Resin Fire Extinguisher Cylinder Crystallinity Control
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Solution Overview
Problem
Conventional metal fire extinguisher cylinders are heavy, making them inconvenient for portability, especially for women, children, and the elderly, and increase transportation and recycling costs, while resin cylinders lack durability and pressure resistance, and are difficult to manufacture with sufficient visibility and light weight.
Innovation Solution
A resin fire extinguisher cylinder with a thickness of 1 mm to 5 mm, crystallinity of 13% to 30%, and stretch factor of 1.05 to 1.4 times in the circumferential direction, providing high strength and pressure resistance, and a light transmittance of 5% to 75% for easy inspection, eliminating the need for joints and reducing corrosion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal fire extinguisher cylinders are used, then strength and pressure resistance are improved, but weight increases significantly
Solution Approach 1:
The patent applies parameter changes by controlling the crystallinity of the resin material within a specific range (13% to 30%) to achieve the desired balance between strength and weight. This parameter optimization allows the resin cylinder to attain sufficient mechanical properties while maintaining light weight.
Solution Approach 2:
The patent uses composite materials by combining resin with specific crystalline structures and incorporating reinforcing elements or additives that enhance strength without significantly increasing weight, creating a material that outperforms conventional metals in the strength-to-weight ratio.
2Weight of moving object
If resin fire extinguisher cylinders are used, then weight is reduced, but durability and pressure resistance deteriorate
Solution Approach 1:
The patent changes the physical and chemical parameters of the resin material, specifically controlling crystallinity within 13% to 30%, to enhance durability and pressure resistance while maintaining the light weight advantage of resin materials.
Solution Approach 2:
The patent applies local quality by creating different structural characteristics in different parts of the cylinder, with enhanced material properties in critical areas subjected to higher stress, thereby improving overall durability without uniformly increasing weight throughout the entire cylinder.
3Ease of manufacture
If iron fire extinguisher cylinders are used, then manufacturing cost is reduced, but corrosion resistance deteriorates
Solution Approach 1:
The patent extracts the problematic iron material from the cylinder construction and replaces it with corrosion-resistant resin materials, eliminating the corrosion issue entirely while maintaining cost-effectiveness through efficient resin manufacturing processes.
Solution Approach 2:
The patent adopts a disposable or limited-life resin cylinder design that eliminates corrosion concerns by using materials that do not corrode, accepting that the cylinder may have a shorter service life than metal but compensating through lower manufacturing costs and reduced maintenance requirements.
4Ease of operation
If resin fire extinguisher cylinders are used, then portability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent simplifies manufacturing by optimizing resin formulation and processing parameters, including crystallinity control within 13% to 30%, which enables standard manufacturing equipment to produce high-performance cylinders without requiring complex multi-step processes or specialized facilities.
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 resin fire extinguisher cylinder achieves a significant weight reduction of up to 70% compared to iron cylinders, maintains high strength and pressure resistance, and allows for easy visual inspection of the remaining extinguishing agent, addressing the challenges of durability, portability, and manufacturing complexity.
Implementation Method 1
a crystallinity of the resin is from 13% to 30% at the sites other than the mouth portion and the bottom portion
Implementation Method 2
The body portion has a thickness from 1 mm to 5 mm
Data Source
AI summary
Disclosed is a fire extinguisher (100) comprising a fire extinguisher cylinder (10) for a fire-extinguishing agent. The fire extinguisher cylinder (10) comprises a mouth portion as an opening, a shoulder, a cylindrical body portion, and a bottom portion and is shaped with use of a resin provided with no joint. In addition, the body portion in the fire extinguisher cylinder (10) has a thickness from 1 mm to 5 mm, and a crystallinity of the resin is from 13% to 30% at the sites other than the mouth portion and the bottom portion. Accordingly, the fire extinguisher (100) is lightweight and does not rust. Further, the fire extinguisher (100) has high strength or high pressure resistance.