NTC溫度感測器應用於電鍋

Smart rice cookers are a widely used household appliance. In addition to cooking rice, they have many other functions and uses.

How is its temperature control? What is the temperature?

兩個 NTC 溫度感測器 (熱敏電阻的一種) 電鍋中常用熱敏開關，透過檢測內鍋內產生的熱量來精確監控和控制米飯的煮飯溫度, 實現一致的烹飪效果. NTC熱敏電阻可以更靠近電鍋內部, 降低溫度測量的滯後質量.

電鍋溫度感測器探頭 & 連接電纜組件

Smart rice cooker temperature probe assembly

Electric pressure cooker bottom temperature sensor

The maximum heating temperature of the rice cooker is controlled at 103℃, and the insulation temperature is controlled at 65℃. There is a temperature control device inside.

It is mainly composed of a heating plate, a temperature limiter, an insulation switch, a lever switch, a current limiting resistor, an indicator light, a socket, ETC. Its temperature control is divided into two processes. When cooking rice, first heat it to 103℃ to cook the rice. After the power is turned off, use the preheating of the electric heating plate to simmer the rice, and then keep it warm at 65-70℃.

The temperature control of the rice cooker is through a metal sheet detection circuit. The metal sheet is made of two metal sheets with different expansion. Install it on the heating plate to feel the temperature of the heating plate. The heating temperature is heated by the heating plate, and the heating plate is equipped with a temperature control element temperature sensor. Through the control of the temperature sensor, it is particularly pointed out why the temperature sensor should be used to control the temperature. When the rice cooker is cooking, the boiling point of water is 100℃ under standard atmospheric pressure. As the air pressure increases, when the rice cooker is used to cook rice, a relatively sealed space is formed inside the rice cooker when the top cover is closed. During the heating process, as the water vaporizes, the air pressure inside the rice cooker will increase, and the boiling point of the water will rise accordingly. The rice cooker is not equipped with a temperature sensor element to control the temperature, which may easily cause the rice cooker to explode and cause danger. The function of the NTC temperature sensor is that when the temperature rises to a certain temperature, the power supply will be disconnected due to expansion and deformation. When the temperature drops, the metal sheet will return to its original state and continue to be powered on. The characteristics of the temperature sensor are very suitable for the temperature control of the rice cooker.

The above content is about the application of NTC temperature sensors in automobiles and rice cookers. In fact, there are many places where NTC temperature sensors are used in life and production. In fact, NTC temperature sensors have many functions, and I hope they can play a lot of roles.