A method for washing laundry in a laundry washing machine and laundry washing machine implementig the method
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Solution Overview
Problem
Existing laundry washing machines lack effective methods for automatically determining soil levels and optimizing washing cycles to improve cleaning efficiency and detergent removal.
Innovation Solution
Incorporating a turbidimeter device to measure turbidity and an electrical conductivity detecting device to determine soil levels and adjust washing cycles, including a soil removal phase and dynamic rinse cycle based on detergent type, to enhance cleaning and detergent removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual soil level selection is used, then device complexity is reduced, but measurement precision and automatic optimization are worsened
Solution Approach 1:
The patent replaces manual mechanical selection with optical measurement systems. A turbidimeter measures the turbidity of wash water to automatically determine soil level, substituting user manual selection with automated optical detection and control.
Solution Approach 2:
The washing machine performs self-diagnosis and self-adjustment by automatically measuring soil levels through turbidity detection and adjusting washing parameters without user intervention, enabling the system to serve itself in determining optimal washing conditions.
2Productivity
If standard washing cycles are used, then device complexity is reduced, but cleaning efficiency and adaptability are worsened
Solution Approach 1:
The patent implements dynamic washing cycles that automatically adjust washing time, water temperature, and detergent dosage based on real-time turbidity measurements, transforming fixed standard cycles into adaptive dynamic processes that optimize cleaning efficiency.
Solution Approach 2:
The system continuously monitors wash water turbidity and uses this feedback to automatically adjust washing parameters, creating a closed-loop control system that adapts the washing cycle based on actual soil removal progress.
3Measurement precision
If fixed rinse cycle is used, then device complexity is reduced, but detergent removal effectiveness is worsened
Solution Approach 1:
The patent replaces fixed mechanical rinse timing with electrical conductivity measurement systems. An electrical conductivity sensor detects detergent residue in real-time, substituting predetermined rinse schedules with automated chemical composition detection and control.
Solution Approach 2:
The system automatically determines when rinsing is complete by self-monitoring electrical conductivity levels, enabling the rinse cycle to serve itself in determining optimal termination points without user intervention or fixed timing.
4Productivity
If manual detergent dosing is used, then device complexity is reduced, but washing optimization is worsened
Solution Approach 1:
The system uses turbidity measurement feedback to automatically control detergent dosing, adjusting the amount and timing of detergent addition based on real-time soil level detection to optimize washing effectiveness.
Solution Approach 2:
The automatic dosing device pre-calculates and prepares detergent addition based on predicted soil levels from initial turbidity measurements, performing preliminary dosing actions before the washing cycle begins or at optimal intermediate points.
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 method automatically determines soil levels and optimizes washing cycles, leading to improved cleaning efficiency and effective removal of detergent and dirt from laundry.
Implementation Method 1
a turbidity detecting device that measures the turbidity of the liquid flowing therethrough
Implementation Method 2
an electrical conductivity detecting device to determine soil levels and adjust washing cycles
Data Source
Figure 1
Figure 2
Figure 3~3A
AI summary
The invention relates to a method for washing laundry in a laundry washing machine (1) comprising a washing tub (3) external to a washing drum (4) and a turbidity detecting device (52). The method comprises a step of determining (180) the soil level of the laundry by means of measurement of turbidity through the turbidity detecting device (52) and a step of performing (230) at least one soil removal phase if the soil level is high.