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调节蒸发器制冷剂流量的常规方法是:毛细管、热力膨胀阀、浮球阀和手动阀。经40多年的发展,现在,人们已可能用电气感应的方法来调节流量。胜家控制公司625型热电膨胀阀实现了上述膨胀阀的作用(见图1)。进一步说,这种热电膨胀阀已取代了机械制冷系统中的热力膨胀阀,感应蒸发器负载的大小来调节进入蒸发器的制冷剂流量,它是电动的并受装于吸入管路上的液感应热敏电阻的控制,如果蒸发器出口温度在0F(℃)过热,整个蒸发器表面就得到充分利用,其机组能量约可增长10%。现代制冷系统中,膨胀阀对蒸发压缩循环有二个重要作用:1.保持冷凝器和蒸发器之间的压差,形成制冷循环系统的节流部件。2.控制制冷循环中紧接着的吸热部分保持蒸发器的一定工况,以满足特定的使用要求。
Conventional methods of regulating evaporator refrigerant flow are: capillary, thermal expansion valve, float valve and manual valve. After more than 40 years of development, it is now possible to adjust the flow using electrical sensing. Winner Control Company 625 thermoelectric expansion valve to achieve the role of the expansion valve (see Figure 1). Further, this thermoelectric expansion valve has replaced the thermal expansion valve in a mechanical refrigeration system to sense the magnitude of the evaporator load to regulate the flow of refrigerant into the evaporator, which is electrically powered and is hydraulically loaded on the suction line Thermistor control, if the evaporator outlet temperature is 0F (℃) overheating, the entire evaporator surface is fully utilized, the unit energy increased by about 10%. In modern refrigeration systems, expansion valves have two important roles in evaporative compression cycles: 1. Maintaining the pressure differential between the condenser and evaporator to create a throttling component of the refrigeration cycle. 2. Control the refrigeration cycle immediately after the heat-absorbing part of the evaporator to maintain certain conditions to meet the specific requirements.