Compressor

Abstract

A screw compressor ( 10 ) with at least one screw rotor ( 20, 22 ) which is rotatably arranged about a rotational axis arranged in the axial direction. The at least one screw rotor ( 20, 22 ) is arranged in a compression area ( 24 ) which is fluid-tight against the surrounding area at least in some sections and opens into a high-pressure volume ( 26 ). The compressor ( 10 ) further has a Vi slide ( 28 ) for influencing an inner volume ratio of the compressor, the Vi slide ( 28 ) at least partly forming a section of the fluid-tight border of the compression area ( 24 ) and being arranged such that the position of the slide can be adjusted in the axial direction. The Vi slide ( 28 ) can be continuously displaced, and the compressor ( 10 ) has a device ( 32 ) for detecting the position of the slide.

1 . A screw compressor having at least one screw rotor which is arranged such that it can be rotated about an axis of rotation arranged in the axial direction, wherein the at least one screw rotor is arranged in a compression space, which is designed to be at least in sections fluid-tight in the direction of the surroundings and opens out into a high-pressure volume, wherein the compressor also has a Vi slide for influencing an internal volume ratio of the compressor, wherein the Vi slide forms, at least in part, a portion of the fluid-tight boundary of the compression space and is arranged such that it can be displaced in position in the axial direction,
 wherein   the Vi slide can be displaced in a stepless manner and the compressor has a device for sensing the slide position.   
     
     
         2 . The compressor as claimed in  claim 1 , wherein
 the Vi slide has a slide-position sensor or a position transducer.   
     
     
         3 . The compressor as claimed in  claim 1 , wherein
 the Vi slide has an axially arranged recess, in particular groove, of which the depth increases in the axial direction.   
     
     
         4 . The compressor as claimed in  claim 3 , wherein
 the compressor has a rod with two ends, wherein one end of the rod engages in the recess, and wherein the rod is in operative engagement with a position sensor.   
     
     
         5 . The compressor as claimed in  claim 4 , wherein
 the rod is in operative engagement with an elastic element, in particular a spring.   
     
     
         6 . The compressor as claimed in  claim 1 , wherein
 the compressor has an adjustment device for adjusting the position of the Vi slide.   
     
     
         7 . The compressor as claimed in  claim 6 , wherein
 the adjustment device has a hydraulic device, a pneumatic device or a device for transmitting mechanical force.   
     
     
         8 . The compressor as claimed in  claim 1 , wherein
 the compressor has an open-loop or closed-loop controller for controlling or regulating the position of the Vi slide.