Patent ID: 8167982

Claim:
A dryer unit for compressed air and other gaseous media comprising: a housing, which has an inlet for air to be dried and an outlet for dried air, an exchanger unit, which has a multiplicity of hollow membrane fibers, the ends of which are fixed, open, in two holding plates which, together with the housing, delimit a single inlet-side head space and an outlet-side head space, and, a purging air space, connected to the outer surfaces of the membrane fibers, having a purging air inlet and a purging air outlet and being charged with part of the dried air, wherein a coalescent filter is connected upstream of the inlet-side head space, and the coalescent filter has a through flow from the inside outwards and is arranged co-axial with the exchanger unit, wherein the air to be dried is guided through an inside of the hollow membrane fibers, wherein a pressure at an outside of the hollow membrane fibers corresponds to atmospheric pressure, wherein moisture is moved from the inside of the hollow membrane fibers to the outside of the hollow membrane fibers and, after leaving the coalescent filter, air is guided parallel to a longitudinal axis of the housing or a longitudinal axis of the hollow membrane fibers.