Dishwasher Air Jet Generator for Fine Bubble Cleaning
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Solution Overview
Problem
Existing dishwashers require separate devices for injecting air and pumps to form air bubbles in washing water, which increases complexity and costs, and do not efficiently generate small air bubbles for effective cleaning.
Innovation Solution
A dishwasher design that incorporates an air jet generator with a decompression portion, air suction portion, pressing portion, and air tap to form air bubbles within the washing water using a conventional pump, eliminating the need for a separate air injection device and pump, and optimizing bubble size and generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate device for injecting air is used to form air bubbles in washing water, then air bubble generation capability is improved, but device complexity increases
Solution Approach 1:
The patent combines the air injection function with the existing washing water circulation system by integrating an air inlet into the pump housing or circulation pipe. This merging of functions eliminates the need for a separate air injection device, reducing device complexity while maintaining air bubble generation capability in the washing water.
Solution Approach 2:
The pump or circulation system is designed to serve dual purposes: transporting washing water and injecting air bubbles. By making the circulation system multi-functional, the patent eliminates dedicated air injection equipment while preserving the ability to generate air bubbles for enhanced cleaning performance.
2Productivity
If a separate pump is used to supply washing water to an air jet generator, then air bubble formation efficiency is improved, but device complexity and cost increase
Solution Approach 1:
The patent integrates the air jet generator directly into the existing pump outlet or circulation line. The main pump supplies washing water that passes through the air jet generator, which introduces air bubbles. This integration allows the system to use the existing pump for both water supply and air bubble generation, eliminating the need for a separate pump.
Solution Approach 2:
The existing pump is made multi-functional by designing it to supply both washing water and facilitate air injection. The pump serves the dual purpose of circulating washing water and providing the flow necessary for the air jet generator to create fine air bubbles, thereby eliminating the need for additional pumping equipment.
3Productivity
If air bubbles are made smaller to increase interfacial area, then cleaning effectiveness is improved, but difficulty in generating and maintaining small bubbles increases
Solution Approach 1:
The patent utilizes hydraulic principles by forcing washing water through a narrow passage or orifice in the air jet generator at high velocity. This creates a strong shear force that breaks up injected air into fine bubbles. The hydraulic design of the passage geometry and flow velocity control enables generation of small bubbles with large total interfacial area for enhanced cleaning effectiveness.
Solution Approach 2:
The patent controls bubble size by adjusting parameters such as water flow velocity, air injection pressure, and passage dimensions. By optimizing these parameters, the system generates small air bubbles that remain dispersed in the washing water throughout the washing cycle, maximizing the total interfacial area available for cleaning without requiring complex bubble generation equipment.
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 continuous generation of air bubbles without additional equipment, enhancing cleaning power and efficiency while minimizing noise and space usage, and maximizing bubble formation using a conventional dishwasher pump.
Implementation Method 1
a decompression portion (120) which decreases a pressure of the washing water that flows
Implementation Method 2
an air suction portion (140) which is opened to allow air to flow into the decompression portion
Implementation Method 3
a pressing portion (130) which increases pressure so as to crush the air introduced from the air suction portion
Implementation Method 4
an air tap (180) which has a plurality of holes formed therein so as to crush the air contained in washing water that passed through the pressing portion
Implementation Method 5
an impeller for applying centrifugal force to the washing water that flows to the decompression portion
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention relates to a dishwasher. The dishwasher of the present invention includes: a spray module which sprays washing water toward dishes; a sump which supplies washing water to the spray module; a pump which pumps the washing water stored in the sump to the spray module; and an air jet generator which receives a part of the washing water pumped from the pump to form an air bubble in the washing water and discharges the air bubble to the sump, wherein the air jet generator comprises: a decompression portion which decreases a pressure of the washing water that flows; an air suction portion which is opened to allow air to flow into the decompression portion; a pressing portion which increases pressure so as to crush the air introduced from the air suction portion; and an air tap which has a plurality of holes formed therein so as to crush the air contained in washing water that passed through the pressing portion.