Air filtration demonstration device

Abstract

The utility model provides a kind of air filtration demonstration device, wherein air filtration demonstration device includes: shell piece, shell piece has accommodating cavity inside, at least part shell piece can be seen through;Smoke generating piece, smoke generating piece is loaded with the smoke sample of generating smoke, under the operating condition of air filtration demonstration device, smoke sample is placed in accommodating cavity;At least 2 filter pieces, filter piece can be assembled filter core respectively, and filter core is placed in accommodating cavity, each filter piece can independently filter the smoke generated by smoke sample;At least 2 smoke exhaust pieces, smoke exhaust piece is used to filter the smoke after filter piece filtering is scattered to shell piece outside, and smoke exhaust piece is corresponding with filter piece respectively;Realize the filtering effect of directly comparing multiple different filter pieces, more comprehensive assessment the performance of different filter pieces.

Description

Technical Field

[0001] This utility model relates to the field of air purification technology, specifically to an air filtration demonstration device. Background Technology

[0002] In numerous fields, such as automobiles and industrial workshops, the performance of air filtration devices is crucial, and visually demonstrating their filtration effect is a key step in evaluating and selecting suitable filters. Existing air filtration demonstration devices, such as the one described in patent publication number CN212276682U, can effectively demonstrate the filtration process of a single air conditioning filter, but their limitation lies in the fact that they can only test and evaluate a single filter. When faced with multiple air filters of different brands or models, simultaneous comparative demonstrations are not possible. In practical applications, such as product demonstrations and educational presentations, this significantly restricts users' ability to intuitively compare and select the performance of different filters.

[0003] Furthermore, although other devices, such as patent publication number CN220557743U, attempt to address the problem of simultaneously testing multiple air filters, their designs typically involve simply combining multiple devices similar to CN212276682U. This combination method presents several problems. On the one hand, users find it difficult to intuitively observe the differences in the filtration functions of multiple air filters because the filtration effects of each filter are displayed in a scattered and uncomparable manner, failing to clearly demonstrate the differences in gas changes before and after filtration. On the other hand, this combined device increases the number of components and complicates the structure, not only increasing production costs but also reducing the stability and reliability of the device, causing numerous inconveniences in manufacturing and subsequent maintenance.

[0004] Therefore, there is an urgent need in the market for a device that can simultaneously demonstrate the filtration effects of multiple air filters. This device should have an intuitive comparison display function, allowing users to clearly see the differences in filtration effects of different filters under the same conditions. At the same time, the structural design should be simple and reasonable, easy to manufacture and maintain, so as to meet the needs of intuitively demonstrating the performance of air filters in different scenarios. Utility Model Content

[0005] The problem solved by this invention is to provide an air filtration demonstration device that enables direct comparison of the filtration effects of multiple different filter elements, and to more comprehensively evaluate the performance of different filter elements.

[0006] To address the aforementioned problems, this utility model provides an air filtration demonstration device, comprising: a housing component having a receiving cavity, at least a portion of which is transparent; a smoke generator containing a smoke sample that generates smoke, wherein the smoke sample is placed within the receiving cavity during operation of the air filtration demonstration device; at least two filter elements, each of which can be fitted with a filter cartridge, and the filter cartridge is placed within the receiving cavity, each of which can independently filter the smoke generated by the smoke sample; and at least two smoke exhaust components for dispersing the smoke filtered by the filter elements to the outside of the housing component, each smoke exhaust component corresponding to one of the filter elements.

[0007] Optionally, the filter element is plate-shaped and has an angle between it and the horizontal plane ranging from 30° to 90° when installed.

[0008] Optionally, the filter element is plate-shaped and assembled within the housing component at an angle inclined to the horizontal plane, with the angle between the sidewall of the filter element and the horizontal plane ranging from 30° to 90°.

[0009] Optionally, the angle between the filter element and the horizontal plane is the same as the angle between the side wall of the filter element and the horizontal plane.

[0010] Optionally, the number of filter elements is two, and the two filter elements are arranged on opposite sides of the housing; the distance between the tops of the oppositely arranged filter elements is smaller than the distance between the bottoms.

[0011] Optionally, the filter element is detachably connected to the housing element.

[0012] Optionally, the filter element is slidably connected to or snap-fitted to the housing element.

[0013] Optionally, the smoke exhaust component is fixedly connected to or detachably connected to the side wall of the housing component.

[0014] Optionally, the housing component may have a trapezoidal or rectangular structure.

[0015] Optionally, a buffer gap is provided between the smoke exhaust component and the filter component.

[0016] Optionally, the housing includes a top surface located above the smoke generator and a side surface connected to the top surface. The top surface and the side surface together form the receiving cavity, which has an opening. The smoke generator is detachably covered by the opening. After the filter element of the filter is placed in the receiving cavity, the side surface near the filter is distributed parallel to the filter. The smoke exhaust element is distributed parallel to the corresponding filter.

[0017] Optionally, the top surface includes a main surface parallel to the horizontal plane and a first folded surface and a second folded surface located on both sides of the main surface. There is a first included angle between the first folded surface and the main surface, and a second included angle between the second folded surface and the main surface. The first folded surface and the second folded surface each have an insertion port that passes through the receiving cavity. The filter element is placed in the receiving cavity through the insertion port. The insertion port and the filter element form a sealed connection. The number of insertion ports corresponds one-to-one with the number of filter elements.

[0018] Optionally, handles located on both sides of the top surface may also be included.

[0019] Optionally, the smoke generator is located at the lower end of the housing.

[0020] Optionally, the smoke generator is located between the filters, and the smoke generator includes a cigarette lighter for igniting the smoke sample; the cigarette lighter is an electronic cigarette lighter.

[0021] Optionally, the housing component is made of a transparent material.

[0022] Optionally, the surface of the housing on which the smoke exhaust component is mounted is arranged at an angle to the horizontal plane where the bottom of the housing is located, and the surface of the housing on which the smoke exhaust component is mounted is perpendicular to the visual observation direction.

[0023] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0024] In the technical solution of the air filtration demonstration device of this utility model, the housing has a receiving cavity, and part of the housing is transparent. The smoke generator is used to hold the smoke sample that generates smoke. After the smoke generator is assembled into the housing, the smoke sample is placed in the receiving cavity when the air filtration demonstration device is in operation. There are at least two filter elements, each of which can be equipped with a filter cartridge, and the filter cartridge is placed in the receiving cavity. Each filter element can independently filter the smoke generated by the smoke sample. There are at least two smoke exhaust elements, which are used to disperse the smoke filtered by the filter elements to the outside of the housing. The smoke exhaust elements correspond to the filter elements respectively. This design can test and demonstrate the filter cartridges of multiple filter elements at the same time, and multiple filter cartridges filter the smoke fairly. Furthermore, the part that is connected to the housing is transparent, allowing users to intuitively compare the filtration effects of different filter elements, thereby more comprehensively evaluating and selecting suitable filter elements. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the air filtration demonstration device in one embodiment of the present invention;

[0026] Figure 2This is an exploded view of the air filtration demonstration device in one embodiment of the present invention;

[0027] Figure 3 for Figure 1 Cross-sectional view of AA;

[0028] Figure 4 This is an exploded view of the structure of the first and second frame borders in a filter element according to an embodiment of the present invention;

[0029] Figure 5 This is an exploded view of the structure of the first and second frame borders in the filter element in another embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the filter element in another embodiment of the present invention;

[0031] Figure 7 This is a schematic diagram of the smoke generator in one embodiment of the present invention. Detailed Implementation

[0032] The existing air filtration demonstration device still has some problems.

[0033] Based on this, the present invention provides an air filtration demonstration device. The housing has a receiving cavity, and a portion of the housing is transparent. A smoke generator is used to hold a smoke sample that generates smoke. After the smoke generator is assembled into the housing, the smoke sample is placed inside the receiving cavity during the operation of the air filtration demonstration device. There are at least two filter elements, each capable of being fitted with a filter cartridge, which is placed inside the receiving cavity. Each filter element can independently filter the smoke generated by the smoke sample. There are at least two smoke exhaust elements, used to disperse the filtered smoke to the outside of the housing. Each smoke exhaust element corresponds to one of the filter elements. This design allows for simultaneous testing and demonstration of the filter cartridges of multiple filter elements, and all filter cartridges filter the smoke fairly. Furthermore, the transparent portion of the housing allows users to visually compare the filtration effects of different filter elements, thus enabling a more comprehensive evaluation and selection of suitable filter elements.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0035] Please refer to Figures 1 to 3 An air filtration demonstration device 100 includes a housing 200, a smoke generator 300, two filters 400, and two smoke exhaust devices 101.

[0036] In this embodiment, the housing 200 has a receiving cavity 200a, wherein a portion of the housing 200 is made transparent. The smoke generator 300 is loaded with a smoke sample 301 that generates smoke. After the smoke generator 300 is assembled into the housing 200, when the air filtration demonstration device 100 is in operation, the smoke sample 301 is placed in the receiving cavity 200a. The filter element 400 includes a filter cartridge, which is placed in the receiving cavity 200a. The smoke sample 301 is located in the space between adjacent filter elements 400. Each filter element 400 can independently filter the smoke generated by the smoke sample 301. The smoke exhaust element 101 is used to remove the smoke sample 301. The smoke filtered by the filter element 400 is dispersed to the outside of the housing 200. The smoke exhaust element 101 is mounted on the housing 200 and corresponds to the filter element 400. By integrating the smoke generator 300, the filter element 400, and the smoke exhaust element 101 into a single housing 200, a compact and fully functional air filtration demonstration device 100 is provided, which is easy to carry and use. Furthermore, the transparent design of part of the housing 200 allows users to intuitively observe the entire process of smoke generation and filtration, enhancing the demonstration effect. At the same time, each filter element 400 filters the smoke generated by the smoke sample 301 fairly and independently, demonstrating the filtration effect of different filters 400 and facilitating comparative analysis.

[0037] In this embodiment, there are two filter elements 400 and two smoke exhaust elements 101.

[0038] In other embodiments, the number of filter elements 400 may be 3, 4 or more, and the number of smoke exhaust elements 101 may also be 3, 4 or more, depending on actual needs.

[0039] In this embodiment, the housing 200 is made of transparent material. The transparent housing 200 allows users to clearly observe the entire filtration process inside the device, enhancing the intuitiveness of the demonstration. It is especially suitable for occasions where the filtration effect needs to be visually displayed. Furthermore, it facilitates users to monitor the operating status inside the device in real time, promptly identify and address any potential problems, and improve the reliability of the device.

[0040] In other embodiments, the surface of the housing 200 on which the smoke exhaust component 101 is mounted may be made of a transparent material, which can be set according to the user's choice.

[0041] In this embodiment, the smoke exhaust component 101 includes a fan, which can effectively exhaust the filtered smoke from the housing component 200, improving the overall operating efficiency of the device, and is especially suitable for occasions where a large amount of smoke needs to be processed quickly; in addition, the design of the fan can be optimized to reduce operating noise and improve the comfort of the device in the usage environment.

[0042] In this embodiment, one smoke exhaust component 101 corresponds to one air outlet 101a.

[0043] In this embodiment, the housing 200 includes a top surface 201 located above the smoke generator 300 and side surfaces 202 connected around the top surface 201. The top surface 201 and the side surfaces 202 together enclose the receiving cavity 200a. The receiving cavity 200a has an opening (not marked in the figure). The smoke generator 300 is detachably covered by the opening. After the filter element of the filter element 400 is placed in the receiving cavity 200a, the side surfaces 202 near the filter element of the filter element 400 are distributed parallel to the filter element 400. The smoke exhaust element 101 is distributed parallel to the corresponding filter element 400.

[0044] In other embodiments, the smoke generator 300 may also be fixedly connected to the housing 200, i.e., non-detachable. In this case, the side surface 202 may be provided with an openable window for placing the smoke sample.

[0045] In this embodiment, please refer to Figure 3 The top surface 201 and the side surface 202 of the housing 200 together enclose the receiving cavity 200a, providing a stable structure to ensure the stability of the entire device and prevent deformation or damage during use. At the same time, the smoke generator 300 is detachably covered by the opening, which facilitates the user to clean and replace the smoke sample 301, improving the maintenance convenience of the device and reducing cleaning time. In addition, the design of the top surface 201 and the side surface 202 allows users to observe the filtration process inside the device from multiple angles, enhancing the intuitiveness of the demonstration, and is especially suitable for occasions that require multi-angle observation.

[0046] In this embodiment, the top surface 201 is V-shaped, that is, the top surface 201 includes a main surface 201b parallel to the horizontal plane and a first folded surface 201c and a second folded surface 201d located on both sides of the main surface 201b. There is a first included angle α1 (not marked in the figure) between the first folded surface 201c and the main surface 201b, and there is a second included angle α2 (not marked in the figure) between the second folded surface 201d and the main surface 201b. Both included angles α1 and α2 are acute angles. By utilizing the included angles between the first folded surface 201c and the second folded surface 201d and the main surface 201b, the side surface 202 connected to the first folded surface 201c and the second folded surface 201d can also have a certain inclination with the horizontal plane, thereby facilitating the user's visual observation.

[0047] In this embodiment, the horizontal plane is the horizontal plane on which the air filtration demonstration device is placed.

[0048] In this embodiment, the top surface 201 has an insertion port 201a that penetrates the receiving cavity 200a. The first folded surface 201c and the second folded surface 201d are respectively provided with the insertion port 201a. The filter element 400 is placed in the receiving cavity 200a through the insertion port 201a. The insertion port 201a and the filter element 400 form a sealed connection. The number of insertion ports 201a corresponds one-to-one with the number of filter elements 400. On the one hand, this can ensure the sealing between the filter element 400 and the housing 200, prevent the leakage of unfiltered smoke, and ensure the reliability of the filtration effect. On the other hand, the one-to-one correspondence between each insertion port 201a and the filter element 400 ensures the independent sealing of each filter element 400, improves the reliability of filtration, and facilitates the individual replacement and maintenance of the filter element 400. Furthermore, the design of the V-shaped bend top surface 201 and the insertion port 201a makes the installation of the filter element 400 more convenient, reduces installation time, and improves operating efficiency.

[0049] In this embodiment, handles 201e located on both sides of the top surface 201 are also included, wherein the handles 201e are through-hole structures.

[0050] In this embodiment, the handle 201e is used to facilitate the taking out of the air filtration demonstration device 100.

[0051] In this embodiment, the filter element 400 is placed inside the receiving cavity 200a and forms a sealed fit with the inner wall of the receiving cavity 200a.

[0052] In this embodiment, the smoke exhaust component 101 is assembled on the side wall of the housing component 200, and the filter element 403 of the filter element 400 is placed between the smoke exhaust component 101 and the receiving cavity 200a. The smoke exhaust component 101 is assembled on the side wall of the housing component 200 and corresponds to the filter element 403 of the filter element 400, which can reasonably arrange the airflow path to ensure that the filtered smoke can be effectively discharged. Users can also directly compare the filtration performance of different filter elements 400 by observing the odor emitted. It also helps to improve the air handling efficiency of the entire device, reduce the residence time of smoke in the housing, and ensure that the filtration effect is displayed in a timely manner. At the same time, the reasonably arranged smoke exhaust component 101 can prevent the filtered smoke from flowing back to the filter element 400, avoid secondary pollution, and ensure the reliability of the filtration effect.

[0053] In this embodiment, the surface of the housing 200 on which the smoke exhaust component 101 is installed is arranged at an angle to the horizontal plane where the bottom of the housing 200 is located, and the surface of the housing 200 on which the smoke exhaust component 101 is installed is perpendicular to the visual observation direction. This way, the user can directly observe the internal filtration status without bending over significantly, thereby reducing observation fatigue.

[0054] In this embodiment, a buffer gap 102 is provided between the smoke exhaust component 101 and the filter component 400. The buffer gap 102 between the smoke exhaust component 101 and the filter component 400 provides additional space for the filtered smoke, allowing the user to clearly observe the changes in the smoke after passing through the filter component 400, thus enhancing the demonstration effect. In addition, through the buffer gap 102, the user can intuitively compare the state of the smoke before and after filtration, better understand the filtration effect, and at the same time, the buffer gap 102 reduces the direct contact between the filter component 400 and the smoke exhaust component 101, preventing the filtered smoke from being disturbed and ensuring the accurate demonstration of the filtration effect.

[0055] In this embodiment, the filter element 400 is plate-shaped and assembled inclined to the horizontal plane within the housing 200. The sidewall of the filter element 400 forms an angle α of 30° to 90° with the horizontal plane. The inclined assembly of the filter element 400 optimizes the airflow path, allowing smoke to pass through the filter element 400 more evenly, improving filtration efficiency. Furthermore, the inclined filter element 400 increases the filtration area compared to the horizontally placed filter element 400, further improving the filtration effect and reducing the replacement frequency of the filter element 400. At the same time, the inclined design reduces the resistance of smoke in the filter element 400, allowing smoke to pass through more smoothly.

[0056] In this embodiment, the filter element 403 is plate-shaped, and the angle between it and the horizontal plane in the installed state ranges from 30° to 90°. This inclined to vertical installation state helps to increase the effective filtration area, because the inclined or vertical installation allows the plate-shaped filter element to unfold in the vertical direction, and a larger filtration area can be arranged in a unit volume, improving space utilization. At the same time, it optimizes the airflow or liquid flow distribution. The inclined angle helps to guide the fluid to pass through the filter material more evenly, reducing local high flow velocity or dead zones, avoiding "short-circuit" phenomenon, and making filtration more thorough. On the other hand, it improves the particulate matter capture efficiency: under the action of gravity, larger particles are more likely to settle or be intercepted along the inclined surface, reducing the risk of clogging and extending the filter element life. Moreover, it more accurately reflects the overall performance. This installation method avoids testing only a local area of ​​the filter element, making the performance evaluation closer to the actual operating state, and the results are more representative.

[0057] In its embodiments, the filter element 403 may also be honeycomb-shaped, cylindrical, etc.

[0058] In this embodiment, the plate-shaped filter element achieves the largest filtration area with the least air resistance in the same space, and is the easiest to process, replace and clean.

[0059] In this embodiment, the angle between the filter element 403 and the horizontal plane is the same as the angle between the side wall of the filter element 400 and the horizontal plane; this is equivalent to making the filter surface (the surface of the filter element) completely parallel to the housing guide surface (the side wall of the filter element facing the filter element): so that the airflow no longer makes small bends, the filtration angle is consistent, and the dust slides smoothly, which reduces local eddies and resistance, and makes the entire plate area uniformly dusted. The measured performance is closer to the theoretical value. During installation, it can be directly aligned with the side wall for positioning, saving brackets and reducing leakage, achieving multiple benefits.

[0060] In this embodiment, two filter elements 400 are arranged on opposite sides of the housing 200. The distance L1 between the tops of the oppositely arranged filter elements 400 is smaller than the distance L2 between the bottoms. This design provides better structural stability, prevents the filter elements 400 from shifting during use, ensures the stability of the filtration effect, and reduces the size of the air filtration demonstration device 100, making it easier to carry.

[0061] In this embodiment, the filter element 400 is detachably connected to the housing element 200. Specifically, the housing element 200 is provided with a sliding groove 203, and the side wall of the filter element 400 is provided with a small sliding groove 405 that matches the sliding groove 203. The filter element 400 and the housing element 200 achieve sliding engagement through the sliding groove 203 and the small sliding groove 405.

[0062] In other embodiments, the filter element 400 and the housing element 200 may also be snap-fitted together, etc.

[0063] In this embodiment, the filter element 400 is detachably connected to the housing 200, making the maintenance and replacement of the filter element 400 more convenient, extending the service life of the entire device, and reducing maintenance costs; and users can replace different types of the filter element 400 as needed, enhancing the applicability and flexibility of the device to adapt to different filtration needs and experimental conditions.

[0064] Please refer to Figure 2 and Figure 4 ,as well as Figure 6 The filter element 400 includes a first frame 401, one side of which is open; a second frame 402, which is detachably connected to the first frame 401 and is fitted onto the open side of the first frame 401, forming a closed frame; and a filter element 403, which is fitted into the closed frame formed by the first frame 401 and the second frame 402.

[0065] In this embodiment, the end where the first frame 401 connects to the second frame 402 has a protrusion 401d, and the end where the second frame 402 connects to the first frame 401 is provided with a buckle 402b that matches the protrusion 401d. After the buckle 402b is fitted onto the protrusion 401d, the first frame 401 and the second frame form a closed frame.

[0066] In this embodiment, please refer to Figure 4 The second frame 402 is snapped together with the first frame 401.

[0067] In this embodiment, please refer to Figure 4 The first frame 401 includes: a first side frame 401a and a second side frame 401b disposed opposite to each other, and an intermediate frame 406 connecting the first side frame 401a and the second side frame 401b respectively; the first side frame 401a and the second side frame 401b are disposed in parallel, and the intermediate frame 406 is perpendicular to the first side frame 401a and the second side frame 401b respectively, wherein the first side frame 401a and the second side frame 401b have the small sliding groove 405, and the small sliding groove 405 matches the sliding groove 203 of the housing 200 to realize the sliding matching connection between the filter element 400 and the housing 200.

[0068] In this embodiment, the first side frame 401a, the second side frame 401b, and the middle frame 406 are an integral structure, which improves the integrity and durability of the filter element 400 and reduces potential weaknesses at the splicing points.

[0069] In this embodiment, the edge of the middle frame 406 has an extended border 406a, and a handle 404 is mounted on the extended border 406a. The design of the handle 404 improves the comfort of user operation, especially when the filter element 400 needs to be frequently replaced or adjusted, reducing fatigue caused by inconvenient operation.

[0070] In other embodiments, the handle 404 may not be located within the extended frame 406a, but may simply be connected to the first frame 401.

[0071] In other embodiments, please refer to Figure 5 The middle frame 406 has a through hole 406b that communicates with the closed frame. The filter element 403 is inserted directly through the through hole 406b into the closed frame formed by the first frame 401 and the second frame 402.

[0072] In this embodiment, after the second frame 402 is connected to the first frame 401, the second frame 402 is arranged parallel to the middle frame 406. The parallel arrangement of the second frame 402 and the middle frame 406 ensures that the filter element 403 of the filter element 400 is distributed parallel to the side surface 202 of the housing 200, which optimizes the airflow path and improves the filtration efficiency.

[0073] In this embodiment, the inner side of the first frame 401 has a first slot 401c, and the edge of the filter element 403 is located within the first slot 401c.

[0074] In this embodiment, the second frame 402 has a second slot 402a on its inner side. After the second frame 402 is connected to the first frame 401, the edge of the filter element 403 is also confined within the second slot 402a.

[0075] In this embodiment, the arrangement of the first slot 401c and the second slot 402a ensures the precise installation position of the filter element 403, reduces installation errors, and improves the overall performance of the filter element 400.

[0076] In other embodiments, a gasket (not shown in the figure) is also provided on the side wall surface of the first slot 401c. The gasket can achieve a sealed connection between the filter element 403 and the first slot 401c. The gasket can also be used to compensate for the size of the filter element 403. When the size of the filter element 403 is not completely matched with the first slot 401c, the gasket plays the role of compensating for the size of the filter element 403, so the precision requirements of the filter element 403 in the manufacturing process do not need to be very high.

[0077] In other embodiments, a fixed shaft (not shown in the figure) is also provided in the first slot 401c, arranged along the extending direction of the first slot 401c. One end of the fixed shaft is detachably fixed in the intermediate frame and fits against the edge of the first slot 401c. When the size of the filter element 403 is small, one end of the fixed shaft is fixed to the intermediate frame. The gasket has a through hole along the extending direction of the first slot 401c. The through hole extends through which the fixed shaft passes, fixing the gasket to the surface near the first slot 401c. One end of the gasket is in a free state. When the filter element 403 is inserted into the first slot 401c, the filter element 403 and the gasket are in an interference fit. The free end of the gasket is located between the filter element 403 and the first slot 401c.

[0078] The material of the gasket can be plastic.

[0079] In this embodiment, the first side frame 401a and the second side frame 401b are not retractable.

[0080] In other embodiments, the first side frame 401a and the second side frame 401b can also be retracted to accommodate testing of filter elements 403 of different sizes. Specifically, supplementary side frames are also included that snap onto the first side frame 401a and the second side frame 401b respectively. The supplementary side frame has a slot similar to the first slot 401c. One end of the supplementary side frame is provided with a buckle 402b that is detachably connected to the end of the first side frame 401a and the end of the second side frame 401b. The opposite end of the supplementary side frame is provided with a protrusion 401d that is connected to the buckle 402b of the second frame 402. In this way, when the length of the filter element 403 becomes smaller, the supplementary side frame can be used to supplement the length of the first frame, thereby accommodating testing of filter elements of more sizes.

[0081] The supplementary side frame described herein also includes a first sub-supplementary side frame and a second sub-supplementary side frame. The first sub-supplementary side frame has an axial sliding groove on the opposite surface of the slot. The second sub-supplementary side frame has an integrally formed axial rib in the corresponding slot. The rib is embedded in the sliding groove to form a telescopic sliding pair. The end of the second sub-supplementary side frame is provided with a locking sleeve. After the locking sleeve is rotated, it radially presses the first sub-supplementary side frame, so that the first and second sub-supplementary side frames are fixed at any extended position, thereby realizing stepless adjustment of the overall length of the supplementary side frame.

[0082] In this embodiment, the smoke generator 300 is located between the two filters 400. The smoke generator 300 includes a cigarette lighter 303, which is used to ignite the smoke sample 301. The cigarette lighter 303 is an electronic cigarette lighter, which can precisely control the cigarette lighting process, ensure the stable combustion of the smoke sample 301, provide a stable smoke source, and reduce experimental errors caused by uneven cigarette lighting. In addition, this built-in cigarette lighter eliminates the need to search for a cigarette lighter at the demonstration site, making it more convenient.

[0083] In this embodiment, please refer to the reference. Figure 7 The smoke generator 300 includes a main body (not marked in the figure), the main body having an ash collection cavity 304; a fixing member 302 for clamping and fixing a smoke sample 301, the fixing member 302 being assembled on the main body and located at the edge of the ash collection cavity 304; and a cigarette lighter 303 being assembled on the main body.

[0084] In this embodiment, the integrated design of the cigarette lighter 303 improves the safety of the device, making it particularly suitable for occasions requiring long-term stable operation.

[0085] In this embodiment, please refer to Figure 7 The main component includes: a base 308; and a functional part 309. The functional part 309 is detachably connected to the base 308, which makes the smoke generator 300 highly modular, convenient for production and maintenance. Users can replace different functional parts 309 as needed, which enhances the applicability and flexibility of the device.

[0086] In this embodiment, the functional unit 309 has the ash collection cavity 304, and the fixing member 302 and the cigarette lighter 303 are both assembled in the functional unit 309. The functional unit 309 integrates the functions of ash collection, clamping and cigarette lighting, making the structure of the smoke generator 300 more compact, reducing space occupation, and improving the overall performance and efficiency of the device. Furthermore, the centralized design makes it easier for users to operate and maintain the smoke generator 300, reducing the operational complexity caused by the dispersion of functions.

[0087] In this embodiment, after the base 308 and the functional part 309 are connected, a positioning groove 306 is formed on the side wall of the main body. The positioning groove 306 is used for accurate positioning connection with the housing part 200, preventing installation deviation of the smoke generator 300.

[0088] In this embodiment, the base 308 has a handle groove 305. The design of the handle groove 305 makes it easy for users to grip the base 308 to perform installation, disassembly or cleaning operations, which improves the convenience of operation, reduces fatigue caused by inconvenient operation, and enhances the comfort of user operation.

[0089] In this embodiment, the base 308 also has a charging port 307 for charging the cigarette lighter 303. The design of the charging port 307 makes it easy to charge the cigarette lighter 303, ensuring the power supply of the cigarette lighter 303 during long-term use and reducing the failure to light cigarettes due to battery depletion. In addition, the design of the charging port 307 allows users to choose to use batteries or external power sources as needed, enhancing the flexibility and applicability of the device.

[0090] In this embodiment, the fastener 302 is detachably connected to the main body, making the replacement and maintenance of the fastener 302 more convenient. Users can quickly replace different types of the fastener 302 to adapt to different smoke samples 301.

[0091] In this embodiment, the fixing member 302 is a clamping member, and the side wall of the ash collection cavity 304 near the fixing member 302 has a hole for inserting the smoke sample 301. After one end of the smoke sample 301 is inserted into the hole, the fixing member 302 fixes the smoke sample 301 in place.

[0092] In other embodiments, the fastener has at least two elastic tongues that extend from the sidewall of the ash collection cavity 304 toward the axis (X) of the hole and are evenly distributed circumferentially; the free ends of the elastic tongues are pushed outward when the smoke sample 301 is inserted and apply radial friction force to the outer periphery of the smoke sample 301, thereby detachably fixing the smoke sample 301 in the hole.

[0093] In this embodiment, the cigarette lighter 303 is detachably connected to the main body, making it easier to replace and maintain the cigarette lighter 303. Users can quickly replace different types of cigarette lighters 303 to adapt to different experimental and demonstration needs.

[0094] In this embodiment, after the cigarette lighter 300 is assembled into the housing 400, the smoke sample 301 of the cigarette lighter 300 is directly exposed into the receiving cavity 201.

[0095] In some embodiments, the base 308 is provided with a rotatable roller shaft, and the sealing film is wound around the roller shaft. Pulling the free end of the sealing film makes it cover and seal the opening of the ash collection cavity 304, so that the smoke sample 301 burns for a while, making it easier to collect more smoke, thus making the filtration effect of the filter element 403 clearer and more intuitive. In addition, the roller shaft has a built-in torsion spring, so that the free end of the sealing film has an automatic tendency to rotate back. The free end of the sealing film is provided with a handle, and the base and the side opposite to where the roller shaft is provided are provided with a fixing torque that matches the handle.

[0096] The sealing membrane described here is a flame-retardant material.

[0097] In some embodiments, the base 308 is provided with a storage opening located on one side of the ash storage cavity 304; a sliding door is slidably installed in the base 308 and covers the ash storage cavity 304, and a rack is provided on the back of the sliding door; a micro motor is fixed in the base 308, and a gear meshing with the rack is installed on the output shaft of the micro motor; when the micro motor rotates forward, the gear drives the rack to move the sliding door horizontally and fully enter the storage opening to open the ash storage cavity 304; when the micro motor rotates in reverse, the sliding door slides out in the opposite direction and returns to above the ash storage cavity 304 to seal the ash storage cavity 304.

[0098] Although the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. An air filtration demonstration device, characterized by, include: A housing component having a receiving cavity, at least a portion of which is transparent; A smoke generator is provided, which contains a smoke sample that generates smoke. In the operating state of the air filtration demonstration device, the smoke sample is placed inside the receiving cavity. At least two filter elements are provided, each of which can be fitted with a filter cartridge, and the filter cartridge is placed in the receiving cavity. Each of the filter elements can independently filter the smoke generated by the smoke sample. At least two smoke exhaust components are provided, which are used to exhaust the smoke filtered by the filter to the outside of the housing, and the smoke exhaust components are respectively corresponding to the filter.

2. The air filtration demonstration device of claim 1, wherein, The filter element is plate-shaped, and when installed, the angle between it and the horizontal plane ranges from 30° to 90°.

3. The air filtration demonstration device of claim 2, wherein, The filter element is plate-shaped and assembled in the housing component at an angle to the horizontal plane, with the angle between the sidewall of the filter element and the horizontal plane ranging from 30° to 90°.

4. The air filtration demonstration device of claim 3, wherein, The angle between the filter element and the horizontal plane is the same as the angle between the side wall of the filter element and the horizontal plane.

5. The air filtration demonstration device of claim 1, wherein, The number of filter elements is two, and the two filter elements are arranged on opposite sides of the housing; the distance between the tops of the oppositely arranged filter elements is smaller than the distance between the bottoms.

6. The air filtration demonstration device of claim 1, wherein, The filter element is detachably connected to the housing element.

7. The air filtration demonstration device as described in claim 6, characterized in that, The filter element is slidably connected to or snap-fitted to the housing element.

8. The air filtration demonstration device of claim 1, wherein, The smoke exhaust component is either fixedly connected to or detachably connected to the side wall of the housing component.

9. The air filtration demonstration device of claim 1, wherein, The housing component has a trapezoidal or rectangular structure.

10. The air filtration demonstration device of claim 1, wherein, There is a buffer gap between the smoke exhaust component and the filter component.

11. The air filtration demonstration device of claim 1, wherein, The housing includes a top surface located above the smoke generator and a side surface connected to the top surface. The top surface and the side surface together form the receiving cavity, which has an opening. The smoke generator is detachably covered by the opening. After the filter element of the filter is placed in the receiving cavity, the side surface near the filter is distributed parallel to the filter. The smoke exhaust element is distributed parallel to the corresponding filter.

12. The air filtration demonstration device of claim 11, wherein, The top surface includes a main surface parallel to the horizontal plane and a first folded surface and a second folded surface located on both sides of the main surface. There is a first included angle between the first folded surface and the main surface, and there is a second included angle between the second folded surface and the main surface. The first folded surface and the second folded surface each have an insertion port that passes through the receiving cavity. The filter element is placed in the receiving cavity through the insertion port. The insertion port and the filter element form a sealed connection. The number of insertion ports corresponds one-to-one with the number of filter elements.

13. The air filtration demonstration device of claim 12, wherein, It also includes handles located on both sides of the top surface.

14. The air filtration demonstration device as described in claim 1, characterized in that, The smoke generator is located at the lower end of the housing.

15. The air filtration demonstration device of claim 1, wherein, The smoke generator is located between the filter elements. The smoke generator includes a cigarette lighter for igniting the smoke sample. The cigarette lighter is an electronic cigarette lighter.

16. The air filtration demonstration device of claim 1, wherein, The smoke exhaust component includes: a fan.

17. The air filtration demonstration device of claim 1, wherein, The surface of the housing on which the smoke exhaust component is installed is arranged at an angle to the horizontal plane where the bottom of the housing is located, and the surface of the housing on which the smoke exhaust component is installed is perpendicular to the visual observation direction.

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