Focus on basic functions and cost: If your requirement is for basic overheating safety protection and you are sensitive to cost, traditional NTC thermistors are a mature and reliable choice.
Seek intelligent cooking and precise temperature control: If you want the induction cooker to have more intelligent cooking functions (such as precise control of oil temperature for frying, low-temperature slow cooking, etc.) and more effective dry-burning protection, then infrared temperature sensors are a better choice, although the cost may be higher.
Supplementary protection for specific scenarios: In some designs, the temperature switch acts as an additional protective barrier for the IGBT power transistor, usually serving as a backup solution after the thermistor fails.
Installation and Usage Notes
Regardless of the type of sensor used, correct installation and usage are of utmost importance:
Ensure proper contact: For contact-type sensors (such as NTC), it is essential to ensure that they are tightly attached to the temperature measurement surface (such as the IGBT heat sink or the back of the microcrystalline board). Typically, thermal conductive silicone grease is used to improve heat conduction. Improper installation can lead to inaccurate temperature measurement and affect the protection effect.
Keep the sensing window clean: For infrared sensors, the sensing window needs to be kept clean to avoid being blocked by oil or moisture. Otherwise, it will seriously affect the measurement accuracy.
Understand the protection logic: The NTC on the surface of an ordinary induction cooker is mainly to prevent the microcrystalline board from cracking due to overheating and to prevent dangerous situations caused by empty cooking. Its action temperature point is set relatively high. Do not expect it to be used for precise cooking temperature control.
Post time: Sep-26-2025