WO2014013069A1 - Air-conditioning system with an air-deflecting element - Google Patents

Description

 Air conditioning with an air deflection

description

Technical area

The invention relates to an air conditioning system with an air deflection element, in particular according to the preamble of claim 1.

State of the art

In air conditioning systems, in particular air conditioning systems for motor vehicles, it is often necessary due to the installation situation in the vehicle and the space available, as well as through the structural design of the air conditioning itself air currents directed around obstacles around. Obstacles can be, for example, components that project into the air flow path. These obstacles are regularly formed by housing contours, air duct walls or ventilation flaps.

The airflow will be guided around these obstacles to ensure the function of the air conditioner. In the prior art, these deflection points are often realized by edged, not aerodynamically optimized forms, these lead to flow separation and turbulence of the air flow. Along with the turbulence is the at least partial increase in the flow velocity. Increased flow velocities can lead to acoustic impairments, which can also be perceived by the vehicle occupant. In addition, due to the increased speed and the turbulences, an increased pressure drop occurs, which negatively influences the air flow.

When deflecting the air flow by up to 80 °, these negative effects occur particularly strongly.

In the unpublished patent application DE10 2011 005 181 .3 of the Applicant a solution is given for this purpose, which consists of a combination of a Luftumlenkelementes and a flap. In this case, the air deflecting element is approximately perpendicular to the air flow direction, which in an embodiment shown flows out of a heating element. The Luftumlenkelement has at its apex a rounding, which merges into a parabolic extension of the air guide element. Just below the apex of the rounding of the air guide element, a rotation axis of a flap is arranged. By means of this flap is a channel, which forms after the deflection of the air around the air-guiding element between the air-guiding element and a housing wall opposite the air-guiding element, can be closed. In addition to the deflection function, this solution also offers the option of closing the duct after the deflection by means of the ventilation flap. The deflection function is coupled here with a flap function.

A disadvantage of the device according to the prior art is in particular the complex structure of the flap, which leads to a complex and expensive production. Presentation of the invention, task, solution. advantages

Therefore, it is the object of the present invention to provide an air conditioning system with an air deflection, which allows a deflection of air flow by up to 180 °. The occurring pressure losses and acoustic impairments should be reduced. In addition, the invention provides a flap which allows closure and release of an air passage.

The object of the present invention is achieved with respect to the air conditioner with an air deflection by an air conditioner with the features of claim 1.

An embodiment of the invention relates to an air conditioning system having an air deflection element in an air duct, the air deflection element having an air guide element and a flap, wherein the air guide element extends substantially flat as a partition wall in the air duct, and extends the air guide element at its free end region by the outer contour of the flap is, wherein the outer contour of the flap is formed by a first leg and a second leg, the first leg of the flap is the free end portion of the spoiler, in the opened state of the flap, facing, wherein the second leg of the flap, in the open state the flap, is aligned substantially parallel to the air guide element.

The air guide element, which extends as a partition wall surface, advantageously forms a wall within an air conditioner, which flows past an air flow. By adjoining the air guide contour of the flap, the air guide is extended. The spoiler together with the flap forms a U-shaped wall, along which an air flow can flow and can be deflected in its flow direction by up to 180 °. Due to the shape of the flap, a, compared to the air guide alone, aerodynamically favorable Äußenkontur the Luftumlenkelementes generated. There are lower flow separations.

Furthermore, it is advantageous if the air guide element is fork-shaped at its free end region, with a first wall and a second wall, wherein the end region is open in the direction of the flap, wherein the first leg of the flap engages in the fork-shaped end region of the air guide element , As a result, an improved seal is achieved. It is thus possible that, in the open position as well as in the closed position of the flap, one of the legs of the flap always rests on the air guiding element. This reduces, especially in the closed state of the flap, the occurrence of leakage air, which could flow unintentionally through the joint between the air guide element and the flap.

It is also expedient if the air guide element forms a flow channel with a housing wall of the air conditioning system, wherein the housing wall is arranged on the side of the second leg of the flap facing away from the air guide element.

The trained flow channel serves to continue an air flow within the air conditioner. The flow channel is arranged so that it can be closed by the flap. According to a further advantageous embodiment, the flap is rotatably mounted and, in a first position of the flap, releases the flow channel and closes the flow channel in a second position of the flap.

Due to the rotatable design of the flap and its described arrangement, a targeted opening and closing of the flow channel is possible. In conjunction with the fork-shaped design of the end region of the air duct described above. tetementes and the intervention of a Schenkeis the flap in these, a tight closure of the flow channel can be achieved.

Furthermore, it is preferable if the first leg of the flap rests against the first wall of the fork-shaped end region of the air guide element in the opened state of the flap and / or the first leg of the flap rests against the second wall of the fork-shaped end region of the air guide element in the closed state of the flap , This ensures that both in the open state of the flap, as well as in the closed state of the flap, the occurrence of leakage air between the air guide element and the flap is reduced or avoided.

Furthermore, it is advantageous if the second leg of the flap rests against the housing wall of the air conditioner in the closed state of the flap.

This makes it possible to close the flow channel with the flap. It can thus be interrupted, the air flow flowing through the flow channel.

It is also preferable if the second leg of the flap in the closed state of the flap rests against a shoulder of the housing wall or engages in a recess of the housing wall. By concern with a paragraph of the housing wall or the intervention in a recess, the sealing effect of the flap can be further increased.

Moreover, it is advantageous if the spoiler element forms a U-shaped contour with the flap in the opened state of the flap.

By means of this U-shaped contour, an air flow can advantageously be deflected, since the radius resulting from the U-shaped contour, in contrast to a non-deflected radius, is deflected. rounded edge promotes the non-emergence of stall and non-perfused so-called Totwasserstellen.

The object of the flap is achieved with the features of claim 9. An embodiment relates to a flap for an air conditioner, wherein the flap is formed by a two-legged base body having two opposing receptacles for rotatable assembly, wherein the first leg to the second leg is arranged at a predetermined angle, and the two legs merge into one another and form a common outer contour.

Through the opposite recordings, the flap can be rotatably mounted in the air conditioner. The construction of the flap of two legs, which are at an angle to each other, allows a particularly simple production, in an advantageous embodiment, the two legs can be about the same length, whereby the installation of the flap could be independent of direction.

In another advantageous embodiment, the two taverns! also be different in length. Particularly due to a longer leg extending into the flow channel, a flow characterized by a small number of flow breaks and dead water spots can be achieved.

Furthermore, it is advantageous if the flap has at its outer edge an at least partially encircling elastically formed sealing lip profile.

By this at least partially encircling elastic sealing lip profile, the sealing effect of the flap can be increased relative to a surrounding air duct. In an advantageous embodiment, the sealing lip profile is executed completely circumferential, so that all adjacent to an air duct edges of the flap also increase the sealing effect.

It is also expedient for the first leg and / or the second leg to have a bulge which has a substantially parabolic or convex shape when viewed in cross-section perpendicular to the axis of rotation.

By the bulge in one or both legs, a particularly advantageous contour of the flap can be achieved. As already described above, a radius of the contour, as it is present for example in a parabolic or convex shape, promotes a flow which is characterized by few stalls and a small number of dead water spots.

In a further advantageous embodiment, the flap is stiffened in the region of the bulge by a rib structure.

By a rib structure, the flap can be additionally stiffened without a significantly increased material usage. This can be advantageous both for the vibration properties of the flap in the air flow and for the sealing effect of the flap.

Furthermore, it is advantageous if the second leg has a rib in a flat region adjacent to the bulge. One or more such additional ribs may further increase the strength of the flap. This also allows the use of lower material thicknesses with constant strength of the flap.

Advantageous developments of the present invention are described in the subclaims and the following description of the figures. Brief description of the drawings

In the following the invention will be explained in detail by means of an embodiment with reference to the drawing. 1 shows the arrangement of an ^' air deflection element, which has a Luftieitelement and a flap, in the left part of the figure, the flap is shown in the open position, in the right part of the figure, the flap is shown in the closed position, Fig. 2 is a plan view of the second leg of the flap,

3 is a side view of a flap, while a schematic sketch of the flap is shown in the left part, wherein in the right part of a CAD image of the flap is shown,

4 is a perspective view of a flap as a CAD model, wherein the overflowed by an air flow side of the flap is shown, and

Fig. 5 is a perspective view of a flap as a CAD model, wherein the rear side of the flap is shown.

PREFERRED EMBODIMENT OF THE INVENTION FIG. 1 shows two illustrations of an air deflection element 1 according to the invention, which has an air flow element 2 and a flap 7. In the left part of Figure 1, the flap 7 is shown in the open state. In the right part of Figure 1, the flap 7 is shown in the closed state. Adjacent to the Luftumlenkelement 1, a housing wall 9 is shown, which is disposed within an air conditioner and together with the air guide element 2 forms a flow channel 1 1,

The air guide element 2 is fork-shaped in its free end region. This results in a fork-shaped region 3 which has two walls 4, 5.

The flap 7 is formed from two legs 10a, 10b. These two legs 10a, 10b merge into one another and form a U-shaped outer contour 12 of the flap 7. In the illustration shown in FIG. 1, only the outer contour 12 of the flap 7 is shown. The two legs 10a, 10b form the outer contour and are therefore indicated in both partial figures of FIG.

The flap 7 is rotatably supported along a rotation axis 6. The axis of rotation 6 is arranged above the fork-shaped region 3 of the air guide element 2.

The housing wall 9 is similar to the air guide 2 formed as a partition within the air conditioning. It has in FIG. 1 a recess 13 into which the second leg 10b of the flap 7 can engage in the closed state,

In alternative embodiments, a shoulder can also be provided instead of the recess 13. The second leg 10b of the flap 7 would then rest correspondingly in the closed state of the flap 7 on the shoulder of the housing wall 9. Furthermore, a housing wall is providable, which has no recess and no paragraph. In this case, the second leg 10b of the flap 7 would abut against the surface of the housing wall 9 in the closed state of the flap 7.

By the rotation of the flap 7 about the axis of rotation 6 of the flow channel 1 1 is released in a first position of the flap 7 and closed in a second position of the flap 7. This second position of the flap 7 is shown in the right part of Figure 1. At the end portions of the first leg 10a and the second leg 10b sealing lips 8a, 8b are arranged. These sealing lips 8a, 8b increase the sealing effect of the flap 7 both in the open state, as well as in the closed state. For this purpose, one or both sealing lips 8a, 8b are applied to parts of the air guiding element 2 and / or the housing wall 9. in the left part of Figure 1, showing the open state of the flap 7, the sealing lip 8a, which is arranged on the first leg 10a of the flap 7, is located on the first wall 4 of the fork-shaped end portion 3. The leg 10a with its extension of the sealing lip 8a thereby engages in the fork-shaped end region 3 of the air guide element 2.

The sealing lip 8a thus provides a connection between the first leg 10a and the air guide element 2. This connection prevents between see the flap 7 and the air guide 2, a leakage air flow is formed, which flows around the flap 7 unintentionally and so a parallel leakage air flow to the air flow can be created _» wherein the main air flow along the air guide element 2 and flows through the flap 7 in the flow channel 1 1. In the left part of Figure 1, the second leg 10b of the flap 7 is aligned freely in the flow channel 1 1. The sealing lip 8b, which is arranged at the end region of the second leg 10b, thus also protrudes freely into the flow channel 11.

In the right part of Figure 1, the flap 7 is rotated about its axis of rotation 6 so that the flow channel 1 1 is closed by the flap 7. In this case, the sealing lip 8a of the first leg bears against the second wall 5 of the fork-shaped end region 3. The sealing lip 8b engages in the interior of the recess 13. Thus, the flow channel 1 1 is closed and sealed by the legs 10a, 10b of the flap 7 and by the sealing lips 8a, 8b. The sealing lips 8a, 8b in this case increase the sealing effect of the flap 7 in comparison to a flap without Dichtlipperi. By the installation of the sealing lip 8a on the second wall 5 of the fork-shaped end portion is additionally prevented that a leakage air flow between the flap 7 and the air guide element 2 is formed. The outer contour 12 of the flap 7 forms a continuation of the air guide element 2 and thus forms a lateral boundary for an air flow, which flows along the air guide element 2 in the flow channel 1 1 and thereby deflected in its flow direction. Due to the parabolic or convex bulge of the flap 7 and in particular of the second leg 10b, the air flow is deflected particularly advantageous, since the formation of the outer contour 12, the occurrence and emergence of stalls and so-called Totwasserstellen in which no air flow occurs minimized. More detailed comments on the shape of the outer contour 12 of the flap 7 follow in the other figures.

The air guide element 2 in conjunction with the flap 7 together forms a U-shaped outer contour 14, around which the air flow flows around. FIG. 2 shows a plan view of the second limb 24 of the flap 7. The sealing lip 22, which extends along the lower end region of the second limb 24, can be seen in particular. This sealing lip 22 is marked in the figure 1 as a sealing lip 8b and provides for the additional sealing of the flap 7 against the housing wall. 9

In addition, a laterally on the edge of the second leg 24 extending sealing lip 21 is shown. The sealing lip 21 seals the flap 7 laterally to further housing parts of the air conditioner in order to reduce the occurrence of leakage air flows around the flap 7. The flap 7 is constructed mirror-symmetrically. In the figure 2, the flap 7 is shown only up to one, they divide in width, the center plane.

The flap 7, in each case lying on its lateral end region, a receiving device 20. About this receiving device 20, the flap 7 is rotatably mounted in the housing of the air conditioner. The imaginary connection of the opposing receiving devices 20 forms the axis of rotation 6, about which the flap 7 is rotatable.

The region of the flap 7 identified by the reference numeral 23 represents a bulge 23 of the second limb 24. At the right and at the left lateral end region of the flap 7, the second limb 24 essentially has a flat region 28. This planar region 28 continues continuously, rising with the distance to the lateral end region, into the bulge 23. By the bulge 23, which essentially forms the central region of the flap 7, the outer contour 25 of the flap 7 is formed. This bulge 23 thus contributes significantly to the formation of the outer contour 25 of the flap 7 and thus to guide the air flow around the flap 7 at. FIG. 3 shows two lateral views of the flap 7. The left part shows a schematic representation of the flap 7, which corresponds to a side view of the flap 7 already shown in FIG. In the right part of FIG. 3, a CAD model of a flap 7 according to the invention is shown. In the left part of Figure 3 can be seen in the side view, as the area of the curvature 23 stands out from the flat portion 28. Likewise, it is particularly easy to see in the side view, as formed by the curvature 23, the outer contour 25 of the flap 7. The outer contour of the first leg 26 and the outer contour 25 of the second leg 24 together form a parabolic or convex outwardly curved region, which can be flowed around by an air flow in the air conditioner. The first leg 26, and the second leg 24 are arranged at a fixed angle to each other. Advantageously, this angle is greater than 10 degrees. In the illustrations of FIGS. 1 to 5, the second leg 24, 10b, 35 is longer than the first leg 26, 10a, 34, respectively. In advantageous weathered embodiments, the two legs can also be designed to run the same length.

In the right part of Figure 3, a CAD model of a flap 7 according to the invention is shown in side view. The view in the right part of FIG. 3 additionally shows a rib 29 which, adjacent to the bulge 23, extends on the flat area 28 of the second limb 24.

FIG. 4 shows a perspective view of the CAD model of a flap 7 according to the invention, as already shown in the right-hand part of FIG. 3 in the side view. The observer's gaze is directed to the side of the flap 7, which in the installed state flows around an air stream.

The curvature 23, which is arranged in the central region of the flap 7, rises from the respective adjacent adjacent left and right flat areas 28. Below the bulge 23, the second leg 24 has a further planar portion 30 on. At this closes down towards the sealing lip 22 at. The sides of the flat areas 28 are each followed by Dichtitppen 21, which seal the flap 7 to the side in addition to housing parts of the air conditioner.

Starting from the, between the two receiving devices 20 imaginary, axis of rotation 6 extends left and right, adjacent to the bulge 23, in each case a rib 29, which tapers down towards the end portion of the second leg 24. These ribs 29 also contribute to the stiffening of the flap 7. Also, a plurality of ribs 29 on the planar region 28 may be provided in alternative embodiments. In particular, FIG. 4 also shows the symmetrical configuration of the flap 7, as already mentioned in FIG.

Depending on the choice of material, it may be necessary to provide further reinforcing ribs 29 on the flap 7.

In alternative embodiments according to the invention, the bulge 23 can also be provided over the entire width of the flap 7. FIG. 5 shows the rear view of the flap 7. It can be seen that _" in particular in the region of the bulge 23, the flap 7 is reinforced by an additional rib structure 31. The area of Auswöibung 23 is not designed as solid material. The wall which forms the bulge 23 is reinforced by the internal rib structure 31 in such a way that it is dimensionally stable.

In the rear view of the flap 7, the first leg 26 and a sealing lip 27 can be seen. This extends from the one receiving device 20 to the opposite, second receiving device 20. The rib structure 31 is formed in Figure 5 by a wave-shaped zig-zag pattern. Deviating arrangements of the rib structure 31 can also be provided in alternative embodiments. Thus, the ribs can also run parallel to the outer edges of the flap. The receiving devices 20 each have in their center a recess into which a storage element, which is arranged on a housing wall of an air conditioner, can be inserted. In extension of the recess in the receiving device 20, the second leg 24 of the flap 7 has a recess which serves as a receiving volume for the inserted storage element. The sealing lips shown in Figures 1 to 5 have a straight outer contour throughout. However, it is also providable that the sealing lips have a rounded outer contour. In this way, the sealing effect of the sealing lips can be influenced. Also, a different number of sealing lips can be provided for alternative embodiments.

Claims

claims 1. Air conditioning system with an air deflecting element (1) in an air duct, wherein the air deflecting element (1) has an air guide element (2) and a flap (7), wherein the air guide element (2) extends substantially flat as a partition in the air duct, characterized in that the air-guiding element (2) is extended at its free end region by the outer contour (12, 25) of the flap (7), wherein the outer contour (12, 25) of the flap (7) is defined by a first leg (10a, 26) and a second leg (10b, 24) is formed, the first leg (10a, 26) of the flap (7) faces the free end region of the air guide element (2) in the opened state of the flap (7), wherein the second leg (10b, 24) of the flap (7) in the opened state of the flap (7) is oriented substantially parallel to the air guide element (2), 2. The air conditioner according to claim 1, characterized in _"that the air guide element (2) is formed at its free end a fork-shaped (3), having a first wall (4, 5} and a second wall (5, 4), wherein the end portion in Direction to the flap (7) is open, wherein the first leg (10a, 26) of the flap (7) engages in the fork-shaped end region (3) of the air guide element (2). 3. The air conditioner according to one of the preceding claims, characterized in that the air guide element (2) with a housing wall (9) of the air conditioning a flow channel (1 1) is formed, wherein the housing wall (9) on the air guide element (2) facing away from the second leg (10b, 24) of the flap (7) is arranged, 4. The air conditioner according to claim 3, characterized in that the flap (7) is rotatably mounted and in a first position of the flap (7) the flow channel (1 1) releases and in a second position of the flap (7) the flow channel (1 1) closes. 5. The air conditioner according to claim 3 or 4, characterized in that the first leg (10a, 26) of the flap (7) in the open state of the flap {7) on the first wall (4) of the fork-shaped end portion (3) of the air 2) and / or the first limb (10a, 26) of the flap (7) rests against the second wall (5) of the fork-shaped end region (3) of the air guiding element (2) in the closed state of the flap (7). 6. The air conditioner according to one of claims 3 to 5, characterized in that the second leg (10b, 24) of the flap (7) rests in the closed state of the flap (7) on the housing wall (9) of the air conditioner. 7. The air conditioner according to one of claims 3 to 5, characterized in that the second leg (10b, 24) of the flap (7) in the closed state of the flap (7) rests against a shoulder of the housing wall (9) or in a recess of Housing wall (9) engages. 8. The air conditioner according to one of the preceding claims, characterized in that the air guide element (2) with the flap (7) in the open state of the flap (7) forms a U-shaped contour (14). 9. A door (7) for an air conditioner, wherein the flap (7) is formed by a two-legged main body having two opposing receptacles (20) for rotatable assembly, wherein the first leg (10a, 26) to the second leg (10b, 24) is arranged at a predeterminable angle, characterized in that the two legs (10a, 10b, 24, 26) merge into one another and form a common outer contour (12, 25). 10. flap (7) for an air conditioner according to claim 9, characterized in that the flap (7) has at its outer edge an at least partially encircling elastically formed sealing lips profile. 1 1. Flap (7) for an air conditioner according to any one of claims 9 or 10, characterized in that the first leg (10a, 26) and / or the second leg (10b, 24) has a bulge (23) which in cross-section perpendicular to a Connecting line between the receiving devices (20) viewed substantially has a parabolic or convex shape. 12. flap (7) for an air conditioner according to claim 1 1, characterized in that the region of the bulge (23) of the flap by a rib structure (31) is stiffened. 13. flap (7) for an air conditioner according to one of claims 1 1 or 12, characterized in that the second leg (10 b, 24) in a bulge (23) adjacent planar region (28) has a rib (29).