A dust filtering and collection system for filtering dust and other particles from an air stream generally being used for conveying granular material into or from a bulk tank, with the filtering system designed to incorporate structure, such as a specially designed grommet, for holding a porous filter tube for filtering out such dust particles, with a grommet having structure to provide for its interlocking and engagement with and through an aperture in a transverse plate within the system. The grommet has an upper flange, that engages the upper surface of the transverse plate, and has an inner flange for engagement with the upper edge of the filter tube, while the bottom of the grommet has resilient fingers and associated detents for engaging the bottom of the transverse plate, to furnish an interlocking of the grommet, with its supported filter tube, onto and through the transverse plate.

A dust filtering and collection system for filtering dust and other particles from an air stream generally being used for conveying granular material into or from a bulk tank, with the filtering system designed to incorporate structure, such as a specially designed grommet, for holding a porous filter tube for filtering out such dust particles, with a grommet having structure to provide for its interlocking and engagement with and through an aperture in a transverse plate within the system. The grommet has an upper flange, that engages the upper surface of the transverse plate, and has an inner flange for engagement with the upper edge of the filter tube, while the bottom of the grommet has resilient fingers and associated detents for engaging the bottom of the transverse plate, to furnish an interlocking of the grommet, with its supported filter tube, onto and through the transverse plate.

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.

An adjustable filter track system for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter track having a guideway and a bracket that form a recess configured to receive a filter and an adjustable angle bracket including a first panel and a second panel rotatably coupled to the guideway, where the bracket and the adjustable angle bracket are configured to hold the filter in place within the recess, and where the adjustable angle bracket is configured to rotate about an axis within the recess between a first configuration and a second configuration to accommodate different thicknesses of the filter.

An adjustable filter track system for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter track having a guideway and a bracket that form a recess configured to receive a filter and an adjustable angle bracket including a first panel and a second panel rotatably coupled to the guideway, where the bracket and the adjustable angle bracket are configured to hold the filter in place within the recess, and where the adjustable angle bracket is configured to rotate about an axis within the recess between a first configuration and a second configuration to accommodate different thicknesses of the filter.

A mask machine protection frame device with function of air filtering includes an outer frame being a hollow frame for receiving a mask machine therein; an outlook of the outer frame; and at least one air filter installed at an upper side of the outer frame for sucking outer air into the outer frame; the air filter including at least one fan and at least one filter device; the fan serving to suck outer air into the filter device for air filtering so as to flow out clean air; and the clean air then flowing to the mask machine. The outer frame can be installed with at least one fire proof plate and a surface of the fire proof plate is coated with an anti-electric static layer.

There is provided a filter assembly arranged to be mounted over the air inlet of a fan assembly, the filter assembly comprising a filter frame arranged to support one or more filter media. The filter frame is provided with a first engagement member on a first edge of the filter frame and a second engagement member on a second edge of the filter frame, the first edge being opposite to the second edge. The first engagement member and the second engagement member are each configured to be engaged by a respective retention assembly when mounted on the fan assembly.

The present invention relates to a housing (1) for a heating, air-conditioning and/or ventilation device for a motor vehicle, configured to receive an air filter (3), said air filter (3) comprising a first filtering medium (30) which is delimited by at least two primary frame strips (300) and a second filtering medium (31) which is delimited by at least two secondary frame strips (310), according to which said housing (1) comprises at least one maintenance device (100) which is configured to retain one of said primary frame strips (300) when said first filtering medium (10) is mounted in said housing (1).

An air cleaner according to an embodiment of the present disclosure includes: a main body including a main fan configured to generate air flow, a discharge part through which air passing through the main fan is discharged, a wireless power transmitter disposed on one side, and a power supply connected to the wireless power transmitter; and a flow switching device movably provided on the one side of the main body, wherein the flow switching device includes: a first guide tool configured to guide a first direction rotation of the flow switching device; a second guide tool configured to guide a second direction rotation of the flow switching device; and a wireless power receiver configured to supply power to the first guide tool and the second guide tool.

In order to provide a filter system for separating off contaminants from a stream of untreated gas that contains contaminants that is of simple construction and is operable efficiently, it is proposed that the filter system should include the following: a base construction through which the stream of untreated gas is guidable and which includes at least one filter module receptacle for receiving at least one filter module, and at least one filter module which is selectively arrangeable on and/or in the at least one filter module receptacle and/or removable therefrom, wherein the at least one filter module includes a plurality of filter element receptacles for receiving a plurality of mutually independent filter elements.