SNIA054 January   2023 TMP61

 

  1.   Abstract
  2.   Trademarks
  3. 1Application of Temperature Sensors in Air Conditioner
    1. 1.1 Working Principle of Air Conditioner
    2. 1.2 Application of Temperature Sensors in Air Conditioner
      1. 1.2.1 Temperature Sensors in Indoor Unit of Air Conditioner
      2. 1.2.2 Temperature Sensors in Outdoor Unit of Air Conditioner
      3. 1.2.3 Compressor Exhausted Air Temperature Detection
  4. 2Problems of NTC Thermistors in Air Conditioners
  5. 3Solutions
  6. 4Summary
  7. 5References

1.2.3 Compressor Exhausted Air Temperature Detection

The exhausted air temperature sensor is mainly installed on the exhaust pipe of the compressor. Usually, an NTC thermistor with a resistance of 50K is selected. By detecting the temperature of the exhaust pipe of the compressor, the opening degree of the expansion valve can be controlled. When the temperature of the exhaust pipe is too high, the compressor is turned off for overheat protection.

GUID-20221219-SS0I-R1TG-BMZL-B0X87TFBC2XH-low.jpg Figure 1-5 Compressor Discharge Temperature Sensor Installation