Washer Drum Vibration Isolation for Higher Capacity Cabinets
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Solution Overview
Problem
Conventional laundry machines face challenges in increasing capacity without enlarging the cabinet, as vibration from the motor and drum is directly transmitted to the tub, requiring additional space and structural changes to dampen vibrations effectively.
Innovation Solution
The laundry machine incorporates a vibration transmission blocking member, a suspension unit with cylinder springs and dampers, and ball balancers with specific ball sizes, numbers, and oil characteristics to effectively dampen and support vibrations, allowing the tub to be connected directly to the cabinet without additional damping means, enabling increased tub capacity within the same cabinet size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the tub is enlarged to increase the capacity of the laundry machine, then the capacity is improved, but the cabinet must be enlarged accordingly, causing enlargement of the entire laundry machine
Solution Approach 1:
The vibration sources (motor and drum) are extracted from the tub structure and isolated using a vibration transmission blocking member. This separation allows the tub to be enlarged for increased capacity without proportionally enlarging the cabinet, as the vibration isolation system prevents the need for additional clearance space between the tub and cabinet.
2Object-affected harmful factors
If springs or dampers are installed between the tub and cabinet to damp vibration, then vibration characteristics are improved, but the tub must be separated from the cabinet by a designated interval, preventing capacity increase
Solution Approach 1:
A vibration transmission blocking member is introduced as an intermediary between the vibration sources (motor and drum) and the tub. This blocking member effectively intercepts and blocks vibration transmission, allowing the tub to be positioned closer to the cabinet without compromising vibration damping performance, thereby enabling increased laundry capacity.
3Device complexity
If the motor and drum vibration is directly transmitted to the tub, then the structure is simplified, but the vibration interferes with the cabinet and requires additional damping measures
Solution Approach 1:
The vibration sources are extracted and isolated from the tub using a vibration transmission blocking member. This approach maintains structural simplicity while effectively preventing vibration interference with the cabinet, avoiding the need for complex additional damping measures.
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 design achieves increased laundry capacity without enlarging the cabinet while optimally controlling drum vibrations, reducing noise and maintaining efficient operation during wash and spin cycles.
Implementation Method 1
ball balancers, each of which includes a race, balls contained in the race, and an oil filling the race, provided on the drum
Implementation Method 2
an oil filling the race, provided on the drum
Implementation Method 3
damping and support members provided between the suspension brackets and a base of the cabinet and between the bearing housing and the base of the cabinet. The damping and support members may include cylinder springs and cylinder dampers
Implementation Method 4
cylinder dampers provided between the suspension brackets and the base of the cabinet
Data Source
AI summary
Disclosed is a laundry machine having an increased wash capacity. The laundry machine includes a cabinet, a tub connected to vibration sources through a vibration transmission blocking member, a drum rotatably provided in the tub, a suspension unit to substantially damp and support the vibration sources, and ball balancers, each of which includes a race, balls contained in the race, and an oil filing the race, provided on the drum.