Inflammability testing device for closed space of spray aerosol
By introducing a ignition source loading platform and an aerosol bottle placement platform into the flammability testing device for enclosed spaces, the problems of test deviations caused by inaccurate candle height control and frequent candle replacements were solved, thereby improving the accuracy and efficiency of the test.
Patent Information
- Application Number
- CN202520201797.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-10
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-02-10
AI Technical Summary
In existing technologies, the burning of candles as a heat source in a closed container causes height variations that are difficult to control, leading to deviations in experimental conclusions. Furthermore, frequent candle replacements increase costs and the workload of operators, reducing testing efficiency.
A device for testing the flammability of aerosol sprays in a confined space was designed. The device uses a ignition source loading platform, which includes a tray, a height measuring baffle, and a lifting mechanism. The height of the ignition source is adjusted by the lifting mechanism. Combined with the telescopic scale and indicator on the aerosol bottle placement platform, the nozzle direction is ensured to be accurate, avoiding frequent candle replacements.
It improves the accuracy and efficiency of testing, reduces the difficulty of operation, simplifies the operation procedure, avoids the problem of dust accumulation in the thread groove, and ensures the reliability and convenience of testing.
Smart Images
Figure CN223966532U_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aerosol enclosed space testing technology, specifically relating to a device for testing the flammability of spray aerosols in enclosed spaces, and more particularly to a device for testing the flammability of spray aerosols in enclosed spaces. Background Technology
[0002] The testing apparatus typically consists of a sealed container and an ignition source. During the test, a candle is required as an ignition source inside the cylindrical container. According to relevant requirements, the height of the candle needs to be controlled between 80mm and 100mm. When the candle height is too low or too high, the density of the flammable substance sprayed from the aerosol is greater or lower than that of air, affecting the contact time between the aerosol and the ignition source, thereby indirectly affecting the deflagration time or deflagration density of the aerosol, and ultimately affecting the determination of the flammability of the aerosol.
[0003] However, since the candle is the heat source, its height changes due to the burning of the candle in a closed container, making it impossible to determine the range of the candle's height. This can lead to deviations in the experimental results. In addition, frequent candle replacements not only increase the cost of the experiment but also greatly increase the workload of the operators and reduce the efficiency of the test.
[0004] Therefore, ensuring test results while avoiding frequent candle replacements is a technical problem that urgently needs to be solved in this field.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention
[0006] This disclosure provides at least one device for testing the flammability of a spray aerosol in a confined space.
[0007] In a first aspect, embodiments of this disclosure provide a flammability testing device for aerosol sprays in enclosed spaces, comprising: a base plate having a placement position for placing an aerosol bottle; a cylindrical container adapted to hold an ignition source and fixed to the base plate; wherein the cylindrical container has a first end cap and a second end cap arranged in parallel, the first end cap being disposed on the side near the aerosol bottle; and a circular hole is formed in the first end cap; an ignition source loading platform is provided inside the cylindrical container, the ignition source loading platform including a support plate, a height measuring baffle, and a lifting mechanism adapted to lift the ignition source; wherein the height measuring baffle and the lifting mechanism are mounted on the support plate, and the height measuring baffle is disposed on the side near the first end cap.
[0008] In one optional embodiment, the height measuring baffle includes an upright section and an inclined section; wherein the inclined section is inclined toward the lifting mechanism.
[0009] In one optional embodiment, the side of the height measuring baffle facing the lifting mechanism is provided with a height scale.
[0010] In one optional embodiment, the lifting mechanism includes a boss, a threaded post, and a rotating cylinder; a circular recess is provided at the center of the boss, the threaded post is fixed at the center of the circular recess, and the height of the threaded post is not higher than the depth of the circular recess; the height of the threaded post is h, and h≤100mm; the inner wall of the rotating cylinder is screwed onto the threaded post by threads; the rotating cylinder is suitable for supporting the ignition source.
[0011] In one optional embodiment, a partition is provided inside the rotating drum; wherein the partition divides the rotating drum into an adjustable section and a supporting section; the inner diameter of the supporting section is 40 mm.
[0012] In one optional embodiment, the inner wall of the height adjustment section is provided with a threaded groove, a portion of the height adjustment section extends into the circular recess, and the outer wall of the height adjustment section abuts against the inner wall of the circular recess.
[0013] In one alternative embodiment, the inner wall of the supporting section is provided with an elastic pressure ring; wherein the inner wall of the elastic pressure ring is adapted to abut against the outer wall of the ignition source.
[0014] In one optional embodiment, the diameter of the circular hole is 50 mm, and the circular hole is aligned with the aerosol bottle placement platform; a telescopic scale is fixed on the aerosol bottle placement platform; and a pointer is provided on the nozzle of the aerosol bottle; wherein the cross-section of the pointer is an isosceles right triangle with a hypotenuse of 1 cm.
[0015] Secondly, this disclosure also provides a device for testing the flammability of a spray aerosol in a confined space, characterized in that an aerosol bottle placement platform and a cylindrical container are located on one side of the aerosol bottle placement platform and include a circular hole aligned with the direction of the aerosol bottle placement platform; an ignition source loading platform is located inside the cylindrical container and includes a height measuring baffle and a lifting mechanism suitable for lifting the ignition source; wherein the height measuring baffle is located between the circular hole and the lifting mechanism.
[0016] The lifting mechanism includes a boss, a threaded post, and a rotating drum; a circular recess is provided at the center of the boss, the threaded post is fixed at the center of the circular recess, and the height of the threaded post is not higher than the depth of the circular recess; the height of the threaded post is h, and h≤100mm; the inner wall of the rotating drum is screwed onto the threaded post; the rotating drum is suitable for supporting the ignition source.
[0017] The beneficial effects of this invention are that it provides a device for testing the flammability of aerosols in enclosed spaces and its method of use. By setting up a ignition source loading platform, it can not only solve the problem of frequent ignition replacement, but also avoid the ignition being directly extinguished, thereby improving test accuracy, reducing the difficulty of test adjustment, facilitating operation, and improving test efficiency. By setting up a rotating drum, it can adjust the height while avoiding external leakage of the threads, thus effectively solving the problem of dust accumulation in the thread grooves, reducing the difficulty of height adjustment, and simplifying the operation procedure.
[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.
[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 A perspective view of a device for testing the flammability of a spray aerosol in a confined space, provided in an embodiment of this disclosure;
[0022] Figure 2 A perspective view of a cylindrical vessel provided in an embodiment of this disclosure;
[0023] Figure 3 The cylindrical vessel and base plate provided in the embodiments of this disclosure are as follows: Figure 1 Cross-sectional view at section AA;
[0024] Figure 4 A perspective view of the ignition source loading platform and the ignition source provided in an embodiment of this disclosure;
[0025] Figure 5 A cross-sectional view of the ignition source loading platform and the ignition source provided in an embodiment of this disclosure;
[0026] Figure 6 A perspective view of the rotating drum provided for an embodiment of this disclosure.
[0027] In the picture:
[0028] 1. Aerosol bottle placement stand; 11. Telescopic scale; 12. Directional indicator;
[0029] 2. Cylindrical vessel; 21. First end cap; 22. Second end cap; 23. Round hole
[0030] 3. Aerosol cans;
[0031] 4. Fire source loading platform; 41. Pallet; 42. Height measuring baffle; 421. Vertical section; 422. Inclined section; 43. Lifting mechanism; 431. Boss; 432. Rotary drum; 433. Circular recess; 434. Threaded column; 435. Height adjustment section; 436. Lifting section; 437. Partition; 438. Threaded groove; 439. Elastic pressure ring;
[0032] 5. Ignition source;
[0033] 6. Base plate. Detailed Implementation
[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.
[0036] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
[0037] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise clearly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.
[0038] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0039] Research has revealed the following drawbacks of existing technologies: In related technologies, the testing device typically consists of a sealed container and a ignition source. During the test, a candle is required as an ignition source in a cylindrical container. According to relevant requirements, the height of the candle needs to be controlled between 80mm and 100mm. When the candle height is too low or too high, the density of the flammable substance sprayed from the aerosol is greater or lower than that of air, affecting the contact time between the aerosol and the ignition source. This indirectly affects the deflagration time or deflagration density of the aerosol, ultimately affecting the determination of the flammability of the aerosol.
[0040] However, since the candle is the heat source, its height changes due to the burning of the candle in a closed container, making it impossible to determine the range of the candle's height. This can lead to deviations in the experimental results. In addition, frequent candle replacements not only increase the cost of the experiment but also greatly increase the workload of the operators and reduce the efficiency of the test.
[0041] Therefore, ensuring test results while avoiding frequent candle replacements is a technical problem that urgently needs to be solved in this field.
[0042] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0043] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0044] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0045] like Figure 1 and Figure 2 As shown, Figure 1 A perspective view of a device for testing the flammability of a spray aerosol in a confined space, provided in an embodiment of this disclosure; Figure 2 This is a partial cross-sectional view of a device for testing the flammability of a spray aerosol in a confined space, provided as an embodiment of this disclosure. Please refer to... Figure 1 and combined Figure 2 Some embodiments provide a device for testing the flammability of a spray aerosol in a confined space, including: a base plate 6, a cylindrical container 2, an aerosol bottle 3, a ignition source loading platform 4, and an ignition source 5. The base plate 6 is divided into two areas, one area for placing the aerosol bottle 3 and the other area for fixing the cylindrical container 2, so that the aerosol bottle 3 can spray aerosol into the cylindrical container 2. The ignition source loading platform 4 is used to lift the ignition source 5 to a certain height.
[0046] Please continue reading. Figure 1 ,like Figure 1 As shown, during each experiment, the aerosol bottle 3 needs to be installed on the aerosol bottle placement platform 1, and the nozzle of the aerosol bottle 3 needs to be aligned with the 50mm diameter opening on the cylindrical container 2. In addition, during the experiment, the distance between the nozzle of the aerosol bottle 3 and the circular hole 23 needs to be equal to 35mm. Due to the lack of a suitable orientation calibration function, the spray direction will always deviate during each experiment, which may even affect the experimental conclusion. The direction needs to be adjusted many times to complete the experiment, which affects efficiency and damages the instrument.
[0047] Therefore, in at least one embodiment, a telescopic scale 11 is fixed on the aerosol bottle placement platform 1. The telescopic range of the scale 11 is less than or equal to 35mm; and the width of the scale 11 is 30mm. Furthermore, the scale 11 is made of rigid material or other corrosion-resistant, rust-resistant, high-temperature resistant, and easy-to-clean material. A pointer 12 is provided on the nozzle of the aerosol bottle 3; wherein the cross-section of the pointer 12 is an isosceles right triangle with a hypotenuse of 1cm.
[0048] Alternatively, the telescopic scale 11 has a triangular cross-section, meaning it is a scale with graduations on two inclined planes. This design facilitates the operator's observation of the distance between the nozzle and the circular hole 23 from both the front and the back.
[0049] Please continue reading. Figure 1 And in conjunction with the diagram. For example... Figure 1 and Figure 2 As shown, in at least one embodiment, the cylindrical container 2 has a ignition source mounting platform 4 adapted to hold an ignition source 5, and the ignition source mounting platform 4 is fixed on the aerosol bottle placement platform 1. The cylindrical container 2 has a first end cap 21 and a second end cap 22 arranged in parallel. The first end cap 21 and the second end cap 22 allow the interior of the cylindrical container to be relatively sealed. The first end cap 21 is located on the side closest to the aerosol bottle 3. A circular hole 23 is provided on the first end cap 21; the circular hole 23 is used for aerosol to enter the container, that is, the aerosol inlet, and the diameter of the circular hole 23 is 50mm. The cylindrical container 2 contains the ignition source mounting platform 4, and the second end cap 22 is detachably mounted on the opposite side of the first end cap 21. The candle can be replaced and the candle height adjusted by removing the second end cap 22.
[0050] Please continue reading. Figure 2 and combined Figure 3 , Figure 3 This is a perspective view of the ignition source loading platform and ignition source provided in an embodiment of this disclosure. Figures 2 to 3 As shown, in order to solve the problem of frequent candle replacement, in at least one embodiment, the fire source loading platform 4 includes a tray 41, a height measuring baffle 42 and a lifting mechanism 43; the height measuring baffle 42 is used to prevent the vapor from extinguishing the fire source; the lifting mechanism 43 can change the height of the candle, that is, the ignition source 5, so that the height of the fire source is between 80mm and 100mm.
[0051] Please continue reading. Figure 3 ,like Figure 3 As shown, in at least one embodiment, the composition of the fire source loading platform 4 is described in detail below. The tray 41 is fixedly connected to the inner wall of the cylindrical container 2; the height measuring baffle 42 and the lifting mechanism 43 are installed on the tray 41, and the height measuring baffle 42 is located on the side close to the first end cover 21; the lifting mechanism 43 is adapted to lift the ignition source 5.
[0052] Please continue reading. Figure 3 ,like Figure 3 As shown, in at least one embodiment, the height measuring baffle 42 includes an upright section 421 and an inclined section 422; wherein the inclined section 422 is inclined toward the lifting mechanism 43. A height scale is provided on the side of the height measuring baffle 42 facing the lifting mechanism 43, and the height scale and the telescopic scale 11 are made of the same material.
[0053] Please continue reading. Figure 3 and combined Figure 4 , Figure 4 This is a cross-sectional view of the lifting mechanism and ignition source provided in an embodiment of this disclosure. Figures 3 to 4 As shown, in at least one embodiment, the lifting mechanism 43 includes a boss 431, a threaded post 434, and a rotating drum 432; a circular recess 433 is provided at the center of the boss 431, the threaded post 434 is fixed at the center of the circular recess 433, and the height of the threaded post 434 is not higher than the depth of the circular recess 433; the height of the threaded post 434 is h, h≤100mm; the inner wall of the rotating drum 432 is screwed onto the threaded post 434 by threads.
[0054] It should be further explained that during the rotation of the drum 432, a portion of it is always inside the circular recess 433. This is to prevent the threaded post 434 from leaking out, thereby preventing the problem of soot adhering to the threaded groove 438 and causing blockage during the aerosol test.
[0055] In addition, the rotating drum 432 is suitable for supporting the ignition source 5, and rotating the rotating drum 432 adjusts the height of the ignition source 5. A partition 437 is provided inside the rotating drum 432; the partition 437 divides the rotating drum 432 into a height adjustment section 435 and a supporting section 436; the inner diameter of the supporting section 436 is 40mm.
[0056] Specifically, a threaded groove 438 can be provided on the inner wall of the height adjustment section 435, a part of the height adjustment section 435 extends into the circular recess 433, and the outer wall of the height adjustment section 435 abuts against the inner wall of the circular recess 433.
[0057] The inner wall of the supporting section 436 is provided with an elastic pressure ring 439. The elastic pressure ring 439 is resistant to high temperature and corrosion and is used to squeeze the candle to make it stand stably upright in the upper half of the rotating cylinder 432. The inner wall of the elastic pressure ring 439 is adapted to abut against the outer wall of the ignition source 5.
[0058] On the other hand, at least one embodiment provides a flammability testing device for a closed space of a spray aerosol, including an aerosol bottle placement platform 1, a cylindrical container 2, located on one side of the aerosol bottle placement platform 1 and including a circular hole 23, with the circular hole 23 aligned with the direction of the aerosol bottle placement platform 1; and an ignition source loading platform 4, located inside the cylindrical container 2, including a height measuring baffle 42 and a lifting mechanism 43 suitable for lifting the ignition source 5.
[0059] The height measuring baffle 42 is located between the circular hole 23 and the lifting mechanism 43.
[0060] The lifting mechanism 43 includes a boss 431, a threaded post 434, and a rotating drum 432; a circular recess 433 is provided at the center of the boss 431, the threaded post 434 is fixed at the center of the circular recess 433, and the height of the threaded post 434 is not higher than the depth of the circular recess 433; the height of the threaded post 434 is h, and h≤100mm; the inner wall of the rotating drum 432 is screwed onto the threaded post 434; the rotating drum 432 is suitable for supporting the ignition source 5.
[0061] In summary, by placing the aerosol bottle 3 on the aerosol bottle placement platform 1, observing the data on the telescopic scale 11 and the direction of the pointer 12, and adjusting the height of the ignition source 5 by rotating the rotating drum 432, the aerosol bottle 3 can finally spray the aerosol agent into the container through the round hole 23. The ignition source loading platform 4 not only solves the problem of frequently changing the ignition source 5, but also prevents the ignition source 5 from being directly extinguished, improving test accuracy, reducing the difficulty of test adjustment, facilitating operation, and improving test efficiency. By setting the rotating drum 432, the height can be adjusted while preventing the threaded post 434 from leaking out, thereby effectively solving the problem of dust accumulation in the threaded groove 438, reducing the difficulty of height adjustment, and simplifying the operation procedure.
[0062] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.
[0063] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.
[0064] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A device for testing the flammability of a spray aerosol in a confined space, characterized in that, include: The base plate (6) has a placement position for placing the aerosol bottle (3); A cylindrical vessel (2) suitable for holding an ignition source (5) and fixed to a base plate (6); wherein The cylindrical container (2) has a first end cap (21) and a second end cap (22) arranged in parallel, the first end cap (21) being located on the side near the aerosol bottle (3); and A circular hole (23) is provided on the first end cap (21); The cylindrical container (2) is provided with a fire source loading platform (4), which includes a support plate (41), a height measuring baffle (42), and a lifting mechanism (43) suitable for lifting the ignition source (5). The height measuring baffle (42) and the lifting mechanism (43) are installed on the support plate (41), and the height measuring baffle (42) is located on the side close to the first end cover (21).
2. The flammability testing device for aerosol sprays in a confined space as described in claim 1, characterized in that, The height measuring baffle (42) includes an upright section (421) and an inclined section (422); wherein The inclined section (422) is inclined toward the lifting mechanism (43).
3. The flammability testing device for aerosol sprays in a confined space as described in claim 2, characterized in that, The height measuring baffle (42) has a height scale on the side facing the lifting mechanism (43).
4. The flammability testing device for aerosol sprays in a confined space as described in claim 3, characterized in that, The lifting mechanism (43) includes a boss (431), a threaded column (434), and a rotating drum (432); A circular recess (433) is provided at the center of the boss (431), and the threaded post (434) is fixed at the center of the circular recess (433), and the height of the threaded post (434) is not higher than the depth of the circular recess (433). The height of the threaded post (434) is h, and h≤100mm; The inner wall of the rotating drum (432) is screwed onto the threaded post (434) by threads; The rotating drum (432) is adapted to support the ignition source (5).
5. The flammability testing device for aerosol sprays in a confined space as described in claim 4, characterized in that, A partition plate (437) is provided inside the rotating drum (432); wherein The partition (437) divides the rotating drum (432) into an adjusting section (435) and a supporting section (436); The inner diameter of the supporting section (436) is 40 mm.
6. The flammability testing device for aerosol sprays in a confined space as described in claim 5, characterized in that, The inner wall of the height adjustment section (435) is provided with a threaded groove (438), a part of the height adjustment section (435) extends into the circular recess (433), and the outer wall of the height adjustment section (435) abuts against the inner wall of the circular recess (433).
7. The flammability testing device for aerosol sprays in a confined space as described in claim 6, characterized in that, The inner wall of the supporting section (436) is provided with an elastic pressure ring (439); wherein The inner wall of the elastic pressure ring (439) is adapted to abut against the outer wall of the ignition source (5).
8. The flammability testing device for aerosol sprays in a confined space as described in claim 1, characterized in that, The diameter of the circular hole (23) is 50 mm, and the circular hole (23) is aligned with the aerosol bottle placement platform (1); A telescopic scale (11) is fixed on the aerosol bottle placement platform (1); and The nozzle of the aerosol bottle (3) is equipped with a pointer (12); wherein The cross-section of the pointer (12) is an isosceles right triangle with a hypotenuse of 1 cm.
9. A device for testing the flammability of a spray aerosol in a confined space, characterized in that, Aerosol bottle placement platform (1), A cylindrical container (2) is located on one side of the aerosol bottle placement platform (1) and includes a circular hole (23) with the circular hole (23) aligned with the direction of the aerosol bottle placement platform (1). The fire source loading platform (4) is located inside the cylindrical container (2) and includes a height measuring baffle (42) and a lifting mechanism (43) suitable for lifting the ignition source (5); The height measuring baffle (42) is located between the circular hole (23) and the lifting mechanism (43).
10. The flammability testing device for aerosol sprays in a confined space as described in claim 9, characterized in that, The lifting mechanism (43) includes a boss (431), a threaded column (434), and a rotating drum (432); A circular recess (433) is provided at the center of the boss (431), and the threaded post (434) is fixed at the center of the circular recess (433), and the height of the threaded post (434) is not higher than the depth of the circular recess (433). The height of the threaded post (434) is h, and h≤100mm; The inner wall of the rotating drum (432) is screwed onto the threaded post (434) by threads; The rotating drum (432) is adapted to support the ignition source (5).