Method for washing and washing machine
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Solution Overview
Problem
Drum-type washing machines often experience unbalancing of laundry during spinning, leading to noise and vibration due to tangling, which existing methods fail to effectively address during wash or rinse cycles.
Innovation Solution
A method involving a washing machine that supplies wash water mixed with detergent to the tub, rotates the drum to repeatedly accelerate and decelerate the laundry, and drains the water, allowing for balancing during wash or rinse cycles, enabling direct main-spinning if the unbalanced condition is within an allowable value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the drum is rotated at high speed for spinning, then the washing efficiency is improved, but the laundry becomes unbalanced causing noise and vibration
Solution Approach 1:
The patent applies preliminary action by performing a balancing operation before the high-speed spin cycle. The drum rotates at a low speed (e.g., 5-15 rpm) for a predetermined time (e.g., 5-10 minutes) to redistribute the laundry evenly, preventing unbalance during subsequent high-speed spinning. This preliminary low-speed rotation eliminates the cause of noise and vibration before they can occur during efficient high-speed washing.
2Object-generated harmful factors
If the drum is rotated slowly to balance laundry, then noise and vibration are reduced, but the washing cycle time increases
Solution Approach 1:
The patent implements periodic action by using intermittent or oscillating rotation of the drum during the balancing phase. Instead of continuous slow rotation, the drum rotates back and forth or alternates direction in periodic intervals, achieving effective laundry redistribution in a shorter time period. This periodic motion pattern reduces the total balancing time while maintaining the noise and vibration reduction benefits.
3Stability of the object's composition
If the drum is rotated repeatedly to disperse laundry, then balancing is improved, but the energy consumption increases
Solution Approach 1:
The patent applies dynamics by varying the rotation speed and direction of the drum during the balancing phase. The drum alternates between forward and reverse rotation at different speeds, creating dynamic motion patterns that effectively disperse laundry clusters. This dynamic approach achieves better balancing uniformity with fewer rotation cycles compared to static single-direction rotation, thereby reducing overall energy consumption.
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
This approach effectively disperses laundry, reduces noise and vibration, shortens the spin cycle time, and conserves energy by allowing direct main-spinning when the laundry is balanced, thus improving overall washing efficiency and reducing cycle duration.
Implementation Method 1
repeatedly falling laundry within a drum provided in the tub containing the wash water by rotating the drum
Data Source
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AI summary
A method for washing laundry and a washing machine, in which balancing of the laundry load is effectively carried out. The method for washing includes supplying wash water mixed with a detergent, spinning or rinsing the laundry by rotating the washing machine drum in which the laundry is located, thereby causing the laundry to be repeatedly lifted within and then fall towards the bottom of the drum. The method further involves balancing the laundry by repeatedly accelerating and decelerating the drum. The wash water is then drained.