Screw compressor configured to compress a process gas and dampen pulsation waves

A screw compressor configured to compress a process gas, comprising:

• a compressor housing having a suction port and a pressure port, wherein the process gas to be compressed is fed to the compressor housing via the suction port and compressed process gas is discharged from the compressor housing via the pressure port;
• screw rotors mounted in the compressor housing and forming a rotor pair configured to compress the process gas;
• a pipe bend, which conducts the compressed process gas from the compressor housing in a direction of a silencer, comprising:
• a first connecting piece for fastening the pipe bend to the pressure port of the compressor housing at an inlet-side portion of the pipe bend, wherein the first connecting piece has a substantially planar surface;
• a second connecting piece for fastening the pipe bend to the silencer, an outlet-side portion of the pipe bend;
• and
• a flow channel extending between the first connecting piece and the second connecting piece, which is defined by an inner wall of the pipe bend;
• an insert on the inlet-side portion of the pipe bend that projects into the flow channel of the pipe bend at least in portions, wherein the insert comprises:
• a collar that projects out of the pipe bend on the inlet-side portion, and which delimits an introduction depth of the insert into the pipe bend on the inlet-side portion and a portion of the insert projects into the flow channel of the pipe bend,
• wherein the collar forms a first planar surface that faces the pressure port;
• and a second planar surface that faces the first connecting piece,
• the portion of the insert that projects into the flow channel extends longitudinally from the planar surface,
• wherein the portion of the insert that projects into the flow channel extends longitudinally from the planar surface and does not extend beyond the planar surface;
• an inner wall of the insert defines a nozzle facing the pressure port between the insert and the collar, and
• an outer wall of the insert projects into the flow channel of the pipe bend and a portion of the inner wall of the pipe bend enclosing the outer wall on an outside delimits a space acting as a resonator, which is coupled to the flow channel of the pipe bend.