Composition of expansion valve of air energy water heater
One end of the balancing tube is connected with the outlet of the evaporator and is slightly away from the temperature sensitive bag, and is connected with the valve body directly through the capillary pipe. The function is to deliver the actual pressure of the evaporator outlet to the valve body. There are two diaphragms in the valve body. The diaphragm moves upward under pressure, reducing the refrigerant flow through the expansion valve and balancing the dynamic
The temperature sensitive package is filled with refrigerant which is in the state of gas-liquid equilibrium and saturation, and the partial refrigerant is not communicated with the refrigerant in the system. It is usually tied to the evaporator outlet pipe, superheated steam temperature of close contact with the pipe to feel the outlet of the evaporator, the refrigerant because it is saturated, so according to the saturation temperature transfer temperature pressure to the valve body.
The internal structure of the air energy heater consists of four core components, namely, a compressor, a condenser, an expansion valve and an evaporator. The expansion valve is composed of three parts: valve body, temperature sensitive bag and balance tube
Expansion valve is an important component of the refrigeration system, the ideal expansion valve should work with the changes in the load of the evaporator, real-time change of opening, control flow. But in fact, because the temperature of feeling temperature hysteresis in heat transfer, resulting in expansion valve response is always slow. Expansion valve is good or bad reflected in the magnitude of the twists and turns, the greater the amplitude, indicating that the valve reaction is slower, the quality of the worse.
