Ventilation device and method for producing a ventilation device, rotor and fluid flow engine

The device (1) has air conduit tubes (14) for guiding air from an outer annular space radially toward a rotor shaft, and a support ring (12) for arranging the air conduit tubes in a radially closed intermediate space between two adjacent rotor disks. The support ring forms a radially inner boundary of the intermediate space in a mounted state of the device. The air conduit tubes comprise inflow regions (40) oriented in a rotation direction. The flowing regions are formed in an arc-shape and passes to a radial air conduit tube region i.e. neck region (42). An independent claim is also included for a method for manufacturing a ventilation device.