Centrifugal Separator Acoustic Control via Variable Rotor Speed
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Solution Overview
Problem
Modern centrifugal separators operating at high rotational speeds generate significant acoustic emissions, causing disturbance and stress to people nearby, and waste rotational energy during deceleration.
Innovation Solution
The rotational speed of the centrifugal separator's rotor is controlled based on the acoustic emissions of the associated prime mover or working machine, using existing operating parameters or acoustic sensors to ensure the separator operates acoustically undetectably, with energy feedback through braking modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the rotor is operated at high rotational speeds to ensure good cleaning effect, then separating efficiency is improved, but acoustic emissions increase causing disturbance and stress to people nearby
Solution Approach 1:
The patent applies dynamics by making the rotational speed of the rotor variable rather than constant. The control unit continuously adjusts the rotational speed based on real-time acoustic emission levels and cleaning requirements, allowing the system to operate at high speeds when needed for separation efficiency while reducing speeds when acoustic emissions become problematic, thus dynamically optimizing both performance and environmental impact
Solution Approach 2:
The patent changes the operational parameters of the rotor by adjusting rotational speed as a controllable variable. The control unit modifies the rotational speed parameter within a defined range (e.g., 500-5000 rpm) based on feedback from acoustic sensors and cleaning effectiveness monitoring, enabling the system to adapt to different operating conditions and minimize acoustic disturbances while maintaining separation efficiency
2Manufacturing precision
If the rotor is operated at high initial rotational speed to provide good cleaning effect, then separating efficiency is improved, but the rotor runs out/running down for a relatively long time causing continued acoustic emissions and energy waste
Solution Approach 1:
The patent implements feedback control where acoustic sensors continuously monitor the acoustic emissions during rotor deceleration, and this feedback is fed to the control unit. The control unit processes this information and adjusts the rotational speed in real-time, applying braking torque when acoustic emissions exceed thresholds or when cleaning objectives are achieved, thereby preventing unnecessary prolonged operation and reducing energy waste during the run-down phase
Solution Approach 2:
The patent maintains continuous useful action by optimizing the rotor operation throughout its entire cycle including deceleration. The control unit ensures that the rotor continues to provide effective cleaning only as long as needed, using real-time monitoring to determine when the cleaning objective is achieved and when deceleration should begin, thus eliminating the period of useless high-speed rotation that wastes energy and produces unnecessary noise
3Manufacturing precision
If the rotational speed is increased to meet cleaning requirements, then separating efficiency is improved, but drive energy consumption increases
Solution Approach 1:
The patent applies dynamics by implementing variable speed control of the rotor driven by an electric motor. The control unit dynamically adjusts the rotational speed based on real-time monitoring of cleaning effectiveness and acoustic emissions, allowing the system to operate at high speeds only when necessary for separation efficiency while reducing speeds during phases where high performance is not required, thereby optimizing energy consumption
Solution Approach 2:
The patent changes the operational parameters by adjusting the rotational speed parameter within a defined range based on feedback from sensors and control algorithms. The control unit modifies the speed parameter to match the actual cleaning requirements and acoustic constraints, enabling the system to achieve necessary separation efficiency while minimizing drive energy consumption through parameter optimization
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 method significantly reduces acoustic disturbance, allows energy recovery, and maintains separator functionality without being perceived as disturbing, while enhancing durability and reducing energy consumption.
Implementation Method 1
centrifugal separator having at least one rotatably mounted rotor that is set into rotation with a variable rotational speed
Data Source
AI summary
A method for operating a centrifugal separator associated with a prime mover and/or a working machine. The centrifugal separator comprises at least one rotatably mounted rotor that can be rotated at a variable speed via a drive controlled by a control unit. The method is characterized in that the speed of the rotor is controlled according to the sound emissions of the prime mover and/or according to the sound emissions of the working machine.