DE102015116242B3 - air vents - Google Patents

Abstract

An air vent is described, which has a housing (18) with an air feed section (12), a flow channel (14) and an air outlet section (16). The flow channel (14) has at least two opposite sections (30) which reduce the flow channel (14) starting from the air supply section (12) and starting from the air outlet section (16). At least one channel (32) is arranged behind the sections (30) and is connected to the air supply section (12) via first openings (34) and has second openings (36), wherein the second openings (36) are arranged in the flow channel (14 ) protrude. Closing devices are arranged on the air vent, via which the amount of air supplied via the first openings (34) into the at least one channel (32) can be controlled by opening and closing the first openings (34).

Description

An air vents comprising a housing having an air supply section, a flow channel and an air outlet section will be described. Such air vents are used for example in motor vehicles for supplying air and for adjusting the direction of the outflowing air and the amount of outflowing air.

Conventional air vents have both vertically and horizontally extending fins, which are arranged in a flow channel. These fins can be pivoted via a device both vertically and horizontally, to influence the direction of the outflowing air. Such air vents usually have a rectangular or round cross-section.

In addition, air vents are known with a rotatably mounted insert and a substantially round cross-section. These can also have lamellae, wherein the lamellae are often mounted in a ring and the direction of the outflowing air takes place by a rotation of the ring and pivoting of the lamellae mounted therein.

Air vents are also known from the prior art, which have means which form a spoiler for air flow. DE 10 2010 049 110 A1 discloses an air distribution device for a motor vehicle. The air distribution device has an air outlet opening and an air guide element, via which the air outflow direction of an air jet emerging from this air outlet opening can be changed. The air guide is periodically pivotally movable via drive elements, wherein the air guide is designed as an inner component of the spoiler. The spoiler device furthermore has a baffle wall, which is opposite a baffle flap in the flow cross-section of the air duct and is arranged offset in the flow direction to the baffle flap upstream. By a negative pressure, which occurs in the wake of this baffle, the effect caused by the issued damper lateral deflection of an air jet is supported.

DE 100 63 189 B4 discloses a ventilation device having a channel through which air flows in one direction, which has an air outlet opening and, within the channel, pairs of controllable air guide elements which are opposite one another in pairs for deflecting the air flow. A first air guiding element for deflecting the air flow is in the direction away from the channel wall and a second air guiding element opposite the first air guiding element for deflecting the air flow is formed in the direction of the channel wall. The air guide elements in the channel wall are then mounted on the channel wall and the second air guide is designed to deflect the air flow due to the Coanda effect. For this purpose, the second air-guiding element is arranged offset from the first air-conducting element in the longitudinal direction of the channel to the interior of the channel, whereby a negative-pressure region arranged downstream of the channel wall is formed.

Out DE 10 2014 009 850 A1 is a Luftausströmer for a vehicle, with at least one air-flowable air guide disclosed. The air guide element can be pivoted about at least one pivot axis by at least 360 degrees, the air guide element having on a first side a plurality of first throughflow openings for the air and on a second side opposite the first side a plurality of second passage openings, each one of the air have flow-through larger cross-section than the first flow openings.

Out DE 41 32 797 A1 is an air outlet, in particular a slot outlet or swirl outlet, with a housing which preferably at least one provided with at least one air outlet opening air guide receives adjustable known. To avoid contamination, it is provided that the air outlet opening is assigned at least one of a part of the supply air supplied to the air outlet flowed Sperrluftauslassöffnung such that the emerging there blocking air flow to the housing and / or the adjacent Luftauslass Einbauwand- or ceiling area, preferably after the Coanda effect.

DE 34 37 259 C2 discloses a venting device having a plurality of juxtaposed fins that exploit the Coanda effect. The slats are arranged in a ventilation channel fixed along a tightly locked curve and rotatably supported. They are controlled so that each lamella assumes a different angle to the incoming air. To set a large outflow angle, one half of the air nozzle is closed by the lamellae located in this half so that the lamellae form a convexly curved curve. As a result of the Coanda effect, the air flow is directed along this convex curve and deflected accordingly.

The disadvantage with the known from the prior art Luftausströmern is the use of fins or other deflection means, which must be moved. Movement of components of a device always involves the risk of failure or failure due to damage or failure comes from components of these facilities. For example, slats could jam after frequent pivoting or the adjusting means, which is often mounted on a so-called control blade, are difficult to move.

However, air vents are said to be easy to use and susceptible to interference. In addition, it is desired that air vents have a visually pleasing appearance and require only a small amount of space.

In the prior art, for example, various covers for the air outlet area of a Luftausströmers have been given with slats mounted behind pivotally mounted, but the sight of a "ventilation grille", having horizontally and vertically extending fins, perceived as unattractive. The same applies to conventional air vents with visible mounted in the air outlet fins.

Furthermore, air vents are known from the prior art, wherein an air deflection is achieved without arranged in the air outlet region fins.

JP S60-182641 U discloses an air vent having an increasing primary air channel and two opposing secondary air channels. The secondary air channels have openings through which air is introduced perpendicular to the main axis of the primary air channel. In order to achieve a deflection of the air discharged via the primary air duct, air is supplied to the primary air duct via one of the two secondary air ducts. For this purpose, pivotable flaps are provided which control the air supply from an air main duct to the secondary air ducts.

However, the maximum deflection in the JP S60-182641 U low air outlet described.

DE 10 2013 111 175 B3 discloses an air vent comprising a housing having an air outlet opening, a first connection to an air supply channel and a continuous flow channel. The flow channel is curved at least at two opposite sections such that the cross section of the flow channel increases towards the air outlet opening. The at least two sections have openings which each open into a chamber located behind the sections. The chambers each have a second port, separate from the first port, for supplying or discharging air for generating overpressure and / or underpressure.

A disadvantage of the in DE 10 2013 111 175 B3 disclosed air vents are the second ports and the necessary air supply, so that an overpressure and a negative pressure can be generated in the chambers. Due to the air supply, the chambers and the second connections additional space is required. In addition, there is the danger that dust can be sucked into the chambers through the openings in the sections when a negative pressure is generated in the chambers.

It is therefore an object to provide a lamellar air vent that does not require separate air supply and connections, provides air deflection over a large deflection range, and is simple in design.

The object is achieved by an air vent with the technical features specified in claim 1. Advantageous developments are specified in the dependent claims in detail.

In an air vent having the above object, comprising a housing having an air supply section, a flow channel and an air outlet opening, the flow channel has at least two opposite sections which reduce the flow channel starting from the air supply section and starting from the air outlet section, at least one channel behind the sections is arranged, which is connected via first openings with the Luftzuführabschnitt and having second openings, wherein the second openings project into the flow channel and closing means are arranged, via which the amount of the first openings in the at least one channel supplied air by opening and closing the first openings is controllable.

The air vents do not require separate air supply sources or controls. The distraction of the air takes place by generating a back pressure due to the special design of the flow channel and by utilizing the Coanda effect. The back pressure through the air channel constriction between the sections causes a better air flow deflection, as is possible for example in an air vent, as in JP S60-182641 U is disclosed. Without a constriction in the flow channel, the deflection angles of the air flow are low, even taking advantage of the Coanda effect.

In the air vent described herein, to adjust the deflection of the airflow across the air exit section, only the supply of air via the first openings into the at least one duct is to be controlled. This does not have to be supplied with a separate air flow for deflecting the main air flow, but the main air flow can be divided by the first openings. The air flowing into the at least one channel (secondary air flow) then determines to what extent a deflection of the main air flow (primary air flow) takes place. The secondary air flow is supplied via the second openings to the flow channel and causes an air deflection of the primary air flow. In this case, the opposite sections and the correspondingly formed regions of the air outlet region are curved in such a way that a desired deflection can take place by utilizing the Coanda effect. However, it is crucial that a greater air deflection is possible over the back pressure, which is generated between the air duct constriction than would be possible without such a narrowing of the channel. The velocity of the primary air flow increases through the channel constriction, thereby causing the impinging secondary air flow a greater deflection of the primary air flow.

In addition, there are no insulated chambers and air supply means as in the DE 10 2013 111 175 B3 disclosed air vents necessary. This results in a space savings, which in particular has a cost-reducing effect on ventilation devices that are subject to a small space requirement. In addition, no separate air supply must be provided, which also increase the cost and significantly increase the complexity of Luftausströmers.

For example, the air vents described herein may be installed on dashboards of automobiles. An air flow is provided via the air supply duct via an air conditioning system or another air supply device.

The Luftausströmer described herein allows the implementation of hidden Luftausströmern without conventional control and adjustment mechanisms, such as pivotally mounted fins. In addition, the air vent allows a staggered arrangement in a dashboard. As a result, the visual appearance can be further improved or the air vent for occupants of a motor vehicle visually barely perceptible. In order to completely cover the outlet opening, ventilation grilles or fabrics can be stretched over the air outlet section. As a result, however, the deflection of the air flow can be adversely affected.

In one embodiment, the air vent has a single channel circumferentially disposed about the flow channel and the sections. However, this channel has at least one upper, first opening and a lower, first opening and at least one upper, second opening and a lower, second opening. According to the supply of a secondary air flow into the channel via the upper first opening or the lower first opening, the secondary air flow emerges substantially either via the upper second opening or the lower second opening and causes an air deflection of the primary air flow. Since the secondary air flow flows into the channel at a relatively high flow velocity, this secondary air flow also exits from the associated second opening. Similarly, the first and second openings may occupy lateral positions instead of upper and lower positions. Further, the first and second openings may also occupy both lower and upper positions and lateral positions. In order for air flowing in via one of the first openings not to be distributed laterally over a whole channel within a circumferential channel, air guide elements extending in the direction of flow can be provided within the channel. The spoiler elements need not be over the entire length, d. H. parallel to the flow channel, extend in the channel.

In each case a separate channel can be arranged behind the sections and the channels each have a first opening and a second opening. In such embodiments it is avoided that when supplying a secondary air flow into, for example, an upper portion of a single circumferential channel, the secondary air flow within the channel divides so much that no sufficient air flow for deflecting the primary air flow exits the upper second opening.

The flow channel may have at least four opposing sections, with two sections facing each other and behind each section a channel having a first opening connected to the air supply section and a second opening projecting into the flow channel. As a result, an air deflection in both the horizontal and in the vertical direction is possible. If the secondary air flow is correspondingly changed via the two pairs of opposing sections by means of the closing devices, then a deflection can take place both downwards and to the side or upwards as well as to the side. The air vent may have a rectangular air outlet section or a round air outlet section. The opposite sections can be used for both circular air vents and rectangular air vents.

The channels may have a decreasing cross-section, starting from the air supply section. As a result, the flow velocity of the secondary air flow is increased and the Distraction of the primary air flow further improved. In particular, the diameters of the first openings and the second openings and the air inlet area for the primary air flow in the air supply section between the sections as a function of the dimensioning of the Luftausströmers and the maximum deflection are set. The formation of the curvature and the distance of the sections to each other are to be determined depending on the dimension of the air vent and the desired maximum deflections. Likewise, the dynamic pressure is to be determined, which sets in the narrowing between the sections.

The sections may have a convex curvature. A convex curvature serves to exploit the Coanda effect, with the primary air flow or the primary air flow mixed with the secondary air flow following the curvature at the exit. In addition, a convex curvature can provide a diffuse air supply, for example, in the case of an outflowing air flow without an additional secondary air flow. The control of the amount of secondary air flow by opening and closing the first openings, which is passed through the channels of the sections back into the primary air flow, determined in addition to the deflection of the primary air flow and the distribution of the primary air flow. For example, subdividing a directional spot air stream, i. H. a directed to a certain area air flow, or a diffuse air flow are understood, which causes a large-scale air flow.

The air supply section may include at least one feed section that provides a straight airflow into the flow channel. For this purpose, the Luftzuführabschnitt and the feed section may have a same diameter. As a result, there is no deflection of the air flow in front of the devices for deflecting the air flow.

The feed section can be connected to a further second feed section, which has a cross-section which decreases in the direction of the feed section. This increases the flow velocity of the air flow and improves the functioning of the air vent by means of stronger primary and secondary air flows.

The air vent may also have a diaphragm surrounding the air outlet section, which has a curvature corresponding to the sections in the region abutting the air outlet section. As a result, the deflection of the outflowing air is not hindered by the diaphragm, but rather further supported.

The locking devices can be moved by a controller. A controller may be, for example, an electrical or electronic or mechanical control. In the case of a mechanical control, for example, closing and opening of the first openings takes place via correspondingly displaceable or movably mounted elements. For this purpose, for example, a joystick or a control wheel on the outside of the Luftausströmers be provided on a correspondingly molded housing part or on a dashboard. In further embodiments, the closing devices have electrically movable components which close and release the first openings. The opening and closing of the first openings can be made so that either certain intermediate stages are achieved or a continuous opening and closing is possible. For this purpose, the amount of secondary air fed into the channels is controlled and thus the deflection of the primary air flow is achieved. The controller can be connected to correspondingly provided electric motors, which can be controlled via a separately provided for the Luftausströmer controller or an overall control of a variety of Luftausströmern or for example a vehicle control for various components.

The closing means may comprise movably mounted adjusting elements, which are at least partially accommodated in receptacles on the housing. The control elements can release or completely close the first openings for controlling the amount of secondary air. The adjusting elements may, for example, be arranged displaceably, rotatably or pivotably in or on the housing.

Depending on the design of the air vent, each section may have a single channel or a plurality of channels. The channels may have different cross sections. For example, an air vent having a rectangular cross section may have wide channels with a rectangular cross section. In addition, however, a plurality of channels with round or angular cross-sections can be provided in a section with a very wide air vent. According to the number of channels corresponding separate control elements or a common actuator for all channels are provided for this purpose. A common control element could, for example, be designed as an annular disc with at least one opening. Through the central opening of the primary air flow flows into the flow channel. A secondary air flow is fed to a channel via the at least one opening. Depending on the position of the at least one opening can be controlled in which direction the outflowing air to be deflected. The annular disc is merely rotated to change the outflow direction. Each section has a variety of channels and separate or At least grouped control elements for the corresponding channels, so the deflection of the primary air can be done in a wide field. For this purpose, certain fanning out by alternately supplying secondary air into the primary air flow can lead to a wave-like exit of the primary air flow. Also, a so-called spot air flow can be achieved or ventilated with a single air vent two spatially separated spot areas or flowed. In round Luftausströmern with four sections, the channels of the respective sections are each distributed in a circle segment shape around the flow channel and have a corresponding cross-section in simple embodiments.

The adjusting elements can be designed to be rounded at end regions and / or transition regions projecting into the flow channel between the flow channel and the first openings. The rounded areas - end area and transition area - cause a further air deflection, wherein the air deflection is chosen depending on the design of the air vent so that turbulences are reduced.

The air outlet section may have a widening cross section. The widening cross-section of the air outlet section serves to utilize the Coanda effect, wherein the exiting air flow can flow along the surface of the air outlet section.

The air vent and the housing of the Luftausströmers can be made of a plastic and manufactured in an injection molding process. Plastics which have the required mechanical properties and can be operated over a high temperature range are suitable for this purpose.

The opposing portions may be offset from each other in further embodiments. This results in an asymmetrical arrangement of the sections along the flow channel. In these embodiments, the portions are still substantially opposite each other, but the vertices of the curved portions facing each other are offset from each other. It will continue to provide a constriction. However, the staggered arrangement causes a primary air flow to be directed upwards or downwards without deflection by secondary airflows in accordance with the spacing of the bottlenecks. This is particularly advantageous when the air vent is installed in a dashboard of a motor vehicle, wherein the dashboard has an inclination of, for example, 30 degrees. The sections are then arranged offset from each other so that they are adapted to this inclination. The air outlet portion is also inclined, since this is integrated substantially in the surface of the dashboard. The distance between the sections and the air outlet section is generally the same in the case of the air vent, so that it is thus clear how the staggered arrangement of the sections can be formed in the case of air vents.

In further embodiments, the distances of the sections to each other, the position of the sections along the flow channel and the diameters of the channels and the size of the first and second openings may be variable, for example, the amount of outflowing air, the velocity of outflowing air and the deflection to change from escaping air. This can happen, for example, via a controller that receives inputs from a user.

In addition, at the second supply portion, the supply portion or the air supply portion may be provided a closing means which is adapted to release the air supply into the flow channel, to inhibit and to regulate the amount of the supplied air. Such closing devices are for example also referred to as throttle valves. In this case, the closing device can be controlled via an adjusting means, which is arranged on an aperture surrounding the air outlet opening or on other areas of a dashboard. Furthermore, an electrical control of the closing device can also take place. The air supply for the air vent takes place via a fresh air supply from, for example, outside a building or a motor vehicle or via an air conditioner. The supplied air passes through the Luftzuführabschnitt in the air vent and is then, as described above, divided into a primary air flow and a secondary air flow. It is also possible to dispense only a primary air flow over the air outlet section when the first openings in the sections are closed. Due to the formation of the sections and the air outlet section is taking advantage of the Coanda effect, a deflection of the exiting air flow. In addition, however, an increase in the speed of the air flow is achieved by the narrowing between the sections, which also significantly improves the deflection of the primary air flow when introducing secondary air flows. The sole use of the Coanda effect has not been sufficient to provide, for example, air deflection in a motor vehicle, as was possible, for example via air guide elements, such as ventilation flaps or fins.

The Luftausströmer described herein has no mechanical air guide elements in the field of view, which is a change in the direction of cause escaping air. This also results in a visually appealing appearance and a great design freedom. In addition, a significantly smaller space is required than is necessary for conventional air vents or for the air vents described above. In addition, no components or adjusting elements are provided in the flow channel and in the air supply section, which cause turbulence and deflection of the air flow.

If electric motors are used to displace the adjusting elements, different presetting or operating modes can be represented. About actuators, the control elements can, for example, be controlled so that is directed to a window or the rear over a certain selection key or after starting a motor vehicle emerging through the air outlet area air flow in the direction of the driver or a passenger. In this case, the air flow for the driver and / or the passenger can also be directed to the upper body, the legs or the face. In further embodiments, the adjusting elements can alternately release and close the first openings via adjusting motors in order to achieve a wave movement of the outflowing air. In this case, the speed of the outflowing air flow can also be controlled, so that a strong or weak outflow is achieved.

Further advantages, features and design features will become apparent from the following description of the figures of non-limiting embodiments to be understood.

In the drawings shows:

1 a schematic sectional view through an air vent; and

2 a further schematic sectional view through an air vent.

Parts indicated by like reference characters in the figures substantially correspond to each other unless otherwise specified. In addition, it is omitted to describe components that are not essential to understanding the technical teaching disclosed herein.

In the 1 and 2 These are various illustrations of an exemplary embodiment of an air vent 10 shown, which is arranged for example in a dashboard of a motor vehicle. The air vent 10 has a housing 18 on, that has an air supply section 12 , a flow channel 14 and an air outlet section 16 having. The air supply section 12 is with a feeding section 20 connected, in turn, with a second Zuführabschnitt 22 connected is. At the second feed section 22 is a connection 42 provided, which is coupled to other facilities of an air conditioner via an air supply duct. The second feed section 22 has a towards the Zuführabschnitts 20 decreasing cross-section on. This is the flow rate of the over the connection 42 increased air intake. About the arrangement and design of the Zuführabschnitts 20 and the second feed section 22 a straight-line air flow is provided, which without turbulence over the Luftzuführabschnitt 12 the flow channel 14 is supplied. Instead of the arrangement of a Zuführabschnitts 20 and a second feed section 22 the formation of the feed channels can also be otherwise, the Zuführweg, as in 1 shown is significantly lower. In such air ducts then, for example, deflection means may be provided which have a substantially homogeneous air flow in the direction of the air supply section 12 provide.

The air vent 10 points in the area of the flow channel 14 opposite sections 30 on. The sections 30 are designed to attach to the flow channel 14 projecting and opposite sides have a convex curvature. This is in the flow channel 14 provided a bottleneck. Behind the sections 30 run channels 32 , The channels 32 are over a first opening 34 to the air supply section 12 formed open. The channels 32 have second openings 36 on that in the flow channel 14 the air outlet duct 14 are aligned facing. The second openings 36 are located in particular in the region of the flow channel 14 between the bottleneck between the sections 30 and the air outlet section 16 , The channels 32 point to the second openings 36 Towards a tapered cross-section so that one over the channels 32 in the flow channel 14 guided secondary air flow experiences an acceleration.

The channels 32 are curved, so that an air deflection of the secondary air flows in the direction of the flow channel 14 is possible. The openings 36 are so in the sections 30 provided that they pass at a certain angle to one through the flow channel 14 meet passing primary air flow. The channels 30 are trained so that they are at the in 1 shown variant of the air vent 10 over the entire width of the air vent 10 extend. 1 shows a sectional view, in addition to the side walls of the Luftausströmers 10 on the housing 18 further opposite portions are arranged or may be arranged, which also have channels which are in the flow channel 14 protrude. The trainings for the two in the 1 and 2 shown sections 30 and the described channels 32 apply in a corresponding manner for the two other opposite sections with their flow channels. Furthermore, an air vent may also be substantially round, with the sections 30 are arranged as circular segments around a circular flow channel around.

In 1 will with 40 a guide 40 referred to, along which control elements 24 in openings 26 in the case 18 are stored, can be moved. Instead of a leadership 40 can be the shifting of the control elements 24 even without in the flow channel 14 or the air supply section 12 outstanding guides 40 respectively. In general, the control elements 24 about the recordings 26 sufficiently guided, so that they can be moved in the desired manner. Instead of a leadership 40 for the control elements 24 can with 40 Also called another shot, in which a right angle to the actuators 24 arranged adjusting element is slidably mounted, which is a deflection of an air flow from the air vent 10 orthogonal to the deflection over the sections 30 and the channels 32 provides.

The control elements 24 can be controlled electrically via an electric motor or another displacement device. For this purpose, a control panel or another operating element is provided on a vehicle dashboard, which controls the movement of the adjusting elements 24 causes. A user can output or align via the air vent via manual input or voice control 10 Command issued airflow. According to the user request then the control elements 24 from the recordings 26 moved out or into the shots 26 shifted, leaving an air supply over the first openings 34 into the channels 32 is carried out. The air supply of a secondary air flow into the channels 32 controls the deflection of the primary air flow, which through the flow channel 14 passes.

In addition, the sections 30 curved in such a way that, taking advantage of the Coanda effect of the air flow along the surfaces of the sections 30 undergoes a deflection, however, the substantial deflection of the primary air flow through the secondary air flows in the channels 32 and the narrowing in the flow channel 14 between the sections 30 reached. Due to the narrowing of the flow channel 14 between the sections 30 an acceleration of the primary air flow takes place. Is in addition via one of the second openings 36 output a secondary air flow, which meets the primary air flow, so there is a stronger deflection of the primary air flow than without an acceleration of the primary air flow. In this case, the outflowing air of the secondary air flow connects to the primary air flow, so that a total air flow through the air outlet section 16 exit. In general, the flow velocity is decisive for the deflection of the primary air flow. The increase in the flow rate is at the air vent 10 by the design of the flow channel 14 achieved with the constriction. Additional funds or facilities are not required.

To provide additional swirling over the air outlet section 12 Preventing incoming air are the transitional areas 38 and the end areas 28 the control elements 24 rounded. This will ensure that on the end areas 28 impinging air either in the flow channel 14 or only partially into one of the channels 32 or to the transition areas 38 impinging air either into the channels 32 or in the flow channel 14 is directed.

2 shows a representation of the air vent 10 from 1 with a schematic representation of the different air flows. Should one via the air outlet section 16 escaping airflow downwards, as in 2 shown deflected, so is the on the second feed section 22 and the feeding section 20 supplied air flow in the air supply section 12 split, with the arrow 44 designated air flow through the flow channel 14 to be led. The one with arrow 46 designated secondary air flow is for deflecting the air flow down into the upper channel 32 over the first opening 34 directed. For this purpose, the upper actuator 24 in the recording 26 moved, leaving the first opening 34 for the upper channel 32 completely exposed. The lower first opening 34 for the lower channel 32 is via the lower actuator 24 closed, so no air in the lower channel 32 arrives. Other than the size and length of the arrows 44 and 55 indicate, takes place in the flow channel 14 between the sections 30 in the area of the constriction due to the dynamic pressure an increase in the velocity of the primary air flow. Additionally, it takes place in the upper channel 32 an acceleration of the secondary air flow, via the second opening 36 emerges and on the primary air flow occurs. The secondary air flow meets the primary air flow, whereby a deflection of the primary air flow takes place through the secondary air flow. Due to the curved formation of the sections 30 and the air outlet section 16 further support the distraction by taking advantage of the Coanda effect.

The in the 1 and 2 described training of a Luftausströmers 10 , which works with primary and secondary air flows, allows a stronger air deflection than in already known from the prior art Luftausströmern. In particular, the narrowing between the sections 30 works in combination with the channels 32 and the curved formation of the sections 30 and the air outlet section 16 an air deflection over a wide range.

Are the sections 30 additionally designed so that they continue into the flow channel 14 shifted or from the flow channel 14 can be moved, so the constriction or back pressure can be changed. This also allows the air deflection and the air velocity of the exiting air flow to change. Additionally or alternatively, the cross section of the channels can also 32 to be changed. In exemplary embodiments, the sections may 30 are either displaced or inflated via a separate supply of air, gas or fluid, wherein the constriction is increased or decreased. In addition, it is also the cross section of the channels 32 to be changed. Furthermore, it is possible in further embodiments, the sections 30 opposite areas, which also have a side wall of the channels 32 define (in the 1 and 2 gray hatched) or to inflate by means of a fluid or gas around the cross section of the channels 32 to enlarge or reduce.

In further embodiments, the sections may also 30 parallel to the flow channel 14 be displaceable, so that the cross sections of the second openings 36 be enlarged or reduced. Accordingly, then the control elements 24 designed so that these, for example, not the transition areas 38 survive.

In still further embodiments, the sections 30 asymmetric along the flow channel 14 be arranged. For example. is the top section 30 offset to the lower section 30 arranged and overlooking 1 continue to shift to the left. This arrangement may be provided to the air vent 10 to adapt to an inclined surface of a vehicle dashboard. In these embodiments, the primary air flow occurs without deflection by secondary air streams not straight, but directed upward. Accordingly, this must then be taken into account in the control of the outflowing air. For vehicles, the inclination of the dashboard is in the area of the air vents 10 usually between 10 and 35 degrees.

By using the pre-existing air supply, via the air supply section 12 can be dispensed with, separate systems and facilities. The over the air duct the air supply section 12 supplied air flow is used both as a primary air flow for the ventilation of an interior, such as a motor vehicle, as well as for deflecting the air flow itself. As a result, a significant cost savings is achieved because it can be dispensed with other components and also the already existing and needed ventilation is used for distraction. In addition, the air vent 10 simply designed and requires compared to other air vents significantly fewer components and control units.

LIST OF REFERENCE NUMBERS

10

air vents

12

air feed

14

flow channel

16

Air outlet section

18

casing

20

feeding

22

second feed section

24

actuator

26

admission

28

end

30

section

32

channel

34

first opening

36

second opening

38

Transition area

40

guide

42

connection

44

arrow

46

arrow

48

arrow

50

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Claims (12)

Air vents, comprising a housing ( 18 ) with an air supply section ( 12 ), a flow channel ( 14 ) and an air outlet section ( 16 ), wherein the flow channel ( 14 ) at least two opposing sections ( 30 ), which the flow channel ( 14 ) starting from the air supply section ( 12 ) and starting from the air outlet section ( 16 ), leaving behind the sections ( 30 ) at least one channel ( 32 ) is arranged, which via first openings ( 34 ) with the air supply section ( 12 ) and second openings ( 36 ), wherein the second openings ( 36 ) in the flow channel ( 14 ) and closing means are arranged, via which the amount of the first openings ( 34 ) in the at least one channel ( 32 ) supplied air by opening and closing the first openings ( 34 ) is controllable. Air vents according to claim 1, wherein behind the sections ( 30 ) each have a separate channel ( 32 ), and the channels ( 32 ) each have a first opening ( 34 ) and a second opening ( 36 ) exhibit. Air vents according to claim 1 or 2, wherein the flow channel ( 14 ) at least four opposing sections ( 30 ) and has two sections each ( 30 ) and behind each section ( 30 ) a channel ( 32 ) with one with the Luftzuführabschnitt ( 12 ) connected first opening ( 34 ) and one in the flow channel ( 14 ) projecting second opening ( 36 ) is arranged. Air vents according to one of claims 1 to 3, wherein the channels ( 32 ) starting from the air supply section ( 12 ) have a decreasing cross-section. Air vents according to one of claims 1 to 4, wherein the sections ( 30 ) have a convex curvature. Air vents according to one of claims 1 to 5, wherein the air supply section ( 12 ) at least one feed section ( 20 ) having a straight air flow into the flow channel ( 14 ). Air vent according to claim 6, wherein the feed section ( 20 ) with a further second feed section ( 22 ), which faces towards the feed section ( 20 ) has decreasing cross section. Air vent according to one of claims 1 to 7, wherein the closing means are movable via a controller. Air vents according to one of claims 1 to 8, wherein the closing means movably mounted adjusting elements ( 24 ) in pictures ( 26 ) on the housing ( 18 ) are at least partially included. Air vents according to one of claims 1 to 9, wherein the adjusting elements ( 24 ) in the flow channel ( 14 ) end portions ( 28 ) and / or transition areas ( 38 ) at the sections ( 30 ) between the flow channel ( 14 ) and the first openings ( 34 ) are rounded. Air vents according to one of claims 1 to 10, wherein the air outlet section ( 16 ) has a widening cross-section. Air vents according to one of claims 1 to 11, wherein the opposite sections ( 30 ) are offset from one another.

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