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氟利昂制冷系统正确的设计包括这三个要求:1、供液均匀;2、回气均匀;3、回油均匀;回油是管路设计的关键问题之一,也是一个麻烦而必须解决的问题。因氟利昂制冷剂与润滑油的溶解度,有互溶的,微溶的,也有在高压时互溶而在低压时分离(R11、R12、R21、R113、R500互溶,R502微溶,R22、R114部分溶解)。液体管不存在这个回油问题,它只出现在排出气体管和回气管路上。在制冷装置内少量润滑油与排出气体一起进入系统,随着整个系统的正常运行,必须使这部分油与制冷剂一起,在一定的比值
Freon refrigeration system, the correct design, including these three requirements: 1, for the liquid evenly; 2, return air evenly; 3, uniform return; back to the oil pipeline design is one of the key issues, but also a problem that must be solved . Due to the solubility of Freon refrigerants and lubricating oils, there are mutual solubility and slight solubility, and they also dissolve at high pressure and separate at low pressure (R11, R12, R21, R113 and R500 are mutually soluble, R502 is slightly soluble and R22 and R114 are partially dissolved) . Liquid pipe does not exist this back to the oil problem, it only appears in the exhaust gas pipe and return pipe. A small amount of lubricating oil in the refrigeration unit enters the system together with the exhaust gas, and with the normal operation of the entire system, it is necessary to make this part of the oil together with the refrigerant at a certain ratio