METHOD FOR THE PROTECTION OF A VOLUMETRIC LIQUID-INJECTED COMPRESSOR

摘要

This invention relates to a method for the protection of a volumetric liquid-injected compressor of the type comprising a compressor element (1) driven by a motor (2), a pressure conduit (3), a separator (4) for injection liquid erected in this pressure conduit (3), an injection conduit (6) for injecting the separated injection liquid into the compressor element (1), and an air-cooled cooler (7) in this injection conduit (6). The outlet temperature of the compressed gas is measured and, depending on this temperature and on a limit value, it is determined whether the motor (2) has to be stopped. Also, the temperature in the vicinity of the compressor element (1) is measured and the limit value is rendered dependent on this environmental temperature.