dishwasher
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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
A dishwasher design that incorporates an air jet generator in the supply flow path 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
1Productivity
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 bubble generation function is merged with the existing water supply system by installing the air jet generator directly in the water supply passage. This integration allows the pump to simultaneously perform both water pumping and air bubble generation functions, eliminating the need for separate electrolysis units and reducing overall device complexity while maintaining enhanced washing performance
Solution Approach 2:
The invention uses hydraulic principles by utilizing the pump's water flow to create negative pressure that draws air into the water supply passage. The air jet generator employs fluid dynamics to mix air and water, creating air bubbles through pressure differential rather than requiring electrical electrolysis equipment, thus reducing device complexity
2Productivity
If an electrolysis device operates separately from the pump, then air bubbles can be generated, but the system requires additional components and separate operation
Solution Approach 1:
The air bubble generation function is merged with the water pumping operation by installing the air jet generator within the water supply passage. The pump's water flow automatically creates the negative pressure needed for air suction, allowing both water delivery and air bubble generation to occur simultaneously during normal pump operation without requiring separate control or additional components
Solution Approach 2:
The system uses its own water flow to generate air bubbles - the pump's output creates negative pressure that automatically draws air into the water supply passage through the air jet generator. This self-service mechanism eliminates the need for external air supply systems or separate operation controls, simplifying the overall system operation
3Volume of moving object
If the supply pipe cross-section is deformed, then space utilization is improved, but water flow uniformity deteriorates
Solution Approach 1:
The air jet generator is strategically positioned at a specific location within the deformed supply pipe where it can effectively mix air and water despite the non-uniform flow conditions. The local intervention of the air jet generator compensates for the overall flow non-uniformity caused by pipe deformation, ensuring adequate air bubble generation at the critical mixing point while maintaining compact space utilization
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 resources, and ensures stable air bubble generation through uniform water flow despite deformation in the supply pipe cross-section.
Implementation Method 1
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
Implementation Method 2
crush the air to thereby form air bubbles
Data Source
Figure 1
Figure 2
Figure 3~4
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.