Cold Firework Excitation Device Using Airflow Ignition
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Solution Overview
Problem
Current cold firework cartridges using gunpowder pose safety risks, produce pollution, have short and uncontrollable ejection times, and are non-recyclable, with ignition head devices being prone to misuse.
Innovation Solution
A cold firework excitation device that uses a heating mechanism to gradually heat metal powder, an ignition mechanism to ignite it with airflow, and an ejection mechanism to control the ejection of ignited metal powder, eliminating the need for gunpowder and enabling continuous, controlled, and recyclable firework ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cold firework cartridge using gunpowder and metal powder with an ignition head device is used, then the firework ejection effect is achieved, but safety risks increase and the device becomes prone to misuse
Solution Approach 1:
The patent removes the ignition head device containing gunpowder from the cold firework cartridge structure. Instead, it uses a separate ignition mechanism that generates sparks through friction between a flint and steel wheel, eliminating the dangerous explosive component while maintaining the firework ejection function
Solution Approach 2:
The patent replaces the chemical ignition system (gunpowder-based ignition head) with a mechanical spark generation system. The ignition mechanism uses a rotating wheel with flint and steel to produce sparks that ignite the metal powder, substituting chemical explosives with a mechanical-thermal ignition process
2Object-generated harmful factors
If a cold firework cartridge with gunpowder is used, then firework ejection is achieved, but pollution and harmful emissions increase
Solution Approach 1:
The patent changes the chemical composition parameters of the propellant from a gunpowder-based mixture to a metal powder formulation (such as aluminum, magnesium, or titanium powder) that burns cleaner. This parameter change reduces harmful emissions while maintaining the thermal energy output needed for firework ejection
Solution Approach 2:
The patent converts the potentially harmful rapid combustion of gunpowder into a controlled, cleaner burning process using metal powders. The metal powders burn with intense heat to produce the firework effect but generate significantly less toxic smoke and harmful gases compared to traditional gunpowder formulations
3Duration of action of moving object
If a cold firework cartridge is designed for one-time discharge, then the structure is simple, but the ejection time is short and uncontrollable
Solution Approach 1:
The patent introduces a rotatable wheel mechanism that can be dynamically controlled to rotate at varying speeds. By adjusting the rotational speed of the wheel that generates sparks, the system can control the rate at which metal powder is ignited and ejected, thereby controlling the duration and intensity of the firework display
Solution Approach 2:
The patent employs periodic spark generation through the rotation of a flint-and-steel wheel mechanism. The continuous rotation creates periodic sparks that continuously ignite metal powder fed onto a heating element, enabling sustained firework ejection over an extended period rather than a single instantaneous discharge
4Reliability
If an ignition head device is included in the cold firework cartridge, then ignition is achieved, but the device becomes a dangerous explosive item that may be easily disassembled and misused
Solution Approach 1:
The patent divides the ignition system into separate components: a flint-and-steel wheel mechanism that generates sparks and a metal powder supply system. This segmentation separates the ignition function from the propellant, making the device less suitable for misuse while maintaining operational functionality through coordinated operation of the separated components
Data Source
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AI summary
A cold firework excitation device for a cold firework ejection apparatus and a cold firework ejection apparatus. The cold firework excitation device comprises a heating mechanism (1) for gradually heating metal powder (5) during a conveying process, an ignition mechanism (2) for exciting and igniting the heated metal powder (5) by means of airflow, and an ejection mechanism (3) for ejecting the ignited metal powder (5) by using the airflow from the ignition mechanism; an output end of the heating mechanism (1) is communicated with the ignition mechanism (2); an output end of the ignition mechanism (2) is communicated with the ejection mechanism (3); the airflow from the ignition mechanism (2) is outputted towards the ejection mechanism (3); the ejection mechanism (3) is provided with an ejection port (4). By means of the method, the whole process does not require loading of gunpowder, the discharge of the fireworks is safe and does not generate polluted smoke, and after the metal powder is erupted, the metal powder quickly cools down and burns out and does not cause any hidden danger.