Washing Machine Drum Bead Layout for Gentle Dirt Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing washing machine drums with beads encircling the shell cause mechanical stress and damage to laundry, and require complex dirt removal systems with recesses in both the driver and drum casing, leading to increased production costs and inefficiencies.
Innovation Solution
A drum design where beads are located exclusively in the driver area, with a depression formed by the driver and drum shell, and an additional receiving section outside the driver area, optimizing dirt collection and removal while minimizing mechanical action on laundry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beads are arranged to completely encircle the drum shell, then dirt removal capability is improved, but mechanical stress on laundry increases causing damage
Solution Approach 1:
The bead arrangement is segmented into two distinct zones: a first area where beads contact the drum shell for dirt removal, and a second area where beads are absent to prevent laundry damage. This segmentation allows the drum to perform both dirt removal and gentle washing functions simultaneously.
Solution Approach 2:
Different regions of the drum shell have different bead configurations: the first area (opposite the carrier) has beads for effective dirt removal, while the second area (adjacent to the carrier) has no beads to minimize mechanical stress on laundry. This local differentiation optimizes both cleaning efficacy and laundry protection.
2Reliability
If recesses are provided in both the driver and drum casing for dirt removal, then dirt removal efficiency is improved, but production complexity and work steps increase
Solution Approach 1:
The dirt removal function is extracted from the driver component and relocated to the drum shell structure. Only the drum shell requires recesses and bead arrangements, while the driver maintains its simple, standard design. This extraction eliminates the need to modify the driver, significantly reducing production complexity.
3Reliability
If beads are located in the depression area formed by driver and drum shell, then dirt removal is facilitated by water access, but laundry contact with beads becomes more difficult
Solution Approach 1:
The drum shell is segmented into a first area with beads in depressions for dirt removal and a second area without beads for gentle laundry handling. The carrier is positioned to occupy the second area, physically separating laundry from beads while maintaining water flow through the bead area for effective dirt removal.
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
Reduces production complexity, minimizes mechanical stress on laundry, and enhances dirt removal efficiency by concentrating beads in the driver area and utilizing gravitational and centrifugal forces for effective dirt collection and drainage.
Implementation Method 1
The edge area between driver and drum shell represents the bottom of the sink. The dirt collects here due to gravitational and centrifugal forces
Implementation Method 2
The edge area between driver and drum shell represents the bottom of the sink. The dirt collects here due to gravitational and centrifugal forces
Data Source
Figure 1
Figure 2~3
AI summary
The drum has a driver (2) that is arranged in the drum interior of a drum casing (1). The seams (4) are provided in the drum casing. The recess portions (6) are formed in the seams and are covered with the driver, for passage of washing/rinsing fluid. The seams are exclusively located in the region of driver. A receiving section (5) of the seams is extended outside the region covered by the driver, at the edge portion (K) of driver and drum casing.