Sealed Drum Washer Structure for Hygienic High-Capacity Washing
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Solution Overview
Problem
Existing drum washing machines face issues with dirt accumulation between the inner and outer drums, reduced washing efficiency due to bacterial growth, and low utilization of inner space, as the inner drum is sleeved within the outer drum, limiting capacity expansion.
Innovation Solution
A drum washing machine design featuring a holeless inner drum that rotates to wash clothes, integrated with a water feeding device and centrifugal valve for leakproof water management, allowing the inner drum to hold water and expand capacity without an outer drum, ensuring efficient washing and dewatering functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner drum is sleeved within the outer drum, then the structure is compact and stable, but dirt accumulates between the drums and bacteria multiply reducing washing efficiency
Solution Approach 1:
The invention removes the outer drum from the washing machine structure, extracting the problematic space between inner and outer drums where dirt accumulates. The inner drum becomes a sealed container that directly contacts water and clothes, eliminating the hidden corner where bacteria multiply, while maintaining structural stability through direct mounting on the machine body.
Solution Approach 2:
The invention segments the water containment function from the structural support function. The inner drum serves as both the washing chamber and water container, while the machine body provides structural support. This segmentation eliminates the need for an outer drum that created hygiene problems.
2Productivity
If the inner drum is sleeved within the outer drum, then the structure is stable, but the washing capacity is limited by the inner drum size
Solution Approach 1:
The inner drum is designed to serve multiple functions: it acts as both the washing drum and the water containment vessel. This multi-functionality eliminates the need for a separate outer drum, maximizing the utilization of the available internal space and allowing for larger washing capacity within the same machine footprint.
3Reliability
If the inner drum is made sealed to hold water, then water containment is improved, but water feeding and draining becomes complex due to rotation
Solution Approach 1:
The invention introduces a rotating seal mechanism at the drum end that serves as an intermediary between the rotating inner drum and the stationary water feeding/draining pipes. This seal allows water to be supplied to and drained from the rotating drum without compromising the sealed environment, simplifying the overall water management system compared to traditional outer drum designs.
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 enhances washing efficiency by preventing dirt accumulation, improving cleanliness, and increasing the washing machine's capacity without altering its size, while maintaining leakproofness and effective water handling during rotation.
Implementation Method 1
water in the clothes in the inner drum is discharged to the outer drum through the draining holes when the inner drum rotates at a high speed
Implementation Method 2
a vibration absorption device, the inner side of the outer door is connected with a shaft body through the vibration absorption device
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A drum washing machine comprises a machine body (7), a door body, an inner drum (4) and a water feeding device. The inner drum (4) is rotatably arranged in the machine body (7), and holds water in a washing process. A front part of the inner drum (4) is provided with an input port for taking and putting clothes. The door body is mounted at a front part of the machine body (7) corresponding to the input port of the inner drum (4) for opening or closing the input port, and. An end with the input port of the inner drum (4) is hermetically connected with the door body in a relatively rotating manner. The water feeding device includes a first water feeding pipe (24), a water collection sump and a second water feeding pipe; the first water feeding pipe is connected with an external water source, the water collection sump (23) is arranged on the door body and opposite to the first water feeding pipe (24), and the second water feeding pipe (21) is arranged in the door body and communicates the water collection sump (23) with the inside of the inner drum (4). Through the arrangement of the water collection sump (23) on the door body, the fed water of the first water feeding pipe (24) may be collected, thus realizing water feeding of the inner drum (4) and not affecting the normal opening and closing of the door body at the same time.