Freon compressor: There are many types of compressors. According to different working principles, compressors can be divided into fixed displacement compressors and variable displacement compressors.MESSAGES
There are many types of compressors. According to different working principles, compressors can be divided into fixed displacement compressors and variable displacement compressors.
l. The displacement of the fixed-displacement compressor increases proportionally with the increase of the engine speed. It cannot automatically change the power output according to the cooling demand, and has a relatively large impact on the engine fuel consumption. Its control is generally realized by collecting the temperature signal of the air outlet of the evaporator. When the temperature reaches the set temperature, the compressor stops working; when the temperature rises, the compressor starts to work twice. The fixed displacement compressor is also controlled by the pressure of the air conditioning system. When the pressure in the pipeline is too high, the compressor stops working.
2. The variable displacement compressor can automatically adjust the power output according to the set temperature. The air-conditioning control system does not collect the temperature signal of the tuyere of the evaporator, but controls the compression ratio of the compressor according to the pressure change signal in the air-conditioning pipeline to automatically adjust the temperature of the tuyere. In the whole process of refrigeration, the compressor is always working, and the adjustment of the refrigeration intensity is completely controlled by the pressure regulating valve installed inside the compressor. When the pressure at the high-pressure end of the air-conditioning pipeline is too high, the pressure regulating valve shortens the piston stroke in the compressor to reduce the compression ratio, which will reduce the refrigeration intensity. When the pressure at the high-pressure end drops to a certain level and the pressure at the low-pressure end rises to a certain level, the pressure regulating valve increases the piston stroke to improve the refrigeration intensity.
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