The present disclosure provides a floor cleaner that includes a replaceable component, such as a brushroll or 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.

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 application provides a wall-mounted air purifier, including a casing, a filter, and a fan mounted in the casing. The casing is provided with an air inlet and an air outlet. The air outlet is located at a position corresponding to an outlet of the fan, the filter is located between the air inlet and the fan, and the casing is provided with a socket for plugging and unplugging the filter, the filter can be detachably inserted into the casing through the socket. In the wall-mounted air purifier provided in this application, a socket is provided on the casing, so that the filter can be plugged into and unplugged from the socket, which is convenient for replacing.

A smart mask includes a face covering, an attachment member, one or more power source(s), an air circulation subsystem, an exhaust subsystem, and a controller. The face covering is configured to cover a face area of a wearer. The attachment member is configured to attach the face covering onto the face area of the wearer. The air circulation subsystem is powered by at least one of the one or more power source(s) and configured to filter outside air and draw the filtered outside air into the face area. The exhaust subsystem is placed below the air circulation subsystem and configured to purge exhaled air out of the face area. The controller is configured to control the air circulation subsystem.

The present disclosure provides a floor cleaner that includes a replaceable component, such as a brushroll or 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 filtration system interconnection structure having a filter manifold and a filter cartridge in magnetic communication with one another, such that a latching mechanism and latch blocking structure in the manifold secures the filter cartridge with a manifold sump when the filter cartridge is inserted within the manifold sump. The magnetic communication is formed between two complementary coded magnets capable of producing a magnetic shear force when in close proximity to one another. The magnetic shear force removes the latching blocking structure from interfering with the latch, allowing the latch to secure the filter cartridge. Movement of the latching blocking structure coded magnet relative to the filter cartridge coded magnet may be perpendicular or parallel with respect to each other. The filter magnet polarity transitions are aligned with the manifold magnet polarity transitions such that a shear force is generated between the magnets when the filter cartridge is inserted within the manifold sump housing, allowing for actuation of the latch blocking mechanism against a biasing force, and allowing the latch to move radially inwards against a separate biasing force.

A refillable air filter system, including: a reusable and collapsible frame; and a disposable filter that is releasably securable within the collapsible frame, wherein the filter is convertible between a storage/collapsed configuration and a functional/expanded configuration.

A system for improving an air-quality of a given space serviced by an exit register of an AC system including a base frame device that is configured to engage the exit register, a metal base frame section for engaging the base frame device with a perimeter of the exit register. A register cover device that is configured to magnetically engage the base frame device. The register cover device having a plurality of alternating open space portions, a plurality of air diverting fin segments, and a magnet holder implement. The magnet holder implement includes at least four magnet holders that are disposed on each end corner portion of the register cover device. At least four height adjustable magnets are disposed on each of the magnet holders, wherein each of the height adjustable magnets is configured to magnetically engage the register cover device with the base frame device.

An air cleaner includes a case, an air inlet, an air outlet, a grill covering the air inlet to filter airborne oil droplets, a fan to suction air through the air inlet and discharge air out of the air outlet, a roll filter provided between the grill and the fan to filter oil mist, and a filter roller to cut the roll filter. The roll filter includes a roller and a filter sheet wound around the roller, and the filter sheet may be unwound to extend behind the grill. When the filter sheet becomes dirty, the roll filter is further unwound so that a clean section is provided behind the grill, and the filter cutter may cut off the dirty section. During cutting, a clamp holds down the filter sheet. The case includes a slit through which the dirty section of the filter sheet passes for discarding.

A filter equipment includes a main body portion which has a hollow columnar structure with an open upper portion and a closed lower portion, and has a plurality of air inlets formed on a side surface to be spaced apart at regular intervals; a top cap which is detachably attached to an upper opening surface of the main body portion, and has a doughnut structure having a width corresponding to that of the filter portion in a plan view, a magnetic member attached to a lower surface of an air vent by a magnetically detachable structure being mounted on an upper surface of the top cap; a filter portion which has a hollow columnar structure corresponding to an inner peripheral surface of a main body portion, has a doughnut structure having a width corresponding to the lower surface of the top cap, has a structure that is in close contact with the lower surface of the top cap, purifies the air drawn in from the air inlet of the main body portion and then makes the purified airflow through a central opening portion of the top cap to the air vent; and a safety wire which is mounted inside the main body portion and extends by a predetermined length to be combined with one side of the top cap.