EP2515048A2 - Ventilation box - Google Patents

Abstract

The ventilation box (100) has housing (1) in which an air chamber (2) is arranged. The air chamber is provided with device-side air supply portions (4,5,6',7'). The air ports (6,6a,7,7a) are arranged in the separate zone (2c) of an air chamber of the housing. Each of the air ports are connected with the air lines (60,60a,70,70a) to the air chamber, in which the air lines are arranged in a common plane. A separator is provided for separating the air chamber into supply air chamber and an exhaust-air chamber.

Description

The invention relates to a ventilation box for a ventilation system, for example for a central residential ventilation system.

Moreover, the invention relates to a ventilation system, such as a central living room ventilation system with such a ventilation box. Such ventilation systems come, as already mentioned, for example in the form of a living room ventilation system, but also for ventilating several offices, classrooms, several apartments in residential buildings, etc. are used.

Controlled mechanical ventilation systems with heat recovery remove air from humid or odor-laden rooms (= exhaust air), whereby at the same time conditioned outside air (= supply air) is supplied to the recreation rooms. The air distribution and air collection is predominantly carried out by means of pipe systems with circular cross-sections in the dimensions 100mm, 125mm, 150mm and 160mm, with predominantly standardized rigid spiral ducts made of galvanized sheet steel prevail with fittings. For each room or per air passage, only one pipe is required as a rule. The distribution or collection of air takes place almost exclusively by means of branches in the form of a tree system. When installing the separate exhaust air and air supply systems, there is often an unavoidable crossover or overlapping of exhaust air and supply air lines. The skipping air ducts at the crossing points significantly increase the installation heights of installation levels. Building heights in ceilings or floors of more than 20 - 25 cm find little design and constructive acceptance. In order to lower the installation height of the installation level, special intersections are also offered, which, however, consciously accept a reduction in cross-section. The disadvantages of this cross-sectional constriction are the higher pressure loss, the increased flow noise and the very limited cleanability. A cleaning is available with the Methods only up to the crossroads, but not beyond possible. A crossover point thus represents the end of a cleaning section. The branching devices used in the system represent a similar type of problem. Since the cleaning brushes can not be directed in both branch directions by means of a flexible shaft, the branch itself also represents the end of a cleaning section. In practice As a rule, however, for reasons of design or for reasons of cost, an additional cleaning opening, which is always accessible from the outside, is dispensed with. A complete cleaning or the replacement of non-cleanable sections or components of the ventilation system is not possible in many systems and thus contradicts the requirements of the applicable hygiene standards.

In many floor plans would be due to the annular arrangement of the rooms around an anteroom and a star-shaped air distribution or air collection better suited than a tree-shaped distribution or collection system. With the air boxes available on the market, which are usually intended only for the air supply system, but also the problem of crossing points between supply and exhaust air lines can not be solved.

The described disadvantages and limitations of rigid pipe systems with larger diameters in the integration in the building have led to the rapid spread of special flexible plastic pipe systems with small pipe diameters in the range of 50 to 80mm. However, the use of significantly smaller pipe cross sections requires several pipes per room or per passage. The collection or distribution of the air takes place exclusively via a flat or store-center star-shaped distribution by means of air boxes (ventilation boxes). A crossover of the individual exhaust air and supply air lines is in the small pipe diameters used usually no problem in the integration in the building. However, these flexible pipe systems also have disadvantages that are due to the large number of tubes and the total length of the pipe. Compared to piping systems with only one pipe per outlet or room, the flexible plastic systems cause problems due to the less favorable hydraulic diameter higher pressure losses and thus an increased power requirement for air delivery. The small cross-sections, the large inner pipe surfaces and pipe lengths make significantly shorter cleaning intervals necessary. Plastic pipes which are traversed by dry air do not exclude the possibility of electrostatic charging, which may be conducive to the adhesion of dust.

It is an object of the invention to provide a ventilation system with an air box or an air box for such a ventilation system, in which or by means of which the above-mentioned problems can be solved. At the same time, the main advantages of pipe systems with large cross-sections and the advantages of star-shaped air distribution or air collection can be combined.

This object is achieved with a ventilation box and a ventilation system with such a ventilation box mentioned above, wherein according to the invention the ventilation box consists of a housing, wherein in the housing at least one air chamber is arranged, wherein the at least one air chamber has at least one device-side air connection, and wherein the housing at least two room air connections are arranged in a separate from the at least one air chamber portion of the housing, and wherein the at least two arranged in the separate chamber of the air chamber room air connections are each connected to an air line to the air chamber, and wherein the at least two air ducts in a common plane.

Due to the special construction of the air box according to the invention, in which the air ducts lie in a common plane (ie the longitudinal axes of the air ducts lie in a common plane), this has a particularly low structure and can therefore be installed to save space. The air box, also referred to as a "ventilation box", is a central component in a ventilation system and can be designed as Luftverteilkasten (for distributing the supply air), air collection box (for collecting the exhaust air) or preferably as a combined air distribution and - collecting box.

"Equipment-side" connection means that air usually comes from such a connection from an air treatment device, such as a heat exchanger, or flows to this air treatment device. But it can also be provided that no such air treatment device is present, in this case, outside air passes directly through such a "device-side" connection in the ventilation box or air can be transported via such a "device-side" connection to the outside.

In order to operate the ventilation box as an air distribution box, it is provided that the at least one device-side air connection is a device-side supply air connection.

Fresh air / fresh air passes either directly or preferably via the ventilation unit of the ventilation system, optionally after flowing through a heat exchanger via the one or more device-side supply air connections in the air box and is divided from there to the individual rooms.

In order to operate the ventilation box as an air collecting box is provided that the at least one device-side air connection is a device-side exhaust air-air connection. The exhaust air collected from the individual rooms in the ventilation box is transported away from the building via this device-side exhaust air connection or connections, whereby the exhaust air usually still flows through the ventilation unit and possibly the heat exchanger and then exhausts as exhaust air emanating from the building.

It is particularly advantageous if at least two device-side air connections are provided, wherein at least one device-side air connection is a device-side supply air connection and at least one device-side air connection is a device-side exhaust air connection.

The air box can then be operated as a combined air distribution and collection box.

In this context, it is further expedient if at least one of the room air connections is an inlet air connection which is connected to the air chamber by means of a supply air line, and that at least one of the room air connections is an exhaust air connection which is connected by means of an exhaust air connection. Air line is connected to the air chamber.

Corresponding lines are then connected to these connections in order to transport the supply air to the supply air spaces and to be able to remove the exhaust air from the exhaust air spaces.

In the combined operation of the air box Zuluftverteilkasten and exhaust collection box is provided that at least one separation device for separating the at least one air chamber in a supply air chamber and an exhaust air chamber is provided, wherein the one device side supply air connection and the more device-side supply air connections in the supply air-air chamber opens / open and wherein the one device-side exhaust-air connection and the more device-side exhaust air-air connections opens / open into the exhaust air-air chamber.

It is advantageous if the separating device comprises at least one partition which divides the air chamber into the two air chambers, one air chamber directly adjoining the at least two air ducts, while the other air chamber is spaced from the at least two air ducts.

Preferably, the Zuluftkammer closes directly to the air lines in the housing of the air box, while the exhaust chamber "removed", ie spaced from the air lines and not directly connected to this. In this way, the supply air fans (see below) can be better integrated and the easy accessibility to the air ducts or fans in the housing of the air box without removal of the partition wall is made possible.

It is particularly advantageous if the at least one partition extends obliquely upward from a lower boundary plane of the air chamber up to the opposite upper boundary surface.

In a vertical longitudinal section through the air chamber, the partition runs obliquely, quasi "diagonal", where diagonal does not necessarily mean that the partition has its starting or end points in a corner.

This oblique (and not slightly vertical or horizontal) extending partition has the advantage that the outcrossing between supply and exhaust air ducts directly inside the box, namely within the air chamber is possible. This crossover points can be avoided in the piping outside the box, whereby a low construction height can be realized even when using pipe systems with larger diameters.

For this purpose, it is further provided that the separating device, in particular the partition wall, has one or more openings, wherein the at least one device-side supply air connection or the at least one device-side exhaust air-air connection via at least one opening by means of at least one connecting piece with the at least two air lines adjoining air chamber is connectable, and wherein the at least one exhaust air duct or the at least one supply air duct can be connected via at least one opening in the separating device by means of at least one connecting piece with the spaced apart from the air ducts air chamber.

A device-side air connection is connected to a connector with "its" associated with him partial air chamber and is connected via this partial air chamber with the associated air lines, while the other device-side air connection opens directly into "his" air chamber and the corresponding air lines via a connecting piece are connected to the partial air chamber.

The connecting piece is preferably a pipe bend, ie a curved pipe, so that an optimal interaction with the inclined partition wall results.

During production, all theoretically possible openings are provided and the unneeded are closed during installation of the air box in the ventilation system, for example with a lid. If later, for example, from a Zuluftraum become an exhaust air space, only the associated closed opening to open and connect them with a connector to the exhaust air chamber.

In a specific embodiment of the invention can be provided that the air chamber of the ventilation box has at least one room air connection.

Alternatively or preferably additionally, it can be provided that the air chamber has at least one room exhaust connection.

Such additional room air connections, which directly - and not via air ducts - with the air chamber, i. connected to the respective partial air chamber, increase the number of possible spaces that can be connected to the ventilation box.

To target the amount of air, i. For example, to be able to set per room, it is also advantageous if in each case at least one air conveyor is arranged in one or more of the air lines.

It should be noted at this point that the attachment of one or more air handling devices in one or more air supply lines and possibly also in one or more exhaust ducts of an air box, regardless of the specific design of the air box can also be beneficial, ie this attachment of air conveyors can be advantageous even if the air lines are not in a common plane.

In particular, it is advantageous if the one or more air conveyors are arranged in the one or more, preferably in all supply air ducts.

The "actual" air delivery takes place in the ventilation unit (air treatment unit), which is interposed between the device-side connections and the outside air. This ventilation unit contains at least one supply air and at least one exhaust air conveyor, and preferably in this ventilation unit, a heat exchanger is integrated.

With the air conveyors in the supply air ducts, the desired air volume can be set for each ZuluftRaum. In the exhaust air ducts such air conveyors are not necessary when the ventilation unit is a balance control of the exhaust fan. Otherwise, air conveying devices may also be expedient in the exhaust air lines.

The air conveying devices are preferably fans, in particular speed-adjustable axial fans. Thus, the air volume flow for each channel can be adjusted without affecting the air flow rates of the other air channels.

It is also particularly advantageous if the flow cross-section of the at least one device-side air connection and the flow cross-section of each room air connection are identical.

A typical diameter with a circular cross-section is 125mm.

The air ducts in the housing of the ventilation box have either identical, but preferably slightly smaller cross-section, for example 100mm, so that the housing can be kept flat and the soundproofing can be improved.

The identical cross-section of the device-side air connections and the room air connections and the generally relatively large cross-section causes the flow velocity is comparatively low, whereby the acoustic load can be kept particularly low by flow noise and also only small pressure losses occur.

The connecting pieces (pipe bends), which connect the device-side connections with the associated partial air chamber, have the same cross-section as the device-side connections themselves.

Due to the advantageous construction, the air velocity in the flow cross-section of the partial air chambers and always lower than in the room-side or device-side connections. The pressure losses and flow noise are thereby minimized.

• Fig. 1 eine Draufsicht auf eine erste Konfiguration eines erfindungsgemäßen Lüftungskastens in einer schematischen Darstellung,
• Fig. 2 einen Vertikalschnitt durch den Lüftungskasten aus Figur 1 entlang der Linie A-A,
• Fig. 3 eine schematische Darstellung der Luftkammer des Lüftungskastens aus Figur 1,
• Fig. 4 eine Draufsicht auf eine zweite Konfiguration eines erfindungsgemäßen Lüftungskastens in einer schematischen Darstellung,
• Fig. 5 einen Vertikalschnitt durch den Lüftungskasten aus Figur 2 entlang der Linie B-B, und
• Fig. 6 eine schematische Darstellung der Luftkammer des Lüftungskastens aus Figur 5.

In the following the invention is discussed in more detail with reference to the drawing. In this shows

• Fig. 1 a top view of a first configuration of a ventilation box according to the invention in a schematic representation,
• Fig. 2 a vertical section through the ventilation box off FIG. 1 along the line AA,
• Fig. 3 a schematic representation of the air chamber of the ventilation box FIG. 1 .
• Fig. 4 a top view of a second configuration of a ventilation box according to the invention in a schematic representation,
• Fig. 5 a vertical section through the ventilation box off FIG. 2 along the line BB, and
• Fig. 6 a schematic representation of the air chamber of the ventilation box FIG. 5 ,

FIGS. 1 and 2 show a ventilation box 100 for a (not shown) ventilation system, for example, for a central residential ventilation system. The ventilation box 100 consists of a housing 1, wherein in the housing 1, an air chamber 2 is arranged. Furthermore, located in the housing 1 is a separate from the air chamber 2 area 2c.

The air chamber 2 has two device-side air connections 4, 5, which open into the air chamber 2, wherein a device-side air connection, a device-side supply air port 4 and the other device-side air port is a device-side exhaust air port 5.

"Equipment-side" connection means that air usually comes from such an air conditioning device, such as a ventilation unit with a preferably integrated heat exchanger, or flows to this air treatment device. That is, the air treatment device is connected via the device-side connections with the ventilation box via corresponding pipes, etc. However, it can also be provided that no such air treatment device is present, in this case, outside air passes directly (and not via the air treatment device) via such a "device-side" connection (via appropriate piping) in the ventilation box or can air over such a " device-side "port to be transported to the outside (again via a corresponding piping, etc.).

Outside air / fresh air thus enters either directly or preferably via a not shown ventilation device of the ventilation system, optionally after flowing through a heat exchanger, on the device-side supply air port 4 in the air box 1 and from there - as described below - divided into the individual rooms.

About the device-side exhaust port 5, the collected in the ventilation box from the individual exhaust air exhaust air is removed from the building, the exhaust air before usually still flows through the ventilation unit and possibly the heat exchanger to then escape as exhaust air from the building.

The air box 1 can thus be operated as a combined Luftverteil- and -sammelkasten.

In the housing 1, in the area 2c of the housing 1 separated from the air chamber 2, there are four room air connections 6, 6a, 7, 7a, these room air connections 6, 6a, 7, 7a each having an air line 60, 60a, 70, 70 a are connected to the air chamber 2.

The air ducts 60, 60a, 70, 70a pass practically through the area 2c separated from the air chamber 2 inside the housing 1 and open into the air chamber 2.

In this case, the four air lines 60, 60a, 70, 70a lie in a common plane.

The air ducts (channels) 60, 60a, 70, 70a are formed, for example, by sound-insulating material 3 (eg acoustic foam).

In the variant shown, two of the room air connections as supply air connection 6, 6a in use, these are each connected to a supply air line 60, 60a with the air chamber 2, and two of the room air connections are exhaust port 7, 7a in use, which are connected by means of exhaust air lines 70, 70a with the air chamber 2.

Corresponding lines / piping are then connected to these room air connections in order to transport the supply air to the supply air spaces and to be able to remove the exhaust air from the exhaust air rooms.

Thus, supply air and exhaust air are not mixed together in the air chamber, it is provided that a separator separates the air chamber 2 in a supply air chamber 2a and an exhaust air chamber 2b, as in FIG. 2 and schematically in FIG. 3 easy to recognize.

The device-side supply air connection 4 opens into the supply air chamber 2a, and the device-side exhaust air connection 5 opens into the exhaust air chamber 2b.

The separation device preferably consists of a partition wall 8, which divides the air chamber 2 into the two air chambers 2a, 2b, wherein an air chamber 2a connects directly to the at least two air ducts 60, 60a, 70, 70a, while the other air chamber 2b from the air ducts 60th , 60a, 70, 70a is arranged at a distance.

Preferably, the supply air chamber 2a directly connects to the air ducts in the housing of the air box, while the discharge chamber 2b "removed", i. is spaced from the air ducts and not directly connected to these. In this way, the supply air fans (see below) can be better integrated and the easy accessibility to the air ducts or fans in the housing of the air box without removal of the partition wall is made possible.

As will be described later, the term "partial air chamber 2a adjacent to the air ducts" refers only to the location of this air chamber 2a; but this does not necessarily mean that all of these lines in the final state of development actually open into the partial air chamber 2a, but it may be that some or some of them also connected to the other part-air chamber 2b.

The partition wall 8 extends obliquely upward from a lower boundary plane of the air chamber 2 to the opposite upper boundary surface. In a vertical longitudinal section through the air chamber ( FIG. 2, FIG. 3 ) runs the Divider diagonal, almost "diagonal", where diagonal does not mean that the partition has its starting or end points in a corner.

This sloping (and not slightly vertical or horizontal) extending partition has the advantage that the outcrossing between supply and exhaust air ducts directly within the box, namely within the air chamber 2 is possible. This crossover points can be avoided in the piping outside the box, whereby a low construction height can be realized even when using pipe systems with larger diameters.

For this purpose, it is further provided that the partition wall 8 openings 9, 10; 9a, 9b, 10a, 10b. In the manufacture of the ventilation box 1, all theoretically possible openings are provided and the unneeded are closed during the installation of the air box in the ventilation system, for example with a lid. If later, for example, from a Zuluftraum become an exhaust air space, only the associated closed opening to open and connect them with a connector to the exhaust air chamber.

Looking now FIGS. 1 and 2 , it can be seen that the openings 9a, 9b and 9 are closed. The device-side supply air port 4 is connected to a connector 11 through the opening 10 in the partition with the supply air chamber 2a, and from this flows the supply air in the supply air ducts 60, 60a and to the terminals 6, 6a.

The device-side exhaust air connection 5 opens directly into the partial air chamber 2b (exhaust air chamber), and the lines 70, 70a are connected via connectors 12 via the openings 10a, 10b to the air chamber 2b, so that exhaust air from the rooms via the connections 7, 7a and the lines 70, 70a can enter the air chamber 2b.

A device-side air connection is thus connected to a connector with "his" associated with him partial air chamber and is over this partial air chamber connected to the associated air lines, while the other device-side air connection opens directly into "his" air chamber and the corresponding air lines are connected via a respective connecting piece with the partial air chamber.

The connecting pieces 11, 12 are preferably pipe bends, so curved tubes, so that there is an optimal interaction with the sloping meeting wall.

In a fundamental consideration of the invention, regardless of the figures, in each case a connection to the air chamber 2 is necessary, which acts as a device-side connection (supply air / exhaust air). For combined operation (supply air / exhaust air) two such device-side connections are provided.

In the variant off FIGS. 1 and 2 If the connection 4 to the air chamber is occupied as the device-side supply air connection, the connection 5 is occupied as the device-side exhaust air connection.

In principle, however, the air chamber 2 can also have a plurality of connections, for example as in FIG FIG. 1 shown, the terminals 4, 5 and 6 'and 7'. In the specific embodiment of the invention according to FIG. 1 there are two ports 6 'and two ports 7, wherein the terminals 6' serve as Raumzuluftanschlüsse 6 ', since they open into the supply air chamber 2a, and the two ports 7' open directly into the partial air chamber 2b (exhaust chamber) are So room exhaust connections.

Of course, only one but also more than two connections 6 'as well as one or more than two connections 7' could be provided.

The terminals 4, 5 are located on the end face of the air chamber 2, that is, on the surface which is the exit surface of the lines 60, 60a, 70, 70a in the air chamber 2 opposite. Due to the arrangement of the partition wall 8, both ports 4, 5 open into the same partial air chamber 2b, so that one of the terminals 4, 5 when used as Device-side supply and exhaust connections must be connected with a connector with the other air chamber 2a.

The terminals 6 ', 7' are located on the side surfaces of the air chamber 2, so that they open into different air chambers 2a, 2b. (Basically, it would also be possible to attach to the top and / or bottom connections, but which is not favorable because of the then necessary space requirement.)

It can therefore basically any of the terminals 4, 5, 6 ', 7' used as a device-side connection, which has the advantage that with a suitable choice none of the device-side connections must be connected to its partial air chamber, but opens directly into this ,

When configuring FIG. 1 For example, a connection 6 'could be used as a device-side supply air connection instead of connection 4. If connection 4 is not required as a room supply connection, then it saves the installation of a connector, the opening 10 would then be closed.

In this direction, considerations regarding various configurations are possible, which should not be discussed here.

To target the amount of air, i. For example, to be able to set per room, it is also advantageous if in the supply air ducts 60, 60a, each an air conveyor 14 is arranged.

The "actual" air delivery takes place in the ventilation unit (air treatment unit), which is interposed between the device-side connections and the outside air. This ventilation unit contains at least one supply air and at least one exhaust air conveyor, and preferably in this ventilation unit, a heat exchanger is integrated.

The static pressures at the device-side connections are kept constant via an external control and these external air-conveying devices in the connected ventilation device.

The air conveying devices are preferably fans, in particular speed-adjustable axial fans. Thus, the air volume flow for each channel can be adjusted without affecting the air flow rates of the other air channels.

It is also particularly advantageous if the flow cross-section of the at least one device-side air connection 4, 5 and the flow cross-section of each room air connection 6, 6a, 7, 7a is identical.

A typical diameter with a circular cross section is 125 mm.

The air ducts in the housing of the ventilation box have either identical, but preferably slightly smaller cross-section, for example, 100mm, so that the housing kept flat, and the soundproofing can be improved.

The identical cross-section of the device-side air connections and the room air connections and the generally relatively large cross-section causes the flow velocity is comparatively low, whereby the acoustic load can be kept particularly low by flow noise and also only small pressure losses occur.

The connecting pieces (pipe bends), which connect the device-side connections with the associated partial air chamber, have the same cross-section as the device-side connections themselves.

The pipe bends, which connect the air ducts in the ventilation box with their air chamber, have the same cross section / diameter as the air ducts, so for example 100mm diameter.

FIGS. 4 to 6 show yet another variant that is different from that Figure 1-3 only differs in that the two device-side ports 4, 5 have reversed the position with regard to their function (supply air, exhaust air), as well as the two room air connections 6a, 7 and the associated lines 60a, 70 have their position reversed. The closed openings are again denoted by 9, 9a and 9b.

Claims (15)

Ventilation box (100)
for a ventilation system, for example, for a central residential ventilation system, wherein
+) the ventilation box (100) consists of a housing (1),
+) wherein in the housing (1) at least one air chamber (2) is arranged,
+) wherein the at least one air chamber (2) has at least one device-side air connection (4, 5, 6 ', 7'),
+) and wherein in the housing (1) at least two room air connections (6, 6a, 7, 7a) are arranged in a separate from the at least one air chamber (2) region (2c) of the housing (1),
+) and wherein the at least two room air connections (6, 6a, 7, 7a) arranged in the region (2c) separated from the air chamber (2c) each have an air line (60, 60a, 70, 70a) with the air chamber (2) are connected,
+) and wherein the at least two air ducts (60, 60a, 70, 70a) lie in a common plane. Ventilation box according to claim 1, characterized in that the at least one device-side air connection is a device-side supply air-air connection (4). Ventilation box according to claim 1 or 2, characterized in that the at least one device-side air connection is a device-side exhaust air-air connection (5). Ventilation box according to one of claims 1 to 3, characterized in that at least two device-side air connections are provided, wherein at least one device-side air connection is a device-side supply air connection (4) and at least one device-side air connection is a device-side exhaust air connection (5). Ventilation box according to claim 4, characterized in that at least one of the room air connections is a supply air connection (6, 6a) which by means of a supply air line (60, 60a) is connected to the air chamber (2), and that at least one of the room air connections an exhaust port (7, 7a) which is connected by means of an exhaust air line (70, 70a) with the air chamber (2). Ventilation box according to claim 4 or 5, characterized in that at least one separating device is provided for separating the at least one air chamber (2) into a supply air chamber (2a) and an exhaust air chamber (2b), wherein the one device side supply air connection ( 4) or the several device-side supply air connections (4) in the supply air chamber (2 a) opens / and where the one device-side exhaust air connection (5) or the plurality of device-side exhaust air connections (5) in the exhaust air Air chamber (2b) opens / lead. Ventilation box according to claim 6, characterized in that the separating device comprises at least one partition wall (8) which divides the air chamber (2) into the two air chambers (2a, 2b), wherein an air chamber (2a) directly to the at least two air ducts (60 , 60a, 70, 70a), while the other air chamber (2b) is spaced from the at least two air ducts (60, 60a, 70, 70a). Ventilation box according to claim 6 or 7, characterized in that the at least one partition wall (8) extends from a lower boundary plane of the air chamber (2) obliquely upwards to the opposite upper boundary surface. Ventilation box according to one of claims 6 to 8, characterized in that the separating device, in particular the partition wall (8), one or more openings (9, 10, 9a, 9b, 10a, 10b), wherein the at least one device-side supply air connection (4) or the at least one device-side exhaust air-air connection (5) via at least one opening (10) by means of at least one connecting piece (11) with the at least two air lines (60, 60a, 70, 70a) subsequent air chamber (2a) connectable is, and wherein the at least one exhaust air duct (70, 70a) or the at least one supply air duct (60, 60a) via at least one opening (10a, 10b) in the separating device by means of at least one connecting piece (12) with the the air lines (60, 60a, 70, 70a) spaced air chamber (2b) are connectable. Ventilation box according to one of claims 1 to 9, characterized in that the air chamber (2) has at least one room air connection (6 '). Ventilation box according to one of claims 1 to 10, characterized in that the air chamber (2) has at least one room exhaust connection (7 '). Ventilation box according to one of claims 1 to 11, characterized in that in each case at least one air conveying device (14) is arranged in one or more of the air ducts (60, 60a, 70, 70a). Ventilation box according to claim 12, characterized in that the one or more air conveying means (14) in the one or more, preferably in all supply air ducts (60, 60a) are arranged. Ventilation box according to one of claims 1 to 13, characterized in that the flow cross-section of the at least one device-side air connection (4, 5) and the flow cross-section of each room air connection (6, 6a, 7, 7a) are identical. Ventilation system, for example central living space ventilation system with a ventilation box according to one of claims 1 to 14.

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