Function: as a sensing element, it senses the temperature of a specific part and converts the temperature signal into an electrical signal to control the system to run in a specified mode.
The temperature sensor used in refrigerator industry is mainly directly heated negative temperature coefficient (NTC) thermistor, that is, the resistance value decreases with the increase of resistance temperature in the working range.
Precautions for the use of temperature sensors: In order to feel the accuracy of temperature points, each temperature sensor must be fixedly installed in the corresponding position, especially each evaporator temperature sensor must be close to the evaporator and have good contact with the evaporator. The sensing wire and the temperature sensing head must be well sealed without damage or cracking, so as to avoid parameter drift caused by moisture intrusion.
Extended data:
The development process of refrigerator:
185 1 year, Harrison invented the first artificial refrigeration compressor. After research, Harrison made a refrigerator with ether and refrigerator pressure pump, and applied it to a brewery in Victoria, Australia, for cooling during brewing.
1873, German chemist and engineer Karl von Linde invented a refrigerator with ammonia as refrigerant. Later, he improved the industrial refrigerator and miniaturized it. 1879, he made the world's first home refrigerator with artificial refrigeration.
The first refrigerator with motor-driven compressor was invented by Swedish engineers Brighton and Mendes in 1923. Later, an American company bought their patent and produced the first batch of household refrigerators at 1925.
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