Washing machine and outer drum thereof
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Solution Overview
Problem
The existing washing machines face issues where the outer drum collides with the housing during operation, leading to deformation and reduced washing capacity, as increasing the outer drum's diameter without changing the housing structure results in collision, and reducing the diameter to prevent collision restricts the washing capacity.
Innovation Solution
The outer drum is designed with non-circular side walls, reticular reinforcing ribs, a smooth arc inner bottom wall, positioning holes, screw studs, and a clamping groove to prevent collision with the housing, enhance structural strength, and improve assembly efficiency, while maintaining the housing structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the diameter of the outer drum is increased to increase washing capacity, then the washing capacity is improved, but the outer drum collides with the housing causing deformation
Solution Approach 1:
The outer drum employs asymmetric non-circular side walls with different curvature radii instead of a traditional circular cross-section. The first non-circular side wall has a first curvature radius while the second non-circular side wall has a second curvature radius, creating an asymmetric profile that prevents collision with the housing while maximizing the use of internal space to increase washing capacity.
2Object-affected harmful factors
If the diameter of the outer drum is reduced to prevent collision with the housing, then the collision problem is avoided, but the washing capacity is reduced
Solution Approach 1:
The invention transitions from a two-dimensional circular cross-section to a three-dimensional non-circular profile with varying curvature radii. By utilizing the asymmetric non-circular side walls with different curvature radii, the design maximizes the use of available internal space in multiple dimensions, thereby increasing washing capacity without causing collision with the housing.
3Strength
If reticular reinforcing ribs are added to improve structural strength, then the overall strength is improved, but manufacturing complexity increases
Solution Approach 1:
The outer drum incorporates reticular reinforcing ribs that segment the drum wall into a grid-like pattern. These ribs are distributed throughout the drum structure, dividing the wall into smaller panels that collectively enhance overall strength and rigidity while maintaining manufacturability through standardized rib patterns.
Data Source
AI summary
An outer drum of a washing machine is provided, and relates to the technical field of washing machines. Two opposite side walls of the outer drum of the washing machine are formed as non-circular surfaces to avoid collision with side plates of a housing. A washing machine having the above outer drum is further provided.