Compressor Speed Control via Pressure Regulation
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Solution Overview
Problem
Existing compressor/vacuum pump systems experience frequent speed fluctuations and noise intensity variations due to complex speed control mechanisms, leading to premature motor wear and increased maintenance needs, which compromise efficiency and lifespan.
Innovation Solution
A method that regulates the speed of a compressor/vacuum pump by connecting it to a process channel after reaching a preset speed value, using a pressure regulating valve to maintain constant power and minimize torque modulus, thereby reducing speed fluctuations and noise, and employing a controller unit to adjust motor speed based on current parameters within predetermined limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the speed of the compressor/vacuum pump is regulated based on pressure ratio and minimum allowable fluid volume, then the motor damage risk is reduced, but the system complexity increases due to multiple parameters and computational requirements
Solution Approach 1:
The patent changes the control parameter from complex multi-parameter speed regulation (pressure ratio, fluid volume, efficiency operating line) to a simple pressure-difference-based regulation. The pressure regulating valve adjusts fluid flow based solely on the difference between actual and set pressure values, eliminating the need for complex computational determination of optimal speed lines while maintaining motor protection.
Solution Approach 2:
The patent extracts the speed control function from the pressure regulation function. By using a dedicated pressure regulating valve mounted on an influence channel in direct fluid communication with the compressor element, pressure regulation is achieved independently without requiring complex speed control algorithms, thereby reducing system complexity while maintaining reliability.
2Reliability
If the speed is compared with minimum allowable value to prevent motor damage, then motor protection is improved, but speed fluctuations increase causing premature wear
Solution Approach 1:
The patent implements continuous feedback pressure regulation where the pressure regulating valve constantly monitors the pressure difference between the compressor element and the set pressure value, and adjusts fluid flow accordingly. This continuous adjustment prevents speed fluctuations by maintaining stable operating conditions, thereby extending motor lifespan while preserving motor protection.
Solution Approach 2:
The patent connects the compressor/vacuum element to the process channel only after the speed reaches a preset value. This preliminary speed establishment ensures the motor is already operating at a stable speed before connection, preventing sudden load changes and speed fluctuations that would cause premature wear, while the pressure regulation mechanism continues to provide ongoing protection.
3Reliability
If complex speed control mechanisms are used to regulate compressor speed, then motor protection is improved, but noise intensity fluctuates generating unwanted noise effects
Solution Approach 1:
The patent changes the control mechanism from complex speed-based regulation to simple pressure-based regulation. The pressure regulating valve controls fluid flow based on pressure difference, which indirectly stabilizes speed without direct speed control. This eliminates the noise fluctuations associated with complex speed control while maintaining motor protection through stable pressure regulation.
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 stabilizes motor operation, reduces noise fluctuations, extends motor lifespan, and enhances efficiency by maintaining constant power usage, thus minimizing maintenance and operational costs while allowing for a wider range of applications.
Implementation Method 1
regulating the pressure within the compressor/vacuum element by adjusting the volume of fluid flowing between a process channel and the compressor/vacuum element relative to the difference between the pressure value within said compressor/vacuum element and a preset pressure value
Data Source
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AI summary
The present invention is directed to a method for regulating the speed of a compressor/vacuum element, said method comprising the steps of: - starting the compressor/vacuum element (1); - regulating the pressure within the compressor/vacuum element (1) by adjusting the volume of fluid flowing between a process channel (4) and the compressor/vacuum element (1) relative to the difference between the pressure value within said compressor/vacuum element (1) and a preset pressure value; characterized in that the method further comprises the steps of: - connecting the compressor/vacuum element (1) to a process channel (4) after the speed of the compressor/vacuum element (1) reaches a preset speed value; and - adjusting the speed of the compressor/vacuum element (1) such that the power of the compressor/vacuum element (1) is maintained at a relatively constant value.