Dishwasher Side-Surface Discharge for Air-Bubble Tub Cleaning
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Solution Overview
Problem
Dishwashers face challenges in effectively cleaning the bottom surface of the tub while using washing water with air bubbles, as the bubbles tend to fall to the bottom, contaminating it and requiring additional mechanisms to clean both the dishes and the tub surface effectively.
Innovation Solution
A dishwasher design incorporating an air jet generator that forms air bubbles in the washing water using a conventional pump, without a separate air injection pump, and discharges the bubble-containing water through a side surface hole to clean the tub bottom, utilizing a side surface structure to direct the water and bubbles for efficient cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If washing water with air bubbles is sprayed to dishes, then cleaning power is improved, but the bottom surface of the tub becomes contaminated by fallen air bubbles
Solution Approach 1:
The patent converts the harmful effect of fallen air bubbles (contamination) into a beneficial effect by directing the bubble-containing water to the tub bottom for cleaning. The air bubbles that would normally contaminate the tub surface are instead used to clean the tub bottom through chemical decomposition, transforming a harmful factor into a useful cleaning agent.
Solution Approach 2:
The patent changes the discharge direction from the conventional bottom discharge to side surface discharge. By discharging washing water containing air bubbles through a side surface hole formed on the side surface of the tub, the water flows down along the side surface and cleans the tub bottom, preventing bubble accumulation and contamination at the discharge location.
2Productivity
If a separate air injection pump is used to generate air bubbles, then bubble formation is improved, but device complexity increases
Solution Approach 1:
The patent makes the conventional pump perform multiple functions: it supplies washing water to both the spray module for dish cleaning and the air jet generator for bubble formation. This eliminates the need for a separate air injection pump, reducing device complexity while maintaining bubble generation capability through the air jet generator that utilizes the pump's output.
3Productivity
If washing water is discharged to the bottom surface of the tub, then the bottom surface can be cleaned, but air bubbles accumulate and contaminate the discharge area
Solution Approach 1:
The patent changes the discharge location from the bottom surface to the side surface of the tub. The side surface hole is positioned at a height of equal to or less than half the full height of the tub, allowing washing water to flow down along the side surface and clean the tub bottom without bubbles accumulating at the discharge point, thus preventing contamination.
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
The solution allows for simultaneous cleaning of dishes and the tub bottom with air bubbles, maximizing cleaning power and minimizing contamination, while using existing dishwasher components to generate and direct the air bubbles effectively.
Implementation Method 1
an air jet generator which receives a part of the washing water discharged from the pump to form an air bubble in the washing water
Implementation Method 2
The washing water containing the air bubble generates free radicals having excellent sterilizing power and chemical decomposing ability while the air bubble is dissipated
Implementation Method 3
The washing water containing the air bubble generates free radicals having excellent sterilizing power and chemical decomposing ability
Implementation Method 4
when the washing water falls to the bottom surface of the tub, the pressure of the falling washing water is added. Thus, the bottom surface of the tub can be effectively cleaned
Data Source
AI summary
The dishwasher of the present invention includes: a tub in which a dish washing space is formed; a sump which contains washing water supplied into the tub; a spray module which sprays washing water toward dishes; a pump which supplies the washing water stored in the sump to the spray module; an air jet generator which receives a part of the washing water discharged from the pump to form an air bubble in the washing water; and a discharge module which discharges the washing water containing the air bubble discharged from the air jet generator to a side surface of the tub.