A multi-layered replaceable filter assembly (100) and a microfilter assembly (200) for providing safety from external exposure. The multi-layered micro filter assembly includes plurality of filter membranes. A first filter membrane (104) prevents particles greater than 10 micron from entering the multi-layered replaceable filter assembly (100). A second filter membrane (106) has embedded activated carbon that destroys micro-organisms including viruses and bacteria. As we go further downstream, the fiber density per cm keeps increasing with the filter membranes. A fifth filter membrane (112) made up of a combination of crabyon fiber and electro-spun nano fibers provides comfort and anti-allergic effect. A sixth filter membrane (114) lowers the velocity of air that occurs from breathing and a method thereof.

A fluid treatment device including: a pipe having an inlet through which fluid is introduced into the pipe from a fluid treatment space, an outlet through which sterilized fluid is discharged to the fluid treatment space, and a flow channel connecting the inlet to the outlet, the pipe providing a sterilization area in the flow channel; a solvent filling at least a portion of the sterilization area; and at least one light source module disposed in the sterilization area, and including a light source to emit sterilizing light and a substrate on which the light source is mounted, in which the fluid introduced through the inlet passes through the solvent towards the outlet, the solvent traps contaminants contained in the fluid when the fluid passes through the solvent, and the light source module sterilizes the solvent with the contaminants trapped therein.

A device for generating an upwardly blowing air curtain to protect against airborne pathogens and pollutants.

An electronic microbicidal air filter is provided as an ambient air filter in aeration supports or ventilation grids and as an air filter for PPE protection masks. The filter includes an UVC luminaire (2), a power module (3), activation sensors (4), internal structure (5) with walls defining filtering chambers (6) with exposure membranes (7) sandwiched between the chambers (6) under the luminaire (2), so that the chambers (6) determine a winding zigzag path for the air that passes therethrough, while the particles carried by the air are irradiated by the luminaire (2) directly. The functional elements in the internal structure (5) of chambers (6) are integrated in an encapsulation (9) that surrounds the external part of the assembly and defines a sealed space for the functional and support elements at the ends of the structure (5).

The invention relates to the field of air purification, sterilization, disinfection, sanitization, removal of particulate matter and harmful gases. A UV light source(102), which is preferably positioned parallel to the flow of air ensuring continuous disinfection of the airstream due to increased residence time, and a filter (106) that is preferably positioned surrounding/around the UV source. In an embodiment, the invention is disclosing a self-cleaning ability that is achieved by using electrostatic fields. In another embodiment, a small, compact self-cleaning purifier/device can be used to sanitize small, enclosed spaces like cars, cabins, etc.

An entrainment-based filtering system for use in connection with a facemask or respirator that includes: a filter housing defining an interior volume comprising at least one airflow pathway having an airflow pathway length that is longer than the length of the interior volume and spaced within the interior volume; and a plurality of entrainment substrates. The plurality of entrainment substrates is positioned within the at least one airflow pathway and the plurality of substrates and the dimensions of the at least one airflow pathway together function to entrain particles on the surface of the chemically coated entrainment substrates and prevent at least 95% of particles traveling through the at least one airflow pathway from exiting the entrainment-based filter.

An air management system for a common indoor room or space that comprises a plurality of air outflow apertures or vents, a plurality of air curtains having at least a portion of the air curtains separated from one another, a plurality of separated air suction intakes, and an air sterilization and/or air cleaning mechanism.

This disclosure relates to aggregating, neutralizing, and filtering ultra-fine particles in fluids such as air and water. Fluid may be drawn from an ambient environment into a neutralization chamber. Within the neutralization chamber, particles in the fluid may be agglomerated. An acoustic field may be applied to the fluid to agglomerate the particles. The agglomerated particles may be exposed to light. The light may denature or deactivate the agglomerated particles. The agglomerated and inert particles maybe passed through a filter. After agglomeration and neutralization, the fluid may be released back into the ambient environment.

An air management system for a common indoor room or space that comprises a plurality of air outflow apertures or vents, a plurality of air curtains having at least a portion of the air curtains separated from one another, a plurality of separated air suction intakes, and an air sterilization and/or air cleaning mechanism.

This disclosure relates to aggregating, neutralizing, and filtering ultra-fine particles in fluids such as air and water. Fluid may be drawn from an ambient environment into a neutralization chamber. Within the neutralization chamber, particles in the fluid may be agglomerated. An acoustic field may be applied to the fluid to agglomerate the particles. The agglomerated particles may be exposed to light. The light may denature or deactivate the agglomerated particles. The agglomerated and inert particles maybe passed through a filter. After agglomeration and neutralization, the fluid may be released back into the ambient environment.