a value of approximately 60 u00b0 that is the change of direction amounts to roughly 120 u00b0 the inlet channel is initially envisaged as having a diameter of approximately 1 cm the outlet channel as having a diameter of 0 8 cm and the inlet channel as having a length of about 5 cm the preferred embodiment shown is preferably realized in plastic a fourth embodiment of inhaler device 91 is shown in fig9 the inhaler device 91 includes a housing 92 in which a reservoir 93 of inhalable material which may be medicinal is held in a compressed state compression within the reservoir 93 is maintained by a movable base 94 biased by spring 95 a transporting screw or worm 96 is provided within the reservoir 93 for transporting the medium out of the reservoir 93 into a whirl chamber 97 through an opening 98 the whirl chamber 97 is coupled to an inhaling conduit 99 which operates substantially the same as the opening 17 or inhaling piece 61 described above the inhaling conduit 99 and the whirl chamber 97 are formed in an inhaling piece 100 which is placed on the housing 92 the connection between the inhaling piece 100.