Sealed Inner Drum Layout for Higher-Capacity Washing Machines
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Solution Overview
Problem
Existing drum washing machines face issues with dirt accumulation between the inner and outer drums, low utilization of inner space, and inefficiencies in washing and cleaning due to the sleeved design, which limits capacity and cleanliness.
Innovation Solution
A drum washing machine design featuring a holeless inner drum that rotates to wash clothes, with a water feeding device and centrifugal valve for leakproof water management, allowing for increased capacity without an outer drum and improved cleaning by hermetically connecting the inner drum to the door body, ensuring effective water holding and drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner drum and outer drum are mutually sleeved, then the washing machine can hold water and rotate to wash clothes, but dirt accumulates between the drums and cleaning becomes difficult
Solution Approach 1:
The patent removes the outer drum from the structure, extracting the problematic sleeved design that caused dirt accumulation. The inner drum becomes a sealed container that is hermetically connected to the door body, eliminating the gap between inner and outer drums where dirt would accumulate. This allows the washing machine to maintain water holding capability while preventing dirt buildup in the removed outer drum space.
2Reliability
If the inner drum and outer drum are mutually sleeved, then the structure provides water containment, but the inner space utilization is low and washing capacity cannot be expanded
Solution Approach 1:
By removing the outer drum entirely, the patent eliminates the space waste created by the sleeved structure. The inner drum's full volume becomes可利用 for washing, and the hermetic connection to the door body provides water containment without requiring an outer drum. This extraction of the outer drum component directly increases inner space utilization while maintaining water containment through the sealed connection.
3Volume of moving object
If the inner drum is a sealed container hermetically connected to the door body, then washing capacity is expanded and dirt accumulation is prevented, but the feeding and draining structure becomes complex
Solution Approach 1:
The door body is designed to serve multiple functions: it provides hermetic sealing to the inner drum, contains the water feeding device, houses the draining structure, and supports the shaft body for rotation. By making the door body a multi-functional component that integrates sealing, feeding, and draining functions, the patent avoids adding separate complex structures while achieving expanded washing capacity and preventing dirt accumulation.
4Reliability
If the inner drum rotates hermetically connected to the door body, then leakproofness is improved, but the feeding and draining mechanisms become more difficult to design
Solution Approach 1:
The door body integrates multiple functions including hermetic sealing, water feeding, and draining operations. The feeding device and draining structure are both contained within the door body, which rotates with the inner drum. This multi-functional integration allows the system to maintain leakproofness during rotation while avoiding the need for separate complex feeding and draining mechanisms.
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 capacity, prevents dirt accumulation, and maintains leakproofness, ensuring efficient washing and drainage while maintaining the inner drum's rotation functionality, thus improving the overall washing efficiency and cleanliness.
Implementation Method 1
One end of the vibration absorption spring is connected to the outer door, and the other end is connected to the shaft body
Implementation Method 2
a centrifugal valve is arranged on the side wall of the inner drum... when the inner drum rotates at a high speed, water in the clothes in the inner drum is discharged to the outer drum through the draining holes
Data Source
AI summary
A drum washing machine comprises a machine body, a door body, an inner drum and a water feeding device. The inner drum is rotatably arranged in the machine body, and holds water in a washing. A front part of the inner drum is provided with an input port for taking and putting clothes. The door body is mounted at a front part of the machine body corresponding to the input port of the inner drum for opening or closing the input port. An end with the input port of the inner drum is hermetically connected with the door body in a relatively rotating manner. The water feeding device includes a first water feeding pipe connected with an external water source, a water collection sump corresponding to the first water feeding pipe arranged on the door body, and a second water feeding pipe arranged in the door body.