Double-Valve Pressure Wave Control for Projectile Impact Tuning
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Solution Overview
Problem
Existing apparatuses for generating mechanical pressure waves using pneumatic means for medical treatment lack flexibility in controlling the back and forth movement of projectiles, leading to limitations in impact speed and efficiency.
Innovation Solution
The apparatus incorporates a double valve system that allows for variable control of the second activation time, enabling independent adjustment of the projectile's impact speed and return movement without altering the pneumatic pressure, by using a combination of two valves or a combination valve with multiple switching states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single switching valve is used for pneumatic acceleration of the projectile, then the apparatus structure is simple, but the control flexibility of impact speed and return movement is limited
Solution Approach 1:
The single switching valve is divided into two independent switching valves: a first switching valve for controlling pneumatic acceleration toward the applicator, and a second switching valve for controlling return movement. This segmentation allows independent control of each phase, providing flexible adjustment of impact speed and return characteristics without requiring complex valve mechanisms.
Solution Approach 2:
The control means dynamically adjusts the opening times of the two switching valves independently. The first activation time and second activation time can be varied separately, enabling dynamic control of projectile acceleration duration and return movement duration. This dynamic adjustment capability allows optimization of impact speed and return characteristics for different treatment requirements.
2Speed
If the pneumatic pressure is increased to improve impact speed, then the accelerating force increases, but the compressor efficiency and energy consumption increase
Solution Approach 1:
Instead of increasing pneumatic pressure to improve impact speed, the system dynamically adjusts the opening time duration of the first switching valve. The control means varies the first activation time to control the duration of pneumatic acceleration, thereby controlling impact speed. This temporal control approach maintains optimal compressor efficiency while achieving variable impact speeds without excessive energy consumption.
Solution Approach 2:
The system changes the control parameter from pneumatic pressure to time duration. By adjusting the opening time of the switching valve rather than increasing pressure, the impact speed is controlled. This parameter change allows the compressor to operate at optimal efficiency points while still achieving the desired impact speed variations through temporal control of the pneumatic pulse.
3Speed
If the opening time of the switching valve is extended to improve return movement speed, then the projectile returns faster, but the overlap time with acceleration phase increases reducing control precision
Solution Approach 1:
The switching valve control is segmented into two independent control channels: first activation time for acceleration phase and second activation time for return phase. This segmentation allows the second activation time to be extended for faster return movement without affecting the first activation time, thereby maintaining precise control of impact speed. The independent control of each phase eliminates the overlap time conflict.
Solution Approach 2:
The control means independently dynamically adjusts each activation time. The second activation time can be extended to improve return movement speed without dynamically affecting the first activation time. This independent dynamic control allows optimization of each phase separately, maintaining impact speed control precision while achieving faster return movements.
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 approach provides a high degree of control over impact speed and efficiency, allowing for rapid and variable adjustment of impact physics, independent of pressure changes, and enables efficient operation of the pneumatic compressor at a fixed frequency.
Implementation Method 1
A pneumatic overpressure is coupled-in by application of a pressure to a volume on one side of the projectile movable along a movement path
Implementation Method 2
the return movement takes place with the aid of a counter-pressure chamber, i.e., a storage volume, into which the projectile moved towards the applicator to a certain extent displaces the air located in front of it, whereby it virtually pumps up this storage volume
Data Source
AI summary
The invention relates to an apparatus for treatment with pressure waves, comprising: a projectile guided along a movement path, an applicator (6) at one end of the movement path, pneumatic means for application of pressure to the projectile (8) for the purpose of movement along the movement path, wherein the projectile (8) is adapted for striking onto the applicator (6) for generating the pressure waves, which pneumatic means comprises a double valve means (1, 2) for application of pressure to the projectile (8) towards the applicator (6) during a first activation time and in the) reverse direction during a second activation time, and a control means (54) adapted to vary the second activation time.