Disclosed is an air purification filter: having a plurality of first protrusion parts arranged on a film part, which is made from a polymer synthetic resin, in the direction orthogonal to the flow direction of air, and a plurality of second protrusion parts arranged in the direction parallel to the flow direction of air, wherein the first and second protrusion parts are regularly formed; having a ventilation path formed by winding the film part; and formed such that the flow direction of the air is formed along the longitudinal direction of the film part, thereby reducing pressure loss and improving dust collection efficiency.

The invention relates to an interior air filter element (10) for a driver's cabin (302) of agricultural and work machines, particularly having sprinkling or spraying devices for pesticides or fertilizers including a filter body (12) having an adsorption filter region (50) and a fine filter region (80) particularly for separating aerosols, wherein the filter body 12 is designed as a winding body having at least one winding layer.

A filter assembly including an RFID tag, for use in monitoring fluid processing, as well as a system and a method for monitoring fluid processing, and a filter for use in the filter assembly, are disclosed.

An apparatus to purify fresh air contains at least three types of filters such as high efficient particle filter 5, chemical filter 6 and two stage electrostatic filters 2. The filters are secured to fresh air unit 1 that is secured to the wall 4 or window 11 of the building. Particularly, the present invention contains low noise fan 7 to reduce noises entering from outside. The particle filters and chemical filters are either in rolled form or in plate form with protrusions to have effective filtration. More particularly, the present invention relates to an apparatus for purifying freshly supplied air from outdoor environment and recirculates the indoor air by using new type easily installable and serviceable, filters that are environmentally friendly biodegradable filters.

The invention describes a filter element for an oil separator of a crankcase ventilation system in which a filter element is configured to separate oil from fluid and that has a covering surface extending parallel to a direction of flow, together with at least one cover element covering surface in at least some regions. An oil separator is taught having the filter element with at least one pressure control valve controlling crankcase pressure and has a valve closing body that operates in conjunction with a valve seat.

Articles and methods involving filter media are generally provided. In certain embodiments, the filter media includes at least a first layer, a second layer, and an adhesive resin positioned between the first layer and the second layer. In some embodiments, the first layer may be a pre-filter layer or a support layer. The second layer may, for example, comprise fibers formed by a solution spinning process and/or may comprise fine fibers. In some embodiments, the adhesive resin may be present in a relatively low amount and/or may have a low glass transition temperature. The filter media as a whole may have one or more advantageous properties, including one or more of a high stiffness, a high bond strength between the first layer and the second layer, a high gamma, and/or a low increase in air resistance after being subjected to an IPA vapor discharge. The filter media may be, for example, a HEPA filter and/or an ULPA filter.

A rotating crankcase ventilation filter element comprises a filter media comprising a plurality of filter media layers. A first end cap is positioned on a filter media first end. The first end cap comprises a first end cap main body, and a first plurality of indenting features positioned on the first end cap main body proximate the filter media first end. The first plurality of indenting features contact and indent corresponding segments of the filter media first end, causing the plurality of filter media layers to interlock at the corresponding segments. The interlocking prevents movement of the plurality of filter media layers relative to each other.

Rotating coalescer elements that maximize the radial-projected separation surface area in a given (rotating) cylindrical volume, where flow to be cleaned is passing axially upward or downward through a separating media of the rotating coalescer element. Various example package assemblies are provided with various types of rotating configurations including cylindrical coiled media packs, frustum coiled media packs, concentric cylinders, coiled metal or polymer films with and without perforations, and/or alternating layers of different materials. The described rotating coalescers may be driven by hydraulic turbine, electric motor, belt, gear or by mounting on rotating machine components, such as rotating engine shafts or connected components.

A filter for an oil catch apparatus is provided. The oil catch apparatus is capable of efficiently extracting oil from air flowing through the oil catch apparatus while being of compact size. The filter includes a cylindrically wound main filter unit, a first keep member for keeping one end of the main filter unit, and a second keep member for keeping the other end of the main filter unit. Air flowing into the main filter unit from an opening formed in the first keep member is cleared of impurities upon passing through the main filter unit, and exits out of the main filter unit.

The invention relates to an interior air filter element (10) for a driver's cabin (302) of agricultural and work machines, particularly having sprinkling or spraying devices for pesticides or fertilizers including a filter body (12) having an adsorption filter region (50) and a fine filter region (80) particularly for separating aerosols, wherein the filter body 12 is designed as a winding body having at least one winding layer.