A system for reducing airborne pathogens and contaminants in a breathing zone of a person is disclosed. A manifold assembly includes a tube fitted with an air intake nozzle. The air intake nozzle is positioned at the breathing zone of the person such that an air gap is created between the person and the nozzle. Exhaled air is routed from the person to the manifold assembly via the tube. A purification unit deactivates and/or filters airborne pathogens and contaminants of the exhaled air supplied from the manifold assembly. A suction assembly draws the exhaled air from the breathing zone of the person, through the manifold assembly and the purification unit, to a one-way exhaust valve.

An air cleaner includes: a body formed with an air suction hole defined on a side of the body, and allowing air to be introduced into the body therethrough; a metal casing into which an upper section of the body is inserted from below; a flow creation mechanism disposed inside the casing to create an air flow into and through the air cleaner; a filter disposed in the body between the air suction hole and the flow creation mechanism configured to purify air; a capacitive switch partially exposed outside the casing through a switch exposure hole defined through the casing; and a printed circuit board (PCB) disposed between one side wall of the upper section of the body and an inner wall of the casing.

An apparatus is used with supplied power for treating air flow of an air handing system of a facility. A frame has a plenum with an inlet and an outlet. The frame is configured to position in the air flow of the air handing system for passage of the air flow therethrough. A filter is disposed in the plenum and is configured to filter the air flow therethrough up to a filtration threshold. An ultraviolet light source disposed in the plenum is connected in electrical communication with the supplied power and is configured to generate ultraviolet radiation in the plenum. A permeable metal barrier disposed in the plenum is configured to impede the air flow therethrough up to an impedance threshold. The barrier is connected in electrical communication to the supplied power and is heated to a surface temperature.

Provided is a molded filter used for a flexible disposable bag which is produced so as to be capable of sucking and storing, for example, bodily secretions of a patient and being disposed when a fixed storage amount is reached, wherein a laminate of at least two elements of a powdered hydrophilic swelling agent and a charged nonwoven fabric, and more preferably, a laminate of three elements with a hydrophobic porous film added thereto, is used as a filter base material and the charged nonwoven fabric is arranged downstream of the powdered hydrophilic swelling agent in a direction of flow of expiratory air inside the body. Thus, the molded filter has functions of air permeability that is equal to or higher than a PE sintered body CMC filter, short term and long term waterproof properties, and a better microbial barrier property.

A plant air purifier with filter material within a filter bed container, wherein the filter material can both allow air to pass through it during the unit's air purification phase and for water to submerge the filter material during its remoisturization phase The unit itself passes through various phases and sub phases: an air purification phase; followed by a remoisturization phase, which includes an immersion of the filter material sub phase, and a draining away of the water during its drainage sub phase. And in some cases, a soaking sub phase of the filter material for some time. Three different embodiments of the unit are provided: a unit with a separate soaking; chamber outside the unit; one with an outer pot surrounding the filter container; and one with a flapper below the filter bed container.

A miniature gas detection and purification device is disclosed for a user to carry with him, and includes a main body, a purification module, a gas guider and a gas detection module. The gas detection module detects the gas in the environment surrounding the user to obtain a gas detection datum, and controls the gas guider to be operated according to the gas detection datum, so that gas is inhaled into the main body and flows through the purification module for filtration and purification, and the gas purified is finally guided to an area nearby the user.

An air purification device for purifying and recirculating air includes a housing, a filter mounted within the housing adjacent an inlet of the housing, a blower for drawing room air into the housing through the inlet, and an ionizer mounted at or adjacent both an exhaust portion of the blower and an outlet in the housing. Filtered air drawn into the housing by the blower is ionized immediately prior to being ejected from the housing. A silencer duct may be provided at the exhaust portion of the blower for mounting the ionizer and reducing noise.

A miniature gas detection and purification device is disclosed for a user to carry with himself, and includes a main body, a purification module, a gas guider and a gas detection module. The gas detection module detects gas of surrounding environment to obtain a gas detection datum, and controls the gas guider to be operated according to the gas detection datum, so that gas is inhaled into the main body and flows through the purification module for filtration and purification, and the gas purified is finally guided to a region close to the user.

An air purifying apparatus for purifying air in an isolation space is disclosed. The isolation space is surrounded by a mask body and bounded from an outer space by the mask body. The air purifying apparatus includes a main casing, an intake device and a decontamination device. The main casing is formed with an accommodating space, an inner exhausting runner and an inner intake runner. The inner exhausting runner is communicated with the isolation space and the accommodating space. The inner intake runner is communicated with isolation space and the accommodating space. The intake device and the decontamination device are disposed in the accommodating space. The decontamination device is for purifying and decontaminating air in the accommodating space.

The present application proposes an air purification device with filter cartridge self-cleaning, which includes: cabinet, air filter cartridge and centrifugal fan, a first mounting plate and a second mounting plate are arranged in the interior of the cabinet from top to bottom, the first mounting plate and the second mounting plate divide the interior of the cabinet into a first chamber, a second chamber, and a third chamber, the cabinet is provided with an air inlet communicating with the first chamber, and with a plurality of air outlets communicating with the third chamber; the air filter cartridge is arranged in the second chamber, the air filter cartridge includes an end cover, a bottom cover and a filter cylinder, and the two ends of the filter cylinder are respectively connected with the end cover and the bottom cover, and the filter cylinder is used for filtering and purifying the air, a cleaning assembly is arranged in the filter cylinder for removing dust adsorbed on the filter cylinder; the centrifugal fan is installed in the third chamber. In the present application, a negative ion generator is arranged in the cabinet, and the negative ion generator generates negative ions to charge the dust in the air, so that the charged dust is adsorbed on the air filter cartridge during the air flow process, the air through the air filter cartridge is cleaned to achieve air purification.