Insulating Container with Waterproof Closure to Prevent Liquid Leakage
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Solution Overview
Problem
Existing portable coolers face challenges in maintaining temperature and preventing liquid leakage, especially when inverted or subjected to pressure, due to inadequate insulation and waterproofing solutions.
Innovation Solution
A portable insulating device featuring a waterproof closure, an outer shell, an inner liner, and a freely floating insulating layer made of foam, which is secured to the closure but not directly to the shell or liner, providing effective temperature retention and liquid resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a waterproof closure is added to prevent liquid leakage, then liquid resistance is improved, but device complexity increases
Solution Approach 1:
The closure system employs a nested structure where an inner liner with integrated closure mechanism is placed within the outer shell. The inner liner contains the waterproof closure that seals the aperture, while the outer shell provides additional protection. This nesting allows the closure to be integrated into the liner rather than adding a separate external mechanism, thus improving liquid resistance without proportionally increasing overall device complexity.
Solution Approach 2:
The inner liner acts as an intermediary component between the contents and the outer shell. It incorporates the waterproof closure mechanism that mediates the sealing function, preventing liquid leakage while allowing the outer shell to maintain its insulating function. This intermediary approach distributes the waterproofing function across multiple components rather than requiring the entire structure to be complexly sealed.
2Temperature
If an insulating layer is placed between the outer shell and inner liner, then temperature retention is improved, but device complexity increases
Solution Approach 1:
The insulating system is segmented into distinct functional layers: an outer shell for structural protection, an insulating layer for thermal management, and an inner liner with closure for sealing. This segmentation allows each layer to be optimized for its specific function while maintaining a relatively simple overall structure. The insulating layer can be a simple foam material without complex mechanisms, yet effectively retains temperature.
Solution Approach 2:
Different layers are assigned different material properties localized to their specific functions. The outer shell uses durable, water-resistant material; the insulating layer uses low thermal conductivity material; and the inner liner uses flexible, sealable material. This local quality approach allows temperature retention to be improved through material selection rather than structural complexity.
3Ease of manufacture
If the insulating layer is made to float freely without attachment, then ease of manufacture is improved, but reliability may worsen due to potential displacement
Solution Approach 1:
The freely floating insulating layer serves itself by naturally positioning itself within the available space between the outer shell and inner liner. It does not require external attachment mechanisms, clips, or fasteners to maintain its insulating function. The layer's buoyancy and flexibility allow it to self-adjust to the container's shape and contents, maintaining thermal insulation effectiveness without compromising ease of manufacture through simple drop-in installation.
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 device maintains contents at desired temperatures for extended periods and prevents liquid leakage, even when inverted, due to its watertight design and efficient insulation, ensuring effective cooling or warming of contents.
Implementation Method 1
an insulating layer in between the inner liner and the outer shell
Implementation Method 2
a closure that is waterproof so as to prevent liquid from entering or exiting the inner liner
Data Source
AI summary
An insulating device can include an aperture having a waterproof closure which allows access to the chamber within the insulating device. The closure can help prevent any fluid leakage into and out of the insulating device if the insulating device is overturned or in any configuration other than upright. The closure also prevents any fluid from permeating into the chamber if the insulating device is exposed to precipitation, other fluid, or submersed under water. This construction results in an insulating chamber impervious to water and other liquids when the closure is sealed.