An HVAC air distribution device to promote temperature stratification within a larger volume. The device comprised of a front side coupled to a back side defining a cavity for directing a flow of air. The front side comprised of a pliable material and configured for the distribution of the flow of air within the channel. Accordingly, the front side comprises an air permeable portion to release flow from the channel to provide a low velocity of uniform air flow across a length of the device. This low velocity uniform air flow encourages temperature stratification within a distinct area of the larger volume to increase comfort of an occupant and promote efficiency of HVAC systems.

The invention relates to a surface temperature-controlling device, in particular for use in vehicles, comprising a first air-distributing layer which has multiple air inlets extending through the first air-distributing layer and multiple air outlets extending through the first air-distributing layer, and a second air-distributing layer which fluidically connects air inlets and air outlets of the first air-distributing layer, wherein the air inlets are designed to introduce pre-heated or pre-cooled air into the second air-distributing layer, and the air outlets are designed to discharge air out of the second air-distributing layer.

An air vent for a vehicle includes a housing with an air inlet, an air outlet, and an air channel between the air inlet and the air outlet; a rigid air directing body arranged within the air channel and pivotably arranged within the housing by being affixed to a first axis; an actuator arranged within the housing in order to act on the rigid air-directing body to determine a direction of an air stream exiting the air outlet, the actuator comprising a transmission element affixed to a second axis and pivotable around the second axis.

A motor-vehicle includes one or more electrically-operated valves, arranged on the structure of the motor-vehicle in a lower position with respect to the windows, for providing a communication between a passenger compartment and the external environment, and one or more electronic control units programmed to activate a ventilation mode of the passenger compartment when the motor-vehicle is parked with the engine off, even with the driver outside the vehicle. The ventilation mode includes controlling at least partial opening of one or more windows and the opening of one or more of the valves to generate a flow of natural air from the bottom upwards through the passenger compartment of the motor-vehicle.

An air vent for a vehicle includes a housing with an air inlet, an air outlet, and an air channel between the air inlet and the air outlet; at least one rigid air directing body arranged within the air channel; and an actuator arranged within the housing in order to act on the rigid air-directing body to determine a direction of an air stream exiting the air outlet, where the actuator includes a shape memory alloy element, and the rigid air-directing body is pivotably arranged within the housing by being affixed to a first axis which runs parallel to a second axis to which the actuator is affixed to be pivotably arranged within the housing.

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 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 invention concerns a ventilator for a motor vehicle passenger compartment, intended to deliver an air flow towards a space to be conditioned, which comprises: an opening through which an air flow flows during operation, a flared guiding surface (S), extending from the opening, a needle valve (25) comprising a needle valve head (27) with: a tip (29) situated at the end of the needle valve (25), a maximum width portion corresponding in shape to the opening (O), with dimensions of between 80% and 100% of those of the opening (O), a base (33) flared in the direction of flow linking the head (29) to an elongate body (31), the needle valve (25) being able to move in translation between two end positions including: a deployed end position in which the widest portion of the needle valve head (27) is downstream from the opening (O) in the direction of the space to be conditioned, the air flow then being laminar and guided by the guiding surface (S) in a divergent flow, a retracted end position in which the widest portion of the needle valve head (27) is upstream from the opening (O), the air flow then being laminar and guided by the tip (29) of the needle valve (25) in a convergent flow.

A ventilation device may include a housing, a fluid channel system, a heat exchanger, and a slider arrangement. The slider arrangement may include at least one first slider and at least one second slider arranged within the fluid channel system upstream of the heat exchanger and downstream of the heat exchanger respectively. The first and second slider may be guidable transversely with respect to at least one fluid flow. The first and second slider may each be actuatable. At least one of a volume flow and a mass flow of at least one fluid flow may be at least one of controllable and regulatable via actuation of the first slider. At least one of a predetermined fluid temperature and a predeterminable fluid temperature of a mixed fluid may be settable and at least two fluids may be mixable via actuation of the second slider.

An air outlet device for an air-conditioning system of a vehicle includes an air outlet assembly disposed at air vents of the air-conditioning system and a control unit. The air outlet assembly includes a plurality of first air doors and a plurality of driving components, the plurality of driving components are respectively connected to the plurality of first air doors, and each driving component is configured to drive the corresponding first air door. The control unit is connected to the plurality of driving components, and is configured to control the plurality of driving components to drive the plurality of first air doors to open or close independently.