An active airflow inhibiting apparatus for an entranceway comprises: a structure positioned adjacent an entranceway of a building and defines a passage therethrough for accessing the entranceway. The structure defines at least one plenum chamber and first and second outlet slots fluidically coupled to the plenum chamber. A fan fluidically connected to the plenum chamber supplies an airflow to the plenum chamber in order to selectively form a jet of air from the first outlet slot in a first mode of operation and from the second outlet slot in a second mode of operation The first and second outlet slots are configured so that the respective jets of air are each directed towards a centre of the structure, with the jet of air from the first outlet slot being directed away from the entranceway and the jet of air from the second outlet slot being directed towards the entranceway.

A system and method for creating a microenvironment within an ambient environment is disclosed. The first outlet is configured for expelling a gas at a first velocity sufficient for producing a gas curtain that separates the microenvironment from the ambient environment. The second outlet is configured for expelling the gas at a second velocity within the microenvironment. An inlet is spaced apart from the first outlet and the second outlet and is in fluid communication with a suction unit. The suction unit is positioned downstream of the inlet and configured for removing gas from the microenvironment through the inlet. The first velocity is greater than the second velocity.

An apparatus is provided for preventing the spread of air-borne contaminants in a defined space. The apparatus comprises an air flow outlet adjacent to or within the defined space, an air flow inlet adjacent to or within the defined space, and a conduit for transporting air from the air flow inlet to the air flow outlet. An air treatment module is provided within or adjacent the conduit for extracting air-borne contaminants from air transported from the air flow inlet to the air flow outlet. The air flow outlet deposits air into the defined space substantially evenly across an outlet area.

An air curtain generating device includes: a plurality of pairs of an air jet unit and an air suction unit placed opposite each other on both sides in a lateral direction of an inlet/outlet of a drying chamber, the plurality of the pairs being aligned up and down, the air suction units sucking air ejected from the air jet units to generate an air curtain; a first air guide provided to the air jet units in an upper part of the inlet/outlet to guide air ejected from the air jet units in a direction inclined inward of the drying chamber relative to the lateral direction of the inlet/outlet; and a second air guide provided to the air jet units in a lower part of the inlet/outlet to guide air ejected from the air jet units in a direction inclined outward of the drying chamber relative to the lateral direction.

Disclosed is an air umbrella apparatus including an air suction pipe having an air suction hole in an upper end thereof, a water collection pipe disposed concentrically with the air suction pipe and having an upper end coupled to a water-collection-inducing pipe for guiding rain or snow downward, an exhaust pipe disposed concentrically with the water collection pipe and having an upper end coupled to an exhaust-guiding pipe for guiding air outward, a communication pipe coupled to the air suction pipe, the water collection pipe, and the exhaust pipe for communicating the air suction pipe with the exhaust pipe, and a blower disposed between the exhaust pipe and the water collection pipe for the introduction and exhaust of air. The exhausted air forms an air curtain having a predetermined area above the exhaust-guiding pipe, thereby preventing rain and snow from falling from the exhaust-guiding pipe.

The present invention provides an intelligent air shield formation device, having a plurality of nozzles are configured to discharge purified air towards ground, detecting a body region of the detected person, generating region information, controlling the plurality of nozzles corresponding to the region information, generating movement information based on a speed of movement of the body region, controlling the shape of the region information to be deformed based on the movement information.

Device and method for a UV air sanitizer with boundlessly-extended sanitizing chamber are provided. The device comprises an enclosure with an inlet emitter area with directional louvers. The inlet emitter area optimized for drawing in outside air stream, while simultaneously emitting ultraviolet germicidal radiation into said outside air stream. The device further comprises a fan and a disinfection unit with at least one UV lamp. The UV lamp is uniquely positioned and directed inside the enclosure, so as to simultaneously irradiate: air moving inside the enclosure, air entering through the inlet emitter area, as well as a moving stream of air, said air located outside of the enclosure and drawn toward the inlet area by the fan. The method includes the steps required to use the device for creation of one or multiple germicidally-protective defensive air curtains.

A method for manufacturing an air curtain device includes steps of: a) providing a frame that includes two side wall bodies and two end wall bodies cooperatively defining an inner space thereamong, and an upper opening and a lower opening through which the inner space communicates with the external environment; b) covering an upper surface and a lateral outer surface of the frame with a first covering layer; c) closing the lower opening by placing an air-permeable plate; d) sealing a gap between the air-permeable plate and the frame by a first adhesive; e) removing a portion of the first covering layer that covers the upper surface of the frame; and f) closing the upper opening by a cover that is sealingly connected to the frame.

A novel and versatile vertical ventilation diffuser system to reduce transmission of airborne particles provides an harmful airborne particle nearly free indoor environment for one or multiple person to breathe, and to isolate and protect the personal space of a person by means of reducing the horizontal flow of air inside an enclosed space and transporting any possible harmful airborne particles, such as viruses, by means of a top down air flow. Thereby, a continuously clean environment is maintained by generating an air curtain around each person by means of a vertical ventilation diffuser system, which may be custom designed and sized for multiple types of suspended ceilings, or in standard sizes, with particular application in office, school, restaurant or concert hall settings. The versatile vertical ventilation diffuser system may further be implemented in a matrix configuration to promote the use of multiple users in a single indoor space.

A hygiene management device for an entrance hall and a control method of the same are proposed. The hygiene management device may be installed in the space of the entrance hall, and when the opening of an entrance door is detected, air is discharged toward the entrance door by tilting an air discharger toward the entrance door, and when the closing of the entrance door is detected, the air discharger is tilted to a preset initial position to stop the discharging of air. Accordingly, during the opening of the entrance door, the introduction of external air into the space of the entrance hall may be minimized.