Method and apparatus for washing machine dehydration, and washing machine
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Solution Overview
Problem
Conventional washing machines face challenges in completely dehydrating clothes with good water absorbability, especially when washing small loads, due to high eccentricity values leading to low dehydration rotational speeds and incomplete drying.
Innovation Solution
A method and apparatus that detect and adjust eccentricity values to determine corresponding dehydration rotational speeds, performing dehydration operations based on comparisons with preset values, and incorporating leveling operations to optimize drying efficiency, ensuring complete dehydration of clothes with good water absorbability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the washing machine enters dehydration with high eccentricity value, then the dehydration process can start, but the dehydration rotational speed is low and clothes cannot be dehydrated completely
Solution Approach 1:
The system performs preliminary leveling operations before dehydration to reduce eccentricity value. By detecting the initial high eccentricity value and executing leveling actions ( redistributing clothes in the drum ), the system prepares optimal conditions for high-speed dehydration, ensuring both productivity and reliability.
Solution Approach 2:
The system continuously monitors eccentricity value during dehydration and adjusts rotational speed accordingly. When eccentricity is detected to be high, the system reduces speed or triggers leveling; when eccentricity decreases, it increases speed to maximize dehydration efficiency while maintaining completeness.
2Productivity
If the washing machine uses high dehydration rotational speed, then dehydration efficiency is improved, but the high eccentricity value causes vibration and instability
Solution Approach 1:
The system dynamically adjusts dehydration rotational speed based on real-time eccentricity value. Instead of using a fixed high speed, the control system modulates speed according to the current load distribution state, allowing high efficiency when stable and reducing speed when eccentricity causes instability.
Solution Approach 2:
The system changes the operational parameter (rotational speed) based on the measured eccentricity value. By establishing a correspondence between eccentricity levels and appropriate rotational speeds, the system optimizes the balance between dehydration efficiency and operational stability.
3Reliability
If the washing machine performs leveling operation repeatedly, then the eccentricity value is reduced and dehydration completeness is improved, but the dehydration time increases
Solution Approach 1:
The system performs leveling operations partially - only when eccentricity value exceeds thresholds that would prevent effective dehydration. Rather than continuous leveling, the system intervenes selectively based on detected conditions, reducing unnecessary time loss while achieving sufficient eccentricity reduction for complete dehydration.
Solution Approach 2:
The system skips leveling operations when eccentricity is already within acceptable ranges, rushing directly to high-speed dehydration. By detecting favorable conditions and skipping unnecessary leveling steps, the system minimizes time loss while ensuring dehydration completeness when needed.
Data Source
AI summary
Disclosed are a method and apparatus for washing machine dehydration, and a washing machine. The method includes: step 1, detecting a current eccentricity value to serve as a first eccentricity value, and determining a first dehydration rotational speed value corresponding to the first eccentricity value; step 2, performing a corresponding dehydration operation; step 3, detecting another current eccentricity value to serve as a second eccentricity value, and determining a second dehydration rotational speed value corresponding to the second eccentricity value; step 4, if the second eccentricity value is smaller than the first eccentricity value, performing a corresponding dehydration operation, assigning the value of the second eccentricity value to the first eccentricity value and then performing the step 3; and step 5, if the second eccentricity value is greater than or equal to the first eccentricity value, performing a leveling operation, and then performing the step 3.