目前,在小型氟利昂冷库设计中,多采用热力膨胀阀直接膨胀供液的制冷系统。对仅有一组冷却排管的制冷系统,将热力膨胀阀直接接入系统即可。而大多数冷库都有几组乃至几十组冷却排管,所以对冷却排管的供液方式也有多种:有将几组冷却排管串联连接,用一只热力膨胀阀对其供液的,示意图见图1。该方式由于受排管通路长度的限制,在很小的制冷系统中才有应用;有用一只热力胀膨阀通过分液器等配液装置向几组并联冷却排管供液的。(以下简称分液器供液),示意图见图2。这种方式目前常用;也有用几只热 Currently, in the design of small Freon refrigerator, the use of thermal expansion valve direct expansion of the liquid supply refrigeration system. For a cooling system with only one cooling tube, the thermal expansion valve can be directly connected to the system. Most of the cold storage has several or even dozens of groups of cooling pipe, cooling pipe for cooling the way there are a variety of ways: There are several groups of cooling pipes connected in series, with a thermal expansion valve for its liquid , Schematic diagram shown in Figure 1. This method is limited by the length of the discharge pipe path and is only used in very small refrigeration systems. One thermal expansion valve is used to supply liquid to several groups of parallel cooling discharge pipes through a liquid distributor such as a liquid distributor. (Hereinafter referred to as liquid dispenser), the schematic shown in Figure 2. This method is currently used; also useful to a few hot