Cooling Garment Waterflow Structure for Repeated Evaporative Cooling
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Solution Overview
Problem
Existing cooling garments fail to maintain effective cooling as the cold water absorbed in the absorbent material reaches room temperature, limiting the absorption of subsequent water pours and reducing cooling efficacy.
Innovation Solution
A cooling garment design featuring a front and back material structure with an inner waterproof layer, an outer moisture-permeable layer, and a nonwoven fabric intermediate layer that absorbs and stores water, along with a water inlet and drainage outlet, and optionally a slope pressing bonding part to facilitate water movement by gravity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cold water is poured into the absorbent material, then cooling effect is achieved through evaporation, but the absorbent material cannot absorb more water once it reaches room temperature
Solution Approach 1:
The absorbent material is divided into multiple layers with different functions: a first absorbent layer for initial water absorption, a second absorbent layer for additional water storage, and a waterproof layer to contain the water. This segmentation allows the system to hold larger quantities of water for repeated evaporation cycles.
Solution Approach 2:
The patent changes the physical parameters of the absorbent material by using multiple layers with different absorption capacities and properties. The first layer uses highly absorbent material for rapid uptake, while the second layer provides additional storage capacity, allowing the system to maintain water supply for extended cooling periods.
2Productivity
If the absorbent material is made highly absorbent, then initial cooling is effective, but the material becomes saturated and cannot accept more water
Solution Approach 1:
The absorbent material is divided into multiple layers with different functions: a first absorbent layer for initial water absorption, a second absorbent layer for additional water storage, and a waterproof layer to contain the water. This segmentation allows the system to hold larger quantities of water for repeated evaporation cycles.
Solution Approach 2:
The multi-layer structure ensures continuous water availability for evaporation. As water is consumed in the first layer through evaporation, the second layer continues to supply moisture, maintaining uninterrupted cooling action over extended periods.
3Ease of operation
If a drainage outlet is added to enable water draining, then repeated cooling operations are possible, but the device complexity increases
Solution Approach 1:
The drainage outlet is positioned at the lower part of the garment, allowing water to drain automatically through gravity without requiring pumps or complex mechanical systems. The structure uses the natural weight of water to achieve self-draining functionality.
Solution Approach 2:
The drainage system utilizes gravitational force and hydraulic principles to enable automatic water drainage. The outlet position and garment design create a natural flow path that allows water to exit the absorbent layers without active pumping mechanisms.
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 garment allows for repeated cooling operations throughout the day by easily pouring and draining cold water, enhancing cooling effectiveness without electrical power, and can further lower body temperature when combined with an air conditioning function garment.
Implementation Method 1
an intermediate layer made of a nonwoven fabric that is arranged between the inner layer and the outer layer, and that absorbs water and stores the absorbed water
Implementation Method 2
a cooling garment is known which is a vest or other garment that can be worn by a person or an animal such as a dog, and in which a water absorbent material absorbing the water is provided in a shape of a surface and which can cool the body by absorbing heat of the body due to evaporating the water
Implementation Method 3
the slope pressing bonding part is inclined with respect to a horizontal line perpendicular to a centerline of a longitudinal direction of the cooling garment so that the water moves from an upper part of the cooling garment toward a lower part of the cooling garment by gravity
Data Source
AI summary
A cooling garment includes a front side material and a back side material arranged on a front side or a back side of a body. The front side material or the back side material has an inner layer arranged closest to the body that is waterproof, an outer layer arranged farthest from the body that is moisture permeable and an intermediate layer made of a nonwoven fabric arranged between the inner layer and the outer layer and that absorbs water and stores the absorbed water. A water inlet that supplies the water to the intermediate layer is arranged at an upper part of the front side material or the back side material and a drainage outlet that drains the water is arranged at a lower part of the front side material or the back side material when the cooling garment is attached to the body.