Detergent Bubble Washing Control for Low-Water Delicate Fabrics
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Solution Overview
Problem
Conventional washing machines consume large amounts of water and energy, and can damage delicate laundry due to the falling and friction caused by rotation, especially when washing items like wool and silk.
Innovation Solution
A washing machine that uses bubbles for cleaning, with a control method to generate detergent-rich bubbles without direct water contact, acting as a cushion to reduce friction and allowing high detergent concentration for effective cleaning, while controlling water and detergent supply to maintain bubble concentration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If water and detergent are supplied in large amounts for conventional washing, then cleaning effectiveness is improved, but water consumption and energy consumption increase
Solution Approach 1:
The patent changes the physical state of the washing medium from liquid water to gaseous bubbles. By controlling the concentration of detergent in the bubble solution and adjusting bubble generation parameters, the system achieves effective cleaning with significantly reduced water consumption. The bubble form increases surface area and detergent exposure to laundry while using less total water.
Solution Approach 2:
The patent utilizes phase transition from liquid detergent solution to gaseous bubbles. The detergent solution is sprayed or injected to form bubbles that rise and contact the laundry surface, providing cleaning action in a gaseous state rather than liquid immersion, thereby reducing water consumption while maintaining cleaning effectiveness.
2Productivity
If rotational drum is used for washing, then washing operation is performed, but friction and falling damage occur to delicate laundry
Solution Approach 1:
The patent employs pneumatic bubble generation instead of mechanical drum rotation. Bubbles are generated and supplied to the laundry in a stationary or gently rotating drum, eliminating the mechanical friction and impact forces that damage delicate fabrics. The pneumatic action of bubbles provides gentle cleaning without harmful mechanical forces.
Solution Approach 2:
The patent replaces the mechanical washing mechanism (rotational drum with falling laundry) with a pneumatic/chemical mechanism (bubble generation and supply). The cleaning action is achieved through bubble contact and detergent chemistry rather than mechanical force, protecting delicate laundry from friction and impact damage.
3Object-affected harmful factors
If bubbles are generated for delicate washing, then friction damage is reduced, but control of detergent concentration becomes complex
Solution Approach 1:
The patent incorporates automatic feedback control where sensors detect bubble concentration and detergent levels, and the system self-adjusts the detergent solution supply to maintain optimal concentration. This self-regulating mechanism simplifies operation while ensuring consistent cleaning performance and protecting delicate laundry.
Solution Approach 2:
The patent uses feedback control systems with sensors to monitor bubble concentration and detergent solution levels. The control system adjusts detergent supply based on real-time measurements, maintaining optimal cleaning conditions without requiring complex manual intervention or oversimplifying the control mechanism.
4Loss of substance
If water supply is reduced for bubble generation, then water consumption decreases, but maintaining bubble concentration becomes difficult
Solution Approach 1:
The patent employs feedback control with sensors that monitor bubble concentration and detergent solution volume. The system automatically adjusts the rate of detergent solution supply to maintain optimal bubble concentration even with reduced water usage, resolving the contradiction between water conservation and concentration maintenance.
Solution Approach 2:
The patent optimizes the concentration parameters of the detergent solution to achieve effective bubble generation with minimal water. By adjusting detergent concentration, spray pressure, and bubble generation rate, the system maintains cleaning effectiveness while minimizing water consumption.
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
This approach reduces water and energy consumption, minimizes damage to delicate items, and enhances cleaning efficiency by using bubbles as a cushion and high detergent concentration, suitable for both delicate and general washing.
Implementation Method 1
generating the bubbles from detergent water as a mixture of the detergent concentrate liquid and the water
Implementation Method 2
generating the bubbles from detergent water as a mixture of the detergent concentrate liquid and the water, followed by supplying the bubbles to laundry
Implementation Method 3
allows the bubbles to act as a cushion capable of reducing friction between the laundry
Implementation Method 4
dissolve the detergent therein to generate detergent liquid of a high concentration
Implementation Method 5
dissolve the detergent therein to generate detergent liquid of a high concentration
Data Source
AI summary
The washing machine can wash laundry using bubbles. The control method includes generating detergent concentrate liquid required for generation of the bubbles, supplying the detergent concentrate liquid and water into a water tub, generating the bubbles from detergent water as a mixture of the detergent concentrate liquid and the water, followed by supplying the bubbles to laundry, and washing the laundry using the bubbles. The bubbles act as a cushion to reduce friction between the laundry, thereby preventing texture of the laundry from being damaged due to the friction between the laundry and strong water stream while allowing dirt on the laundry to be effectively removed due to a high concentration of detergent in the bubbles.