Monoplanar Iris Diaphragm for Low-Turbulence Fluid Flow Tuning
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Solution Overview
Problem
Current pipe fittings, such as valves and orifices, induce turbulence in fluid flow due to their sharp features, leading to undesirable pressure drops and harmonic distortions, which can be mitigated by an iris-type diaphragm that conforms better to pipe diameters and allows for adjustable positioning to optimize fluid flow profiles.
Innovation Solution
An iris-type diaphragm with a rear housing, front plate, and adjustable iris blades that move in a linear path to maintain a concentric flow opening, minimizing turbulence by conforming to the pipe shape and allowing for fine adjustments through a linear actuator, with visible indication of opening size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional valves or orifices with sharp features are used, then the device structure is simple, but turbulence is induced in fluid flow causing undesirable pressure drops and harmonic distortions
Solution Approach 1:
The diaphragm is segmented into multiple adjustable iris blades that can be independently positioned to create a smooth, tapered flow profile. This segmentation allows each blade to be optimized for minimizing turbulence while collectively maintaining structural integrity and functionality.
Solution Approach 2:
The diaphragm incorporates adjustable iris blades that can dynamically change their position to optimize flow characteristics. This dynamic adjustment capability allows the device to adapt to different flow conditions, minimizing turbulence and pressure drops while maintaining a more complex but adaptable structure.
2Object-affected harmful factors
If adjustable positioning of diaphragm is implemented to tune fluid harmonics, then fluid flow profile is improved, but device complexity increases
Solution Approach 1:
The iris blades are designed with adjustable positioning mechanisms that allow dynamic tuning of the flow profile. This enables optimization of fluid harmonics by adjusting blade positions, while the modular design keeps the complexity manageable through standardized adjustment mechanisms.
Solution Approach 2:
The diaphragm allows for parameter changes in blade position and aperture size to tune fluid harmonics. By varying these parameters, the system can optimize flow characteristics and minimize harmonic distortions without requiring complete redesign for different applications.
3Object-affected harmful factors
If iris blades move in linear path to maintain concentric flow opening, then turbulence is minimized, but manufacturing precision requirements increase
Solution Approach 1:
The iris blades are designed with asymmetric movement paths that constrain them to linear motion. This asymmetric constraint ensures that blades move in a controlled manner to maintain concentric flow openings, minimizing turbulence while the design accommodates reasonable manufacturing tolerances through the overall blade arrangement.
4Measurement precision
If fine adjustments are allowed while maintaining concentric position, then flow control precision is improved, but device complexity increases
Solution Approach 1:
The diaphragm includes a visible indication mechanism that provides external feedback on the aperture opening size. This visual indication system allows for precise control and monitoring of the flow opening without requiring complex measurement devices, simplifying the overall adjustment mechanism while maintaining high control precision.
Data Source
AI summary
An iris-type diaphragm having a rear housing, a front plate, a plurality of iris blades, and a drive iris blade. The plurality of iris blades can be situated in substantially the same plane, with the iris blades being actuatable to adjust an aperture size. The drive iris blade can be in mechanical communication with an actuator and the plurality of iris blades. As the actuator displaces the drive iris blade, the drive iris blade in turn displaces the plurality of iris blades. Adjustable positioning of the iris-type diaphragm effectively tunes fluid harmonics and adjusts the signal to noise ratio, thus producing a more desirable fluid flow profile or signature.