Drum Washer Suspension Layout for Vibration Damping and Larger Tub Capacity
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Solution Overview
Problem
Conventional drum type washing machines face issues with vibration imbalance during washing and dewatering, limiting capacity due to the need for spacing between the tub and cabinet, and inconvenient laundry loading and unloading requirements that necessitate bending or sitting.
Innovation Solution
A drum type washing machine design featuring a tub fixed directly within the cabinet, a lateral laundry loading entrance, a motor assembly positioned on one side of the drum, and a suspension assembly that includes main and sub-dampers to attenuate vibrations, allowing for increased capacity and convenient loading without bending.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tub is spaced apart from the cabinet to prevent collision during vibration, then the cabinet and tub can avoid collision, but the capacity or volume of the tub is restricted
Solution Approach 1:
The patent introduces a suspension assembly including dampers and springs that are pre-installed between the tub and cabinet to cushion vibrations before they can cause collision. This allows the tub to be positioned closer to the cabinet while still preventing collision through the cushioning effect of the suspension components.
2Device complexity
If the door and openings are provided to face the front side for conventional loading, then the structure is simple, but the user has to bend or sit down to load laundry causing inconvenience
Solution Approach 1:
The patent repositions the door opening from the front horizontal plane to the top vertical plane of the tub. This dimensional change allows users to load laundry from above in a standing position, eliminating the need to bend or sit down, while the overall structural complexity remains manageable through straightforward reconfiguration.
3Stability of the object's composition
If both drum and tub vibrate as one body during imbalance, then the vibration is generated, but the springs and dampers can attenuate the vibration
Solution Approach 1:
The patent extracts the vibration attenuation function from the rigid connection between drum and tub by introducing a separate suspension assembly. The dampers and springs are specifically designed to absorb and attenuate vibrations, separating this harmful vibration transmission from the normal operational movement of the drum and tub.
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 design effectively attenuates vibrations, increases the tub's capacity by eliminating the need for excessive spacing, and allows for easy laundry loading and unloading without the need to bend, enhancing user convenience and overall machine stability.
Implementation Method 1
a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum
Data Source
AI summary
A drum type washing machine is provided, in which vibration is efficiently attenuated, by a maximum capacity within a size-fixed cabinet is provided, and by which a user does not bend over or sit down to load laundry into the washing machine. The drum type washing machine includes a cabinet forming an exterior of the drum type washing machine, a tub fixed within the cabinet, the tub having a laundry loading entrance at an outer circumference of the tub, a drum rotatably provided within the tub, the drum having an opening on a lateral side of the drum to communicate with the laundry loading entrance of the tub, a motor assembly provided next to one side of the drum to rotate the drum, and a suspension assembly provided to support a weight of the drum and attenuate vibration of the drum.