Burner Head Flame Chamber for Low-Heat Flame Detection
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Solution Overview
Problem
Conventional combustion-type cooking devices struggle to maintain a flame in low calorific modes due to external air or pressure, leading to flame extinction and failure in flame detection.
Innovation Solution
A cooking device with a burner that includes a mixed gas chamber, a flame remaining chamber, a burner cap, and a flame detection unit, allowing continuous flame detection and prevention of extinction even in low calorific modes by controlling the gas flow through a gas valve and ignition unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the flame is kept close to the burner for detection, then the detection response is fast, but the flame is easily extinguished by external air or pressure in low calorific modes
Solution Approach 1:
The burner assembly is divided into separate functional chambers: a mixed gas chamber for combustion and a flame remaining chamber for stable flame maintenance and detection. This segmentation allows the flame to be isolated in a protected environment while still enabling detection, resolving the contradiction between detection accuracy and flame stability.
Solution Approach 2:
The flame remaining chamber acts as an intermediary structure that shields the flame from external air and pressure while allowing the flame detection unit to monitor the flame. This intermediary chamber provides a stable microenvironment that protects the flame during low calorific operation.
2Ease of operation
If the calorific value is reduced for gentle cooking, then the cooking precision is improved, but the flame becomes vulnerable to extinction by external air or pressure
Solution Approach 1:
By separating the mixed gas chamber from the flame remaining chamber, the system enables low calorific output while maintaining flame stability through the protected chamber structure. The flame remaining chamber specifically supports gentle cooking modes by preventing flame extinction despite reduced calorific value.
Solution Approach 2:
The flame remaining chamber creates a protected, relatively inert environment that shields the flame from external air currents and pressure changes. This allows the burner to operate at low calorific values for precise cooking control without the flame being extinguished by external factors.
3Measurement precision
If the thermocouple is positioned close to the burner for detection, then the detection sensitivity is high, but the electromagnetic valve is blocked when the flame is small
Solution Approach 1:
The flame detection unit is relocated to the flame remaining chamber, separating the detection function from the combustion chamber. This allows the flame to be detected in a stable, protected environment, preventing false negatives that would trigger unnecessary valve shutdowns during low calorific operation.
Solution Approach 2:
The flame remaining chamber serves as an intermediary space that protects the flame from external conditions while allowing the flame detection unit to continuously monitor the flame. This intermediary structure ensures that small flames are detected accurately without causing the electromagnetic valve to block incorrectly.
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 stable flame maintenance and continuous detection across various calorific modes, preventing unintended gas supply cutoffs and ensuring reliable cooking performance.
Implementation Method 1
a flame detection unit provided at the flame remaining chamber
Implementation Method 2
an ignition unit to ignite the mixed gas supplied to the mixed gas chamber
Data Source
AI summary
A cooking device is provided. The cooking device includes a burner body having a nozzle to supply a gas, a burner head provided above the burner body, and having a mixed gas chamber in which air and the gas injected from the nozzle are introduced. a burner cap provided on the burner head, a flame remaining chamber provided at the burner head and separated from the mixed gas chamber, and a flame detection unit to pass through the burner head and located at the flame remaining chamber.