Radial compressor

Abstract

A compressor having a rotor which extends along an axis of rotation, a housing, wherein the housing is arranged around the rotor, wherein the housing has an axial inflow and, downstream of the axial inflow, a first compression stage and, further downstream of the first compression stage, a radial outflow for a process fluid, the radial outflow leading through the housing, and an impeller which is arranged on the rotor, with an injection device for injecting a fluid into the axial inflow.

1 . A compressor comprising:
 a rotor which extends along a rotation axis,   a housing,   wherein the housing is arranged around the rotor,   wherein the housing has an axial inflow and downstream of the axial inflow has a first compressor stage and further downstream of the first compressor stage has a radial outflow for a process fluid,   wherein the radial outflow leads through the housing,   an impeller which is arranged on the rotor,   characterized by an injection apparatus for injecting a liquid into the axial inflow,   wherein the process fluid which is intended to be compressed is initially drawn in and a quantity of injected liquid is carried out in accordance with a temperature and relative humidity of a medium drawn in.   
     
     
         2 . The compressor as claimed in  claim 1 ,
 wherein an evaporation temperature of the liquid is lower than the temperature of the process fluid which is intended to be compressed after injection in the first compressor stage.   
     
     
         3 . The compressor as claimed in  claim 1 ,
 further comprising a control device which is configured in such a manner that the quantity of injected liquid can be controlled.   
     
     
         4 . The compressor as claimed in  claim 1 , wherein the injection apparatus is configured in such a manner that the injection of the liquid is carried out within the medium which is intended to be compressed. 
     
     
         5 . The compressor as claimed in  claim 1 , wherein the injection of the liquid is carried out in front of the impeller. 
     
     
         6 . The compressor as claimed in  claim 1 , wherein the compressor has a helical stage and the injection of the liquid is carried out in the helical stage. 
     
     
         7 . The compressor as claimed in  claim 1 , wherein the compressor has an inlet and the injection of the liquid is carried out in the inlet. 
     
     
         8 . The compressor as claimed in  claim 1 , wherein the compressor has a return stage and the injection of the liquid is carried out in the return stage. 
     
     
         9 . The compressor as claimed in  claim 1 , wherein the injection of the liquid is carried out via a plurality of nozzles. 
     
     
         10 . The compressor as claimed in  claim 9 , wherein the compressor has an impeller inlet having an impeller inlet diameter, wherein a spacing between a last nozzle in front of the impeller and the impeller inlet is three times the impeller inlet diameter. 
     
     
         11 . The compressor as claimed  claim 9 , wherein the compressor has an impeller inlet having an impeller inlet diameter, wherein a spacing between a last nozzle in front of the impeller and the impeller inlet is 10 times the impeller inlet diameter. 
     
     
         12 . The compressor as claimed in  claim 9 , wherein the plurality of nozzles are arranged with spacing from each other in an axial direction and form a cascading injection. 
     
     
         13 . The compressor as claimed in  claim 9 , wherein the plurality of nozzles are arranged to be offset from each other. 
     
     
         14 . The compressor as claimed in  claim 9 , wherein the quantity of injected liquid can be controlled by switching the plurality of nozzles on and off. 
     
     
         15 . The compressor as claimed in  claim 1 , wherein the quantity of injected liquid can be controlled by a speed. 
     
     
         16 . The compressor as claimed in  claim 1 , wherein the quantity of injected liquid is carried out by means of a bypass control. 
     
     
         17 . The compressor as claimed in  claim 1 , wherein the injection apparatus for injection is configured in such a manner that an admixture of water and alcohol can be injected. 
     
     
         18 . The compressor as claimed in  claim 1 , wherein the injection apparatus for injection is configured in such a manner that an admixture has water and ethanol and/or water and methanol. 
     
     
         19 . The compressor as claimed in  claim 1 , in a form of a radial compressor. 
     
     
         20 . The compressor as claimed in  claim 19 , wherein the compressor is configured in one stage. 
     
     
         21 . The compressor as claimed in  claim 19 , wherein the compressor is configured with multiple stages.