Axial compressor with an injection device for injecting a fluid

In an axial compressor (10) for compressing air, particularly for a gas turbine, the axial compressor (10) has a rotor (11), which is rotatable around a machine axis (27), having a multiplicity of rotor blades (14) and also a casing (13, 13a, b) enclosing the rotor (11) concentrically and at a distance. The casing (13, 13a, b) together with the rotor (11) forms an annular gas passage (12) and outside the gas passage (12) this has an annular and concentric bleed air chamber (16), wherein the bleed air chamber has at least one bleed air slot (17). This slot is in functional communication with the gas passage (12), wherein the axial compressor (10) is equipped with at least one injection device (18; 18', 18a, b) for injecting a fluid. This injection device (18; 18', 18a, b) comprises at least one nozzle (22) which injects the fluid into the gas passage (12) via the bleed air slot (17).