EP2107251A1 - Fan housing - Google Patents

Abstract

The compressor housing (1) comprises a radial fan receiving area (2) with a fluid flowing channel (7), a fluid outlet channel (5) and a fluid guiding unit (10). The dimension of the fluid guiding unit is smaller than the dimension of the fluid channel, in which the fluid guiding unit is arranged. An independent claim is included for a compressor device, particularly for a motor vehicle for ventilation of a motor vehicle interior.

Description

The invention relates to a fan housing for a radial fan device. Furthermore, the invention relates to a blower device with such a blower housing.

Blowers are always needed if an air flow is to be generated artificially. It does not matter whether it is to move air into a room, to move it out of a room, or to move air from one room to another. Of course, instead of air, it may also be another gas, which may also contain, for example, drops of liquid (mist) and / or solid particles (smoke).

In blowers there are a variety of characteristics, such as the maximum air flow rate, the pressure difference generated, the energy requirement of the blower, the available energy form (eg electrical Energy or the mechanical energy of a crankshaft), the space required by the blower, the insensitivity to contamination, the resistance to aggressive media and the noise generated during operation of the blower.

Depending on the intended use, different priorities may arise with regard to these characteristic values. If, for example, relatively high operating noises or a relatively large required installation space can be tolerated in one field of application, operating noise is particularly undesirable in other application areas and / or the available installation space is particularly limited.

Also, it is not uncommon that multiple blower devices are required in a single technical device for their operation. It is also possible that at different locations of such a technical device different priorities with respect to the characteristics of the blower used are present.

An example of such a technical device, in which a plurality of blowers of different designs are used, are motor vehicles, in particular land-based motor vehicles.

For example, automobiles include a fan that, at higher load conditions, causes additional cooling of the coolant radiator, oil cooler, and / or condenser of an automotive air conditioning system by exposure to an airflow. Here, it is particularly important to have the highest possible air throughput with the smallest possible space required.

Another fan is found in the air conditioning of the motor vehicle. Here, with the help of the blower, a fresh air supply into the interior of the motor vehicle in, a circulating air flow of the motor vehicle interior, or a mixture of both generated. The supplied or circulated air is thereby required (as far as realized in the specific form of the motor vehicle air conditioning) heated by a radiator, cooled by an evaporator (and dehumidified), cleaned by filters and distributed by air distributor on different exhaust nozzles in the motor vehicle interior. In addition to the smallest possible space and a larger air flow is especially relevant in the blowers used there, a particularly low operating noise. This applies in particular to the part of the operating noise which is emitted into the motor vehicle interior.

In addition to the absolute operating noise, the type of operating noise is also relevant. Thus, operating noise in certain, narrow frequency intervals are perceived as unpleasant (tonal noise, colloquially also referred to as "howling"), whereas the most uniform possible noise over all frequency ranges (so-called "white noise") is tolerated. In particular, low-frequency operating noise, in particular those which are in the range of about 50 Hz to 500 Hz, in particular in the range of about 75 Hz to 200 Hz, perceived as particularly unpleasant.

In order to produce as little disruptive operating noise as possible, various proposals have already been made for noise-reducing measures and noise-reducing devices.

One way of reducing noise, for example, is the use of quiet fan wheels as possible. However, the achievable noise reductions are so far not sufficient in practice to meet the increasing comfort requirements in the automotive sector.

Other measures include, for example, the use of sound insulating materials that are mounted on the insides of the air ducts. But even with such measures, the operating noise of the fan can not be reduced to a level that could meet the increasing comfort requirements in the automotive sector.

In the meantime, it has already been proposed to use active noise reduction (ANR) systems for reducing the noise level in the motor vehicle interior. However, such systems are still complex and expensive. In addition, only "unwanted noise" should be damped, but not conversations between the occupants themselves, the music system of the vehicle or even some outside noise such as sirens or loudspeaker announcements. This still presents the design of ANR systems with unsolved challenges.

Another starting point is the use of air-conducting elements, which are installed in certain places in the air ducts to influence the air flow or to produce in certain special areas on the contrary desired air turbulence, so as to the output of the blower operating noise as far as possible reduce. Such devices are made, for example CH 399 645 . DE-OS 1 501 958 . DE-GM 1 854 515 or DE-OS 29 29 140 become known in connection with Querstromlüftem. In this context, it has also been proposed to make the air guide elements adjustable in order to adapt to different operating conditions of the fan can.

In connection with centrifugal fans has also been proposed to provide the air-supplying frame with a Zargenring, or to provide a Zargenabdeckung to the flow as quiet as possible in the fan into it.

However, the air-conducting elements described so far show a usually insufficient (noise reduction).

The object of the invention is thus to propose a blower housing for radial fans, which has an improved noise emission behavior. Furthermore, the object of the invention is to propose a blower device with an improved noise emission behavior.

It is proposed to design a blower housing for a radial fan device which has at least one radial fan receiving space with at least one fluid inflow channel, at least one fluid outflow channel and at least one fluid guide device such that the extent of at least one fluid guide device is less than the extent of the fluid channel in which the fluid guide device is arranged. A fluid channel is to be understood in particular as meaning a fluid inflow channel and / or a fluid outflow channel. The inventors have surprisingly discovered that with many blowers, with regard to the operating noise generated, it is not only harmless to make the "length" of a fluid guiding device shorter than corresponds to the dimension of the fluid channel. But it can rather come in comparison with air guide elements, which pass through the fluid channel substantially completely, to reduced operating noise. In addition, the "shortening" of the air guiding devices can also lead to a reduction of the air attack cross section, so that the flow resistance facing the air flow can be reduced. This, in turn, can result in reduced fan performance, which can further reduce noise emissions. Even if a relatively small shortening of the length of the Fluidleitvorrichtung (s) can lead to a significant decrease in noise emission, it has proved to be advantageous if the expansion of the Fluidleitvorrichtung less than or equal to 75%, 70%, 66.67%, 65%, 60%, 55%, 50%, 45%, 40%, 35%, 33.33%, 30%, 25%, 20%, 15% , 10% and / or 5% of the corresponding extent of the air flow channel. In this context, it should be pointed out that the extent of a fluid guiding device is usually to be understood as meaning its width in the transverse direction of the direction of fluid flow. However, it may additionally or alternatively be the case width, the case height, the channel height and / or other dimensions. The thickness of the corresponding fluid guide device can be designed analogously to known Fluidleitvorrichtungen. In addition to the usually observable reduction in the total noise emission, the proposed device also often causes a reduction of the particularly disturbing low-frequency noise component, in particular in the frequency range of 50 Hz ≦ f ≦ 500 Hz, especially in the frequency range of 75 Hz ≦ f ≦ 200 Hz are in the context of the present description not only conventional radial fan, in which the air is supplied through the inside of a fan drum, and the air discharge in the tangential and / or radial direction, but also other designs, such as in particular cross-flow fan, in which both air supply and Air delivery in the tangential and / or radial direction, to understand. Mixed forms are of course conceivable. The radial fan compartment may be particularly in the case of "classic" radial fans in the form of a fan spiral. The fluid outflow channel may in particular be arranged at an angle relative to the tangential direction of the radial fan receiving space. In particular, angle ranges of 5 ° to 40 °, 10 ° to 35 °, 15 ° to 30 ° and 20 ° to 25 ° between the tangential direction and the direction of the Fluidabströmkanals can be particularly advantageous.

A meaningful development of the blower housing may result if at least one fluid guiding device is arranged in a fluid outflow channel. Tests have shown that the noise cancellation may be particularly effective when at least one of the Fluidleitvorrichtungen is arranged in a Fluidabströmkanal. This can lead to an interaction with otherwise particularly strongly noise-causing fluid which has been accelerated by the fan. This can cause a noticeably lower and / or more pleasant operating noise of the blower.

Likewise, experiments have shown that it can additionally or alternatively be advantageous if at least one fluid guiding device is arranged in the area of a radial fan receiving space and / or adjacent to a radial fan receiving space in the fan housing. Such a (optionally additional) arrangement of a fluid-conducting device or a plurality of fluid-conducting devices can also result in particularly great noise-reduction effects. In particular, the positioning region may be an area that lies between a region of the so-called fan spiral (or a region corresponding thereto in the case of another embodiment of the fan housing) and the fan wheel. An arrangement of the fluid guiding device (s) has proven to be particularly advantageous, in which the fluid guiding device (or the fluid guiding devices) tends to be arranged closer and / or immediately adjacent to the housing wall (in particular the fan spiral).

It is furthermore possible for the expansion of the at least one fluid guiding device to be smaller in a direction parallel to the axial direction of the radial fan receiving space and / or in a direction perpendicular to the axial direction of the radial fan receiving space and / or in a direction parallel to an adjacent wall of the fluid channel is, as the extent of the fluid channel in which the fluid guide is arranged. With such an orientation usually the best noise reduction effects can be effected.

Here, a usually occurring narrow fluid passage cross section between the fluid guide device and the wall of the fluid channel seems to have an advantageous effect on the noise emission behavior. The distance between wall and fluid guiding device should not be more than (less than) 30%, 25%, 20%, 15%, 10% or 5% of the channel width. Experiments have shown that particularly good acoustic properties can result if the relationship 0.2≤ | α / B | ≤ 0.4, where a denotes the distance between the wall and the air guide element and B the channel width or the channel height (depending on the arrangement of the air guide elements, if necessary another value should also be used). It is particularly surprising that it is precisely an arrangement of the fluid guiding device that is selected perpendicular to the previous arrangement directions that can have a particularly low noise level.

A further possible development of the blower housing results when at least one fluid channel, in particular at least one fluid outlet channel, extends at least partially along a direction lying in the radial plane of the radial fan receiving space and / or at least one fluid channel, in particular at least one fluid inflow channel at least in regions along a plane perpendicular to the radial plane the radial fan receiving space lying direction. Previous experimental results have shown that fluid directors are particularly effective when implemented in conjunction with the "classic" radial fan assembly. Of course, angles are also possible which deviate slightly from the proposed "ideal shape", in particular if the deviation is less than 10 °, particularly preferably less than 5 °. Additionally or alternatively, it is also possible that the air guide elements are arranged in a certain (preferably variable) angle of attack with respect to the regular Luftanströmrichtung. In particular An angle of attack α in the range of 0 ° ≤α≤ 60 ° proved to be particularly suitable.

Another possible design of the blower housing results when at least one fluid guide device is arranged in an overflow region which is close to an approach of fluid inflow channel and fluid outflow channel and / or in the region of a connecting edge of two fluid channel walls, in particular in the region between inlet frame and impeller or frame gap located. The areas mentioned are usually characterized in that particularly large pressure differences, in particular in relation to the other areas of the blower device, can occur in their area. The use of the Fluidleitvorrichtungen at the proposed location therefore proves to be particularly effective in the rule. The overflow region may in particular be the region in which the fluid supply channel of the fan cowl and the fluid discharge channel lie directly adjacent to one another. Due to never completely avoidable leaks in practice these are usually fluidly connected to a certain extent. Furthermore, the overflow region may in particular be the (acute-angled) connection region between the radial fan receiving space and the fluid discharge channel. Also in this area are usually very high pressure differences and there is due to sealing problems in practice before a certain fluidic connection.

In particular (but not only) in this context, it may prove useful if the fan housing is designed such that at least one Fluidleitvorrichtung is arranged at an angular distance from the region of a connecting edge of two fluid channel walls, between 10 ° and 60 °, preferably 20 ° to 50 °, more preferably 30 ° to 40 °, in particular 35 °. The term "area of a connecting edge of two fluid channel walls" can be understood in particular as a housing tongue which separates a fluid drain passage from a radial fan receiving space. Since such a housing tongue is often rounded, it is of course also possible to use a radial center (for example, center of a circle, ellipse focal point or the like) of the housing tongue as a reference region (the same can of course also apply to other fluid channel connections). In particular, said angular ranges have proven to be particularly advantageous, in particular with respect to a particularly large noise reduction capacity. Incidentally, the angle range can be understood to mean that a central region of one or more fluid-conducting elements at least approximately coincides with an angle limb. Additionally or alternatively, it is also possible for one or more fluid guide elements to lie substantially completely within the stated angular range. Of course, other definitions are conceivable.

Furthermore, it is proposed that in the blower housing, at least one fluid guide device has a shape having one and / or more shape features taken from the group, the wing-like shapes, teardrop-shaped shapes, ellipse-like shapes, plate-like shapes, rectangular shapes, triangular-shaped shapes, trapezoidal shapes Shapes, rounded shapes, shapes with convex boundary edges, shapes with concave boundary edges, and shapes with wavy boundary edges. The proposed forms have proven to be particularly suitable in the previous experiments. The convex or concave boundary edges can be arranged especially on windward or leeward areas of the fluid guide device.

Furthermore, it is proposed that in the blower housing at least one fluid guiding device is adjustable, in particular rotatable and / or displaceable. Such a design, the fan housing can be adapted to the respective operating condition. Usually In fact, if the optimal shape and arrangement of the fluid directing device (s) also changes with changing operating conditions. As a result of the adjustable arrangement of the fluid-guiding device (s), it is therefore usually possible to cover a larger operating range.

It is also possible that, in the blower housing, the main plane of at least one fluid guiding device runs parallel to the axial direction of the radial fan receiving space and / or is perpendicular to the axial direction of the radial fan receiving space. With such an arrangement of the Fluidleitvorrichtung can result in even better noise reduction effects.

Once again improved noise reduction effects can also result if the fan housing is provided with a plurality of fluid guide devices, in particular with an even number of fluid guide devices, which are preferably arranged symmetrically. Here, the positive effects of the individual Fluidleitvorrichtungen can at least partially add, possibly even mutually positively influence, so that in the sum of a further enhanced noise reduction effect results. The symmetrical arrangement of the fluid guiding devices may relate in particular to their orientation and / or arrangement with respect to the corresponding fluid channel.

Furthermore, a blower device, in particular a blower device for motor vehicles, preferably a blower device for ventilating a motor vehicle interior, is proposed, which has at least one radial fan and which has a blower housing with the structure described above. Such a blower device can be developed in an analogous manner as described with respect to the blower housing be and has the advantages and properties described in an analogous manner.

Fig. 1:

ein erstes Ausführungsbeispiel eines Gebläses mit einem Luftleitelement in schematischer, perspektivischer Ansicht;

Fig. 2:

das in Fig. 1 gezeigte Ausführungsbeispiel in schematischer Draufsicht von oben;

Fig. 3:

das in Fig. 1 gezeigte Ausführungsbeispiel in schematischer Draufsicht von vorne;

Fig. 4:

schematische Draufsichten auf Ausführungsbeispiele von Luftleitelementen;

Fig. 5:

schematische Querschnitte durch Ausführungsbeispiele von Luftleitelementen;

Fig. 6:

ein zweites Ausführungsbeispiel eines Gebläses mit einem Luftleitelement in schematischer Draufsicht von vorne;

Fig. 7:

das in Fig. 6 dargestellte Ausführungsbeispiel in schematischer Draufsicht von oben;

Fig. 8:

ein drittes Ausführungsbeispiel eines Gebläses mit zwei Luftleitelementen in schematischer Draufsicht von oben;

Fig. 9:

den mit Luftleitelementen versehenen Luftzuführungsbereich des in Fig 8 dargestellten Ausführungsbeispiels eines Gebläses in schematischer Ansicht.

In the following the invention will be explained in more detail by means of advantageous embodiments and with reference to the accompanying drawings. It shows:

Fig. 1:

a first embodiment of a blower with an air guide in a schematic, perspective view;

Fig. 2:

this in Fig. 1 embodiment shown in a schematic plan view from above;

3:

this in Fig. 1 shown embodiment in a schematic plan view from the front;

4:

schematic plan views of embodiments of air guide elements;

Fig. 5:

schematic cross sections through embodiments of air guide elements;

Fig. 6:

a second embodiment of a blower with an air guide in a schematic plan view from the front;

Fig. 7:

this in Fig. 6 illustrated embodiment in a schematic plan view from above;

Fig. 8:

a third embodiment of a blower with two air guide elements in a schematic plan view from above;

Fig. 9:

provided with air guide elements air supply area of in Fig. 8 illustrated embodiment of a blower in a schematic view.

In Fig. 1 is shown in a schematic, perspective view of a blower 1 of an automotive air conditioning system with a radial fan 3. The radial fan 3 is accommodated in a receiving space suitable for radial fan wheels 3, a so-called fan spiral 2. For illustrative reasons is in Fig. 1 only a partial section of the blower 1 shown.

In Fig. 1 is to recognize on the right side of the tongue 4, which separates the air outlet channel 5 of the fan spiral 2. The air delivered by the radial fan 3 passes through the air outlet channel 5 and is discharged for example via suitable air distributor and Luftausströmerdüsen in the motor vehicle interior and possibly pre-processed in a conventional manner with the help of radiators, evaporators and filters, if not already in the flow direction seen before the radial fan 3 is done.

On the air inlet side 6 of the radial fan 3, a frame 7 is provided, on which a frame collar 8 is fixed, which extends a little way into the inner cavity 9 of the radial fan 3 into it.

Adjacent to the air inlet side 6 of the radial fan 3 luvseitig an air guide 10 is disposed in front of the tongue 4. The air guide 10 is attached to a support rod 11. In the present embodiment, the support rod 11 is connected to (not shown here) servomotors, so that the air guide 10 on the one hand about the axis of the support rod 11 pivoted (double arrow A) can be on the other hand moved (double arrow B) can be. As a result, the air guiding element 10 can be placed closer to the tongue 4 or farther away from the tongue 4 so that its angle of attack to the incoming air or its distance from the tongue 4 can be adapted to the respective operating conditions.

In the present embodiment, the air guide element 10 is formed with a triangular shape and plate-like cross-section. However, other shapes may be used.

As Fig. 1 In the embodiment shown, the height of the air guide element 10 is approximately one third of the total height of the air outlet channel 5. The height of the air outlet channel 5 corresponds (in the illustrated embodiment) (approximately) to the height of the fan spiral 2, the height of the radial fan 3 or the height of the tongue 4. As already mentioned, the air guide element 10 despite its small dimensions effective noise reduction, especially in the low-frequency range cause.

In Fig. 2 is that in Fig. 1 see fan 1 shown in a plan view from above. In other words, the view corresponds to the viewing direction from the air inlet side 6.

In Fig. 3 is that in the Fig. 1 and Fig. 2 shown blower 1 additionally shown in a side view. Furthermore, in Fig. 3 the drive motor 12 of the radial fan 3 and the drive shaft 13 of the radial fan 3 shown.

Only for the sake of completeness, it is pointed out that the bottom and the lid of the in Fig. 1 to Fig. 3 shown blower housing 20 are not shown for reasons of better visibility.

In Fig. 4 For example, several different conceivable forms for air guiding elements 10a-10e are shown.

At the in Fig. 4a illustrated, substantially triangular air guide element 10a is the air flow facing windward edge 14a of the Luftsftelement 10a convexly curved. In contrast, the air flow facing Luvkante 14b of in Fig. 4b illustrated air guide element 10b concave. When in Fig. 4c illustrated air guide 10c is it is a kind of mixed form of convex 14a and concave 14b windward edge, so that a "wave-shaped" windward edge 14c results.

As in the Fig. 4d and 4e is shown, a rectangular basic shape 10d or a trapezoidal basic shape 10e can be used for the air guide. Again, the windward edge 14d, 14e not only (as shown in the drawing) can be rectilinear, but also convex, concave or wavy.

Incidentally, in all embodiments, the sill edge 15a-e or one or more side edges 16a-e of the respective air guide element 10a-e may be convex, concave and / or wave-shaped.

In Fig. 5 By way of example, different conceivable cross-sectional shapes 17g-j of air guiding elements 10g-j are shown. The cross-sectional shape 17g-j, for example, plate-like 17g, drop-like 17h, wing profile-like 17i or elliptical 17 j be formed.

It is also possible, any conceivable shaping (see, eg Fig. 4 ) with any conceivable cross-sectional shape (cf., for example Fig. 5 ) to combine.

In Fig. 6 Finally, a second embodiment of a blower 18 is shown. Fig. 7 shows that in Fig. 6 illustrated fan 18 seen from the side.

The blower 18 largely corresponds to the basic construction in FIG Fig. 1 shown blower 18. In contrast to the in Fig. 1 shown blower 1, however, the air guide element 19 is formed and arranged differently in the present blower 18. In the illustrated embodiment, it is a horizontally disposed air guide 19, which is arranged luvseitig the tongue 4, and about half as wide as the width of the Luftausströmkanals 5 corresponds.

In analogy to in Fig. 1 illustrated blower 1 is also present, the air guide 19 rotatably (double arrow C) and slidably arranged (double arrow B), so that it can be adapted to different operating conditions of the blower 18.

In the Figs. 8 and 9 is a further, third embodiment of a blower 21 is shown. It shows Fig. 8 the blower 21 in a schematic plan view from above, while Fig. 9 the arrangement of the air guide elements 22, 23 of the blower 21 in the relevant air guide region of the blower housing 20 is illustrated.

How out Fig. 9 can be seen, the blower 21 in the present case two air guide elements 22, 23. Due to the in Fig. 8 selected perspective, only one of the two air guide elements 22, 23 (namely, the upper air guide 22) can be seen. The air guide elements 22, 23 are each mounted on a support rod 11 and can be rotated via an actuator (not shown here) (double arrow C). In this way, the air guide elements 22, 23 have a variable angle of attack α ₁ , α ₂ with respect to the Luftanströmrichtung 27. In principle, it is possible that the two air guide elements 22, 23 are each provided with a separate actuator, so that the angle of attack α ₁ , α ₂ can be chosen to be different in size. In the present case in the Figs. 8 and 9 illustrated embodiment, the two air guide elements 22, 23, however, driven by a mechanism of a common actuator, wherein the mechanism is carried out in the present embodiment, the two angles α ₁ α ₂ are equal in magnitude, but in a different direction , The angle of attack α ₁ , α _{2 of} the two air guide elements 22, 23 are therefore symmetrical.

The distance a ₁ , a _{2 of} the two air guide elements 22, 23 to the respectively adjacent channel wall 24, 25 (upper channel wall 24, lower channel wall 25) is in each case selected to be the same size and is 0.3 times the channel width B (in the presently illustrated embodiment). Distance between upper channel wall 24 and lower channel wall 25). Thus, the position of the two air guide elements 22, 23 is symmetrical. The distance a ₁ , a ₂ chosen in the present exemplary embodiment has proven particularly advantageous in practice as acoustically.

The arrangement of the air guide elements 22, 23 relative to the tongue 4 is particularly in Fig. 8 seen. In the present embodiment shown, the air guide elements 22, 23 are arranged lying within the fan spiral 2, between Radiellüfterrad 3 and blower housing 20. In other words, the air guide elements 22, 23 are arranged leeward relative to the tongue 4. The distance between the air guide elements 22, 23 and the tongue 4 is selected so that the air guide elements 22, 23 are completely within an angular range β of present β = 30 °. Since in the presently illustrated embodiment of the blower 21, the tongue 4 is rounded, serves as a reference point for a first leg 27 of the angular range β of the circle center 26 of the rounded portion of the tongue 4. As a reference for the vertex of the angle β is used in this case the axis of rotation 28 of Radial fan 3, which corresponds approximately to the center of the bent portion of the housing spiral 2.

For the sake of completeness, it is pointed out that it is of course possible to use individual aspects of the different exemplary embodiments described (in particular of the exemplary embodiment according to FIG Fig. 1 to 3 , the embodiment according to 6 and 7 and the embodiment according to 8 and 9 ) to combine with each other. So it is possible, for example, that in 8 and 9 illustrated embodiment with is provided only a single air guide 22, which additionally or alternatively according to the in Fig. 1 to 3 illustrated embodiment is arranged. It is also possible, the position and / or number of the spoiler 10 of the in Fig. 1 to 3 illustrated embodiment of a blower 1 according to the in 8 and 9 illustrated embodiment of a blower 21 to vary.

Claims (12)

Blower housing (1, 18, 21) for a radial fan device (3), comprising at least one radial fan receiving space (2) with at least one fluid inflow channel (7), at least one fluid outflow channel (5), and at least one fluid guide device (10, 19, 22, 23). , characterized in that the extension of at least one Fluidleitvorrichtung (10, 19, 22, 23) is less than the extension of the fluid channel (2, 5, 7), in which the Fluidleitvorrichtung (10, 19, 22, 23) is arranged. Fan housing (1, 18, 21) according to claim 1, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) in a Fluidabströmkanal (5) is arranged. Fan housing (1, 18, 21) according to claim 1 or 2, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) in the region of a radial fan receiving space (2) and / or adjacent to a radial fan receiving space (2) is arranged. Fan housing (1, 18, 21) according to any one of the preceding claims, characterized in that the extension of the at least one Fluidleitvorrichtung (10, 19, 22, 23) in a direction parallel to the axial direction of the radial fan receiving space (2) extending direction and / or in a direction perpendicular to the axial direction of the radial fan receiving space (2) and / or in a direction parallel to an adjacent wall of the fluid channel (5, 7) is less than the extent of the fluid channel (2, 5, 7), in which the Fluidleitvorrichtung (10,19, 22, 23) is arranged. Fan housing (1, 18, 21) according to one of the preceding claims, characterized in that at least one fluid channel (2, 5, 7), in particular at least one Fluidabströmkanal (5), at least partially along a lying in the radial plane of the radial fan receiving space (2) Direction runs and / or at least one fluid channel (2, 5, 7), in particular at least one Fluidzuströmkanal (7) at least partially along a direction perpendicular to the radial plane of the radial fan receiving space (2) extending direction (Fig. 1). Fan housing (1, 18, 21) according to any one of the preceding claims, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) in an overflow region (4, 8) is arranged, which is in the vicinity of an approximation of Fluidzuströmkanal (7) and Fluidabströmkanal (5) and / or in the region of a connecting edge (4) of two fluid channel walls is located. Blower housing (1, 18, 21) according to one of the preceding claims, in particular according to claim 6, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) at an angular distance (β) from the region of a connecting edge (4) of two fluid channel walls is arranged, which is between 10 ° and 60 °, preferably 20 ° to 50 °, more preferably 30 ° to 40 °, in particular 35 °. Fan housing (1, 18, 21) according to any one of the preceding claims, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) has a shape having one and / or a plurality of shape characteristics, which are taken from the group, the wing-like shapes (17j), teardrop-shaped shapes (17h), ellipse-like shapes (17j), plate-like shapes (17g), rectangular shapes (10d), triangular-like shapes (10a, 10b, 10c), trapezoidal shapes (10e), rounded shapes, shapes with convex boundary edges (14a), shapes with concave boundary edges (14b), and shapes with wavelike boundary edges (14c). Blower housing (1, 18, 21) according to one of the preceding claims, characterized in that at least one Fluidleitvorrichtung (10, 19, 22, 23) adjustable, in particular rotatable (A, C) and / or displaceable (B) is executed. Blower housing (1, 18, 21) according to any one of the preceding claims, characterized in that the main plane of at least one Fluidleitvorrichtung (10, 19, 22, 23) parallel to the axial direction of the radial fan receiving space (2) extends (Fig. 1) and / or vertically to the axial direction of the radial fan receiving space (2) is (Fig. 6). Blower housing (1, 18, 21) according to one of the preceding claims, characterized by a plurality of Fluidleitvorrichtungen (10, 19, 22, 23), in particular by an even number of Fluidleitvorrichtungen (10, 19, 22, 23), which preferably symmetrical are arranged. Blower device, in particular a blower device for motor vehicles, preferably a blower device for ventilation of a motor vehicle interior, comprising at least one radial fan (3), characterized by a fan housing (1, 18, 21) according to one of claims 1 to 11.

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