What kind of soundproof windows should be installed in your home for aircraft noise?

This problem colleagues have consulted the people in the glass factory, and if the three-layer glass has the same thickness, it is easy to resonate, so it is better to laminate glass. And laminated glass can control low-frequency noise. High-frequency noise attenuates faster over long distances, so the aircraft we hear is often muffled, and multi-layer insulating glass is not effective for low-frequency noise.

It is recommended to choose a window with three layers of laminated glass, and if it is not enough, the window can be installed with two layers. However, the sealing of the window itself and the leakage of other parts of the room should also be considered. Installing a better sealing strip on a window is much more than what kind of tube like N-layer glass.

The five-layer glass can't reach a small hole in the sealing strip part. <>

Aircraft noise, airport noise, the most important thing is the sound of aircraft engines, the noise emitted by general power equipment is low-frequency noise, the wavelength of sound waves is very long, the distance through the air is very far, the sound energy is huge, and ordinary doors and windows, insulating glass windows, it is difficult to effectively insulate this kind of noise, just like the residents on both sides of the main road, endure the noise of car engines all day long, to solve this kind of noise trouble, it is necessary to install professional soundproof windows, soundproof glass can really effectively solve. Through independent research and development of high sealing performance of soundproof window frame profiles, sealing accessories, and then choose to match professional soundproof glass, high damping laminated glass, to achieve more perfect sound insulation performance, Kangchuang soundproof window sound insulation volume of 35-50 decibels, generally after the installation of soundproof windows, the indoor sound environment can reach the highest national sound environment standard - class 0 standard [daytime, night "40 decibels]. <

The window is composed of profiles, glass, adhesive strips, and steel linings. Profiles: window profiles can be roughly divided into two types of profiles: broken bridge aluminum and plastic steel, but because broken bridge aluminum always belongs to metal windows, based on sound conductivity and thermal conductivity, it is far less effective than plastic steel windows.

Some data show that the thermal conductivity of plastic steel is 1 1250 of aluminum alloy, and the plastic steel installed in the same room is about 5 degrees Celsius higher than aluminum alloy in winter and 5 degrees Celsius lower in summer, and the energy saving is obvious. Plastic steel is also insulated, and lightning protection should also be considered.

Of course, now the plastic steel window market is also mixed, ranging from two or three hundred yuan to one thousand five hundred yuan, the main profile of ordinary plastic steel is calcium carbonate, which is prone to cracking and brittleness after more than 1-2 years; The main material of high-grade plastic steel is pure ethylene, which is strong and has strong load-bearing capacity (because the soundproof window also needs at least two layers of glass, which is heavier). Secondly, plastic steel is mostly three-cavity, four-cavity, or even five-cavity, and the sound insulation performance is as high as 35 decibels, while the aluminum alloy with a single-cavity structure cannot be compared. In addition, high-grade plastic steel has been used in Europe for decades, although the durability of aluminum alloy itself is good, but the screws and guide rail materials are non-aluminum composite metals, which have been proved to be electrolytic corrosion, resulting in inflexible push-pull opening.

Soundproof glass: single glass is not considered for the time being, and soundproof windows should be at least double glass (or even triple glass). The industrial soundproof windows are mostly laminated glass, and the laminated film is subdivided into laminated water and laminated film.

Laminated adhesive is characterized by unevenness, instability, and relatively cheap; Laminated film is mostly PVB and EVA film, and the effect is relatively good. The composite glass with good sound insulation effect on the market, such as 5+, is glass thickness + glass thickness + aluminum strip thickness + glass thickness. Glass is also tempered glass, or low e glass, which has anti-ultraviolet rays, anti-hitting, and good thermal insulation effect.

Sealing strips: Professional soundproof windows mostly use anti-aging, good elasticity of automotive grade EPDM rubber strips, compared with ordinary rubber strips, life and sealing are better than ordinary rubber strips. <>

The installation of ultra-low frequency Beier silent soundproof window can reduce the noise by 40 decibels, which can isolate the noise but not the vibration sound.

The following will introduce you to several Bel silent soundproof windows on the market, so that you can better understand Bel Silent soundproof windows and beware of deception by merchants. Now the following is an introduction to several soundproof glasses on the market, I hope it will help you choose soundproof windows.

1 For the insulating glass with a "very good" sound insulation effect recommended by the business, the air layer between the two layers of insulating glass is very important, if the distance of the air layer is less than 2 cm, the sound insulation effect is not ideal, and the air layer of the insulating glass on the market is basically about 9 mm or centimeter, and the sound insulation effect is not as miraculous as the merchant said. And, many businesses think that if the two-layer glass can not be soundproofed, it is recommended that consumers install three-layer glass, "this practice is extremely wrong", if the business grasps the structure of the three-layer glass wrongly, the more layers of glass are used, the smaller the air layer between the glass, the worse the sound insulation effect, the sound insulation effect of the three-layer glass may not even be as good as the double-layer glass, especially for the low-frequency noise generated by cars, trains, airplanes, etc.

2 Some businesses think that vacuum can isolate sound transmission, so they advertise that vacuum glass has excellent sound insulation effect, which is just a "trap" in the language of merchants, although vacuum can prevent sound transmission, but according to our testing, vacuum glass in order to ensure the vacuum layer, between the glass added invisible solid support support to form solid sound transmission, the sound insulation effect has not been significantly improved. It is understood that the cost of vacuum glass is very high, and the price per square meter can reach 1200-1400 yuan, but it cannot achieve the ideal effect of consumers.

3. Double-layer laminated glass The product adopts a double-layer or multi-layer structure, and through high-tech means, the transparent polymer with sound insulation, sound absorption and heat insulation functions independently developed and produced by the independent research and development is sandwiched in the middle of the glass to form a composite sound insulation, sound absorption and heat insulation product, with a sound insulation volume of up to 42 decibels, which is the latest data of sound insulation. If the window profile is well equipped and the window seam is sealed, the double-layer laminated glass can often achieve a better sound insulation effect. This approach is technologically advanced and feasible in practice.

Therefore, double-layer laminated glass has been generally accepted.

It can be governed, and the effect of our company's governance in the capital Sakura Garden Community is very good. Our governance solutions and inspection data are sent to you for a look. If necessary, you can go to our customers' homes to experience the results.

A case of aircraft noise control in Sakura Garden Community.

Sakura Garden Community is located in Shunyi District, south of the third terminal of the Capital Airport, where planes frequently land over the community, resulting in strong noise, and residents of the community have been deeply affected by noise for a long time, and their physical and mental health has been greatly affected. The highest noise is measured through detection, the spectrum from low frequency to high frequency is more than 74db, and the indoor sound environment with closed windows is greater than 50db, which is very difficult to control.

Detection data. Frequency Hz 63 125 250 500 1000 2000 4000 A weighting.

1MDB outside the window

Outside the window 1mdb 75 75

Room Acoustic Environment DB 44

Indoor acoustic environment db 51 46

Treatment plan: retain the original windows, install soundproof windows, and use soundproof glass independently developed by Xinfei. The sound insulation volume of the soundproof window is not less than 49db. The amount of low-frequency sound insulation is greater than 30db.

After the treatment, the 4 planes landed, and the indoor sound environment was not greater than 30db at the moment.

Frequency: hz 100 125 160 200 250 315 400 500 630

The sound insulation DB is connected to the table frequency HZ 800 1K 2K 4K RW (CTRCTR).

Sound insulation db 49 (-1; -4)

Detection data after governance.

Frequency H Frequency Hz 63 125 250 500 1000 2000 4000 A weighted NR

1MDB outside the window

1 flight of the interior acoustic environment DB 28 after the renovation of the master bedroom

2 flights of interior acoustic environment DB 48 after the renovation of the master bedroom

3 flights of indoor acoustic environment db after the renovation of the master bedroom

4 flights of interior acoustic environment DB 28 after the renovation of the master bedroom

NR Evaluation Curve 25 25

Owner's evaluation: After the installation, the effect is really good, when the plane flies by, if you don't listen carefully, you can't feel the sound of the plane at all. It doesn't have much impact on life and work!

There is an installation case of the top standing soundproof window in Guangzhou Baiyun Airport, and the effect is very good, you can take a look.

The soundproof windows in my home are thriving, and the effect is good.

Jingyin Soundproofing Company specializes in the production of soundproof doors and windows.

When seeing a plane take off from a nearby airport, everyone is familiar with the hum of jet engines. If you live near an airport, this sound may affect your life. When the plane flew a few kilometers away, the sound still seemed very loud, and you can imagine how loud it must be in the vicinity of the plane.

While people can hear sounds like "white noise" in the cabin, this one, which is only a few meters away from the engine, doesn't sound too loud. You might say that the cabin is well isolated from the outside world, but can the sound insulation really be that good? Or is there some other scientific principle in it?

Well, it's as simple as you think, and there are many parties working together to achieve the soft sound in the cabin. So, what is it that makes a jet engine so loud on the ground than it is in the cabin?

Sound is a fluid medium, i.e., pressure and velocity waves in the air. The air molecules vibrate back and forth and collide with other air molecules, so the other molecules also vibrate, and a whole chain of vibrating air molecules is created.

The jet engine makes the air molecules move very strongly, so the sound is very loud. As the sound moves away from the jet engine, the energy is dispersed over a larger and larger area, so the sound pressure level drops.

For every doubling of distance, there is a corresponding decrease in pressure. Relative to sound, it drops by 6 dB for every doubling of distance, or 20 dB for every 10 times more distance.

The intuitive indication is that if it is 120 decibels at 10 meters, then there are 100 decibels left at 100 meters, 80 decibels at 1 kilometer, and 60 decibels at 10 kilometers. That's why we can easily hear the loud noise of the engine on the ground.

It is not easy to get sound into the cabin, there are artificial and natural conditions. First of all, the manufacturer has carefully designed it to limit the transmission of engine sound to the cabin and affect the experience.

The air molecules outside can move wildly, but it is difficult for the air molecules inside to vibrate.

In addition, relative to the speed of the aircraft, there is a moving air in the engine that travels at speeds of more than 1,000 kilometers per hour. Even before the plane starts to take off, each engine like the Boeing 747 has about a ton of air passing through it with maximum energy per second. And this rapid air will take away most of the energy before the sound enters the cabin.

However, the noise in the cabin is still quite loud, which is largely due to the transmission of mechanical sounds through the wings and fuselage, not through the air.

The vibrations of the jet engine shake the wings, the wings shake the fuselage, the fuselage shakes the panels, the panels shake the air molecules in the cabin, and at the same time our eardrum vibrates, that's what is heard.

Although, the aircraft has been carefully designed to reduce sound transmission, the energy of the jet engine is enormous, so even with the energy removed, the cabin sound is still quite loud.

I think it's the airplane itself that is very soundproof, because when you open the window, you can hear a lot of wind blowing.

Of course, there is a sound insulation effect, and the sound is very loud during the flight, otherwise it may affect people's rest.

I think the sound insulation of the plane must be the strongest, or how to face such a strong air flow.

The soundproofing of the aircraft itself is still very good. Therefore, it is generally difficult to hear the outside world on the plane.

Yes, the aircraft is set up with its own soundproofing.

The soundproofing effect of this aircraft must be very good.

That's because there are so many parties working together to make the soft sound in the cabin. For example, the sound on the ground, the sound in the cabin.

Definitely ah, the material of the aircraft must be very strong and costly.

Yes, because the metal of the fuselage of the aircraft is very hard, so the sound insulation is better.

Double glazing is good for noise prevention, and it is best to add a layer of soundproof glass doors.

If the glass door at home is wider, you can add a layer of ordinary plastic steel glass door on the inside or outside of the original glass door. The plastic steel glass door should be well sealed, and the cavity distance between the two glass doors should be more than 10 cm. Plastic steel glass doors are generally sealed with rubber strips, which is different from the "hard" of ordinary aluminum alloy windows, and the sound insulation effect is more obvious; Casement glass doors have a better seal than sliding glass doors.

The sound insulation glass door will have a better sound insulation effect than ordinary plastic steel windows, but ** will be higher than some plastic steel glass doors, according to the level of sound insulation. When consumers buy, it is best to ask the merchant for a test report and check the amount of sound insulation to judge. In addition, it is best to agree with the merchant in the contract on the sound insulation effect to be achieved after installing the soundproof glass door.

Soundproof glass is a kind of glass products that play a certain role in shielding sound, usually laminated glass with double-layer or multi-layer composite structure, and the glass film (interlayer) in the middle of the laminated glass plays a key role in the weakening of sound transmission, and glass products with sound insulation function include laminated glass.