Dishwasher Air Jet Generator Using Pump-Integrated Bubble Formation
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Solution Overview
Problem
Existing dishwashers require separate devices to form air bubbles in washing water, which increases complexity and costs, and need additional pumps for air bubble generation, making the process inefficient.
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 air bubble generation through centrifugal force and pressure manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a separate device is used to inject air into washing water for forming air bubbles, then air bubble generation capability is improved, but device complexity increases
Solution Approach 1:
The patent merges the air injection function into the existing washing water circulation system by integrating an air injection hole in the pump housing and using the pump's impeller to simultaneously perform water circulation and air injection tasks, thereby eliminating the need for a separate air injection device
Solution Approach 2:
The pump is designed to perform multiple functions: it circulates washing water and simultaneously injects air into the washing water through the integrated air injection hole, making the pump a multi-functional component that reduces overall system complexity
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 combines the air bubble generation function with the existing pump by providing an air injection hole in the pump housing, allowing the single pump to both supply washing water and generate air bubbles, thereby eliminating the need for a separate air jet generator pump
3Object-generated harmful factors
If air is crushed to form minute air bubbles, then washing effectiveness is improved, but energy consumption increases
Solution Approach 1:
The patent uses hydraulic principles by utilizing the pump's impeller rotation to create pressure differential that draws air through the air injection hole and crushes it into minute bubbles, leveraging the existing hydraulic energy of the water circulation system rather than requiring additional energy input for air crushing
Solution Approach 2:
The system uses its own operational energy (the pump's rotation for water circulation) to simultaneously perform air injection and crushing functions, making the air bubble generation process self-powered without requiring additional energy input
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 allows for continuous air bubble generation without additional equipment, enhancing washing power and efficiency while minimizing noise and space usage, and maximizing air bubble production at low pressures.
Implementation Method 1
a decompression portion (120) for decreasing 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
AI summary
A dishwasher includes: a spray module which sprays washing water toward dishes; a sump which supplies washing water to the spray module; a pump which pumps washing water stored in the sump to the spray module; and an air jet generator which receives a part of washing water pumped from the pump to form an air bubble in washing water and discharges the air bubble to the sump, wherein the air jet generator comprises: a decompression portion which decreases a pressure of washing water; 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 configured to crush the air contained in washing water that passed through the pressing portion.