EP3385630B1 - Fluid guiding device and ventilation device therewith - Google Patents

Description

The invention relates to a fluid deflection device which is present, for example, as a component of an air-conditioning device.

The fluid deflection device is used in particular to distribute and / or deflect a fluid. The fluid is in the form of air, for example, so that the fluid deflection device can also be referred to as an air deflection device. The fluid deflection device is particularly preferably a component of the ventilation device, which is designed, for example, as a ventilation device or ventilation system, in particular as a facade ventilation device. The facade ventilation device is designed to be integrated into a wall of a building. In addition to the fluid deflection device, the ventilation device preferably has at least one heat exchanger and / or an air delivery device, for example a fan or the like. The document WO 2016/096965 A1 discloses a fluid deflection device having the features of the preamble of claim 1.

It is the object of the invention to propose a fluid deflection device which has advantages over known fluid deflection devices, in particular has low flow losses and at the same time can be produced simply and inexpensively.

This is achieved according to the invention with a fluid deflection device having the features of claim 1. Preferred embodiments of the invention are defined in the subclaims. According to the invention it is provided that the fluid deflection device has an inner wall, an intermediate wall and an outer wall which are each circular cylindrical with respect to a longitudinal center axis of the fluid deflection device, on a first axial side of the fluid deflection device on a first radial side of the intermediate wall, in particular between the inner wall and the partition, a first inner fluid connection and on a second radial side of the partition, in particular between the partition and the outer wall, a first outer fluid connection and on a second axial side opposite the first axial side of the fluid deflection device on the first radial side of the partition, in particular formed between the inner wall and the intermediate wall, a second inner fluid connection and on the second radial side of the intermediate wall, in particular between the intermediate wall and the outer wall, a second outer fluid connection is, where the first inner fluid port is in fluid communication with the second outer fluid port and is fluidly separated from the second inner fluid port, and the first outer fluid port is in fluid communication with the second inner fluid port and is fluidly separated from the second outer fluid port.

Overall, the fluid deflection device or at least the named walls, that is to say the inner wall, the intermediate wall and the outer wall, are constructed to be circular-cylindrical, namely with respect to the longitudinal center axis. The longitudinal center axis of the fluid deflection device corresponds to the longitudinal center axis of the circular cylindrical inner wall, the longitudinal center axis of the circular cylindrical intermediate wall and the longitudinal center axis of the circular cylindrical outer wall, which coincide to that extent.

The mentioned fluid connections, that is the first inner fluid connection, the first outer fluid connection, the second inner fluid connection and the second outer fluid connection are arranged in pairs on opposite axial sides of the fluid deflection device, that is on opposite end faces of the fluid deflection device. Here, the two first fluid connections, that is to say the first inner fluid connection and the first outer fluid connection, are arranged or formed on the same side of the fluid deflection device. The same applies to the two second fluid connections, that is to say the second inner fluid connection and the second outer fluid connection.

The fluid connections are each designed to be circular or ring-shaped. The inner fluid connections are bounded outward in the radial direction by the intermediate wall and can extend continuously inward in the radial direction up to the longitudinal center axis. In this respect, the corresponding inner fluid connection is circular. Alternatively, it can of course be provided that the inner fluid connection is delimited in the radial direction outward by the intermediate wall and in the radial direction inward by the inner wall, so that it is circular. At least one of the outer fluid connections is delimited in the radial direction inward by the intermediate wall and in the radial direction outward by the outer wall, so that it is circular. This particularly preferably applies to both outer fluid connections. The intermediate wall serves on both sides of the fluid deflection device in each case for the fluid-technical separation of the corresponding inner fluid connection from the outer fluid connection on the same axial side. It is therefore preferably provided that the intermediate wall and the outer wall have end faces which are aligned with one another and which in this respect lie on the same plane perpendicular to the longitudinal center axis.

Seen in the longitudinal section, that is to say cut along the longitudinal center axis, the first fluid connections are intended to be in cross-flow connection with the second fluid connections. Thus, the first inner fluid connection should be fluidically connected to the second outer fluid connection, but should be fluidically separated from the second inner fluid connection. At the same time, the first outer fluid connection should be in flow connection with the second inner fluid connection and be fluidically separated from the second outer fluid connection. Inside the fluid deflection device, the fluid entering through one of the fluid connections is always deflected in the radial direction, namely in the radial direction inwards or in the radial direction outwards, before it exits the fluid deflection device on the axially opposite side. Such a configuration of the fluid deflection device enables a compact configuration of the ventilation device. Due to the structure of the fluid deflection device with the three walls, namely the inner wall, the intermediate wall and the outer wall, which are also preferably arranged coaxially or concentrically with one another, the fluid deflection device is also easy to manufacture with high dimensional stability at the same time.

Another embodiment of the invention provides that the fluid connection between the first inner fluid connection and the second outer fluid connection is via at least one first flow chamber and the fluid connection between the first outer fluid connection and the second inner fluid connection is via at least one second flow chamber. By definition, the fluid connections are preferably located in the respective face plane of the fluid deflection device. Preferably, the first fluid connections lie completely in a first plane and the second fluid connections lie completely in a second plane parallel to this, the planes being spaced apart from one another in the axial direction. The two planes are each preferably perpendicular to the longitudinal center axis. The two planes can each accommodate opposite end faces or end faces of the outer wall and / or the intermediate wall and / or inner wall.

A flow chamber is assigned to each of the fluid connections, i.e. on the one hand the fluid connection between the first inner fluid connection and the second outer fluid connection and on the other hand the fluid connection between the first outer fluid connection and the second inner fluid connection, the flow chambers being the first flow chamber and the second flow chamber can be referred to. Of course, several fluid connections can be provided in each case, so that several first flow chambers are also provided and / or several second flow chambers can be implemented. The fluid deflection device particularly preferably has the same number of first flow chambers and second flow chambers.

The first inner fluid connection can be connected to the first flow chamber via a first inner flow channel, whereas the latter is connected to the second outer fluid connection via a second outer flow channel. Analogously to this, it can be provided that the first outer fluid connection is in flow connection with the second flow chamber via a first outer flow channel and the latter in turn is in flow connection with the second inner fluid connection via a second inner flow channel. A plurality of first flow chambers and a plurality of second flow chambers are preferably formed.

The flow channels are preferably each straight and each have a longitudinal center axis which runs parallel to the longitudinal center axis. Alternatively, the first flow chamber can be delimited on the one hand by the first inner fluid connection and on the other hand by the second outer fluid connection. In this case, the second flow chamber is delimited on the one hand by the first outer fluid connection and on the other hand by the second inner fluid connection. In other words, the first flow chamber connects directly to the first inner fluid connection on the one hand and directly to the second outer fluid connection on the other. Correspondingly, the second flow chamber connects directly to the first outer fluid connection on the one hand and directly to the second inner fluid connection on the other.

The flow chambers, that is to say the first flow chamber and the second flow chamber, are preferably each designed to deflect the fluid flow. In the first flow chamber, there is preferably a deflection starting from the first inner fluid connection in the radial direction outwards to the second outer fluid connection and in the second flow chamber a deflection in the radial direction inwards starting from the first outer fluid connection to the second inner fluid connection or vice versa. The flow chambers are preferably designed such that the fluid flowing into them through one of the fluid connections flows into them parallel to the longitudinal center axis and is deflected there in the radial direction before it exits the fluid deflection device through another of the fluid connections.

A preferred further embodiment of the invention provides that the first flow chamber and / or the second flow chamber, viewed in the radial direction, in a first flow area on the inside of the inner wall and / or on the outside of the partition, and / or in a second flow area on the inside of the Inside wall and outside by the outer wall, and / or in a third flow area is bounded inside by the partition and outside by the outer wall. At least one of the flow chambers, but preferably both flow chambers, are divided into the different flow regions. In the first flow area - seen in longitudinal section with respect to the longitudinal center axis - it can be provided that the respective flow chamber is limited only in the radial direction outward by the partition, while it is continuous in the radial direction inward, i.e. up to the longitudinal center axis extends. Alternatively, however, it can be provided that the respective flow chamber - viewed in longitudinal section with respect to the longitudinal center axis - is delimited in the first flow area in the radial direction on the inside by the inner wall and on the outside by the partition and to that extent extends annularly between them.

In the second flow area, the respective flow chamber extends - viewed in longitudinal section with respect to the longitudinal center axis - in the radial direction from the inside to the outside, starting from the inner wall up to the outer wall. In the third flow area, on the other hand, it is delimited on the inside by the intermediate wall and on the outside by the outer wall - viewed in longitudinal section with respect to the longitudinal center axis. It becomes clear that the respective flow chamber in the second flow area has the greatest extent in the radial direction. In the second flow area, the deflection also takes place in the radial direction, namely starting from the first flow area in the radial direction outwards to the second flow area or, conversely, in the radial direction inwards starting from the third flow area up to the first flow area.

Another embodiment of the invention provides that the inner wall, the intermediate wall and the outer wall are connected to one another via radial webs, two of the radial webs delimiting the first flow chamber and / or the second flow chamber in the circumferential direction. The radial webs preferably extend straight in the radial direction from the inside to the outside, as seen in plan view or in cross section. For example, they start on the inner wall and extend to the outer wall. However, it can also be provided that they run continuously in the radial direction from the longitudinal center axis to the outer wall, preferably continuously straight. In this respect, there are more than two radial webs provided, these are preferably arranged in a star shape with respect to one another or with respect to the longitudinal center axis.

Two of the radial webs each delimit the first flow chamber and / or the second flow chamber in the circumferential direction. If only exactly two radial webs are provided, they are aligned with one another so that one of the radial webs is the extension of the other of the radial webs. In such an embodiment, the radial webs delimit the first flow chamber on the one hand and the second flow chamber on the other hand, that is to say delimit the two flow chambers from one another. Preferably, however, more than two radial webs are provided, particularly preferably the number of radial webs is a multiple of two. Each of the radial webs limits the first flow chamber or one of the first flow chambers in the circumferential direction and the second flow chamber or one of the second flow chambers in the circumferential direction.

A further development of the invention provides that the two of the radial webs are connected to one another on their end faces facing the first axial side via an inner flow guide wall connecting the inner wall and the intermediate wall and spaced from the outer wall and / or on their second axial side facing end faces are connected to one another via an outer flow guide wall which connects the intermediate wall and the outer wall to one another and is spaced from the inner wall. As already explained above, the radial webs are formed continuously at least between the inner wall and the outer wall. The flow guide walls, that is to say the first flow guide wall and the second flow guide wall, are now provided for separating the first flow chamber from the second flow chamber in terms of flow technology.

The inner flow guide wall extends in the radial direction between the inner wall and the intermediate wall, that is to say in the radial direction starting from the inner wall up to the intermediate wall. It also extends in the circumferential direction from one of the radial webs to the other of the radial webs. In an analogous manner, the outer flow guide wall extends in the radial direction starting from the intermediate wall up to the outer wall and in the circumferential direction starting from one of the radial webs to the other of the radial webs.

Two of the radial webs, which are connected to one another via the inner flow guide wall, are particularly preferably not connected to one another via an outer flow guide wall, and vice versa. One of the radial webs is connected to a first further of the radial webs via the inner flow guide wall and to a second further radial webs via an outer flow guide wall. In other words, an inner flow guide wall and an outer flow guide wall act on each of the radial webs, but these extend in the circumferential direction in opposite directions.

In a further embodiment of the invention it is provided that the inner flow guide wall and / or the outer flow guide wall is curved in the circumferential direction, in particular continuously or only in a curvature region adjoining the radial webs, and / or merges tangentially into the radial webs. Due to the curvature of the flow guide wall, an extremely low pressure loss of the fluid deflection device is achieved. The curvature is present in the circumferential direction, the inner flow guiding wall preferably having a greater curvature than the outer flow guiding wall, in particular in its center in the circumferential direction. The curvature can in particular be continuous or be limited to the curvature region or regions at which the respective flow guide wall merges into the radial web or webs. An embodiment is particularly preferred in which the respective flow guide wall merges tangentially into at least one of the radial webs, but particularly preferably into both of the radial webs, and has a corresponding curvature for this purpose. The curvature can basically be concave or convex.

A preferred embodiment of the invention provides that the inner flow guide wall and / or the outer flow guide wall are inclined in the radial direction and / or in the tangential direction, in particular are inclined in opposite directions. In addition or as an alternative to the curvature of the respective flow guide wall described above, it can be inclined. The inclination is provided in the radial direction and / or in the circumferential direction. The inclination in the radial direction is to be understood as meaning that the flow guide wall has different axial positions at different radial positions, for example, as seen in the radial direction from the inside to the outside, is tilted in the axial direction backwards or forwards or more generally in one direction or the other. The inclination in the tangential direction is provided such that the flow guide wall has different axial positions at different tangential positions. The tangential The direction can alternatively also be referred to as the circumferential direction and accordingly the tangential position as the circumferential position. The inclination in the tangential direction is directed, for example, in such a way that any circumferential component of the flow that may be present is converted into an axial component.

A further advantageous embodiment of the invention provides that the outer flow guide wall directly adjoins an axially inner end face of the partition and the inner flow guide wall engages the end face of the partition via a connecting web continuing the partition. The intermediate wall is preferably not designed continuously in the axial direction, but is divided into two intermediate wall areas which are spaced apart from one another in the axial direction. The intermediate wall or one of the intermediate wall areas has to this extent an end face lying on the inside in the axial direction. The outer flow guide wall preferably starts directly from this. This does not apply to the inner flow guide wall. Rather, it is connected to the end face via the connecting web. The connecting web continues the intermediate wall and in this respect forms an extension of it in the axial direction. The connecting web is preferably delimited on both sides in the circumferential direction by an outer flow guide wall.

According to the invention it is provided that the fluid deflection device has two axial areas adjoining one another in the axial direction, each of the axial areas having an inner wall area of the inner wall, an intermediate wall area of the intermediate wall, an outer wall area of the outer wall and radial web areas of the radial webs, the outer wall areas, the inner wall areas and Radialstegbareiche adjoin one another and the partition areas are aligned with one another and spaced apart from one another in the axial direction. Such a design has already been pointed out. The fluid deflection device can be divided into two areas, namely the two axial areas. The two axial areas have the same extension in the axial direction, that is, they have the same axial extension.

The inner wall areas and the outer wall areas directly adjoin one another in the axial direction, so that the inner wall and the outer wall are each present as a continuous circular cylinder. The radial web areas of the radial webs also lie directly against one another, viewed in the axial direction, so that continuous axial webs are configured in the axial direction. However, the intermediate wall areas are spaced apart from one another in the axial direction and are located each as a circular cylinder. The design of the intermediate wall or the intermediate wall areas enables a simple fluid separation of the inner fluid connections from the outer fluid connections and, in this respect, a compact design of the fluid deflection device.

A further development of the invention provides that in each of the axial regions in the circumferential direction an inner flow guide wall and an outer flow guide wall alternately engage the respective intermediate wall region so that the flow guide walls of the axial regions are arranged in rows spaced apart from one another in the axial direction. In each of the axial regions there are at least one inner flow guide wall and one outer flow guide wall, but preferably a plurality of inner flow guide walls and a plurality of outer flow guide walls.

The at least one flow guiding wall and the at least one outer flow guiding wall of each of the axial regions are at least partially overlapping one another when viewed in the axial direction or when viewed in longitudinal section. The flow guide walls of the different axial regions, however, are spaced apart from one another in the axial direction or at most directly adjoin one another in the axial direction. In any case, however, the flow guide walls of one of the axial regions are in a first row and the flow guide walls of another of the axial regions are in a second row, the two rows being spaced apart from one another in the axial direction.

The invention further provides that each of the axial regions is formed by a fluid distribution element and the fluid distribution elements are present as identical parts. The fluid distribution elements are constructed completely identical to one another and are arranged on one another, in particular fastened on one another, to form the fluid deflection device. The fastening can in principle take place in any manner, for example a form-fitting and / or a material-fitting fastening is provided. The inventive design of the fluid distribution elements as identical parts enables the fluid deflection device to be manufactured inexpensively because the fluid distribution elements can be manufactured using the same tool, for example by injection molding or the like.

According to the invention it is also provided that the fluid distribution elements are connected to one another at an angle offset in the circumferential direction. The two fluid distribution elements are not connected to one another in the same angular orientation, but rather rather, an angular offset is preferably provided around one of the radial webs. The angular offset is selected such that the fluid connection described at the beginning is realized between the first inner fluid connection and the second outer fluid inclusion on the one hand and the first fluid connection and the second inner fluid connection on the other hand.

Within the scope of a preferred embodiment of the invention it is provided that the first inner fluid connection and the second inner fluid connection have the same flow cross section and / or that the first outer fluid connection and the second outer fluid connection have the same flow cross section. This is achieved in particular by the coaxial arrangement of the intermediate wall areas. The inner wall and the outer wall are in any case designed continuously in the axial direction and are circular-cylindrical. Of course, in principle different flow cross-sections can also be implemented, so that the first inner fluid connection and the second inner fluid connection and / or the first outer fluid connection and the second outer fluid connection (each) have different flow cross-sections from one another.

A further development of the invention provides that an end face of the inner wall facing the first axial side is offset in the axial direction towards the second axial side and / or an end face of the inner wall facing the second axial side is offset in the axial direction towards the first axial side is, in particular, in each case for the formation of a receiving chamber, preferably for a fan device and / or a cross-section adjustment device. It has already been explained above that the end faces or end faces of the outer wall and the intermediate wall, viewed in the axial direction, are preferably aligned with one another, in particular on both sides of the fluid deflection device in the axial direction. In contrast to this, the end faces of the inner walls or at least one of the end faces can be offset inward in the axial direction, so that on the one hand the first flow chamber or the second flow chamber is unlimited inward in the radial direction in the first flow area, i.e. extends up to the longitudinal center axis and on the other hand, the arrangement of further facilities is possible.

The resetting of the end face is preferably used to form the receiving chamber for the fan device and / or for the cross-section adjustment device. The fan device has, for example, an impeller which is arranged in the receiving chamber, whereas a motor of the fan device can be arranged in a chamber delimited outward in the radial direction by the inner wall. In addition or as an alternative to the fan device For example, the cross-section adjustment device can be provided in the receiving chamber, by means of which the flow cross-section of at least one of the flow chambers, preferably both flow chambers, can be adjusted. The flow cross-section can preferably be set as desired by means of the cross-section adjustment device, in particular the flow connection can optionally be completely interrupted or completely released. The dimensions of the receiving chamber are preferably adapted to the fan device or the cross-section adjustment device, for example a motor of the fan device rests with its outer circumferential surface at least in sections on an inner circumferential surface delimiting the receiving chamber, in particular in such a way that it is fixed in the receiving chamber in a force-locking and / or form-fitting manner. Alternatively, the receiving chamber can of course be filled with solid material, which is in particular in one piece and / or of the same material with the inner wall.

The invention further relates to a ventilation device which has a fluid deflection device according to the above statements.

Figur 1

eine schematische Darstellung einer Fluidumlenkungseinrichtung, die sich aus zwei Fluidverteilungselementen zusammensetzt,

Figur 2

eine Detaildarstellung eines der Fluidverteilungselemente,

Figur 3

eine Längsschnittdarstellung durch die Fluidumlenkungseinrichtung,

Figur 4

eine Ausgestaltung der Fluidumlenkungseinrichtung, bei welcher in einer Aufnahmekammer eine Querschnittsverstelleinrichtung angeordnet ist,

Figur 5

eine schematische Darstellung der Fluidumlenkungseinrichtung in einer zweiten Ausführungsform,

Figur 6

eine erste Ausführungsform eines lufttechnischen Geräts in schematischer Längsschnittdarstellung, wobei das lufttechnische Gerät über die Fluidumlenkungseinrichtung verfügt, sowie

Figur 7

eine zweite Ausführungsform des lufttechnischen Geräts.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawing, without restricting the invention. It shows:

Figure 1

a schematic representation of a fluid deflection device, which is composed of two fluid distribution elements,

Figure 2

a detailed representation of one of the fluid distribution elements,

Figure 3

a longitudinal section through the fluid deflection device,

Figure 4

an embodiment of the fluid deflection device in which a cross-section adjustment device is arranged in a receiving chamber,

Figure 5

a schematic representation of the fluid deflection device in a second embodiment,

Figure 6

a first embodiment of a ventilation device in a schematic longitudinal section, wherein the ventilation device has the fluid deflection device, and

Figure 7

a second embodiment of the ventilation device.

The Figure 1 shows a schematic representation of a fluid deflection device 1, as it can be installed, for example, in a ventilation device 2 (not shown here). The fluid deflection device 1 has an inner wall 3, an intermediate wall 4 and an outer wall 5. It is basically composed of two fluid distribution elements 6 and 7, which directly adjoin one another in an imaginary parting plane 8.

It can be seen, at least to some extent, that the outer wall 5 is composed or has two outer wall areas 9 and 10 adjoining one another in the axial direction. The intermediate wall 4 has intermediate wall regions 11 and 12 which are spaced apart from one another in the axial direction. The inner wall 3 in turn has inner wall areas 13 and 14, of which only the inner wall area 13 can be seen here. The inner wall areas 13 and 14, analogously to the outer wall areas 9 and 10, lie directly against one another in the axial direction, so that the inner wall 3 and the outer wall 5 are each designed in the form of a continuous circular cylinder. In contrast, the intermediate wall areas 11 and 12 each form a separate circular cylinder.

In addition to the walls 3, 4 and 5 mentioned, the fluid deflection device 1 has several radial webs 15, only a few of which are marked purely by way of example. The radial webs extend in the radial direction, preferably continuously, starting from the inner wall 3 up to the outer wall 5, that is to say connect them. In addition, the intermediate wall 4 is connected to the inner wall 3 on the one hand and to the outer wall 5 on the other hand via the radial webs 15.

The fluid deflection device 1 has two opposite sides in the axial direction. A first inner fluid connection 16 and a first outer fluid connection 17 are provided on a first side. On the other hand, on the second side (not visible here) a second inner fluid connection 18 and a second outer fluid connection 19. The inner fluid connections 16 and 18 are delimited outward in the radial direction by the intermediate wall 4. The outer fluid connections 17 and 19 are located between the intermediate wall 4 and the outer wall 5, seen in the radial direction, that is to say they are delimited inwardly by the intermediate wall 4 and outwardly by the outer wall 5.

It is now provided that the first inner fluid connection 16 is in fluid connection with the second outer fluid connection 19 and is fluidly separated from the second inner fluid connection and of course also from the first outer fluid connection 17. In contrast, the first outer fluid connection 17 should be in fluid connection with the second inner fluid connection 18 and be fluidically separated from the second outer fluid connection 19 and of course also from the first inner fluid connection 16. The fluid connection between the first inner fluid connection 16 and the second outer fluid connection 19 is via at least one first flow chamber 20 and the fluid connection between the first outer fluid connection 17 and the second inner fluid connection 18 is via at least one second flow chamber 21.

In the exemplary embodiment shown here, a plurality of first flow chambers 20 and a plurality of second flow chambers 21 are formed, which are formed alternately as seen in the circumferential direction. The first flow chambers 20 and the second flow chambers 21 are only indicated here by way of example and each reach through the fluid deflection device 1 starting from one of the fluid connections on the first side to another of the fluid connections on the other side. In the exemplary embodiment shown here, an interior space 22 (not recognizable here), which is delimited outward in the radial direction by the inner wall 3, is closed at least on one side by means of a cover 23 when viewed in the axial direction. The interior 22 is preferably closed on both sides by means of covers 23. The cover 23 or the cover 23 are preferably designed in one piece and / or made of the same material with the inner wall 3. The cover 23 can in principle have any shape. For example, it is continuously planar, conical, frustoconical or part-spherical, in particular hemispherical.

The Figure 2 shows, purely by way of example, the fluid distribution element 7. The parting plane 8, in which the outer wall areas 9 and 10 and the inner wall areas 13 and 14 adjoin one another, can be clearly seen here. It is clear that the fluid distribution element 7 has a multiplicity of radial webs 15 or radial web regions. In each case two of the radial webs 15 delimit one of the first flow chambers 20 or one of the second flow chambers 21 between them. Preferably, each of the radial webs 15, viewed in the circumferential direction, delimits one of the first flow chambers 20 on the one hand and one of the second flow chambers 21 on the other Viewed in the circumferential direction, the first flow chambers 20 alternate with the second flow chambers 21.

To form the flow chambers 20 and 21, two of the radial webs 15 are connected to one another by means of an inner flow guide wall 24 or an outer flow guide wall 25. The inner flow guide walls 24 and the outer flow guide walls 25 preferably alternate in the circumferential direction. From each of the radial webs 15, on the one hand, an inner flow guide wall 24, but no outer flow guide wall 25, and on the other hand an outer flow guide wall 25, but no inner flow guide wall 24 extend in the circumferential direction. In other words, exactly one of the inner flow guide walls 24 and exactly one of the outer flow guide walls 25 each have exactly one radial web 15 between them or directly adjoin them.

The Figure 3 shows a longitudinal sectional view through the fluid deflection device 1 along a longitudinal center axis 26. In the exemplary embodiment shown here, the fluid deflection device 1 has a receiving chamber 27 or 28 on both sides, which by stepping back the inner wall 3 in the axial direction inward, i.e. in the direction of the parting plane 8, is realized. The inner wall 3 has end faces 29 and 30 opposite one another in the axial direction, the intermediate wall 4 has end faces 31 and 32 opposite one another in the axial direction, and the outer wall 5 has end faces 33 and 34 opposite one another in the axial direction.

It is clear that the end faces 31 and 33 on the one hand and the end faces 32 and 34 on the other hand each lie in a common plane, this plane being perpendicular to the longitudinal center axis 26. The end faces 29 and 30, on the other hand, are offset inwardly towards one another in the axial direction in order to form the receiving chambers 27 and 28. An impeller 35 of a fan device 36 is arranged in each of the receiving chambers 27 and 28. It can be provided that the running wheels 35 can be driven by means of the same motor 37 which is arranged in the interior 22.

The flow chambers 20 and 21, viewed in the axial direction, can each be conceptually divided into a first flow area, a second flow area and a third flow area. In the first flow area they are in the radial direction outside from the partition 4, in the second flow area in the radial direction inside from the inner wall 3 and in the radial direction outside from the outside wall 5 and in the third flow area in the radial direction inside from the partition 4 and bounded on the outside by the outer wall 5.

The Figure 4 shows an alternative embodiment of the fluid deflection device 1. Basically, reference is made to the above statements and only the differences are discussed. Instead of the fan device 36 with the impeller 35 and the motor 37, a cross-section adjustment device 38 is now arranged at least in some areas in the receiving chamber 27. The cross-section adjustment device 38 has an adjustable diaphragm 39, by means of which the flow cross-section of the first flow chamber 20 (in the exemplary embodiment shown here) can be adjusted. Of course, the cross-section adjustment device 38 can additionally or alternatively have a screen which is used to adjust the flow cross-section of the second flow chamber 21. The screen 39 can be adjusted, for example, by means of a motor which is arranged in the interior 22 analogously to the motor 37.

The Figure 5 shows a schematic representation of the fluid deflection device 1 in a second embodiment. This has a largely identical structure to the fluid deflection device 1 already described, so that reference is made to the above statements and only the differences are discussed below. These are due to the fact that the inner flow guide wall 24 and / or the outer flow guide wall 25 are not only curved in the circumferential direction, but are also arranged inclined. In other words, the inner flow guiding wall 24, the outer flow guiding wall 25 or both are positioned in the circumferential direction. This can be provided in addition to or as an alternative to the curvature. For example, the inner flow guiding wall 24 and / or the outer flow guiding wall 25 are designed to be planar in areas or are located in areas in an imaginary plane. The planar area or the imaginary plane is now angled with respect to the longitudinal center axis 26, so it forms an angle with it that is greater than 0 ° and less than 180 °.

The inclination of the inner flow guiding wall 24 and / or the outer flow guiding wall 25 is, for example, opposite to a direction of rotation of a flow flowing through the fluid deflection device 1. In particular, the inclination of a direction of rotation of the respectively closest impeller 35 is directed in order to reduce the circumferential speed of the flow, that is, to reduce the circumferential speed of the fluid conveyed by the impeller 35 downstream of the impeller 35. With such a configuration of the fluid deflection device 1, a more uniform flow is achieved. For all embodiments of the fluid deflection device 1 it can be provided that the radial webs 15 are inclined and / or curved, in each case in the axial and / or radial and / or tangential direction. For example, the radial webs 15 or each of the radial webs 15 are inclined in such a way, in particular in the axial direction, that a diffuser is formed, in particular that the first flow chamber 20 and / or the second flow chamber 21 are (each) configured like a diffuser and are therefore one larger in the flow direction will have the flow cross-section. In other words, the first inner fluid connection 16 has a smaller flow cross section than the second outer fluid connection 19 which is in flow connection with it and / or the first outer fluid connection 17 has a smaller flow cross section than the second inner fluid connection 18 which is in flow connection with it a nozzle-like configuration can be provided in which the ratios of the flow cross-sections are reversed. Alternatively or additionally, the radial webs 15 can be inclined in the circumferential direction and / or in the tangential direction. A curvature of the radial webs 15 can also be implemented, in particular a curvature in the radial direction.

The Figure 6 shows a first embodiment of the ventilation device 2, which extends through a wall 40. The ventilation device 2 has an internal connection 41 with an interior panel 42 on one side of the wall 40. On the side of the ventilation device 2 opposite the internal connection 41, an external connection 43 with an external panel 44 on the other side of the wall 40 is provided. By means of the ventilation device 2, two flow paths 45 and 46 are implemented. A circular filter 47 is provided on the inside and a ring filter 48 on the outside, and a ring filter 49 on the inside and a circular filter 50 on the outside is provided in the flow path 46. A heat accumulator 51 and the fluid deflection device 1 are arranged in both flow paths 45 and 46. The heat accumulator 51 is preferably designed in one piece for both flow paths 45 and 46 and is, for example, in the form of a ceramic heat accumulator, in particular a ceramic honeycomb heat accumulator.

The Figure 7 shows a second variant of the ventilation device 2. In the following, reference is made to the above statements and only the differences are discussed. These lie in the fact that, instead of the heat accumulator 51, two partial heat accumulators 52 and 53 are provided, which are arranged on both sides of the fluid deflection device 1 in the direction of flow. In other words, the partial heat store 52 is on the inside or on the one hand and the partial heat accumulator 53 is provided on the outside or on the other hand of the fluid deflection device 1. The flow paths 45 and 46 essentially correspond to those described above. Basically, it should be pointed out that the flow paths 45 and 46 of the ventilation device 2 can basically be flown through in any direction. For example, the ventilation device 2 is designed as a so-called push-pull device, in which each of the flow paths 45 and 46 is flowed through at times in a first direction and at times in a second direction opposite the first direction.

Claims (12)

1. A fluid guiding device (1), with an inner wall (3), an intermediate wall (4) and an outer wall (5) which are respectively circularly cylindric relative to a longitudinal center axis (26) of the fluid guiding device (1), whereby, on a first axial side of the fluid guiding device (1), a first internal fluid port (16) is formed on a first radial side of the intermediate wall (4), and a first outer fluid port (17) is formed on a second radial side of the intermediate wall (4), and, on a second axial side of the fluid guiding device (1), opposite the first axial side, a second internal fluid port (18) is formed on the first radial side of the intermediate wall (4), and a second outer fluid port (19) is formed on the second radial of the intermediate wall (4), whereby the first inner fluid port (16) is in fluid communication with the second outer fluid port (19) and is fluidically isolated from the second inner fluid port (18), and the first outer fluid port (17) is in fluid communication with the second inner fluid port (18) and is fluidically isolated from the second outer fluid port (19), whereby the fluid guiding device (1) has two axial regions adjacent to one another in the axial direction, whereby each of the axial regions has an inner wall region (13, 14) of the inner wall (3), an intermediate wall region (11, 12) of the intermediate wall (4), an outer wall region (9, 10) of the outer wall (5) and radial web regions of the radial webs (15), whereby the outer wall regions (9, 10), the inner wall regions (13, 14) and the radial web regions are adjacent to one another, and the intermediate wall regions (11, 12), in alignment with one another, are spaced apart from each other in the axial direction, characterised in that each of the axial regions is respectively formed by a fluid distribution element (6, 7), and the fluid distribution elements (6, 7) are provided as identical parts connected to each other with an angular offset in the circumferential direction.
2. The fluid guiding device according to claim 1, characterised in that the fluid connection between the first inner fluid port (16) and the second outer fluid port (19) is provided via at least one first flow chamber (20) and the fluid connection between the first outer fluid port (17) and the second inner fluid port (18) via at least one second flow chamber (21).
3. The fluid guiding device according to any one of the preceding claims, characterised in that the first flow chamber (20) and/or the second flow chamber (21) is/are respectively delimited, in each case seen in the radial direction, in a first flow region by the inner wall (3) on the inside, or by the intermediate wall (4) on the outside, and/or in a second flow region by the inner wall (3) on the inside and by the outer wall (5) on the outside, and/or in a third flow region by the intermediate wall (4) on the inside and by the outer wall (5) on the outside.
4. The fluid guiding device according to any one of the preceding claims, characterised in that the inner wall (3), the intermediate wall (4) and the outer wall (5) are connected to each other by means of radial webs (15), wherein in each case two of the radial webs (15) delimit the first flow chamber (20) and/or the second flow chamber (21) in the circumferential direction.
5. The fluid guiding device according to any one of the preceding claims, characterised in that the respectively two of the radial webs (15) are connected to each other on their end faces facing the first axial side by means of an inner flow directing wall (24) that connects the inner wall (3) and the intermediate wall (4) to each other and is spaced from the outer wall (5), and/or are connected to each other on their end faces facing the second axial side by means of an outer flow directing wall (25) that connects the intermediate wall (4) and the outer wall (5) to each other and is spaced from the inner wall (3).
6. The fluid guiding device according to any one of the preceding claims, characterised in that the inner flow directing wall (24) and/or the outer flow directing wall (25) is/are curved in the circumferential direction, in particularly in a continuous manner or only in a curvature region adjacent to the radial webs (15), and/or transition/s tangentially into the radial webs (15).
7. The fluid guiding device according to any one of the preceding claims, characterised in that the inner flow directing wall (24) and/or the outer flow directing wall (25) is/are inclined in the radial direction and/or in the tangential direction, and are inclined in opposing directions in particular.
8. The fluid guiding device according to any one of the preceding claims, characterised in that the outer flow directing wall (25) is immediately adjacent to an end face of the intermediate wall (4) that lies inward in the axial direction, and that the inner flow directing wall (24) engages the end face of the intermediate wall (4) via a connecting web that continues the intermediate wall (4).
9. The fluid guiding device according to any one of the preceding claims, characterised in that, in each of the axial regions, an inner flow directing wall (24) and an outer flow directing wall (25) alternatingly engage the respective intermediate wall region (11, 12) in the circumferential direction, such that the flow directing walls (24, 25) of the axial regions are arranged in rows spaced apart from each other in the axial direction.
10. The fluid guiding device according to any one of the preceding claims, characterised in that the first inner fluid port (16) and the second inner fluid port (18) have the same cross-section of flow, or that the first outer fluid port (17) and the second outer fluid port (19) have the same cross-section of flow.
11. The fluid guiding device according to any one of the preceding claims, characterised in that an end face (29) of the inner wall (3) that faces the first axial side is offset in the axial direction, in the direction of the second axial side, relative to a plane containing first end faces (31, 33) of the intermediate wall (4) and of the outer wall (5), and/or an end face (30) of the inner wall (3) that faces the second axial side is arranged offset in the axial direction, in the direction of the first axial side, relative to a plane containing second end faces (32, 34), opposite the first end faces, of the intermediate wall (4) and of the outer wall (5), particularly to form a reception chamber (27, 28) in each case, preferably for a ventilator device (36) and/or a cross-section adjustment device (38).
12. A ventilation apparatus (2), characterised by a fluid guiding device (1) according to any of the preceding claims.

Images