EP0609727A1 - Fan casing for the arrangement in a passage opening - Google Patents

Abstract

A fan casing 1 for arrangement in a passage opening 5 is proposed, which, as well as a space-saving design, not only has a construction which is easy to maintain and assemble, but, in the case of the installation of motor-driven fans, also enables high efficiency of the forced air conveyance. It is equipped with an outer covering hood 10 made of moulded, preferably thermoformed plastic sheet material, which is provided on at least three sides with a bearing or supporting flange 11 parallel to the installation plane, but along the fourth side, for bounding an air passage 14, has a boundary edge 34 spaced from the installation plane, the covering hood 10 being connected in each case via the supporting flange 11 to a wall, a roof, a ceiling, a board, a panel or the like. This fan casing 1 is characterised by an inner, frame-like lining part 3 which is provided with a hood-like shaped-out portion 6 arranged externally in front of the passage opening 5, wall, roof, ceiling, board, panel 2 or the like, and also in that the boundary walls of this hood-like shaped-out portion 6 assume and/or maintain, as a whole, a minimum distance from the inner face of the outer covering hood 10, and in that the opening edge 15 of the hood-like shaped-out portion 6 of the inner lining part 3 is situated at a distance from the boundary edge of the air passage 14 of the covering hood 10. <IMAGE>

Description

The invention relates to a fan housing for arrangement in a passage opening of a wall, a roof or a ceiling. In particular, the fan housing is suitable for arrangement in a passage opening of a plate, a panel or the like.

According to the generic term of the main claim, it is a fan housing with an outer cover made of molded, for example also deep-drawn, plate material, primarily plastic, which is provided on at least three sides with a system support flange parallel to the installation plane, but along the fourth side to restrict air passage has a boundary edge spaced from the installation plane. The cover is connected to the wall, the roof, the ceiling, the plate, the panel or the like via the contact or support flange. Such a fan housing is known from US-A-3 877 357.

In a fan housing of this type which has become known from GB-A-785 606, an inner, frame-like covering part serves, on the one hand, to shield the edge area of the passage opening of a plate, a panel or the like against weather influences and, on the other hand, is used to hold or store a flap , by means of which the passage opening can optionally be closed or released. The outer cover of this fan housing, however, has the task of covering the actual passage opening and thereby causing a multiple, for example, S or Z-shaped deflection of the continuous air flow.

It is essential according to this prior art that the two components forming the fan housing can be formed from flat plate material, in particular thermoformed from plastic plates, before they are subsequently assigned to the passage opening in the plate, the panel or the like from opposite sides for the purpose of optimal shielding will.

A disadvantage of the last-mentioned known fan housing, however, is the assignment of the flap forming the closure to the inner frame-like covering part, specifically at a point which lies in the transition region to the outer cover hood. As a result, it is not possible to accommodate motor-driven blowers for forced air delivery - protected against weather influences - in the fan housing. That is, with the help of the known fan housing, only a pressure differential operation with a relatively low and uneven air throughput is possible.

In the case of the fan housing belonging to the state of the art through US Pat. No. 3,877,357, a flap forming the closure is assigned to the outer covering hood seated on the wall or roof surface in such a way that a motor-driven blower can also be accommodated therein without problems. that is protected from the weather at least when the flap is closed.

A common disadvantage of both the fan housing according to GB-A-785 606 and the fan housing according to US-A-3 877 357 lies in a less than optimal thermal insulation design.

It is conceivable and possible to remove the defective thermal insulation by applying a special thermal insulation layer, for example made of foam material, mineral wool, non-woven fabric or the like, for example on the inside surfaces of the housing. As a result, however, the flow resistance of the air through the fan housing is undesirably increased if the thermal insulation layer on the air duct side is not at the same time equipped with an additional, smooth-surface cover, for example a film covering.

Thermal insulation measures of this type are of course also complex and expensive.

In the case of fan housings formed by reshaping flat plate material, in particular plastic plates, the advantage is often used that of the fan housing with a surface extension parallel to the installation plane of the wall, roof, ceiling, plate, panel or the like provide which is dimensioned much larger than the installation opening provided in the element in question. This then results in the possibility of forming or shielding the entire weather-side surface of a plate, a panel or the like serving as a support for the fan housing in one piece or without interruption by the construction material of the fan housing itself (see, for example, FIGS. 9 and 10 of US-A-4 123 968).

The invention aims to provide a fan housing of the type already explained at the beginning and covered by the preamble of the main claim, which avoids the disadvantages of the fan housing according to the stated prior art, but at the same time combines their advantages. It is therefore an object of the invention to provide a fan housing of the generic type which, in a space-saving design, not only has a maintenance- and assembly-friendly design, but also allows a high efficiency of the forced air delivery when installing motor-driven blowers.

The solution to this problem is achieved according to the invention by the characterizing part of claim 1, according to which an inner, frame-like covering part is provided with a hood-like shape upstream of the passage opening of the wall, roof, ceiling, plate, panel or the like , the boundary walls of which assume and maintain a minimum distance from the inner surfaces of the outer covering hood everywhere, while the opening edge of the hood-like shape of the inner covering part is located at a distance from the boundary edge for the air passage of the covering hood.

It has a particularly advantageous effect that relatively large-volume cavities are enclosed between the inner covering part and the outer covering hood and the resting air layer therein has a high thermal insulation effect. In addition, the limitation of the air routing path formed by the hood-like shape of the inner trim part surprisingly leads, at least in a certain way of installing motor-driven blowers, to an air throughput which is greater than when the blowers in question blow free.

With such a fan housing, an inner, frame-like covering part made of molded, e.g. deep-drawn plastic sheet material used, the frame legs - similar to GB-A-785 606 - have a parallel to the installation plane support or support flange and a substantially transversely extending from this into the passage opening cover flange and in which both the frame-like trim part and the cover is connected to the wall, the roof, the ceiling, the plate, the panel or the like via the contact or support flange, then it is advantageous if the covering part with its hood-like shape forms the passage opening of the wall , the roof, the ceiling, the plate, the panel or the like protrudes from the inside to the outside.

In a further development of this solution, the invention is also characterized in that the inner, frame-like covering part is provided with a hood-like shape protruding outwards through the passage opening of the wall, roof, ceiling, plate, panel or the like the boundary walls of this hood-like formation occupy and / or maintain a minimum distance everywhere from the inner surfaces of the outer cover hood, and that the opening edge of the hood-like formation of the inner trim part is located at a distance from the boundary edge for the air passage of the cover hood.

A design of the fan housing, in which the opening edge of the hood-like shape of the inner trim part runs parallel to the boundary edge of the air passage of the outer cover hood and is arranged in a plane opposite this, has proven itself according to the invention. It can then namely the opening edge of the hood-like shape of the inner trim part with the boundary edge of the air passage of the outer cover by a profile insert frame, which in turn is suitable as a carrier for a pivot bearing of a closure flap.

The heat-insulating function of the fan housing is optimized according to the invention in that on the one hand the profile insert frame and on the other hand the boundary edge of the passage opening in the wall, the roof, the ceiling or in the plate, the panel or the like. Between the inner Closing part and the outer cover maintains air space and consequently delimits a highly heat-insulating, resting air cushion. The double-shell design of the fan housing also gives it particularly high dimensional stability.

The invention further provides that the passage opening in the wall, the roof or the ceiling, in particular in the plate, the panel or the like., On the inside has a fold-like offset edge region in which the contact or support flange of the inner trim part at least is received flush, while the abutment or support flange of the cover covers the outside of this wall, this roof, this ceiling, in particular this plate, this panel or the like, over a large area. The latter partial feature is already known per se in fan housings, as is shown, for example, by US Pat. No. 4,123,968.

It has proven particularly useful for a heat-insulating design of a ventilation device with a fan housing according to the invention if the plate, the panel or the like consists of a plastic rigid foam material with which the contact or support flanges of Cover part and cover hood are inextricably connected, for example are firmly glued or welded.

According to the invention it is also proposed to connect the closure flap to the fan housing by means of a film hinge joint acting over the entire length of the closure flap, this film hinge joint consisting of a fastening profile and a holding profile which are connected to one another by an elastic material section which is connected to the fastening profile and the holding profile is generated in the same manufacturing step, in particular by composite extrusion.

It is also provided that the holding profile of the film hinge joint is pushed onto a corresponding edge profile of the closure flap and / or is locked with it.

In fan housings with the training features shown above, built-in axial fans, in particular, can be used as motor-driven blowers, both individually and in groups of one another, as are usually used to a large extent for cooling electronic and electrical components in computers, control cabinets or the like. Such built-in axial fans are mostly operated with extra-low voltage direct current.

According to the invention, it has proven particularly useful if each motor-driven fan within the fan housing assumes an inclined position both to the level of the internal air passage and to the closure level of the closure flap, and the closure flap is at least almost 90 ° pivoted from its closed position to its open position. It has been shown that especially this installation position of the motor-driven blowers in a fan housing with the above-mentioned training features leads to an air flow rate which does not negligibly exceed the nominal power of the blowers in question with a free-blowing arrangement.

An installation position for motor-driven blowers inclined against the plane of the air passage of fan housings is admittedly e.g. by FR-A-1 569 326, known per se. Here, however, no hood-like shape with an approximately quarter-circular shape is used as the air duct, which could minimize the flow resistance for the air.

That the mode of operation of ventilation devices designed for blower operation can be influenced by a suitable design of the air duct in a manner which produces a so-called siphon effect and thereby conveys more air than would be the case with the blower alone in free-blowing operation already taught for example with DE-C-15 03 511 (see column 5, lines 7 to 11).

The invention also provides that each motor-driven blower, which is preferably designed as an axial fan, has an angular position of approximately 45 ° to the inner air passage opening in the air duct, which is delimited by the hood-like shape of the inner, frame-like cladding part, with its installation frame, so to speak, its rotor axis a chord lies to the quarter circle.

In areas separated from the air duct of the hood-like shape of the inner, frame-like covering part, the actuator for opening and closing the closure flap, as well as electrical and electronic switching and control elements, which are provided for the proper operation of a ventilation device and in particular for coordination, can be accommodated serve the cooperation of fans and flap.

It is also important that all functional components of the ventilation device for carrying out maintenance, exchange and repair operations can be made accessible from the interior of the room, i.e. without removing the fan housing, in a similar manner, for example by means of US-A-2 665 625 and also US-A-3,759,158 has already been proposed.

A fan housing using at least the features of claim 1 can also be developed, for example based on US Pat. No. 2,665,625, in such a way that the motor-driven blower (s), e.g. Axial fan (s), resting on a support plate, for example, profiled in a bowl-like or trough-like manner and thereby stabilized, which, with its boundary edges, averted from both the outer covering hood and the hood-like shape of the inner, frame-like covering part (rear or lower ) Side of the flat component is supported below and outside of its passage opening.

The boundary edges of the cup-shaped or trough-shaped profiled support plate can form support flanges, the upper reference plane of which rests on the flat or rear side outside or next to the passage opening and which is connected to this component - e.g. by screws or other fasteners - be brought into detachable connection. This can be achieved, if necessary, that the motor-driven blower (s) are accommodated with a part of their axial height below or outside the actual fan housing in the cup-shaped or trough-shaped profiled support panel, while the remaining part of the axial height through the passage opening in the fan housing engages (see, for example, US-A-2 665 625).

Since the fastening elements for the support panel on the back or underside of the flat component are exposed, that is to say are easily accessible, the support panel with the motor-driven blowers resting thereon, for example for carrying out cleaning and maintenance work, can be removed from the interior of the fan housing at any time.

The cup or trough-shaped profiled support panel can be equipped with a number of air intake openings corresponding to the number of motor-driven blowers, which preferably have a funnel-like or trumpet-like edge profile.

In addition to the cup or trough-shaped profiled support panel, a grid or trough-shaped grid screen can also be attached to the underside of the flat component.

While the support part for the motor-driven fan according to US-A-2 665 625 advantageously engages with its area immediately adjacent to the support flange in the passage opening of the planar component from the rear or underside, the support panel used according to the invention can also be used with its whole Height outside the actual fan housing come to rest. Therefore, at least part of the axial overall height of each motor-driven fan can also be located outside the actual fan housing and also below the flat component carrying it. This arrangement is advantageous if the outer cover of the fan housing should only protrude the outside of the wall, roof, ceiling, plate, panel or the like with the lowest possible height (see US Pat. No. 2,665,625 ).

In a further embodiment of a fan housing for arrangement in a passage opening of a wall, a roof, a ceiling, in particular in a plate, a panel or the like, an outer cover made of molded, for example deep-drawn plate material, primarily made of plastic, is also used , which is provided on at least three sides with a bearing flange or support flange parallel to the installation plane, but along the fourth side to delimit an air passage has a boundary edge spaced apart from the installation plane. The cover is connected to the wall, the roof, the ceiling, the plate, the panel or the like via the support flange.

This fan housing is characterized according to the invention in that an inner covering part with a passage opening of the wall, the roof, the ceiling, the plate, the panel or the like. Upstream, hood-like shape is provided, that the boundary walls of this hood-like shape everywhere the inner surfaces of the outer cover at least obvious, and that in the inner Cladding part is accommodated a rotating body which can be displaced angularly between two rotary end positions and in which at least one motor-driven fan, for example an axial fan, is seated.

It has proven itself in this type of ventilation housing that the longitudinal edges of the walls of the rotating body can be placed against stops in the interior of the hood-like formation in both rotary end positions and thereby either block the interior of the fan against air passage or enable it for air passage.

It is also advantageous in this case that the inner covering part with a contact flange lies within the outer cover and is supported there next to the edge of the passage opening against the outside of the wall, the roof, the ceiling, the plate, the panel or the like.

It is also within the scope of the invention that the opening edge of the hood-like shape of the inner covering part is located at a distance in front of the boundary edge for the air passage of the covering hood, and that between the limiting edge for the air passage of the covering hood and the opening edge of the hood-like shape of the inner covering part is preferably a weather protection body and possibly also an insect or bird protection grid can be used.

Finally, here the passage opening of the wall, the roof, the ceiling, the plate, the panel or the like. On the inside can also be assigned a bowl-shaped or trough-shaped shielding molding, which at least partially consists of a perforated or mesh screen .

Fig. 1

im Querschnitt ein in eine Platte oder ein Paneel integriertes Lüftergehäuse in dem Einbaubereich für motorbetriebene Axialgebläse,

Fig. 2

einen der Fig. 1 entsprechenden Querschnitt durch das in eine Platte bzw. ein Paneel integrierte Lüftergehäuse im Einbaubereich für den Stellantrieb der Verschlußklappe sowie der Steuerungselektrik und/oder -elektronik,

Fig. 3

eine Rückansicht des Lüftergehäuses

Fig. 4

einen Längsschnitt durch das Lüftergehäuse entlang der Ebene IV-IV in den Fig. 1 und 2,

Fig. 5

in größerem Maßstab den in Fig. 1 mit V gekennzeichneten Ausschnittbereich und eine Variante als Nebendarstellung.

Fig. 6

einen der Fig. 1 entsprechenden Querschnitt durch ein in eine Platte oder ein Paneel integriertes Lüftergehäuse, jedoch mit einem gegenüber der Fig. 1 abgeänderten Einbaubereich für motorbetriebene Axialgebläse,

Fig. 7

einen Schnitt entlang der Linie VII-VII in Fig. 6,

Fig. 8

eine Unteransicht der Fig. 6 in Pfeilrichtung VIII gesehen,

Fig. 9

einen der Fig. 1 ähnlichen Querschnitt durch ein in eine Platte oder ein Paneel integriertes Lüftergehäuse mit einer weiteren Variante des Einbaubereichs für motorbetriebene Axialgebläse bei gegen Luftdurchtritt abgesperrtem Lüfterinnenraum,

Fig. 10

eine der Fig. 9 entsprechende Darstellung, jedoch mit für den Luftdurchgang freigegebenem Lüfterinnenraum,

Fig. 11

eine Ansicht des Lüftergehäuses in Pfeilrichtung XI der Fig. 9 und 10,

Fig. 12

einen Schnitt entlang der Linie XII in Fig. 10, während

Fig. 13

in größerem Maßstab einen Ausschnitt aus Fig. 1 für eine Einbauvariante der motorbetriebenen Axialgebläse in das Lüftergehäuse wiedergibt.

The invention is described below with reference to the drawing using examples. Show it

Fig. 1

in cross section a fan housing integrated in a plate or panel in the installation area for motor-driven axial fans,

Fig. 2

1 shows a cross section corresponding to FIG. 1 through the fan housing integrated in a plate or panel in the installation area for the actuator of the closure flap and the control electronics and / or electronics,

Fig. 3

a rear view of the fan housing

Fig. 4

2 shows a longitudinal section through the fan housing along the plane IV-IV in FIGS. 1 and 2,

Fig. 5

on a larger scale the cutout area marked with V in FIG. 1 and a variant as a secondary representation.

Fig. 6

1 shows a cross section corresponding to FIG. 1 through a fan housing integrated in a plate or a panel, but with an installation area for motor-driven axial fans which is modified compared to FIG. 1,

Fig. 7

6 shows a section along the line VII-VII in FIG. 6,

Fig. 8

6 seen in the direction of arrow VIII,

Fig. 9

1 shows a cross section similar to FIG. 1 through a fan housing integrated in a plate or panel with a further variant of the installation area for motor-driven axial fans with the fan interior blocked off against air passage,

Fig. 10

9 shows a representation corresponding to FIG. 9, but with the interior of the fan released for the passage of air,

Fig. 11

9 shows a view of the fan housing in the direction of the arrow XI in FIGS. 9 and 10,

Fig. 12

a section along the line XII in Fig. 10, while

Fig. 13

shows a section of FIG. 1 on a larger scale for an installation variant of the motor-driven axial fan in the fan housing.

Fig. 1 shows an embodiment of a ventilation device in which a fan housing 1 with a flat component 2, e.g. a panel or a plate, which can be used as a section of a wall, a roof, a ceiling or the like. An inner cladding part 3, which can be produced, for example, by vacuum deep drawing from flat plastic plate material, has an abutment support flange 4, via which its connection to the component 2 is established. In a preferred embodiment, this is done by an adhesive process, it being advantageous if the component 2 has on its inner surface 7a an edge region 8 which is offset like a fold around a passage opening 5 and which has approximately the height of the material thickness 9 of the inner trim part 3. The passage opening 5 in the component 2 is penetrated by a hood-like shape 6 of the inner trim part 3, so that this projects beyond the outer surface 7b of the component 2 by a considerable amount. The hood-like formation 6 preferably extends approximately over a quarter circle.

1, the passage opening 5 can also be located directly in a wall, a roof skin and / or in a roof substructure supporting this roof skin and in a ceiling.

The flat component 2, for example the plate or the panel of the ventilation device according to FIG. 1 can be - similar to FIGS. 9 and 10 of US-A-4 123 968 - also with its edges in a by post / stand / stems of the roof substructure limited roof cutout or - according to FIG. 3 of DE-C- 39 02 614 - use in profile rails that frame such a roof cutout.

A cover 10 is fastened on the outer surface 7b of the component 2, which can also be made from plate-shaped plastic material by vacuum deep-drawing. Here, too, an adhesive method is useful because the surface of the contact or support flange 11 of the cover 10 exposed to the weather does not then have to be broken through for fastening purposes.

The hood-like formation 6 of the inner trim part 3 has a shape and dimensions which ensure that a closed air space 13 is created between the inner trim part 3, the outer cover 10, the component 2 and an additional profile insert frame 12, in such a way that it is constantly present therein a standing air cushion for thermal insulation is enclosed.

In the area of an air passage 14 of the outer cover 10, the profile insert frame 12, e.g. also by gluing, a connection of the hood-like shape 6 of the inner trim part 3 with the cover 10 ago. In a preferred embodiment, the

Levels of the air passage 14 of the cover 10 and an opening 15 in the hood-like formation 6 of the inner trim part 3 are provided parallel to the surface but offset one behind the other, the opening 15 being behind the air passage 14. A pivot bearing 16 is attached to or in the profile insert frame 12, with the aid of which a closure flap 17 for the air passage 14 is formed.

The inner trim part 3 can have a molded-in groove 18 in some areas, which can be used for fastening a ventilation grille 19 without fastening means. In the embodiment shown, the ventilation grille 19 is simply inserted into the groove 18 and, on the other hand, rests on the inner surface of the hood-like formation 6 delimiting the opening 15. The ventilation grille 19 can be removed in this way without great effort and, if necessary, replaced, for example.

In the hood-like formation 6 of the inner trim part 3, a profile rail 20 can be arranged, preferably directly above the installation level of the ventilation grille 19, which profile rail forms a support for motor-driven blowers, for example axial fans 22, which are fastened thereon. It can be fixed by means of a strip-shaped fastening plate 23, which can be detachably connected to the component 2 next to the installation and passage opening 5 therein, for example by screwing. The mounting plate 23 engages on a leg 24 of the profile rail 20 and thereby sets this in the direction of the hood-like shape 6 of the inner trim part 3 under a holding voltage. The profile rail 20 has, for example, a leg 21 inclined at 45 ° to the vertical, which determines a corresponding inclination position of the axial fans 22. When the profile rail 20 with the axial fans 22 is installed in the fan housing 2, they assume a position coinciding with a diagonal of the fan interior 25. As a result, the installation space required for the axial fans 22 is reduced to a minimum and the fan housing 1 can be created with an almost optimal ratio of overall height to overall depth. The ventilation effect in cooperation with the fan housing 1 is surprisingly improved, because it has been shown that the volume flow through the axial fans 22 after installation in the fan housing 1 turns out to be larger than with a free-blowing arrangement of the same. This advantageous effect is apparently due to the fact that the axial fans 22 lie on the bisector of the air flow path delimited by the interior of the fan 25 - approximately a quarter circle.

It has proven to be advantageous if the axial fans 22 are supported with their limiting surface of their mounting frame facing away from the profile rail 20 in a molded part 26 which has a strip-like shape and is made of a resilient material. This molded part 26 can lie within the hood-like formation 6 of the inner cladding part 3 against an inwardly directed bead 27 and support it there. The axial fans 22 become simple and safe due to the prestressing pressure generated by the strip-shaped fastening plate 23 fixed between the profile rail 20 and the molded part 26. By loosening the strip-shaped fastening plate 23, the axial fans 22 are easily accessible at any time for maintenance, cleaning and replacement work.

The section shown in Fig. 2 through the fan housing 1 also shows that the inner cladding part 3 has a different cross-sectional shape from Fig. 1, in which, for example, the electrics and / or electronics for the control and regulation of the ventilation device and also the actuator for the shutter 17 can be accommodated. 2, a wall 29 can also be seen, which separates the free space 28 from the fan interior 25. The separation of the free space 28 from the fan interior 25 by the wall 29 is not complete, however, because a gap 30 remains free, which can be used for the electrical connection of the axial fans 22 to the electrics and / or electronics. It can also be clearly seen in FIG. 2 that the closure flap 17 can be connected to the fan housing 1 by a pivot bearing 16 designed as a film hinge joint 31.

2, the closed position 32 of the closure flap 17 relative to the fan housing 1 is also indicated by dash-dotted lines. The closure flap 17 lies with a folded edge 33 on the edge 34 of the cover 10 delimiting the air passage 14.
3 of the drawing shows the rear or interior view of the fan housing 1 arranged in the plate-shaped component 2. The subdivision of the inner cladding part 3 into the fan interior 25 and the free space 28 can be seen and the wall 29 separating them from one another can also be seen. However, this illustration also shows that the bead 27 shown in cross section in FIG. 1 and the groove 18 parallel to it in the hood-like formation 6 extend over the entire length of the fan interior 25. In the area of the free space 28, beads 34 can also be seen in FIG can be used to store the actuator used to operate the shutter 17. This makes it easy to plug in the required parts.

4 shows a section through the longitudinal center plane of the fan housing 1. In particular, the relative position of the inner trim part 3 to the cover 10 can be seen. The air space 13 encloses the entire outer surface of the inner trim part 3, so that optimal thermal insulation is ensured on all sides. The two-shell construction of the fan housing is also clearly shown here.

As already mentioned above, both the inner trim part 3 and the cover 10 can be produced as deep-drawn molded parts from plate-shaped plastic material, although production by injection molding would also be possible and production from sheet metal is not excluded. With the preferred deep-drawing process, however, the desired shapes can be realized in an optimal manner. This applies in particular to the beads 35 already mentioned above and to grooves 36, which are used to hold the partition 29 securely in place. A slot-like opening 37 in the bottom of the section of the inner trim part delimiting the free space 28 can be used as a handle for a handlebar which connects the actuator accommodated in the free space 28 to the closure flap 17.

Fig. 5 shows an enlarged view of the pivot bearing 16 for connecting the closure flap 17 to the profile insert frame 12. The film hinge joint 31 is particularly clearly recognizable, which consists of a fastening profile 38, a flexible bending section 39 and a holding profile 40. The fastening profile 38 is connected to the profile insert frame 12, either non-releasably by means of an adhesive seam or releasably by means of screw connections. The fastening profile 38 has a material section 42 which projects above the front surface 41 of the fan housing 1 and which has a contact edge 43 for the precise installation of the pivot bearing 16. It also has one over the Underside 44 of the fastening profile 38 projecting web 45, which forms a drip edge for moisture hitting the front surface 41 of the fan housing 1. The holding profile 40 is preferably U-shaped in cross section and engages around the closure flap 17 with the free legs 46. The holding profile 40 can be glued to the closure flap 17. 5 shows, on the inside of the legs 46 of the holding profile 40 but also sawtooth-like profiled locking elements 47 can be provided, which latch with corresponding recesses 48 on the closure flap 17.

The use of the film hinge joint 31 makes it possible to form the upper edge 49 of the closure flap 17 without a seal, because impinging moisture is either already diverted through the web 45 or, because of the film hinge joint 31 closed over the entire length of the flap 17, does not enter the Fan housing 1 can penetrate.

In the exemplary embodiment of a ventilation device shown in FIGS. 6 to 8, fan housing 1 and flat component 2 have essentially the same design as in the exemplary embodiment according to FIGS. 1 to 4. For this reason, the same reference numerals are used for the same parts .

6 to 8 that the motor-driven blowers 22 assigned to the ventilation device and preferably designed as axial fans have a changed installation position relative to the fan housing 1. This is because they rest on the top of a support plate 50, which is profiled like a bowl or trough and is primarily formed from deep-drawn plastic plate material. This is with its boundary edges 51 against both the outer cover hood 10 and the hood-like shape 6 of the frame-like, inner trim part 3 turned away side 52, namely the back or bottom of the flat component 2 supported below or outside of its passage opening 5.

6 and 7 show that the boundary edges 51 of the carrier plate 50 are designed as outward-pointing support flanges 53, which have a common upper reference plane 54 and are located flat outside or next to the passage opening 5 on the flat component 2. or underside. With the component 2, the support flanges 53 can be releasably connected by screws (not shown) or other fastening elements.

In Fig. 6 it can also be seen that the support flanges 53 of the support plate 50 come into contact with the contact or support flanges 4 of the inner trim part 3, which also rest on the side 52 of the flat component 2.

Depending on the number of motor-driven blowers, in particular axial fans 22, the carrier plate 50 is provided with air intake openings 55, each of which has a boundary edge 56 drawn in in a funnel-shaped or trumpet-shaped manner. Each axial fan 22 is supported on this boundary edge 56 with an end face 57 of its housing 58 and is fixed there, for example by screws 59. Since the plane of the boundary edge 56 can also lie below the reference plane 54 of the support plate 50 determined by the support flanges 53, it is possible that at least an axial partial length of the housing or casing ring 58 of each axial fan 22 outside the actual fan housing 1 and below the rear - or underside 52 of the flat component 2 can be provided. With its remaining axial partial length, each axial fan 22 can then project freely into the hood-like formation 6 of the inner trim part 3 from below.

The ventilation device according to FIGS. 6 to 8 of the drawing is, so to speak, a type in which the installation or arrangement of the axial fans from US-A-3 877 357 and from US-A-2 665 625 previously known features can be shared.

From Fig. 7 of the drawing it can still be seen that it can be advantageous if, in addition to the cup-shaped or trough-shaped profiled support panel 50, a cup-shaped or trough-shaped grid screen 60 is also attached to the underside of the flat component 2. This lattice screen 60 can be deep-drawn from a perforated plate, or else can be formed from fly gauze, its edge edges 61 engaging in a frame-like groove 62 which is incorporated into the rear or underside 52 of the plate-shaped component 2 at a distance from the edge of the passage opening 5 . The grid screen 60 can also be detachably fixed to the rear or underside 52 of the plate-shaped component 2 by means of screws or other suitable fastening elements.

From the basic structure, the further design of a ventilation device according to FIGS. 9 to 12 is quite comparable with the ventilation device according to FIGS. 1 to 4. This is because it has a fan housing 1 with an outer cover 10 made of molded, for example deep-drawn plate material, primarily plastic, which is provided on at least three sides with a bearing or support flange 11 parallel to the installation plane. Along the fourth side, to limit an air passage 14, it also has a boundary edge 34 spaced apart from the installation plane. The cover 10 is firmly connected to the flat, plate-shaped component 2, namely a plate, a panel or the like, via the contact or support flange 11.

The inner trim part 3 is provided with a hood-like formation 6, which is arranged in front of the passage opening 5 of the plate-shaped component 2 and whose boundary walls are at least close to the inner surfaces of the outer cover 10, e.g. each have a relatively small distance from it.

It is essential in the ventilation device according to FIGS. 9 to 12 that a rotary body 70 which can be displaced in angle between two rotational end positions (cf. FIGS. 8 and 9) is accommodated in the inner trim part 3, in which at least one motor-driven fan, e.g. B. an axial fan 22, sits. The rotating body 70 has two walls 71 and 72 which extend approximately in the same direction, between which the axial fan 22 is held with an air conveying direction parallel to the wall. To hold the axial fans 22, a flat channel 73 is used, which is formed in each of the walls 71 and 72 at about half the length and whose width corresponds to the axial height of the housing 74 of the axial fans 22. The walls 71 and 72 of the rotating body 70, starting from the flat channel 73, are each formed in a divergent manner towards their longitudinal edges 75, so that the housings 74 of the axial fans 22 extend between them to produce a snap-in connection into the area push the flat channel 73.

The two walls 71 and 72 of the rotating body 70 are connected to one another by angled end flanges 76 and 77, one each of these end flanges 76 and 77, for example the end flange 76, carrying a bearing journal 78 on the outside. By means of two bearing journals 78, the rotating body 70 engages in a bearing opening 79, which are located in the end walls 80 of the hood-like formation 6 of the inner trim part 3 (see FIG. 12).

With their longitudinal edges 75, the walls 71 and 72 of the rotary body 70 can be placed in each of the two rotary end positions according to FIGS. 9 and 10 against stops 81 inside the hood-like formation 6 of the inner trim part 3, as shown in FIGS. 9 and 10 clearly show. 9, the walls 71 and 72 of the rotating body 70 block off the interior of the fan 25 in the hood-like formation 6 against air passage, while in the other end of rotation position according to FIG. 10, this interior 25 from the Open the passage opening 5 towards the air passage 14.

In particular FIGS. 9 and 10 of the drawing can still be seen that the inner trim part 3 with a contact flange 82 within the outer cover 10 next to the edge of the passage opening 5 against the Outside of the flat component 2 is supported. It can be fixed there by gluing, screwing or clamping.

9 and 10 of the drawing also show that the opening edge 15 of the hood-like formation 6 of the inner trim part 3 is located at a distance in front of the boundary edge 34 for the air passage 14 of the outer cover 10 and that between this boundary edge 34 and the opening edge 15th the hood-like shape 6 of the inner trim part 3, a weather protection body 83 can be used. This weather protection body 83 can be designed as a flat plate, in which there are air passage openings 83, which are outside of e.g. oblique screen surfaces 85 are overlapped. In addition to the weather protection body 83, insect or bird protection grids can also be fixed at the same point, if necessary.

The passage opening 5 in the flat component 2 can also be assigned a shielding molded part 86 on the inside, which extends over the entire length of the passage opening 5. One longitudinal half of which can be formed by a closed cup 87 and the other longitudinal half of which can also be formed by a perforated or mesh grid 88 which is also cup-shaped.

In the ventilation device according to FIGS. 9 to 12, instead of the closure flap 17 assigned to the air passage 14 of the ventilation devices according to FIGS. 1 to 4 and 6 to 8, the rotating body 70 is used as the closure member, which extends and extends in the longitudinal direction of the fan housing 1 has bearing axis passing through the journal 78.

This rotary body 70 delimits in the rotary end position according to FIG. 10 between its walls 71 and 72 an air duct 89, in which at least one axial fan 22 with its housing or casing ring 74 sits as a motor-driven fan, the plane of rotation of which is approximately transverse to the direction of passage of the Air duct extends.

Of course, it is possible to use design features of the fan housing 1 of the type according to FIGS. 1 to 4 also for the fan housing 1 of the types according to FIGS. 6 to 8 or 9 to 12 and vice versa.

For example, it is conceivable to equip the inner cladding part 3 of the fan housing 1 according to FIGS. 1 to 4 and 6 to 8 in the manner corresponding to FIGS. 9 and 10 with a contact flange 82 which is inside the outer cover 10 next to the edge of the Passage opening 5 is supported against the outside of the flat component 2 and is fixed there by gluing, screwing and / or clamping.

In connection with the type of installation shown in FIG. 1 of the drawing for the motor-driven blowers, primarily axial fans 22, it is of particular importance that the hood-like shape 6 of the inner trim part 3 is sufficient in spite of its low construction weight to take over the supporting function for these blowers . Fastening of the motor-driven blowers, primarily axial fans 22, to the plate-shaped component 2 is therefore deliberately avoided in this case. There is therefore the advantageous possibility of using the motor-driven blowers in the hood-like shape 6 of the inner, frame-like cladding part 3 before the fan housing 1, but at least its inner, frame-like cladding part 3 of a passage opening 5 in a wall, a roof, one Ceiling, in particular in a plate or panel 2, is assigned. In particular, when assigning the fan housing 1 to a plate or panel 2, the possibility is also open to support the inner trim part 3 either with its contact flange 82 inside the outer cover 10 next to the edge of the passage opening 5 against the outside of the plate or the panel , or, to let it protrude with its hood-like shape 6, the passage opening 5 of the plate or panel 2 from the inside to the outside, so that its abutment or support flange 4 rests on the inside 7a of the plate or panel 2.

In any case, the motor-driven blowers, which are housed exclusively in the hood-like shape 6 of the inner trim part 3 and are carried solely by the blower, are accessible from the interior of the room through the passage opening 5, in particular for maintenance and repair purposes.

FIG. 13 also shows details of a type of ventilation device modified compared to FIG. 1. In this case, the cover 10 and the inner trim part 3 are each attached to the outside 7b of the flat component 2 only via relatively short contact or support flanges 11 and 4.

It is of particular importance here, however, that the one used to fix the motor-driven blowers, e.g. Axial fans 22, in their functional position by the elastic molded part 26 (FIG. 1), do not apply preload pressure to the flat component 2, e.g. the plate, the panel or the like can react. Rather, this prestressing pressure is completely absorbed in the hood-like formation 6 of the inner, frame-like covering part 3. For this purpose, the profile rail 20 which forms the carrier for the motor-driven blowers, namely axial fans 22, can be detachably anchored to special brackets 90, for example by means of screws 90, which extend below the opening 15 from the inside of the wall, the inner trim part 3 into the fan interior 25 protrude into it.

The holding forces required for the motor-driven blowers are here completely absorbed (similar to US Pat. No. 1,983,979) by the hood-like shape 6 of the inner trim part 3, which projects beyond the actual construction level of the roof or the like. Running vibrations of the motor-driven blowers, for example axial fans 22, can thereby be kept as far as possible from the flat component 2 and can therefore not be transmitted into the wall, the roof, the ceiling or the like.

If necessary, the brackets 90 can be designed in the manner of a vibrating metal, at least in the effective area of the screws 91, e.g. equip with elastomer sleeves to further improve the vibration-damping effect.

It is also conceivable, however, to provide both the brackets 90 and the profile rail 20 with hook legs which, together with the restoring effect of the elastic molded part 26, produce an automatic clamping effect and thereby the positioning of the blowers 22 in the hood-like shape 6 of the frame-like trim part 3 without Allow by means of screws 91 or the like.

Either an angle rail can be used as the console 90, which extends continuously over the entire installation length of the motor-driven blowers, in particular axial fans 22, or else short angle pieces can be used which extend over the installation length for the motor-driven blowers, in particular axial fans 22 sit distributed on the inside of the inner, frame-side trim part 3.

Reference list

1

Fan housing

2nd

plate-shaped component

3rd

inner panel

4th

Support or support flange (of the inner cladding part)

5

Outlet opening

6

hood-like shape

7a

Inside of the plate-shaped component

7b

Outside of the plate-shaped component

8th

offset edge area

9

Component thickness

10th

Cover

11

Contact or support flange

12th

Profile insert frame

13

airspace

14

Air passage

15

Opening in the inner panel (air passage)

16

Swivel bearing

17th

Flap

18th

Groove

19th

Ventilation grille

20th

profile

21

leg

22

Fan

23

Mounting plate

24th

vertical thigh

25th

Fan interior

26

Molding

27

bead

28

free space

29

wall

30th

breakthrough

31

Film hinge joint

32

Closed position

33

Lower edge

34

Contact edge

35

Beads

36

Groove

37

Recess

38

Mounting profile

39

section

40

Holding profile

41

Front surface

42

Material section

43

Contact edge

44

Lower edge

45

web

46

leg

47

Locking elements

48

Recesses

49

edge

50

Carrier board

51

Boundary borders

52

Side (back or bottom)

53

Support flanges

54

Reference plane

55

Air intake opening

56

funnel-shaped or trumpet-shaped boundary

57

Support surface

58

Fan housing or jacket ring

59

Screws

60

Lattice screen

61

Marginal edges

62

Groove

70

Rotating body

71

wall

72

wall

73

Gutter

74

Fan housing or jacket ring

75

Long edges

76

End flanges

77

End flanges

78

Cones

79

Warehouse opening

80

End wall

81

attacks

82

Contact flange

83

Weather protection body

84

Air vents

85

Bevels

86

Shield molding

87

Bowl

88

Perforated or mesh grids

89

Air duct

Claims (12)

Fan housing (1) for arrangement in a passage opening (5) of a wall, a roof, a ceiling, in particular a plate, a panel (2) or the like,
with an outer cover (10) made of molded, for example deep-drawn sheet material, primarily plastic, which is provided on at least three sides with a bearing or support flange (11) parallel to the installation plane, but along the fourth side to delimit an air passage (14) one of has the boundary edge (34) spaced apart from the installation plane, the covering hood (10) being in each case connected to the wall, the roof, the ceiling, the plate, the panel (2) or the like via the support flange (11) ,
an inner, frame-like covering part (3) which is provided with a hood-like formation (6) which is provided in front of the passage opening (5) of the wall, the roof, the ceiling, the plate, the panel (2) or the like,
as well as
that the boundary walls of this hood-like formation (6) assume and / or maintain a minimum distance from the inner surfaces of the outer cover hood (10) everywhere,
and that the opening edge (15) of the hood-like formation (6) of the inner trim part (3) is located at a distance from the boundary edge for the air passage (14) of the cover (10). Fan housing according to claim 1,
in which the inner, frame-like covering part (3) made of molded, for example deep-drawn plate material, mainly plastic, has frame legs with a support flange (4) parallel to the installation plane and a cover flange projecting transversely therefrom into the passage opening,
and wherein the frame-like covering part (3) as well as the cover 10) is connected to the wall, the roof, the ceiling, the plate, the panel (2) or the like via the contact or support flange (4) ,
characterized,
that the covering part (3) with its hood-like shape (6) projects through the passage opening (5) of the wall, the roof, the ceiling, the plate, the panel (2) or the like from the inside to the outside. Fan housing (1) for arrangement in a passage opening (5) of a wall, a roof, a ceiling, in particular a plate, a panel (2) or the like,
in particular according to one of claims 1 and 2,
with an inner, frame-like covering part (3) made of molded, for example deep-drawn sheet material, mainly plastic, the frame legs of which have a support flange (4) parallel to the installation plane and a cover flange projecting transversely therefrom into the passage opening,
and with an outer cover (10) made of molded, for example also deep-drawn sheet material, primarily plastic, which is provided on at least three sides with a bearing or support flange (11) parallel to the installation plane, but along the fourth side to limit an air passage (14) has a boundary edge (34) spaced from the installation plane,
whereby both the frame-like covering part (3) and the cover 10) each via the contact or support flange (4 or 12) with the wall, the roof, the ceiling, the plate, the panel (2) or the like in Connected
characterized,
that the inner, frame-like covering part (3) is provided with a hood-like shape (6) which projects through the opening (5) of the wall, the roof, the ceiling, the plate, the panel (2) or the like,
that the boundary walls of this hood-like formation (6) occupy and / or maintain a minimum distance from the inner surfaces of the outer cover (10) everywhere. Fan housing according to one of claims 1 to 3,
characterized,
that the opening edge of the hood-like formation (6) of the inner trim part (3) runs parallel to the boundary edge of the air passage (14) of the outer cover (10) in a plane lying opposite this and is arranged with the boundary edge of the air passage (14) of the outer cover (10) is connected or connectable by a profile insert frame (12), the profile insert frame (12) forming the support for a pivot bearing (16) of a closure flap (17) and, on the one hand, the profile insert frame (12) and on the other hand, the boundary edge of the passage opening (5) in the wall, the roof, the ceiling, or in the plate, the panel (2) or the like. The air space maintained between the inner trim part (3) and the outer cover (10) can complete. Fan housing according to one of claims 1 to 4,
characterized,
that the passage opening (5) in the wall, the roof, the ceiling, in particular in the panel, the panel (2) or the like, has a fold-like offset edge area (8) on the inside, in which the contact or support flange ( 4) of the inner trim part (4) is received at least flush, while the abutment or support flange (11) of the cover (10) the outside (7) of this wall, this roof, this ceiling, in particular this plate, this panel (2 ) or the like, covering the entire surface, preferably the plate, the panel (2) or the like. consists of a plastic hard foam material with which the abutment or support flanges (4, 11) of the covering part (3) and cover (10) are inseparably connected, in particular firmly glued or welded, the closure flap (17) being expediently connected to the fan housing (1) by a film hinge joint (31) acting over its entire length, the film hinge joint (31) comprising a fastening profile (38) and a holding profile (40), which are connected by an elastic material section (42), which is produced in the same manufacturing step, and wherein the holding profile (40) of the film hinge joint (31) on a corresponding edge profile (41) The closure flap (17) is pushed on. Fan housing according to one of claims 1 to 5,
characterized,
that the fan (22) in the hood-like formation (6) of the inner trim part (3) is inclined to the plane of the air passage (14), preferably at an angle of approximately 45 ° to the air passage opening (14), and that the closure flap (17 ) is arranged pivotably on the cover (10) almost 90 ° from its closed position (32). Fan housing according to one or more of claims 1 to 5,
characterized,
that one or more motor-driven blowers, for example axial fans (22), rest on a, for example, cup-shaped or trough-shaped profiled support plate (50) which, with its boundary edges (51), opposes both the outer covering hood (10) and the hood-like shape (6) of the inner, frame-like covering part (3) facing away from (rear or bottom) side (52) of the flat component (2) is supported below or outside of its passage opening (5). Fan housing according to claim 7,
characterized,
that the boundary edges (51) of the support plate (50) form support flanges (53), the upper reference plane (54) of which lies outside or next to the passage opening (5) on the planar component (2) on the rear or underside and with this component (2 ) - for example by screws or other fastening elements - can be brought into detachable connection. Fan housing according to one of claims 7 and 8,
characterized,
that a cup-shaped or trough-shaped grid screen (60) is additionally attached to the underside (52) of the planar component (2). Fan housing (1) for arrangement in a passage opening (5) of a wall, a roof, a ceiling, in particular a plate, a panel (2) or the like, with an outer cover (10) made of molded, for example deep-drawn plate material Plastic, which is provided on at least three sides with a support flange (11) parallel to the installation plane, but along the fourth side to delimit an air passage (14) has a boundary edge (34) spaced from the installation plane, the cover (10) is in each case connected to the wall, the roof, the ceiling, the plate, the panel (2) or the like via the support flange (11), characterized in that
that an inner covering part (3) with one of the passage opening (5) of the wall, the roof, the ceiling, the plate, the panel (2) or the like. Upstream of the hood-like shape (6) is provided that the boundary walls this hood-like shape (6) is at least close to the inner surfaces of the outer cover (10),
and that a rotary body (70) which can be displaced between two rotational end positions is accommodated in the inner trim part (3), in which at least one motor-driven blower, for example an axial fan (22), is seated. Fan housing according to claim 10,
characterized,
that longitudinal edges (75) of the walls (71, 72) of the rotating body (70) can be placed in both rotary end positions against stops (81) inside the hood-like shape (6) of the trim part (3). Fan housing according to one of claims 10 and 11,
characterized,
that the inner trim part (3) with a contact flange (82) inside the outer cover (10) next to the edge of the passage opening (5) against the outside of the wall, roof, ceiling, plate, panel (2) or. is supported,
that the opening edge (15) of the hood-like formation (6) of the inner trim part (3) is located at a distance from the boundary edge (34) for the air passage (14) of the cover (10) that between the boundary edge (34) for the Air passage (14) of the covering hood (10) and the opening edge (15) of the hood-like shape (6) of the inner trim part (3), preferably a weather protection body (83) and possibly also an insect or bird protection grille can be used, and
that possibly the passage opening (5) of the wall, the roof, the ceiling, the plate, the panel (2) or the like. Associated with a shielding molded part (86) on the inside, which at least partially consists of a hole or Mesh (88) exists.

Images