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前言在中小型空调器中,广泛采用毛细管作为节流元件,这是因为: 1.毛细管结构简单,没有运动部件,成本便宜 2.能在停机后迅速使高低压两测压力平衡,这对于低启动转矩电机尤为重要在毛细管系统中制冷剂充灌量的多寡是十分重要的。因为一般在该种系统中无储液器可用于储存过多的制冷剂。制冷剂过多会使排气压力过高,电机超载,以及在停机时液态制冷剂会进入压缩机;制冷剂过少则会使气体进入毛细管,制冷量减少。
In small and medium-sized air conditioners, the capillary is widely used as a throttling element, which is due to: 1. Capillary structure is simple, there are no moving parts, the cost is cheap 2. In the shutdown can quickly make pressure measurement of high and low pressure balance, which is low It is important to start the torque motor. It is important that the amount of refrigerant in the capillary system be sufficient. Because typically no accumulator in this system can be used to store excess refrigerant. Excessive refrigerant pressure will cause the exhaust pressure is too high, the motor overload, and in the shutdown liquid refrigerant will enter the compressor; refrigerant is too small will make the gas into the capillary, reducing the cooling capacity.