Laundry washing machine with improved washing performances
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Solution Overview
Problem
Existing laundry washing machines face issues with uneven distribution of washing/rinsing liquid, leading to incomplete laundry treatment, high water and additive consumption, and bulky additive housing, which obstructs space for increased load capacity.
Innovation Solution
A laundry washing machine with an electric additive treating device mounted in the drum generates a solution of washing/rinsing additive and water directly within the drum, using wireless power transmission to the device, reducing the need for external conduits and additive housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard washing machine drum design is used, then the structure is simple and easy to manufacture, but washing performance is insufficient and energy consumption is high
Solution Approach 1:
The drum is segmented into multiple functional zones with different surface characteristics. The drum surface includes hydrophilic regions and hydrophobic regions arranged in specific patterns, creating distinct washing zones that handle different fabric types and soil types separately, thereby improving overall washing performance through functional segmentation
Solution Approach 2:
Different regions of the drum surface are given different local qualities through varying surface treatments. Hydrophilic coatings are applied to regions handling cotton and linen fabrics, while hydrophobic coatings are applied to regions handling synthetic fabrics, optimizing washing effectiveness for each fabric type in its specific location
2Reliability
If high energy consumption is used for washing, then washing performance improves, but energy efficiency deteriorates
Solution Approach 1:
The washing machine implements periodic action through alternating hydrophilic and hydrophobic phases during the washing cycle. The drum rotates through zones with different surface properties in sequence, creating periodic variations in water-fabric interaction that enhance soil removal efficiency while reducing the need for continuously high energy input
Solution Approach 2:
The system changes physical parameters dynamically by altering the surface energy characteristics of the drum through periodic exposure to different coated regions. This parameter change approach allows effective washing at lower energy levels by utilizing surface chemistry variations rather than relying solely on thermal and mechanical energy
3Reliability
If conventional washing methods are used, then the process is simple to operate, but fabric damage occurs and washing quality is insufficient
Solution Approach 1:
The washing machine performs self-service through automatic detection and adaptation. The control system automatically detects fabric type, soil level, and washing conditions, then adjusts the drum rotation speed, water flow patterns, and heating parameters without user intervention, achieving high washing quality while maintaining simple operation
Solution Approach 2:
The system incorporates feedback mechanisms that continuously monitor washing progress and fabric condition. Sensors detect parameters such as water temperature, drum vibration, and energy consumption, feeding this information back to the control system which adjusts operating parameters in real-time to optimize washing quality while preventing fabric damage
Data Source
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AI summary
The present invention is related to a laundry washing machine (10) comprising: a cabinet (20), a washing tub (30) housed inside the cabinet (20), a drum (50) rotatably housed inside the cabinet (20), an electric additive treating device (200) mounted in/on the drum (50) and configured for treating a washing and/or rinsing additive (8) loaded within the drum (50) in such a way to generate within the drum (50) a solution (14) of washing and/or rinsing additive (8) water (3). The invention is also related to a method for operating such a laundry washing machine (10), comprising the following steps: - loading a washing and/or rinsing additive (8) within the drum (50); - loading laundry within the drum (50); - activating the electric additive treating device (200) for causing the mix of the washing and/or rinsing additive (8) with water (3) and generating the solution (14) within the drum (50); - providing the solution (14) to the laundry loaded within the drum (50).