Washing machine
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Solution Overview
Problem
Conventional washing machine suspension devices struggle to effectively attenuate horizontal vibration displacement, leading to increased tub vibration and reduced washing capacity due to limitations in vibration attenuation, especially when the tub diameter is increased within a fixed frame width.
Innovation Solution
The implementation of a stabilizer unit with stabilizer bars interconnected between suspension units and the tub, utilizing torsional and bending forces to mitigate horizontal vibration displacement, thereby enhancing vibration attenuation and tub stability during washing and dehydration processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the tub diameter is increased within the same frame width, then the tub capacity is improved, but the horizontal vibration displacement increases due to reduced attenuation force
Solution Approach 1:
The suspension system is segmented into two functional parts: the original spring-damper suspension units for vertical vibration attenuation, and the added stabilizer bars forming a separate stabilization mechanism for horizontal vibration control. This segmentation allows each component to specialize in its respective vibration direction without interfering with the other.
Solution Approach 2:
The invention transitions from a one-dimensional vertical suspension system to a two-dimensional vibration control system by adding stabilizer bars that operate in the horizontal dimension. The stabilizer bars connect suspension units across the width of the frame, creating a stabilization mechanism that operates perpendicular to the original suspension direction.
2Volume of moving object
If the suspension attachment angle is set to a small angle, then the tub capacity can be increased, but the horizontal attenuation force decreases
Solution Approach 1:
The stabilizer bars act as intermediary elements that transfer and distribute horizontal forces between multiple suspension units. Instead of relying on the attachment angle of single suspension units, the stabilizer bars create a distributed stabilization network that provides horizontal attenuation force through the entire suspension system.
3Device complexity
If the conventional suspension device is used, then the structure is simple, but the tub vibration cannot be effectively controlled
Solution Approach 1:
The invention merges the vertical suspension function (spring-damper units) with the horizontal stabilization function (stabilizer bars) into a unified suspension system. The stabilizer bars are integrated with the existing suspension units, creating a combined system that handles both vertical and horizontal vibrations through a coordinated mechanism.
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 solution effectively reduces tub vibration displacement, increases tub capacity within the same frame size, and minimizes contact between the tub and the frame, resulting in improved washing efficiency and reduced noise.
Implementation Method 1
limits tub displacement according to the attenuation effect caused by torsional force and bending force of a stabilizer unit
Implementation Method 2
limits tub displacement according to the attenuation effect caused by torsional force and bending force of a stabilizer unit
Implementation Method 3
The spring for absorbing vibration is configured to attenuate vibration using frictional force based on a displacement
Implementation Method 4
a stabilizer bar configured to enclose some parts of a lateral surface of the tub in a circumferential direction
Data Source
AI summary
A washing machine includes a plurality of suspension units through which a tub is supported by a cabinet, and a stabilizer unit mounted to the tub. When horizontal vibration displacement of the tub occurs by unbalance mass during washing/dehydration processes, the washing machine limits tub displacement according to the attenuation effect caused by torsional force and bending force of the stabilizer unit, resulting in reduction of excessive vibration.