A ventilation assembly and an air conditioning apparatus are provided. The ventilation assembly includes: a volute, a surface of the volute being provided with a mounting port; a filter assembly arranged in the mounting port or in a portion of the volute adjacent to the mounting port; and a sealing member arranged with the mounting port or with the portion of the volute adjacent to the mounting port, and configured to seal a gap between the filter assembly and the mounting port.

A method of oxidation-combusting an ingot grower comprises a) blocking between the filter housing and the exhaust pipe, b) forming the filter housing in a vacuum state, and c) injecting air into the filter housing through an injection pipe connected to a first side of the filter housing to combust the filter housing.

The technology disclosed herein relates to a vent assembly having a vent housing that defines a first airflow pathway, a second airflow pathway, and a third airflow pathway. The first airflow pathway is configured for fluid communication with an interior of an enclosure. The second airflow pathway is configured for fluid communication with the external environment, and the third airflow pathway extends between the first airflow pathway and the second airflow pathway. A membrane is coupled to the vent housing such that the second airflow pathway and the third airflow pathway are in communication through the membrane. Coalescing filter media is disposed within the vent housing such that the third airflow pathway and the first airflow pathway are in communication through the coalescing filter media. The vent assembly defines a spacing region between the coalescing media and the membrane.

A near ceiling mounted NBC filtration system [10] (FIG. 8) for collective protection shelters having an optimized modular structure. The main building blocks comprising: a filter unit [30], a blower [40], a manual air exchange backup unit [20] and a changeover valve [50]. The filter unit [30] is elongated in shape horizontally positioned along a top portion of a wall of the protected space. An inlet port [36] and outlet port [38] of the filter unit are located in proximity to each other near a first extremity of the filter unit. The blower [40] is driven by the electric motor [42] through a second speed increasing transmission enabling rotation of an impeller of the blower at speeds of above 3000 rpm. The blower [40] is positioned along the filter unit [30] near a second extremity thereof distal from the inlet port and outlet port; The changeover valve [50] comprises a tubular housing extending along the filter unit near the first extremity thereof, and an internal displaceable tubular valve member. The air exchange backup unit [20] comprising a plurality of lunged segments [22a, b, c] serially linked to each other, forming a foldable arm. A first end [24] of the air exchange backup unit is swiveably attached to the electric motor [42] and a second end [26] of the air exchange backup unit carries a detachable hand crank [28]. Manual rotation of the hand crank [28] rotates the electric motor [42] at substantially a rated speed of the electric motor. The second end [26] of the air exchange backup unit is firmly attachable to a wall of the protection shelter at a convenient position for manual cranking of the hand crank [28]. Each of the building blocks of the NBC filtration system may be replaced with a block of different capacity without effecting the other blocks.

The technology disclosed herein relates to a filter element having a first endcap, a second endcap, and filter media extending between the first endcap and the second endcap. The filter media defines a central opening and is coupled to the first endcap and the second endcap. A filter cover is coupled to the first endcap, and a breather filter is integral to the filter cover. The breather filter defines a first flow face and a second flow face. The filter element defines an airflow pathway from ambient environment through the first flow face and the second flow face.

An absorption system (100) and a process for absorption of gas from a medical apparatus (1) are provided. The absorption system includes a feed line (6), a discharge line (8), a filter unit (4) with a filter and at least one buffer storage device. The feed line establishes a fluid connection between the medical apparatus and the filter unit. The discharge line establishes a fluid connection between the filter unit and a fluid absorption unit (7). The gas is discharged from the medical apparatus and is passed through the feed line to the filter unit and from there through the discharge line to the fluid absorption unit. The filter filters at least one gas component out of the gas that is passed through the filter unit. The one or more buffer storage device absorbs and again discharges gas from time to time.

Various example embodiments relate to rotating coalescers. One embodiment includes a housing comprising a first housing section having a blowby gas inlet structured to receive crankcase blowby gases from a crankcase. The housing further comprises an oil outlet. The rotating coalescer includes an endcap and filter media. The filter media is arranged in a cylindrical shape and is coupled to and positioned between the first housing section and endcap. The filter media is structured to filter the crankcase blowby gases passing through the filter media by coalescing and separating oils and aerosols contained in the crankcase blowby gases. The rotating coalescer includes a hollow shaft extending through the housing and positioned radially inside of the filter media. The hollow shaft forms a blowby gas outlet structured to route filtered crankcase blowby gases out of the housing. The rotating coalescer further includes a drive mechanism operatively coupled to the hollow shaft.

The present disclosure relates to air filters. More particularly, it relates to air filters including pleated filter media that can be uniformly expanded and contracted. In some embodiments, the air filters are adjustably sized air filter systems. In some embodiments, the air filters can be used in a window opening.

The invention relates to an extractor fan apparatus for extracting cooking vapours downwards. The extractor fan apparatus comprises at least one fan for aspirating the cooking vapours, an inflow opening for the entry of the cooking vapours into the extractor fan apparatus, a filter seat which is arranged downstream of the at least one fan and on which at least one filter for filtering the cooking vapours can be arranged, and a filter replacement space which extends between the inflow opening and the at least one filter seat, the filter replacement space being configured for the reversible removal of the at least one filter from the filter seat through the inflow opening.

An air filtration system comprising an extrusion frame with an associated grille proximal to an occupied space, the frame dimension for insertion within a drop ceiling or solid ceiling associated with either a plenum air space or directly to a return air duct associated with an air handler and conditioned supply air, a pleated filter positioned adjacent the grille so as to filter air flowing into the plenum air space from the occupied space, the pleated filter dimensioned for entrapping particles in the 1 to 3 micron size, an ultraviolet lamp for emitting UV-C light positioned adjacent the pleated air filter so as to substantially irradiate airborne particles that may pass through the pleated filter and, in particular to irradiate particles associated with microorganisms, including viruses, an electrical switch and associated electrical ballast for controlling operation of the electrical lamp and so as to ensure that the lamp is not energized when the air filtration system is being installed or service; and means for securing the extruded frame of the air filtration system to a drop ceiling or solid ceiling or wall.