SCREW-TYPE VACUUM PUMP

摘要

The invention relates to a screw-type vacuum pump which is used, in particular, for compressing in relation to atmospheric pressure, comprising a suction chamber (12) which is arranged in a pump housing (10). Two screw-type rotors (14) which engage with each other are arranged in the suction chamber (12). Said pump also comprises a pressure relief outlet (26) which comprises several pressure relief openings (28) arranged in a lateral wall (24) of the suction chamber (12).