A vent device includes at least one stage of a ventilation assembly, each stage of the ventilation assembly includes an inner layer element and an outer layer element. An air duct is formed between the outer layer element and the inner layer element, and the air duct has an air duct outlet. Each stage of the ventilation assembly has an air duct open position and closed position. The outer layer element and the inner layer element are configured to be able to move along the first direction relative to each other between the air duct open position and closed position. In the air duct closed position, the inner layer element closes the air duct outlet, and in the air duct open position, the inner layer element opens the air duct outlet.

The disclosure concerns an air vent for a vehicle, comprising a housing, configured to guide an air flow from an air inlet opening to an air outlet opening substantially along an axial direction, an air guiding element arranged at least partly within the housing such that a first air guiding surface of the air guiding element and the housing define a first air channel for guiding a first partial air flow, a second air guiding surface of the air guiding element and the housing define a second air channel for guiding a second partial air flow. The air guiding element also comprises a manipulator which is configured to pivot the first air guiding surface and the second air guiding surface independently of each other for regulating a ratio between the first partial air flow and the second partial airflow.

An air vent device for a vehicle includes a main vent and an auxiliary vent divided by a partition wall and combined in a single air duct, a plurality of horizontal wings mounted at positions behind the main vent and the auxiliary vent, and an air volume control wing included in the plurality of horizontal wings for distributing an air volume discharged into an interior of the vehicle through the main vent and an air volume discharged into the interior of the vehicle through the auxiliary vent. The air vent device is capable of securing an interior discharge air volume, adjusting a wind direction, securing an air duct installation space, and re-distributing a leakage amount of air.

An air outlet nozzle, in particular for a motor vehicle, includes: a tube-shaped nozzle body; a first air guide element which is arranged in the tube-shaped nozzle body, and which is in contact with the tube-shaped nozzle body and forms a screw shape; a second air guide element which is arranged in the tube-shaped nozzle body, and which is in contact with the tube-shaped nozzle body and forms a screw shape. The first air guide element and the second air guide element are offset from one another in the tube-shape nozzle body, such that a first airway and a second airway are formed in the tube-shaped nozzle body. A moving adjustment element closes the first airway in a first position, and releases the first airway in a second position.

An outflow nozzle of a motor vehicle includes a housing having at least one outflow slit on the outflow side. The housing narrows towards the outflow slit while forming guide surfaces, in which housing a horizontal lamella that is assigned to the outflow slit and that can be changed in its position is mounted. On the outer side, the horizontal lamella is provided with opposing lead surfaces for the air flow. Transversely to the horizontal lamella, at least one vertical lamella that is pivotable about a vertical pivot pin is arranged. The lead surfaces of the horizontal lamella, which can be pivoted about a horizontal pivot axis, run in an inclined manner towards the outflow slit.

A blowing device includes a passage member and a passage switching device. The passage member is inserted into an air passage configured to blow a main air into the vehicle cabin. The passage member is configured to blow an added-value air. The passage member includes, in the air passage, a passage opening portion through which the added-value air is blown toward a passenger separately from the main air. The passage member defines a hole portion and the passage switching device is a damper or a rotary door. The damper or the rotary door closes the hole portion to allow the added-value air to flow out through the passage opening portion and fluidly connects the hole portion to the air passage to allow the main air to flow out through both the passage opening portion and a region of the air passage other than the passage opening portion.

A fluid discharge device includes a base portion defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage, and a grill portion disposed to adjust a flow direction of the fluid blown from the opening. The grill portion includes a flow passage forming body defining a main flow passage and an auxiliary flow passage. In the flow passage forming body, the auxiliary flow passage surrounds the main flow passage and the auxiliary flow discharged from the auxiliary flow passage flows outside of the main flow discharged from the main flow passage. The flow passage forming body is configured such that a direction of the auxiliary flow discharged from the auxiliary flow passage corresponds to the direction of the main flow discharged from the main flow passage, when the flow direction of the fluid blown out of the opening is adjusted.

A fluid discharge device is for discharging a fluid includes a duct defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage. The fluid discharge device includes a grill portion disposed in the fluid flow passage to adjust a flow direction of the fluid blown from the opening. The grill portion includes at least an adjustment fin rotatably arranged in the fluid flow passage, and is provided with an auxiliary flow passage that guides a part of the fluid flowing through the fluid flow passage to the opening as an auxiliary flow. The auxiliary flow passage is configured together with the adjustment fin to adjust a flow direction of the auxiliary flow discharged from the auxiliary flow passage to be aligned with the flow direction of the fluid flowing through the fluid flow passage.

An air discharge device includes an air discharge unit for discharging an air flow. The air discharge unit includes at least one main hole from which an air flow is blown out as a working air flow, and a separation structure configured to separate a central portion of a thickness of a velocity boundary layer of the working air flow from a center line of the main hole at a downstream side of the main hole.

An air vent for ventilating a passenger compartment of a motor vehicle. The air vent includes an air channel, which is divided, by an air splitter, into two partial air channels, which can be steplessly partially or completely blocked for air passing through, by blocking elements, which are pivotably mounted at the air splitter. The blocking elements may be displaced by way of a ram, which can be moved in the air splitter transversely to the air channel. Either one or the other blocking element can be selectively displaced by way of the ram. The respective other blocking element, in an open position, then rests against the outside of the air splitter.