Air diffuser

The invention relates to a connected with an air duct of a ventilation device The air vent, in particular for the interior of a vehicle, with a rotatable about an axis and having passages provided air discharge means.

Such air vents are made of the use in vehicles of various kinds known. They allow entry of fresh, heating and / or cooling air into a Vehicle interior to a vehicle occupant and / or upgraded Good pleasant to create and desirable climate. Simultaneously with the air vents an appealing visual design of the air outlet areas in a or downstream of the interior trim or the instrument panel of a vehicle reaches extending air line.

There are, for. Example, in a center console or in the side regions of a dashboard arranged for a motor vehicle air vents for ventilating the passenger compartment known, the air vents to adjust a planned inflow into the interior of hand are adjustable in a desired position. The Air vents are designed zylindertörmig and laterally from the end of a Air duct enclosed. An adjustment is made by pivoting about the cylinder axis. In their respective air outlet areas are the known air vent provided with parallel lamellae which a directivity the exiting air flow exercise.

Moreover, a device for introducing conditioned air into the passenger compartment known a motor vehicle, the one below a windshield transversely of the vehicle body extending chamber having that as a distributor chamber serves for conditioned air. A wall of this chamber, which on its own extending the windshield in the direction of the passenger compartment, has numerous, acting as air vents openings provided. This wall may, for. Example, a its top cover of the instrument panel. can with such a device the entire passenger compartment are extensively supplied with conditioned air. however is for a considerable space necessary and only with large apparatus Structure, it is possible for certain areas of this apertured wall fully close when individual passengers, for. example, the passenger, the air flow find unpleasant. Completely impossible it is, with the known device to produce a strong and / or directed air current as z. B. for rapid supply of fresh air is desired.

The invention is based on the object of an air vent, in particular for to create the interior of a vehicle, which optionally a directional outflow a strong airflow or a diffused leakage of a weak Airstream allows and apparatus no additional assembly and / or Effort entails.

This object is achieved in that the air discharge means a first provided with passages subregion for a diffuse air outlet and a second provided with passages subregion for a large area having free air outlet and that through a rotation of the air outlet element either the first or the second provided with passages subregion effective can be brought into an air stream.

Due to such a configuration of the air outlet, it is not necessary to separate Outlets for a directed air outlet of high flow rates and on the diffuse air outlet with only low flow rate be provided in the vehicle interior. Without further need for space and a large number of additional components can in this way a draft-free ventilation of the vehicle interior can be achieved.

The air vents may advantageously require very little space when the Air discharge means by about 90 ° is rotatable. It can then between the two End positions "Free air outlet" and "Diffuser air outlet '' a particularly short adjustment path are pivoted. The operation, however, simplified when the air outlet element by more than 360 ° is rotatable. In this case, the air discharge means are moved in any direction, alternately accommodated portions for a free or a diffuse air outlet into the air stream will.

Preferably, the air outlet element has mutually parallel, effective in the Air flow which can be brought on air conducting. With this air guidance can be the directed air flow in a desired spatial area. The directivity is advantageously increased when the air discharge means of the first air conducting in approximately vertical, parallel to one another, can be brought effectively into the air flow second air guidance surfaces having. A channeled in such a way air flow of passengers perceived mainly as refreshing. These air guidance, both in the subregion for a diffuse air outlet - to mitigate the scattering effect - And preferably in the second provided with passages subregion for be located a large area free air outlet. Such is to achieve a directed air flow of high flow velocity of particular interest. Regardless of a set preferential direction and the wishes of the Vehicle occupant according to in one embodiment of the invention, first air conducting and / or the second air conducting to an opening in approximately Longitudinal direction of the air guidance extending axis be pivotable. pivoting is made particularly easy, when the first air guidance surfaces and / or the second air guidance are interconnected by a coupling rod.

In order to influence the outflow of the air outlet element as a whole, it is of particular advantage when the air discharge element with a handling projection and / or a Handhabungsausnehmung is provided. Such Handhabungsausnehmung could z. B. an opening, a recess or a blind hole in the be surface of the air outlet element, in which one or more fingers of a Operator can be introduced. It is advantageous if the handling projection a handle, a hand lever or a thumb wheel is. Thus, the adjustment the air outlet element particularly easy to carry out.

Preferably, the air vent has an air outlet element halterndes housing on. On the housing z. B. can easily an air duct of the ventilation device a vehicle are connected. Moreover, it is possible to prefabricate the air vents as an independent assembly, in final assembly only the housing z. B. in an instrument panel or center console use of a vehicle.

A healthy line of air from the air duct of the ventilation device in the air discharge means in can be achieved if at the air duct -facing side of the air vent is preferably disposed an air guiding element is. Particularly simple is the structure of the air vent when the spoiler is fixed in the housing. With the spoiler element can be both an air outlet in unwanted edge areas of the air outlet and a through one occurring at the air outlet element dynamic pressure caused self-adjustment the air outlet element can be prevented.

In order to seal the air discharge element relative to the housing and thus in this Range to avoid undesired air outlet is between the air discharge means and the housing advantageously arranged a sealing element. Preferably this sealing element is an O-ring, for. example, an O-ring, or a Flat gasket, for. Example, a felt pad.

The first provided with passages subregion for a diffuse air outlet has in a particularly simple manner, a plurality of air passage openings. On designed in this way air discharge means is easily and more inexpensively. It is advantageous if this portion a fine mesh having grid. This can be either separately in the air discharge element be or be made with this a single component forming used. Is the grid a plastic, wire or fabric mesh, so it offers the particular Advantage in nearly any configuration, large amounts and inexpensively to be available or on the market.

To the passenger a desire contemporary possible adjustment of the air outlet to allow the air discharge means preferably comprises a third Portion without apertures on which by turning the air outlet member is effectively moved into the air stream. Thereby, it is additionally possible to provide a air outflow from an air vent to prevent entirely. Alternatively and in the air supply line to the air outlet a separate closure flap be arranged, which, for. example, be operated by an additional lever and the air conduit completely shut capable.

Depending mainly of creative desires possessing the air discharge means preferably approximately the shape of a cylinder or a part thereof or approximately the shape of a sphere or a part thereof. A ball or a ball part has to special advantage that during storage of the same in a dome, the air outlet direction can be freely set within wide limits. Depending on desired Luftverteileffekten and from the installation there can also be advantageous be when the air outlet element has approximately the shape of a cone or a portion it possesses.

The angle of rotation between the air outlet areas is particularly low and the Air vents particularly simple in construction when the first with passages provided Subregion for a diffuse air outlet and the second with passages provided partial area for a large area free air outlet by about 90 ° to the Axis of the air outlet element are offset from each other.

an air vent especially effective works according to the present invention, however, when the air discharge means two first provided with passages subregions for a diffuse air outlet and two second passages provided with portions has a large area free air outlet respectively disposed opposite are. In this case, in each case - depending on whether a diffuse or a free outflow is selected - with radial air supply to the air discharge means two identical portions successively flows through. This will on the one hand a particularly good air turbulence in the case of diffuse outflow and the other part a completely unhindered passage of air created in the case of the free outflow. When diffuse leakage while the free subareas are with flow through, whereas the free outflow which arranged with in border areas Diffuse passages provided subregions not obstruct airflow. Especially It is also favorable that such air discharge means a non-impact may permit rotation more than 360 °, so that in order to use only necessary is to twist the air discharge means, without note the direction of rotation to have to. The sections for a large area free air outlet and a diffuse air outlet are thus brought alternately into the air stream.

In this context and to the largest possible cross section to achieve, it is particularly advantageous if the first is provided with openings Subareas for a diffuse air outlet in each case directly to the second with Passages provided portions adjacent to a large area free air outlet. Preferably, the first part provided with passages areas for a diffuse air outlet spherical or cylindrical segments of the air outlet element Air passage openings. By consequent extension of the length Openings of the air flow is particularly strongly reassured. Preferably, the air passage openings are arranged in spherical or cylindrical segments so that they equipped with fully accommodated roughly in the airflow first with passages Some areas for a diffuse air exit approximately in the direction of the air stream extend. In this manner, in particular the manufacture of the air outlet element to simplify the injection molding process.

Are among the first provided with passages subregions for a diffuse Air outlet parallel to the airflow parallel roughly air guidance arranged, so can therefore be directed targeted the discharged air flow. It is particularly favorable when the air guidance to approximately symmetrical the axis of the air outlet element are arranged. Thus, the direction of the Air outlet and the air turbulence regardless of which of the two subregions for a diffuse air outlet or the two sections for a large area free air outlet forms the final beam area. Furthermore, it is especially advantageous if the air guidance surfaces each pivotable about an axis are, the axes brought out at approximately completely out of the air stream first provided with passages subregions for a diffuse air outlet in are arranged approximately perpendicular to the air stream, whereby the direction and / or can additionally influence swirling of the exiting air flow. Preferably supporting the opposing first provided with passages subregions the air conducting each in their end regions. The air outlet element has then a particularly compact design combined with high mechanical strength on.

The invention is illustrated below with reference to the accompanying drawings in Embodiments explained in more detail. It shows<dl tsize="7"><dt>Fig. 1</dt><dd>an air vent according to the invention in sectional side view in a position for free air outlet,</dd><dt>FIG. 2</dt><dd>an air vent according to FIG. 1 in perspective view,</dd><dt>Fig. 3</dt><dd>an air vent according to FIG. 1 in a sectional side view in a Position for diffuse air outlet,</dd><dt>Fig. 4</dt><dd>an air vent of FIG. 3 in a perspective view,</dd><dt>Fig. 5</dt><dd>a further embodiment of an air vent according to the invention in a perspective view in a position for free air outlet,</dd><dt>Fig. 6</dt><dd>an air vent according to FIG. 5 in a position for diffuse air outlet, </dd><dt>Fig. 7</dt><dd>a further embodiment of an air exit element for an inventive Air vents in a perspective view,</dd><dt>Fig. 8</dt><dd>the air discharge means shown in FIG. 7 in a first side view and</dd><dt>Fig. 9</dt><dd>the air outlet element according to Fig. 7 in a second side view.</dd></dl>

The illustrated in Fig. 1 to 4 air outlet 1 comprises a rotatable about an axis 3 Air discharge means 4, which is designed as a roller die. The air vent 1 can, for. Example, in a dashboard or a center console of a motor vehicle installed and be provided for aeration of a passenger compartment. In Fig. 3 and 4 the air discharge means 4 in a diffuse air outlet enabling position, whereas the in the position shown in Fig. 1 and 2 Air outlet element 4 a large area of ​​free air discharge can take place.

Accordingly, either (Fig. 3 and 4), a first having a plurality of Air passage openings 18 PROVIDED portion 5 for a diffuse air outlet or (Fig. 1 and 2) a second portion 6 for a large area free air outlet effectively introduced into an air stream. 7 By means of a in a housing 15 of the Air vent 1 arranged air guide 14, the air flowing 7 the air discharge means 4 is supplied. Penetration inflowing air into a Room 28 is between the housing 15 and air discharge means 4 with the air guide 14 largely prevented. One is constructive in the space 28 backpressure might otherwise without influence of an external actuating force, the air discharge means 4 twist unintentionally.

An additionally inserted between the housing 15 and the air outlet element 4, in an circumferential groove of the element 4 held circular seal 17 also avoids last parasitic air streams. Alternatively, between the lateral housing wall 27 and the side surfaces of the element 4 a gasket, eg. as a felt seal, be arranged.

The housing 15 is a - not shown - air line a Belüftungsvorichtung a vehicle. For a complete closure of the air vent 1, this is either a third portion which is not provided with passages is provided, having that portion also effective in the airflow can be brought, or in the air (to) line, a separately-to-use butterfly valve be provided. but it is also conceivable that a complete closing 1 of the air vent is not provided, so that depending on the position of the Air outlet element 4 constantly at least a diffuse air flow to the passenger compartment is supplied. An adjustment of the air outlet element 4 is made by actuating an integrally formed handle. 13

In the region 6 for a large area free air outlet of the air outlet element 4 are first air conducting 8 (here arranged approximately vertically) and this vertical (Here approximately horizontally arranged) 9 available air guidance. To the influence the direction of the outflowing air individual wishes can, the air conducting 9 respectively about axes 11 and the air guidance 8 respectively about axes 10 pivotable with an adjustment knob 12th

A air vent 1 with a ball nozzle, FIGS. 6 (in one position for a diffuse air outlet) and Fig. 5 (in one position for a large area free air outlet). In casing 15 air outlet member 4 is pivotally supported about axis 3rd The axle 3 extends in the illustrated embodiment, approximately vertically, but could also substantially horizontally or - depending on the mountability of Storage locations in the housing 15 and the arrangement of the sections 5 a diffuse air outlet and 6 for a free air outlet on the air discharge means be oriented in virtually any direction in space -. 4 twisting the element 4 is carried out by engagement in openings of the portion 6 or in a Handhabungsausnehmung 20th

Another cylindrical air outlet member 4, Figs. 7 to 9. Such Element could be incorporated, for. Example, in a housing 15 as shown in Fig. 1 to 4. The element 4-9 comprises two side windows 25, 26 of FIG. 7 with integrally formed bearing journals 21, 22 for storage in the housing is not shown here. Two opposing cylinder segments 19, 19 connect the side windows 25, 26 and have a plurality of air passage openings 18. The cylinder segments 19, 19a form portions 5, 5a, for a diffuse air outlet, at Portions 6, 6a adjoin both sides immediately for a free air outlet. In The space between the cylinder segments 19, 19 are air conducting 8 Pin 23, 24 inserted at their longitudinal ends. are with the pins 23, 24 the fins 8 rotatably mounted in the cylinder segments 19, 19, a coupling rod 16 ensures a parallel pivoting. The air discharge means 4 FIG. 7 to 9 is characterized by a very large flow cross-section out. The core area of ​​the cylindrical member 4 with the lamellar air guidance 8 is always flowing through the air. In case of diffuse outflow two diffusion regions 5, 5a flow through, which is especially a good air turbulence leads. It is also conceivable, in the air outlet element 4 provide 8 no air guidance, but these are either omitted entirely or it is to be ventilated as a fixed or movable slats before the item 4, the right facing room, to arrange such. as connected to the not shown Housing.