An air discharge device is configured to discharge an air flow. The air discharge device includes a main hole for discharging an air flow as a working air flow, an auxiliary hole provided around the main hole to discharge a support air flow, and a vortex suppression structure configured to suppress development of vortices generated in a velocity boundary layer of the working air flow at a downstream side of an outlet of the main hole. This vortex suppression structure is configured to make a central portion of the thickness of the velocity boundary layer of the working air flow at the downstream side of the outlet of the main hole to be closer to a mainstream of the support air flow, at the downstream side of the outlet of the main hole.

An air diffuser of a heating, ventilation, and/or air conditioning (HVAC) system includes a mixing chamber having a circulation inlet and a mixing region, a room air intake fluidly coupled with the circulation inlet and separated from the mixing region by a blank-off plate, and a nozzle. The nozzle is disposed adjacent to the circulation inlet and configured to accelerate a conditioned air flow into the mixing region such that unconditioned room air is induced by the conditioned air flow to enter the mixing region through the circulation inlet and from the room air intake.

An air diffuser for a heating, ventilation, and/or air conditioning (HVAC) system includes a variable flow adapter including a plurality of nozzles and a damper. The variable flow adapter is configured to receive conditioned air from the HVAC system. The air diffuser also includes an actuator coupled to the damper and configured to actuate the damper between a first configuration and a second configuration. The damper is configured to block the conditioned air from passing therethrough and direct the conditioned air through the plurality of nozzles in the first configuration. Additionally, the damper is configured to open to direct the conditioned air therethrough in the second configuration.

An inductive-humidification and evaporative-cooling ventilation system comprising: means for generating a flow of air; a channel for conveying said flow of air, said channel comprising a plurality of inductive holes for transferring said flow of air into the environment, said channel further comprising at least one outflow mouth for expelling said flow of air, which has a three-dimensional structure open both at the back and at the front, and a fluid-thread straightener set at the rear end of said at least one outflow mouth, which recalls a flow of air from the environment surrounding said channel; and at least one humidification device for introducing nebulised water into the environment; wherein said at least one humidification device is set within said at least one diffusion mouth, and said plurality of holes are arranged in a number of rows aligned longitudinally along the ducts.

An air diffuser for a heating, ventilation, and/or air conditioning (HVAC) system includes a variable flow adapter including a housing and an actuator configured to transition between actuation states based on an air flow parameter in the housing. The air diffuser includes a first plurality of nozzles disposed in the housing and defining a first set of flow paths from an interior of the housing to an exterior of the housing. Additionally, the air diffuser includes a second plurality of nozzles disposed in the housing and defining a second set of flow paths from the interior of the housing to an exterior of the housing. The air diffuser also includes a valve system configured to be actuated by the actuator to control air flow through the second set of flow paths of the second plurality of nozzles.

An air diffuser of a heating, ventilation, and/or air conditioning (HVAC) system includes a mixing chamber having a circulation inlet and a mixing region, a room air intake fluidly coupled with the circulation inlet and separated from the mixing region by a blank-off plate, and a nozzle. The nozzle is disposed adjacent to the circulation inlet and configured to accelerate a conditioned air flow into the mixing region such that unconditioned room air is induced by the conditioned air flow to enter the mixing region through the circulation inlet and from the room air intake.

An air diffuser (10) includes a casing (16) with an inlet (18) connected to a supply of air, and an outlet (22) defining a diffusion flow passage extending in a diffusion direction (30). A cover (32) is disposed adjacent the diffusion flow passage to define an induction flow passage (36) that is in flow communication with the diffusion flow passage and is oriented such that air from the induction flow passage (36) is drawn into the diffusion flow passage to be discharged into a room (12). A germicidal light source (38) is provided to irradiate the induction flow passage (36) and kill airborne pathogens.

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.

The present disclosure discloses an air outlet device of an air conditioner and an air conditioner. The air outlet device includes an air storage device and an induced device, wherein the air storage device includes an air storage cavity and an air accelerating structure, and the induced device includes an induced air duct, a mixing port, an air outlet and a heat storage device, wherein an induced air passing through the induced air duct and an air flow accelerated by the air accelerating structure are mixed at the mixing port, the heat storage device is disposed between an outlet of the mixing port and the air outlet, a flow equalization space is formed between the heat storage device and a side wall of the induced air duct, the heat storage device includes a heat exchanger fin provided with at least one communication port and a heat exchange tube.

Embodiments of the present disclosure are directed toward an air diffuser that includes a mounting plate having an opening in a center portion of the mounting plate, where the opening is configured to be coupled to ductwork, a low flow adapter coupled to the mounting plate and disposed over the opening, where the low flow adapter includes extruded nozzles configured to increase a velocity and induction of air flow directed toward an interior space, and where the extruded nozzles are disposed at an angle with respect to a horizontal plane defined by the center portion of the mounting plate, and a diffusion plate coupled to the mounting plate, such that the low flow adapter is positioned between the mounting plate and the diffusion plate.