DE2816669A1 - Room ventilation system combining flaps and radial fans - employs wall mounted unit with flaps above and below two fans - Google Patents

Abstract

The room ventilating system uses two radial fans (30, 32) installed on a panel (24) which can be mounted in a wall opening, combined with a flap arrangement (38, 40) to guide the flow through the unit. The upper flap (40) can be arranged to swing one way, which may be outwards, and the lower flap (38) to swing inwards. Air can then be blown by a fan through an opening with the flaps fully open, or two flows can be guided by the flap when partially open. One flow is from the fan and the other flow can be recirculated by the flap. The flaps can be controlled by hand, by a stepping motor or operated by a device forming part of a temp. on humidity control system or smoke or gas detector system.

Description

Ventilation device for supply air, exhaust air and circulating air operation

The invention relates to a ventilation device for supply air, exhaust air and circulating air operation with a wall to be ventilated Space usable housing, which is divided by a partition into a supply air chamber and an exhaust air chamber, with a radial supply air fan arranged in the supply air chamber, sucks in the supply air axially from the outside of the room and blows it out radially into the supply air chamber, with a coaxial to the supply air fan Exhaust air radial fan arranged in the exhaust air chamber, which draws in exhaust air axially from the inside of the room and blows out radially into the exhaust air chamber, and with outlet openings for the intake air and exhaust air chamber.

There are different ways of extracting exhaust air from a room and at the same time supplying fresh air to the room known from ventilation devices. In the simplest embodiment two axial fans are installed side by side in the wall of the room, one of which extracts the exhaust air and the other supplies the supply air (e.g. DE-PS 495 13o). This device takes up a large wall area. Are

Postal checking account: Karlsruhe 76979-754 Bank account: Deutsche Bank AG Villingen (BLZ 69470039) 146332

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If the two fans are arranged close to one another, the supply air and exhaust air flow mix in an undesirable manner. After all, the device cannot work in recirculation mode, i.e. only circulate the room air without fresh air to feed.

From DE-OS 2 151 6o9 a ventilation device is known in which a double radial fan draws in supply air in one axial direction and exhaust air in the other axial direction and blows this out radially into the room as mixed air. This device can only work in mixed air mode.

From DE-OS 2 311 644 a ventilation device is known in which on the same drive shaft an axial fan for the exhaust air and a radial fan for the supply air are arranged.

DE-OS 2 447 809 also shows an axial fan, the fan blades of which are rotated in such a way that they have two Form radial areas with opposite conveying direction for the supply air and the exhaust air. These devices enable no circulating air operation and a mixing of the supply air and exhaust air flows cannot be prevented.

From DE-PS 817 648 a ventilation device with a housing is known that is divided into two chambers by a partition

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is. A fan wheel sits in each of these chambers on a common drive shaft. The fan wheel of a chamber sucks Exhaust air and conveys it to the outside through a nozzle. The fan wheel of the second chamber sucks in air through a separate one Channel this nozzle and promotes it into the interior of the room. A hinged flap in the dividing wall of the Nozzle allows the intake air sucked in by the first fan wheel to be supplied to the second fan wheel, so that the device in the Recirculation mode works. If this flap is in an intermediate position, mixed air operation is also possible.

This device known from DE-PS 817 648 must be installed with its entire housing inside the room and is available in connection with the outside of the room only through the nozzle. The device is therefore very space-consuming and affects the Interior design of the room. In terms of flow, it is The device is very unfavorable due to the very long and angular flow path, especially in recirculation mode. To. A sufficient To convey the amount of air, a high fan power is required, which in turn leads to a high flow rate which leads to air and loud noise in the device.

From DE-AS 1 o61 99o a ventilation device is known which has an axial fan in a housing with a partition, the plane of which contains the fan axis. This will make that Housing divided into a supply air chamber and an exhaust air chamber, each with an intake and an exhaust opening exhibit. If the axis of the fan lies in the plane of the wall, then

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is exhaust air from the room to the outside through the exhaust air chamber and fresh air is conveyed into the interior of the room through the supply air chamber. The housing can be placed in the wall of the room be pivoted that the fan axis is also perpendicular to Room wall stands. In these positions either through both chambers exhaust air to the outside or through both chambers Supply air promoted to the inside.

This device known from DE-AS 1 o61 99o has the disadvantage that the plane of the fan wheel is perpendicular to the wall of the room stands, so that the housing in an unsightly way into the interior of the room protrudes. In addition, this device cannot work in recirculation mode.

Finally, a ventilation device is used by the applicant initially mentioned genus in the trade. This Device has an extremely compact structure, has large Flow cross-sections and thus a good delivery rate for both supply air and exhaust air and low noise levels.

The disadvantage of this known device is that that it cannot work in circulating air and mixed air mode.

The invention is based on the object of a ventilation device to improve the aforementioned genus so that it switchable in supply air and exhaust air operation, in mixed air operation or can work in recirculation mode.

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This object is achieved in that the Outlet openings of the supply air chamber and the exhaust air chamber can be pivoted with the outside of the room and the inside of the room in connection.

Advantageous embodiments and developments of Invention are specified in the subclaims.

In the ventilation device according to the invention, the housing is in divided into two chambers, each of which has a radial fan. One of these radial fans draws in fresh air directly while the other fan extracts exhaust air directly from the interior of the room. The intake air and the intake Exhaust air can now either directly to the outside of the room via the outlet openings of the corresponding chambers or the inside of the room. It is also possible to partially vent the supply air and the exhaust air to the outside and partly to lead inwards. It is therefore a pure supply air / exhaust air operation, a mixed air operation and a pure one Circulating air operation possible, the flow paths in the device being very short and the flow cross-sections in all cases are very big. The device therefore works quietly and with a high delivery rate in every operating mode.

The pivotable connection of the outlet openings of the supply air chamber and the exhaust air chamber with the outside or the inside of the room is in one embodiment the invention possible in that the housing has one opening opening inwards and one opening outwards

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and on the partition wall pivotable flaps are provided which sweep over these openings so that they depending on Damper position completely on the supply air chamber side, completely on the extract air chamber side or partially open lie on both sides of the partition.

In another embodiment, the housing has in each case one on the inside of the room and one on the outside of the room opening out and the outlet openings the supply air chamber and the exhaust air chamber can be opened by means of pivoting flaps or slides with a variable opening cross-section be connected to these outlet channels.

In a third embodiment, the continuous partition wall separates the supply air chamber completely from the exhaust air chamber. The housing can be pivoted as a whole in the wall of the room so that that in one end position the outlet opening of the air inlet chamber on the inside of the room and the outlet opening of the exhaust air chamber on the outside of the room and in the other end position the outlet opening of the supply air chamber on the outside of the room and the outlet opening of the exhaust air chamber is on the inside of the room.

In principle, the two radial fans can sit on the same shaft and are driven by a common electric motor will. However, it is preferred to have each fan independently powered by its own motor. this means a little more effort, but offers significant advantages. The supply air and discharge flow rates can be independent

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can be adjusted from each other. An increased supply of air allows e.g. to maintain a slight overpressure in the ventilated space. This is used e.g. to to keep the room free from ingress of dust. An increase in the amount of exhaust air leads to a slight negative pressure in the room. This is used, for example, when there is a leakage of harmful fumes, radioactive dust or something similar from the room should be prevented.

The delivery rate of the supply air and exhaust air fan can also be used be adapted to the respective flow resistance. This is useful, for example, when the suction openings this fan or the outlet openings with different filters, heating devices or the like. Equipped are.

Finally, with pure air circulation, it is also possible to switch off the supply air fan completely, which in this case the fresh air drawn in would only be blown out again anyway.

Finally, with separate drive motors, identical fan wheels can be used for both fans, since they are in opposite direction of rotation can be driven. This reduces the number of required for the device various components.

The pivoting of the flaps, slides or the entire housing

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Depending on the embodiment, it can be designed differently. In the simplest case, there is just a switch between the two End positions of the pure supply air / exhaust air operation and the pure Recirculation mode required. It can also be gradual Switching over one or more intermediate positions with mixed air operation take place. Finally, continuous switching between the two end positions is also possible.

Pivoting can be done manually using a hand lever. Adjusting magnets can be used for a step-by-step pivoting. Continuous pivoting is preferably carried out by a servomotor. Pivoting through Solenoids or a servomotor are particularly suitable for automatic control by clocks or measuring sensors for the temperature, humidity, smoke or gas content of the air or the like .. <,

It is of course also possible to use the pivot position to adjust once when installing the fan and then for determine the total operating time.

The pivoting of the flaps or slides takes place for the Outlet openings of the supply air chamber and the exhaust air chamber expediently symmetrical, so that the entire outlet cross-section for the air flows of the supply air fan and of the exhaust fan remains constant in every mode of operation and only the relationship in which these Currents are distributed to the respective outlet openings. -:;. "'....

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The housing of the device is preferably designed as a straight prism rounded at the longitudinal edges, which is used for the The partition containing the longitudinal axis is symmetrical. This allows rectangular flaps or a rectangular one in a simple manner Wall cutout can be used for the pivoting housing.

This housing shape also results in manufacturing technology essential advantages. The end faces of the housing perpendicular to the wall of the room, which form the base of the prism, can be formed from four identical parts, which are arranged in pairs on both sides of the partition. These parts can be injection molded parts or deep-drawn sheet metal parts.

Profile parts, which form the outer surface of the prism-shaped housing, can be inserted between these end faces. in the Area of the fan suction openings and in the area of the Outlet openings, these profile parts are designed as louvre blades, while they are closed in the rest of the area Form wall.

These profile parts can be extruded from plastic or aluminum. In addition to the inexpensive production, this has the advantage of the same extrusion profiles to manufacture differently wider enclosures can be used as needed when there may be two or more fans to be accommodated next to each other in a housing or if the housing is widened for interior design reasons shall be.

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The prismatic shape of the housing finally offers also the advantage that several housings can be joined together with practically no joints.

In the following, the invention is explained in more detail on the basis of exemplary embodiments with reference to the accompanying drawings explained. Show it:

Fig. 1 - a perspective external view of a ventilation device. the invention,

2 - a corresponding perspective external view of two ventilation devices attached to one another,

3 - a perspective view of a ventilation device according to the invention with the housing removed,

Fig. 4a,

4b, 4c - a schematic axial section through a ventilation device according to Fig. 3 in supply air / exhaust air mode, in mixed air mode and in circulating air mode,

Fig.5a,

5b, 5c - a schematic axial section through another embodiment of the ventilation device in supply air / exhaust air operation, in mixed air mode and in recirculation mode and

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Fig. 6a, b - a schematic axial section through a third embodiment of the ventilation device in supply air / extract air mode and in air supply mode.

Fig. 1 shows the housing designated as a whole by 1o Ventilation device. The housing 1o has essentially the shape a straight prism, the longitudinal edges and lateral surfaces of which can be at least partially rounded.

In the vertical center plane, the housing is 1o by a Partition wall 12 divided into two halves symmetrical to this partition wall. The base of the prism, which is the end face of the housing 1o each consist of two side walls arranged perpendicularly and symmetrically to the partition wall 12 All four side walls 14 have the same shape and are made of plastic in the injection molding process or of sheet metal in the deep drawing process manufactured.

The outer surfaces of the housing 1o are formed by profiles, which are inserted between the side walls 14 and are extruded from plastic or aluminum. The ones in the to the partition Profiles 16 used in parallel outer surfaces are designed as louvre blades, between which slots remain free, to bring the air to that shown in FIG. 1 indicated by dotted lines Arrive intake opening 18 of a blower to be described later allow. Also the upper bevel visible in FIG. 1

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The outer surface is formed by profiles in the form of blind slats 2o. These slats 2o leave spaces for the air outlet from an outlet opening to be described later free. The lower inclined lateral surface visible in FIG is completely closed by a profile in the form of a plate 22.

The lateral surfaces of the housing 1o which are not visible in the perspective illustration of FIG. 1 are corresponding formed, with only the upper inclined lateral surface is closed by a plate 22, while the has lower inclined lateral surface blind slats 2o.

The axial length of the housing 1o can by corresponding Cutting the profiles 16, 2o and 22 to length can be adapted in a simple manner to the respective requirements. In the representation 1, this length is chosen so that .the lateral surface parallel to the partition wall 12 with the blind slats 16 in the substantially square and thus adapted to the fan 18. A greater axial length and thus a rectangular outer surface can be chosen from an aesthetic point of view. It is also possible to use the axial Double or triple the length to place two or three fans side by side.

The shape of the housing 1o allows several of these Housing 1o axially next to each other, with adjoining To arrange side walls 14, as FIG. 2 shows. This results in

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an aesthetically pleasing, practically seamless joining several ventilation devices.

The housing 1o of the ventilation unit is in the wall of the to built-in ventilating room. This wall can be the masonry, a glass block wall or a window pane.

In the first embodiment shown in FIGS. 3 and 4a-c the installation takes place in such a way that the partition wall 12 is in the plane of the schematically indicated room wall 24 lies.

The internal structure and the mode of operation of the first embodiment of the ventilation device can be seen from FIGS. 3 and 4a-c emerged.

The partition wall 12 divides the housing Io into two chambers, a supply air chamber 26 facing the outside of the room and an exhaust air chamber 28 facing the inside of the room.

In the supply air chamber 26 there is a supply air radial fan 3o, which sucks in outside air through a suction opening 18 and blows it out radially into the supply air chamber 26. Coaxial to it an exhaust air radial fan 32 is provided in the exhaust air chamber 28, which exhaust air axially through an intake opening 18 sucks in from the room and blows it out radially into the exhaust air chamber 28.

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The two fans 3o and 32 can sit on the same shaft and are driven by a common electric motor will. However, an independent drive of the two fans 3o and 32 by two separate ones, not shown, is preferred Electric motors.

The supply air chamber 26 is closed at the inclined upper lateral surface by the plate 22, while it is at the inclined lower lateral surface has an outlet opening 34 which is essentially rectangular and is covered by the blind slats 2o. The exhaust air chamber 28 is on the inclined lower lateral surface closed and has an outlet opening 36 on the inclined upper lateral surface, which through the in the illustration the figures 1 and 2 visible blind slats 2o is covered.

As can be seen most clearly from the perspective illustration in FIG. 3, the partition wall 12 points above and below the fan 3o and 32 openings through flaps hinged to the partition wall 12 so as to be pivotable are lockable. The lower flap 38 can be pivoted into the supply air chamber 26, with it sweeps the free edge over the outlet opening 34, as can be seen from the representations of FIGS. 4 a - 4 c. The upper flap is in the corresponding Wöise 4o pivotable into the supply air chamber 28 and sweeps over the outlet opening 36 of this chamber.

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The pivoting of the flaps 38 and 4o is preferably carried out simultaneously by a lever linkage 42, which in the illustration 3 can be actuated manually by means of a handle 44. Instead of manual operation using the handle 44, actuation by means of an actuating magnet or a servomotor can also be provided. The pivoting of the flaps and 4o can be gradual or continuous, depending on the embodiment take place-

If the flaps 38 and 4o, as shown in FIG. 3, are complete open, they assume the position shown in Fig. 4a. The lower flap 38 closes the supply air chamber 26 against the outlet opening 34, while the upper flap 4o the supply air chamber 26 with the outlet opening 36 of the exhaust chamber 28 connects. Conversely, the upper flap 4o closes the exhaust air chamber 28 against its outlet opening 36 and the lower flap 38 connects the exhaust air chamber 28 with the outlet opening 34 of the supply air chamber 26 opening towards the outside of the room.

As the arrows shown, this promotes this Supply air fan 3o all of the supply air sucked in from the outside of the room via the outlet opening 36 into the interior of the room. The exhaust fan 32 conveys all of the exhaust air sucked in from the interior of the room to the outside via the outlet opening 34. The ventilation unit works in pure supply air - exhaust air mode.

If the flaps 38 and 4o in the one shown in Fig. 4b

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Swiveled to the intermediate position / so is the supply air chamber 26 both with part of its outlet opening 34 and with part of the outlet opening 36 of the exhaust air chamber in connection. The exhaust air chamber 28 is also connected to part of its outlet opening 36 and a part of the outlet opening 34 of the supply air chamber.

As the arrows drawn in FIG. 4b show, promotes thus the supply air fan 3o a part of the fresh air drawn in via the outlet opening 36 into the interior of the room and a Part of the outer step opening 34 back to the outside. Corresponding the exhaust fan 32 conveys part of the exhaust air sucked in from the interior of the room via the outlet opening 34 to the outside and the other part via the outlet opening 36 back into the room as circulating air. Via the outlet opening 36 a mixture of supply air and exhaust air is supplied to the interior of the room, so that the device works in mixed air mode.

If the flaps 38 and 40 are completely closed, like Fig. 4c shows that the supply air fan 3o promotes the entire sucked fresh air back to the outside while the exhaust fan 32 returns all of the exhaust air that has been drawn in conveyed back into the interior of the room. The ventilation unit is working thus in the pure air circulation mode, by only the air in the room overturned.

The separate drive for supply air fan 3o and exhaust air fan 32 has the advantage that the speed of this fan and thus

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whose delivery rate can be controlled independently. In the supply air / exhaust air operation according to FIG a slight overpressure in the supply air and, due to the amplification of the exhaust air, a slight underpressure in the ventilated Space can be generated. Next kJ..Ln a different one Flow resistance are compensated for, for example, by a filter in front of the suction opening 18 of the Supply air blower 3o or in front of the outlet opening 36 ins Interior space can be created. Likewise, a heating device can be installed in front of the outlet opening 36 for heating the air.

Regardless of the mode of operation of the ventilation unit, the air inside the room is always directed upwards Outlet opening 36 supplied. The incoming air flow is directed towards the ceiling, as is desirable for optimal draft-free ventilation.

The joint pivoting of the flaps 38 and 4o has the advantage that when covering an outlet opening through the associated flap each releases a complementary surface of the other outlet opening through its flap will. The exit flow area for the two fans 3o and 32 therefore remain independent of the position of the. Flaps or the mode of operation constant, so that a optimal and low-noise air flow is guaranteed.

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In the operating position of FIG. 4c, with a separate drive of the fan, the supply air fan 3o can be switched off completely will. Even if the ventilation device is completely out of order, it is brought into the position of FIG. 4c. In this position is completely airtight against the inside of the room by the partition 12 with the closed flaps 38 and 4o the outside of the room closed.

Another embodiment is shown in FIGS. 5a to 5c, which is only explained in the following to the extent that it differs from the embodiment of FIGS. 3 and 4a to 4c. The same reference numerals are used for matching components.

The housing 1o is in the embodiment of Figures 5a to 5c installed in the room wall 24 in such a way that the partition wall 12 is inclined towards the room wall 24. The intake opening 18 of the supply air fan 3o is, however, also to the outside of the room and the suction opening 18 of the exhaust fan 32 to directed to the inside of the room.

In contrast to the previous embodiment, however, the supply air chamber 26 and the exhaust air chamber 28 each open above via the outlet opening 46 or 48 indicated by dashed lines into an outlet channel 5o directed into the interior of the room and at the bottom via outlet openings 46 'and 48', which are likewise dashed, into an outwardly directed outlet channel 52.

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On the partition 12, a pivotable flap 54 is provided at the top and a pivotable flap 56 is provided at the bottom, which are preferably also pivoted together and opposite to one another.

^{In the} one end position of the pivoting of the flaps 54 and 56 shown in FIG. 5a, the flap 54 completely closes the outlet opening 48 of the exhaust air chamber 28 with respect to the outlet channel 5o and completely opens the outlet opening 46 of the inlet air chamber 26

ο
against the outlet channel 5o free. Conversely, the lower flap 56 completely closes the outlet opening 46 ′ of the inlet air chamber 26 against the outlet channel 52 and completely releases the outlet opening 48 ′ of the exhaust air chamber 28 against this outlet channel 52.

All of the fresh air sucked in by the supply air fan 3o is thus drawn into the interior of the room via the outlet channel 5o promoted, while the entire exhaust air sucked in by the exhaust fan 32 via the outlet channel 52 to the outside is promoted. The device therefore works in pure supply air / exhaust air mode.

If the flaps 54 and 56 are pivoted into an intermediate position shown for example in FIG. 5b, the upper flap 54 the outlet openings 46 and 48 and the lower flap 56 the outlet openings 46 'and 48', respectively with reduced flow cross-section free.

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The supply air fan 3o thus conveys the fresh air drawn in partially through the outlet channel 5o inward and partially through the outlet channel 52 to the outside. as well
The exhaust fan 32 conveys the extracted room air partly as circulating air back into the interior of the room via the outlet channel 5o and partly to the outside through the outlet channel 52. The device therefore works in mixed air mode

In the position shown in FIG. 5c, the upper flap 54 completely closes the supply air chamber 26 against the outlet channel 5o and completely releases the exhaust air chamber 28
against this outlet channel 5o free. Conversely, the lower flap 56 closes the exhaust air chamber 28 completely against the outlet channel 52 and completely releases the supply air chamber 26 against this outlet channel 52. The ventilation device therefore works in pure air circulation mode.

In this embodiment, too, in that shown in FIG. 5c Position the supply air fan 3o can be switched off and the ventilation unit closes the room completely airtight outwards. The outlet channel 5o is also directed upwards / so that the air flow supplied to the interior of the room is first directed against the ceiling.

In a modification of the embodiment shown in FIGS. 5a to 5c the hinged flaps 54 and 56 can be used

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can also be replaced by sliders that alternate the Connect the supply air chamber 26 and the exhaust air chamber 28 to the outlet ducts 5o and 52, respectively. This slide can for example surround the radial fans 3o and 32 coaxially on their lateral surface and to release them with respect to them or be rotatable to close the outlet openings.

In the embodiment shown in Figures 6a and 6b the housing 1o of the ventilation device is seated in the room wall 24 such that it can pivot about a horizontal axis 58. The partition wall 12 is completely continuous in this embodiment, so that it always completely separates the supply air chamber 26 from the exhaust air chamber 28.

The supply air chamber 26 has an outlet opening 6o on its upper inclined lateral surface, while the exhaust air chamber 28 has an outlet opening 62 on its inclined lower lateral surface.

The outlet opening 6o reaches the one end position of the pivoting movement of the housing 1o shown in FIG. 6a the supply air chamber 26 on the inside of the room wall and the outlet opening 62 of the exhaust air chamber 28 reaches the outside of the room. The whole of the supply air fan 3o fresh air sucked in is thus conveyed inwards, while the entire room sucked in by the exhaust fan 32

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air is conveyed to the outside. The ventilation unit is working thus in pure supply air / extract air operation.

In the other end position of the pivoting movement shown in FIG. 6b of the housing 1o is the outlet opening Go of the supply chamber 26; on the outside of the room wall 24 and the outlet opening 62 of the exhaust air chamber 28 on the Inside of the room. The entire sucked in by the supply air fan 3o Fresh air is thus conveyed to the outside again, while the entire room air sucked in by the exhaust air blower 32 as Recirculated air gets back into the interior of the room. The device works thus in pure air circulation operation,. - '

As is readily apparent, the ventilation device also in intermediate positions between the end positions of the 6a and 6b operate in mixed air mode, in which fresh air is supplied to the interior of the room and partly to circulating air will.

The embodiment also has the advantages explained above on that in the position shown in Fig. 6b, the supply air fan 3o can be completely switched off and in this position the inside of the room is airtight the outside of the room is closed.

In the embodiment of FIGS. 6a and 6b,

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the outlet opening of the supply air chamber 26 also on the underside and the outlet opening of the exhaust air chamber 28 on the
Be arranged top. The embodiment shown is to be preferred, however, since in this embodiment the often cooler supply air portion of the air flow supplied to the interior of the room is always directed upwards against the ceiling
while the air flow directed downwards into the room consists only of circulating air and therefore has no temperature difference compared to the room air.

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Claims (18)

PATENT CLAIMS M.J Ventilation unit for supply air, exhaust air and recirculating air operation with a housing which can be inserted into a wall of the room to be ventilated and which is converted into a Supply air chamber and is divided into an exhaust air chamber, with a supply air radial fan arranged in the supply air chamber, the supply air is drawn in axially from the outside of the room and blows out radially into the supply air chamber, with an exhaust air radial fan arranged coaxially with the supply air fan in the exhaust air chamber, the Exhaust air is sucked in axially from the inside of the room and blows out radially into the exhaust air chamber, and with outlet openings of the supply air and exhaust air chamber, thereby characterized in that the outlet openings (34,36; 46, 46 ', 48, 48'; 6o, 62) of the supply air chamber (26) and the exhaust air chamber (28) can be brought into connection pivotably with the outside of the room or the inside of the room are. 2. Ventilation device according to claim 1, characterized in that the housing (1o) is firmly inserted in the room wall (24) is that an outlet opening (34) after Postal checking account: Karlsruhe 76979- ank AG Villingen (BLZ 69470039) 146332 ORiQiNAL INSPECTED Outside of the room and an outlet opening (36) after the inside of the room opens, and that the partition (12) has pivotable flaps (38, 4o), which the outlet openings and alternately connect them to the air inlet chamber (26) and the air outlet chamber (28). 3. Ventilation device according to claim 1, characterized in that that the housing (1o) is firmly inserted into the room wall (24), that the housing one towards the inside of the room has an opening outlet channel (5o) and an outlet channel (52) opening to the outside of the room, and that the supply air chamber (26) and the exhaust air chamber (28) each with a variable flow cross-section " Open into these outlet channels (5o. And 52). 4. Ventilation device according to claim 3, characterized in that the partition (12) has pivotable flaps (54 and 56), each between the outlet opening (46) of the supply air chamber (26) and the outlet opening (48) of the exhaust air chamber (28 ) can be pivoted into the outlet channel (5o) closing position or between a position closing the outlet opening (46 ¹ ) of the supply air chamber (26) and a position closing the outlet opening (48 ') of the exhaust air chamber (28) into the outlet channel (52). 9 Q 9 8 4 Iy f OO 3 Π 5. Ventilation device according to claim 3, characterized in that the outlet openings of the air inlet chamber (26) and the exhaust air chamber (28) in the outlet channels (5o or 52) closing slides are provided. 6. Ventilation device according to claim 1, characterized in that the housing (1o) in the room wall (24) by an in the plane of the partition (12) extending and perpendicular to the axis of the fan (3o, 32) axis (58) pivotable is mounted that the partition (12) is continuous and that the supply air chamber (26) has an outlet opening (6o) and the exhaust air chamber (28) has an outlet opening (62), which are in the two end positions the pivoting movement of the housing (lo) are located on opposite sides of the room wall (24). 7. Ventilation device according to one of the preceding claims, characterized in that the supply air fan (3o) and the exhaust fan (32) each have a separate drive motor. Ventilation device according to claim 7, characterized in that the supply air fan (3o) and the exhaust air fan (32) are designed identically. 9. Ventilation device according to one of claims 2, 3, 4 or 5, 909844/0030 characterized in that the flaps (38, 4o; 54, 56) or slides are symmetrical by a common drive are pivotable to each other. 10. Ventilation device according to one of claims 1 to 9, characterized in that that a step-by-step pivoting between two or more positions of the pivoting movement is provided is. 11. Ventilation device according to claim 1o, characterized in that an actuating magnet causing the pivoting or Hand lever (44) is provided. 12. Ventilation device according to one of claims 1 to 9, characterized characterized in that a continuous pivoting is provided between two end positions. 13. Ventilation device according to claim 12, characterized in that a servomotor or hand lever (44) for continuous Adjustment is provided. 14. Ventilation device according to one of claims 1o - 13, characterized characterized in that the pivoting is controlled by a control element, e.g. temperature, humidity sensor, smoke, Gas detector or the like. Controllable. 909844/0030 15. Ventilation device according to one of the preceding claims, characterized in that the housing (1o) has the shape of a straight prism with possibly rounded Has longitudinal edges and lateral surfaces, which is designed symmetrically to the partition wall (12). 16. Ventilation device according to claim 15, characterized in that that the housing (1o) in the area of the suction openings (18) the fan (3o, 32) and in the area of the outlet openings (34, 36; 5o, 52; 6o, 62) blind slats (16, 2o). 17. Ventilation device according to claim 15 or 16, characterized in that the housing (1o) has two identical faces on each of its end faces forming the base of the prism Has side walls (14). 18. Ventilation device according to one of claims 15 to 17, characterized characterized in that the outer surfaces of the housing (1o) are formed from extrusion profiles (16, 2o, 22). 909844/0030