浅谈智能炒菜机用温度传感器

Number of Views:58322022-06-15 08:44:58

The intelligent cooking machine needs to strictly control the temperature in the pot of each cooking step during the cooking process. The temperature control ensures the cooking quality of Chinese food. Chinese food is rich and varied, the cooking methods are diverse, and the required temperature range is wide. The ignition point of edible oil is about 220 ℃ ~ 260 ℃. When frying at high temperature, the temperature of the oil in the pot needs to be burned very high, which can easily lead to fire safety hazards. In order to avoid the problem of fire, the intelligent cooking machine limits the heating temperature range to below the ignition point of the cooking oil, which cannot guarantee the high-quality cooking of some recipes. In order to ensure the quality of the dishes, the intelligent cooking machine must solve the contradiction between the high temperature stir-frying and the ignition point of the cooking oil, and the high-temperature stir-frying is safe. Therefore, it is necessary to choose a high-temperature, fast-response, high-precision NTC temperature sensor built into the temperature control system of the intelligent cooking machine, which can accurately sense the temperature in the pot. The sensor can accurately sense the temperature in the pot and feedback the temperature to the temperature control system.
Production of NTC temperature sensors used in cooking machines, using gold electrode chips to encapsulate a glass-sealed thermistor, stainless steel thread design combined with high temperature resistant wires, double-layer sealing process, good insulation sealing, resistance to mechanical collision, good stability , High reliability, high temperature resistance (up to 420 ℃), fast response and other characteristics.
The following is the preparation method of the NTC temperature sensor of the cooking machine:
(1) Using a gold electrode chip to encapsulate a single-ended glass-encapsulated thermistor with a glass encapsulation process;
(2) welding the thermistor obtained in step (1) with the electronic wire, then inserting the thermistor into the casing, and filling the space between the casing and the thermistor with a potting compound;

(3) sintering the semi-finished product obtained in step (2) at high temperature to obtain a high temperature resistant temperature sensor;

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