Solenoid valve is a kind of shut-off valve that relies on electromagnetic force to switch automatically. In refrigeration and air-conditioning devices, solenoid valves are commonly used as remote control shut-off valves, regulating organs or safety protection equipment for two-position regulating systems. It can be applied to various gases, liquid refrigerants, lubricating oil and other media.
For some early small and medium-sized unit units, the solenoid valve is connected in series on the liquid pipe before the throttling device and connected to the same start switch as the compressor. When the compressor is turned on, the solenoid valve is opened to connect the system pipeline to make the air-conditioning system operate normally. When the compressor stops, the solenoid valve automatically cuts off the liquid pipeline, preventing the refrigerant liquid from continuing to flow to the evaporator, and preventing the refrigerant from causing liquid shock when the compressor restarts.
In central air-conditioning (multi-line) systems, solenoid valves are more widely used in the system, including: pilot valves that control four-way valves, compressor exhaust and return lines, cooling circuits, and so on.
The role of vacuum solenoid valve
The vacuum solenoid valve acts in the pipeline system. It can use the electromagnetic principle to realize the vacuum treatment of the pipeline, and realize the electromagnetic control at the same time, which can have a greater impact on the entire working state of the pipeline system, and the use of the vacuum solenoid valve can also effectively Avoid the influence of other irrelevant factors on the pipeline, so as to make correct adjustments to the working state of the pipeline system. This is a very efficient adjustment method, which can not only maintain the normal operation of the pipeline system, but also maintain a steady flow rate of the medium in the pipeline. This is very important for the safety of the pipeline transportation system. The system is guaranteed to be safe.
The role of central air-conditioning solenoid valve
The central air-conditioning solenoid valve is a key component that regulates the cooling and heating of the central air-conditioning. We know that the solenoid valve is composed of a solenoid coil and a magnetic core. When the central air conditioner is started, the solenoid coil generates electromagnetic force to make the valve open, and the refrigerant starts to act. After reaching the set temperature, the solenoid valve coil is de-energized. The electromagnetic force disappears and the refrigerant cycle is closed, thereby adjusting the temperature.
The role of gas solenoid valve
The gas solenoid valve is a safety emergency shut-off device for the gas pipeline. It can be connected to the gas leakage alarm system or to the fire control and other intelligent alarm control terminal modules, etc., to realize on-site or remote automatic/manual emergency cut-off of the gas source to ensure the safety of gas use. When a harmful strong vibration occurs, the valve will automatically close. The valve must be opened manually after manual intervention to meet safety management regulations and meet the characteristics of accident handling.
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