Premix Gas Burner Temperature Measurement
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Solution Overview
Problem
Temperature measurement systems in premix gas burners with fiber-based substrates supported by screens or perforated plates are not reliable or reproducible, affecting combustion stability and measurement accuracy.
Innovation Solution
A premix gas burner design featuring a fiber-based substrate supported by a screen or perforated plate with thermocouples fixed to the burner deck, where the fiber substrate is locally connected to the perforated plate or screen within a defined area, providing stable and reproducible temperature measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermocouples are fixed to the burner deck using conventional methods, then temperature measurement is achieved, but the measurements are not reliable or reproducible
Solution Approach 1:
The fiber-based substrate is locally connected to the perforated plate or screen within a specifically defined area (circle with diameter of 50 mm) around the thermocouple projection point. This localized connection creates a stable thermal measurement zone while preserving the overall burner structure, directly addressing the reliability and reproducibility issues of temperature measurements.
2Stability of the object's composition
If the fiber based substrate is extensively connected to the perforated plate, then structural stability is improved, but temperature measurement reliability deteriorates
Solution Approach 1:
Instead of extensive connections, the invention implements localized connections of the fiber-based substrate to the perforated plate within a 50 mm diameter area around the thermocouple. This concentrated local connection provides sufficient structural stability while maintaining the thermal characteristics necessary for accurate temperature measurement.
Solution Approach 2:
The connection between the fiber-based substrate and perforated plate is segmented into a specific localized region rather than being distributed across the entire burner deck. This segmentation isolates the thermal measurement zone from excessive structural interference, enabling both stability and measurement accuracy.
3Measurement precision
If the thermocouple is positioned away from the fiber substrate connection area, then measurement interference is reduced, but combustion stability deteriorates
Solution Approach 1:
The thermocouple is positioned within the localized connection area of the fiber-based substrate to the perforated plate. This strategic positioning ensures the thermocouple benefits from the stabilized combustion zone created by the local connection while maintaining measurement accuracy through proper spatial arrangement within the 50 mm diameter area.
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
The design ensures reliable and reproducible temperature measurements, improving combustion stability and measurement accuracy, and enhancing the response to temperature changes, thus providing a more effective control system for the burner.
Implementation Method 1
The contact wires are directly or indirectly fixed to the burner deck to measure the temperature of the burner deck when the premix gas burner is in operation
Implementation Method 2
at least two contact wires forming a thermocouple
Data Source
Figure 1~3
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Figure 7~9
AI summary
The present invention relates to a premix gas burner. The premix gas burner comprises a burner deck (10) which is itself comprising a fiber based substrate (14) and a perforated plate (12) or a screen supporting the fiber based burner substrate (14). The premix gas burner further comprises at least two contact wires (18) that are forming a thermocouple. The contact wires (18) are directly or indirectly fixed to the burner deck (10) to measure a temperature of the burner deck when the premix gas burner is in operation. The fiber based substrate is locally at least partly connected directly or indirectly to the perforated plate (12) or the screen in the region where the contact wires (18) of the thermocouple are directly or indirectly fixed to the burner deck (10).