Do you know the throttling structure of air-cooled chillers? Do you know what role they play?.

        Throttle structure of air-cooled chiller is the role of the condenser or condenser in under the pressure of saturated liquid refrigerant (or supercooled liquid) to throttling evaporating pressure and evaporating temperature, the refrigerant flow at the same time according to the change of the cooling load regulation into the evaporator, a throttling mechanism, we have used the manual throttle valve, capillary thermal expansion valve, float valve, capillary does not have a regulatory function, the three throttle valve can also adjust the flow into the evaporator of the refrigeration unit, to adapt to the changes of the cooling load, so as to achieve the purpose of refrigeration.

1, capillary: it is a kind of throttling mechanism is the most simple, in the refrigerator, air conditioner, small dehumidifier, small ice machine and other small freon refrigeration equipment, the condensation temperature and evaporation temperature changes little, and the cooling capacity is small, in order to simplify the structure, generally used as throttling capillary structure.

2, manual throttle valve: also known as the valve or expansion valve, throttle valve is the most old-fashioned, used for industrial chiller equipment, adjust the valve hole with manual mode to change the flow area to the evaporator for the liquid volume in the Freon chiller refrigeration system, manual throttle valve installed as a backup the valve in the bypass pipe on the road, while the use of automatic throttle structure maintenance.

3, the floating ball valve: short float valve, regulating valve control flow is according to the change of liquid level and liquid level control throttling plays a role, it is a kind of automatic adjustment of the throttle valve, the evaporator is used to have the free surface (such as shell and tube type, vertical tube and spiral tube etc.) and the automatic adjustment of the gas-liquid separator and the intercooler for fluid volume, it is mainly used for air cooled machine.

4, thermal expansion valve, widely used in air-cooled chiller system, temperature regulation type throttling valve, also known as the thermal regulating valve, the evaporator outlet temperature change with refrigerant, through temperature sensing mechanism, automatic control valve opening to control the refrigerant flow, thermal expansion valve mainly by the valve body, the temperature sensing bag and capillary, suitable for evaporator no free surface, such as dry evaporator, snake tube evaporator and coil intercooler etc..