Embodiments of the present application relate to the field of air purification devices, and disclose an air purification system and an Internet of things artificial intelligence control device, applied to both sides of an outdoor street and an associated space, comprising: a housing, an electrostatic dust removal air purifier, a controller, and a fan; The electrostatic dust removal air purifier, the controller and the fan are all disposed in the said housing; The front side of the housing is configured with an air inlet and an air outlet, herein the air inlet is for transmitting outdoor polluted air, and the air outlet is for transmitting purified air; The electrostatic dust removal air purifier and the fan are both connected to the said controller; The controller controls the fan to transmit outdoor air to the housing through the air inlet, and controls the electrostatic dust removal air purifier to purify the said outdoor air, after the air purification is completed, the purified air is discharged by the fan through the air outlet, so that the purification of the outdoor air is realized, to solve the technical problem due to the poor air circulation of the street canyons, the difficulty in diffusing pollutants, and the inability to reduce the pollution on both sides of the street.

The present disclosure provides a floor cleaner that includes a replaceable component, such as a filter. The floor cleaner has a detection mechanism comprising a magnet on the replaceable component and a Hall Effect sensor positioned to detect the permanent magnet when the replaceable component is correctly installed on the floor cleaner. Operation of one or more electrically-powered components of the floor cleaner is prevented when the permanent magnet is not detected by the Hall Effect sensor.

A filter assembly that includes a filter housing with a housing interlocking feature, a filter cover with a filter cover interlocking feature, and a filter element with a filter element interlocking feature is disclosed. The filter element is positionable within the filter housing, and the filter cover is attachable to a top portion of at least one of the filter element and the filter housing. The housing interlocking feature, the filter cover interlocking feature, and the filter element interlocking feature are interlockable with each other and extend in a nonplanar configuration along at least one side of the filter element when the filter housing, the filter cover, and the filter element are assembled together.

An apparatus and methods are provided for an air filter precleaner for an open air filter box. The air filter precleaner includes a filter medium between a base and a grating that are fastened over an opening into an interior of the air filter box. The filter medium comprises a sheet of filter material having a shape and a size suitable for being supported between the base and the grating. The base is a rigid member that supports the filter medium in a sheet configuration, such that the airstream passes through the filter medium before entering the air filter box. The grating is a rigid member comprising a screen portion surrounded by a frame that is configured to be fastened onto the air filter box. The screen portion comprises a shaped lattice that allows the airstream to pass through the filter medium before entering the air filter box.

An air purifier configured for near-field operation so that purified air is directed toward the head of a user, enabling the user to breathe a higher percentage of purified air versus unpurified ambient air. Additional functions are included to provide enhanced functionality in a use environment, such as on a desk.

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.

A filter assembly and related method are provided. The filter assembly includes one or more support grates for supporting a filter media of the filter assembly. The support grate and filter media are interposed between a pair of preformed end walls of a frame.

A filter device and a filter system are provided. A magnetic unit is disposed on at least one side of the filter device. The filter device includes a filter and a magnetic fixing device. The filter includes a first side wall. The magnetic fixing device includes a body, a clipping portion, and the magnetic unit. The body includes a top edge, a bottom edge, a first side face, and a second side face opposite to the first side face. The clipping portion includes a top flange extending from the top edge along the facing direction of the first side face by a first distance and a clip plate extending from an outer edge of the top flange toward the bottom edge by a second distance. The first side wall is clipped between the clip plate and the first side face. The magnetic unit is disposed on the second side face. The filter system includes a frame and the filter device.

Disclosed is a method of filtering air in a closed work environment that includes placing a primary air filter assembly in the closed work environment, where the primary air filter assembly includes a first air input and a first air output. The first air output is poised to emit once-filtered air outside the closed work environment. The method also includes placing a secondary air filter assembly in the closed work environment, where the secondary air filter assembly includes a second air input and a second air output. The method continues with repositioning the first air output to feed the second air input of the secondary air filter assembly, where the second air output is positioned to provide twice-filtered air to the closed work environment, and operating the primary air filter assembly and the secondary air filter assembly simultaneously.

An air conditioner unit includes a blower fan, an inlet grille upstream of the blower fan, and an outlet grille downstream of the blower fan. The air conditioner unit also includes an air filter positioned between the inlet grille and the outlet grille with a belt encircling and enclosing the air filter on four sides. The air conditioner unit further includes a motor operatively connected to the belt. The motor is configured to rotate the belt around the air filter and thereby clean the air filter.