Head Cooling Device with PCM Wing Chambers and Cushioning
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Solution Overview
Problem
Conventional head cooling devices suffer from reduced cooling effectiveness due to poor contact with the user's head, short duration of cooling operation, and safety concerns from external impacts, particularly when the phase change material (PCM) is increased in volume to enhance cooling.
Innovation Solution
A head cooling device design featuring a central portion with a flange and radially extending wing portions, each containing multiple chambers filled with PCM, where the wing portions are connected by bridges and include cushioning members to enhance contact and absorb external impacts, thereby increasing the cooling duration and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the volume of PCM charged in the chamber is increased to extend cooling duration, then the cooling operation duration is improved, but the weight of the solidified PCM increases causing a hammer effect that threatens user safety during impact
Solution Approach 1:
A cushioning member is provided within the chamber to absorb external impacts before they can cause harmful hammer effects. This cushioning element is positioned in advance to protect the PCM and user head from impact forces, allowing the PCM volume to be increased for extended cooling duration without compromising safety.
2Duration of action of moving object
If the volume of PCM charged in the chamber is increased to extend cooling duration, then the cooling operation duration is improved, but the structure becomes more complex requiring additional components
Solution Approach 1:
The chamber is designed to serve multiple functions: it contains the PCM for cooling, provides structural support, and incorporates the cushioning member for impact protection. This multi-functionality allows the chamber to accommodate increased PCM volume for extended cooling duration while avoiding additional complex structural components.
3Temperature
If a separate pressing member and coupling member are installed to increase contact with the user's head, then the cooling effectiveness is improved, but the device complexity increases
Solution Approach 1:
The chamber is designed to integrate multiple functions including PCM containment, structural support, and user head contact. By combining these functions into a single integrated component rather than using separate pressing and coupling members, the device achieves improved cooling effectiveness through better head contact while maintaining structural simplicity.
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 improves cooling effectiveness by increasing contact with the user's head, extends the PCM's cooling duration, and enhances safety by providing impact protection, allowing for simpler structural changes for various applications.
Implementation Method 1
a phase change material (PCM), which changes a phase between a solid state and a liquid state at room temperature
Implementation Method 2
as the PCM absorbs a heat around the user's head, it melts and changes from the solid state to the liquid state, providing a cooling effect
Implementation Method 3
each of the plurality of chambers includes a cushioning member that absorbs and alleviates an external impact
Data Source
AI summary
A head cooling device includes a central portion that has a predetermined volume of space and is seated on a top portion of the user's head; and a plurality of wing portions radially connected to the central portion and extending in a fan shape, wherein each of the wing portions includes a plurality of chambers each having a predetermined volume of space in which a phase change material is charged, and a plurality of bridges configured to partition and connect each of the plurality of chambers. The central portion and each of the plurality of chambers further incudes a cushioning member to protect the user's head and improve safety by absorbing and alleviating an impact applied from outside.