Ventilation device with sound protection, assembly

Abstract

The invention relates to an air handling device (7) with sound insulation for conveying air through a wall (2) of a building (1), comprising at least one air duct (15), in particular an exhaust air duct, which has an exhaust air opening (17) at one end and an outlet opening (18) at the other end, wherein the air duct (15) is designed to completely or partially penetrate an opening (10) in the wall (2), such that the exhaust air opening (17) is located on a first side of the wall (2), in particular facing an acoustic source room of the building (1), and the outlet opening (18) is located on a second side of the wall (2), in particular facing an acoustic receiving room of the building (1), and comprising a silencer (11) associated with the outlet opening (18), and wherein the air duct (15) is guided through a trough-shaped housing (12) which has a housing wall (14) and a housing bottom (13), wherein the housing wall (14) is designed to is trainedwith an end face spaced apart from the housing base (13) to seal against the second side of the wall (2). It is provided that the silencer (11) has an air outlet chamber (26) which has a housing partition (25) extending parallel to and spaced apart from the housing base (13) to the housing wall (14), wherein the outlet opening (18) of the air duct (15) opens through the housing partition (25) into the air outlet chamber (26), and that an air outlet (27) is formed in a section of the housing wall (13) in the area of ​​the air outlet chamber (26) spaced apart from the outlet opening (18), and that at least one sound-absorbing material layer (22) is assigned to at least the air outlet chamber (26).

Description

[0001] The invention relates to a ventilation device for passing air through a wall of a building, comprising at least one air duct, in particular an exhaust air duct, which has an exhaust air opening at one end and an outlet opening at the other end, wherein the air duct is designed to extend completely or partially through an opening in the wall, so that the inlet opening is located on a first side of the wall, in particular facing an acoustic transmission chamber of the building, and the outlet opening is located on a second side of the wall, in particular facing an acoustic reception chamber of the building, and comprising a silencer which is assigned to the outlet opening, in particular is arranged downstream of it, and wherein the air duct is guided through a trough-shaped housing which has a housing wall and a housing base, wherein the housing wall is designed to bear against the second side of the wall with an end face spaced from the housing base.

[0002] Furthermore, the invention relates to a ventilation arrangement in a building, having at least one wall which separates a first room, in particular an acoustic transmission room, and a second room, in particular an acoustic reception room, from one another, wherein, for the ventilation and / or air conditioning of the first room, a ventilation device designed as described above for passing air through the wall is assigned to the wall.

[0003] Ventilation systems of the type mentioned above are known from the prior art. In order to supply and / or remove air, in particular fresh air, exhaust air and / or conditioned air, it is known to direct an air flow through a room wall. This is considered a advantageous alternative to supplying or removing air through ventilation systems arranged in a room ceiling or in a suspended ceiling. By supplying and removing air through the wall of the building, the advantage is achieved that rooms can be built lower, thus significantly increasing the space utilization of a multi-story building. In addition to the visual protection that a wall in a building offers between adjacent rooms or between a room and a corridor in the building, walls of a building also provide sound insulation.The walls protect neighboring rooms and their occupants from unwanted sound transmission in the form of noise and speech. In rooms in which confidential content is discussed or acoustically presented, sound insulation is particularly necessary to ensure that people in or walking past in the neighboring room, especially the hallway, cannot hear what is being discussed or presented in the room. The sound path from an office room to the hallway is particularly critical from an acoustic perspective, especially if the exhaust air is used as overflow air in the hallway and there is no separate exhaust air duct for the exhaust air. To ensure that the supply air, possibly conditioned, can flow from the hallway into the office room, for example, and from the office room as exhaust air or overflow air into the hallway, the wall in between must be provided with at least one opening for the air to pass through.This at least one opening reduces the overall soundproofing effect of the wall, so that additional sound insulation is required in order to guarantee sound insulation values ​​that correspond to a continuously closed wall, as is usually provided between two adjacent office rooms. Sound can be transmitted in particular through the exhaust air extracted from the room. It is therefore necessary to provide a silencer that ensures that sound is not transmitted to a significant extent from one room into the adjacent room, especially the corridor. For this purpose, a so-called telephony or duct silencer is used as a silencer for the exhaust air. The duct silencer is connected to the outlet opening downstream of the air duct and is arranged in the ceiling area of ​​the corridor. The usual length of approx.However, the typical duct silencer's dimensions of 1 m and an outer diameter of up to 200 mm in such applications are very large and consume a significant amount of space within conventional suspended ceilings. The cavity of a suspended ceiling in a corridor or hallway zone must also accommodate supply air ducts for the building's central ventilation or air conditioning system, water circuits for heating and / or cooling units or ceilings, sprinkler systems, and cables for electrical and data connections.

[0004] The present invention is therefore based on the object of creating an air-conditioning device which offers advantageous sound insulation while requiring less space for the silencer.

[0005] The object underlying the invention is achieved by a ventilation device with the features of claim 1. This has the advantage that, through advantageous integration of the silencer into the housing, installation space is saved compared to previously known solutions and, moreover, the desired sound insulation is still reliably guaranteed. To this end, the invention provides that the silencer has an air outlet chamber which has a housing intermediate wall extending parallel to and at a distance from the housing base as far as the housing wall, wherein the outlet opening of the air duct opens through the housing intermediate wall into the air outlet chamber, that in a section of the housing wall in the region of the air outlet chamber, an air outlet is formed at a distance from the outlet opening, and that a sound absorption material layer is assigned to at least the air outlet chamber.

[0006] The silencer is thus integrated into the housing of the ventilation system. The silencer is formed by an air outlet chamber aligned or running parallel to the housing base, extending to the housing wall and thus having a base area almost corresponding to the base area of ​​the housing base and parallel to the housing base, creating a gap or baffle silencer. As a result, the air outlet chamber forms a long and narrow flow path with low flow resistance, which provides advantageous sound insulation, particularly for exhaust air flowing through it. The outlet opening opens through the housing partition wall into the air outlet chamber and thus perpendicular to the longitudinal extent of the air outlet chamber.The air duct is optionally aligned or designed towards the outlet opening in such a way that the air flowing into the air outlet chamber from the air duct, in particular exhaust air, does not flow into the air outlet chamber transversely or perpendicularly to the housing base, but rather inclined at an angle thereto in order to minimize flow resistance. The air outlet is designed at a distance from the outlet opening so that a flow path for the exhaust air is created through the air outlet chamber from the outlet opening to the air outlet. The outlet opening is preferably arranged as far away from the air outlet as possible in order to ensure the longest possible flow path through the air outlet chamber. Because the sound absorption material, in particular the sound absorption material layer, is assigned to the air outlet chamber, the air outlet chamber also has a sound-insulating effect for the exhaust air.The extended exhaust air flow path through the air outlet chamber and the sound absorption material associated with the flow path result in advantageous sound insulation of the ventilation system, achieving the aforementioned benefits. Depending on the material used for the sound absorption layer and the length of the flow path, the sound insulation can be adjusted or adapted to the given boundary conditions and requirements.

[0007] According to a preferred development of the invention, the outlet opening is arranged at the end of the air outlet chamber facing away from the section of the housing wall containing the air outlet. This ensures that the outlet opening is positioned as far away from the air outlet as possible, thus maximizing the flow path between the outlet opening and the air outlet, or through the air outlet chamber. This results in the aforementioned advantages. Because the air outlet chamber extends to the housing wall, not only the width of the air outlet chamber but also its height is advantageously utilized to soundproof the exhaust air.

[0008] According to a preferred development of the invention, the sound absorption material layer at least substantially covers the housing base on the side opposite the intermediate housing base. Optionally, the sound absorption material layer extends over the entire housing base, possibly except for a section in which an air supply duct is routed through the housing base. As a result, the air outlet chamber is provided with the sound absorption material layer on the inside, which thus interacts directly with the exhaust air or the exhaust air flow to sound-insulate. Because the sound absorption material layer is arranged on the housing base, it also provides direct sound insulation, which reduces or prevents sound from escaping through the housing base.Optionally, a further layer of sound absorption material is arranged on the intermediate housing floor, in particular the housing floor or opposite the one layer of sound absorption material, so that the exhaust air is guided between two layers of sound absorption material through the air outlet chamber and the sound insulation is further increased there.

[0009] The housing wall preferably has a layer of sound absorption material on the inside of the housing. This means that sound absorption material is arranged not only on the housing base but also on the side wall of the housing, with the sound absorption material layer on the housing wall preferably extending from the housing base beyond the intermediate floor to the front of the housing to optimize sound insulation.

[0010] Furthermore, it is preferably provided that the housing has a further layer of sound absorption material on its front side, which can be placed or is placed on the second side of the wall. The trough-shaped housing can be placed with its free front side, i.e. the side facing away from the housing base, on the second side of the wall. Because there is a further layer of sound absorption material in this area, direct sound insulation is also achieved on the wall itself as soon as the device is mounted on the wall. Because a layer of sound absorption material is also arranged on the housing wall, in particular as described above, the opening in the wall is completely sealed or soundproofed, so that a sound path past the exhaust air opening or the air duct is at least dampened or prevented.

[0011] According to a preferred development of the invention, the housing has a depth extending from the housing base to the front, a width and a height, with the width being greater than the height. The housing therefore preferably has a rectangular basic shape, with the rectangular shape being defined by the height and width. A large width compared to the height results in advantageous ceiling installation of the ventilation device in a suspended ceiling of a corridor in the building if the height is aligned vertically and the width horizontally when installed as intended. The length of the flow path of the exhaust air through the silencer is essentially determined by the width of the housing, which ensures that a very high housing is not necessary and therefore installation is also possible in low suspended ceilings.

[0012] Preferably, the air outlet of the air outlet chamber extends in a strip-like or slit-like manner across the entire or almost the entire height of the housing in the housing wall. The air outlet chamber is thus ultimately open to one side of the housing, resulting in very low airflow resistance. Preferably, the air from the air outlet is discharged into the environment or into the suspended ceiling, reaching the receiver room and thus the second room of the building, where it can be extracted, for example, by a separate ventilation device. The large air outlet not only prevents or reduces exhaust noise, but also ensures advantageous sound absorption.

[0013] Furthermore, it is preferably provided that a further air duct leads through the housing of the device, which has a supply air opening at one end and a connection opening at the other end, wherein the further air duct is designed to protrude through a further opening or the said opening in the wall when the device is in the assembled state, so that the supply air opening is on the first side of the wall and the connection opening is on the second side. The ventilation device is thus designed as a combination air outlet for a wall of a building, which offers both a supply air duct and an exhaust air duct. Preferably, a silencer is also assigned to the further air duct, which serves as the supply air duct. In particular, a further sound insulation element or a layer of sound absorption material is arranged in the region of the supply air opening, for example extending over the supply air opening that faces the room to be ventilated.

[0014] According to a preferred development of the invention, the supply air openings and the exhaust air opening are arranged one above the other with respect to the height of the housing. This provides supply and exhaust air for the room to be ventilated / ventilated through the combination air outlet in a particularly small installation space. In this case, the openings in the wall are also to be designed one above the other. It is also possible to form a single opening in the wall through which both the one and the other air duct are led. This saves installation space, particularly on the transmitter room side, and minimizes the visual intrusion into the wall. Preferably, the air ducts end in the respective opening in the wall or are flush with the wall on the first side.Optionally, the respective air duct extends through the opening to such an extent that it protrudes from the first side of the wall, wherein the protruding section is then preferably assigned a protective grille in the form of a cover or a cap in order to improve the effect and also the visual impression of the device from the side of the acoustic transmission room.

[0015] According to an alternative embodiment of the invention, the supply air opening and the exhaust air opening are arranged next to each other – relative to the height of the housing. This allows the supply air opening and the exhaust air opening to be distributed across the width of the housing, allowing the air flow to be optimized, for example, for the exhaust air, particularly with respect to the silencer. If the supply air and exhaust air openings are designed or arranged at the same height in the wall, further advantages, including visual ones, may result.

[0016] According to a preferred development of the invention, the additional air duct is guided transversely through the air outlet chamber in sections, i.e., transversely to the longitudinal extent or flow path of the air outlet chamber. Thus, the additional air duct extends, in particular, through the housing base, the sound absorption material layer, the air outlet chamber, optionally through the additional sound absorption material layer, and through the housing intermediate base. As a result, the connection opening is arranged, for example, in the area of ​​the housing base and can be easily connected to a central ventilation or air conditioning system. Although the sound absorption material layer is interrupted in the area where the additional air duct passes through the air outlet chamber, the insulating effect is still sufficient to ensure the aforementioned advantages.

[0017] The air outlet chamber is preferably designed such that the height-to-depth ratio is 8:1 to 12:1, in particular 10:1. The air outlet chamber preferably has a height of 100 to 500 mm, in particular 200 to 400 mm, and preferably a depth of 10 to 50 mm, in particular 20 to 40 mm. As a result, the air outlet chamber corresponds to the dimensions of a typical housing of a conventional ventilation system, so that the ventilation system with the advantageous air outlet chamber or with the advantageous silencer can also be used as a replacement device.

[0018] Preferably, the sound absorption material layer is made of an open-pore material, in particular with a flow resistance of more than 5 kPa s / m 2 . The material is thus an acoustically effective material, which, particularly in the silencer, serves to reduce or prevent resonances caused by sound reflections.

[0019] The ventilation system with the features of claim 14 is characterized by the inventive design of the ventilation device. This results in the advantages already mentioned above.

[0020] Further advantages and preferred features and combinations of features emerge in particular from the above descriptions and from the claims. The invention will be explained in more detail below with reference to the drawings. Figure 1 shows a building with an advantageous air-conditioning arrangement, Figures 2A to C show an air-conditioning device of the arrangement in different sectional views according to a first embodiment, and Figures 3A and B show the device in different sectional views according to a second embodiment.

[0021] Figur 1 shows a plan view of a section of a building 1 that has several walls 2 that divide a building floor area into several rooms 3, 4, 5, whereby only three rooms 3, 5 are shown here as an example. The rooms 3, 4 are office rooms that are separated from each other by a wall 2 and from another wall 2 to the third room 5, which forms a corridor of the building 1. The building 1 is in Figur 1 only shown in part, of course building 1 can have additional rooms and / or corridors.

[0022] In the present case, each of the office rooms 3, 4 is assigned a ventilation system arrangement 6, which ensures ventilation and / or air conditioning as well as exhaust ventilation of the respective room 3, 4. Optionally, several of the arrangements 6 can be assigned to the respective room. The respective ventilation system arrangement 6 is arranged in the ceiling area and each has a ventilation device 7, which extends through the wall 2 to the respective room 3, 4 in order to ensure the ventilation and exhaust ventilation of the room 3, 4, and which is connected to a central supply system 8, which, for example, has a supply air duct 9 led through the room 5 and through which fresh air, optionally air-conditioned fresh air, is provided.

[0023] The supply air duct 9 and the respective device 7 are arranged in particular in a suspended ceiling in the corridor or room 5. The wall 2 separating room 5 from rooms 3 and 4 has at least one opening 10 for each of the rooms 3, 4, through which the respective ventilation device 7 is led, at least in part, in order to ensure the ventilation of the respective room 3, 4. The respective opening 10 reduces the sound insulation of the wall 2. To ensure that people in room 5 cannot overhear conversations from rooms 3 and 4 and to meet sound absorption requirements, the respective device 10 has an advantageous sound absorber 11, which will be discussed in more detail below.

[0024] Figuren 2A bis C show one of the air-conditioning devices 6, which are in particular of the same design, in different sectional views. Figur 2Ashows the air-conditioning device 7 in a first longitudinal section in a horizontal plane according to the Figur 2Bdrawn section line AA. The device 7 has a housing 12 which is trough-shaped and has a housing base 13 from which a housing wall 14 protrudes. The housing wall 14 is designed in particular as a circumferential housing wall 14 which extends over the outer circumference of the housing arch 13, thereby creating the trough shape of the housing 12. The device 7 is designed as a combination air outlet which ensures both the ventilation and the exhaust ventilation of the respective room 3, 4. For this purpose, the device 7 has a first air duct 15 and a second air duct 16 separate from the first air duct 15. The air duct 15 is designed as an exhaust air duct and the air duct 16 is designed as a supply air duct. For this purpose, the air duct 15 has an exhaust air opening 17 facing the office room or the acoustic transmission room, through which exhaust air from the room 3, 4 passes into the exhaust air duct or into the air duct 15.Furthermore, the air duct 15 has an outlet opening 18 at its end facing away from the exhaust air opening 17.

[0025] The air duct 16 has a supply air opening 19 at one end, facing or associated with the office space 3 or the first room 3, 4, and a connection opening 20 at its other end. The connection opening 20 protrudes in particular from the housing 12 and serves for connection to the supply line 9. The air duct 16 protrudes partially from the housing 12, so that the connection opening 20 is formed in a protruding connection piece 21 of the device 7. The connection piece 21 is then preferably connected to a branched connection connection 9_1 of the supply air line 9 by a flexible air duct 9_2, as shown by way of example in Figur 1shown. Thus, supply air can be supplied to the supply air duct or into the second air duct 16 through the central supply system 8, which can then be introduced into the respective room 3, 4 through the air duct 16 and the supply air opening 19.

[0026] Figur 2B shows the arrangement 6 with the device 7 from Figur 2A in a cross-sectional view along line BB from Figur 2A According to the present embodiment, the exhaust air opening 17 is arranged above the supply air opening 19 in the opening 10 of the wall 2. The ducts thus end one above the other in the wall 2 or in the associated room 3, 4.

[0027] The housing 12 forms a type of distributor or collection box for both the supply air and the exhaust air, since the exhaust air opening 17 and the supply air opening 19 preferably extend, as shown in the figures, over almost the entire width of the housing 12. Basically, the housing 12 has a width B, which extends in particular horizontally when installed as intended, a height H, which extends vertically, and a depth T, which extends horizontally and perpendicular to the height and width, as shown in the Figuren 2A , 2B and 2C marked.

[0028] The opening 10 in the wall 2 thus also has, for example, an extension which corresponds at least to the width of the air ducts 15, 16 in the area of ​​the exhaust air opening 17 and the supply air opening 19 in order to accommodate them completely, and which is narrower than the housing width B, so that the housing 12 rests against the wall 2 with the free end face of its housing wall 14, in particular in a sound-insulating or sound-damping manner, as in Figuren 2A and 2Bshown by way of example. The housing 12 has, on its inner side facing the wall 2, a sound absorption material layer 22 or sound dampening layer that extends over the housing base 13, as well as a further sound absorption material layer 23 that extends along the housing wall 14. As a result, the trough shape of the housing 12 is also substantially covered by sound absorption material. In particular, the sound absorption material layer is only interrupted in the area in which the air ducts 15, 16 lead outwards through the housing 12. Preferably, the housing 12 also has, on its end face facing the wall 2, a further sound absorption material layer 24 that extends, for example, in a ring shape around the opening 10 of the wall 2 or around the sections of the respective air duct 15, 16 that form the exhaust air opening 17 and the supply air opening 19.

[0029] With respect to the supply air duct or air duct 16, the ventilation device 7 corresponds at least essentially to a conventional ventilation device. However, the device 7 differs from known ventilation devices in that the advantageous silencer 11 is assigned to the exhaust air flow or the exhaust air duct (air duct 15).

[0030] The silencer 11 in the form of a splitter gap silencer is connected to the outlet opening 18 of the air duct 15. For this purpose, the housing 12 has a housing intermediate floor 25, which is arranged parallel to and at a distance from the housing floor 13 and extends to the housing wall 14 or at least to the sound absorption material 23 adjacent to the housing wall 14. The housing intermediate wall 25 is also arranged at a distance from the sound absorption material layer 22 on the floor 13 of the housing 12, so that an air outlet chamber 26 is formed between the housing intermediate wall 25 and the sound absorption material layer 22. The housing intermediate wall 25 is arranged so far from the sound absorption material layer 22 that the air outlet chamber 26 has a small depth compared to its width and height, thus forming an air guide gap.The sound absorption material layer 22 is made in particular of an open-pored, acoustically active material which preferably has a length-related flow resistance of more than 5 KPa s / m 2<.

[0031] In addition, the housing 12 acts as a sound insulator, preferably made of sheet steel with a sheet thickness of 1 mm or more. This provides sound insulation on the housing 12 through sound reflection from a reverberant surface.

[0032] The housing wall 14 has an air outlet 27 at the level of the air outlet chamber 26, the width of which corresponds to the depth of the air outlet chamber 26 and the height of which corresponds to the height of the air outlet chamber 26. Thus, the air outlet chamber 26 is open to one side of the housing 12, as for example in Figur 2C which is a longitudinal section through the air-conditioning system 7 along the line CC from Figur 1The cutting plane passes through the air outlet chamber 26. As shown in Figur 2A As shown, the outlet opening 18 of the air duct 15 is designed such that it opens into the housing intermediate wall 25 or into the air outlet chamber 26 through the housing intermediate wall 25.

[0033] Exhaust air emerging from the room 3 thus passes through the outlet opening 18 directly into the air outlet chamber 26. The outlet opening 18 is arranged as far as possible from the air outlet 27 in the housing 12, so that the flow path through the air outlet chamber 26 is maximized. As indicated by an arrow 28 in Figur 2AAs shown, the exhaust air flows along the sound absorption material layer 22 or between the sound absorption material layer 22 and the housing intermediate floor 25 to the lateral air outlet 27 in the housing wall 14. Thus, the silencer 11 absorbs airborne sound in particular, while the housing 12 provides sound insulation, particularly of structure-borne sound. The device 7 thus ensures both sound insulation and sound dampening.

[0034] Due to the size of the air outlet 27, flow resistance is minimal and the gap between the sound absorption material layer 22 in the housing partition wall 25 provides advantageous sound insulation.

[0035] Because the silencer 11 is advantageously integrated into the housing 12 of the device 7 and is implemented as a gap damper or baffle damper in the air outlet chamber 26, the installation space required for the silencer 11 is minimal. Since the entire width of the housing 12 is utilized, the height H of the housing 12 can be reduced, and a pipe silencer adjoining the flow path, which would require significantly more installation space, can be dispensed with.

[0036] The advantageous ventilation device 7 ensures that sufficient sound insulation is provided from the respective room 3, 4 into the corridor, particularly in the exhaust air path. The additional sound absorption material layers 23, 24 and also the sound absorption material layer 22 ensure insulation for the supply and exhaust air passages to reduce sound radiation via the walls, in particular the housing wall 14 and the housing base 13 of the housing 12. The sound absorption material layers 22, 23 and / or 24 are designed, in particular together with the housing 12, as an insulating shell, which can be mounted or is mounted on the wall 2 so as to cover the opening 10. The baffle gap damping ensures, in particular, that resonances caused by sound reflections in the baffle gap or in the silencer 11 are dampened. The housing 12 is therefore largely responsible for the sound insulation.The sound absorption material used improves the overall insulation and preferably fills the cavities of the housing that are not used for air conduction as much as possible.

[0037] In particular, the device 7 limits the flow loss of the exhaust air to 15 to 20 Pa, so that the pressure difference at a closed door of the associated room 3, 4 is not noticeable when opened, and the desired exhaust air volume flow arrives as overflow air in the corridor or room 5. Preferably, the housing 12 has a width B corresponding to the typical axial width of a building wall, for example, 1350 mm.

[0038] Because the ventilation device 7 has a comparatively small depth T due to the advantageous silencer 11, despite the integrated silencer 11, the corridor in the ceiling area can be advantageously used for laying and routing electrical, hydraulic and / or pneumatic lines.

[0039] Preferably, the housing wall 14 and the housing base 13 have a sheet thickness of 1 mm to 1.5 mm, in particular 1.25 mm, and are made of sheet steel. The same preferably also applies to the housing intermediate base 25. The respective sound absorption material layer 22, 13, 24 has a thickness of at least 30 mm, preferably at least 40 mm.

[0040] The geometry of the splitter gap or the air outlet chamber 26 preferably has an advantageous aspect ratio of small width and large height, wherein in particular a width of 20 to 40 mm and a height of 200 to 400 mm are provided in order to achieve good sound absorption on the one hand and to advantageously limit the air velocity and thus the air pressure loss on the other hand.

[0041] The advantageous design of the ventilation device 7 also ensures simple installation, since the housing 12 with the integrated silencer 11 merely needs to be placed onto a combination air outlet or the opening 10 of the wall 2 and, in particular, fastened to the wall 2 with screws. Self-tapping screws are preferably used. For this purpose, the housing 12 preferably has one or more outwardly projecting fastening flanges on the end face of the housing wall 14 facing the wall 2, through which the fastening screws can be passed. The ventilation device 7 can therefore also be manufactured and used as a retrofit solution, for example to provide more space with the same or improved sound insulation in cramped installation spaces.Tests have already shown that a sound insulation level of Rw>30 dB can be achieved by the ventilation system 7 in order to maintain the resulting, weighted sound insulation levels of 40 to 45 dB for the wall 2 separating the corridor from the office rooms.

[0042] An advantageous variant of the air-conditioning device 7 or the arrangement 6 is shown in a further embodiment in Figuren 3A und B shown. Elements known from the previous embodiment are provided with the same reference numerals, so reference is made to the above description. The following will essentially focus on the differences.

[0043] Figur 3A shows a longitudinal section according to the Figur 3B section line AA, as shown in Figur 2A was elected, and Figur 3B a cross-section as shown in Figur 2B shown, along the Figur 3A marked section line BB.

[0044] In contrast to the previous embodiment, the supply air opening 19 and the exhaust air opening 17 are not arranged one above the other, but next to each other in the opening 10 of the wall 2. However, the paths of the exhaust air and the supply air differ only slightly from each other. In particular, the exhaust air opening 17 is arranged on the side of the housing 12 facing away from the air outlet 27 in the opening 10, so that the supply air opening 19 is located between the exhaust air opening 17 and the air outlet 27, as shown in the plan view of Figur 3Ashown. The outlet opening 10 of the air duct 15 is also located on the side of the housing intermediate floor 25 facing away from the air outlet 27 in order to maximize the flow path through the air outlet chamber 26 or the sound insulation gap. As a result of this arrangement, the exhaust air opening 17 and the outlet opening 18 in particular are close to one another, whereby the flow path up to the silencer 11 is minimized and therefore has low flow resistance. In order to also optimize the flow path for the supply air duct or air duct 16, the connection piece 21 with the connection opening 20 is preferably shifted further in the direction of the air outlet 27 so that the connection opening 20 is located between the outlet opening 18 and the air outlet 27 and thus opposite the supply air opening 19.

[0045] Optionally, the ventilation device 7 also has, in the area of ​​the supply air opening 19 and the exhaust air opening 17 in the opposite section of the air ducts 15, 16 in the wall 2, a sound insulation element 29 which is made in particular of the same material as the sound absorption material layers 22, 23 and 24.

Claims

1. Ventilation device (7) for passing air through a wall (2) of a building (1), comprising at least one air duct (15), in particular an exhaust air duct, which has an exhaust air opening (17) at one end and an outlet opening (18) at the other end, wherein the air duct (15) is designed to extend completely or partially through an opening (10) in the wall (2), so that the exhaust air opening (17) is located on a first side of the wall (2), in particular facing an acoustic transmission room of the building (1), and the outlet opening (18) is located on a second side of the wall (2), in particular facing an acoustic reception room of the building (1), and comprising a silencer (11) associated with the outlet opening (18), and wherein the air duct (15) is guided through a trough-shaped housing (12) having a housing wall (14) and a housing base (13), wherein the housing wall (14) is designed toto rest against the second side of the wall (2) with an end face spaced from the housing base (13), , characterized in that the silencer (11) has an air outlet chamber (26) which has a housing intermediate wall (25) extending parallel to and at a distance from the housing base (13) as far as the housing wall (14), wherein the outlet opening (18) of the air duct (15) opens through the housing intermediate wall (25) into the air outlet chamber (26), and that in a section of the housing wall (13) in the region of the air outlet chamber (26) an air outlet (27) is formed at a distance from the outlet opening (18), and that at least one sound absorption material layer (22) is assigned to at least the air outlet chamber (26).

2. Ventilation device according to claim 1, characterized in that the outlet opening (18) is arranged at the end of the air outlet chamber (26) facing away from the section of the housing wall (13).

3. Ventilation device according to one of the preceding claims, characterized in that the sound absorption material layer (22) at least substantially covers the housing base (13) on the side opposite the housing intermediate base (25).

4. Ventilation device according to one of the preceding claims, characterized in that the housing wall (14) has a further sound absorption material layer (23) on the inside of the housing.

5. Ventilation device according to one of the preceding claims, characterized in that the housing (12) has a further sound absorption material layer (24) on its front side, which can be placed or is placed on the wall (2).

6. Ventilation device according to one of the preceding claims, characterized in that the housing (12) has a depth (T) extending from the housing base (13) to the front side, a width (B) and a height (H), wherein the width (B) is greater than the height (T).

7. Ventilation device according to one of the preceding claims, characterized in that the air outlet (27) extends in a strip-like or slit-like manner over the entire or almost the entire height (H) of the housing (12) in the housing wall (13).

8. Ventilation device according to one of the preceding claims, characterized in that in a further air duct (16) leads through the housing (12), which has an air supply opening (19) at one end and a connection opening (20) at the other end, wherein the further air duct (16) is designed to protrude through a further opening or the said opening (10) of the wall (2) in the assembled state of the device (7), so that the air supply opening (19) is on the first side of the wall (2) and the connection opening (20) is on the second side.

9. Ventilation device according to one of the preceding claims, characterized in thatthe supply air opening (19) and the exhaust air opening (17) are arranged one above the other - based on the height (H) of the housing (12).

10. Ventilation device according to one of claims 1 to 8, characterized in that the supply air opening (19) and the exhaust air opening (17) are arranged next to each other - based on the height (H) of the housing (12).

11. Ventilation device according to one of the preceding claims, characterized in that the further air duct (16) is guided in sections through the air outlet chamber (26).

12. Ventilation device according to one of the preceding claims, characterized in that the air outlet chamber (26) has a height (H) of 200 to 400 mm.

13. Ventilation device according to one of the preceding claims, characterized in that the sound absorption material layer made of an open-pore material, in particular with a flow resistance of more than 5KPa s / m 2 is manufactured.

14. Ventilation arrangement (6) in a building (1) which has at least one wall (2) between a first room (3, 4), in particular an acoustic transmission room, and a second room (5), in particular an acoustic reception room, wherein a ventilation device (2) is assigned to the wall (2) for ventilation and / or air conditioning of the first room (3, 4), characterized by the design of the device (2) according to one or more of claims 1 to 13.

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