Cavitation Chamber Orifice Pressure Wave Reflection
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Solution Overview
Problem
Existing cavitation technologies fail to maximize the utilization of fluid energy for cavitation bubble formation and collapse, leading to inefficient chemical reactions and potential damage to surrounding surfaces due to uncontrolled implosion of cavitation bubble clouds.
Innovation Solution
A liquid treatment apparatus with a cavitation generating chamber that includes an orifice with a cross dimension significantly less than the supply chamber, and a chamber outlet with a cross dimension greater than the orifice, reflecting pressure waves to retain energy and enhance the intensity of cloud cavitation bubble collapse within the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cavitation bubbles are generated in a liquid medium, then chemical reactions are enhanced and microorganisms are killed, but uncontrolled implosion of cavitation bubble clouds causes damage to surrounding surfaces
Solution Approach 1:
The patent converts the harmful energy of uncontrolled cavitation bubble cloud implosion into beneficial repeated pressure waves by using the collapse of bubbles to generate pressure waves that are reflected back to cause repeated collapses. This transforms the destructive force into a controlled mechanism for enhancing chemical reactions and sterilization while reducing damage to surrounding surfaces.
Solution Approach 2:
The patent implements feedback by using the pressure waves generated from bubble collapse to trigger subsequent bubble collapses in a repeated cycle. The pressure waves from each collapse feed back into the system to create conditions for the next collapse, establishing a self-sustaining process that controls cavitation energy release.
2Stress or pressure
If pressure waves are generated from bubble collapse, then cavitation cloud collapse is initiated, but pressure wave amplitude decreases rapidly with distance from the bubble center
Solution Approach 1:
The patent merges multiple pressure waves from different bubble collapses into a single amplified pressure wave through constructive interference. By synchronizing the collapse of multiple bubbles, the individual pressure waves combine to create a much larger amplitude pressure wave that maintains energy over greater distances.
Solution Approach 2:
The patent uses periodic action by creating repeated pressure waves through sequential bubble collapses. The periodic nature of these collapses allows the pressure waves to build up amplitude through repeated cycles, overcoming the rapid decay that would occur from a single collapse event.
3Stress or pressure
If multiple bubbles collapse in random manner, then pressure waves are generated, but the amplitudes vary randomly and cavitation cloud collapse is not initiated
Solution Approach 1:
The patent uses feedback mechanisms where the pressure waves from bubble collapses are reflected back to trigger subsequent collapses in a synchronized manner. This feedback loop transforms random collapses into a coordinated sequence where pressure wave amplitudes become consistent and constructive interference occurs.
Solution Approach 2:
The patent applies mechanical vibration by using oscillating pressure waves to synchronize bubble collapses. The vibrational energy from reflected pressure waves creates a coordinated collapse pattern, transforming the randomness of individual bubble collapses into a synchronized process that generates high-amplitude pressure waves.
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 apparatus increases the intensity and frequency of cavitation bubble collapse, enhancing chemical reaction efficiency and reducing damage to the device by retaining energy within the system, allowing for more effective treatment of liquids and potentially reducing chemical consumption and production costs.
Implementation Method 1
an orifice positioned downstream of the supply chamber, wherein the orifice has a cross dimension that is substantially less than a cross dimension of the supply chamber for providing a fluid constriction
Implementation Method 2
Cavitation is the formation and implosion or collapse of cavities, or bubbles, in a liquid that are the consequence of forces acting upon the liquid. Cavitation usually occurs when the local pressure within a liquid is reduced to less than the vapor pressure of the liquid.
Implementation Method 3
reflecting pressure waves to retain energy and enhance the intensity of cloud cavitation bubble collapse within the device
Implementation Method 4
the collapse which produces the effecting high temperatures and pressures. More intense bubble collapse results in higher temperatures and allows more energetic bonds to be broken.
Data Source
AI summary
A liquid treatment apparatus includes a supply chamber for receiving a fluid, a discharge chamber for discharging the fluid, and a cavitation generating chamber extending from the supply chamber to the discharge chamber. The cavitation generating chamber is operable to generate cavitation bubbles. A method of treating a liquid comprises directing a fluid from a supply chamber into a cavitation generating chamber by constricting the fluid through an orifice, wherein the orifice has a cross dimension that is substantially less than a cross dimension of the supply chamber, such that a fluid jet is formed. The method further includes allowing the fluid jet to expand downstream of the orifice such that the velocity of the fluid is reduced so that the jet axial velocity head at the chamber outlet is less than the difference between the static pressure within the discharge chamber and the vapor pressure of the fluid. The method also includes discharging the fluid into a discharge chamber via a chamber outlet.