The present application discloses an air purifier, including: a first body including a first housing; and a second body detachably connected to the first body and including a second housing, where buckles are arranged on the first housing, and snap-fit members are arranged on the second housing; the number of the buckles is greater than the number of the snap-fit members; and the first body in butt joint is enabled to rotate relative to the second body, so that the buckles can be hooked with the snap-fit members or separated from the snap-fit members. In the air purifier, a larger number of buckles are hooked with a smaller number of snap-fit members, so that disassembly and assembly operations can be simplified. Because the first body and the second body are detachable, the second body can be operated independently when the filter screen is detached.

A paint mist collection device includes: a housing configured such that an air flow containing paint mist discharged form a painting chamber flows into the housing; a collection filter disposed in the housing to collect the paint mist and configured to be taken out of the housing to be replaced; and a spacer member. The spacer member is held in a clearance between an in-flow opening portion of the collection filter and the inner surface of the housing.

A filter cartridge for a sterilizing cabinet includes a first gasket comprising a rigid or flexible edge portion and forming a frame defining a hollow center portion, a first filter comprising a porous material for maintaining a sterilized condition in the sterilizing cabinet and passing gaseous materials through the porous material, wherein the first filter is affixed to the first gasket, and a second filter comprising a porous material for maintaining a sterilized condition in the sterilizing cabinet and passing gaseous materials through the porous material, wherein the second filter is either affixed to the first filter or the first gasket opposite the first filter, and wherein the filter cartridge provides sufficient structural integrity to form a sealing interface with a confronting surface of the sterilizing cabinet.

A livestock facility air filter grid system comprising perimeter vertical and horizontal stiffener plates and interlocking horizontal and vertical field stiffener plates which provides an improved sealed assembly and eliminates the potential for direct air by-pass of the filters.

Systems and apparatuses include a generator set including a chassis, an engine mounted to the chassis, an inverter coupled to the engine, and a housing coupled to the chassis. The engine and inverter are contained within the chassis and the housing. An air cleaner is sized to fit within the housing and includes an air cleaner housing defining an inlet and an outlet, and a sealing surface positioned between the inlet and the outlet, and a cover pivotably coupled to the air cleaner housing and including a carrier sized to be received within the air cleaner housing. The cover includes an air filter receiving feature structured to support an air filter and position the air filter between the inlet and the outlet, and a carrier flange structured to seal a portion of the air filter between the sealing surface and the carrier flange when the cover is arranged in a closed position.

An air separation module includes a canister extending between a first end and an opposite second end, a separator fixed within the canister to separate a compressed air flow into an oxygen-enriched air flow fraction and an oxygen-depleted air flow fraction, and a one-piece cap. The one-piece cap is connected to the first end of the canister and has a filter module mount portion on a side of the one-piece cap opposite the separator to support a filter module with the air separation module. Nitrogen generation systems and methods of making air separation modules are also described.

An internal oil filter is installed at least partially inside a crankcase and/or an oil sump of a compressor. The internal oil filter can receive oil from an oil pressure regulator and filter the oil via filter media. The received oil radially penetrates through the filter media and flow directly into the oil sump from an outside surface of the filter media. This can eliminate the need of fluid lines connecting an outlet of an oil filter to the oil sump and any sealing mechanism therebetween.

A filter assembly for a breathing apparatus, such as a powered air purifying respirator. The filter assembly includes a frame for receiving and retaining a filter element, a cover connected to the frame and dimensioned to cover the aperture, a filter element, and an indicator for indicating when the filter element is retained in the filter frame and the cover is arranged across the aperture. A powered breathing apparatus including the filter assembly is also disclosed.

An air cleaner is provided that may include a main body having at least one cylindrical filter and at least one filter frame that forms a mounting space for the at least one filter, and a cylindrical case coupled to an outside of the main body, the cylindrical case having at least one suction inlet through which air is suctioned toward the at least one filter, so that air may be suctioned in 360-degree directions. If the cylindrical case is opened, the at least one filter may be extracted to the outside in a radial direction from the mounting space, thereby facilitating attachment/detachment of the at least one filter.

The present disclosure relates generally to air filtration devices. More specifically, but not exclusively, the present disclosure relates to an air filtration device comprised of a copper (or copper alloy) medium to inactivate airborne pathogens (e.g., viruses, bacteria, coronaviruses, COVID-19, etc.) and mitigate harmful exposure to said pathogens. The copper medium is a porous mesh (i.e., copper wool) that is positioned within or on a structure to provide support. The air filtration device may be positioned in an HVAC system such that an air stream flows through the copper medium to inactivate airborne pathogens, such as viruses, in the air stream. The air filtration device may be used in combination with, or in addition to, existing HVAC system conventional air filters (e.g., HEPA filters). The air filtration device includes a copper medium positioned on a face mask to inactivate airborne pathogens during respiratory processes.