Abstract: A treatment unit for treating a cooling fluid of a cooling device of a functional system has a container provided with at least one inlet and at least one outlet. A granular ion-exchange medium is arranged in the container in a flow path of the cooling fluid to be treated flowing from the at least one inlet to the at least one outlet. A compression device is arranged in the container and compresses the granular ion-exchange material. The compression device has at least one elastic porous compression element that is permeable for the cooling fluid and is arranged in the flow path between the inlet and the outlet so that the cooling fluid passes through the at least one compression element. The compression element is an open-cell foam material element.

Abstract: A filter has a filter cup, a filter element arranged in the filter cup, and a filter head. Filter cup and filter head are connected by a releasable bayonet-type connection with interacting locking parts connected to filter cup and filter head. A locking nose on the first locking part and a recess on the second locking part interact. The recess has an insertion/removal region for joining and separating locking nose and recess and also a locking region for hooking the locking nose. A spring between filter cup and filter head generates pretension on the locking nose in the recess. The recess has a locking shoulder with a shoulder tip between locking region and insertion/removal region. The locking nose has a locking tip. When locking tip and shoulder tip contact each other, the locking nose is forced by the spring into the locking region or into the insertion/removal region.

Abstract: A filter (18) is fastened by means of a releasable detent connection (20) in a fastening housing part (14). One detent component (32) is connected to the filter element (18) and one detent component (36) is connected to the fastening housing part (14). At least one detent means (32) of one of the detent components engages in a bayonet-like manner in a cut-out (38) in the other detent component (36). One switching component (60) of a switching device (58) is connected to the filter element (18) and one switching component (62) is connected to the fastening housing part (14). One of the switching components (60) includes at least one switching lug (76) extending radially to a rotational/plug-in axis (30) of the filter (10), and one of the switching components (62) includes a switching slot (78) for guiding the switching lug (76).

Abstract: A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.

Abstract: A cyclone separator (100; 100?) including a first cyclone component (10; 10?) having at least one substantially cylindrical cell pipe (12) including a guide device (14), a particle outlet (30) for separated particles, and a second cyclone component (20; 20?) including at least one immersion pipe (22). The immersion pipe (22) is received in the cell pipe (12), at the outflow side end and is connected at least partially to the outflow side end of the cell pipe (12) and includes a central outlet (24) for the purified gas stream.