In the embodiments of the invention, the outlet device 9 may have the form of an end diffusor of the suction device 6 by means of which the extracted air and the received driving medium is discharged, with this end diffusor being realized with {HEAD ~ a view} to thereby reducing {TAIL ~ the exit losses} 
In the embodiments of the invention , the outlet device 9 may have the form of an end diffusor of the suction device 6 by means of which the extracted air and the received driving medium is discharged , with this end diffusor being realized with { HEAD ~ a view } to thereby reducing { TAIL ~ the exit losses }
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