Injection Container Valve Assembly for Overpressure Blocking
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Solution Overview
Problem
Injection containers can reach an overpressure state due to thermal, mechanical, or chemical reasons, leading to potential malfunctions such as explosions or safety hazards, as conventional methods for relieving pressure often result in the instantaneous discharge of massive amounts of gas, posing additional safety risks.
Innovation Solution
An injection container with a valve assembly that includes a flow path blocking valve with a melting portion that melts at a preset temperature to block the communication flow path, preventing gas discharge and maintaining a stable blocked state, thereby relieving overpressure without leaking gas externally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional structures for discharging overpressure gas are added, then the injection container can relieve overpressure, but massive amounts of gas are instantaneously discharged to the outside causing safety accidents
Solution Approach 1:
The patent converts the harmful overpressure condition into a beneficial safety mechanism by using heat-activatable materials that melt at specific temperatures to automatically close the communication flow path. The thermal energy that causes overpressure is transformed into the activation mechanism for pressure relief, preventing catastrophic failure while avoiding gas discharge to the external environment.
Solution Approach 2:
The patent introduces a melting portion as an intermediary substance between the overpressure condition and the flow path blocking valve. This intermediary material, which melts at a predetermined temperature, acts as a mediator that triggers the closing of the communication flow path, thereby preventing direct discharge of overpressurized gas to the outside while maintaining system safety.
2Object-affected harmful factors
If the valve assembly maintains a closed state, then gas discharge is prevented, but the injection container reaches an overpressure state leading to malfunction
Solution Approach 1:
The patent changes the physical state parameter of the melting portion material from solid to liquid at a predetermined temperature threshold. This parameter change triggers the automatic closing of the communication flow path, allowing the system to transition from a closed state (preventing gas discharge) to a blocked state (relieving overpressure) based on temperature conditions, thereby resolving the contradiction between gas containment and overpressure tolerance.
3Reliability
If a flow path blocking valve with melting portion is used, then the communication flow path is blocked when overpressure occurs, but the structure becomes more complex
Solution Approach 1:
The melting portion material performs the sensing and actuation functions automatically based on temperature changes, eliminating the need for external sensors, actuators, or control systems. The material self-activates the flow path blocking mechanism when the predetermined temperature is reached, providing overpressure protection through self-service functionality that minimizes structural complexity.
Solution Approach 2:
The melting portion is designed as a consumable, single-use component that melts and is consumed during the overpressure relief event. This disposable element provides a simple, cost-effective solution for overpressure protection without requiring complex, reusable mechanical or electronic systems, thereby reducing overall device complexity while maintaining reliable overpressure protection.
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
The solution effectively prevents overpressure-related malfunctions and safety hazards by selectively blocking the communication flow path when an overpressure occurs, ensuring the safe containment of contents within the injection container.
Implementation Method 1
a melting portion configured to support the closing member in a solid state, and formed to melt at a temperature more than a preset level
Data Source
AI summary
Provided is an injection container capable of relieving an overpressure state which includes a housing having therein an accommodation space for accommodating contents, and having an upper sealing cap for sealing an upper part of the accommodation space; a mounting cup mounted to the upper sealing cap, and having a through hole at a middle part thereof; a stem housing including a mounting portion having a hollow portion therein and mounted to the mounting cup, and a communication flow path for communicating the hollow portion with the accommodating space; a valve stem having one side which passes through the through hole, having another side arranged at the hollow portion so as to be slidable, and having an orifice selectively communicated with the hollow portion by the sliding; and a flow path blocking valve configured to block the communication flow path when an overpressure occurs.