Steam Generator Laminate for Rapid, Stable Heating Tools
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Solution Overview
Problem
Existing heating tools using oxidizable metals and water absorbent polymers struggle with rapid temperature rise and stable steam generation, often resulting in uneven heat distribution and inefficient moisture utilization.
Innovation Solution
A heating tool design featuring a steam generator with a laminated structure of an oxidizable metal, carbon component, water absorbent polymer, and water, housed in an air-permeable bag, where the water absorbent sheet has a specific mass ratio and basis weight to enhance moisture absorption and oxygen supply, facilitating efficient heat conversion to steam.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a heat generation composition containing oxidizable metal, carbon component, and water is used, then heat generation reaction occurs, but dust generation during manufacturing and uncontrolled heat generation occur
Solution Approach 1:
The heat generating layer is divided into multiple layers with different functions: an oxidizable metal layer (iron powder) for heat generation, a carbon component layer for catalysis and structure, and a water absorbent polymer layer for controlled water release. This segmentation allows each layer to perform its specific function while preventing dust generation and uncontrolled heat generation through proper layer integration.
Solution Approach 2:
The patent uses a composite heat generation composition combining oxidizable metal particles, carbon component, and water absorbent polymer in specific ratios. This composite structure prevents dust generation by binding particles together and controls heat generation through the polymer's water retention and gradual release mechanism, eliminating the need for additional binding agents.
2Quantity of substance
If water absorbent polymer is added to control moisture, then moisture utilization improves, but temperature control becomes difficult
Solution Approach 1:
The patent optimizes the water content in the heat generating layer to within 5% by mass and controls the water absorbent polymer content to 5-20 parts by mass per 100 parts of oxidizable metal. These parameter changes ensure sufficient moisture for sustained heat generation while preventing excessive temperature rise, achieving both moisture utilization and temperature control.
Solution Approach 2:
The water absorbent polymer acts as an intermediary between the oxidizable metal and external water sources. It absorbs and retains water, then releases it gradually to the heat generation reaction, mediating the water supply to prevent both moisture deficiency and excessive moisture that would cause temperature control issues.
3Reliability
If heat generation composition is filled in large amount for stable heat generation, then heat generation stability improves, but device size increases
Solution Approach 1:
The patent achieves stable heat generation with reduced material quantity by optimizing the compositional ratios: oxidizable metal 80-95 parts by mass, carbon component 1-20 parts by mass, and water absorbent polymer 5-20 parts by mass per 100 parts of oxidizable metal. These parameter optimizations increase reaction efficiency and stability while minimizing the total amount of material needed, thus reducing device size.
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 design achieves rapid temperature rise, stable steam generation, and controlled temperature, improving heat distribution and efficiency while preventing excessive heat buildup.
Implementation Method 1
a heat generating layer which contains an oxidizable metal, a carbon component, a water absorbent polymer, and water
Implementation Method 2
generate heat by the oxidation reaction of the oxidizable metal
Implementation Method 3
a water absorbent polymer, and water
Implementation Method 4
a water absorbent sheet which carries water are laminated
Implementation Method 5
a water absorbent sheet which carries water are laminated
Implementation Method 6
a bag at least a portion of which has an air permeability and which accommodates the steam generator
Implementation Method 7
stable steam generation, and controlled temperature
Data Source
AI summary
A heating tool (100) according to the present invention includes a steam generator (10) that a heat generating layer (11) which contains an oxidizable metal, a carbon component, a water absorbent polymer, and water, and a water absorbent sheet (102) which carries water are laminated, and a bag (20) at least a portion of which has an air permeability and accommodates the steam generator (10), in which a mass ratio of the water absorbent sheet (102) is equal to or greater than 0.9 and equal to or less than 15 with respect to the water absorbent polymer contained in the heat generating layer (11).