DE102021000988A1 - Soundproofing attachment and soundproofing arrangement - Google Patents

Abstract

The invention relates to a soundproofing attachment, having a frame body, a pane element and an air duct unit, the frame body having an upper frame part, a lower frame part and two lateral frame parts which together form a box-shaped basic shape, the frame body having a structural contact plane which is designed in an assembled state, to provide a sound-insulating contact with an outer building structure surface which surrounds a window opening, the frame body having a peripheral pane border which provides a sealing connection to the pane element and keeps it at a distance from a plan plane of the structural contact plane, the frame body and the pane element each have an inside and an outside, form a soundproofed space on the inside together with the building structure and separate the space from an outside space, the air guide unit, a supply air duct and an exhaust air duct, wherein the supply air duct connects the outside space with the intermediate space in an air-conducting manner and has an intake air inlet facing the outside space and an intake air outlet facing the intermediate space, wherein the one exhaust air duct connects the intermediate space to the outside space and has an exhaust air inlet facing the intermediate space and has an exhaust air outlet facing the outside space.

Description

The invention relates to a soundproofing attachment for windows and a soundproofing arrangement.

Various technical solutions for measures to subsequently improve the soundproofing of windows in existing buildings are known from the prior art. Noise protection measures are of particular practical importance when buildings are located in areas exposed to noise, such as on busy roads.

As a solution, it is known, for example, to replace the glazing of the windows with soundproof glazing. In addition to the high cost of materials, the disadvantage here is that the window frames can still have insufficient damping of the sound transmission. In addition, with a turn or tilt opening for ventilation purposes, the sound insulation of the window is largely disabled.

Furthermore, it is known to provide separate ventilation systems to maintain soundproofing. The disadvantage here is that they interfere either with the structural structure of the building, for example in the form of bores for ventilation ducts, or with window integration, for example with the window frame, the seal or the glazing surface. In some cases, such solutions can only be implemented if the windows are completely replaced.

Furthermore, it is known according to the state of the art to provide a building wall or several building walls with a sound insulation facade. Disadvantages here are the considerable costs and the limited technical or building law feasibility.

The object of the invention is to provide a solution for improving the soundproofing of windows in buildings that can be easily retrofitted, does not require any intervention in the building structure, at the same time enables noise-reduced ventilation, provides additional protection against burglary and the possibility of an architecturally attractive design.

The object is achieved by the features listed in claim 1. Preferred developments result from the dependent claims.

The soundproofing attachment has a frame body, a pane element and an air duct unit.

The frame body according to the invention has an upper frame part, a lower frame part and two side frame parts, the frame parts forming a box-shaped basic shape.

In addition, the frame body has a bearing surface on the structure side and is designed, in an assembled state, to provide a sound-insulating bearing on an outer surface of the building structure, which surrounds a window opening.

For this purpose, the contact plane is preferably designed to be essentially plane, so that it corresponds to a regularly plane wall surface in the surrounding zone around a window opening. It is preferably a contact surface that is provided with a compriband or other sealing material, for example, and that rests sealingly against the surface of the house wall when the soundproofing attachment is in an assembled state.

The connection to the building structure is preferably made using commercially available fastening elements such as screws, adhesive or heavy-duty anchors, depending on the size of the soundproofing attachment.

Furthermore, the frame body has a peripheral pane border, the pane border providing a sealed connection to the pane element.

The pane element is held by the frame body by means of the pane surround and is spaced apart from a plan plane of the structural contact plane. The pane element in the soundproofing attachment is preferably designed in such a way that, due to its structure, it provides good soundproofing properties with a high level of transparency at the same time. A composite of several panes placed one on top of the other and glued together is also possible. In particular, it can be toughened safety glass (ESG) or laminated safety glass (VSG).

Furthermore, various additional options such as privacy protection, mirroring or radiation filters, especially to reduce the transmission of thermal radiation, can be integrated for special applications.

The disc element is firmly connected to the frame body and closed. It can optionally be provided with an emergency opening option. This ensures permanent function, in particular permanent soundproofing, but also gives the option of escaping, for example in the event of a fire. In the normal operating state, the pane remains closed.

The frame body and the pane element each have an inside and an outside. On the inside, together with the building structure, they form a soundproofed space and at the same time separate the space from an outside space.

The existing window and the outer wall in the area surrounding the window opening are understood as building structure in this sense. The window opening remains closed by the existing window even when a sound insulation attachment according to the invention is installed as intended. This usually offers the possibility for a tilt position or complete opening of the movable window sash. Both a tilted position and a complete opening are collectively referred to below as an open window. As a result, the interior of the building is connected to the intermediate space in an air-conducting manner and air can be exchanged between the interior and the intermediate space. The interior can be closed off aesthetically and creatively through the window in the usual way and opened in a controlled manner. However, the soundproofing attachment provides an additional separation from the emission-loaded outdoor area.

The air guidance unit has an air supply duct and an air exhaust duct, which control an exchange of air between the intermediate space and the outside space. The outdoor space is understood to be the surrounding space outside of the building. Supply air duct and exhaust air duct are also collectively referred to as the air ducts.

The supply air duct is preferably arranged in the lower frame part. It has a supply air inlet facing the outside space and a supply air outlet facing the intermediate space. The supply air duct connects the outside space with the space in between.

In addition, the air guidance unit has an exhaust air duct, which has an exhaust air inlet facing the intermediate space and an exhaust air outlet facing the external space, which connects the intermediate space to the external space. The drainage channel is preferably arranged in the upper frame part.

The interaction of the two air ducts enables an air exchange function as described below.

The supply air duct directs the outside air as supply air behind the fixed pane element into the intermediate space. The supply air is also referred to below as fresh air. The fresh air can then enter the interior from the space through the open window. If the fresh air has flowed through the interior and has become stale air, it can get back into the cavity of the sound insulation attachment through the open window. From there, the exhaust air is released to the outside through the exhaust air duct past the fixed pane element. The exchange of air between the interior and the space takes place by natural convection. Furthermore, the exchange of air between the intermediate space and the outside space can take place both by natural convection and optionally by forced convection by means of a fan. The exchange of air for a pleasant and productive room climate is provided in this way.

In an advantageous variant, the supply air duct and the exhaust air duct can be coupled by means of a heat exchanger, so that the heat from the exhaust air can be used to increase the temperature of the supply air. Other forms of heat recovery are also possible, for example by integrating storage mass bodies into the air ducts, which the supply air or exhaust air flows around or through and can absorb or emit heat, and the air flow in the air ducts is fan-driven, alternating in the opposite direction of flow. When the outside temperatures are hot, it is also possible to lower the temperature of the outside air.

The soundproofing attachment according to the invention has in particular the special advantages described below.

An exchange of air is provided, while at the same time the penetration of noise into the interior, which is present without a soundproofing attachment, is avoided or significantly reduced. A sound reduction index of 32 dB in the intermediate space compared to the outside space was verified.

Furthermore, the intuitive use is advantageous, since the air exchange is only achieved through the usual window opening. In addition, there is a very low susceptibility to misuse.

In addition, with a closed window, the soundproofing in the interior is advantageously additionally improved. This is particularly advantageous in the case of those existing windows that only provide a comparatively low degree of soundproofing.

There is also the advantage that the dust entry during ventilation can be significantly reduced.

In addition, if the air ducts are designed appropriately, insects can be protection is provided and so the comfort in the interior can be improved.

Another advantage is the increase in burglary protection. In particular, it is possible to leave the existing window open even when you are absent or at night without hesitation, thus providing permanent ventilation.

A next advantage is the provision of fall protection even with an open window. This can be particularly advantageous in kindergartens, schools, hospitals or public buildings. In addition, the area below the existing window is protected from falling objects.

Furthermore, additional weather protection is provided by the soundproofing attachment according to the invention. On the one hand, it is possible to leave the existing window open even in strong winds and rain. On the other hand, undesirable drafts are reduced when airing.

In addition, the air exchange performance can advantageously be adjusted as required by structurally simple means.

At the same time, a thermal buffer zone is created in the space, which, depending on weather factors such as solar radiation in particular, can make it possible to preheat the supply air in the space and thus reduce heating costs.

Furthermore, the buffer zone improves the thermal insulation in the window area even when the existing window is closed.

The soundproofing attachment can advantageously also serve as an architectural design element. The frame body can advantageously be implemented in different depths and adapted to the possible on-site gradations of thermal insulation composite systems or front facades. This makes it possible to fit the sound insulation attachment into the overall picture of the building. However, a stand-alone top mounting as a visually accentuated design element is also possible. Likewise, other decorative elements such as cornices and the like can be arranged on the frame body or molded into it. In these variants, the sound insulation attachment can be attached to modern and new buildings as well as to old, partially listed existing buildings.

In particular, the soundproofing attachment according to the invention provides the particular advantage that all the positive aspects described above are achieved without having to intervene in the building structure.

In addition, installation is possible without temporarily impairing the use of the building, as would be the case, for example, when replacing windows.

In a first advantageous development of the soundproofing attachment according to the preceding claim, at least one of the air ducts has a sound-absorbing inner surface.

In addition to the air flow, the air ducts can also penetrate airborne noise into the space and introduce external noise into the interior.

In order to optionally additionally increase the effectiveness of the soundproofing attachment, according to this development, as a further measure, both air ducts are preferably equipped with means for improved soundproofing. For example, the air duct surface can be made of a material with large pores or be lined with such a material or foam. Furthermore, it is alternatively or cumulatively possible for the air ducts to have a meandering geometry. This increases the absorption of the sound energy and greatly attenuates the sound level entering the cavity and further into the interior.

Optionally, the inside of the frame body can also have a sound-absorbing surface design, either entirely or in sections, in order to achieve a further reduction in noise.

According to another advantageous development of the soundproofing attachment according to one of the preceding claims, a particle filter is assigned to the supply air duct.

If an outdoor area is subject to high noise emissions, these are often caused by vehicle traffic. This is also accompanied by the emission of further emissions. These emissions can be fine dust or chemical gases that can be harmful to health.

However, regardless of the noise level, there can also be fine dust pollution in the air outdoors, for example from industrial plants or stoves.

In order to make the exchange of air with the interior more health-promoting, according to this development a particle filter in the supply air duct makes it possible to filter out harmful particles and gases. For this purpose, the soundproofing attachment can be equipped with various filters, such as fine dust or activated carbon filters.

In this advantageous further development, a blower is preferably also provided in order to achieve sufficient air throughput through the particle filter and to overcome its flow resistance.

In another advantageous development of the soundproofing attachment according to one of the preceding claims, this has a control and evaluation unit and a fan. The control and evaluation unit is designed to provide a control command to the fan. The control and evaluation unit is, for example, an electronic circuit that preferably has a microcontroller.

To further increase the air exchange quality, the air exchange can be actively automated using a control and evaluation unit that evaluates input data and interacts with the blower. As a result, it is advantageously possible to adapt the air exchange to ambient conditions and optionally also to user specifications. The control command to the blower controls the operating state of the blower, with the blower being able to be switched on or off in particular, but also in terms of power for controlling the mass flow of the incoming or outgoing air.

The input data can in particular also be the detection of an opening status of the inventory window. A simple switching contact or reed switch can thus detect that the inventory window is closed, so that the blower can be switched off by the control and evaluation unit in order to avoid useless wear and tear on the blower and filter. In this case, the design of the control and evaluation unit can be limited to a simple circuit.

According to a further development based on this, the soundproofing attachment has an air quality sensor, which is designed to provide and transmit air quality data to the control and evaluation unit. The control and evaluation unit is designed to evaluate air quality data and to provide a control command to the blower.

The air quality sensor can be assigned both to the outside space and to the space in between, or it can also be installed in a protected manner in an air duct. In special applications, the air quality sensor can also be assigned to the interior. Furthermore, the air quality sensor can consist of several parts, consisting of several partial sensors in different rooms and designed for different air properties.

The air quality sensor is data-connected to a control and evaluation unit. It provides data on the properties of the air, also referred to below as air quality data. The air quality data is transmitted to the control and evaluation unit and evaluated there. A control command for controlling the operating state of the blower is generated as a function of the evaluation.

The air quality sensor records properties of the air, which can be the following in particular: temperature, air humidity, CO content or CO2 content, particle density and more.

In particular, a CO2 sensor can be arranged in the intermediate space. Since the interior is in an exchange of air with the space when the window is open, the CO2 value can serve as a general reference value for the air quality in the interior. For example, if a certain adjustable CO2 value is exceeded, the control and evaluation unit switches on the blower or increases its output. As a special advantage, this enables automatic tracking of the indoor air quality depending on the intensity of use. This is particularly advantageous in classrooms or conference rooms. When a room is occupied, the air exchange is automatically increased and automatically reduced when it is not occupied. In this way, heating energy can be saved at the same time.

In addition, several expansion stages are possible. In a further expansion stage, the control and evaluation unit can transmit the measured data to a display, a database, a home automation system or a smartphone. In this way, values such as temperature, humidity, CO content, particle density, etc. in the supply and exhaust air can be determined, recorded and displayed. This allows the ventilation behavior to be controlled by the user and the effectiveness to be recorded. For example, ventilation can be increased at times of low emissions, which reduces the necessary treatment measures for the supply air and delivers the desired indoor air quality in an energy- and resource-saving manner. But also an automated control of a blower or window opener can be realized. In this way, the air exchange process can be initiated automatically when the outside air quality is good or the inside air quality is poor. In this way, the room climate can be controlled independently of the presence or operating decision of a user.

According to a special variant, the air quality sensor is designed as a temperature sensor.

As a result, the air exchange performance can be controlled depending on the temperature, for example to reduce energy losses at particularly low outside temperatures.

In another variant, a night-time cooling function in summer can also be provided as a special performance feature to remove unwanted heat. For this purpose, the temperature is recorded both outside and in the space between. If the outside temperature falls below the inside temperature, the control and evaluation unit can switch on the fan or increase its output when the night-time cooling function is activated. This makes it possible to dissipate heat from the storage masses of the building at night and thus reduce the room temperatures even during the day when outside temperatures are high by absorbing heat through the storage masses of the building. This can advantageously make air conditioning unnecessary or reduce the energy requirement for air conditioning.

In another advantageous development of the soundproofing attachment according to one of the preceding claims, at least one of the air ducts is formed by a frame structure of the respective frame part. For a high level of integrity and the associated compact and elegant design, the air ducts are formed directly through the frame of the soundproofing attachment. The element with the high functional integrity can be provided at low cost. In addition, a compact unit designed in this way can also be easily transported and installed, which significantly reduces the effort involved in installation.

In another advantageous development of the soundproofing attachment according to one of the preceding claims, at least one of the air ducts has an inspection access that is accessible from the intermediate space. In the frame element, there are inspection accesses at the appropriate points, which allow access if necessary.

Due to the possibility of filtering particles and gases, but also due to possible deposits of other substances or for a possible replacement of a fan, it is advantageous to be able to easily reach the ventilation ducts and the concealed filters and fans. A recurring check and an exchange of wearing elements are therefore possible without any problems. As a result, a long service life of the soundproofing attachment according to the invention can be achieved with low maintenance costs at the same time.

According to a further aspect of the invention, there is a soundproofing attachment arrangement which has a plurality of soundproofing attachments.

The soundproofing attachments preferably work together in an advantageous manner during the exchange of air. Here, by controlling the blower, the supply air volume flow is increased in one or more soundproofing attachments relative to the supply air volume flow in one or more further soundproofing attachments. As a result, cross-ventilation is advantageously generated, which enables a particularly effective exchange of air in the interior. Living or working rooms are preferably subjected to an increased supply air volume flow and, in particular, sanitary rooms are adjusted for an increased proportion of exhaust air. According to the soundproofing attachment arrangement, it is also possible to design the soundproofing attachments for the rooms with a higher proportion of exhaust air with an exhaust air fan in the exhaust air duct. Preferably, the soundproofing attachments of such a soundproofing arrangement each have a control and evaluation unit that is data-linked and communicates with one another. In this way, the supply air and exhaust air volume flows of the individual soundproofing attachments can be coordinated.

• 1 Schrägbild-Schnittdarstellung des Schallschutzvorsatzes
• 2 Schrägbild-Schnittdarstellung der Außenansicht des Schallschutzvorsatzes
• 3 Außenansicht als Schrägbilddarstellung des Schallschutzvorsatzes

näher erläutert.The invention is an exemplary embodiment based on

• 1 Oblique sectional view of the sound insulation attachment
• 2 Oblique sectional view of the exterior of the soundproofing attachment
• 3 External view as an oblique representation of the soundproofing attachment

explained in more detail.

In this case, the same reference symbols in the various figures refer to the same features or components in each case. The reference symbols are also used in the description if they are not shown in the relevant figure.

the 1 shows an embodiment in a vertically partially sectioned oblique representation of the soundproofing attachment in a properly installed arrangement on the building structure.

The soundproofing attachment is attached to the building structure surface 7 . This spans the window opening 8 completely. The frame body 1, comprising the upper frame part 4, the lower frame part 5 and the side frame parts 6, is assembled in such a way that it completely encompasses the window opening 8 and seals it off from the building structure surface 7. For this purpose, the frame body 1 is screwed to the building structure surface 7 with fasteners.

The frame parts 4, 5, 6 have a peripheral pane border 9 in which the pane element 2 is accommodated. This results in a soundproof and airtight attachment in front of the window opening 8 apart from the air duct unit 3 , which separates the outer space 10 from the intermediate space and at the same time indirectly from the inner space 11 . The upper 4 and the lower frame part 5 are also designed to accommodate an air duct unit 3 . At the same time, the lower frame part 5 forms the supply air duct 12 . The upper frame part 6 contains the exhaust air duct 15. To generate an air flow for better ventilation, a fan 21 is accommodated in each of the two air ducts 12, 15 in this exemplary embodiment. An inspection access 22 is provided in the upper 4 and lower frame part 5 to facilitate maintenance of the air duct unit 3 and the built-in elements.

the 2 shows the individual integrated elements in an oblique view as a section through the sound insulation attachment in its plane.

The frame body 1 consists of the upper 4, the lower 5 and the lateral frame parts 6. These are soundproof and airtightly connected to one another and attached to the building structure surface 7. They span a window opening 8 of a building. The upper 4 and the lower frame part 5 are each designed in such a way that the air duct unit 3 is integrated.

In the lower frame part 5, a supply air duct 12 is preferably housed. The fresh air or supply air is sucked in from the outside space 23 through the supply air inlet 13 and conducted into the supply air duct 12 . The natural circulation of air from the outside 10 to the inside 11 is supported by a built-in fan 21. A particle filter 18 is also provided for air purification. This cleans the fresh air. In the supply air duct, the fresh air continues to flow over an optional additional air quality sensor 19.1. This determines the fresh air quality and forwards the measured values to an integrated control and evaluation unit 20 . This has a microcomputer and, depending on the programmed algorithm, triggers further actions and in particular controls the blower 21. The sucked in and processed fresh air leaves the supply air duct 12 via the supply air outlet 14 into the intermediate space 24 of the soundproofing attachment.

With the window open, the fresh air can now flow through the interior space 25 located on the inside 11 through the window opening 8 . The used air is conveyed back into the intermediate space 24 as exhaust air from the interior on the inside 11 by the air circulation via the window opening 8 .

There it is sucked into the exhaust air duct 15 in the upper frame element 4 via the exhaust air inlet 16 . In this exemplary embodiment, a blower 21 and an insect screen 18.1 and the air quality sensor 19 are also accommodated in the exhaust air duct 15 in order to analyze the exhaust air. The air quality in the interior 25 can be derived from the exhaust air, so that the control and evaluation unit 20 , which is data-connected to the air quality sensor 19 , can use this to calculate adjustment commands for controlling the fan 21 . The exhaust air then leaves the exhaust air duct 15 via the exhaust air outlet 17 to the outside 10 into the outside space 23.

The frame parts 4, 5 have an inspection access 22 for the maintenance of the elements that are accommodated in the supply air or exhaust air duct 12, 15.

the 3 shows the sound insulation attachment from the outside 10 as seen from the outside 23 in an oblique representation.

The building structure surface 7 can be seen with a window opening 8 to which the frame body 1 is attached. This consists of the upper 4, the lower 5 and the side frame parts 6. These are tightly joined together to form the frame body 1 and overlap the window opening 8. The frame parts 4, 5, 6 together have the pane frame 9, into which the pane element 2 is inserted . This allows the incidence of light and, as a view through the sound insulation attachment, a visual connection between the interior 25 and the exterior 23 and seals the intermediate space 24 from the exterior 23 .

Reference List

1

frame body

2

disk element

3

air guide unit

4

upper frame part

5

lower frame part

6

side frame part

7

structure surface

8th

window opening

9

window bezel

10

outside

11

inside

12

supply air duct

13

supply air intake

14

supply air outlet

15

exhaust duct

16

exhaust air intake

17

exhaust outlet

18

particle filter

18.1

insect screen

19

air quality sensor

19.1

another air quality sensor

20

Control and evaluation unit

21

fan

22

audit access

23

outdoor space

24

space

25

inner space

Claims (9)

sound insulation attachment, having a frame body (1), a pane element (2) and an air duct unit (2), wherein the frame body (1) has an upper frame part (4), a lower frame part (5) and two side frame parts (6), the frame parts (4, 5, 6) forming a box-shaped basic shape, wherein the frame body (1) has a building-side contact level which is designed to provide, in an assembled state, a sound-insulating contact with an outer building structure surface (7) which surrounds a window opening (8), wherein the frame body (1) has a peripheral pane surround (9), the pane surround (9) providing a sealing connection to the pane element (2), wherein the pane element (2) is held by the frame body (1) by means of the pane surround (9) and the pane element (2) is spaced apart from a planar plane of the structural contact plane, wherein the frame body (1) and the pane element (2) each have an inner side (11) and an outer side (10), on the inner side (11) together with the building structure form a soundproof intermediate space (24) and the intermediate space is separated from an outer space (23 ) separate, wherein the air guidance unit (3) has an air supply duct (12) and an air exhaust duct (15), wherein the supply air duct (12) connects the outer space with the intermediate space in an air-conducting manner and has a supply air inlet (13) facing the outer space and a supply air outlet (14) facing the intermediate space, wherein the one exhaust air duct (15) connects the intermediate space with the outer space and one the intermediate space (24) facing the exhaust air inlet (16) and the exterior (23) facing the exhaust air outlet (17). Soundproofing intent claim 1 , characterized in that at least one of the air ducts (12, 15) has a sound-absorbing inner surface. Soundproofing attachment according to one of the preceding claims, characterized in that a particle filter (18) is assigned to the supply air duct (12). Soundproofing attachment according to one of the preceding claims, characterized in that the soundproofing attachment has a control and evaluation unit (20) and a fan (21), - and that the control and evaluation unit (20) for evaluating data and for providing a control command the fan (21) is formed. Soundproofing intent claim 4 , characterized in that the soundproofing attachment has an air quality sensor (19), - that the air quality sensor (19) is designed to provide and transmit air quality data to the control and evaluation unit (20) - and that the control and evaluation unit (20) for Evaluation of air quality data is formed. Soundproofing intent claim 4 , characterized in that the air quality sensor (19) is designed as a temperature sensor, Soundproofing attachment according to one of the preceding claims, characterized in that at least one of the air ducts (12, 15) is formed by a frame structure of the respective frame part (4, 5). Soundproofing attachment according to one of the preceding claims, characterized in that at least one of the air ducts has an inspection access (22) accessible from the intermediate space. Soundproofing arrangement, comprising a plurality of soundproofing intentions according to one of Claims 1 until 8th are trained.

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