Low-Density Wool Dryer Ball for Faster Clothes Drying
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Solution Overview
Problem
Conventional dryer balls, whether made of plastic or wool, are ineffective in significantly reducing drying time and often result in dense, hard balls that can unravel over use, failing to efficiently soften and fluff clothing.
Innovation Solution
A wool dryer ball with a reduced density and increased size, manufactured by folding wool material into a spherical shape, placing it in a porous bag, and undergoing a wet felting process to create air pockets and maintain structure, which traps heat and absorbs moisture, thereby enhancing drying efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional dryer balls are made dense and hard to soften and fluff clothing, then they can accomplish the objective of softening clothing, but they cannot significantly reduce drying time
Solution Approach 1:
The patent changes the density parameter of the dryer ball from conventional high density to a lower density range of 0.06-0.09 g/cm³. This parameter change allows the ball to be less dense while maintaining sufficient weight (54-60g) to effectively soften and fluff clothing, while the lower density enables better air circulation and drying time reduction.
Solution Approach 2:
The patent creates local quality variations within the dryer ball by incorporating air pockets throughout the wool structure. This allows different regions of the ball to have different densities - the outer shell maintains structural integrity for beating clothes while internal air pockets reduce overall density for improved drying efficiency.
2Productivity
If wool dryer balls are made large to reduce density, then they can improve drying time, but they may become too bulky for standard dryers
Solution Approach 1:
The patent optimizes the volume parameter to a specific range of 600-900 cm³, which balances the need for low density (for drying time reduction) with the constraint of fitting within standard dryer drums. This volume range, combined with the low density, achieves the desired weight and performance characteristics.
3Stability of the object's composition
If wool material is tightly compacted to form a dense ball, then it maintains structural integrity, but it loses the ability to trap heat and absorb moisture effectively
Solution Approach 1:
The patent utilizes the porous nature of wool material, maintaining a loose, airy structure with air pockets distributed throughout. This porous structure is essential for heat trapping and moisture absorption functions, allowing the wool to effectively interact with the laundry while maintaining structural integrity through proper felting.
Solution Approach 2:
The patent creates local quality variations within the dryer ball by incorporating air pockets throughout the wool structure. This allows different regions of the ball to have different densities - the outer shell maintains structural integrity for beating clothes while internal air pockets reduce overall density for improved drying efficiency.
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 wool dryer ball reduces drying time by 30% to 50% and maintains effectiveness without unraveling, as it distributes heat and moisture evenly, while being soft and spongy, and can be replaced after a certain number of uses.
Implementation Method 1
the wool ball is washed. In some embodiments the wool ball is washed in hot soapy water, then rinsed
Implementation Method 2
A plurality of air pockets is substantially uniformly distributed throughout the wool ball
Data Source
AI summary
A dryer ball is provided for use in a clothes dryer to reduce clothes drying time. The dryer ball has a substantially spherical wool body and a substantially uniform distribution of wool fibers therethrough. The body has a volume in the range of about 600 cm3 to 930 cm3. A method of manufacturing the dryer ball includes providing a piece of wool material weighing in the range of 54 g to 60 g, folding the piece of wool material into a substantially spherical wool ball having a circumference in the range of 43 cm to 53 cm, sealing the wool ball in a porous bag, washing the wool ball in the bag, removing the wool ball from the bag, and allowing the wool ball to air dry.