在空调制冷系统中,制冷剂管路可分为高压和低压两部分,高压制冷剂的温度较高,需要冷凝器来冷却，而经过蒸发器的低压，需要气液分离器来分离气态和液态的制冷剂，而液态的制冷剂则需要时间和温度升高蒸发，成为气态后才能进入压缩机，避免液压缩，以延长压缩机的使用寿命。
热交换气液分离器的功能是把高压、高温需要冷却的制冷剂与低压低温需要温度来蒸发的制冷剂两个管路集中通过一个容器中，相互以高低温传递，使得需要冷却的制冷剂得到低温，需要加热的制冷剂得到高温，在经过这一冷热交换的作用后，系统的效率将会大大提升，才能达到更好的制冷效果。
The cold heat change was mad the fluid seperator the function is the cold intermediary and the low pressure, the low temperature which the high pressure, the high temperature needs to cool needs the cold intermediary two pipelines which the tempreature evaporates to concentrate in a vessel, mutually by high low temperature conduction. Enable the cold intermediary which needs to cool to obtains the low temperature, needs to heat up the cold intermediary obtains the high temperature, after passes through the cold heat change function, the system efficiency will be able to the big promotion, to be able to achieve the best refrigeration effect.
