A filter unit to be utilized in a continuous flow engine wherein the filter unit is adapted to filter a fluid stream, preferably a gas stream, wherein the filter unit provides a strainer part providing two strainer surfaces, wherein at least one of the two strainer surfaces is not planar. A kit contains a filter unit of this type and a counterpart adapted receive the filter unit, wherein the counterpart is adapted to be used as part of the continuous flow engine. A method utilizes such filter unit or kit.

A method and apparatus for an inline air purification system is described herein. An example apparatus includes a housing, a high-velocity air flow guide, a filter assembly, and a fan. The high-velocity air flow guide includes a first portion and a second portion. The first portion is configured to form a passage within the housing, and the second portion is configured to divert and accelerate air flow of the ambient air from the passage to a chamber of the housing. The filter assembly includes one or more filtering elements configured to receive the ambient air from the chamber. The fan is configured to draw the ambient air from the chamber through the filter assembly and to generate processed air from the ambient air. The housing is located in an HVAC duct, and occupies only part of the cross-sectional area of the duct. The remaining area of the duct accommodates bypass air flow to a primary fan in the HVAC system.

The disclosure relates to an air filtering apparatus (1) configured to provide intake air to an engine, said apparatus comprising: a filter chamber (2) comprising an air inlet opening (3), and an air outlet opening (4); a weather protection hood (5) arranged on the air inlet side of the filter chamber, said weather protection hood having an air intake opening (6) facing downward and an outlet opening (7) being connected to the air inlet opening (3) of the filter chamber; a pulse filter arrangement (8) comprising one or more pulse filters (9); a static filter arrangement (10) located at the air outlet opening (4); where the pulse filter arrangement (8) is arranged inside the weather protection hood (5) and in that a maintenance space (11) is provided in the filter chamber (2) on a downstream side of the pulse filter arrangement (8), through which the filters (9) of the pulse filter arrangement can be replaced.

The disclosure relates to an air filtering apparatus (1) configured to provide intake air to an engine, said apparatus comprising: a filter chamber (2) comprising an air inlet opening (3), and an air outlet opening (4); a weather protection hood (5) arranged on the air inlet side of the filter chamber, said weather protection hood having an air intake opening (6) facing downward and an outlet opening (7) being connected to the air inlet opening (3) of the filter chamber; a pulse filter arrangement (8) comprising one or more pulse filters (9); a static filter arrangement (10) located at the air outlet opening (4); where the pulse filter arrangement (8) is arranged inside the weather protection hood (5) and in that a maintenance space (11) is provided in the filter chamber (2) on a downstream side of the pulse filter arrangement (8), through which the filters (9) of the pulse filter arrangement can be replaced.

In a method for operating a surface treatment installation, overspray produced in a coating booth is taken up by an air stream and carried to one or more one-way filter modules, in which overspray is separated. Once a limit loading with overspray is reached, a one-way filter module is exchanged for an empty one-way filter module. Depending on the nature and characteristics of the overspray, the one or more one-way filter module(s) may be chosen from a set of different one-way filter modules. A set of filter modules for use in a surface treatment installation is provided having various filter modules formed as exchangeable one-way structural units with a module housing and a filter unit. The module housings of the various filter modules have the same-connection module inlets and the same-connection module outlets and at least the filter units of two different filter modules are formed differently.

A filter assembly including a plurality of filter modules, wherein each filter module in the plurality of filter modules includes a frame, a filtration element coupled within the frame, and at least one mating feature. The at least one mating feature of each filter module is configured for selective engagement with the at least one mating feature of another filter module such that the plurality of filter modules are coupled together in a serial arrangement.

A method and apparatus for an inline air purification system including a housing, a high-velocity air flow guide, a filter assembly, and a fan.

A method and apparatus for an inline air purification system including a housing, a high-velocity air flow guide, a filter assembly, and a fan.

In some embodiments, an indoor air cleaning apparatus and a method for removing at least a portion of at least one type of gas from an indoor airflow are disclosed. The apparatus may comprise a cabinet; at least one sorbent bank comprising at least one cartridge; a fan assembly comprising at least one housing including at least one housing inlet and at least one housing outlet, at least one motor and at least one impeller; and a heating element configured to operate in at least one of two modes: an active mode and an inactive mode; and a controller configured to operate in at least two modes: an adsorption mode and a regeneration mode.

In some embodiments, an indoor air cleaning apparatus and a method for removing at least a portion of at least one type of gas from an indoor airflow are disclosed. The apparatus may comprise a cabinet; at least one sorbent bank comprising at least one cartridge; a fan assembly comprising at least one housing including at least one housing inlet and at least one housing outlet, at least one motor and at least one impeller; and a heating element configured to operate in at least one of two modes: an active mode and an inactive mode; and a controller configured to operate in at least two modes: an adsorption mode and a regeneration mode.