Dishwasher Multi-Axis Rotating Sprayer for Corner Coverage
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Solution Overview
Problem
Conventional dishwashers often struggle to provide thorough cleaning, especially in the corners of the tub, due to the limitations of fixed sprayer paths that do not effectively cover the entire treating chamber, leading to inadequate water distribution and reduced cleaning efficiency.
Innovation Solution
A rotatable sprayer system with a spray head mounted on two arms that rotate about distinct axes, allowing the spray head to traverse a path defining a squircle with rounded corners, ensuring comprehensive coverage of the tub's corners and corners of the treating chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed sprayer path is used, then the sprayer structure is simple, but the corner coverage is inadequate
Solution Approach 1:
The patent applies the dynamics principle by transforming the fixed sprayer into a multi-rotating system. The spray head is mounted on a second arm that rotates about a second axis, while the second arm itself is mounted on a first arm that rotates about a first axis. This dynamic configuration allows the spray head to traverse a squircle path that effectively covers all corners of the treating chamber, resolving the contradiction between structural simplicity and corner coverage area.
2Area of stationary object
If a rotatable sprayer with multiple arms is used, then the corner coverage is improved, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the sprayer mechanism into distinct functional segments: a first arm rotating about a first axis, a second arm rotating about a second axis, and a spray head rotating about a third axis. Each segment performs a specific rotational function, and their combined motion creates the squircle traversal path. This segmentation allows the complex coverage pattern to be achieved through modular, independent rotational components rather than a single complex mechanism.
3Productivity
If water distribution is increased to improve cleaning, then the cleaning efficiency improves, but the water consumption increases
Solution Approach 1:
The patent applies local quality by concentrating water spray delivery at the four corner regions of the treating chamber through the squircle traversal path. Instead of distributing water uniformly throughout the entire chamber, the spray head delivers water specifically to the corners where soil accumulation is most problematic. This localized water application improves cleaning efficiency in critical areas while reducing overall water consumption compared to uniform distribution systems.
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.