Drum washing machine
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Solution Overview
Problem
Drum washing machines require periodic professional cleaning due to dirt accumulation and water retention issues, leading to secondary pollution and inefficiencies.
Innovation Solution
A drum washing machine design featuring a front and rear washing drum configuration where the rear drum rotates with a motor, eliminating the need for an outer drum and preventing water accumulation on the outer walls, thus reducing maintenance needs and water usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an inner drum and outer drum configuration is used, then the washing machine can perform normal washing functions, but the interlayer between the drums becomes a harboring site for dirt and residual water that cannot be easily cleaned
Solution Approach 1:
The invention extracts and removes the outer drum from the traditional inner drum-outer drum configuration, retaining only the inner drum as a single washing drum. This eliminates the interlayer space between drums where dirt and water accumulate, making the structure easier to clean while preserving the washing function.
2Device complexity
If a single washing drum is used without an outer drum, then the structure is simplified and easier to clean, but the drum needs to be supported during rotation
Solution Approach 1:
The invention employs a dynamic support system where a bearing is mounted on the washing drum itself, allowing the drum to rotate freely while being properly supported. This dynamic arrangement simplifies the overall structure compared to fixed outer drum support systems while maintaining drum stability during operation.
3Speed
If the bearing is mounted on the washing drum, then the drum can rotate smoothly, but the bearing needs to be sealed to prevent water leakage
Solution Approach 1:
The invention introduces a sealing ring as an intermediary component between the bearing and the washing drum interior. This sealing ring prevents water from entering the bearing while allowing the bearing to remain mounted on the rotating drum, thus maintaining both rotation smoothness and water sealing reliability.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A drum washing machine includes a washing machine housing (1). A washing drum is disposed in the washing machine housing (1) and includes a front washing drum (21) and a rear washing drum (22). The front washing drum (21) is sealedly connected to the rear washing drum (22). The rear washing drum (22) is operative to rotate relative to the front washing drum (21). The rear washing drum (22) is further operative to rotate along with a motor (4), and the front washing drum (21) is stationary when the rear washing drum (22) is rotating along with the motor (4).