Firework stick based on high-frequency induction heating

Abstract

A firework stick based on high-frequency induction heating, comprising a shell, one end of which is provided as a hand-holding part and the other end as a firework spraying part, characterized in that: the firework spraying part is internally provided with: a storage cavity for accommodating metal powder; a spraying pipe arranged on one side of the storage cavity; a fan arranged at the bottom of the spraying pipe for generating airflow to blow the metal powder out of the spraying pipe; a feeding mechanism connected with the storage cavity and the spraying pipe for conveying the metal powder from the storage cavity to the spraying pipe; and a high-frequency coil wound outside the feeding mechanism for high-frequency induction heating of the metal powder conveyed via the feeding mechanism.

Description

Technical Field

[0001] This utility model relates to the field of fireworks technology, specifically to a fireworks rod based on high-frequency induction heating. Background Technology

[0002] Traditional sparklers are typically based on the principle of gunpowder combustion, producing light, color, and spark effects by igniting a mixture of gunpowder and metal particles. These products pose a risk of open flame, produce smoke and irritating gases, and are disposable, making them both environmentally unfriendly and unsafe. Furthermore, their combustion process and effects are uncontrollable.

[0003] To overcome the aforementioned shortcomings, some electronic fireworks devices have emerged in the prior art, such as using LED lights to simulate visual effects or heating a small amount of powder with heating wires. However, LED solutions lack the spray texture and heat sensation of real fireworks; heating wire solutions suffer from low heating efficiency, easy oxidation and burnout, and short duration of effect.

[0004] Therefore, there is an urgent need in this field for a new technological solution that can simulate the effects of real fireworks while being safe, environmentally friendly, and reusable. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a firework stick based on high-frequency induction heating.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A firework stick based on high-frequency induction heating includes a shell, one end of which is configured as a handheld part, and the other end as a firework ejection part, wherein the firework ejection part is provided with: Storage chamber for holding metal powder; The ejection nozzle is located on one side of the storage chamber; A blower, located at the bottom of the nozzle, is used to generate airflow to blow metal powder out of the nozzle; A feeding mechanism, connecting the storage chamber and the firing pipe, is used to transport metal powder from the storage chamber to the firing pipe; A high-frequency coil is wound around the outside of the feeding mechanism and is used for high-frequency induction heating of metal powder conveyed by the feeding mechanism.

[0007] The fireworks ejection section includes an end fixedly connected to the housing. The end includes an upper shell that is divided into two chambers by a partition and a cover plate disposed on the upper end of the upper shell. One chamber is configured as a material storage chamber, and the ejection pipe is disposed in the other chamber.

[0008] The ejection tube is installed vertically, and a feed port connected to the feeding mechanism is provided on one side.

[0009] The bottom of the storage chamber is provided with a discharge port, and the feeding mechanism is connected to the inlet and the discharge port.

[0010] The feeding mechanism includes a ceramic tube, a feeding screw installed inside the ceramic tube, and a drive mechanism for driving the feeding screw.

[0011] The firework's spray section is equipped with several air inlets near the handheld part.

[0012] The handheld unit is equipped with a control module that is electrically connected to the high-frequency coil, the feeding mechanism, and the fan, and is used to control the high-frequency coil, the feeding mechanism, and the fan.

[0013] A switch for operating the control module is provided at any position on the surface of the handheld part.

[0014] The bottom of the storage chamber is provided with an inclined surface, which is oriented towards the discharge port.

[0015] An air duct for heat dissipation is formed between the air inlet and the fan.

[0016] The beneficial effects of this utility model are: 1. Safe and environmentally friendly: No open flame, no use of flammable and explosive gunpowder, the main consumable is metal powder, and no harmful gases are produced.

[0017] 2. Reusable: The main body of the equipment is electronic, and it can be used multiple times by simply adding metal powder, making it economical.

[0018] 3. Instant start and stop: Controlled by circuitry, the effect can be generated and disappear instantly, without the ignition delay and risk of burning out that are common with traditional fireworks. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the explosion of the fireworks jet section of this utility model.

[0022] Figure 4 This is a schematic diagram of the feeding mechanism of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] like Figure 1 and Figure 2 As shown, this utility model discloses a firework stick based on high-frequency induction heating. It heats metal powder using high-frequency induction. The specific principle of high-frequency induction heating is as follows: High-frequency induction is a heating technology that utilizes the eddy current loss and hysteresis effect generated in a conductor within a high-frequency alternating magnetic field to achieve self-heating. It does not produce an open flame, thus it is a relatively safe heating method. The metal powder used in this application is a common firework metal powder on the market (such as titanium, copper, potassium, aluminum, lithium, etc.). The high-frequency rod induction heats and transports the collected firework metal powder, instantly heating it to an incandescent state, forming high-temperature particles. These high-temperature particles are then carried by the airflow of a fan and ejected at high speed from the nozzle, forming a dazzling jet of sparks.

[0026] The sparkler includes a housing 100, one end of which is a handheld part 110 and the other end is a sparkler spraying part 120. The overall shape is cylindrical. The length of the handheld part is greater than the length of the sparkler spraying part, while the diameter of the handheld part is smaller than the diameter of the sparkler spraying part, or they can be equal. The handheld part is designed for easy hand operation, while the sparkler spraying part is used to realize the sparkler function. At the same time, the part that generates heat and sprays sparklers is located away from the handheld part to avoid burns to the hands.

[0027] The handheld unit houses the corresponding control module and battery, which are arranged along the axis of the handheld unit. The control module is positioned at a distance greater than the height of the fan, thus keeping it away from the heat source and ensuring its safety and reliability. The fireworks ejection section 120 has several air inlets 150 near the handheld unit 110. These air inlets 150 and the fan 700 form a cooling duct 130. When the fan starts, airflow enters through the air inlets and is expelled from the ejection pipe. The heat generated by the high-frequency coil is also carried away through this duct, thus achieving a cooling effect.

[0028] The fireworks spray section 120 is equipped with: The storage chamber 400 is used to hold metal powder; The ejection pipe 300 is located on one side of the storage chamber 400; A blower 700 is located at the bottom of the ejector pipe 300 and is used to generate airflow to blow metal powder out of the ejector pipe 300. The blower can be a turbine fan to make the airflow stronger. The feeding mechanism 500 connects the storage chamber 400 and the ejection pipe 300, and is used to transport metal powder from the storage chamber 400 to the ejection pipe 300. A high-frequency coil 600 is wound around the outside of the feeding mechanism 500 and is used for high-frequency induction heating of metal powder conveyed by the feeding mechanism 500.

[0029] In this embodiment, it is preferable to control the fan, the feeding mechanism and the high-frequency coil simultaneously, that is, to control the three devices through a single command. Specifically, when the feeding mechanism is started, the high-frequency coil wound on the outside heats up, and the fan starts at the same time.

[0030] The specific working process is as follows: An external trigger switch activates the control module to start the fan, feeding mechanism, and high-frequency coil. The feeding mechanism continuously transports the metal powder from the storage chamber to the ejection tube. When the metal powder passes through the area of ​​the feeding mechanism wound with the high-frequency coil, it is instantly heated to a high temperature, even melting or vaporizing, under the influence of the high-frequency alternating magnetic field, forming high-temperature bright spots. At this time, the strong airflow generated by the fan rapidly blows these high-temperature metal powder particles upward from the ejection tube, creating a dazzling jet of sparks in the air similar to traditional fireworks.

[0031] like Figure 3 As shown, the fireworks ejection section 120 includes an end fixedly connected to the housing. The end includes an upper shell 121 divided into two chambers by a partition and a cover plate 122 disposed on the upper end of the upper shell 121. One chamber is configured as a storage chamber 400, and the ejection pipe 300 is disposed in the other chamber. The upper shell is directly used to divide the two chambers. At the same time, the ejection pipe is disposed in one of the chambers and its circumference does not contact the inner wall of the chamber, so as to avoid damage to the upper shell caused by the high temperature of the ejection pipe.

[0032] The cover plate can seal the entire storage chamber. In some embodiments, metal powder can be added to the storage chamber by opening the cover plate. In this embodiment, a hopper cover is provided on the cover plate. The hopper cover can be opened to add metal powder.

[0033] The ejection tube 300 is installed vertically, and one side of it is provided with an inlet 310 that communicates with the feeding mechanism 500. The air outlet of the fan is located below the ejection tube 300. The fan generates an upward airflow, which carries the high-temperature metal powder that enters through the inlet out of the ejection tube, thus creating a fireworks effect.

[0034] The storage chamber 400 has a discharge port 410 at its bottom, and the feeding mechanism 500 connects the inlet 310 and the discharge port 410. The bottom of the storage chamber 400 has an inclined surface facing the discharge port 410. In some embodiments, it can also be configured as a conical hopper. Under the action of gravity, the metal powder in the storage chamber will slide down the inclined surface and enter the feeding mechanism.

[0035] The feeding mechanism 500 includes a ceramic tube 510, a feeding screw 520 disposed inside the ceramic tube 510, and a drive mechanism 530 for driving the feeding screw 520 to move. The drive mechanism is a motor, which can be a micro stepper motor to reduce the size and make installation more convenient. Through a matching bevel gear set, the feeding screw is driven to rotate, thereby moving the metal powder along the length of the ceramic tube and feeding it into the ejection tube.

[0036] like Figure 4 As shown, the ceramic tube is cylindrical in shape, with holes forming the feed screw through it. A funnel-shaped structure 511 connected to the discharge port is provided above its rear end, and its front end is adapted to the feed port of the ejection tube.

[0037] The handheld unit 110 is equipped with a control module 800, which is electrically connected to the high-frequency coil 600, the feeding mechanism and the fan 700, and is used to control the high-frequency coil 600, the feeding mechanism and the fan 700.

[0038] The control module can use an existing high-frequency induction heating module, with an independent control circuit added on top of it. The control circuit controls the high-frequency induction heating module, the fan and the drive motor respectively. The corresponding control circuits are all conventional control circuits, so they will not be described in detail in this application.

[0039] In this embodiment, the control of the high-frequency coil, feeding mechanism, and fan is fixed, meaning that a single button press enables them to operate according to preset instructions. However, in some embodiments, they can be set to be adjustable. The difference lies in outputting different control signals according to preset instructions based on different received signals. For example, different working programs can be switched through different button modes of switch 200, such as changing the feeding speed and high-frequency power to achieve different effects such as "continuous spraying" and "pulse flashing". Simultaneously, for better heat dissipation, the fan's operating time is preferably longer than the heating time of the high-frequency coil; that is, after the high-frequency coil stops working, the fan continues to operate for a certain period to accelerate internal heat dissipation.

[0040] A switch 200 for operating the control module is provided at any position on the surface of the handheld part 110. The switch can be a button, a touch element, a slider, etc., and its main function is to start and stop the operation.

[0041] Preferably, to further improve safety, a corresponding safety switch can be provided on the surface of the handheld part, that is, the switch 200 can only operate normally when the safety switch is triggered.

[0042] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A firework stick based on high-frequency induction heating, comprising a shell (100), one end of which is configured as a handheld part (110), and the other end as a firework ejection part (120), characterized in that: The fireworks spray section (120) is equipped with: Storage chamber (400) is used to contain metal powder; The ejection pipe (300) is located on one side of the storage chamber (400); A blower (700), disposed at the bottom of the nozzle (300), is used to generate airflow to blow metal powder out of the nozzle (300); A feeding mechanism (500) connects the storage chamber (400) and the ejection pipe (300) to transport metal powder from the storage chamber (400) to the ejection pipe (300). A high-frequency coil (600) is wound around the outside of the feeding mechanism (500) for high-frequency induction heating of metal powder conveyed by the feeding mechanism (500).

2. A firework stick based on high-frequency induction heating according to claim 1, characterized in that: The fireworks ejection section (120) includes an end fixedly connected to the housing. The end includes an upper shell (121) divided by a partition to form two chambers and a cover plate (122) disposed on the upper end of the upper shell (121). One chamber is configured as a storage chamber (400), and the ejection pipe (300) is disposed in the other chamber.

3. A firework stick based on high-frequency induction heating according to claim 1, characterized in that: The ejection tube (300) is installed vertically, and a feed port (310) connected to the feeding mechanism (500) is provided on one side.

4. A firework stick based on high-frequency induction heating according to claim 3, characterized in that: The storage chamber (400) has a discharge port (410) at the bottom, and the feeding mechanism (500) is connected to the inlet (310) and the discharge port (410).

5. A firework stick based on high-frequency induction heating according to claim 1 or 4, characterized in that: The feeding mechanism (500) includes a ceramic tube (510), a feeding screw (520) disposed in the ceramic tube (510), and a drive mechanism (530) for driving the feeding screw (520) to move.

6. A firework stick based on high-frequency induction heating according to claim 1 or 2, characterized in that: The firework jet section (120) is provided with several air inlets (150) near the handheld part (110).

7. A firework stick based on high-frequency induction heating according to claim 1, characterized in that: The handheld unit (110) is equipped with a control module (800) which is electrically connected to the high-frequency coil (600), the feeding mechanism (500) and the fan (700) for controlling the high-frequency coil (600), the feeding mechanism (500) and the fan (700).

8. A firework stick based on high-frequency induction heating according to claim 7, characterized in that: The handheld part (110) has a switch (200) for operating the control module at any position on its surface.

9. A firework stick based on high-frequency induction heating according to claim 1 or 4, characterized in that: The bottom of the storage chamber (400) is provided with an inclined surface, which is set towards the discharge port (410).

10. A firework stick based on high-frequency induction heating according to claim 6, characterized in that: An air duct (130) for heat dissipation is formed between the air inlet (150) and the fan (700).

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