Compressor with variable compressor inlet

1. A compressor ( 10 ) for a charging device comprising

a compressor housing ( 100 ) in which a compressor wheel ( 200 ) is arranged, and

a cartridge ( 300 ), which is arranged in the compressor housing ( 100 ) in an area of a compressor inlet ( 110 ), wherein the cartridge ( 300 ) comprises a bearing ring ( 320 ), an adjusting ring ( 330 ), and a plurality of rotatably mounted diaphragm elements ( 310 ), wherein rotation of said rotatably mounted diaphragm elements ( 310 ) also moves the rotatably mounted diaphragm elements ( 310 ) radially to change a cross section of the compressor inlet ( 110 ), and wherein the diaphragm elements ( 310 ) are rotatably mounted in the bearing ring ( 320 ) via shafts ( 340 ), and wherein a lever arm ( 350 ) is provided per diaphragm element ( 310 ) and is in operative connection with the adjusting ring ( 330 ), wherein the lever arm ( 350 ) transfers a movement of the adjusting ring ( 330 ) to the corresponding diaphragm element ( 310 ), and wherein the diaphragm elements ( 310 ) are displaceable between a first position and a second position, wherein the diaphragm elements ( 310 ) are configured so that together they form a circular cross-sectional boundary for the compressor inlet ( 110 ) in the second position.

2. The compressor according to claim 1 , wherein the diaphragm elements ( 310 ) are mechanically coupled to the adjusting ring ( 330 ) so that a rotational movement of the adjusting ring ( 330 ) causes a radial displacement of the diaphragm elements ( 310 ).

3. The compressor according to claim 2 ,

wherein the lever arms ( 350 ) and the diaphragm elements ( 310 ) are arranged on the same side of the bearing ring ( 320 ); or

wherein the lever arms ( 350 ) and the diaphragm elements ( 310 ) are arranged on different sides of the bearing ring ( 320 ) and the shafts ( 340 ) extend through the bearing ring ( 320 ).

4. The compressor according to claim 1 , wherein radially inwardly disposed lateral walls ( 318 ) of the diaphragm elements ( 310 ), which define the cross section of the compressor inlet ( 110 ) in the second position, have a flow-optimized geometry.

5. The compressor according to claim 1 , wherein the diaphragm elements ( 310 ) have corresponding engagement geometries ( 315 ) on lateral surfaces ( 312 , 314 ) contacting one another in the second position, which overlap or mesh into one another in the second position of the diaphragm elements ( 310 ).

6. A charging device with a compressor ( 10 ) according to claim 1 .

7. A compressor ( 10 ) for a charging device comprising

a compressor housing ( 100 ) in which a compressor wheel ( 200 ) is arranged, and

an adjusting mechanism ( 30 ) which is arranged in the compressor housing ( 100 ) in an area of a compressor inlet ( 110 ) for variably changing a cross section of the compressor inlet ( 110 ),

wherein the adjusting mechanism ( 30 ) comprises

a plurality of diaphragm elements ( 310 ), which are rotatably mounted in the compressor housing ( 100 ), and

an adjusting ring ( 330 ),

wherein rotation of said adjusting ring rotates the rotatably mounted diaphragm elements ( 310 ) with radial displacement of the rotatably mounted diaphragm elements ( 310 ) to change the cross section of the compressor inlet ( 110 ), and

wherein a lever arm ( 350 ) is provided per diaphragm element ( 310 ) and is in operative connection with the adjusting ring ( 330 ), wherein the lever arm ( 350 ) transfers a movement of the adjusting ring ( 330 ) to the corresponding diaphragm element ( 310 ), and

wherein the diaphragm elements ( 310 ) are displaceable between a first position and a second position, wherein the diaphragm elements ( 310 ) are configured so that together they form a circular cross-sectional boundary for the compressor inlet ( 110 ) in the second position.

8. The compressor according to claim 7 , wherein the diaphragm elements ( 310 ) are mechanically coupled to the adjusting ring ( 330 ) so that a movement of the adjusting ring ( 330 ) causes a radial displacement of the diaphragm elements ( 310 ).

9. The compressor according to claim 7 , wherein the adjusting ring ( 330 ) is rotatably mounted in the compressor housing ( 100 ).

10. The compressor according to claim 7 ,

wherein the diaphragm elements ( 310 ) are arranged between the adjusting ring ( 330 ) and the compressor housing ( 100 ) in the axial direction; or

wherein the adjusting ring ( 330 ) is arranged radially outside of the diaphragm elements ( 310 ).

11. The compressor according to claim 7 , wherein the adjusting ring ( 330 ) is rotatably mounted in a compressor cover ( 120 ) or on the diaphragm elements ( 310 ).

12. The compressor according to claim 7 , wherein the diaphragm elements ( 310 ) are arranged on a radial plane, and wherein the adjusting ring ( 330 ) is arranged radially outside of the diaphragm elements ( 310 ) in the same radial plane as the diaphragm elements ( 310 ).