Backpack Cold Packs with High Specific Heat for Thermal Management
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Solution Overview
Problem
Existing backpack devices lack effective cooling mechanisms for the back and inner straps, particularly failing to provide comprehensive heat management during use.
Innovation Solution
A backpack design incorporating a plurality of cold packs with a specific heat greater than water, strategically positioned on the back and shoulder straps to maintain user comfort by dissipating heat, including back cold packs and shoulder cold packs with horizontal texture ridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If existing backpack devices use complex fluid flow mechanisms, then cooling effect is achieved, but device complexity increases
Solution Approach 1:
The patent extracts the cooling function from complex fluid flow mechanisms and implements it through simple cold packs that can be directly placed in pockets. This removes the need for complex pumps, tubes, and fluid circulation systems while maintaining the cooling effect.
Solution Approach 2:
The patent uses replaceable cold packs as simple, inexpensive cooling elements that can be frozen and reused multiple times. These cold packs are much simpler than permanent fluid flow mechanisms and can be easily replaced when needed.
2Temperature
If existing backpack devices add new face or padding components, then cooling coverage is improved, but device complexity increases
Solution Approach 1:
The patent makes the cold packs and pockets universal components that can serve multiple cooling locations. The same cold pack design is used for both back pockets and shoulder strap pockets, and the pockets can accommodate different cold pack sizes and shapes.
Solution Approach 2:
The patent divides the cooling system into separate, modular cold packs that can be independently placed in different pockets (back pockets and shoulder strap pockets). This segmentation allows flexible arrangement without requiring a single complex integrated cooling structure.
3Ease of manufacture
If existing backpack devices lack inner strap cooling, then manufacturing simplicity is maintained, but cooling completeness deteriorates
Solution Approach 1:
The patent adds shoulder strap pockets as separate, modular components that can be independently manufactured and attached to the backpack. This segmentation allows the inner strap cooling feature to be added without redesigning the entire backpack structure.
Solution Approach 2:
The patent applies cooling specifically to the shoulder strap areas where heat buildup occurs, rather than attempting to cool the entire backpack uniformly. The shoulder strap pockets are strategically positioned to provide targeted cooling where needed most.
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 keeps the user's back and shoulders cool by utilizing cold packs with high specific heat capacity, enhancing thermal comfort during wear.
Implementation Method 1
A plurality of back cold packs is coupled to the back side of the backpack body. Each back cold pack has a specific heat greater than that of water.
Data Source
AI summary
A cooling backpack apparatus for keeping a wearer cool includes a backpack body a front side, a back side, a top side, a bottom side, a left side, and a right side. A pair of shoulder straps is coupled to the backpack body. Each shoulder strap of the pair of shoulder straps is coupled to the back side adjacent the top side and adjacent the bottom side. A plurality of back cold packs is coupled to the back side of the backpack body. Each back cold pack has a specific heat greater than that of water.