A negative pressure-side flow path having a negative pressure-side filter and a positive pressure-side flow path having a positive pressure-side filter are connected in parallel between a first port and a second port, and a shuttle valve is installed between the negative pressure-side flow path and the positive pressure-side flow path, and the first port, thus when a negative pressure is supplied to the first port, the first port is caused to communicate with the second port through the negative pressure-side flow path, and when a positive pressure is supplied to the first port, the first port is caused to communicate with the second port through the positive pressure-side flow path.

The invention refers to a plant for treating receptacles adapted to contain a pourable product comprising: at least a treatment unit apt to carry out a treatment process on the receptacles; an isolation chamber housing the treatment unit and containing, in use, a controlled atmosphere controlled in sterile and/or aseptic conditions; and a filtering unit configured to filter a gas to be introduced in the isolation chamber for constituting the controlled atmosphere; wherein the treatment plant further comprises a test device housed inside the isolation chamber, immersed, in use, in the controlled atmosphere and configured to perform one or more test operations on the filtering unit.

Disclosed is a non-woven fabric that can provide a filter capable of achieving a high collection rate, low pressure loss, and long-term use. The non-woven fabric disclosed herein is made of fibers containing a crystalline alicyclic structure-containing resin, and has a pore diameter as measured by a bubble point method of 5 m or less.

A system includes a filter purge apparatus configured to supply a flushing gas to a portion of a factory interface chamber located upstream of a chamber filter to minimize moisture contamination of the chamber filter by ambient air. The filter purge apparatus is configured to supply the flushing gas in association with breach of the factory interface chamber which compromises controlled environment of the factory interface chamber.

The purpose of the present invention is to provide a clean air device that can reduce the risk of contamination due to static electricity. Provided is a biosafety cabinet or a clean air device that connects a biosafety cabinet and a clean booth, wherein a static eliminator (ionizer) that generates a corona discharge by way of concentrating an electric field on a needle-shaped discharge electrode and eliminates static with ionized air is disposed directly above an air flow branching point where air supplied to a work space branches to the front face and to rear face inside the biosafety cabinet.

A dry room for gas substitution has a drying chamber to receive dry air from a dry air supply device. Gas is circulated between inside the drying chamber and the dry air supply device. An airtight container is accommodated in the drying chamber. A low dew point gas supply device coupled to the airtight container removes moisture and supplies low dew point gas to the airtight container via a filter that removes foreign matter. An inert gas purification device removes oxygen and supplies an inert gas to the airtight container. A gas exhaust passage exhausts gas in the airtight container to outside of the drying chamber. The low dew point gas supply device and the inert gas purification device are independently provided so that moisture removal via the low dew point gas supply device is adjusted independently of oxygen removal via the inert gas purification device.

The invention relates to air cleaning and enrichment systems, namely, to systems for providing a user with a healthy air, and it may be used in living, training, medical and working rooms, interiors and cabins of vehicles in order to provide household, medical and other people needs in the air that is cleaned from harmful impurities and chemically healthy.

The system In.AirBox for providing a user with a healthy air is capable of creating the airflow and comprises a room with at least one means for arranging the user, an air delivery duct, a control device, at least one container comprising the air that is collected in a forest area or in mountains, or over a sea or a seaside, or cleaned from harmful impurities, or comprising added healthy impurities, an air output duct that is coupled to the at least one container comprising the air and that is capable of supplying the air from the at least one container into the room. The air delivery duct is configured with a filter and is capable of supplying the air from the environment into the room that is capable of being closed and equipped with at least one measurement device that is capable of measuring the air pressure and/or temperature, and/or moisture, and/or a number of impurities therein, and coupled to the control device, while the control device is capable of regulating the airflow rate supplied from the air output and delivery ducts depending on parameters of the at least one measurement device.

A technical effect lies in increase of the efficiency, providing safety for the user's health, flexibility, simplicity of use, simplification of the structure, cost-cutting of the air cleaning and enrichment process.

A stackable air filter module includes a base gas filter unit and at least one additional gas filter unit. The base filter unit includes a metal frame and at least one first filter body located in the filter passage of the metal frame. At least one additional filter unit is detachably superposed on the base filter unit, and the additional filter unit includes a filter frame and a second filter body located in the filter passage of the filter frame. The service life of the filter material contained in the first filter body is greater than the service life of the filter material contained in the second filter body.

Provided are filtration systems, filters, and corresponding methods of installing and using a clean room filter. A filtration system may include a housing defining a vent opening and a filter opening. The housing may include a knife edge disposed about a perimeter of the filter opening and configured to extend downwardly. The filtration system may include a filter removably attached to the housing. The filter may include a frame having an opening and a channel disposed about a perimeter of the opening. The filter may further include a filter substrate disposed in the opening of the frame, a gasket disposed about a perimeter of the opening within the channel, and an adhesive compound disposed within the channel between the gasket and the channel. The filter may be configured to engage the knife edge of the housing, such that air may be configured to pass between the clean room and a duct via the filter.

Electronic device processing apparatus including factory interface chamber with environmental controls and a purge control apparatus allowing purge of a chamber filter. The filter purge apparatus includes a chamber filter and a flushing gas supply configured to supply flushing gas to the chamber filter when an access door to the factory interface chamber is open to allow personnel safe servicing access to the factory interface chamber. The supply of flushing gas to the chamber filter minimizes moisture contamination of the chamber filter by factory ambient air when the access door is open thereby allowing rapid resumption of substrate processing after factory interface servicing. Purge control methods and apparatus are described, as are numerous other aspects.