Burner Control Unit Fuel Type Detection via Combustion Modulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gas and oil burner systems lack efficient methods to determine fuel type parameters and adapt to different fuel families, leading to potential operational inefficiencies and safety concerns.
Innovation Solution
A control and regulating unit that determines fuel type parameters based on combustion parameters, modulating fuel and air flows to adjust heating output and infer fuel types, ensuring safe and efficient operation by accounting for temporal changes and differences in fluid densities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If special sensors are used to determine gas type, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical/sensor-based fuel detection systems with a control method that uses combustion parameter analysis. The control unit determines fuel type by analyzing temporal changes in combustion characteristics during controlled heating output variations, eliminating the need for specialized sensors while maintaining determination accuracy.
Solution Approach 2:
The system uses its own combustion parameters and control capabilities to determine fuel type autonomously. The control unit performs self-diagnosis by modulating heating output and analyzing the resulting combustion behavior, allowing the system to identify fuel type without external sensing devices.
2Measurement precision
If heating output is continuously modulated, then fuel type determination accuracy is improved, but energy consumption increases
Solution Approach 1:
The control unit implements periodic modulation of heating output with specific patterns (increase to first value, then decrease to second value). This periodic action creates distinct combustion parameter profiles that enable accurate fuel type determination while limiting energy consumption through controlled, time-limited modulation cycles.
Solution Approach 2:
The system applies partial modulation actions rather than continuous full-power operation. By modulating heating output only to the extent necessary for determination (within 40% of maximum/minimum values), the system achieves sufficient measurement precision without excessive energy consumption.
3Measurement precision
If fuel flow is temporarily varied for determination, then fuel type identification is improved, but operational time increases
Solution Approach 1:
The control unit rapidly modulates heating output through defined value changes (first value then second value) to quickly elicit characteristic combustion responses. This rushed-through approach captures fuel type information in minimal time by skipping intermediate states and focusing on specific diagnostic points.
Solution Approach 2:
The system performs preliminary fuel type determination before normal operation or at scheduled intervals. By conducting the modulation and analysis in advance, the system minimizes impact on operational time while ensuring accurate fuel type identification is available when needed.
4Adaptability or versatility
If heating output is adjusted frequently, then adaptability to different fuel types is improved, but system stability decreases
Solution Approach 1:
The control unit applies different heating output adjustment strategies for different fuel types based on their specific characteristics. By tailoring the modulation pattern (first value and second value selections) to the identified fuel family, the system achieves optimal adaptability while maintaining stability through fuel-specific control parameters.
Solution Approach 2:
The system changes control parameters (heating output values, modulation timing) based on determined fuel type characteristics. This parameter adaptation allows the system to optimize performance for different fuel families while maintaining operational stability through controlled, systematic parameter adjustments rather than random changes.
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 solution enables safe and efficient operation by accurately determining fuel types, adapting to different fuel families, and maximizing heating power efficiency, while also providing a cost-effective means to check correct functionality during normal and startup operations.
Implementation Method 1
determine at least one fuel type characteristic in at least one operating state on the basis of a combustion characteristic
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a heating appliance, in particular a gas and/or oil burner apparatus, comprising a control and/or regulating unit (10) which is provided to determine in at least one operating state at least one fuel type characteristic variable on the basis of a fluid supply characteristic variable (12) and/or a combustion characteristic variable (14).