Dishwasher Spray Manifold Layout for Full Rack Coverage
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Solution Overview
Problem
Conventional dishwashers often leave areas of the dish racks and silverware basket under-sprayed, particularly the corners and middle sections, due to limited spray patterns that primarily follow vertical paths, resulting in incomplete cleaning.
Innovation Solution
A dishwasher design featuring a manifold with multiple apertures configured to emit liquid in different directions, including downwardly, upwardly, and arcing patterns, to ensure comprehensive coverage of dishes in both the upper and lower racks and the silverware basket, utilizing a combination of rotating and fixed sprayers to target specific zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vertical spray paths are used, then the spraying system is simple, but areas of the dish racks and silverware basket remain under-sprayed
Solution Approach 1:
The manifold is divided into multiple apertures with different orientations (upward, downward, arcing) to segment the spray coverage into distinct zones, ensuring comprehensive coverage of all rack areas including corners and middle sections that were previously under-sprayed
Solution Approach 2:
Different apertures are configured with specific spray directions tailored to local areas: upward sprays for upper rack, downward sprays for lower rack, and arcing sprays for corner and middle section coverage, providing locally optimized cleaning for each zone
2Reliability
If multiple apertures with different spray directions are added, then comprehensive coverage is achieved, but the manifold complexity increases
Solution Approach 1:
Multiple spray functions (upward, downward, arcing) are merged into a single manifold assembly with multiple apertures, eliminating the need for separate spray devices and reducing overall system complexity while achieving comprehensive coverage
Solution Approach 2:
The manifold serves multiple functions simultaneously by incorporating apertures oriented in different directions, allowing a single component to address various spray coverage needs (upper rack, lower rack, corners, middle sections) that would otherwise require multiple separate devices
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
This design provides more thorough and intense cleaning coverage, effectively reaching all areas of the dish racks and silverware basket, including corners and bulkier items, by directing sprays to specific zones within the treating chamber.
Implementation Method 1
a first aperture of the multiple apertures is configured to emit a spray of liquid directly onto a dish adjacent to the manifold in the lower dish rack and a second aperture of the multiple apertures is configured to emit an arcing spray of liquid over the dish adjacent to the manifold in the lower dish rack
Data Source
AI summary
A dishwasher for treating dishes includes a tub at least partially defining a treating chamber, a spraying system having a manifold with at least one sprayer for spraying wash liquid into the treating chamber, and a recirculation system for recirculating liquid sprayed in the treating chamber to the spraying system. The sprayer of the manifold has multiple apertures which are configured to emit liquid to different areas of the treating chamber.