Bubble Washing Drum for Low-Water Gentle Laundry Cleaning
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Solution Overview
Problem
Conventional washing machines consume large amounts of water and energy, and can damage delicate laundry like wool or silk due to the falling and friction caused by rotation during washing.
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 washing operation, then cleaning effectiveness is improved, but water consumption and energy consumption increase significantly
Solution Approach 1:
The invention changes the physical state of the washing medium from liquid water to gas-phase bubbles. By controlling parameters such as detergent concentration in the liquid phase (5-20%) and bubble generation conditions, the system achieves effective cleaning with minimal water consumption. The bubbles provide high surface area contact between detergent and laundry without requiring large volumes of water.
Solution Approach 2:
The invention uses pneumatic principles by generating bubbles through gas injection into detergent solution. The bubble generation device creates numerous small bubbles that rise and contact the laundry, providing cleaning action through gas-liquid-solid interaction. This pneumatic approach replaces traditional hydraulic water-based washing, dramatically reducing water consumption while maintaining cleaning effectiveness.
2Productivity
If rotational drum rotates at high speed to agitate laundry, then washing effectiveness is improved, but friction and mechanical damage to delicate fabrics increase
Solution Approach 1:
The invention replaces the mechanical agitation system (rotational drum with high-speed rotation) with a chemical-biological system based on bubble action. Enzymatic detergent combined with gentle bubble movement substitutes for mechanical force, achieving effective washing without the friction and impact forces that cause fabric damage. This is particularly beneficial for delicate fabrics like wool and silk.
Solution Approach 2:
The bubble generation operates in periodic cycles rather than continuous high-speed mechanical agitation. Bubbles are generated, rise through the laundry, pop, and are replenished in repeated cycles. This periodic gentle action provides sufficient washing effectiveness without the sustained high-velocity friction of rapid drum rotation.
3Quantity of substance
If water level is increased to submerge laundry for washing, then cleaning coverage is improved, but energy consumption for heating water increases
Solution Approach 1:
The invention changes the washing medium from liquid water requiring heating to gas-phase bubbles that do not require thermal energy. By operating in the gas phase rather than liquid phase, the system eliminates the need for water heating while maintaining cleaning effectiveness through bubble-laundry contact and enzymatic action.
Solution Approach 2:
The system uses pneumatic bubble generation instead of hydraulic water immersion. Bubbles provide cleaning coverage through their rising motion and surface contact with laundry, replacing the need for water to submerge and surround the fabric. This dramatically reduces both water volume and the energy required to heat that water.
4Quantity of substance
If detergent concentration is increased for better cleaning, then cleaning effectiveness is improved, but water solubility and distribution become problematic
Solution Approach 1:
The invention uses pneumatic bubble generation to deliver high-concentration detergent to the laundry surface without requiring large volumes of water for dissolution and distribution. The bubble generation device directly introduces concentrated detergent solution into gas phase, creating detergent-rich bubbles that deposit high concentrations of cleaning agents onto the fabric during the popping process.
Solution Approach 2:
The system changes the delivery mechanism from liquid-phase diffusion to gas-phase transport. High-concentration detergent solution is converted into bubbles that rise and contact laundry directly. This parameter change allows much higher effective detergent concentrations at the cleaning interface without the solubility and distribution limitations that constrain liquid-phase washing systems.
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
Reduces water and energy consumption, minimizes damage to delicate fabrics by using bubbles as a cushion, and achieves higher cleaning efficiency with controlled detergent concentration.
Implementation Method 1
generating the bubbles from detergent water as a mixture of the detergent liquid and the water, followed by supplying the bubbles to laundry
Implementation Method 2
allows the bubbles to act as a cushion capable of reducing friction between the laundry
Data Source
AI summary
A washing machine including a rotational drum into which laundry is input, a water tub to perform a washing operation using bubbles, a water supply device to supply water, a detergent liquid supply device to supply detergent liquid, an air supply device to supply air required for the generation of the bubbles, and a controller to control the water supply device and the detergent liquid supply device to supply the water and the detergent liquid into a space between the rotational drum and the tub, to control the air supply device to generate the bubbles by supplying air to detergent water as a mixture of the water and the detergent liquid, to supply the bubbles into the laundry, and to perform the washing operation using the bubbles.