Variable frequency air conditioning and NTC temperature sensor.Small Human Body Sensor

　　The biggest difference between variable frequency air conditioning and constant frequency air conditioning is the compressor. The constant speed compressor has been replaced with a variable frequency compressor and a variable frequency control system has been added, which is equipped with an NTC temperature sensor. Its function is to detect the air in the air-conditioned room, control and regulate the normal operation of the air conditioning. In order to automatically adjust the temperature inside the room, temperature sensors must be installed in the air conditioning system. Accurate temperature control is possible.

　　Variable frequency air conditioning is achieved by setting the difference between the working temperature and indoor temperature for variable frequency speed regulation. The larger the difference, the higher the operating frequency of the compressor. The indoor coil NTC temperature sensor plays a protective detection role in the cooling of the indoor coil, detecting the lack of fluoride in refrigeration, preventing the blowing out of cold air during heating, and detecting overheating protection. If the indoor coil temperature drops below+3 ℃ to prevent frosting and also shut down (supercooling) for heating, the outdoor coil NTC temperature sensor plays a role in detecting the heating defrosting temperature and cooling condensation temperature. Variable frequency refrigeration reduces the frequency to prevent the coil from continuing to heat up.

　　The function of the outer ring temperature NTC temperature sensor is to control the speed of the outdoor fan and preheat the compressor in winter. The exhaust NTC temperature sensor is used to reduce the frequency of the variable frequency compressor, avoiding external overheating, fluoride deficiency detection, etc. The suction NTC temperature sensor has the function of controlling the refrigerant flow rate and controlling the throttle valve with a stepper motor.

Read recommendations:

The working principle of NTC thermistor in the control system.Automatic machine mirror

How much is a meter of network cable?Human Body Sensor Light

HW-M09-2 microwave sensor module

Quad probe PIR Lens

PIR Lens 7601-16