Combustible powder cold light firework effect generating device

Abstract

The utility model discloses a combustible powder cold light firework effect generating device which comprises a powder storage device and further comprises a heating body, a heating cavity of the heating body is provided with a powder channel, and the powder channel is provided with a wind power assembly for supplying air into the powder channel. The powder channel is provided with a high-temperature friction heat generating mechanism for enabling the combustible powder to collide with the inner wall of the powder channel; the combustible powder in the powder storage device passes through the powder channel based on wind power to be heated and ignited. When combustible powder flows in a powder channel provided with a high-temperature friction heat generating mechanism based on wind power, powder particle flow performs reversing motion, so that the friction coefficient and normal pressure between powder particles and the wall of the channel are greatly increased, and local high-temperature friction heat is generated. Therefore, the heating body only needs to provide a relatively low heating temperature, the combustible particles can be reliably ignited to be sprayed out under the cooperation of local high-temperature friction heat, and the cold light firework effect formed by the star body effect of combustible powder combustion is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of cold light fireworks effect generating device using combustible powder. BACKGROUND

[0002] Traditional cold light fireworks (cold flame) are ignited by gunpowder to excite combustible powder such as metal or metal oxide mixed therein, so as to produce star effect.

[0003] In the prior art, to replace the traditional gunpowder launch composition of fireworks, eliminate safety hazards without gunpowder, many devices simulating cold light fireworks effect have been developed in the industry. Combustible powder ignition and jet composition cold light fireworks emission effect, due to its high safety, has been widely used. In order to realize the ignition of combustible powder, the prior art can be summarized as follows:

[0004] I. Powder preheating + ignition mode: such as CN105241316A, CN105258576A, CN105371707A, CN105854317A, CN107121022A, etc. Chinese patent documents disclose a cold flame jetting device. In this series of patent documents, heating outside the feeding pipe wall is the key factor for powder excitation and ignition to realize cold flame jetting. Other similar patent documents, such as "a color cold fireworks spraying and control device - CN106767189A", use "heating coil heating"; "a heating device and stage cold flame equipment - CN216482556U", uses "a heating module is sleeved on the outer wall of the pipe body conveying metal powder"; "an environmentally friendly fireworks machine without gunpowder - CN109000519A", "the outer surface of the feeding pipe is further provided with a heating ring and a heat preservation sleeve ring from inside to outside". Similar powder excitation and ignition means are used.

[0005] II. Electric arc excitation ignition based on plasma generator: such as CN119687731A "a multi-flame color powder combustion jetting device".

[0006] III. Pressure fuel jet combustion ignition based on Bernoulli principle: such as CN221945035U (authorized publication number) discloses a handheld fireworks setting-off device based on powder combustion jetting; CN222068500U (authorized publication number) discloses a fireworks device based on powder combustion jetting.

[0007] The drawback of existing technologies is that in order to ignite and excite metal or metal oxide powder to produce the star effect of cold light fireworks, a high heating temperature is required, which leads to a series of problems: such as high energy consumption of the device, especially high ineffective energy consumption; or a large number of necessary components such as igniter, plasma generator, and pressure fuel assembly, making the structure relatively complex and difficult to miniaturize; or high energy and flammability make safety lacking. Utility Model Content

[0008] To address the aforementioned drawbacks, the technical problem to be solved by this utility model is to provide a device that utilizes combustible powder to generate a cold light fireworks effect, which can effectively reduce the heating temperature used to ignite the combustible powder.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is a combustible powder cold light fireworks effect generating device, including a powder storage device, characterized in that it further includes a heating body, the heating chamber of the heating body has a powder channel, the powder channel is provided with a wind force component to send air into the powder channel; the powder channel is provided with a high-temperature friction heat generation mechanism that causes the combustible powder to collide with the inner wall of the powder channel; the combustible powder in the powder storage device is heated and ignited by the wind force passing through the powder channel.

[0010] The heating method of the heating element can be selected from one of the following heating methods: resistance heating, induction heating, microwave heating, thermal radiation heating, and thermal conduction heating.

[0011] Preferably, the high-temperature frictional heat generation mechanism is a curved or spiral powder channel.

[0012] Preferably, the heating chamber is a tube structure located inside the heating body, and the inner cavity of the tube is a powder channel.

[0013] Preferably, the tube structure is selected from spiral tube structure, disc tube structure, L-shaped tube structure, and U-shaped disc tube structure.

[0014] Preferably, the powder storage device feeds combustible powder into the powder channel via a screw conveyor mechanism.

[0015] Preferably, the high-temperature frictional heat generation mechanism is a linear powder channel, and the air delivery direction of the wind power component and / or the feeding direction of the powder storage device intersects the axial direction of the powder channel at an angle.

[0016] Preferably, the high-temperature frictional heat generation mechanism is a linear powder channel, and a flow disruptor is provided inside the powder channel to change the flow direction of the combustible powder. Further, the flow disruptor is a protrusion, baffle, or guide vane disposed within the powder channel.

[0017] Preferably, the turbulence diffuser consists of several arc-shaped guide vanes disposed within the powder channel.

[0018] Preferably, several stages of baffles are arranged before and after the powder channel.

[0019] The beneficial effect of this invention lies in the fact that when combustible powder flows in a powder channel equipped with a high-temperature frictional heat generation mechanism, the powder particle flow undergoes a reversal motion due to wind power. This significantly increases the friction coefficient and normal pressure between the powder particles and the channel wall, resulting in the generation of localized high-temperature frictional heat. Therefore, the heating element only needs to provide a relatively low heating temperature to reliably ignite the combustible particles under the synergy of localized high-temperature frictional heat, producing a cold-light firework effect composed of the star-like effect of combustible powder combustion.

[0020] Meanwhile, the powder channel equipped with a high-temperature frictional heat generation mechanism helps to extend the heating path and heating time of combustible powder within the same space, and optimizes the heating efficiency, thus laying the foundation for reliable operation under miniaturization of the device.

[0021] Moreover, it can directly heat and ignite combustible powder, eliminating the need for necessary ignition components in existing technologies; it also eliminates the need for preheating, plasma generators, pressure fuel components, etc., making the device structure relatively simple and facilitating product miniaturization.

[0022] Of course, any product implementing this utility model does not necessarily need to achieve all the advantages of the preferred solutions described above at the same time.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0030] Figure 2 This is a schematic diagram of the gravity feeding mechanism.

[0031] Figure 3 This is a schematic diagram of the overall structure of Example 2.

[0032] Figure 4 This is a schematic diagram of the overall structure of Example 3.

[0033] Figure 5 This is a schematic diagram of another type of disc tube construction.

[0034] Figure 6 This is a schematic diagram of the structure of Example 4.

[0035] Figure 7 This is a schematic diagram of the structure of Example 5.

[0036] Figure 8 This is a schematic diagram of the structure of Example 6.

[0037] Figure 9 This is a schematic diagram of the structure of Example 7.

[0038] Figure 10 This is a schematic diagram of the structure of Example 8.

[0039] Figure 11 This is a schematic diagram of the structure of Example 9.

[0040] Figure 12 This is a schematic diagram of the structure of Example 10.

[0041] Figure 13 This is a schematic diagram of the structure of Example 11.

[0042] Figure 14 This is a schematic diagram of the structure of Example 12.

[0043] Figures 15 to 18 This is a schematic diagram showing the structure of different numbers of guide vanes.

[0044] Figure 19 This is a schematic diagram of the structure of Example 13.

[0045] Figures 20 to 24 This is a schematic diagram of another implementation method. Detailed Implementation

[0046] Example 1: See Appendix Figure 1 This describes a specific structure of the present invention. The combustible powder cold light fireworks effect generating device includes a housing 1, a powder storage device 2, and a heating element 8. In this example, the heating element 8 uses a resistance heating method composed of spirally distributed resistance wires.

[0047] The heating chamber is formed by the helical hollow cavity of the spirally distributed resistance wires. In other embodiments, the heating element 8 may also employ electromagnetic heating using an electromagnetic induction coil. The heating chamber of the heating element 8 has a curved powder channel 10.

[0048] In this example, the heating chamber is a tubular structure located within the heating body 8, and the inner cavity of the tube is a powder channel 10. The tubular structure in this example is a U-shaped coil. The inner cavity of the U-shaped coil is the powder channel 10. The curved U-shaped coil structure of the powder channel 10 is a high-temperature frictional heat generation mechanism that causes the combustible powder to collide with the inner wall of the powder channel 10.

[0049] In the example, the resistance wire constituting the heating element 8 is arranged around the outer wall of the U-shaped coil.

[0050] The wind turbine 7 is connected to the first port of the U-shaped coil and delivers air into the powder channel 10 formed by the inner cavity of the U-shaped coil.

[0051] In the example, the powder storage device 2 feeds combustible powder into the powder channel 10 via a screw conveyor mechanism 3. The screw conveyor mechanism 3 is connected to the discharge port of the powder storage device 2. A motor 4 is connected to the screw of the screw conveyor mechanism 3; turning on the motor 4 will convey the combustible powder in the powder storage device 2 into the powder channel 10. In other embodiments, the screw of the screw conveyor mechanism 3 can also be driven manually or by other automatic means. In other embodiments, a gravity-feeding mechanism can also be used, such as... Figure 2 As shown, the powder storage device 2, located at a high position, is connected to the powder channel 10 via a feeding pipe 20. The powder falls into the powder channel 10 by its own weight. A hopper switch 21 may also be provided.

[0052] Based on the wind power provided by the wind component 7, the combustible powder in the powder storage device 2 is heated and ignited from the powder channel 10, and then ejected from the second port of the U-shaped coil - the ejection port 9, presenting a cold light firework effect composed of a large number of star-like effects of combustible powder burning.

[0053] Regarding combustible powders, the ignition temperatures of metal particles are as follows: Titanium powder with a mesh size of 1-100 mesh has an ignition temperature of approximately 400-700℃; titanium powder with a mesh size of 120-400 mesh has an ignition temperature of approximately 250-500℃; iron powder with a mesh size of 40-100 mesh has an ignition temperature of approximately 600-1000℃; iron powder with a mesh size of 120-400 mesh has an ignition temperature of approximately 400-700℃; iron powder with a mesh size of 500-1000 mesh has an ignition temperature of approximately 280-500℃; and nano-iron powder has an ignition temperature of approximately 250-280℃. The ignition temperature is directly proportional to the particle size.

[0054] In the example, when combustible powder flows in the curved powder channel 10 based on wind power, the curved powder channel 10 constitutes the high-temperature frictional heat generation mechanism, causing the combustible powder to collide with the inner wall of the powder channel 10. The powder particle flow needs to undergo two reversal movements, which greatly increases the friction coefficient and normal pressure between the powder particles and the heated inner wall of the U-shaped coil, resulting in the generation of local high-temperature frictional heat. Therefore, the heating element 8 only needs to provide a relatively low heating temperature, such as resistance heating, which can provide a heating temperature of 1000°C within 2 to 5 seconds. This means that the present invention can provide the heating temperature required for ignition very quickly, and the combustible particles can be reliably ignited under the synergy of local high-temperature frictional heat with only a brief activation of the heating element.

[0055] Meanwhile, the curved powder channel 10 formed by the U-shaped coil is conducive to extending the heating path and heating time of combustible powder in the same space, and optimizing the heating efficiency, so that the whole device can be miniaturized.

[0056] Furthermore, the length of the heating path / time for the powder in the powder channel 10 can be set according to the ignition point of the combustible powder, or the number of curved or spiral sections can be set as needed, such as... Figure 1 The U-shaped coil is composed of two U-shaped connections, i.e., it has two curved sections. In other embodiments, one or more curved sections may be provided according to the actual needs of ignition.

[0057] Furthermore, for each curved section, the curvature of the curved section can also be set according to the actual needs of ignition.

[0058] Therefore, combustible powder can be directly heated and ignited without the need for additional ignition components.

[0059] On the other hand, the particle size of the combustible powder can be selected as needed. This ensures that the particle size, heating temperature, and heating path / time are matched to guarantee that the combustible particles are successfully activated at the appropriate time (such as near the nozzle 9).

[0060] In the example, a heat insulation body 11 is provided around the heating element 8. This body serves a dual purpose of heat insulation and heat preservation, facilitating installation on a fixed structure and helping to maintain a constant temperature for the heating element 8. A power module 6 is also provided to supply power to the heating element 8, the fan assembly 7, and the motor 4; a control module 5 is provided to facilitate remote or local control via computer, mobile phone, etc.

[0061] Example 2: See Appendix Figure 3 This illustrates another specific structure of the present invention. The difference from Embodiment 1 is that the tube structure adopts a spiral tube structure, and the inner cavity of the tube is a powder channel 10. The heating element 8 is an electric heating plate attached to the outer wall of the spiral tube, making the spiral tube a heating cavity within the heating element 8. No heat insulation material is provided in this example. Further details are omitted.

[0062] Example 3: See Appendix Figure 4 This illustrates another specific structure of the present invention. The difference from Embodiment 1 is that the tube structure adopts a disc tube structure, and the inner cavity of the tube is a powder channel 10. Arrows in the figure illustrate the collision and friction between powder particles and the inner wall of the tube.

[0063] Figure 5 This reflects another type of disc tube construction. Further details will not be provided.

[0064] Example 4: See Appendix Figure 6 This illustrates another specific structure of the present invention. The difference from Embodiment 1 is that the tube structure adopts an L-shaped tube structure, with the inner cavity of the tube serving as a powder channel 10. A gravity-feeding mechanism is employed. Arrows in the figure illustrate the collision and friction between the powder particles and the inner wall of the tube. Further details are omitted.

[0065] Example 5: See Appendix Figure 7 This reflects another specific structure of the present invention. The difference from Embodiment 2 is that the heating element is disposed inside the housing 24, which can be inside or outside the inner wall 22, and the middle part of the powder channel 10 passes through the housing 24. The inner cavity of the spiral tube forms the powder channel 10. The feeding hole 23 on the side wall of the powder channel 10 connects to the powder storage device 2 to receive combustible powder. The powder is blown by the fan of the wind power component 7 until it is ignited and ejected from the nozzle 9. The housing structure is suitable for various heating methods, such as the aforementioned resistance heating, induction heating, microwave heating, thermal radiation heating, and thermal conduction heating. The housing 24 can be sealed for heat insulation.

[0066] Example 6: See Appendix Figure 8 This reflects another specific structure of the present invention. The difference from Embodiment 4 is that the shell is a gun-shaped shell 11, and the gun trigger 26 is used as the power supply switch for the heating element 8, the fan assembly 7, and the motor 4.

[0067] Example 7: See Appendix Figure 9 This reflects another specific structure of the present invention. The difference from Embodiment 6 is that the tube structure described herein adopts a disc tube structure, while Embodiment 6 adopts an L-shaped tube structure.

[0068] Example 8: See Appendix Figure 10 This reflects another specific structure of the present invention. The difference from Embodiment 6 is that the tube structure adopts a U-shaped coil structure.

[0069] Example 9: See Appendix Figure 11 This reflects another specific structure of the present invention. The difference from Embodiment 6 is that the shell is a pistol-shaped shell.

[0070] Example 10: See Appendix Figure 12 This reflects another specific structure of the present invention. The difference from Embodiment 1 is that the structure of the high-temperature frictional heat generation mechanism is as follows: it includes a straight powder channel 10, the air delivery direction of the wind power component 7 intersects the axial direction of the powder channel 10 at an angle A, the feeding direction of the screw conveyor mechanism 3 of the powder storage device 2 is perpendicular to the axial direction of the powder channel 10 (i.e., at a 90-degree angle), and the air delivery direction intersects the feeding direction at an angle B. This arrangement causes the combustible powder delivered by the screw conveyor mechanism 3 to collide with the inner wall of the powder channel 10 (the trajectory of the combustible powder within the powder channel 10 is shown by the arrow), resulting in the generation of high-temperature frictional heat. In other embodiments, the angles A and B can be any angle, without affecting the achievement of the invention's objective.

[0071] Example 11: See Appendix Figure 13 This reflects another specific structure of the present invention. The air supply direction of the wind power component 7 intersects the axial direction of the powder channel 10 at an angle N, and the feeding direction of the powder storage device 2 is perpendicular to the axial direction of the powder channel 10 to optimize the gravity feeding function. The air supply direction and the feeding direction intersect at an angle M. The difference from Embodiment 10 is that the shell is a pistol-shaped shell.

[0072] Example 12: See Appendix Figures 14 to 18 This reflects another specific structure of the present invention. The difference from Embodiment 1 is that the high-temperature frictional heat generation mechanism is a linear powder channel 10, and a flow disruptor 12 is provided within the powder channel 10 to change the flow direction of the combustible powder. In this example, the flow disruptor 12 consists of three arc-shaped guide vanes disposed within the powder channel 10. In other embodiments, the number of guide vanes can also be one (e.g., Figure 15 ), two (such as Figure 16 ), four (such as Figure 17 ), multiple (such as Figure 18 ).

[0073] Example 13: See Appendix Figure 19 This reflects another specific structure of the present invention. The difference from Embodiment 12 is that the powder storage device 2 uses gravity to vertically feed the powder into the straight powder channel 10, and the flow deflector 12 within the powder channel 10 that changes the flow direction of the combustible powder is a baffle. In other embodiments, the flow deflector 12 can also be a protrusion on the inner wall of the powder channel 10. The flow deflector 12 can also be other shapes, such as blade-type, mesh-shaped, conical, annular, spiral, porous, wavy, and combinations of various shapes that can change the flow direction of the combustible powder.

[0074] In other embodiments, the powder storage device 2 can also be equipped with a flow deflector 12 composed of guide vanes (e.g., when the powder is vertically fed into a straight powder channel 10 by gravity) to form a powder storage device 2. Figure 20 (As shown). Alternatively, two stages of baffles 12 can be installed before and after the powder channel 10 (e.g. Figure 21 (As shown). It can also be three, four or more levels, as long as it does not affect the powder spraying.

[0075] In other embodiments, the gun-shaped housing device may also be equipped with a spoiler 12 (e.g. Figure 22 (As shown). Alternatively, two stages of baffles 12 can be installed before and after the powder channel 10 (e.g. Figure 23 , 24 (As shown).

[0076] The embodiments of the present invention disclosed above are merely illustrative of the present invention. The embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific implementations described. Obviously, many modifications and variations can be made based on the content of this specification. This specification selects and describes these embodiments in detail with reference to the accompanying drawings to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present invention. Therefore, the present invention is limited only to the claims and their full scope and equivalents, and not to the specific embodiments disclosed.

Claims

1. A combustible powder cold light fireworks effect generating device comprising a powder storage device, characterised in that, The heating body is further provided with a heating cavity having a powder channel, and the powder channel is provided with a wind power assembly for sending air into the powder channel; the powder channel is provided with a high-temperature friction heat generating mechanism for enabling the combustible powder to collide with the inner wall of the powder channel; and the combustible powder in the powder storage device is ignited by the heating point based on the wind power.

2. A combustible powder cold light fireworks effect generating device as defined in claim 1, characterized in that The high-temperature friction heat generating mechanism is a curved or spiral powder channel.

3. A combustible powder cold light fireworks effect generating device as defined in claim 1, characterized in that The heating cavity is a tube structure located in the heating body, and the inner cavity of the tube is the powder channel.

4. A combustible powder cold light fireworks effect generating device as defined in claim 3, characterized in that The tube structure is selected from a spiral tube structure, a disc tube structure, an L-shaped tube structure and a U-shaped disc tube structure.

5. A combustible powder cold light pyrotechnic effect generating device as defined in claim 1, characterized in that The powder storage device sends the combustible powder into the powder channel through a spiral conveying mechanism.

6. A combustible powder cold light pyrotechnic effect generating device as defined in claim 1, characterized in that The high-temperature friction heat generating mechanism is a straight-line powder channel, and the air sending direction of the wind power assembly and / or the discharging direction of the powder storage device has a crossing angle with the axial direction of the powder channel.

7. A combustible powder cold light pyrotechnic effect generating device as defined in claim 1, characterized in that The high-temperature friction heat generating mechanism is a straight-line powder channel, and the powder channel is provided with a spoiler for changing the flow direction of the combustible powder.

8. A combustible powder cold sparkling firework effect generating device as defined in claim 7, characterized in that The spoiler is a protrusion, a baffle or a flow guide plate arranged in the powder channel.

9. A combustible powder cold sparkling firework effect generating device as defined in claim 7, characterized in that The spoiler is composed of a plurality of arc-shaped flow guide plates arranged in the powder channel.

10. A combustible powder cold sparkling firework effect generating device as defined in claim 7, characterized in that A plurality of levels of spoilers are arranged in front of and behind the powder channel.

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