Washer Drum Rinsing Control With Pre-Fill and Fluid Circulation
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Solution Overview
Problem
Laundry treatment machines face inefficiencies in the washing and rinsing processes, particularly in the timing and coordination of drum rotation and fluid supply, leading to prolonged operation times and reduced energy efficiency.
Innovation Solution
A laundry treatment machine with a controller that synchronizes the rotation of the drum with the supply and circulation of wash fluid, allowing for optimized fluid distribution and absorption during washing and rinsing operations, thereby reducing the time required for these processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drum rotates and fluid is supplied during washing operation, then washing effectiveness is improved, but operation time is prolonged
Solution Approach 1:
The controller supplies fluid to the drum before the washing operation begins, so that the drum is already filled with fluid when rotation starts. This preliminary fluid supply eliminates the need to supply fluid during rotation, reducing total operation time while maintaining washing effectiveness
Solution Approach 2:
The system maintains continuous washing effectiveness by ensuring fluid is always present in the drum through preliminary supply and optimized timing, eliminating idle time where neither washing nor fluid supply is occurring, thus reducing total operation time without compromising effectiveness
2Reliability
If the drum rotates and fluid is supplied during rinsing operation, then rinsing effectiveness is improved, but operation time is prolonged
Solution Approach 1:
The controller supplies fluid to the drum before the rinsing operation begins, ensuring the drum is pre-filled with fluid. This preliminary action eliminates the need for continuous fluid supply during drum rotation, significantly reducing rinsing operation time while maintaining rinsing effectiveness
Solution Approach 2:
The system uses periodic drum rotation with optimized fluid supply timing, where fluid is supplied at specific intervals before rotation phases. This periodic approach maintains effective rinsing contact between fluid and laundry while minimizing total fluid supply time and operation duration
Data Source
AI summary
A laundry treatment machine and a washing method therefor are provided. During a rinsing operation, the laundry treatment machine may rotate a drum while supplying fluid into the drum. In addition, the laundry treatment machine may control a fluid circulation device to circulate the fluid, and thus, to spray the circulated fluid into the drum during the rotation of the drum. The drum realizes at least one of first through fourth motions. The laundry treatment machine may perform various rinsing operations in consideration of the fluid level in a tub.