A reconfigurable modular fluid filter is disclosed herein. The modular fluid filter includes a base filter housing having an opening formed in one or more walls thereof. Each opening is constructed to receive and couple with one of a filter element module, a secondary filter housing, an outlet port and a flow blocking cover. An unrestricted internal flowpath within the base filter housing is fluidly connected between each filter element module and the outlet port.

A filter element includes a construction of pleated filter media defining an interior volume. First and second opposite end caps are secured to opposite ends of the filter media. A support structure supports the filter media and is operably oriented in the interior volume. The support structure extends from the first opposing interior face to the second opposing interior face. The support structure is provided to extend less than a full extension between the first end cap and second end cap.

A filter module for filtering a fluid flow includes: a plurality of filter elements arranged parallel to one another in a fluid channel. A sensor is mounted on each filter element of the plurality of filter elements, each sensor being determining a loading state of a corresponding filter element. Each of the plurality of filter elements is a filter cartridge including plated filter medium. Each sensor is a flow sensor.

An air filter mounting plate having sealing side and a filter media retaining side, said mounting plate including an air passage opening and a gasket encircling the air passage opening provided on sealing side of the mounting plate, the gasket comprising a connection portion and double sealing lips (7a,7b) extending from the connection portion, and wherein the gasket is joined with the mounting plate by the connection portion being fixed on the sealing side of the mounting plate.

An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

An air purifying system may include a main air purifier that has a flat upper surface configured to support at least two cylindrical portable air purifiers. Each of the main and portable air purifiers may have a fan to suction air and a filter to filter suctioned air. The upper surface of the main air purifier may include a seating groove, an elastic member provided in the seating groove, and a seating plate resting on top of the elastic member. When a portable air purifier is seated on the seating groove, the elastic member may be compressed and the seating plate may be lowered such that the portable air purifier may be supported within an inner wall of the seating groove. When the portable air purifier is removed from the seating groove, the elastic member may expand and raise the seating plate back to an initial position.

A filter element includes a construction of pleated filter media defining an interior volume. First and second opposite end caps are secured to opposite ends of the filter media. A support structure supports the filter media and is operably oriented in the interior volume. The support structure extends from the first opposing interior face to the second opposing interior face. The support structure is provided to extend less than a full extension between the first end cap and second end cap.

An adjustable filter track system a filter track having a recess configured to receive a filter, and a frame having a first coupling feature configured to couple to the filter track in a first configuration and a second coupling feature configured to couple to the filter track in a second configuration, where the filter track and the frame are configured to hold the filter in place within the recess, and where the filter track is adjustable between the first configuration and the 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.

An adjustable filter track system for a heating, ventilation, and/or air conditioning (HVAC) system includes a filter track including a guideway and a bracket that form a recess configured to receive a first filter in a first configuration of the adjustable filter track system, a plurality of receptacles formed in the guideway and aligned along a length of the guideway, and a plurality of inserts, where, in a second configuration of the adjustable filter track system, each insert of the plurality of inserts is configured to be disposed in a corresponding receptacle of the plurality of receptacles and extend outwardly from the guideway to secure a second filter between the plurality of inserts and the bracket, where the second filter has a different thickness than the first filter.