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.

An apparatus for safely enabling air filtering by temporarily joining a box fan to a replaceable air filter includes: (a) an air chamber frame with a rear portion that is configured to accommodate the replaceable air filter, (b) a frame stabilizing means that includes a front mounting platform which is configured to temporarily hold a box fan that is oriented to pull air through the filter, (c) a gasket that is configured to attach to the frame's front surface and minimize air flow around the gasket and into the frame, (d) a vent door located in the frame and configured to open to allow air to enter the frame's interior region when the filter is clogged, (e) an alarm mechanism attached to the vent door and configured to provide a signal when the door is been opened, and (f) an alarm device configured to receive the alarm mechanism's signal and provide an alarm that the air filter needs replacement.

An apparatus for safely enabling air filtering by temporarily joining a box fan to a replaceable air filter includes: (a) an air chamber frame with a rear portion that is configured to accommodate the replaceable air filter, (b) a frame stabilizing means that includes a front mounting platform which is configured to temporarily hold a box fan that is oriented to pull air through the filter, (c) a gasket that is configured to attach to the frame's front surface and minimize air flow around the gasket and into the frame, (d) a vent door located in the frame and configured to open to allow air to enter the frame's interior region when the filter is clogged, (e) an alarm mechanism attached to the vent door and configured to provide a signal when the door is been opened, and (f) an alarm device configured to receive the alarm mechanism's signal and provide an alarm that the air filter needs replacement.

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.

A filter module and an air purifier according to an aspect of the present disclosure include a supply roller and a recovery roller, a filter wound and installed on the supply roller and the recovery roller, so that it can be used without replacing and cleaning the filter module for a long period of time by allowing a section used in the filter to be recovered in the recovery roller, and also a section not used in the filter to be supplied from the supply roller.

Disclosed is a hair care applianceincluding: a housing having a first end and a second end and a fluid inlet which extends around the housing and is proximate the first end of the housing, a fluid outlet, a fluid flow path extending within the housing between the fluid inlet and the fluid outlet. The fluid inlet is provided with a filtering system including a removable portion and a fixed portion. The removable portion includes a first part and a second part which are separable and wherein the first part can only be secured to the housing when the second part is attached to the first part. The first part may be a sleeve capable of sliding over the second part. The second part may include a tubular portion and base portion extending radially out from the tubular portion at one end of the tubular portion.

A smart mask includes a face covering, an attachment member, one or more sensors, 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 one or more sensors comprises an air quality sensor configured to obtain first data associated with nearby air quality or a breathing pattern sensor configured to obtain second data associated with the wearer's breathing pattern. The controller is configured to process the first data associated with nearby air quality to identify a current air quality, or process the second data obtained by the breathing pattern. In response to determining that the current air quality is worse than a predetermined threshold, or identifying a particular breathing pattern, the controller is configured to generate a notification, notifying the wearer.

Disclosed is a thermal desorber assembly for desorbing substances collected on a high-volume sampling (HVS) filter. The assembly includes, among other elements, a filter holder for securing a HVS filter within the assembly, a desorber body, and an insulating enclosure. The design of the thermal desorber assembly is such that it can accommodate a variety of different types of HVS filter media. Also described herein is a system comprising the thermal desorber assembly and method of using the assembly.

The invention relates to a filter device (1) and a filter element (8) for cleaning an air stream that is charged with particles. The filter element (8) comprises a bag-type filter sock (17) consisting of an air-permeable, flexible material and a support body (21) in the interior of the bag-type filter sock (17). The first axial end of the bag-type filter sock (17) is closed and the second axial end has an air outlet that allows the cleaned air stream to exit the filter sock (17). An inner diameter or inner periphery of the filter sock (17) is greater in cross-sectional areas between the air outlet and its closed first end, in particular at least 10%, preferably between 20% and 40% greater than the greatest outer diameter or outer periphery of the support body (21), such that the filter sock (17) is dimensioned in relation to the support body (21) contained therein such that in the inactive state of the filter element (8) without air flow, said sock surrounds the support body (21) in a relatively loose manner and with lateral clearance. When air flows against the outer surface of the filter sock (17), folds or undulations are deliberately formed, at least in the jacket section of the filter sock (17), and the filter sock (17) thus lies comparatively closer to the support body (21).

A fastener for removably securing sheeting to a support surface, such as an HVAC system or other device. The fastener includes a base, a rare-earth magnet to removably couple the base to the support surface, the rare-earth magnet having an epoxy coating and being capable of securing the base to a pre-selected location on the support surface, and a locking member pivotably coupled to the base and adjustable between a selectable first position and a second position, and wherein the locking member remains in the selected position unless acted upon by a user.