An oil mist separator (10) for a crankcase ventilation (11) such as in an internal combustion engine (13) for separating oil particles from a gaseous fluid, in particular blow-by gas is disclosed. The oil mist separator (10) has at least one nozzle plate (24). The at least one nozzle plate (24) is arranged in a flow way of the gaseous fluid. The nozzle plate (24) has at least one aperture (26; 126) for the gaseous fluid. The oil mist separator (10) further has at least one impact surface (32; 132). The at least one impact surface (32; 132) is arranged downstream of the nozzle plate (24) relating to the flow of the gaseous fluid. The at least one impact surface (32; 132) can be moved away from the at least one nozzle plate (24) in an opening direction (36) against a pretension force by influence and dependent on a flow of the gaseous fluid through the at least one aperture (26; 126). At least one aperture is formed as a nozzle aperture (26) and at least one control protrusion (42; 142) for controlling the flow cross-section of at least one aperture (26; 126) is attached to at least one impact surface (32).

A flow guide mesh has a water inlet side and a water outlet side opposite to each other, wherein a first water isolating material is provided on the water inlet side of the flow guide mesh to seal a part of the water inlet side, and an effective water inlet width is defined on the water inlet side, a second water isolating material is provided on the water outlet side of the flow guide mesh to seal a part of the water outlet side, and an effective water outlet width is defined on the water outlet side. In addition, the flow guide mesh has a comb-like structure comprising at least one comb tooth within the effective water outlet width of the water outlet side. Also disclosed are a membrane element and a filter assembly.

A flow guide mesh has a water inlet side and a water outlet side opposite to each other, wherein a first water isolating material is provided on the water inlet side of the flow guide mesh to seal a part of the water inlet side, and an effective water inlet width is defined on the water inlet side, a second water isolating material is provided on the water outlet side of the flow guide mesh to seal a part of the water outlet side, and an effective water outlet width is defined on the water outlet side. In addition, the flow guide mesh has a comb-like structure comprising at least one comb tooth within the effective water outlet width of the water outlet side. Also disclosed are a membrane element and a filter assembly.

A filter assembly for an enclosure, particularly for an ostomy bag, is described having an enclosure side, a first layer which is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web. The enclosure side of the filter assembly includes an adhesive zone in which adhesive is present having an outer adhesive perimeter and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area. A method of assembly is also described.

A filter assembly for an enclosure, particularly for an ostomy bag, is described having an enclosure side, a first layer which is gas permeable, and an adsorbent layer comprising adsorbent particles dispersed in a fine fiber web. The enclosure side of the filter assembly includes an adhesive zone in which adhesive is present having an outer adhesive perimeter and a weld area surrounding at least a portion of the adhesive zone, where the filter assembly is heat-sealable to the enclosure at the weld area. A method of assembly is also described.

Pleated filtration media, filtration media packs, and filtration elements containing projections are disclosed. The pleated filtration media includes projections on at least one surface, the projections configured to engage adjacent media sheets so as to reduce masking of the media.

Pleated filtration media, filtration media packs, and filtration elements containing projections are disclosed. The pleated filtration media includes projections on at least one surface, the projections configured to engage adjacent media sheets so as to reduce masking of the media.

Coated crossflow filter membranes, crossflow filters comprising the coated filter membranes and crossflow filtration systems for separating material such as biological material sensitive to temperature, dissolved gases, and mechanical damage are disclosed.

An apparatus for filtering a liquid includes a filter housing, at least one filter element arranged in the filter housing, and at least one sensor unit. The at least one sensor unit includes at least one sensor and a radio module. The at least one sensor is configured to detect an operating parameter representative of a state of at least the at least one filter element or the apparatus.

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region are bonded in a rim region. A plurality of adsorbent beads are disposed between the first sheet of filter media and the second sheet of filter media, and a substantial portion of the plurality of adsorbent beads are unbonded. Other embodiments are also described.