Washer Drum Water Balancer for Eccentricity and Vibration Control
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Solution Overview
Problem
Conventional laundry treatment apparatuses experience drum eccentricity issues due to uneven mass distribution, leading to vibrations and noise, which existing ball or fluid balancers struggle to fully mitigate.
Innovation Solution
A laundry treatment apparatus with a balancer system that includes a centrifugal channel device and nozzle to selectively distribute water into multiple balancers around the drum, using centrifugal force to balance the drum's rotation and reduce eccentricity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a ball balancer or fluid balancer is used to reduce drum eccentricity, then vibration and noise are reduced, but the balancer structure becomes complex and the effectiveness is limited
Solution Approach 1:
The drum circumference is divided into multiple segments with balancers distributed at different positions. Instead of using a single complex balancer system, multiple simpler balancer units are segmented and distributed around the drum, each handling local mass distribution issues independently, thereby reducing overall system complexity while maintaining effectiveness.
Solution Approach 2:
Water is used as a balancing medium instead of traditional ball or fluid balancer mechanisms. Water is supplied to the drum through hydraulic means, allowing dynamic adjustment of mass distribution without complex mechanical balancer structures. This hydraulic approach simplifies the balancer system while effectively reducing vibration and noise.
2Stability of the object's composition
If water is supplied to the drum to balance mass distribution, then drum eccentricity is reduced, but water consumption increases
Solution Approach 1:
Water is supplied to the drum in periodic cycles rather than continuously. The water supply system activates only when mass distribution imbalance is detected, delivering water to specific balancer positions during rotation. This periodic action maintains proper mass distribution while minimizing unnecessary water consumption.
Solution Approach 2:
Water is supplied locally to specific balancer positions on the drum rather than uniformly across the entire drum surface. The water supply system targets specific areas where mass distribution correction is needed, based on the rotational position and detected imbalance, thereby reducing overall water consumption while achieving effective balancing.
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 system effectively reduces drum eccentricity by distributing water to specific balancers, enhancing balance and minimizing vibrations and noise during rotation.
Implementation Method 1
A laundry treatment apparatus with a balancer system that includes a centrifugal channel device and nozzle to selectively distribute water into multiple balancers around the drum, using centrifugal force to balance the drum's rotation and reduce eccentricity
Data Source
AI summary
Disclosed is a laundry treatment apparatus including a balancer capable of active control. The laundry treatment apparatus includes a cabinet 1 with a laundry feeding hole formed therein, a tub 10 provided within the cabinet and for holding washing water, a drum 20 rotatably installed around a rotation axis which may be forward inclined within the tub for holding laundry, a driving unit 30 to rotate the drum, a balancer 110 disposed in the drum and having an internal space therein, wherein water is selectively introduced into the internal space of the balancer when the drum is rotated, a centrifugal channel device 140a disposed on the backside of the drum, rotated along with the drum, and having an opening portion formed toward a back direction so that water is supplied to the opening portion and guided into the internal space of the balancer, and a nozzle 180 disposed at the back of the drum, spaced apart from the drum, to spray water toward the opening portion.