open into the recesses 26 in opposite directions with the openings being as far apart as possible in the steam flow direction so that the steam has to flow along an arcuate path of substantial length before it reaches the opening of the water droplet trap 27 as shown in more detail in fig8 water droplet traps 27 are likewise formed as slots extending over the full height of cylindrical recesses 26 heater element 17 is located as closely to water droplet traps 27 as possible so as to ensure optimum evaporation of the condensate collecting in water droplet traps 27 second layer 10 is of course designed so as to cover the upper ends of water droplet traps 27 the diameter of outlet channels 20 has to be dimensioned in accordance with the diameter of recesses 26 otherwise layers 10 and 11 of the first embodiment may be employed substantially without any change the steam conduit system according to the invention acts in the following manner steam supplied via supply hose 6 to supply channel 12 1 enters first recess 13 1 or 16 1 respectively as a result of supply channel 12 1 entering the respective recess in a tangential direction the steam entering recess 13 1 or 26 1 is constrained to flow along a circumferentially extending flowpath so that any entrained water droplets are caused to impinge on the cylindrical wall of the recess by the resultant centrifugal forces the dryer steam collects in the central region and escapes upwards through outlet channel 20 1 coaxially aligned with the respective recess 13 1 or 26 1 the steam then flows through first connecting channel bore 23 1 and 21 2 into the cylindrically enlarged end portion of.