An air cleaning module includes a filter, a fan, a light source unit, a housing and a guide structure. The fan is configured to provide a suction direction and a blowing direction of a fluid which are substantially aligned. The light source unit is arranged to be adjacent to the filter to emit a light toward the filter. The light having a property that sterilizes a contaminant source in a fluid. The housing includes a fluid passage space. The guide structure is arranged between the fan and the filter and configured to guide a fluid to move along a fluid passage path set by the guide structure. The filter and the light source unit are arranged in the fluid passage space such that the light source unit sterilizes a fluid as a fluid flows toward the light source unit.

An air cleaning module includes a filter, a fan, a light source unit, a housing and a guide structure. The fan is configured to provide a suction direction and a blowing direction of a fluid which are substantially aligned. The light source unit is arranged to be adjacent to the filter to emit a light toward the filter. The light having a property that sterilizes a contaminant source in a fluid. The housing includes a fluid passage space. The guide structure is arranged between the fan and the filter and configured to guide a fluid to move along a fluid passage path set by the guide structure. The filter and the light source unit are arranged in the fluid passage space such that the light source unit sterilizes a fluid as a fluid flows toward the light source unit.

A cleaning method for sectional cleaning of a filter having several filter sections, the filter sections being cleaned within a cleaning cycle in cleaning processes separated in time from one another, the cleaning method having at least two cleaning cycles and both a time interval between the cleaning processes within the respective cleaning cycle and also a time interval between the end of one of the cleaning cycles and the start of a following one of the cleaning cycles being changed. Moreover, a connecting device for connecting a filter to a cleaning device having a side wall, which borders an internal cross section, which increases along a longitudinal axis of the connecting device and has lateral openings with assigned major axes and a method of connecting the connecting device to a filter device.

A cleaning method for sectional cleaning of a filter having several filter sections, the filter sections being cleaned within a cleaning cycle in cleaning processes separated in time from one another, the cleaning method having at least two cleaning cycles and both a time interval between the cleaning processes within the respective cleaning cycle and also a time interval between the end of one of the cleaning cycles and the start of a following one of the cleaning cycles being changed. Moreover, a connecting device for connecting a filter to a cleaning device having a side wall, which borders an internal cross section, which increases along a longitudinal axis of the connecting device and has lateral openings with assigned major axes and a method of connecting the connecting device to a filter device.

An attachable air filter medium for attachment to a conventional circulation fan is disclosed comprising a netting fabric filter medium being adapted to fit over the rear half of the conventional circulation fan's housing for filtering dust particles in air coming into the circulation fan preventing dust buildup on the fan blade thus eliminate the need to periodically clean the fan.

A filter cleaner and an air-processing apparatus including a filter cleaner are provided. The filter cleaner may include a housing that forms an external appearance and having a suction hole formed in a first side thereof and a discharge hole formed in a second side thereof, a moving gear rotatably disposed in the housing and configured to move the housing, a gear motor configured to rotate the moving gear, a dust container disposed so as to be introduced into or withdrawn out of the housing and configured to store foreign substances introduced thereinto through the suction hole and to accommodate an agitator rotatably disposed therein, an agitator gear disposed inside of the housing to rotate the agitator, an agitator motor disposed inside of the housing to operate the agitator gear, and a suctioner disposed inside of the housing to induce air to flow into the dust container through the suction hole.

A filter cleaner and an air-processing apparatus including a filter cleaner are provided. The filter cleaner may include a housing that forms an external appearance and having a suction hole formed in a first side thereof and a discharge hole formed in a second side thereof, a moving gear rotatably disposed in the housing and configured to move the housing, a gear motor configured to rotate the moving gear, a dust container disposed so as to be introduced into or withdrawn out of the housing and configured to store foreign substances introduced thereinto through the suction hole and to accommodate an agitator rotatably disposed therein, an agitator gear disposed inside of the housing to rotate the agitator, an agitator motor disposed inside of the housing to operate the agitator gear, and a suctioner disposed inside of the housing to induce air to flow into the dust container through the suction hole.

A self-cleaning magnetic filter for removing ferrous contaminates from a natural gas process stream including a housing through which the process stream follows for removing ferrous contaminates in the process stream by magnetic attraction with a plurality of magnetic bars that are removably disposed in a plurality of non-magnetic sleeves disposed within the housing. A recirculating washing solution is used to flush contaminates that adhere to the exterior surfaces of the non-magnetic sleeves and from the housing. A bag filter is used to remove contaminates from the washing solution to allow recycling the washing solution.

A self-cleaning magnetic filter for removing ferrous contaminates from a natural gas process stream including a housing through which the process stream follows for removing ferrous contaminates in the process stream by magnetic attraction with a plurality of magnetic bars that are removably disposed in a plurality of non-magnetic sleeves disposed within the housing. A recirculating washing solution is used to flush contaminates that adhere to the exterior surfaces of the non-magnetic sleeves and from the housing. A bag filter is used to remove contaminates from the washing solution to allow recycling the washing solution.

A modular high-efficiency particulate air (HEPA) filtration system includes first and second modular filtration units and a blower unit. The blower unit draws air from an isolated indoor space of a facility via a ventilation input to maintain negative air pressure within the isolated indoor space. The first modular filtration unit and the second modular filtration unit are connected in parallel with the ventilation input and the blower unit. The first modular filtration unit is disposed between the blower unit and the ventilation input and at least a portion of air drawn through the ventilation input by the blower unit passes through the first modular filtration unit, and the second modular filtration unit is disposed between the blower unit and the ventilation input and at least a portion of the air drawn through the ventilation input by the blower unit passes through the second modular filtration unit.