Multi-Axis Rotatable Sprayer for Dishwasher Corner Coverage
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Solution Overview
Problem
Conventional dishwashers often struggle to provide effective spray coverage in the corners of the treating chamber, leading to inadequate cleaning due to the typical circular path of sprayers that fail to reach the rectangular or square corners efficiently.
Innovation Solution
A rotatable sprayer system with multiple conduit segments and a spray head mounted on two rotating arms, allowing the spray head to traverse a path with four corners, ensuring direct spraying in all corners of the treating chamber by rotating the first conduit segment about one axis, the second conduit segment about a radially spaced axis, and the spray head about another axis, creating a path that covers the entire chamber effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional circular sprayer path is used, then the sprayer structure is simple, but the spray coverage in the corners of the treating chamber is insufficient
Solution Approach 1:
The sprayer is divided into multiple independent rotatable sections (first conduit segment, second conduit segment, spray head) that can rotate about separate axes. This segmentation allows each section to contribute to the overall rectangular traversal path, enabling complete corner coverage while maintaining manageable structural complexity through modular design
Solution Approach 2:
The sprayer transitions from a single-axis circular rotation to a multi-axis rotational system. The first conduit segment rotates about a first axis, the second conduit segment rotates about a second axis, and the spray head rotates about a third axis, creating a three-dimensional rectangular traversal path that effectively covers all corners of the treating chamber
2Reliability
If a multi-axis rotatable sprayer system is implemented, then corner spray coverage is improved, but the device complexity increases
Solution Approach 1:
The sprayer employs dynamic multi-axis rotation where each section can rotate independently about its own axis. The first conduit segment rotates about a first axis, the second conduit segment rotates about a second axis, and the spray head rotates about a third axis, allowing the system to adapt its trajectory to achieve complete rectangular path coverage and ensure reliable cleaning effectiveness
Solution Approach 2:
The sprayer structure is organized in a nested hierarchy where the spray head is mounted on the second conduit segment, which is mounted on the first conduit segment. This nested arrangement allows compact packaging of the multi-axis rotational mechanism while maintaining the ability to traverse the entire treating chamber effectively
Data Source
AI summary
A dishwasher has a treating chamber with four corners and a rotatable sprayer located within the treating chamber, where the sprayer includes two conduit segments which rotate about two different axes and a spray head which rotates about yet another axis. The combined rotation of the conduit segments moves the spray head in a non-circular path around the treating chamber.