Washing machine
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Solution Overview
Problem
Conventional washing machines face limitations in improving washing effect and dehydration efficiency due to friction issues between the washing tub's flat inner surface and laundry, and the laundry often gets gathered towards the inlet, leading to potential damage during washing or dehydration processes.
Innovation Solution
The washing machine incorporates a washing tub with recessed portions and dehydrating holes arranged in a pattern on its inner surface, including inclined surfaces and protruding portions that guide laundry movement and enhance water drainage, preventing accumulation and improving washing force and dehydration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner surface of the washing tub is made flat, then the structure is simple and easy to manufacture, but the friction between the inner surface and laundry is insufficient, limiting washing effect improvement
Solution Approach 1:
The washing tub inner surface is designed with locally varied properties through recessed portions and protruding portions arranged in patterns. These localized structural changes increase friction and washing force at specific contact points with the laundry, while maintaining a relatively simple overall tub structure that is easy to manufacture.
2Device complexity
If dehydrating holes are provided only in specific locations, then the structure is simple, but dehydration efficiency is limited due to bottleneck phenomenon
Solution Approach 1:
The dehydrating holes are segmented and distributed across multiple pattern sections on the washing tub inner surface. This segmentation allows water to drain from multiple locations simultaneously, preventing dehydration bottleneck and improving overall dehydration efficiency without significantly increasing structural complexity.
3Ease of operation
If the washing tub has a smooth inner surface, then the laundry can move freely, but the laundry gets gathered toward the inlet and may be damaged during washing or dehydration
Solution Approach 1:
The washing tub inner surface features localized recessed and protruding portions that create friction zones. These local quality changes prevent laundry from sliding uncontrollably toward the inlet while still allowing necessary movement for washing, thereby protecting laundry from damage during washing and dehydration operations.
4Strength
If pattern sections are continuously provided on the washing tub surface, then rigidity is increased, but the structure becomes more complex
Solution Approach 1:
The pattern sections are segmented into discrete recessed and protruding portions arranged in specific patterns rather than continuous complex structures. This segmentation provides the necessary rigidity and structural reinforcement while keeping the manufacturing process relatively simple and avoiding excessive structural complexity.
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 increases washing force, improves dehydration efficiency, and prevents laundry from being gathered towards the inlet, thereby reducing the risk of damage and enhancing overall washing performance.
Implementation Method 1
friction between the inner surface of the washing tub and the laundry is not large, such that there is a limitation in improving a washing effect by the friction
Implementation Method 2
dehydrating holes allowing water of the water tub to be introduced into the washing tub and allowing the water of the washing tub to be drained from the washing tub
Implementation Method 3
the washing tub and the pulsator being rotated by a motor in a state in which the laundry and the washing water are injected into the washing tub
Data Source
AI summary
A washing machine including a washing tub capable of improving a washing effect and dehydration efficiency of the laundry is provided. The washing machine includes: a body; a washing tub configured to be rotatably provided in the body, accommodate a laundry therein, and have a cylindrical shape; a plurality of recessed portions configured to be formed in an inner circumferential surface of the washing tub and be arranged in the plural in a circumferential direction of the washing tub to form a pattern; and first dehydrating holes configured to be formed in the respective recessed portions, wherein the respective recessed portions are formed in a length direction of the washing tub.