Gas Blower Anemometer Integration for Flow Control
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Solution Overview
Problem
Existing gas blowers designed to convey air and fuel gas to burners lack the capability to measure and control the volume flow of the gas mixture, which is essential for efficient operation and safety.
Innovation Solution
A gas blower device equipped with a gas blower, an electric motor, motor electronics, and a fan wheel, integrated with an anemometer at the outlet to measure the volume flow of air and fuel gas, allowing for real-time feedback to control the fan speed and fuel supply, using wireless or magnetic field sensors for signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an anemometer is added to measure volume flow, then measurement capability is improved, but device complexity increases
Solution Approach 1:
The anemometer is integrated into the outlet flange of the gas blower, merging two components (anemometer and flange) into a single unified structure. This eliminates the need for separate mounting brackets or additional fastening components, thereby improving volume flow measurement capability while minimizing the increase in device complexity.
Solution Approach 2:
The outlet flange is designed to serve dual functions: its original structural function for connecting the gas blower to the burner, and a new function as the mounting base for the anemometer. This multi-functionality approach allows the flange to support measurement capabilities without requiring dedicated measurement-specific structural elements.
2Ease of operation
If wireless signal transmission is used, then ease of operation is improved, but reliability deteriorates
Solution Approach 1:
The patent replaces traditional wired mechanical signal transmission with wireless electromagnetic signal transmission. The anemometer communicates volume flow data to the control unit via wireless signals (such as radio frequency communication), eliminating the need for physical cable connections. This substitution improves ease of operation by simplifying installation and maintenance while the short transmission distance and shielded environment maintain signal reliability.
3Measurement precision
If magnets are positioned asymmetrically on the impeller, then measurement precision is improved, but manufacturing precision requirements increase
Solution Approach 1:
The control unit receives signal information from the magnetic field sensor and uses feedback mechanisms to compensate for variations in magnet positioning. By analyzing the signal patterns and comparing them against expected ranges, the system can identify and correct for manufacturing tolerances in magnet placement, thereby maintaining high measurement precision without requiring extremely tight manufacturing tolerances.
Solution Approach 2:
The patent employs multiple magnets on the impeller rather than a single magnet, providing redundant measurement signals. This excessive action approach ensures that even if individual magnet positions vary within manufacturing tolerances, the overall measurement remains accurate due to the combined signal from multiple magnets, thereby reducing the stringency of individual magnet positioning requirements.
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
Enables precise control of the gas blower operation, ensuring efficient and safe combustion by measuring and adjusting the volume flow of the gas mixture in real-time, enhancing the reliability and efficiency of the gas blower system.
Implementation Method 1
the motor electronics have a magnetic field sensor and the impeller anemometer has at least one magnet rotating on an impeller, the volume flow measured by the impeller anemometer being determined by the rotation of the at least one magnet
Data Source
Figure 1
AI summary
The invention relates to a gas blower device comprising a gas blower with an electric motor, motor electronics and a blower wheel driven by the electric motor for generating a volume flow formed from air and fuel gas supplied to the gas blower from an intake to an exhaust of the gas blower, wherein an anemometer for measuring the discharged volume flow is attached to the exhaust of the gas blower, wherein the anemometer has a signal connection with the motor electronics of the gas blower for data transmission of the measured volume flow.