Multi-drum washing machine drainage control method
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Solution Overview
Problem
Multi-drum washing machines face challenges with vibration and noise during the drainage and dehydration processes, particularly due to uneven water distribution and high center of gravity, leading to inefficiencies and potential damage.
Innovation Solution
A control method that synchronizes the drainage and dehydration processes between the two drums, ensuring that one drum does not drain while the other is dehydrating, and allowing water to be reused when conditions are met, thereby maintaining stability and reducing vibration through strategic timing and water management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If one washing drum drains water while the other is dehydrating, then the drainage process can be completed efficiently, but the vibration and noise increase due to uneven water distribution and high center of gravity
Solution Approach 1:
The control system checks whether the other drum will enter dehydration process within a predetermined time before allowing drainage to start. This preliminary timing action prevents the harmful situation of draining during dehydration by anticipating the future state of the other drum, thus avoiding vibration and noise while maintaining drainage efficiency
2Object-affected harmful factors
If the washing machine waits for dehydration to complete before draining, then vibration is reduced, but the total processing time increases
Solution Approach 1:
Instead of waiting for dehydration to complete, the system performs preliminary timing to determine if dehydration will start within a predetermined time window. This allows drainage to be scheduled optimally - early enough to avoid vibration during dehydration, but not unnecessarily delayed, thus balancing vibration reduction with time efficiency
3Productivity
If drainage and dehydration processes are allowed to run simultaneously in multi-drum washing machine, then productivity is improved, but the high center of gravity causes larger vibration and noise
Solution Approach 1:
The control system continuously monitors the operational state of both drums and uses feedback control to determine whether drainage should proceed. By checking the future dehydration timing and comparing it with the drainage schedule, the system dynamically adjusts the drainage timing to avoid the harmful vibration condition while maintaining overall productivity
Data Source
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AI summary
A multi-drum washing machine drainage control method, the multi-drum washing machine at least comprising a first washing drum (1) and a second washing drum (2); the method comprising: when the first washing drum (1) reaches a drainage process, determining whether the second washing drum (2) is draining; if yes, then the first washing drum (1) waits for the second washing drum (2) to finish draining before starting to drain; and if not, then determining whether the first washing drum (1) waits for the second washing drum (2) to finish draining before starting to drain. Alternatively, when the first washing drum (1) reaches the drainage process, determining whether the second washing drum (2) is draining or dehydrating; if yes, then the first washing drum (1) waits for the second washing drum (2) to finish draining before starting to drain; and if not, then determining whether the first washing drum (1) waits for the second washing drum (2) to finish draining before starting to drain.