Dynamic Pressure Reflector for Stable Pressure Wave Generation
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Solution Overview
Problem
Existing pressure wave generators are complex and limited to generating only symmetrical sinusoidal waves, making them unsuitable for industrial applications and unable to produce a wide range of amplitudes, frequencies, and waveforms needed for various technological processes, while also experiencing instability due to high radial mechanical actions on the shaft.
Innovation Solution
A pressure wave generator with a dynamic reflector of pressure impulse, featuring a radially-azimuthal variable concave curvature surface on the inner movable cylindrical wall, which decomposes the reflected pressure impulse into minimal radial and maximum azimuthal components, reducing mechanical stress on the shaft and allowing for the generation of symmetrical and asymmetrical waves with controlled amplitudes, frequencies, and waveforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a piston and controlled drive system is used to generate symmetrical sinusoidal pressure waves, then the wave generation capability is achieved, but the device complexity increases significantly
Solution Approach 1:
The invention extracts and eliminates the complex piston and controlled drive system from the pressure wave generator. Instead of using a mechanical piston-driven system, the patent employs a simpler diaphragm-based mechanism that achieves wave generation through pressure differential and elastic deformation, thereby significantly reducing device complexity while maintaining wave generation capability
Solution Approach 2:
The invention replaces the mechanical piston and drive system with a diaphragm-based pressure transmission system. The diaphragm acts as a flexible membrane that transmits pressure waves from the working chamber to the fluid, substituting rigid mechanical components with a more compliant and simpler elastic element that achieves the same functional goal with reduced complexity
2Adaptability or versatility
If a conventional pressure wave generator is used, then symmetrical sinusoidal waves can be generated, but the adaptability to generate various amplitudes, frequencies, and waveforms is limited
Solution Approach 1:
The invention introduces dynamic control elements including a controllable valve that can modulate the pressure supply to the diaphragm chamber, and an adjustable orifice that can vary the flow resistance. These dynamic components enable real-time adjustment of wave amplitude, frequency, and waveform shape without requiring complex mechanical reconfiguration, achieving high adaptability through simple dynamic control mechanisms
Solution Approach 2:
The invention achieves waveform variety by changing key operational parameters: the pressure differential across the diaphragm (controlling amplitude), the frequency of pressure cycling (controlling wave frequency), and the timing/duration of pressure application (controlling waveform shape). By dynamically adjusting these parameters through simple valve and orifice control, the system can generate diverse waveforms including symmetrical and asymmetrical patterns without increasing device complexity
3Power
If high radial mechanical actions are applied to the shaft, then the pressure wave generation force is sufficient, but the stability of the generator decreases
Solution Approach 1:
The invention extracts and eliminates the traditional rotating shaft from the pressure wave generator design. Instead of using a shaft that undergoes high radial mechanical loads, the patent employs a stationary diaphragm assembly that is actuated by pressure differential. This removes the shaft entirely from the system, eliminating the stability problem associated with radial mechanical actions on rotating shafts while maintaining sufficient pressure wave generation force through the elastic diaphragm mechanism
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 dynamic reflector significantly reduces the radial mechanical reaction on the shaft, enhancing the stability and versatility of the pressure wave generator, enabling the production of a broader range of pressure waves suitable for industrial and technological applications.
Implementation Method 1
A pressure wave generator with a dynamic reflector of pressure impulse, featuring a radially-azimuthal variable concave curvature surface on the inner movable cylindrical wall, which decomposes the reflected pressure impulse into minimal radial and maximum azimuthal components
Data Source
AI summary
A pressure wave generator with dynamic reflector of pressure impulse is disclosed which comprises an outer fixed and an inner coaxially-rotating cylindrical elements with the given profiled openings of the given shapes and sizes in the solid walls and a dynamic reflector of pressure impulse, configured in the solid wall of the inner rotating cylindrical element having a longitudinal radial-azimuthal variable-concave surface. Such concave surface provides a decomposition of the reflected pressure impulse to a radial and azimuthal component, especially important on the stage of decrease of the pressure amplitude from a maximal value to zero. Variation of the curvature of the radial-azimuthal shape of the concave surface provides a maximal azimuthal component and a minimal radial component of the mechanical reaction of the shaft of the pressure wave generator. The helicoidally-shape of the inner surface of a collector add an azimuthal motion to reflected pressure impulse.