CN103590729A - Ventilation and air change sound insulation window - Google Patents

Abstract

A ventilation and sound insulation window, which is composed of an inner sound insulation window, an outer sound insulation window, a sound absorption structure, an air outlet muffler, and an air inlet muffler. The frame of the inner sound insulation window is flush with the inner surface of the wall, and the outer sound insulation window The frame is outside the wall, the sound absorption structure is set between the upper window frame of the inner sound insulation window and the upper window frame of the outer sound insulation window, the air outlet muffler is arranged between the upper edge of the window opening and the upper window frame, and the air inlet muffler is arranged under the window opening Between the edge and the lower window frame. While having a wide silencing frequency band and high silencing capacity, the muffler has a large cross-sectional area of the effective silencing channel, slow wind speed and small wind pressure loss, and can maintain indoor air circulation under normal conditions. Under the circumstances, the per capita fresh air volume requirement can be met. Moreover, the structure is compact and the installation is convenient.

Description

Ventilation and sound insulation windows

Technical field

The invention relates to the technical field of noise control, in particular to a ventilation and sound insulation window that can effectively block the outdoor noise of a building from being transmitted to the room, and at the same time provide ventilation and ventilation. the

Background technique

At present, noise has become a major environmental pollution, and people pay more and more attention to the acoustic environment of residential buildings, especially those facing the street. Therefore, how to solve traffic noise nuisance has become a hot spot that people pay attention to. Although the sound insulation window method is a relatively passive means to solve traffic noise, the effect is more obvious. Practice has proved that in areas with serious road noise, the sound insulation window can reduce the indoor noise to below 30dB, which meets the requirements of "Acoustic Environmental Quality". Standard "GB3096-2008 requirements. the

However, the current sound insulation windows are often airtight sound insulation windows, which block the passage of air while blocking the passage of noise. People live in an environment without air circulation and exchange, which will result in reduced indoor air oxygen and poor air quality. The phenomenon. Over time, it will have an impact on people's health. Refer to "Industrial Enterprise Design Hygienic Standards" GBZ 1-2010 Chapter 6 Basic Hygienic Requirements for Workplaces 6.6.1 The fresh air in the workplace should come from the outside, the fresh air outlet should be set in the air clean area, and the fresh air volume should meet the following requirements: non-air-conditioned For workshops where the per capita volume of the workplace is less than 20m3, the per capita fresh air volume should be guaranteed to be ≥30m3/h; 30㎡3/h (0.008㎡3/s). the

If the fan is used to exhaust and supply air, it can solve the problem of indoor air circulation and exchange. However, the fan will generate additional noise, and will also generate additional energy consumption and maintenance costs for the fan. the

A labyrinth muffler is also called a chamber muffler, and several chamber mufflers are connected in series to form a labyrinth muffler. In addition to the resistive effect, this kind of muffler also has a resistive effect through the expansion and reduction of the section of the small chamber. Therefore, it is characterized by a wide frequency band of noise reduction, a high amount of noise reduction, but a large resistance loss, and is suitable for low wind speed conditions. The wind speed υ should not be ≥5m/s. the

The aerodynamic performance of the muffler is another important indicator for evaluating the muffler performance, which reflects the size of the muffler's resistance to airflow. The aerodynamic performance of the muffler is expressed by the drag coefficient or drag loss. Resistance loss, referred to as resistance loss, refers to the value that the hydrostatic pressure at the outlet of the muffler is lower than that at the inlet when the airflow passes through the muffler. the

The total pressure loss △P of the muffler, including the pressure loss △Pm along the way and the calculation of local pressure loss △Pj,

△P=△Pm+△Pj(Pa) △Pm = λ/de×υ2/2×ρ △Pj= ξυ2/2×ρ(Pa),

△P=λ/de×υ2/2×ρ+ξυ2/2×ρ=(λ/de+ξ)υ2/2×ρ

In the formula: ΔP--pressure loss, Pa;

λ--Frictional resistance coefficient;

     de--Equivalent diameter of the effective muffler channel of the muffler de=2ab/a+b

υ--wind speed (m/s)

ξ--local resistance coefficient

ρ--air density (generally 1.2kg/m3)

Obviously, the resistance loss of the muffler is directly related to the airflow velocity under the conditions of use. When the air velocity υ≤0.30m/s, the total pressure loss of the muffler ΔP≤0.054(λ/de+ξ) (Pa)

Contents of the invention

In order to overcome the influence of the existing sound insulation windows on blocking air circulation and the additional noise and energy consumption caused by setting the fan, the present invention provides a sound insulation window for ventilation and ventilation. Acoustic windows not only have high sound insulation, but also can ventilate and exchange air to ensure indoor air quality. the

In order to achieve the above object, the technical solution adopted by the present invention to solve the technical problems is:

A ventilation and sound insulation window, which is composed of an inner sound insulation window, an outer sound insulation window, a sound absorption structure, an air outlet muffler, and an air inlet muffler. The frame of the inner sound insulation window is flush with the inner surface of the wall, and the outer sound insulation window The frame is outside the wall, the sound absorption structure is set between the upper window frame of the inner sound insulation window and the upper window frame of the outer sound insulation window, the air outlet muffler is arranged between the upper edge of the window opening and the upper window frame, and the air inlet muffler is arranged under the window opening Between the edge and the lower window frame. In the cavity between the inner sound-proof window and the outer sound-proof window, a sound-absorbing structure is set to absorb the noise passing through the outer sound-proof window and improve the overall sound insulation. The inner soundproof window and the outer soundproof window are all sliding windows, and sealing strips are set between the window sash, the window frame and the guide rail. The glass of the inner soundproof window and the outer soundproof window is made of double-layer glass laminated with different thicknesses. . Double-layer laminated glass is a layer of sound-absorbing material sandwiched between two layers of glass, allowing noise to be reflected and absorbed multiple times in the composite structure to achieve the purpose of sound insulation. Its sound insulation effect is higher than that of double-layer insulating glass. At the same time, the thickness is reduced and the installation is convenient. Two-layer glass of different thickness can avoid the same matching frequency of two-layer glass of the same thickness. Both the air outlet muffler and the air inlet muffler are composed of a muffler shell, a sound-absorbing plate installed in the muffler shell, a sound-absorbing insert, an insect-proof net, and an adjustable louver. The sound-absorbing insert is composed of a steel plate and sound-absorbing plates on both sides , forming a labyrinth muffler structure. The structure of the labyrinth muffler has a wide frequency band of noise reduction and high noise reduction. The steel plate installed in the noise reduction insert can prevent the noise from passing through the sound-absorbing board and enter the room, improving the sound insulation of the muffler. The sound-absorbing panel directly faces the airflow direction to form a right-angle resistant sound-absorbing structure. The sound energy is continuously refracted in the right-angle resistant sound-absorbing structure, which will be absorbed faster and absorb non-plane waves more effectively. It can eliminate frequency characteristics and focus on low-frequency bands. noise. The part of the air outlet muffler beyond the outside of the wall is arc-shaped. The outdoor air outlet of the air outlet muffler is outside the outer sound insulation window, and the direction is downward. The insect-proof net is installed outside the outer air outlet. Flat, adjustable louvers are installed in the indoor air outlet of the air outlet muffler, and the adjustable louvers are facing upward. The outdoor air inlet of the air inlet muffler faces downward, and between the lower part of the air inlet muffler and the outer wall, the insect-proof net is installed outside the outdoor air inlet. The adjustable louver is installed in the indoor air inlet of the air inlet muffler, and the adjustable louver air outlet faces downward. According to the principle of "hot air rises and cold air descends", the air intake is low and the wind is high. It can make it easier to remove harmful exhaust gas and hot air. Effective ventilation and reasonable airflow organization are of great significance for improving indoor air quality, controlling indoor air pollutant levels, and ensuring the realization of healthy buildings. The inner sound insulation window and the outer sound insulation window can be opened at the same time to form a free ventilation state, and the adjustable louvers can also be opened or closed according to different climatic conditions. A cubic cavity is formed between the inner sound insulation window and the outer sound insulation window. The decorative panels on both sides are directly installed on the two sides of the window opening, the upper sound insulation panel is installed under the air outlet muffler, and the lower sound insulation decorative panel is installed on the air inlet muffler. The sound-absorbing structure is arranged under the upper sound-insulating board. The sound-absorbing structure is covered with porous sound-absorbing material and covered with glass cloth, and the surface is provided with a protective perforated plate. In view of the porous characteristics of the sound-absorbing material and its decorative layer, it is not easy to install the sound-absorbing material between the upper window frame of the inner sound-insulating window and the upper window frame of the outer sound-insulating window, with the direction of the decorative layer facing downward. Dust location.

The beneficial effect of the present invention is that, while having a wider noise reduction frequency band and a higher noise reduction amount, the muffler has a large cross-sectional area of the effective noise reduction channel, slow wind speed, and small wind pressure loss, and can maintain indoor noise under normal conditions. The air circulation can meet the per capita fresh air volume requirements under the normal household population. Moreover, the structure is compact and the installation is convenient. the

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments. the

Fig. 1 is a side sectional structural view of an embodiment of a ventilation and sound insulation window. the

FIG. 2 is a partial structural diagram of FIG. 1 . the

Fig. 3 is a front structural view of an embodiment of the ventilation and sound insulation window. the

FIG. 4 is a top structural view of FIG. 3 . the

FIG. 5 is a rear structural view of FIG. 3 . the

In the figure 1. Inner sound insulation window, 2. External sound insulation window, 3. Sound absorption structure, 4. Air outlet muffler, 5. Air inlet muffler, 6. Window frame, 7. Inside wall, 8. Outside wall, 9 .window hole, 10. window sash, 11. guide rail, 12. sealing strip, 13. double-layer laminated glass, 14. shell, 15. sound-absorbing panel, 16. sound-absorbing insert, 17. insect-proof net, 18. can Adjusting louvers, 19. Steel plate, 20. Arc shape, 21. Air outlet, 22. Air inlet, 23. Decorative board, 24. Upper sound insulation board, 25. Lower sound insulation decorative board, 26. Porous sound-absorbing material, 27. glass silk cloth, 28. face shield perforated board. the

Detailed ways

In the embodiment shown in Figures 1, 2, 3, 4, and 5, a ventilation and sound insulation window consists of an inner sound insulation window (1), an outer sound insulation window (2), and a sound absorption structure (3) , the air outlet muffler (4), and the air inlet muffler (5), the window frame (6) of the inner sound insulation window (1) is flush with the inner surface of the wall (7), and the outer sound insulation window (2) window frame (6) Outside the wall (8), the sound-absorbing structure (3) is arranged between the upper window frame (6) of the inner sound-proof window (1) and the upper window frame (6) of the outer sound-proof window (2), and the air outlet muffler ( 4) It is arranged between the upper edge of the window hole (9) and the upper window frame (6), and the air inlet muffler (5) is arranged between the lower edge of the window hole (9) and the lower window frame (6). The inner soundproof window (1) and the outer soundproof window (2) are sliding windows, and the sealing strip (12) is arranged between the sash (10) and the window frame (6) and the guide rail (11), and the inner soundproof window ( 1), the glass of the external sound insulation window (2) is made of double-layer laminated glass (13) of different thickness. The air outlet muffler (4) and the air inlet muffler (5) are all composed of a muffler shell (14), a sound-absorbing panel (15) installed in the muffler shell (14), a muffler insert (16), an insect net ( 17), adjustable louvers (18), the sound-absorbing inserts (16) are composed of steel plates (18) and sound-absorbing plates (15) on both sides, forming a labyrinth muffler structure. The part of the air outlet muffler (4) beyond the outside of the wall (8) is in the shape of an arc (20), and the outdoor air outlet (21) of the air outlet muffler (4) is outside the outer sound insulation window (2), and the direction is downward, and the insect net ( 17) Installed outside the outer air outlet (21), the upper part of the air outlet muffler (4) indoor air outlet (21) is flush with the inner surface of the wall (7), and the adjustable louver (18) is installed on the outlet In the indoor air outlet (21) of the wind muffler (4). The direction of the outdoor air inlet (22) of the air inlet muffler (5) is downward, between the lower part of the air inlet muffler (5) and the outside of the wall (8), the insect-proof net (17) is installed outside the outdoor air inlet (22), and the air inlet The muffler (5) indoor air inlet (22) is flush with the inner wall surface (7) at the bottom of the inner sound insulation window (1), and the adjustable louver (18) is installed in the air inlet muffler (5) indoor air inlet (22). A cubic cavity is formed between the inner sound insulation window (1) and the outer sound insulation window (2), the decorative panels (23) on both sides are directly installed on the two sides of the window opening (9), and the upper sound insulation panel (24) is installed on the air outlet Under the muffler (4), the lower sound insulation decorative plate (25) is installed on the air inlet muffler (5), and the sound absorption structure (3) is arranged under the upper sound insulation plate (24), and the sound absorption structure (3) is composed of porous absorption The acoustic material (26) is covered with glass cloth (27), and the surface is provided with a protective perforated plate (28). the

It should be understood that various combinations and changes can be made to the above-mentioned embodiments without departing from the scope of the present invention. the

Claims (7)

1. a ventilation sound proof window, by interior sound proof window, outer sound proof window, sound absorption construction, air outlet silencing device, air-inlet sound eliminator, formed, it is characterized in that: interior sound proof window window frame is with face is concordant within the walls, outer sound proof window window frame is in wall outside, sound absorption construction is arranged between interior sound proof window upper window frame, outer sound proof window upper window frame, air outlet silencing device is arranged between window opening upper limb and upper window frame, air-inlet sound eliminator be arranged on window opening lower edge and lower window frame and between.

2. ventilation sound proof window according to claim 1, it is characterized in that: interior sound proof window, outer sound proof window are sliding sash, weather strip is all set between sash and window frame, guide rail, and the glass of interior sound proof window, outer sound proof window is made by the double-layer glass doubling of different-thickness.

3. ventilation sound proof window according to claim 1, it is characterized in that: air outlet silencing device, air-inlet sound eliminator form by suppressor case, the acoustical board, noise elimination inserted sheet, fly net, the adjustable blinds that are arranged in suppressor case, noise elimination inserted sheet is comprised of the acoustical board on steel plate and two limits, forms labyrinth silencer structure.

4. ventilation sound proof window according to claim 1, it is characterized in that: it is circular arc moulding that air outlet silencing device exceeds wall exterior portion, the outdoor air outlet of air outlet silencing device is outside outside sound proof window, direction down, fly net is arranged on outer air outlet outside, the indoor air outlet of air outlet silencing device is on interior sound proof window top with face is concordant within the walls, and adjustable blinds is arranged in the indoor air outlet of air outlet silencing device, and adjustable air grille upward.

5. ventilation sound proof window according to claim 1, it is characterized in that: the outdoor air intake direction of air-inlet sound eliminator down, between air-inlet sound eliminator bottom and wall outside, fly net is arranged on outdoor air intake outside, air-inlet sound eliminator indoor air inlet is concordant with interior wall in interior sound proof window bottom, adjustable blinds is arranged in air-inlet sound eliminator indoor air inlet, and adjustable air grille down.

6. according to the ventilation sound proof window described in claim 4,5, it is characterized in that: interior sound proof window, outer sound proof window can be opened simultaneously, be formed free ventilation state, also can open or close adjustable blinds according to different weather conditions.

7. ventilation sound proof window according to claim 1, it is characterized in that: between interior sound proof window, outer sound proof window, form cube cavity, two side decorative panels are directly installed on window opening two limits, upper sound barrier is arranged under air outlet silencing device, lower sound insulation decorative panel is arranged on air-inlet sound eliminator, sound absorption construction is arranged on below sound barrier, and sound absorption construction is by the outer cover glass silk cloth of porous absorption material, and surface is provided with mask perforated plate.

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