Washing Machine Chamber Design for Turbidity Detection Accuracy
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Solution Overview
Problem
Conventional washing machines suffer from inaccurate turbidity measurements due to sloshing and bubbling of washing water, which affects the reliability of water quality detection.
Innovation Solution
A washing machine design featuring a chamber with multiple openings for smooth water circulation and a water quality detector positioned below the tub, along with a check valve and pump system to minimize interference from water movement, ensuring accurate water quality detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the turbidity sensor is positioned at the bottom of the tub to detect water quality, then the sensor can monitor the washing water, but the measurement accuracy deteriorates due to sloshing and bubbling of washing water
Solution Approach 1:
The patent divides the tub into two functional spaces: a washing space for the drum and laundry, and a separate detection space (chamber) for the turbidity sensor. The chamber is connected to the tub through multiple openings, allowing water circulation while isolating the sensor from direct exposure to sloshing and bubbling, thereby resolving the contradiction between measurement accuracy and harmful water movement effects.
Solution Approach 2:
The chamber acts as an intermediary between the washing water and the turbidity sensor. Water flows from the tub through openings into the chamber, allowing the sensor to detect water quality without being directly exposed to the harmful effects of sloshing and bubbling that occur in the main washing space.
2Reliability
If the detector is positioned in the washing space to directly monitor water quality, then real-time detection is possible, but the detection space is mixed with the washing space causing measurement interference
Solution Approach 1:
The patent segments the washing machine into distinct functional zones: the washing space containing the drum and laundry, and a separate detection space in the form of a chamber housing the turbidity sensor. This spatial segmentation allows reliable water quality detection while maintaining clear separation between washing and detection functions, avoiding measurement interference.
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 solution enhances measurement accuracy by isolating the detection space from the washing space and reducing the impact of water sloshing and bubbling, resulting in stable and reliable turbidity sensor output.
Implementation Method 1
an outlet, through which the washing water introduced through the inlet is discharged and which is expanded by hydraulic pressure upon activation of the pump
Implementation Method 2
The check valve may be made of a flexible material having elasticity
Data Source
AI summary
A washing machine includes a tub for containing washing water, a drum rotatably disposed in the tub, a chamber communicating with the tub through a plurality of openings in which washing water is introduced from the tub through at least one of the plurality of openings and the introduced washing water is discharged to the tub through at least one of the remaining openings, and a water quality detector for detecting the quality of washing water in the chamber.