dishwasher
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Dishwashers face issues with space utilization, ease of assembly, and interference between the duct and spray unit with dishes due to misalignment and assembly tolerance, leading to reduced coupling force between the basket and duct.
Innovation Solution
A dishwasher design featuring a basket with wires forming a frame and a duct with fixing protrusions and a hook system that securely attaches to the basket, allowing for stable alignment and rotation to prevent interference with dishes, improve assembly ease, and enhance coupling force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the duct is mounted on the basket with assembly tolerance, then the assembly is easier to manufacture, but the basket and duct are easily shaken and misalignment occurs
Solution Approach 1:
The duct is designed to be rotatable relative to the basket through an opening, allowing dynamic adjustment during operation. This rotation capability enables the duct to adapt its position while maintaining a secure fixed connection, resolving the contradiction between easy assembly and stable coupling by allowing post-assembly positioning adjustment without requiring precise initial alignment.
2Volume of moving object
If the duct and spray unit are positioned to improve space utilization, then more dishes can be accommodated, but the duct may interfere with dishes when misaligned
Solution Approach 1:
The rotatable duct design allows the duct to dynamically adjust its angular position, enabling it to navigate around dishes and avoid interference while maintaining optimal space utilization. The duct can rotate to clear obstacles (dishes) in its path while still delivering water effectively, thus resolving the contradiction between maximizing space and preventing harmful interference.
3Manufacturing precision
If the duct is fixed rigidly to the basket, then alignment is more precise, but the assembly tolerance requirement increases and assembly becomes more difficult
Solution Approach 1:
The rotatable connection between the duct and basket provides a dynamic alignment solution. Instead of requiring precise fixed alignment during assembly, the duct can rotate to achieve proper positioning after assembly. This eliminates the need for tight assembly tolerances and complex alignment procedures, resolving the contradiction between alignment precision and assembly ease.
4Ease of repair
If the duct is made detachable from the basket, then ease of repair and maintenance is improved, but coupling force and stability may be reduced
Solution Approach 1:
The rotatable duct design provides a secure fixed connection through rotation and engagement with the basket opening, maintaining strong coupling force during operation. The detachable nature is preserved through the overall modular design, allowing the duct to be removed by reversing the rotation and engagement process. This resolves the contradiction between ease of repair and coupling strength by making the connection mechanically robust during use but reversible when needed.
Data Source
AI summary
A dishwasher may include a tub, a basket inside the tub, and to accommodate objects to wash therein, and the basket including a wire forming the basket, and a duct detachably coupled to the basket to guide washing water to be sprayed into the objects. The duct includes a first fixing protrusion to fix an upper portion of the wire. The duct includes a second fixing protrusion to fix a lower portion of the wire. The second fixing protrusion is spaced apart from the first fixing protrusion along an extension direction of the wire.