The present invention provides an air purifier, and relates to the technical field of air purifiers. The air purifier comprises an air filter box with openings at a top and a bottom, and further comprises a top plate covering the opening at the top of the air filter box and a bottom plate covering the opening at the bottom of the air filter box. The top plate and the bottom plate are both detachably connected with the air filter box; the top plate is provided with an air inlet and outlet; and the top plate is provided with an air extraction assembly located at the air inlet and outlet. By adopting the present invention, the air purifier is convenient to detach and install and is conveniently placed in a suitcase, etc. for carrying; using locations of the air purifier are flexible; and convenience is brought to use by a user.

An air cleaner arrangement or assembly is provided. The air cleaner arrangement includes a serviceable filter cartridge. The air cleaner assembly also includes an arrangement for positioning the filter cartridge into a preferred, sealing, orientation and for securing the filter cartridge in that location. Preferred serviceable filter cartridges are provided, as well as methods of assembly and use.

A filter mount removably attaches a filter to a box fan. The filter mount includes an elastic band, a fan coupler at a first end of the elastic band and a filter coupler at a second end of the elastic band. The fan coupler removably attaches to a grate of a grill of a fan. The filter coupler removably attaches to a filter.

Mating interfaces between an air intake housing and an air filter are disclosed. According to one embodiment, an air filter assembly having a mating interface for coupling an air intake housing to the air filter may include an air filter having an exterior, an interior, and outlet; and a mating interface coupled to a circumference of the outlet of the air filter. The mating interface may include an opening for receiving an end of an air tube that is in communication with the interior of the air filter; and a groove in a surface of the mating interface for press-fit receiving a first opening an air filter housing that surrounds the air filter.

Mating interfaces between an air intake housing and an air filter are disclosed. According to one embodiment, an air filter assembly having a mating interface for coupling an air intake housing to the air filter may include an air filter having an exterior, an interior, and outlet; and a mating interface coupled to a circumference of the outlet of the air filter. The mating interface may include an opening for receiving an end of an air tube that is in communication with the interior of the air filter; and a groove in a surface of the mating interface for press-fit receiving a first opening an air filter housing that surrounds the air filter.

A fan cover is an apparatus designed to prevent the buildup of dust and other particles on an air fan to improve the quality of air circulating through the air fan. To do so, the apparatus comprises a cover body, an elastic band, an insert-retaining pocket, and at least one scent-modifying insert. The cover body is designed to be attached onto the air inlet of the air fan to prevent the buildup of dust and other particles on the air fan. The elastic band facilitates the secure attachment of the cover body to the air fan so that the cover body stays attached to the air fan during operation of the air fan. The insert-retaining pocket is designed to receive the at least one scent-modifying insert without obstructing the airflow through the air fan. The at least one scent-modifying insert allows the diffusion of scents and/or fragrances into the airflow.

An air filtration apparatus includes an airflow powerhead assembly including a fan assembly and a vane assembly, a filter assembly, and a separator chamber housing inside of which the filter assembly is disposed. The separator chamber housing has a chamber inlet at a first axial side and a clean air outlet at a second axial side of the separator chamber housing opposite the first axial side. The filter assembly has a first axial end adjacent the chamber inlet and a second axial end adjacent the clean air outlet. The separator chamber housing includes at least one debris ejection slot extension configured to eject debris from an inner space of the separator chamber housing. The filter assembly includes a debris catch tray disposed at the second axial end, the debris catch tray having a debris ejection slot aligned with the at least one debris ejection slot extension.

An air filtration apparatus includes an airflow powerhead assembly including a fan assembly and a vane assembly, a filter assembly, and a separator chamber housing inside of which the filter assembly is disposed. The separator chamber housing has a chamber inlet at a first axial side and a clean air outlet at a second axial side of the separator chamber housing opposite the first axial side. The filter assembly has a first axial end adjacent the chamber inlet and a second axial end adjacent the clean air outlet. The separator chamber housing includes at least one debris ejection slot extension configured to eject debris from an inner space of the separator chamber housing. The filter assembly includes a debris catch tray disposed at the second axial end, the debris catch tray having a debris ejection slot aligned with the at least one debris ejection slot extension.

Mating interfaces between an air intake housing and an air filter are disclosed. According to one embodiment, an air filter assembly having a mating interface for coupling an air intake housing to the air filter may include an air filter having an exterior, an interior, and outlet; and a mating interface coupled to a circumference of the outlet of the air filter. The mating interface may include an opening for receiving an end of an air tube that is in communication with the interior of the air filter; and a groove in a surface of the mating interface for press-fit receiving a first opening an air filter housing that surrounds the air filter.

Aspects of the present disclosure are directed to air filtering components and related methods. As may be implemented in accordance with one or more embodiments, an apparatus includes a filter frame having an outer perimeter and configured to hold at least one filter within the outer perimeter, and a fastener configured to selectively couple and decouple the filter frame to an air passageway of an air movement component. The fastener is further configured with the filter frame to seal the outer perimeter around an opening in the air passageway via which air may flow by engaging with the air passageway and applying a force to the filter frame in a direction toward the air movement component, therein forming a sealed air flow channel through the filter frame and the at least one filter held within the outer perimeter.