WO2010046153A1

WO2010046153A1 - Device for a cooler of a vehicle having a lamellar structure

Info

Publication number: WO2010046153A1
Application number: PCT/EP2009/060821
Authority: WO
Inventors: Thomas Nowak; Markus Liedel; Klaus Linnenbrock
Original assignee: Robert Bosch Gmbh
Priority date: 2008-10-21
Filing date: 2009-08-21
Publication date: 2010-04-29
Also published as: EP2417336A1; DE102008043006A1

Abstract

The invention relates to a device for a cooler (3) of a vehicle, having a frame (10) which at least partially surrounds an opening (11), wherein the opening constitutes at least one partial circle segment, having lamellae (15) which are movably retained on the frame, wherein at least one lamella is mounted so as to be movable on a circle segment path.

Description

description

title

Device for a radiator of a vehicle with a lamellar structure

State of the art

In the prior art, various embodiments of radiator and engine cooling fan modules with the use of a shutter for opening and closing an air opening for the radiator are known.

For example, DE 10 018 154 B4 describes a radiator fan system for internal combustion engines with a lying in the cooling air flow rotationally symmetrical radiator shutter with radial, star-shaped shutter blades with a radially inner and a fixed thereto radially outer bearing ring for the shutter blades, with pivotal mounting of Venetian blinds in the bearing rings to radially extending pivot axes, with connection of the shutter blades on a bearing ring adjacent collar over the respective blade pivot axis offset radially engaging connecting pin and with rotation under axial displacement of the adjusting ring relative to the associated bearing ring about the collar approximately tangentially acting in the region of the outer bearing ring supported actuator such that the shutter blades on the collar between a transverse to the air flow closed position and a Durchlassö Opening for the air flow releasing position are pivotable, wherein the adjusting ring is assigned to the radially inner bearing ring, which forms a collar at least partially receiving hollow hub, and wherein the actuator has a linearly operating Stellaktuator. Thus, the shutter blades are tilted in their longitudinal axis to adjust the opening area of the radiator fan system.

Another Venetian blind arrangement for a radiator fan system is known from European Patent EP 0179304 B1, in which the radiator shutter is a grid comprising, arranged in the air flow, orstsfeste, from each other at a distance connected lamellae and has a transversely to the air flow and parallel to the stationary grid and perpendicular to the longitudinal direction of the slats movable sliding grid, which also has mutually connected at a distance La- mellen common are movable and in the open

The condition of the blind is in the air flow direction in front of or behind the slats of the fixed grid. In the fully closed state of the blind, the slats of the sliding grid are located between the slats of the stationary grid, so that the air flow to the radiator is closed.

Disclosure of the invention

The object of the invention is to provide an improved device for a radiator of the vehicle.

The object of the invention is achieved by the device according to claim 1. An advantage of the invention is that the effective opening for the air flow with the aid of slats is adjustable, which are movably mounted on a partial circular path. This provides a robust and simple means of adjusting the effective opening for the airflow.

In a further embodiment, at least two slats are provided, wherein on the first slat, first means are provided to mitzubewegen the second slat in a first direction of rotation. This creates a simple and secure operative connection between the two slats. In addition, it is sufficient in the selected embodiment to drive the first blade, which then moves the second blade.

In a further embodiment, second means are provided on the first lamella in order to move the second lamella in a second direction of rotation, that of the first lamination

Direction of rotation is opposite to move with. Thus, a return movement of the second blade is made possible only by the operation of the first blade. In a further embodiment, a circular inner frame is provided in the middle of the opening of the frame, on which the slats are guided. This allows a safe and easy guidance of the slats.

In a further embodiment, the fins are in the frame, i. H. guided displaceably in the outer frame on a circular shape. Depending on the chosen embodiment, the slats can be guided on both the inner frame and the outer frame. For a stable guidance of the slats is possible.

Depending on the chosen embodiment, grooves may be provided on the inner frame or on the outer frame in which a plurality of lamellae of a lamella packet are guided in different grooves. As a result, a precise guidance of the slats is possible. In a further embodiment, bending elastic or foldable intermediate elements are formed between two lamellae, which allow a sliding apart or a collapse of the slats. Thus, the principle of the fan is used for an efficient and secure setting of the effective opening.

Depending on the selected embodiment, the means for moving in the form of a motor shaft of a fan wheel may be formed. In this way, the existing for driving the fan wheel motor shaft can be used in addition to moving the slats.

The motor shaft can be temporarily or actively coupled to the lamella.

For this purpose, a corresponding coupling device is provided. The coupling device may be formed electromagnetically or purely mechanically.

In a further embodiment, a drive ring is rotatably supported on the device, which is additionally coupled to a motor. The drive ring is in operative connection with at least one lamella, wherein the lamella can be moved from an open position into a closed position and back by rotating the drive ring.

In another embodiment, a plurality of ring structures are provided with an inner and an outer ring, wherein between the inner ring and the outer ring is formed at least one lamella, and wherein the ring structures are arranged one above the other, and are rotatably mounted in the frame. This embodiment provides a lamellar structure with which the effective opening can likewise be adjusted in a simple manner.

1 shows a schematic representation of a vehicle 1 with a radiator shutter,

FIG. 2 shows a radiator shutter 4,

FIG. 3 shows an opened front view of the radiator shutter,

FIG. 4 shows a partially closed front view of the radiator shutter,

FIG. 5 shows a completely closed front view of the radiator shutter,

FIG. 6 shows a completely closed rear view of the radiator shutter,

FIG. 7 shows a partially opened rear view of the radiator shutter,

FIG. 8 shows a fully opened rear view of the radiator shutter,

FIG. 9 shows a partial representation of a drive ring with guide blades,

FIG. 10 shows a partial section of a plate pack with four lamellae,

FIG. 11 shows a perspective view of a lamella,

FIG. 12 shows a disk pack in an open position,

FIG. 13 shows a disk pack in a closed position,

FIG. 14 shows a further disk pack in an open position,

FIG. 15 shows the further disk pack in the closed position, FIG. 16 shows an embodiment of a lamination composite with two lamellae,

FIG. 17 shows a partial view of the outer frame 10 and the inner frame 13 with guide shapes,

FIG. 18 shows a lamination composite with four lamellae,

FIG. 19 shows eight laminations,

FIG. 20 shows the eight laminations in the closed position,

FIG. 21 shows the eight laminations in the open position,

Figure 22 shows a radiator shutter with elevated outer and inner frame

10, 13

FIG. 23 shows a mounting of the laminar assemblies in the radiator shutter,

FIG. 24 shows fixed laminations in the closed position,

FIG. 25 shows fixed laminations in the open position,

FIG. 26 shows a cross-section through a disk pack that is formed from three disks of three disk assemblies arranged one above the other,

Figure 27 shows an embodiment with the shaft of the fan motor as a drive for the slats of the radiator shutter.

Figure 1 shows a schematic representation of a vehicle 1 with an internal combustion engine 2 with a radiator 3, wherein 3 flows through the radiator coolant for the internal combustion engine 2. The lines for the coolant are not shown. In the flow direction behind the radiator 3, a radiator shutter 4 is provided. After the radiator shutter 4, a fan 5 is arranged, which is rotatable about a shaft 6, wherein the shaft 6 is in operative connection with a motor 7.

The radiator shutter 4 has the task of the air flowing through the radiator 3 stream 8 to influence. Depending on the opening area of the radiator shutter 4 more or less air flow 8 is passed through the radiator 3. Thus, with the help of the radiator shutter 4, the cooling air flow 8 can be adjusted or influenced by the radiator 3. Depending on the selected embodiment, the radiator shutter 4 can also be arranged in front of the radiator 3 or between the fan wheel 5 and the internal combustion engine 2. Furthermore, in the direction of the air flow, first the radiator shutter 4, then the fan 5 and then the radiator 3 can be arranged. There are a variety of orders and arrangements possible.

Figure 2 shows a plan view of the radiator shutter 4, a Zargengrundkörper

9, which comprises an annular outer frame 10 around a flow opening 1 1. In the middle of the flow opening 1 1, a cover plate 12 is provided, which is circular. At the outer edge of the cover plate 12, a circular inner frame 13 is provided. The inner frame 13 is connected to the cover plate 12, wherein also struts 14 are provided, which cover the cover 12 with the Zargengrundkörper 9 and the outer frame

10 connect. In the illustrated embodiment, four struts 14 are provided, which are each offset by 90 ° to each other. Depending on the selected embodiment, more or less struts 14, in particular two struts 14 may be provided.

Between the struts 14 slats 15 and adjacent to the struts 14 each have a guide blade 16 are arranged. The fins 15 and guide plates 16 are guided either on the inner frame 13 or on the outer frame 10. Depending on the selected embodiment, the fins 15 and the guide blades 16 may be movably guided both on the inner frame 13 and on the outer frame 10. Thus, the fins 15 and the guide blades 16 can be moved in a circular path. In the illustrated situation, the flow opening 1 1 is completely closed.

For moving the slats 15 and the guide blades 16 means 17 are provided. In the illustrated embodiment, the means 17 consist of an actuator 18 which is fixed to the Zargengrundkörper 9 and a drive pinion 19 has. The drive pinion 19 is engaged with a ring gear 20 which is guided in the outer frame 10. With the sprocket 20 are the four leaders tion lamella 16 firmly connected. Thus, with the aid of the actuator 18 via the drive pinion 19 and the ring gear 20, the angular position of the guide plates 16 can be adjusted.

Depending on the selected embodiment, an inner sprocket may be provided in the inner frame 13, which is actuated via a drive. In this embodiment, the guide blades 16 are also connected to the inner sprocket.

Between two struts 14, a plate pack with a guide plate 16 and further fins 15 is arranged in each case. The guide lamella 16 constitutes a first lamella and the lamellae 15 represent second lamellae. In the exemplary embodiment illustrated, five lamellae 15 are assigned to one guide lamella 16. Depending on the selected embodiment, more or fewer fins 15 may each be associated with a guide lamella 16. The lamellae 15 and the guide lamella 16 are connected to each other via connecting means in such a way that upon movement of the guide lamella 16 in the clockwise direction in the direction of the adjacent strut 14, the lamellae 15 are pushed together one above the other and depending on the chosen embodiment even up to the clockwise following strut 14 are moved. As connecting means projections and recesses or flexurally elastic elements may be provided. The task of the connecting means is to provide a disk pack whose effective surface is variable with respect to the flow opening 1 1. In this case, for example, the principle of a subject can be used.

FIG. 3 shows a front view of a radiator shutter 4 with a base body 9 with a completely open flow opening 11. In this embodiment, the disk packs are arranged behind the struts 14. Thus, the air flow 8 through the maximum available flow opening 1 1 flow.

Figure 4 shows a second position of the radiator shutter 4, in which the maximum available flow opening 1 1 is partially covered by the disk packs 29. In this case, the guide blades 16 have been moved in a clockwise direction, wherein in addition to the guide blades 16 still two fins 15 are still drawn from a coverage area of the struts 14. The movement of the guide blades 16 takes place, as shown in Figure 2, via the actuator 18, the drive pinion 19 and the ring gear 20th

Figure 5 shows another position of the radiator shutter 4, in which the available

Flow opening 1 1 is completely closed by the disk packs 29 with the guide blades 16 and the fins 15. In this state, no supply air flow can flow through the radiator shutter. In this position, the guide plates 16 are each on a strut 14 and all fins 15 are fully extended. The guide plate 16 and the fins 15 of a plate package 29 lie against each other or overlap in edge regions. FIG. 6 shows the completely closed radiator shutter 4 from a rear view.

Figure 7 shows an intermediate position of the radiator shutter 4, in which the flow opening 1 1 is partially open. It can be seen that the guide plate 16 when driving back into the open position, the slats 15 of the same plate pack 29 entrains.

Figure 8 shows the radiator shutter 4 with a fully open flow opening 1 1, wherein the plate packs 29 are arranged behind the struts 14 and under the guide blades 16. Depending on the selected embodiment, the disk packs 29 may also be arranged laterally next to or also above the struts 14 in the open position.

FIG. 9 shows in a partial view the ring gear 20 with the guide lamellae 16. The ring gear 20 has on the outside in a circular section teeth 23 which are in engagement with the drive pinion 19. The four guide blades 16 are preferably arranged uniformly distributed over the circular ring gear 20. Each guide blade 16 has a downwardly projecting extended rib 24 on a side edge which is counterclockwise with respect to the respective guide blade 16. The rib 24 is needed for collecting the fins 15 in the movement from the closed position to the open position. Furthermore, each guide lamella 16 on the underside and on the side edge opposite the rib has a downwardly projecting, but shorter catch web 25. The takeaway 25 is required to entrain the blade 15, which is adjacent to the guide blade 16, when moving the guide blade 16 from the open position to the closed position.

FIG. 10 shows, in a schematic partial illustration, four fins 15 of a lamella packet 29 from the underside. Each lamella 15 has at the two longitudinal edges in each case a first or second carrier web 26, 27. In the illustrated embodiment, the first carrier web 26 is directed upward and the opposite second carrier web 27 directed downward.

Figure 1 1 shows a single lamella 15 in a perspective view from below, wherein the first carrier web 26 extends in the direction of the image plane, starting from the lamella 15. The second carrier web 27 extends upwards out of the lamella 15.

FIG. 12 shows, in a schematic illustration, a cross section through a disk pack 29, which is located behind a strut 14 in the open position. The illustrated laminated core 29 has three fins 15 and a guide blade 16. The rib 24 extends from the guide blade 16 laterally down to the height of the bottom plate 15. In addition, the

Mitnehmersteg 25 of the guide plate 16 and the associated first Mitnehmersteg 26 of the uppermost plate 15 is formed in such a way that upon movement of the guide plate 16 to the right, the uppermost plate 15 is taken. Furthermore, each of the second Mitnehmersteg 27 of an upper fin 15 and the first Mitnehmersteg 26 a lower fin 15 are arranged in such a way that they hook into each other and fanned out on a movement of the guide shaft 16 to the right. Depending on the chosen embodiment, the struts 14 may comprise a second stop 32 which is in the form of an elongate side wall and which provides a stop for the slats 15 in the movement back to the open position.

FIG. 13 shows the disk pack 29 in the closed position, in which the guide disk 16 is moved as far as a next strut 14 and the space between two struts 14 is covered by the fins 15 of the disk pack 29 that are fanned out. In the illustrated embodiment, the

14 struts a stop 28, which in the direction of the associated blade 15 is aligned, and limits the movement of the second Mitnehmerstegs 27 of the associated blade 15. To open the flow opening 11, the guide lamella 16 is moved back into the open position, the rib 24 pushing the individual lamellae 15 back into the open position during the return movement, as shown in FIG. The shape of the fins 15 and the

Guide blades 16 may be in the form of part-circular cutouts or sickle-shaped forms or other shapes.

FIG. 14 shows a further disk set 31, which is located in an open position over a strut 14. The further disk set 31 has three fins

15 and a guide plate 16. The three blades 15 and the guide blade 16 are connected to each other via a flexurally elastic element 30. The flexurally elastic element 30 may be formed for example in the form of a flexible film or a fabric or in the form of a flexible plate. For example, the further plate pack 31 may be integrally formed from plastic, wherein the flexurally elastic elements 30 are thinner and more flexible than the lamellae 15 and the guide plate 16. When moving the guide plate 16 from the open position to the closed position, as shown in Figure 15, the flexurally elastic elements 30 flip around and the further disk pack 31 is opened like a fan, so that the flow opening 1 1 between two adjacent struts 14 is closed. The flexurally elastic elements 30 may have the same longitudinal extent as the individual lamellae 15 and thus also act as a cover surface or be arranged in such a way that the lamellae 15 and the guide lamella 16 are laterally overlapping in the closed position 15 and thus the lamellae 15 and the guide plate 16 of the further disc pack 31, the flow opening 1 1 between two struts 14 completely cover.

Depending on the selected embodiment, lamellae of adjacent lamellae packages can also be connected to one another. In this case, for example, as shown in Figure 16, two fins 15 of two adjacent plate packs via ring lands 55, 56 may be interconnected. However, it is also possible for three or four lamellae of three or four lamination packets to be connected to one another in the illustrated form. Figure 17 shows another embodiment of the outer frame 10 and the inner frame 13. Both the outer frame 10 and the inner frame 13 are shown in only a 90 degree angle section. The outer frame 10 has on its inside five circumferential annular grooves 33, 34, 35, 36, 37, which are arranged one above the other. Likewise, the inner frame 13 on its outer side five circumferential further annular grooves 60, 61, 62, 63, 64, which are arranged one above the other. In the outer and in the inner annular grooves in each case the five fins 15 of a disk set are guided, so that they are mounted one above the other in fixed planes one above the other. The sprocket 20 with the guide blades 16 rests on the upper edge of the outer frame 10 and the inner frame 13. The course of the respective annular grooves and the respective further annular grooves does not have to take place in one plane. Thus, different distances between the slats 15 of a disk pack can be adjusted depending on the position of the individual slats. Furthermore, transverse grooves 38 are provided, which are arranged perpendicular to the annular grooves and the further annular grooves. About the transverse grooves 38 dirt deposits from the annular grooves or the other annular grooves can escape or be removed.

In a further embodiment, laminations can be used, wherein a lamellar composite in each case has a lamella of a segment of the flow opening 1 1. FIG. 18 shows a lamination composite 43 with four lamellae 15, which are connected to one another via an inner and an outer ring frame 41, 42.

FIG. 19 shows eight lamination composites 43, which are formed in accordance with the lamination composite of FIG. Depending on the angular position of the individual laminations 43, the flow opening 1 1, as shown in Figure 20, are completely closed or, as shown in Figure 21, are fully opened.

For mounting the lamellar composites 43, these are placed in a frame base body 9 on an annular peripheral support edge 70, which is shown in Figure 22, and which is formed according to the Zargengrundkörper of Figure 2, but the inner frame 13 and the outer frame 10 is sufficient are highly trained to accommodate the eight-piece laminations 43 can.

FIG. 23 shows the eight laminations 43 during insertion between the outer frame 10 and the inner frame 13 of the radiator shutter 4. Subsequently, the laminar laminations 43 are prestressed against the bars 14 by means of clamping means, such as hold-downs 44. This situation is shown in FIG. The hold-down 44 may be formed as a bracket, which are bolted or clipped to the Zargengrundkörper 9.

Figure 25 shows the arrangement of the laminations 43 in the open position, wherein Figure 24 shows the laminations 43 in the closed position.

FIG. 26 shows a schematic cross section through three lamellas 15 of three lamination joints 43 arranged on top of one another. The lamellae 15 each have two upwardly arranged first webs 45 and two downwardly arranged second webs 46, which are arranged in such a way that movement of the webbing is sufficient to fan out all slats composites from the open position to the closed position or from the closed position to the open position together. Thus, it is sufficient if the uppermost or the lowest lamellar composite, for example via a sprocket portion with teeth 23 with a drive pinion 19 of the actuator 18 is in communication, as shown in Figure 2. Instead of the illustrated active connection means between the individual laminar connections, other forms of active compound can be used which provide the desired functionality.

In a further embodiment, the shaft 6 of the motor 7 of the fan wheel 5 can be used as drive. Figure 27 shows schematically a partial view of a radiator shutter 4, wherein only the shaft 6 of the motor 7 and the ring gear 20 with the guide blades 16 according to the embodiment of Figure 2 and Figure 9 is shown. In this embodiment, the sprocket 20 has an inner sprocket 51 having teeth on an inner side associated with the shaft 6. In addition, the shaft 6 on the outer circumference on a connecting element 52 which actively or passively an operative connection between the

Shaft 6 and the inner ring gear 51 produces. For example, the connecting element 52 may be formed in the form of a mechanical coupling or in the form of an electromechanical coupling. The embodiment of Figure 27 has the advantage that the motor 7 of the fan wheel 5 in addition to the operation of the fins 15, 16 of the radiator shutter 4 can be used. For this it is only necessary that the motor 7 can be moved both to a clockwise and counterclockwise rotation for the movement of the slats 15 in the closed position or in the open position. Also, a spring mechanism can be integrated on the slats or only on the guide plate, which independently retrieves the blades in the open position at engine standstill. The shaft 6 is guided, for example, through a central opening of the cover plate 12 and serves in addition to the adjustment and alignment of the fins 15th

Using the illustrated embodiments of the radiator shutter 4, it is possible to use the radiator shutter 4 within a radiator module for throttling the cooling air flow. This may have the advantage that an improvement of the aerodynamics of the vehicle is achieved by shutting off the air flow into the engine compartment by the radiator shutter blocks or reduces the air flow through the radiator. In this case, the radiator shutter can be closed as needed and reopened as soon as a flow through the radiator 3 is required. A shut-off of the air supply is by a fan-like

Spread of the slats achieved. The slats are preferably moved in parallel planes, with the sliding of the slats opening or closing the radiator shutter is achieved. The planes in which the individual lamellae of a plate pack run can also run obliquely to one another. Furthermore, the fins 15 and the guide blades 16 may have guide contours, which are provided for guiding in the annular grooves of the outer frame 10 and the inner frame 13, respectively. The lamellae can preferably be arranged in a star shape around the cover plate 12, which represents a motor retaining ring, displaceable in individual guide sequents or also guide units. As a base, the slats can be trapezoidal, but also other shapes such. B. a sickle shape is possible. The fins 15 may have stiffening ribs each at a long fin edge. The stiffening ribs may additionally be formed in the form of the first and the second entrainment webs 26, 27. Instead of the driving webs 26, 27, other forms of

Active compound such. As pins, recesses or hooks used be to provide an operative connection in the desired function between the fins 15 and between the guide blade 16 and a blade 15.

Depending on the selected embodiment may be formed instead of annular grooves in the outer frame 10 and the inner frame 13 and annular webs in the outer frame 10 in the inner frame 13, then according to the lamellae at the lamella ends each have grooves into which the guide webs of the outer frame 10th or the inner frame 13 engage.

Furthermore, it is conceivable that a groove / tongue connection is formed as an active connection means between adjacent lamellae or the guide lamella and the adjacent lamella. Also, mixed forms of said bearings may be possible.

In addition, the lamellae and the guide plate of a plate pack or a lamellar composite can rest directly on the lamellae or on the lamellar composite of the next level. Thus, it is sufficient to guide only the outer lamellae, that is, the guide lamella and / or the lowest lamella in the inner frame 13 and / or in the outer frame 10 via grooves and webs.

In addition, stops between the slats and / or between slats and the struts 14 or between the guide plates and the struts 14 may be elastic or formed as a spring element, whereby manufacturing tolerances, in particular in the slat thickness can be compensated and a geometrically dense system of individual slats of different Levels is supported.

For production-related reasons, it may be advantageous to initially manufacture individual groove areas, spring areas, stops or spring elements as segments, these providing a functional slat guide only after installation and in interaction. However, the said elements can also be designed completely or partially as an integral part of the frame base body 9 in order to reduce a variety of parts. The bearings or stiffening ribs of the slats can also be provided with transverse grooves 38 so that any dirt accumulation during extension and retraction when moving the slats 15 and the guide plate 16 are automatically eliminated and the slats movements are not blocked. To favor a clearing, bevels or

Contours be appropriate. Depending on the selected embodiment, the lamellae and the guide blades can preferably be stowed under the struts 14 in the open state. For the circular movement of the guide plates a part-circular ring gear 20 is provided, which is in operative connection with the actuator 18, which may have, for example, a transmission. In addition, a motion sensor, z. B. a Hall sensor may be provided which detects the opening state, for example, the guide plate 16 and forwards to a control unit. By controlling the actuator 18, the control unit can precisely control a desired open position. Likewise, an adjustment by means of a pressure or vacuum box with additional lever mechanism is conceivable.

In the illustrated embodiment of FIG. 2, four plate packs are shown. Depending on the selected embodiment, however, a single disk set may also be used to close or open the entire flow opening 11. In this embodiment, it is necessary that the ring gear 20 circumferentially teeth 23 has over its entire outer circumference, since the ring gear 20 must be rotated once to open or close the flow opening 1 1 about its entire axis. However, more than one disk pack and also more than four disk packs may be provided for opening and closing the flow opening 11.

Depending on the selected embodiment, the lamellae and / or the guide blades may be formed deformable at least in edge regions and, for example, rubber seal lips are sealed by the elastic molding corresponding gaps between the slats 15 and a guide plate 16 and a blade 15 wholly or partially.

Claims

claims

Device (4) for a radiator (3) of a vehicle (1), comprising a frame (10, 13) which at least partially surrounds a flow opening, wherein the flow opening (11) represents at least one partial circle segment, with fins (15, 16), which are movably mounted on the frame (10, 13), characterized in that at least one lamella (15, 16) is movably mounted on a partial circular path.

2. Apparatus according to claim 1, characterized in that means (17) for moving the blade (15, 16) are provided.

3. Device according to one of claims 1 or 2, characterized in that the lamellae (15, 16) substantially have a partial circle segmental shape.

4. Device according to one of claims 1 to 3, characterized in that at least two blades (15, 16) are provided, that on the first blade (16) first means (25) are provided to the second blade (15) in to move in a first direction of rotation.

5. Apparatus according to claim 4, characterized in that second means (24) on the first lamella (16) are provided to mitzubewegen the second blade (15) in a second direction of rotation.

6. Device according to one of claims 1 to 5, characterized in that in the middle of the flow opening, a circular inner frame (13) is provided, that the frame (10) is circular on an inner side, that the inner frame (13) with the Frame (10) is connected, and that the fins in the inner frame (13) are guided.

7. Device according to one of claims 1 to 6, characterized in that in the middle of the flow opening, a circular inner frame (13) is provided, that the frame (10) is circular on an inner side, that the inner frame (13) with the Frame is connected, and that the slats (15, 16) in the frame (10) are guided.

8. Device according to one of claims 6 or 7, characterized in that a plurality of grooves (33-37, 60-64) in the inner frame (13) or in the frame (10) are provided to a plurality of slats (15, 16) in different Nuten (33-37, 60-64).

9. Device according to one of claims 1 to 8, characterized in that the lamellae (15, 16) have elastic or foldable elements with which a plurality of fins (15, 16) to a plate pack (29, 31) are connected, wherein the Slats (15, 16) of the disk pack (29, 31) are foldable to a larger or smaller area.

10. Device according to one of claims 2 to 9, characterized in that the means for moving in the form of a shaft (6) of a Lüfterrrades (5) for the radiator (3) is formed, wherein the shaft (6) with the slats ( 15

16) can be brought into operative connection.

1 1. Apparatus according to claim 10, characterized in that the shaft (6) is temporarily active or passive coupled with a lamella (16) of the disk set.

12. Device according to one of claims 1 to 1 1, characterized in that a drive ring (20) is provided, that the drive ring (20) with a motor (18) can be coupled, that the drive ring (20) rotatably on the frame men (10) is mounted, that the drive ring (20) with at least one blade (16) is in operative connection and that by rotating the drive ring (20), the blade (16) is movable from an open position to a closed position.

13. Device according to one of claims 1 to 12, characterized in that a plurality of ring structures (43) are provided, wherein a ring structure an inner ring (41) and an outer ring (42), wherein the inner ring (41) is connected to the outer ring (42) via at least one lamella (15, 16) with a plurality of ring structures (43) arranged one on top of the other are rotatably mounted in the frame (10), at least one ring structure having means for rotating, so that the position of the

Slats is changeable.

14. The device according to claim 13, characterized in that active means (45, 46) are provided, with which a first ring structure (43) in operative connection with a second ring structure (43) can occur, wherein the active agent

(45, 46) are formed in such a way that when moving the first ring structure (43) from an open position to a closed position, the second ring structure (43) is rotated by a predetermined angular position, wherein the effective area of the lamellae of the first and the second ring structure (43) is enlarged, wherein the active means are formed in such a way that when moving the first ring structure (43) from the closed position to the open position and the second ring structure (43) is rotated, wherein in the open position Slats (15, 16) of the first and the second ring structure (43) are at least partially arranged one above the other.

15. Device according to one of claims 1 to 14, characterized in that at least one lamella (15, 16) are formed elastically at least in the region of a longitudinal side to improve contact with an adjacent lamella.