Dishwasher Nozzle with Spiral Guide for Expanded Washing Coverage
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Solution Overview
Problem
Conventional dishwasher nozzles inject water in a straight line, limiting the washing region and failing to effectively clean the entire load of tableware.
Innovation Solution
The dishwasher incorporates a nozzle design with a spiral guide portion and multiple leg portions spaced apart to increase the number of injection ports and directions, allowing water to be injected in various angles, thereby widening the washing region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If water is injected through a single injection port in a substantially straight line, then the nozzle structure is simple, but the washing region is limited
Solution Approach 1:
The nozzle is divided into multiple functional segments: a guide portion with spiral flow path and multiple leg portions (first, second, and third leg portions) with injection ports at different positions and angles. This segmentation allows water to be injected in multiple directions simultaneously, expanding the washing region while maintaining a relatively integrated nozzle structure.
Solution Approach 2:
The injection system transitions from one-dimensional straight-line injection to three-dimensional multi-directional injection. The guide portion directs water flow into the first leg portion (first direction), second leg portion (second direction), and third leg portion (third direction), creating comprehensive spatial coverage of the washing region.
2Area of stationary object
If a single injection port is used, then the nozzle structure is simple, but water distribution coverage is insufficient
Solution Approach 1:
The nozzle is divided into multiple functional segments: a guide portion with spiral flow path and multiple leg portions (first, second, and third leg portions) with injection ports at different positions and angles. This segmentation allows water to be injected in multiple directions simultaneously, expanding the washing region while maintaining a relatively integrated nozzle structure.
Solution Approach 2:
Different leg portions are configured with distinct injection characteristics: the first leg portion injects in a first direction, the second leg portion in a second direction, and the third leg portion in a third direction. Each segment is optimized for its specific injection angle and position, creating comprehensive spatial coverage with locally optimized injection quality.
3Productivity
If water is injected in a limited range, then the injection system is simple, but the tableware cleaning effectiveness is reduced
Solution Approach 1:
The nozzle is divided into multiple functional segments: a guide portion with spiral flow path and multiple leg portions (first, second, and third leg portions) with injection ports at different positions and angles. This segmentation allows water to be injected in multiple directions simultaneously, expanding the washing region while maintaining a relatively integrated nozzle structure.
Solution Approach 2:
The injection system transitions from one-dimensional straight-line injection to three-dimensional multi-directional injection. The guide portion directs water flow into the first leg portion (first direction), second leg portion (second direction), and third leg portion (third direction), creating comprehensive spatial coverage of the washing region.
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 effectively widens the washing region, ensuring that all tableware is thoroughly cleaned by distributing water more evenly and covering a larger area.
Implementation Method 1
a guide portion (120) to guide the washing water injected through the injection port (101)
Data Source
Figure 1
Figure 2~3
Figure 4~6
AI summary
A dishwasher including a nozzle capable of widening an injection region of washing water includes a main body, a washing tub provided inside the main body, and a nozzle configured to inject washing water into the inside of the washing tub, wherein the nozzle includes an injection port through which the washing water is injected, a guide portion configured to spirally guide the washing water injected through the injection port, and a leg portion configured to connect the guide portion and the injection port.