Shower Head with Dual Bubble Generators for Fine Bubble Production
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Solution Overview
Problem
Existing shower heads struggle to generate a large amount of fine bubbles, as they either limit bubble generation to a single position or require high water flow rates or air adjustment, leading to large bubble diameters.
Innovation Solution
A shower head design with minute bubble generators positioned on both the upstream and downstream sides of the water passage, utilizing cavitation to generate fine bubbles, which are further atomized by a swirling flow mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a bubble generator is disposed at only one position in the water passage, then the device complexity is reduced, but the quantity of bubbles generated is limited
Solution Approach 1:
The water passage is divided into multiple sections with bubble generators disposed at different positions (upstream side and downstream side). This segmentation allows bubbles to be generated at multiple locations along the water flow path, significantly increasing the total amount of bubbles produced while maintaining a relatively simple overall device structure.
2Manufacturing precision
If the flow speed of water is greatly increased to generate fine bubbles, then the bubble diameter is reduced, but the energy consumption increases
Solution Approach 1:
Air is introduced into the water passage in advance before the water reaches the bubble generators. The pre-introduced air is then utilized by the bubble generators to create fine bubbles through cavitation and swirling flow mechanisms, eliminating the need to increase water flow speed and thereby reducing energy consumption while achieving the desired fine bubble diameter.
3Quantity of substance
If the ratio of air to water flow rate is increased to generate more bubbles, then the bubble quantity increases, but the bubble diameter becomes larger
Solution Approach 1:
The bubble generators are designed with specific local structures (constrictions, expansion sections, and swirling flow generating sections) that create localized high-velocity regions and pressure differences. These local quality features enable the generation of fine bubbles even with increased air-to-water ratio, as the localized hydrodynamic conditions control bubble size rather than the overall air-to-water ratio.
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 design significantly increases the number of fine bubbles in shower water, providing enhanced cleaning and temperature retention effects, with fine bubbles maintaining their presence over extended periods, especially in bathtub water.
Implementation Method 1
minute bubble generators are disposed at positions on an upstream side and a downstream side in a water passage. The minute bubble generators generate fine bubbles through cavitation.
Implementation Method 2
the Venturi effect is utilized in the components that generate bubbles by self-priming air through a swirling flow of water
Data Source
AI summary
A shower head includes a handle and a head portion. The head portion includes shower holes. The handle includes an upstream bubble generator that generates minute bubbles in water. The head portion includes a downstream bubble generator that generates minute bubbles in water in the same manner as the upstream bubble generator. The upstream bubble generator includes a constriction and a tapered portion. The downstream bubble generator has a swirling flow mode. Since minute bubbles are generated on the upstream and downstream sides, the amount of minute bubbles mixed in water becomes larger. This allows for showering by effectively using the function of minute bubbles.