Hot Surface Igniter Voltage Control for Temperature Stability
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Solution Overview
Problem
Conventional hot surface igniters suffer from short service life due to inaccurate temperature control and adverse operating conditions, particularly in applications with fluctuating voltages and environments, leading to potential damage and reduced lifespan.
Innovation Solution
A temperature control system for hot surface igniters that includes a power supply module, storage module, collection module, determination module, calculation module, and control module to precisely adjust output voltage based on temperature differences and electrical parameters, ensuring the igniter operates at a set target temperature and preventing anomalous power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If constant-voltage power supply method is used, then the igniter reaches high temperature quickly, but the temperature is not adjustable and service life is reduced
Solution Approach 1:
The patent applies dynamic voltage adjustment by switching between multiple voltage levels (first voltage level during initial heating, second voltage level during maintenance phase) based on temperature feedback. This dynamic control allows the system to achieve both rapid heating and extended service life by adapting voltage output to different operational phases and temperature conditions.
Solution Approach 2:
The patent implements a feedback control mechanism where the controller receives temperature information from the heating element and adjusts the voltage level accordingly. When temperature reaches the target range, the controller switches from first voltage level to second voltage level, maintaining temperature while reducing stress on the heating element, thus extending service life.
2Adaptability or versatility
If the igniter operates continuously in fluctuating voltage and temperature environments, then it meets special application requirements, but the service life is significantly reduced
Solution Approach 1:
The system dynamically adjusts voltage levels based on real-time temperature feedback and operational phase, enabling continuous operation under varying conditions. The controller switches between first and second voltage levels to maintain optimal temperature while reducing thermal stress during continuous operation, thereby extending service life in demanding applications.
Solution Approach 2:
The patent employs a two-stage voltage strategy where the second voltage level (lower than first voltage level) is activated when target temperature is reached. This preemptive reduction in voltage during maintenance phases cushions the heating element against excessive thermal stress and prolonged high-temperature exposure, extending service life during continuous operation.
3Loss of time
If voltage is increased to achieve faster heating, then ignition time is reduced, but temperature control precision deteriorates
Solution Approach 1:
The patent uses periodic voltage adjustment in two distinct phases: initial heating phase with first voltage level for rapid temperature rise, and maintenance phase with second voltage level for precise temperature control. This periodic switching based on temperature feedback achieves both fast ignition and precise temperature maintenance.
Solution Approach 2:
The system changes the voltage parameter from first voltage level to second voltage level based on temperature feedback. This parameter change enables the system to achieve rapid heating during initial phase and precise temperature control during maintenance phase, resolving the contradiction between heating speed and control precision.
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 system achieves precise temperature control, prolonging the service life of hot surface igniters by adjusting voltage to maintain optimal operating conditions and preventing damage from over-temperature and anomalous environments.
Implementation Method 1
a voltage is applied to the hot surface igniter by a power source, and then a heating element of the hot surface igniter operates for ignition
Data Source
AI summary
A temperature control system for a hot surface igniter, the system including: a power supply module, for supplying power to the control system; and further comprising: a storage module, which pre-stores a set target temperature; a collection module, for collecting and obtaining the current temperature of the hot surface igniter; a determination module, for determining whether the current temperature of the hot surface igniter matches the target temperature; a calculation module, for obtaining the temperature difference value between the target temperature and the current temperature by calculation using the current temperature when the current temperature does not match the target temperature, and obtaining a voltage control quantity according to the temperature difference value; and a control module, for automatically controlling an output voltage of the power supply module according to the obtained voltage control quantity until it is determined that the current temperature of the hot surface igniter matches the target temperature. The present disclosure can enable the hot surface igniter to obtain a suitable voltage to ensure that the hot surface igniter operates at a set target temperature, thereby realizing precise control over the operating temperature of the hot surface igniter, and increasing the service life of the hot surface igniter