The expansion valve is installed at the entrance of the evaporator. Its function is to eject the high-temperature and high-pressure liquid refrigerant from the liquid storage dryer from the small hole of the expansion valve, reduce the pressure, expand the volume, and convert it into a mist refrigerant. It absorbs heat in the evaporator and becomes a gaseous refrigerant.
The main function of the expansion valve is to control the flow of refrigerant in the air conditioning or refrigeration system. The expansion valve is usually installed at the connection between the condenser and the rear equipment to adjust the amount of refrigerant entering the evaporator.
The major types of pressure regulators can be categorized based on their function and design. Here are the key types:
If the opening degree of the thermal expansion valve is too small, it will cause insufficient liquid supply, so that there is not enough Freon to evaporate in the evaporator, and the refrigerant has evaporated on the way to the evaporator tube. There is no liquid refrigerant in the evaporator tube after this, and only the steam is overheated.
Before installing the thermal expansion valve, check whether it is intact, especially the temperature sensing mechanism.
1.1. 1) Determine the pressure at both ends of the expansion valve; 2) Determine the valve type; 3) Select the valve model and specifications
