The present disclosure relates to a ventilation apparatus. The ventilation apparatus of the present disclosure comprises: a casing; a suction device accommodated in the casing and having a suction fan for generating a suction force for sucking in air; and a vortex forming device accommodated in the casing and having a swirler rotating below the casing to form a vortex and a driving motor for rotating the swirler, wherein the swirler includes a rotating plate having an air passage hole and a plurality of blades arranged and spaced apart in a circumferential direction along the rim of the rotating plate, and the vortex forming device is positioned lower than the rotation center of the suction fan in the casing.

A local exhaust device includes a main body part having an inlet port formed on a lower surface thereof and a vertex forming device installed on the main body part for forming a vortex so as to induce intake of external air through the inlet port. The vortex forming device comprises a swirler disposed on the inlet port and rotated so as to form a vortex; a driving part for rotating the swirler, and a flow guide disposed on the inlet port for guiding downstream the flowing air in a rotating process of the swirler. The flow guide comprises an upper surface disposed on an upper portion of the swirler, wherein the upper surface of the flow guide comprises an open region for opening the upper portion of the swirler and a closed region for blocking the upper portion of the swirler.

A temperature control system in an aircraft passenger service unit is disclosed. In embodiments, the system includes a swirl chamber configured to receive an inlet air stream, and a vortex tube configured to receive the inlet air stream from the swirl chamber and separate the inlet air stream into a warmer air stream and a cooler air stream. In embodiments, the system further includes a nozzle configured to direct a temperature-controlled air stream into a passenger space of an aircraft; wherein the nozzle is configured to be selectably adjusted in order to selectively blend the warmer air stream and the cooler air stream in order to generate the temperature-controlled air stream.

A swirl air/liquid air purifier comprises: a liquid accommodating disk, having a liquid accommodating space formed in a recessed status for accommodating a liquid; an air discharging pipe, disposed at a top end of the liquid accommodating disk and upwardly extended so as to be formed as a hollow body, wherein a bottom end thereof has a bottom base which is sealed at the top end of the liquid accommodating disk, the bottom base is formed with a plurality of air inlet holes arranged adjacent to a periphery of the air discharging pipe, one side of the air inlet hole is downwardly extended and obliquely inclined thereby forming an inclined guiding plate/pipe allowing a swirl airflow to be generated; and an air suction fan, disposed in the air discharging pipe.

An air diffuser for supplying air to a space is provided, the diffuser having a central axis, a plurality of discharge elements arranged to guide an air stream towards the space and defining a face of the diffuser and a plurality of channels located about the diffuser central axis, with each channel formed between adjacent pairs of discharge elements. An adjustment mechanism is also provided for adjusting a discharge direction of an air diffuser, as well as methods of forming the air diffusers and adjustment mechanisms hereof.

An air flow discharging device includes a discharging port. The air flow discharging device intermittently discharges an air flow through the discharging port so that an air flow that exerts a predetermined effect hits a target person periodically. A sleeper supporting device may include the air flow discharging device. A time notification device may include the air flow discharging device.

An active airflow inhibiting apparatus for an entranceway comprises a structure, an airflow sensor, and a controller. The structure comprises one or more air mover devices configured to be positioned adjacent an entranceway of a building and defining a passage therethrough for accessing the entranceway. The airflow sensor is configured to provide an output indicative of speed and direction of airflow through the entranceway or at the air mover devices. The controller is connected to the air mover devices and the airflow sensor. The controller is configured to receive the output of the airflow sensor and to control an output of the air mover devices based on the received output so as to generate a differential pressure across the air mover devices which inhibits airflow through the entranceway.

An airborne dust cleaner includes a case having an inlet at one side thereof, an outlet at another side thereof, and a space therein, a vortex vacuum generator installed at the inlet and generating and extending a low-pressure zone of a donut-like vortex around the inlet to collect fine dust, and a filtering assembly installed at the outlet and filtering the fine dust collected through the vortex vacuum generator.

An air conditioning device includes a body comprising an inlet plenum portion to receive input air including vapor molecules, a spray chamber portion to receive the input air, the received input air being rigorously mixed within the spray chamber, a sprayer portion to charge a liquid droplet and to release the charged liquid droplet into the rigorously mixed air to cause the charged liquid droplet to attract a vapor molecule, such that the vapor molecule attaches to the charged liquid droplet and separates from the input air, a separation chamber portion to cause the liquid droplet with the attached vapor molecule to separate from the rigorously mixed air and to condense and collect as liquid within an outlet plenum, and an air outlet portion to direct output air from the air conditioning device, a first humidity of the output air being less than a second humidity of the input air.

A temperature control system in an aircraft passenger service unit is disclosed. In embodiments, the system includes a swirl chamber configured to receive an inlet air stream, and a vortex tube configured to receive the inlet air stream from the swirl chamber and separate the inlet air stream into a warmer air stream and a cooler air stream. In embodiments, the system further includes a nozzle configured to direct a temperature-controlled air stream into a passenger space of an aircraft; wherein the nozzle is configured to be selectably adjusted in order to selectively blend the warmer air stream and the cooler air stream in order to generate the temperature-controlled air stream.