Radial Blower Vibration Feedback for Overload Prevention
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Solution Overview
Problem
Radial blowers in cooling systems face inefficiencies due to continuously changing operating conditions, leading to potential overloading and suboptimal use, which can result in damage and inefficient operation.
Innovation Solution
Implement a method for controlling radial blowers using a vibrometer to detect operating points and send signals to a controller, allowing for real-time monitoring and adjustment to prevent critical states and optimize energy efficiency, with multiple blowers communicating through a network to achieve a regulated energy minimum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operating points of the radial blower are continuously changed to adapt to changing surrounding temperature and heat load, then the cooling system can respond to varying environmental conditions, but the radial blower may be overloaded or operate outside its optimal range, leading to damage or inefficiency
Solution Approach 1:
The patent implements a feedback control system where sensors continuously monitor operating parameters (temperature, pressure, flow rate) and feed this information to a controller. The controller adjusts the radial blower's operating points based on this feedback, ensuring the blower operates within safe and optimal ranges while adapting to changing environmental conditions. This closed-loop control prevents overloading by detecting approaching critical states and adjusting operation accordingly.
2Productivity
If the radial blower operates at maximum capacity to meet cooling demands, then the cooling performance is optimized, but the energy efficiency decreases due to operation outside the optimal operating range
Solution Approach 1:
The patent employs dynamic operating point adjustment where the radial blower's speed and flow characteristics are continuously varied based on actual cooling demands and environmental conditions. Rather than operating at fixed maximum capacity, the system dynamically optimizes the operating point to maintain high cooling performance while operating within the most energy-efficient range of the blower's performance curve. This allows the system to adapt its productivity-energy efficiency balance in real-time.
3Reliability
If monitoring systems are added to detect operating points and prevent critical states, then the reliability and energy efficiency are improved, but the device complexity increases
Solution Approach 1:
The patent implements a self-monitoring and self-adjusting control system where the radial blower system automatically detects its own operating parameters through integrated sensors and adjusts its operation without external intervention. The controller continuously evaluates operating points against pre-defined safe and optimal ranges, and autonomously makes adjustments to prevent critical states. This self-service approach improves reliability while minimizing the need for complex external monitoring infrastructure.
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
Ensures optimal energy efficiency and self-protection of individual radial blowers, preventing critical operating states and maintaining a safe operating range while maximizing energy efficiency across the cooling system.
Implementation Method 1
operating points of the shaft are detected by at least one vibrometer, which is allocated to the shaft
Implementation Method 2
A pressure medium is supplied to the radial gas bearings and the axial gas bearing by channels in the housing, in order to form a hydrodynamic bearing
Data Source
AI summary
A method for controlling at least one radial blower in a cooling system. The radial blower includes a housing in which a shaft is rotationally mounted, which receives at least one impeller wheel of a compressor at one end, which is secured to the housing. The housing includes at least one radial bearing and at least one axial bearing via which the shaft is rotationally mounted in the housing. The radial blower also includes a motor which is driven by a rotor and a stator and which drives the shaft. By means of at least one laser Doppler vibrometer assigned to the shaft, operating points of the shaft are detected and forwarded to a controller for determining an operating status of the radial blower.