Water Jet Discharge Using Large Air Bubbles for Flow Variation
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Solution Overview
Problem
Existing water discharge devices face challenges in providing sufficient flow speed variation and forming a large water mass without using a large pump, especially when the distance from discharge to arrival is short, which affects the feeling of cleaning and water saving performance.
Innovation Solution
A water discharge device that includes a water supply path, a jetting port, a discharge channel, a water storage chamber with a water passing path section, and an air bubble supplying section that generates large air bubbles to alternately and repeatedly vary the water passing resistance, allowing the jet flow to pierce through the bubbles or pass through stored water, thereby varying the flow speed and forming a large water mass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a large pump is used to apply pressure higher than water supply pressure to achieve intermittent water discharge by water mass, then flow speed variation is improved, but device size and cost increase
Solution Approach 1:
The patent replaces the mechanical pump system with a pneumatic system using air bubbles. Air bubbles are introduced into the water flow to create intermittent high-speed jet portions and low-speed portions without requiring a large pump. The air bubbles naturally rise and coalesce to form the water mass, eliminating the need for complex mechanical pressure application equipment.
Solution Approach 2:
The patent utilizes pneumatic principles by introducing air bubbles into the water flow. The air bubbles expand and coalesce in the water stream, creating natural flow variation and water mass formation. This pneumatic approach achieves flow speed variation and water mass accumulation without requiring large mechanical pumps, thus reducing device size and complexity.
2Device complexity
If air bubbles are mixed in cleaning water to cause flow speed variation, then pump size is reduced, but flow speed variation magnitude is insufficient
Solution Approach 1:
The patent applies preliminary action by pre-forming air bubbles in a dedicated bubble generation chamber before they enter the water flow. The air bubbles are generated in advance and then introduced into the water stream, allowing them to coalesce and form significant water mass. This preliminary bubble formation enables sufficient flow speed variation while keeping the pump size small.
Solution Approach 2:
The patent uses air bubbles as an intermediary substance to achieve flow speed variation. Instead of directly using mechanical force or large pumps, air bubbles serve as a mediator that naturally creates flow variation through their expansion, coalescence, and interaction with the water flow. This intermediary approach achieves significant flow speed variation with minimal pump requirements.
3Productivity
If fine air bubbles are mixed in cleaning water to efficiently mix air, then air mixing efficiency is improved, but flow speed variation remains insufficient
Solution Approach 1:
The patent applies preliminary action by pre-forming air bubbles in a dedicated chamber before introducing them into the water flow. This preliminary bubble formation allows the air bubbles to coalesce and create significant flow variation when they enter the water stream. The bubbles are generated in advance in a controlled environment, then released to create the desired flow speed variation effect.
Solution Approach 2:
The patent applies local quality by creating different flow conditions in different regions. Air bubbles are concentrated in specific areas where they can coalesce and form water mass, while other regions maintain normal flow conditions. This localized bubble concentration enables significant flow speed variation in the critical areas where water mass formation occurs, while maintaining overall air mixing efficiency.
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 solution enables significant flow speed variation and the formation of a large water mass even at short distances, enhancing the cleaning experience while reducing water consumption without the need for a large pump, thus improving both the feeling of cleaning and water saving efficiency.
Implementation Method 1
an air bubble supplying section configured to generate an air bubble, which is formed by changing the air in a bubble form in the water storing section
Implementation Method 2
alternately and repeatedly generate a first water passing state in which the jet flow pierces through the large air bubble and a second water passing state in which the jet flow passes through the stored water and varies water passing resistance of the jet flow
Implementation Method 3
a water storage chamber provided between the jetting port and the discharge channel and including a water passing path section, which is a path through which the jet flow passes from the jetting port to the discharge channel, and a water storing section for forming stored water to be adjacent to the water passing path section
Implementation Method 4
a jetting port for jetting the water, which is supplied from the water supply path, to a downstream side as a jet flow
Data Source
AI summary
A water discharge device generates a large air bubble having a cross sectional area larger than a channel sectional area of a jetting port when the inside of a water storage chamber is viewed from the jetting port. The water discharge device intermittently forms the large air bubble to change a flow speed of a jet flow.