Dishwasher Water Supply Pipe With Integrated Air Bubble Injection
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Solution Overview
Problem
Conventional dishwashers require additional components and separate operation for generating air bubbles, which complicates the washing process and increases resource usage.
Innovation Solution
Incorporating an air jet generator in the supply flow path of the dishwasher to form air bubbles by suctioning and crushing outside air into the wash water flowing through the supply pipe, eliminating the need for additional pumps and enhancing washing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional electrolysis unit is provided to generate air bubbles, then washing performance is enhanced, but device complexity increases and additional resources are required
Solution Approach 1:
The air jet generator is integrated into the existing supply flow path between the sump and spray nozzle, merging the air bubble generation function with the water supply system. This eliminates the need for a separate electrolysis unit and its dedicated pump, reducing device complexity while maintaining washing performance enhancement through air bubble injection.
Solution Approach 2:
The air jet generator utilizes the existing water flow from the pump to create air bubbles, making the water supply system serve dual purposes: transporting wash water and enabling air injection. This multi-functionality approach allows one component to perform multiple roles, reducing the overall number of components needed.
2Reliability
If an electrolysis device operates separately from the pump, then air bubbles can be generated, but operation complexity increases
Solution Approach 1:
The air jet generator is positioned in the supply flow path and activated simultaneously with the pump operation. The water flow from the pump directly drives the air injection mechanism, eliminating separate operation requirements. When the pump operates, air bubbles are automatically generated and injected into the wash water without additional operational steps.
3Reliability
If the supply pipe cross section is deformed to match the air jet generator, then air bubble generation is improved, but flow uniformity deteriorates
Solution Approach 1:
The supply pipe is divided into three functional sections: a first section with constant cross-section for uniform water flow, a deformation section that transitions the cross-section to match the air jet generator, and a second section with constant cross-section for stable flow after air injection. This segmentation allows each section to perform its specific function without compromising overall flow uniformity.
Solution Approach 2:
The deformation section is designed in advance to smoothly transition the pipe cross-section before the air jet generator. This preliminary geometric adjustment ensures that water flow enters the air jet generator with optimal characteristics, enabling effective air bubble generation while maintaining flow stability through the transition zone.
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 dishwasher effectively sprays wash water with air bubbles, improving washing performance without additional resource requirements, and ensures stable air bubble generation through uniform flow management.
Implementation Method 1
outside air is suctioned using a negative pressure into wash water flowing through the supply pipe by the pump
Implementation Method 2
an impeller applying a centrifugal force to flowing wash water
Implementation Method 3
an impeller applying a centrifugal force to flowing wash water, a decompression portion for reducing pressure of the flowing wash water
Implementation Method 4
a pressing portion for increasing pressure so as to crush the air introduced from the air suction portion
Data Source
AI summary
The present invention relates to a dishwasher. The dishwasher according to the present invention includes a tub for providing a washing space, a rack for accommodating dishes in the tub, a spray nozzle for spraying wash water toward the dishes accommodated in the rack, a sump for supplying the wash water to the spray nozzle, a pump for pumping the wash water stored in the sump to the spray nozzle, a supply pipe connecting the sump and the spray nozzle, and an air jet generator disposed in a supply flow path formed by the supply pipe to suck outside air to the wash water flowing along the supply pipe and crush the air to thereby form air bubbles.