An environmental control unit comprises a housing, a vacuum cleaner, a filtration unit, and a blower. The vacuum cleaner is positioned in the housing and is configured to receive a tool contaminant stream produced by at least one tool. The vacuum cleaner filters particulate matter from the tool contaminant stream, thereby producing a filtered air stream. The filtration unit is also positioned within the housing and comprises at least one filter. The blower is positioned within the housing downstream of the filtration unit. The blower is configured to create negative air pressure within the second compartment to draw an area contaminant stream from an exterior of the environmental control unit into the housing. A second blower may also be present. The blower draws the filtered air stream and the area contaminant stream through the at least one filter in the filtration unit to produce a filtered mixture stream.

The present invention relates to an air decontamination process system, which comprises one or more depollution towers (T), wherein each tower (T) comprises one or more air inlets, with or without air filtration (2), containing such an air decontamination zone, suitable devices for this purpose, an external tower (3) or air tank, where the air is already decontaminated and treated, and an outlet of decontaminated air at the top of the tower (4).

The air thus decontaminated may be released into the atmosphere, the process of the invention being able to give quantities of unpolluted air of the order of 400,000 m3 to 600,000 m.sup.3 per tower (T) per hour.

In this way, the present invention is part of the technical field of the new technologies for the treatment of environmental components, in this specific case, for the treatment and improvement of large volumes ambient air quality.

The present disclosure provides a face shield that includes a frame supported by a head of the wearer and a transparent visor removably coupled to the frame. When coupled to the frame, the visor extends around the face of the wearer such that the visor covers at least one of a mouth, a nose, and eyes of the wearer. The face shield further includes an ion generator coupled to the frame. The ion generator generates and emits negatively-charged ions in a region of ambient air surrounding the mouth or the nose of the wearer such that negatively-charged ions charge particulate matter suspended in the region of ambient air. The face shield includes a positively- or negatively charged or grounded trap that collects or deflects the negatively-charged ions and the particulate matter charged by the negatively-charged ions.

A filter mask, including a flexible filtering mask body having an outside surface and an opposite inside surface shaped to cover a nose and a mouth of a user, the mask body having a midbody portion extending between a right body side and a left body side. The filtering mask body is moveable between a first configuration having a first horizontal extent of the outside surface along the midbody portion and a second configuration in having a second horizontal extent of the outside surface along the midbody portion, the second extent being greater than the first extent. The filter mask includes a retainer system to hold the mask body to a user's head, the retainer system arranged to draw at only a single left-side location and only a single right-side location of the mask body when used reconfigure the filtering mask body from the first configuration to the second configuration.

Mist and vapor eliminating filters, devices, methods of filtering aircraft air using the devices, and systems including the devices, are disclosed.

Provided is a tower-type outdoor air cleaning apparatus that is disposed outside a facility that performs air cleaning, cleans outside air, and supplies the cleaned air, including: a tower body unit that is disposed away from the facility on one side of the facility, is provided in a tower type with a double-wall structure, in which fomentation is performed inward, air is filtered and suctioned, and is exhausted; an air supply unit that is provided above the tower body unit, in which air is supplied through an upper portion thereof and air flows in through a side portion at a plurality of locations of an outer circumference thereof and is mixed with the air supplied through the upper portion; an air ventilation filter unit that is disposed inside the air supply unit and the tower body unit, filters the mixed air supplied from the air supply unit to be supplied to the facility connected thereto, and exhausts the air circulated in the facility to the outside; a fomentation facility unit that is disposed inside the tower body unit and generates heat and electricity using solar energy for use in fomentation; and a control unit that is connected to the air ventilation filter unit and the fomentation facility unit to control the amount of air supplied by the air supply unit through the air ventilation filter unit, and controls production and transfer of heat and electricity using solar energy in the fomentation facility unit.

A personal ventilation device and method include a first duct segment and a second duct segment both held by a support structure that is configured to be mounted on a wearer of the personal ventilation device. The personal ventilation device also includes a first nozzle mounted to the first duct segment and a second nozzle mounted to the second duct segment. The first and second nozzles are configured to be disposed proximate to opposite sides of a face of the wearer and the first nozzle directs airflow from the first duct segment across the face of the wearer to form a control volume for a breathing space of the wearer.

An air treatment device having a flexible air hose, duct or gooseneck member. The air hose, duct or gooseneck member permits an inlet end thereof to be positioned in proximity to a patient so that a negative pressure can be created around the patient so that air can sucked or vacuumed into the system whereupon it is treated as the air flows through the system.

The air filtration system for a box fan is a frame that couples to a box fan and holds an air filter adjacent to the box fan such that air drawn into the box fan must pass through the air filter. The front of the frame includes a fan mount that retains the fan in the frame using a press-fit. The rear of the frame comprises a filter mount that holds an air filter in the path of air flowing through the fan. The filter mount includes a top door that retains the filter and allow access to install and remove filters. In some embodiments, the air filtration system for a box fan may include a second fan mount to hold a second air filter.

A filter device collects and stores brake particles generated by a friction brake. The filter device can be regenerated. The filter device determines that at least one boundary condition that makes it possible and/or permits the execution of regeneration of the filter device is met. In response to the determination, brake particles stored in the filter device are to be removed from the filter device.