Filter assemblies are described. In particular, a filter securement assembly for receiving and retaining a filter media in an exhaust hood is disclosed, the filter securement assembly being releasably securable to the exhaust hood, includes a filter frame, a cover and a face forming a portion of the cover, the face defining a plurality of apertures therethrough, the apertures forming at least 50% of a face surface area.

A frame for a foldable and disposable air filter media is disclosed. The frame has a frame base and a frame cover having a size to overlap the air filter media. The frame cover is attached to the frame base by hinges allowing movement of the frame cover between an open position and a closed latched position. The closed frame holds the air filter media between the frame base and frame cover when in the closed position. The frame base includes an air flow monitoring system with an air pressure differential sensor to determine when the filter needs to be replaced. The frame also has capability to hold additional sensors for monitoring environmental conditions. A processor and memory enable collection and storage of sensed data. A communication module on the frame communicates air filter media change requirement to external devices including hand-held devices or a cloud server.

An air cleaner assembly is disclosed. In one aspect, the air cleaner assembly includes a housing defining an inlet and an outlet, and including an access opening between the inlet and outlet. The air cleaner also includes a filter cartridge received within the housing and covering the access opening. The air cleaner also includes a lock mechanism. The lock mechanism is movable between an unlocked position in which the filter cartridge can be installed and removed from the housing and a locked position in which the filter cartridge is secured within the housing. The filter cartridge and lock mechanism include interacting features allowing the lock mechanism to be moved from the unlocked position to the locked position only when the filter cartridge is installed within the housing.

The present invention provides a handheld smoke filter, the handheld smoke filter includes a housing, wherein one end of the housing is fixedly connected to a smoke spray inlet, the other end of the housing is fixedly connected to a bottom cover, the housing is provided inside with a filter element shell for filtering smoke, the filter element shell is provided with a first sponge layer, an activated carbon filter layer, a second sponge layer and an HEPA filter sequentially disposed from a filter element intake hole to a filter element exhaust hole. The handheld smoke filter of the present invention can use sponge, activated carbon and HEPA for multiple filtrations, so as to collect smoke sprayed from the mouth of a user more effectively, with better filtration effect and better air permeability.

A method of installing a filter assembly in a return duct of a furnace, where the method includes selecting a location on the return duct to install the filter assembly, cutting a slot into a front surface of the return duct, mounting at least one rail to an interior side surface of the return duct, where the at least one rail defines a receiving structure, inserting a header frame into the receiving structure such that the header frame is slidable between an open position and closed position with respect to the return duct and placing at least one pocket filter into engagement with the header frame.

The present invention discloses a purifier, including a purifier body and a filter unit arranged in a purification chamber of the purifier body. A side wall of the purification chamber has an opening to which a cover is mounted. The filter unit is an integrated filter and disinfection body, which includes a filter body and a disinfection body which are detachable from each other. The filter unit is mounted inside the purification chamber and electrically connected to the purifier body to supply power to the disinfection body. According to the arrangement of the filter and disinfection body in the present invention, the disinfection body and the filter body are collectively designed into one integrated structure, so that the disinfection body and the filter body can be mounted inside or removed from the purifier body as a whole, which is convenient and fast. In addition, the disinfection body and the filter body in the present invention are assembled in a detachable manner, so that the disinfection body and the filter body can be replaced, repaired and maintained separately, and the long-term use costs of users are greatly reduced, thereby solving the technical problem existing in the related art.

An air purifier having a side-access or horizontally-removable air filter assembly may include a housing, a base plate, a filter plate, a filter, and an air blowing unit. In some configurations the air purifier also includes a UV-light source and a removable covering or panel. Once the removable cover is separated from the housing, the filter plate with the filter assembly may be slid horizontally into and out of the housing. Once the filter plate, filter, and UV-light source are removed from the housing, the filter may be replaced, cleaned, and/or inspected.

An air cleaner assembly with a restriction indicator (14) includes a housing (12) having an exterior surface around an interior volume. The housing includes a bore (42) extending through a portion of the exterior surface of the housing surrounded by a bore wall (38) protruding from the portion of the exterior surface. A receptacle wall of the housing is disposed around the bore wall and is radially spaced from the bore wall to form a channel (44) between the bore wall and the receptacle wall. A restriction indicator (14) measures a restriction in the interior volume and displays an indication of the restriction. The restriction indicator includes a stem (46) that is at least partially insertable into the bore that engages an inner surface of the bore wall. One or more tabs (52) of the restriction indicator are at least partially insertable in the channel and removably couple to the receptacle wall.

A filter for compressed air systems is provided. The filter includes a filter housing with a filter therein between an air inlet and an air outlet. Compressed air flowing between the air inlet and the air outlet passes through the filter housing and the filter element. A base is removably fastened to the filter housing which may be separated from the filter housing to allow the filter element to be removed and replaced.

A filter housing has a first housing part with a first rim section and a second housing part with a second rim section. The housing parts can be joined and separated from each other in axial mounting direction and define a housing interior for a filter element provided with a circumferentially extending sealing element. The first and second rim sections form a receiving area in which the sealing element is seal-tightly clamped radially between the first and second rim sections when the housing parts are joined in the mounted state. A snap connecting device axially braces the first and second housing parts relative to each other. The snap connecting device is formed integrally on the first and second housing parts such that a clamping force applied by the first and second rim sections on the sealing element in radial direction is decoupled from the snap connecting device.