METHOD FOR CONTROLLING A COMPRESSOR ELEMENT OF A SCREW COMPRESSOR

摘要

Method for controlling a compressor element of a screw compressor, and the said compressor element (1) has a housing (2) with two meshing helical rotors (3-4) in it that are each supported in the housing (2) in the axial direction (X-X') by means of at least one axial bearing (13 and/or 22), and whereby the housing (2) has an inlet side (10) and outlet side (11), characterised in that this method comprises a process A and/or a process B, whereby: - process A comprises a first step of switching on a first magnet (17) during start-up of the compressor element (1), such that this magnet (17) exerts a force on an aforementioned rotor (3) that is directed from the outlet side (11) to the inlet side (10), and of switching off this first magnet (17) during nominal operation of the compressor element (1); and whereby - process B comprises a first step of keeping a second magnet (21) switched off during start-up of the compressor element (1), and switching on this second magnet (21) during nominal operation of the compressor element (1), such that this second magnet (21) exerts a force that is directed from the inlet side (10) to the outlet side (11).