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热力膨胀阀是氟利昂制冷系统中控制制冷剂流量的一种节流装置。其结构如图所示。一、工作原理感温包3内装入制冷剂F-12。共数量应能保证感温包内的制冷剂在热力膨胀阀的动作温度范围内始终保持饱和状态。将感温包3平行固定在蒸发器的气体出口管路上方,使二者紧密接。若有液体制冷剂流到蒸发器出口,感温包即被冷却,感温包内的饱压力就降低。
Thermal expansion valve Freon refrigeration system to control the flow of refrigerant a throttling device. Its structure as shown. First, the working principle of temperature package 3 into the refrigerant F-12. The total quantity should ensure that the refrigerant in the temperature sensing package will always be saturated within the operating temperature range of the thermal expansion valve. The temperature package 3 parallel to the evaporator gas outlet pipe above, so that the two closely. If liquid refrigerant flows to the outlet of the evaporator, the temperature sensing package is cooled and the full pressure in the temperature sensing package is reduced.