Self-Heating Container Reactant Mixing for Rapid Beverage Heating
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Solution Overview
Problem
Existing self-heating systems for beverages and food are inefficient in heating larger volumes quickly and maintaining temperature, with prior art systems being slow and not designed for effective reactant separation and mixing, leading to suboptimal performance in on-the-go consumer applications.
Innovation Solution
A compact, disposable self-heating container system that utilizes a multi-stage exothermic reaction with optimized reactant separation and mixing, capable of heating 6-12 fluid ounces of a consumable substance from room temperature to 145°F in under a minute, with controlled heat transfer to maintain temperature for an extended period, using a rupturable barrier to initiate the reaction and insulating materials to direct heat efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If prior art self-heating systems use simple exothermic reaction between calcium oxide and water, then the system is easy to manufacture, but the heating speed for larger volumes is slow and temperature cannot be maintained
Solution Approach 1:
The reactants are divided into multiple compartments (first compartment with calcium oxide, second compartment with water) separated by a breakable partition. This segmentation allows controlled mixing while enabling rapid heat generation through optimized reactant contact, resolving the contradiction between ease of manufacture and heating speed.
Solution Approach 2:
The reactants are pre-positioned in separate compartments with the breakable partition already in place. When the partition is broken, the reactants are immediately mixed and the exothermic reaction begins without delay. This preliminary arrangement enables rapid heating while maintaining simple manufacturing processes.
2Device complexity
If prior art self-heating systems use simple exothermic reaction, then the device structure is simple, but the temperature cannot be maintained for extended period
Solution Approach 1:
The system controls the exothermic reaction parameters by adjusting reactant ratios, compartment sizes, and partition breakage characteristics. These parameter changes enable the reaction to maintain temperature for extended periods (at least 2 minutes) while keeping the device structure relatively simple.
Solution Approach 2:
The breakable partition design ensures continuous and complete mixing of reactants, maintaining the exothermic reaction continuously for an extended period. This continuous action keeps the beverage or food heated for at least 2 minutes without requiring complex temperature control mechanisms.
3Ease of operation
If prior art systems lack optimized reactant separation and mixing design, then the system is simple to operate, but the heating efficiency is suboptimal
Solution Approach 1:
The container is segmented into distinct compartments for reactant storage with a breakable partition. This segmentation maintains operational simplicity (user only needs to break the partition) while dramatically improving heating efficiency through optimized reactant separation and controlled mixing.
Solution Approach 2:
The breakable partition transitions from a static barrier to a dynamic mixing mechanism when broken. This dynamic change enables efficient reactant mixing and heat generation while requiring minimal user effort, maintaining ease of operation while improving heating efficiency.
4Productivity
If the system heats larger volumes rapidly, then the heating speed is fast, but the internal pressure increases requiring durable container design
Solution Approach 1:
The container is divided into compartments that manage pressure distribution during the exothermic reaction. The breakable partition and compartment structure contain and direct the rapid reaction, managing internal pressure while enabling fast heating of larger volumes.
Solution Approach 2:
The container structure is designed beforehand to withstand the internal pressure generated during rapid heating. The durable materials and structural design anticipate and cushion against pressure effects, enabling fast heating of larger volumes without compromising container integrity.
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 system achieves rapid and efficient heating of beverages and food, maintaining temperatures above 145°F for at least 2 minutes with high thermal efficiency, while being compact and durable enough to withstand internal pressures, addressing the shortcomings of prior art systems.
Implementation Method 1
Rupture of the barrier allows contact between the reactants to form a reaction mixture and initiate a multi-stage exothermic reaction. The exothermic reaction generates sufficient heat during a first stage of the reaction to cause, for an initial duration, at least a portion of the contents of the reaction chamber to have a temperature of at least 212° F.
Implementation Method 2
A portion of the heat from the exothermic reaction is rapidly transferred to the comestible substance in the container body. The amount and rate of heat transferred are at least sufficient to heat the comestible substance from a temperature of about 80° F. to a temperature of about 145° F. within one minute of the initiation of the exothermic reaction.
Implementation Method 3
After rapidly raising the initial temperature of the comestible substance, the exothermic reaction is configured to generate a lesser amount of heat during a second stage of the exothermic reaction than during the first stage of the exothermic reaction. A portion of the heat generated during the second stage of the reaction is also transferred to the comestible substance at a rate that is capable of maintaining the temperature of the comestible substance preferably at or above 145° F. for at least 2 minutes.
Data Source
AI summary
Self-heating systems for rapidly and effectively heating a comestible substance are disclosed. Self-heating systems generally include a reaction chamber and a heating chamber. The heating chamber contains a substance to be heated. The reaction chamber contains reactants that, when contacted, exothermically react. The containers and reactants can be configured to heat at least six fluid ounces of comestible substance in less than one minute. The solid chemical reactant mixture can comprise magnesium chloride, calcium chloride, and/or calcium oxide. Methods for heating at least six fluid ounces of comestible substance in less than one minute are also provided.