In an example, an air filter system includes an air filter and a thermally conductive particulate sensor (TCPS). The TCPS includes a temperature sensor to measure a first temperature of the TCPS at a first time, measure a second temperature of the TCPS at a second time, and provide the measured first temperature and the measured second temperature to a controller. The controller to determine an actual rate of temperature change based on the measured first temperature and the measured second temperature, compare the actual rate of temperature change to a target rate of temperature change, and provide a notification when a difference between the actual rate of temperature change and the target rate of temperature change is greater than an accumulation threshold indicative of a threshold amount of particulate accumulation on the TCPS.

A frameless EMC air filter for a conductive enclosure includes a body comprising a conductive layer disposed between two filtering layers, the air filtering layers forming a periphery of the body. The frameless EMC air filter further includes one or more bare edge portions that extend outwardly past the periphery of the body. Each bare edge portion is formed by an extension of the conductive layer capable of providing direct electrical contact with the conductive enclosure.

A pressure equalising device for a housing, including an inside, an outside, and a lattice-like cage having a gas passage opening. The gas passage opening connects the inside and the outside in a differential pressure-dependent and flow-conducting manner. The gas passage opening is covered by a gas-permeable membrane which includes at least one nonwoven layer. The nonwoven layer includes fibers which are substantially completely sheathed by a sheath of an elastomer.

A filter housing can support filter media for a fan arrangement. The filter housing can include a filter body with a first opening at a first end and a second opening at a second end. A bell portion can be disposed between the air inlet opening and the air outlet opening and can define a cavity within the housing body. An air-permeable filter support can extend into the cavity to support the filter media within the cavity, with the filter media spaced apart from at least one of the first and second openings.

An arc flash management system including a cabinet having multiple walls surrounding electrical equipment capable of producing arc flash, at least one aperture within one of the walls, and an arc exhaust attachment emanating from at least one of the apertures for directing possible arc flash away from the cabinet.

A perception and planning system includes a system frame and one or more cooling fans mounted on a first side of the system frame to generate an airflow flowing outwardly to remove at least a portion of the heat generated by the processors. The system further includes an air filtering module mounted on a second side of the system frame to filter the air flow flowing inwardly to remove durst or contaminated material from the airflow. The air filtering module includes an air filter, a mounting plate, and a cover plate. The mounting plate can be mounted on the second side of the system frame to receive the air filter. The mounting plate includes one or more magnets. The cover plate can be attached to the mounting plate by a magnetic force generated from the magnets to keep the air filter between the mounting plate and the cover plate.

The technology disclosed herein relates to filter assemblies and methods of making filter assemblies. One filter assembly has a first sheet of filter media having a first perimeter region and a second sheet of filter media having a second perimeter region. The first perimeter region and the second perimeter region are bonded in a rim region. A plurality of adsorbent beads are disposed between the first sheet of filter media and the second sheet of filter media, and a substantial portion of the plurality of adsorbent beads are unbonded. Other embodiments are also described.

An intelligent filter construction for household appliances, in particular for drying/washing-drying machines, for separating solid particles from liquid or gaseous fluids, comprises a synthetic monofilament precision fabric material, of a weft and warp type, with which is integrally associated a capacitive sensor adapted to measure in real time values of a moisture in an air flow passing through the fabric material thereby optimizing the household appliance operating cycle.

Provided is a filter frame, including: a rectangular base part including plural engaging holes formed each side thereof; an extension portion extending outward from each of the sides and including plural engagement projections corresponding to the plural engaging holes; a termination portion formed at an end of the extension portion and including a bent portion; and a hinge coupling each extension portion with the rectangular base part, wherein the rectangular base part, the extension portions, the termination portions, and the hinges are formed integrally, wherein the rectangular base part allow a rectangular dust proof filter to be placed thereon, wherein the extension portions are bent at right angles to the rectangular base part, and then the extension portions are engaged with the rectangular base part so as to clamp the dust proof filter, and wherein the termination portions are elastically deformed and fixed to inner walls of a duct.

Disclosed is a gas purge filter used in a housing container provided with a container main body and a lid body. The gas purge filter has a filter housing having a ventilation space where gas outside the housing container and gas of a housing space can be ventilated, and a pad formed outside the housing space of the filter housing to cover an outer peripheral face of a nozzle portion that forms a part of the ventilation space. The pad is formed of an elastic body.