Powder-Driven Injector Structure for Clean Rapid Pressurization
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Solution Overview
Problem
Existing injectors using gunpowder combustion for pressurization face challenges in minimizing the impact of combustion products on the injection substance, leading to suboptimal pressurization and potential contamination risks.
Innovation Solution
A design where gunpowder combustion occurs in a first space with a partition member that breaches to contain combustion products in a second space, using the case's extending section to transfer energy to a piston for efficient pressurization of the injection substance, while keeping combustion products encapsulated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional igniter with a bellows-shaped cup is used, then the combustion product is encapsulated, but the pressurization speed decreases due to the slowing combustion rate
Solution Approach 1:
The ignition device is divided into two separate spaces: a first space for gunpowder combustion and a second space for containing combustion products. The partition member separates these spaces, allowing the combustion to occur in a confined first space without the capacity expansion issue, while the second space captures the combustion products to prevent contamination of the injection substance.
Solution Approach 2:
The partition member acts as an intermediary structure that allows pressure transmission from the first space to the second space while maintaining separation. It breaches under pressure to allow combustion products to enter the second space, thereby mediating between the need for rapid combustion and the need to contain combustion products.
2Object-affected harmful factors
If the bellows portion extends during combustion, then the combustion product is contained, but the combustion rate slows down due to increased internal space capacity
Solution Approach 1:
The ignition device is divided into two separate spaces: a first space for gunpowder combustion and a second space for containing combustion products. The partition member separates these spaces, allowing the combustion to occur in a confined first space without the capacity expansion issue, while the second space captures the combustion products to prevent contamination of the injection substance.
Solution Approach 2:
The partition member is pre-configured to breach at a specific pressure threshold. This preliminary design ensures that the first space maintains its confined capacity during the critical combustion phase, preserving combustion rate, and only after the partition breaches does the combustion product enter the second space for containment.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration allows for rapid and effective pressurization of the injection substance while preventing combustion residues from contaminating it, reducing noise and improving user convenience.
Implementation Method 1
gunpowder combustion occurs in a first space with a partition member that breaches to contain combustion products in a second space
Implementation Method 2
a configuration is adopted in which the case is provided with an extending section in order to cause a part of the case to be propelled by a pressure rise inside the second space
Data Source
Figure 1(a)~1(c)
Figure 2(a)~2(b)
Figure 3
AI summary
An injector according to the present invention includes: an ignition device having a partition member which forms a first space to store a gunpowder and which is formed by a prescribed rigid material such that the partition member is breached due to a rise in pressure of the first space when the gunpowder is burned; and a case of which a base section is fixed on a side of the ignition device and which is arranged in a space inside the injector main body so as to cover the ignition device, the case defining a second space with the partition member of the ignition device and encapsulating, inside the second space, a combustion product of the gunpowder. In addition, when the gunpowder burns in the ignition device and pressure inside the second space rises, a part of the case extends so as to approach a prescribed end section of the piston on a side opposite to an end section opposing the plunger and presses the piston. Accordingly, in the injector, effects of a combustion product generated by the gunpowder combustion on the injection objective substance can be suppressed and pressurization of the injection objective substance can be performed in a preferable manner.