、 Figure 6 and Figure 10 The detection chamber 100 also includes a liquid circulation system to achieve liquid recovery and reuse. The first water storage room 140 is set below the accommodating room 110 and is used to collect liquid (such as simulated rainwater) falling from the accommodating room 110. The water storage tank 150 is connected to the first water storage room 140 to collect and store the liquid flowing into the first water storage room 140. The water pump 160 is installed on the water storage tank 150 and is responsible for pumping the liquid in the water storage tank 150 back to the water storage tank 411 to achieve liquid recycling.

[0073] Please refer to Figure 6 and Figure 7In one embodiment, the water retaining chamber 200 also includes a second water storage room 240, which is connected to the water retaining room 210. The second water storage room 240 is located below the water retaining room 210. The liquid intercepted by the water retaining room 210 falls into the second water storage room 240. The second water storage room 240 is connected to the water tank 150, and the liquid in the second water storage room 240 flows into the water tank 150.

[0074] Specifically, the second water storage room 240 is connected to the water retaining room 210 and is located below the water retaining room 210. The water retaining room 210 is used to intercept water mist particles brought by the air flow. These water mist particles gradually gather into liquid during the condensation or interception process and eventually fall due to gravity. The second water storage room 240 is set up to collect these falling liquids. Through the second water storage room 240, the liquid intercepted by the water retaining room 210 can be effectively collected, avoiding the random accumulation or dispersion of liquid in the water retaining room 200, which not only helps to maintain the cleanliness of the water retaining room 200 and the normal operation of the equipment, but also prevents liquid loss and improves resource utilization.

[0075] Please refer to Figure 6 and Figure 11 The second water storage room 240 is connected to the water storage tank 150 through a pipeline, and the collected liquid can flow smoothly into the water storage tank 150. After being collected in the water storage tank 150, the liquid can be sent back to the water storage tank 411 by the water pump 160 and enter the water outlet mechanism 410 for recycling, forming a closed liquid circulation system. This allows the liquid to be fully utilized in the system, thereby greatly reducing the waste of water resources and lowering the operating costs of the equipment.

[0076] Please refer to Figure 3 In one embodiment, the reflux device 300 includes a return valve 320, a return channel 330, a vent valve 340, and a vent 350. The return valve 320 can open or close the return channel 330. The return channel 330 is connected to the vent 350. The vent valve 340 can open or close the vent 350.

[0077] When the environmental simulation device is turned on to the wind, rain and water environment or the internal circulation mode, the return valve 320 controls the return flow channel 330 to open, and the vent valve 340 controls the vent 350 to close, so as to form an internal circulation flow of the air flow;

[0078] When the environment simulation device is turned on in the non-internal circulation mode, the return air valve 320 controls the return flow channel 330 to be closed, and the vent valve 340 controls the vent 350 to be open, so that the blower 421 can draw in external air.

[0079] Specifically, the return valve 320 can open or close the return channel 330 , and the vent valve 340 can open or close the vent 350 .

[0080] Internal Circulation Mode (or Rain, Wind, and Water Environment Mode): When simulating a rain, wind, and water environment or requiring internal air circulation, the return valve 320 opens the return flow channel 330, while the vent valve 340 closes the vent 350. This creates a closed loop between the detection chamber 100 and the water retaining chamber 200, preventing interference from external air and ensuring the stability and continuity of the simulated environment. In this mode, the device can more precisely control the composition and characteristics of the airflow.

[0081] Non-circulation mode: When external air is required, return valve 320 is closed and vent valve 340 is opened. Blower 421 then draws in external air through vent 350 and introduces it into test chamber 100. This mode is suitable for testing scenarios that require simulating external ambient air conditions, such as fresh air input or pollutant dilution.

[0082] Please refer to Figure 2 and Figure 3 In one embodiment, the environmental simulation device further includes a boosting device 430, which is connected to the accommodation room 110 and can change the atmospheric pressure of the accommodation room 110; when the environmental simulation device turns on the boosting mode, the return air valve 320 controls the return channel 330 to open, and the vent valve 340 controls the vent 350 to close, so as to form an internal circulation flow of the airflow.

[0083] Specifically, the boosting device 430 is connected to the accommodation room 110. The boosting device 430 is used to adjust the air pressure in the accommodation room 110, and can increase or decrease the air pressure in the detection room 100 according to different test requirements. The boosting device 430 may include an air pump, a compressor or other devices that can produce pressure changes. When it is necessary to simulate a high-pressure environment, the boosting device 430 is started, and compressed air is injected into the accommodation room 110 or the pressure of the internal gas is increased through the boosting device 430, thereby increasing the air pressure in the accommodation room 110. This function is particularly suitable for scenarios where air tightness testing needs to be performed under high-pressure conditions, such as simulating pressure conditions in the deep sea or during high-altitude flight.

[0084] When the environmental simulation device enters pressurization mode, the return valve 320 controls the return channel 330 to open and the vent valve 340 to close, ensuring that the airflow forms a closed internal circulation flow between the accommodating chamber 110, the water retaining chamber 200, and the return channel 330. This design ensures that under pressurization conditions, the air pressure in the detection chamber 100 can be maintained at the required high pressure state, and the leakage of external air will not reduce the test accuracy.

[0085] Internal circulation flow: The return valve 320 controls the opening of the return channel 330, and the vent valve 340 controls the closing of the vent 350. The airflow in the boost mode can form a closed loop within the system, ensuring the airtightness of the system and allowing the airflow to flow under high pressure, which helps to simulate the airflow behavior under real environmental conditions.

[0086] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An environmental simulation test box for air tightness testing equipment, comprising a testing chamber for placing a test object and an environmental simulation device disposed within the testing chamber, wherein the environmental simulation device comprises a water outlet mechanism and an air blowing mechanism, wherein the water outlet mechanism is disposed at the top of the testing chamber to drive liquid to fall vertically downward, characterized in that: Also includes: A water retaining chamber is horizontally connected to the detection chamber. The blowing mechanism is arranged in the detection chamber and away from the side of the water retaining chamber to drive the airflow and rainwater in the detection chamber to flow toward the water retaining chamber. The water retaining chamber is provided with multiple sections of curved airflow channels. The curved direction of the curved airflow channels changes along the vertical direction to force the airflow to repeatedly change its flow direction in the channel, thereby intercepting water mist in the airflow. A reflux device, one end of which is connected to the water retaining chamber and the other end of which is connected to the detection chamber to form an internal circulation flow of the airflow; The water retaining chamber includes a water retaining room and an inclined baffle, wherein the inclined baffle is arranged in the water retaining room, and the inclined baffle is arranged to be inclined from bottom to top, and its inclined direction forms an angle with the horizontal flow direction of the airflow. The water mist particles in the airflow collide with the inclined baffle to guide the airflow to flow upward and force the airflow to change direction; A plurality of partition bars are provided in a vertical direction on one side of the inclined baffle facing the detection chamber, and the partition bars are used to disperse and disturb the airflow to intercept water mist in the airflow.

2. The environmental simulation test box for airtightness detection equipment according to claim 1, characterized in that: The water retaining chamber includes a plurality of vertical baffles, which are arranged in the water retaining room. The vertical baffles are arranged in sequence along the direction of air flow, and a plurality of bifurcation plates are provided on both sides of each vertical baffle. The bifurcation plates are used to divert and disturb the airflow, thereby increasing the contact probability between water mist particles and the baffle surface.

3. The environmental simulation test box for airtightness detection equipment according to claim 2, characterized in that: The bifurcated plate is made of a hydrophilic material to increase the adsorption and interception of water mist.

4. The environmental simulation test box for airtightness detection equipment according to claim 2, characterized in that: The water retaining chamber includes a refrigeration device, which is used to cool the air in the water retaining chamber so that fine water mist particles condense on the structural surface of the water retaining chamber through condensation.

5. The environmental simulation test box for airtightness detection equipment according to claim 2, characterized in that: The water retaining chamber is connected to the reflux device through water filter cotton. The water filter cotton has a plurality of through holes for allowing the air flow to flow into the reflux device through the through holes to remove water mist particles in the air flow and ensure the purification effect of the air flow.

6. The environmental simulation test box for airtightness testing equipment according to claim 2, characterized in that: The detection chamber further includes a drawer frame, a sealed door, and a storage room, wherein the drawer frame is used to place the detection object, the sealed door is fixedly connected to the drawer frame, the storage room is connected to the water retaining chamber, and the drawer frame can be arranged in the storage room; The water outlet mechanism includes a water storage tank, a water sprinkling valve and a water sprinkling channel. The water storage tank and the water sprinkling channel are connected through the water sprinkling valve. The water sprinkling valve controls the water from the water storage tank to flow into the water sprinkling channel. The water sprinkling channel is connected to the accommodating room. The air blowing mechanism includes a blower and an air blowing channel, the air blowing channel is connected to the accommodating room, the water sprinkling channel outlet is located between the air blowing channel and the water retaining chamber, and the blower drives the air flow through the air blowing channel toward the accommodating room; The detection chamber includes a first water storage room, a water tank and a water pump. The first water storage room is connected to the accommodating room and is arranged below the accommodating room. The liquid falling from the accommodating room falls into the first water storage room. The water tank is connected to the first water storage room, and the water tank is connected to the water tank. The water pump is arranged on the water tank to drive the liquid in the water tank to flow into the water tank.

7. The environmental simulation test box for airtightness testing equipment according to claim 6, characterized in that: The water retaining chamber also includes a second water storage room, which is connected to the water retaining room. The second water storage room is located below the water retaining room. The liquid intercepted by the water retaining room falls into the second water storage room. The second water storage room is connected to the water tank, and the liquid in the second water storage room flows into the water tank.

8. The environmental simulation test box for airtightness testing equipment according to claim 6, characterized in that: The reflux device includes a return valve, a reflux channel, a vent valve, and a vent, wherein the return valve can open or close the reflux channel, the reflux channel is connected to the vent, and the vent valve can open or close the vent; When the environmental simulation device is turned on to the wind, rain and water environment or the internal circulation mode, the return valve controls the return flow channel to open, and the vent valve controls the vent to close, so as to form an internal circulation flow of the airflow; When the environment simulation device is turned on in a non-internal circulation mode, the return air valve controls the return flow channel to be closed, and the vent valve controls the vent to be open, so that the blower can draw in external air.

9. The environmental simulation test box for airtightness testing equipment according to claim 8, characterized in that: The environmental simulation device also includes a boosting device, which is connected to the accommodating room and can change the atmospheric pressure in the accommodating room. When the environmental simulation device turns on the boosting mode, the return air valve controls the return channel to open, and the vent valve controls the vent to close, so as to form an internal circulation flow of the airflow.

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