Ventilation and noise reduction windows

Abstract

The present application provides a ventilation and noise reduction window. The ventilation and noise reduction window includes an outer window and an inner window. The outer window includes a flip window and a fixed window connected to each other, and the flip window and the fixed window are arranged side by side. An air avoidance zone is formed between the inner window and the flip window, the inner window is used to connect to the inner wall of the installation cavity, and the inner window is arranged corresponding to the flip window, the inner window part is arranged corresponding to the fixed window, and an air channel is formed between the fixed window and the inner window, and the air channel is connected to the air avoidance zone, the inner window includes a connecting frame, an outer sound-absorbing plate body and an inner sound-absorbing plate body, the connecting frame is used to be movably connected to the inner wall of the installation cavity, the periphery of the outer sound-absorbing plate body and the periphery of the inner sound-absorbing plate body are both connected to the connecting frame, the outer sound-absorbing plate body and the inner sound-absorbing plate body are arranged relatively, and a sound-absorbing cavity is formed between the outer sound-absorbing plate body and the inner sound-absorbing plate body, and the sound-absorbing cavity is connected to the air avoidance zone. The ventilation and noise reduction window layer structure is relatively simple and the ventilation and noise reduction effects are good.

Description

Technical Field

[0001] The invention relates to the technical field of noise reduction, and in particular to a ventilation and noise reduction window. Background Art

[0002] With the sharp increase in the number of cars and the rapid development of the transportation industry, urban traffic noise has become increasingly serious, directly affecting people's normal work, study, and physical and mental health, and has become a major urban public hazard. In particular, residents living in houses on both sides of the road are increasingly troubled by noise. Therefore, noise reduction windows have been developed. At first, noise reduction windows could not achieve ventilation and better lighting, which was equivalent to a wall with light transmittance. Therefore, the light transmittance of noise reduction materials was gradually improved to achieve better indoor lighting, and the ventilation performance of noise reduction windows was gradually improved to achieve noise reduction windows with ventilation function. However, when it is necessary to achieve the function of ventilation and noise reduction when the window is opened, the noise reduction window is required to be at least two layers of windows, and additional ventilation ducts are required, and a silencer structure is required on the ventilation duct to achieve the effect of ventilation and noise reduction. The ventilation volume is small and the ventilation effect is poor; in another case, the noise reduction window is required to be at least three layers of windows to achieve the effect of ventilation and noise reduction. The increase in the number of layers of the noise reduction window increases the volume of the noise reduction window, thereby increasing the structural complexity of the noise reduction window and the requirements for the wall thickness when the noise reduction window is installed, and the ventilation effect and noise reduction effect are poor. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a ventilation and noise reduction window with a simple layer structure and good ventilation and noise reduction effects.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A ventilation and noise reduction window, which is used to be installed in an installation cavity of a wall and connected to an inner wall of the installation cavity, and comprises:

[0006] An outer window, the periphery of which is used to be connected to the inner wall of the installation cavity, the outer window comprising a flip window and a fixed window connected to each other, the flip window and the fixed window being arranged side by side;

[0007] An inner window, an air avoidance zone is formed between the inner window and the flip window, the inner window is used to be connected to the inner wall of the installation cavity, and the inner window and the flip window are correspondingly arranged, the inner window part is correspondingly arranged to the fixed window, and an air channel is formed between the fixed window and the inner window, and the air channel is connected to the air avoidance zone, the inner window includes a connecting frame, an outer sound-absorbing plate body and an inner sound-absorbing plate body, the connecting frame is used to be movably connected to the inner wall of the installation cavity, the periphery of the outer sound-absorbing plate body and the periphery of the inner sound-absorbing plate body are both connected to the connecting frame, the outer sound-absorbing plate body and the inner sound-absorbing plate body are relatively arranged, a sound-absorbing cavity is formed between the outer sound-absorbing plate body and the inner sound-absorbing plate body, and the sound-absorbing cavity is connected to the air avoidance zone.

[0008] In one embodiment, the fixed window includes a mounting frame and at least two layers of sound-absorbing glass. The mounting frame is disposed in the mounting cavity, and the mounting frame is used to be connected to the inner wall of the mounting cavity. Each of the sound-absorbing glasses is disposed correspondingly, and each of the sound-absorbing glasses is disposed in the mounting frame and connected to the mounting frame.

[0009] In one embodiment, the connecting frame includes a fastening frame and a sound-absorbing filling body, the fastening frame is used to be movably connected to the inner wall of the installation cavity, the periphery of the outer sound-absorbing plate body and the periphery of the inner sound-absorbing plate body are tightly connected to the fastening frame, the fastening frame opens a first cavity, and the sound-absorbing filling body is arranged in the first cavity.

[0010] In one embodiment, the inner window also includes a movable component, which includes a fixed frame and a sliding component. A sliding groove is provided on the inner wall of the fixed frame, and the extension direction of the sliding groove is the same as the extension direction of the air channel. The sliding component is arranged on the sliding groove and is movably connected to the fixed frame, and the sliding component is connected to the connecting frame.

[0011] In one embodiment, the length of the air channel is ≥100 mm.

[0012] In one embodiment, the inner window is arranged parallel to the outer window, and the distance between the outer window surface and the inner window surface is 100 mm to 175 mm.

[0013] In one of the embodiments, a plurality of silencer holes are formed on the outer silencer plate body, and the plurality of silencer holes are distributed at intervals on the outer silencer plate body.

[0014] In one of the embodiments, the opening rate of the outer sound-absorbing plate is 0.6% to 1.0%.

[0015] In one embodiment, the depth of the silencing cavity is 30 mm to 50 mm.

[0016] In one of the embodiments, the ventilation and noise reduction window also includes a curtain box, which is arranged on a side of the inner sound-absorbing plate body away from the outer sound-absorbing plate body, and the curtain box includes an outer shell, an inner shell and a filling body, the outer shell cover is arranged on the inner shell, and the extension direction of the outer shell is the same as the extension direction of the air channel, the outer shell is used to be connected to the inner wall of the installation cavity, and the filling body is arranged in the inner shell and connected to the inner shell.

[0017] Compared with the prior art, the present invention has at least the following advantages:

[0018] 1. In the ventilation and noise reduction window of the present invention, the staggered setting of the inner window and the outer window is utilized, that is, the staggered setting of the fixed window and the inner window is utilized. When the flip window is opened, the noise of the external environment is transmitted from the flip window to the inner window, and the inner window performs noise reduction processing on the noise of the external environment. The wind of the external environment enters the air-shielding area from the flip window, and then enters the room through the air passage. The two-layer structure of the inner window and the outer window realizes the noise reduction and ventilation of the ventilation and noise reduction window.

[0019] 2. In the ventilation and noise reduction window of the present invention, the flip window and the inner window are arranged correspondingly, and the fixed window and the inner window form an air channel, that is, the width of the flip window is smaller than the width of the inner window, and the noise of the external environment transmitted from the flip window will be transmitted to the inner window, and the inner window effectively reduces the noise of the external environment through the parallel outer sound-absorbing plate body and the inner sound-absorbing plate body, and the sound-absorbing cavity formed between the outer sound-absorbing plate body and the inner sound-absorbing plate body, thereby effectively reducing the noise of the external environment transmitted from the air channel to the room, especially for the low-frequency and medium-frequency noise, and has a better reduction effect;

[0020] 3. In the ventilation and noise reduction window of the present invention, the flip window and the fixed window are connected in parallel to form an outer window, so that part of the outer window can be opened, thereby realizing the ventilation function of the ventilation and noise reduction window, and the ventilation limiting point of the ventilation and noise reduction window is the air channel. Since the inner window has a good attenuation effect on the noise of the external environment transmitted from the flip window, there is no need to set a noise reduction structure in the air channel, thereby avoiding further limiting effect on the wind at the ventilation limiting point, thereby improving the ventilation effect of the ventilation and noise reduction window. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 A cross-sectional view of a ventilation and noise reduction window according to an embodiment of the present invention;

[0023] Figure 2 Another cross-sectional view of the ventilation and noise reduction window according to one embodiment of the present invention;

[0024] Figure 3 for Figure 1 An enlarged view of point A of the ventilation and noise reduction window shown;

[0025] Figure 4 for Figure 1 The cross-sectional view of the ventilation and noise reduction window along line BB is shown;

[0026] Figure 5 for Figure 4 A schematic diagram of another state of the ventilation and noise reduction window shown;

[0027] Figure 6 for Figure 4 A schematic diagram of another state of the ventilation and noise reduction window shown;

[0028] Figure 7 The sound absorption coefficient curve of the ventilation noise reduction window at the peak sound absorption frequency of different 1 / 3 octave bands; Figure 8 Another sound absorption coefficient curve of the ventilation noise reduction window at different 1 / 3 octave bands of peak sound absorption frequencies. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The present application provides a ventilation and noise reduction window, which is installed in the installation cavity of the wall, and the ventilation and noise reduction window is connected to the inner wall of the installation cavity. The ventilation and noise reduction window includes an outer window and an inner window. The periphery of the outer window is used to connect with the inner wall of the installation cavity, and the outer window includes a flip window and a fixed window connected to each other, and the flip window and the fixed window are arranged side by side. An air avoidance zone is formed between the inner window and the flip window, the inner window is used to connect with the inner wall of the installation cavity, and the inner window and the flip window are arranged correspondingly, the inner window part is arranged correspondingly with the fixed window, and an air channel is formed between the fixed window and the inner window, and the air channel is connected to the air avoidance zone, the inner window includes a connecting frame, an outer muffler plate body and an inner muffler plate body, the connecting frame is used to be movably connected to the inner wall of the installation cavity, the periphery of the outer muffler plate body and the periphery of the inner muffler plate body are both connected to the connecting frame, the outer muffler plate body and the inner muffler plate body are arranged relatively, and a muffler cavity is formed between the outer muffler plate body and the inner muffler plate body, and the muffler cavity is connected to the air avoidance zone.

[0033] In the above-mentioned ventilation and noise reduction windows, the staggered setting of the inner window and the outer window is utilized, that is, the staggered setting of the flip window, the fixed window and the inner window is utilized. When the flip window is open, the noise of the external environment is transmitted from the flip window to the inner window, and the inner window performs noise reduction processing on the noise of the external environment. The wind from the external environment enters the air shelter from the flip window, and then enters the room through the air duct. The two-layer structure of the inner window and the outer window is utilized to achieve noise reduction and ventilation of the ventilation and noise reduction windows. The flip window is arranged correspondingly to the inner window, and the fixed window and the inner window form an air channel, that is, the width of the flip window is smaller than the width of the inner window, and the noise of the external environment transmitted from the flip window will be transmitted to the inner window, and the inner window effectively reduces the noise of the external environment through the parallel outer sound-absorbing plate and the inner sound-absorbing plate, and the sound-absorbing cavity formed between the outer sound-absorbing plate and the inner sound-absorbing plate, thereby effectively reducing the noise of the external environment transmitted from the air channel to the room, especially for the noise of medium and low frequencies (80Hz~160Hz) and medium frequencies (160Hz~1250Hz), and has a better reduction effect. And the flip window and the fixed window are connected in parallel to form an outer window, so that part of the outer window can be opened, realizing the ventilation effect of the ventilation and noise reduction window, and the ventilation flow limiting point of the ventilation and noise reduction window is the air channel. Since the inner window has a good reduction effect on the noise of the external environment transmitted from the flip window, it is not necessary to set a noise reduction structure in the air channel, thereby avoiding further flow limiting effect on the wind at the ventilation flow limiting point, and improving the ventilation effect of the ventilation and noise reduction window.

[0034] See also Figure 1 In order to better understand the ventilation and noise reduction window 10 of the present application, the ventilation and noise reduction window 10 of the present application is further explained and illustrated below. The ventilation and noise reduction window 10 of one embodiment includes an outer window 100 and an inner window 200. Please also refer to Figure 2 and Figure 4The periphery of the outer window 100 is used to be connected to the inner wall of the installation cavity 20. The outer window 100 includes a flip window 110 and a fixed window 120 that are connected to each other. The flip window 110 and the fixed window 120 are arranged side by side. An air avoidance zone 300 is formed between the inner window 200 and the outer window 100. The inner window 200 and the flip window 110 are connected to the inner wall of the installation cavity 20. An air channel 400 is formed between the fixed window 120 and the inner window 200. The air channel 400 is connected to the air avoidance zone 300. The inner window 200 includes a connecting frame 220, an outer sound-absorbing plate 230 and an inner sound-absorbing plate 240. The connecting frame 220 is used to be movably connected to the inner wall of the installation cavity 20. The periphery of the outer sound-absorbing plate 230 and the periphery of the inner sound-absorbing plate 240 are both connected to the connecting frame 220. The outer sound-absorbing plate 230 and the inner sound-absorbing plate 240 are arranged opposite to each other. A sound-absorbing cavity is formed between the outer sound-absorbing plate 230 and the inner sound-absorbing plate 240, and the sound-absorbing cavity 250 is connected to the air avoidance zone 300.

[0035] It can be understood that the above-mentioned ventilation and noise reduction window 10 is installed in the installation cavity 20 of the wall. The installation cavity 20 is actually a through hole opened on the wall. The installation cavity 20 is connected to the indoor and outdoor respectively to achieve the ventilation effect. In the ventilation and noise reduction window 10, the flip window 110 and the fixed window 120 are connected in parallel to form an outer window 100. The periphery of the outer window 100 is connected to the inner wall of the installation cavity 20. It can be understood that the outer window 100 divides the installation cavity 20 into two parts, one part is connected to the indoor, and the other part is connected to the outdoor, while the inner window 200 and the flip window 110 are set on the same inner wall of the installation cavity 20, indicating that the inner window 200 does not divide the installation cavity 20, and the inner window 200 and the fixed window 120 are staggered to form an air channel 400. The moving assembly 210 of the inner window 200 is connected to the connecting frame 220, so that the inner window 200 can be moved. When the flip window 110 needs to be opened or closed, the flip window 110 can be opened or closed after the inner window 200 is moved, which improves the convenience of opening or closing the flip window 110, and realizes the outward opening of the flip window 110, avoiding the problem of occupying indoor space when the flip window 110 is opened or closed. The periphery of the outer sound-absorbing plate 230 and the periphery of the inner sound-absorbing plate 240 are both connected to the connecting frame 220, and the connecting frame 220 reduces the gap between the outer sound-absorbing plate 230 or the inner sound-absorbing plate 240 and the inner wall of the installation cavity 20 or the moving assembly 210, thereby reducing the introduction of noise from the external environment at the gap, thereby improving the noise reduction effect of the ventilation noise reduction window 10. The outer sound-absorbing plate 230 and the inner sound-absorbing plate 240 have good noise reduction effects, and a sound-absorbing chamber 250 is formed between the outer sound-absorbing plate 230 and the inner sound-absorbing plate 240. The sound-absorbing chamber 250 has a good attenuation effect on the noise of the external environment, that is, the inner window 200 has a good noise reduction effect, avoiding the setting of a noise reduction structure in the air channel 400, and further avoiding the flow limiting effect on the wind at the ventilation flow limiting point, thereby improving the ventilation effect of the ventilation and noise reduction window 10.

[0036] The above-mentioned ventilation and noise reduction window 10 utilizes the staggered setting of the inner window 200 and the outer window 100, that is, utilizes the staggered setting of the fixed window 120 and the inner window 200. When the flip window 110 is opened, the noise of the external environment is transmitted from the flip window 110 to the inner window 200, and the inner window 200 performs noise reduction processing on the noise of the external environment. The wind of the external environment enters the air shelter 300 from the flip window 110, and then enters the room through the air duct 400. The two-layer structure of the inner window 200 and the outer window 100 realizes the noise reduction and ventilation of the ventilation and noise reduction window 10. The flip window 110 is arranged corresponding to the inner window 200, and the fixed window 120 and the inner window 200 form an air channel 400, that is, the width of the flip window 110 is smaller than the width of the inner window 200, and the noise of the external environment transmitted from the flip window 110 will be transmitted to the inner window 200. The inner window 200 effectively reduces the noise of the external environment through the parallel outer sound-absorbing plate 230 and the inner sound-absorbing plate 240, and the sound-absorbing cavity 250 formed between the outer sound-absorbing plate 230 and the inner sound-absorbing plate 240, thereby effectively reducing the noise of the external environment transmitted from the air channel 400 to the room, especially for the low-frequency and medium-frequency noise. Since most of the noise of the external environment is low-frequency and medium-frequency noise, most of the noise of the external environment is absorbed by the ventilation noise reduction window 10, and the noise of the external environment is better targeted. Absorption. The flip window 110 and the fixed window 120 are connected in parallel to form an outer window 100, so that part of the outer window 100 can be opened, realizing the ventilation function of the ventilation and noise reduction window 10, and the ventilation limiting point of the ventilation and noise reduction window 10 is the air channel 400. Since the inner window 200 has a good attenuation effect on the noise of the external environment transmitted from the flip window 110, there is no need to set a noise reduction structure in the air channel 400, thereby avoiding further limiting the wind at the ventilation limiting point, thereby improving the ventilation effect of the ventilation and noise reduction window 10.

[0037] It should be noted that the ventilation and noise reduction window 10 is mainly used to absorb low-frequency and medium-frequency sound energy, absorb sound energy in front of the outer window and the inner window, and reduce the reverberation time without interfering with the transparency and sense of space in the room. In front of the openable outer window of the ventilation and noise reduction window 10, the sound energy transmitted from the outside to the room is reduced, and transparency and natural ventilation are maintained. The openings in the outer wall of the building provide additional ventilation for the room, while reducing the transmission of outdoor noise.

[0038] Please also read Figure 4 , Figure 5 and Figure 6In one embodiment, the flip window 110 is a double-opening flip window. In this embodiment, the flip window 110 is connected to the fixed window 120 through a hinge, and the flip window 110 is connected to the inner wall of the installation cavity 20 through a hinge, so that the flip window 110 can be opened and closed. It should be noted that Figure 4 , Figure 5 and Figure 6 They are schematic diagrams of the structures of the flip window 110 in different opening states.

[0039] In order to ensure the structural strength of the ventilation and noise reduction window 10 and improve the noise reduction effect of the ventilation and noise reduction window 10, in one embodiment, the outer sound-absorbing plate 230 is a PMMA sound-absorbing plate, which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10.

[0040] It should be noted that the PMMA sound-absorbing board is a sound-absorbing board made of polymethyl methacrylate.

[0041] In order to ensure the structural strength of the ventilation and noise reduction window 10 and improve the noise reduction effect of the ventilation and noise reduction window 10, in one embodiment, the inner sound-absorbing plate 240 is a sound-absorbing glass plate, which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10.

[0042] In order to improve the effect of reducing the noise of the external environment by the ventilation and noise reduction window 10, in one embodiment, the thickness of the inner sound-absorbing plate 240 is 5mm~10mm, which effectively improves the noise reduction effect of the inner sound-absorbing plate 240, and further effectively improves the effect of reducing the noise of the external environment by the ventilation and noise reduction window 10.

[0043] In one of the embodiments, the thickness of the outer sound-absorbing plate 230 is 1.0 mm to 3.0 mm, which effectively improves the noise reduction effect of the outer sound-absorbing plate 230, thereby effectively improving the effect of the ventilation and noise reduction window 10 on reducing the noise of the external environment.

[0044] Please also read Figure 1 and Figure 2In one embodiment, the fixed window 120 includes a mounting frame 121 and at least two layers of sound-absorbing glass 122. The mounting frame 121 is disposed in the mounting cavity 20 and is used to be connected to the inner wall of the mounting cavity 20. Each sound-absorbing glass 122 is disposed correspondingly, and each sound-absorbing glass 122 is disposed in the mounting frame 121 and connected to the mounting frame 121. It can be understood that the mounting frame 121 fixes the sound-absorbing glass 122 in the mounting cavity 20, thereby improving the installation stability of the sound-absorbing glass 122, and thereby improving the structural stability of the ventilation and noise reduction window 10; and the mounting frame 121 fills the gap between the sound-absorbing glass 122 and the inner wall of the mounting cavity 20, thereby preventing the noise of the external environment from being introduced through the gap, thereby enhancing the noise reduction effect of the ventilation and noise reduction window 10. At least two layers of sound-absorbing glass 122 block the noise of the external environment at at least two levels, and the cavity formed between at least two layers of sound-absorbing glass 122 is also conducive to reducing the noise of the external environment. Therefore, the fixed window 120 includes at least two layers of sound-absorbing glass 122, which effectively improves the noise reduction effect of the fixed window 120 on the external environment, and the sound-absorbing glass 122 is in a transparent state and does not block the light. In this embodiment, the sound-absorbing glass 122 is arranged parallel to each other, which reduces the space occupied by the fixed window 120, thereby reducing the volume of the noise reduction window.

[0045] In one embodiment, the mounting frame 121 is an aluminum mounting frame 121 , which ensures the connection stability of the soundproof glass 122 .

[0046] In one embodiment, the mounting frame 121 is an adhesive mounting frame 121 , which achieves the connection stability of the soundproof glass 122 .

[0047] In one embodiment, a sealing structure is provided at the connection between the mounting frame 121 and the sound-absorbing glass 122 to further reduce the introduction of noise from the external environment.

[0048] See also Figure 4 In one embodiment, the air passage 400 includes an air inlet 410 and an air outlet 420 , the air inlet 410 is connected to the air avoidance area 300 , and the air outlet 420 is connected to the room, thereby realizing the circulation of wind in the air passage 400 .

[0049] Please also read Figure 1 and Figure 2 In one embodiment, the connecting frame 220 includes a fastening frame 221 and a sound-absorbing filling body 222. The fastening frame 221 is used to be movably connected to the inner wall of the installation cavity 20. The periphery of the outer sound-absorbing plate 230 and the periphery of the inner sound-absorbing plate 240 are tightly connected to the fastening frame 221. The fastening frame 221 is provided with a first cavity 2211, and the sound-absorbing filling body is arranged in the first cavity.

[0050] Please also read Figure 1 and Figure 2 In one embodiment, the fastening frame 221 is further provided with a second cavity 2212, and the first cavity 2211 is arranged between the muffler cavity 250 and the second cavity 2212. It can be understood that the connecting frame 220 is arranged between the outer muffler plate 230 and the mobile assembly 210 or the inner muffler plate 240 and the mobile assembly 210, which effectively reduces the noise of the external environment transmitted into the room from the gap between the outer muffler plate 230 and the mobile assembly 210 or the inner muffler plate 240 and the mobile assembly 210, and the fastening frame 221 of the connecting frame 220 is provided with a first cavity 2211 or a second cavity 2212. When the noise of the external environment enters the first cavity 2211 and the second cavity 2212, the noise of the external environment is effectively weakened by the resistive muffler, and the muffler filling body 222 further weakens the noise of the external environment by the resistive muffler. The fastening frame 221 also functions as a reinforcing rib, thereby improving the structural strength of the inner window 200 .

[0051] In one embodiment, the fastening frame 221 is an aluminum frame, which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10.

[0052] In one embodiment, the sound-absorbing filler 222 is made of at least one of harmonious foam, glass fiber and rock wool, thereby improving the noise reduction effect of the ventilation and noise reduction window 10 .

[0053] Please also read Figure 1 , Figure 2 and Figure 3 In one embodiment, the inner window 200 further includes a moving assembly 210. The moving assembly 210 includes a fixed frame 211 and a sliding assembly 212. A sliding groove 2111 is provided on the inner wall of the fixed frame 211. The extending direction of the sliding groove 2111 is the same as the extending direction of the air passage 400. The sliding assembly 212 is arranged on the sliding groove 2111 and is movably connected to the fixed frame 211. The sliding assembly 212 is connected to the connecting frame 220. It can be understood that the moving component 210 realizes the mobility of the inner window 200, and the extension direction of the slide groove 2111 is the same as the extension direction of the air duct 400, so that the inner window 200 can move left and right relative to the flip window 110, and the flip window 110 can be opened or closed indoors. When the flip window 110 needs to be opened or closed, the inner window 200 is moved and then the flip window 110 is opened or closed, which improves the convenience of opening or closing the flip window 110 and realizes the outward opening of the flip window 110, avoiding the problem of occupying indoor space when the flip window 110 is opened or closed.

[0054] In one embodiment, two slide grooves 2111 are formed on the fixing frame 211 . The slide grooves 2111 are respectively located at two ends of the inner sound-absorbing plate 240 . The extending direction of each slide groove 2111 is the same as the extending direction of the air passage 400 .

[0055] In one embodiment, there are two sliding components 212, which are respectively arranged at two ends of the inner sound-absorbing plate 240 and are slidably connected to the fixed frame 211, and each sliding component 212 is arranged in a one-to-one correspondence with each slide groove 2111. It can be understood that the two sliding components 212 are arranged in a one-to-one correspondence on the two slide grooves 2111, which improves the smoothness of the movement of the inner window 200 and further improves the convenience of opening or closing the flip window 110.

[0056] In one of the embodiments, the fixing frame 211 is an aluminum fixing frame 211 or a hardware fixing frame 211 , which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10 .

[0057] Please also read Figure 2 and Figure 3 In one embodiment, the sliding assembly 212 includes a connecting rod 2121 and a pulley 2122. The pulley 2122 is arranged on the slide groove 2111. The pulley 2122 is connected to the connecting frame 220 through the connecting rod 2121, ensuring the mobility of the inner window 200, thereby improving the convenience of opening or closing the flip window 110, realizing the outward opening of the flip window 110, and avoiding the problem of occupying indoor space when the flip window 110 is opened or closed.

[0058] In one embodiment, the length of the air passage 400 is ≥100 mm. It is understandable that if the length of the air passage 400 is too small, the noise from the external environment transmitted from the side will be directly transmitted into the room from the air passage 400, and the noise reduction requirement cannot be met. Therefore, the length of the air passage 400 is ≥100 mm, which avoids the problem that the noise from the external environment transmitted from the side is directly transmitted into the room from the air passage 400, and ensures the noise reduction effect of the ventilation and noise reduction window 10. However, if the length of the air passage 400 is too long, it will affect the entry of wind and the ventilation effect. Therefore, the length of the air passage 400 is 100 mm to 120 mm.

[0059] It should be noted that the air passage 400 is a passage formed between the corresponding parts of the inner window 200 and the fixed window 120, the air passage 400 is connected to the air avoidance area 300 through the airflow inlet 410, and the air passage 400 is connected to the room through the airflow outlet 420. When the length or depth of the air passage 400 is mentioned, it is the relative distance between the corresponding parts of the inner window 200 and the fixed window 120, that is, the width of the overlapping part of the inner window 200 and the fixed window 120.

[0060] In one embodiment, the distance between the surface of the outer window 100 and the surface of the inner window 200 is 100 mm to 175 mm. It can be understood that the air avoidance area 300 and the air passage 400 formed by the surface of the outer window 100 and the surface of the inner window 200 have a certain reduction effect on the noise of the external environment through the resistance silencing method. When the distance between the surface of the outer window 100 and the surface of the inner window 200 is 100 mm to 175 mm, the noise of the external environment has a good reduction effect, and when the distance between the surface of the outer window 100 and the surface of the inner window 200 is 100 mm to 175 mm, the air passage 400 has a good ventilation effect, and it is not easy to generate regenerative noise at the air passage 400 when the air volume is large.

[0061] In one embodiment, a plurality of silencer holes 231 are provided on the outer silencer plate 230, and the plurality of silencer holes 231 are distributed at intervals on the outer silencer plate 230. It is understandable that the plurality of silencer holes 231 are provided on the outer silencer plate 230, so that the outer silencer plate 230 can not only reduce the noise of the external environment by resistive silencing, but also reduce the noise of the external environment by microporous silencing, further improving the effect of the ventilation and noise reduction window 10 on reducing the noise of the external environment, further avoiding the need to set a noise reduction structure in the air channel 400, and ensuring the ventilation effect of the air channel 400. In this embodiment, a plurality of silencer holes 231 are distributed in an array on the outer silencer plate 230.

[0062] In one of the embodiments, the opening rate of the outer sound-absorbing plate 230 is 0.6% to 1.0%, which effectively improves the noise reduction effect of the outer sound-absorbing plate 230, and further effectively improves the effect of the ventilation and noise reduction window 10 on reducing the noise of the external environment.

[0063] In one embodiment, the depth of the silencing cavity 250 is 30 mm to 50 mm. It is understandable that in order to reduce the occupied volume of the ventilation and noise reduction window 10, the depth of the silencing cavity is further reduced, but for a silencing cavity less than or equal to 50 mm, the sound absorption coefficient of low-frequency noise below 400 Hz is generally less than 0.5. Therefore, under the limitation of the depth of the silencer cavity 250, it is a great demand to develop medium and low frequency sound absorbers. Therefore, the depth of the silencer cavity 250 is coordinated with the aperture, opening rate and thickness of the outer silencer plate 230 with the silencer hole 231 to achieve a better silencer effect of the ventilation and noise reduction window 10 for low frequency noise. Specifically, the aperture of the silencer hole 231 is 0.1mm~1.0mm, and the opening rate of the outer silencer plate 230 is 0.6%~1.0%, the thickness of the outer silencer plate 230 is 1.0mm~3.0mm and the depth of the silencer cavity 250 is 30mm~50mm, which effectively improves the low frequency silencer effect of the ventilation and noise reduction window 10.

[0064] In one of the embodiments, when the aperture of the silencer hole 231 is 0.1mm~1.0mm, the ventilation and noise reduction window 10 has a better low-frequency sound-absorbing effect. It can be understood that the sound absorption effect depends on the aperture of the silencer hole 231, the opening rate, the thickness of the outer silencer plate 230 with the silencer hole 231 and the depth of the silencer cavity 250. When the aperture of the silencer hole 231 is 0.1mm~1.0mm, and the opening rate of the outer silencer plate 230 is 0.6%~1.0%, the thickness of the outer silencer plate 230 is 1.0mm~3.0mm and the depth of the silencer cavity 250 is 30mm~50mm, the ventilation and noise reduction window 10 has a better sound-absorbing effect on low-frequency noise, which effectively improves the low-frequency sound-absorbing effect of the ventilation and noise reduction window 10.

[0065] See also Figure 1In one embodiment, the ventilation and noise reduction window 10 further includes a curtain box 500, which is arranged on a side of the inner sound-absorbing plate 240 away from the outer sound-absorbing plate 230, and includes an outer shell 510, an inner shell 520 and a filling body 530, wherein the outer shell 510 is covered on the inner shell 520, and the extension direction of the outer shell 510 is the same as the extension direction of the air passage 400, the outer shell 510 is used to be connected to the inner wall of the installation cavity 20, and the filling body 530 is arranged in the inner shell 520 and connected to the inner shell 520. It can be understood that the function of the curtain box 500 is to assist in setting the curtain and to improve the noise reduction effect of the ventilation and noise reduction window 10, wherein the outer shell 510, the inner shell 520 and the filling body 530 all have the effect of noise reduction, thereby ensuring the noise reduction effect of the curtain box 500. Specifically, on higher floors, the noise from the external environment generally enters the room from below. Therefore, the angle of noise transmission forms an angle with the ventilation and noise reduction window 10. At this time, due to the setting of the curtain box 500, it is beneficial to further reduce the noise from the external environment transmitted from below, thereby improving the attenuation effect of the ventilation and noise reduction window 10 on the noise from the external environment, further ensuring the noise reduction effect of the ventilation and noise reduction window 10, and on lower floors, the curtain box 500 also has a certain attenuation effect on the noise from the external environment transmitted horizontally or from above.

[0066] In one embodiment, the outer shell 510 is an aluminum shell, which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10.

[0067] In one embodiment, the inner shell 520 is an inner fiber shell, which further improves the noise reduction effect of the ventilation and noise reduction window 10.

[0068] In one embodiment, the filling body 530 is made of at least one of harmonious foam, glass fiber and rock wool, which further improves the noise reduction effect of the ventilation and noise reduction window 10.

[0069] It can be understood that the ventilation and noise reduction window 10 of the present invention has good ventilation and noise reduction effects when used under normal weather conditions. However, when the wind volume and wind speed are large, regeneration noise is easily generated at the air passage 400 of the ventilation and noise reduction window 10. The generation of regeneration noise greatly reduces the noise reduction effect of the ventilation and noise reduction window 10, which will have a greater impact on users. Therefore, under the premise of having a relatively simple layer structure of the ventilation and noise reduction window 10 and not adding ventilation ducts and not installing silencers at the ventilation points, in order to ensure the noise reduction effect of the ventilation and noise reduction window 10, it is necessary to reduce the regeneration noise generated at the ventilation duct, and the main factor causing the regeneration noise is air turbulence. Therefore, please refer to Figure 1 and Figure 2In one embodiment, the fixed window 120 also includes a silencer 123, which is arranged between the inner wall of the installation cavity 20 and the installation frame 121. The silencer 123 includes a silencer shell 1231, and a plurality of resistance cavities 1232 are opened in the silencer shell 1231. The volumes of every two resistance cavities 1232 are different, and the extension direction of each resistance cavity 1232 is the same as the extension direction of the air channel 400, and each resistance cavity 1232 is connected to the air channel 400.

[0070] The above-mentioned silencer 123 reduces the gap between the installation frame 121 and the inner wall of the installation cavity 20, reduces the introduction of noise from the external environment, and improves the noise reduction effect of the ventilation and noise reduction window 10; the multiple resistance cavities 1232 of the silencer 123 reduce the regenerated noise generated by air turbulence by means of resistance silencer, and the volumes of each resistance cavity 1232 are different, which are used to reduce noise of different frequencies, and the extension direction of each resistance cavity 1232 is the same as the extension direction of the air channel 400, and will not hinder the airflow, thereby ensuring the ventilation effect of the ventilation and noise reduction window 10 and the noise reduction effect of the ventilation and noise reduction window 10.

[0071] In the ventilation and noise reduction window 10 of the present invention, by the staggered arrangement of the fixed window 120 and the inner window 200, it is not necessary to arrange a noise reduction structure in the air channel 400, and the noise reduction and ventilation of the ventilation and noise reduction window 10 can be achieved by only using the two-layer structure of the inner window 200 and the outer window 100. It can be understood that if the inner window 200 cannot achieve a good reduction effect on the noise of the external environment, the noise reduction requirements of the ventilation and noise reduction window 10 cannot be achieved by only using the staggered arrangement of the two layers of windows. Therefore, in combination with the parallel arrangement of the outer muffler plate 230 and the inner muffler plate 240 of the inner window 200, and the muffler cavity 250 with a depth of 30mm to 50mm formed between the outer muffler plate 230 and the inner muffler plate 240, the noise of the external environment is first effectively reduced, and then the noise of the external environment is further reduced by using the air channel 400, thereby achieving a good noise reduction effect, thereby avoiding the problem of setting a noise reduction structure in the air channel 400, thereby reducing the obstruction to the airflow, and achieving a good ventilation effect. However, when the wind volume and wind speed are large, turbulence is easily generated when the airflow passes through the air passage 400, which in turn generates regenerative noise, resulting in the noise reduction effect of the ventilation and noise reduction window 10 failing to meet the requirements. Therefore, the inner window 200 and the silencer 123 are used in conjunction with the inner window 200 to reduce the noise of the external environment, and then the regenerative noise is reduced through the air passage 400 and the multiple resistance cavities 1232 of the silencer 123, thereby effectively reducing the noise in the room. In addition, the extension direction of each resistance cavity 1232 of the silencer 123 is the same as the extension direction of the air passage 400, which will not hinder the airflow, thereby ensuring the ventilation effect of the ventilation and noise reduction window 10.

[0072] Please also read Figure 1 and Figure 2 In one of the embodiments, a rounded transition is formed at the connection between a side of the mounting frame 121 close to the air passage 400 and a side of the mounting frame 121 close to the flip window 110, which is beneficial to the passage of airflow, further reducing the generation of turbulence when the airflow passes through the air passage 400, thereby reducing the generation of regenerated noise and further reducing the noise in the room.

[0073] Please also read Figure 1 and Figure 2 In one of the embodiments, the connection between the side of the fastening frame 221 close to the air passage 400 and the side of the fastening frame 221 close to the air flow outlet 420 has a rounded transition, which is conducive to the passage of airflow, further reduces the generation of turbulence when the airflow passes through the air passage 400, thereby reducing the generation of regenerative noise and further reducing the noise in the room.

[0074] In one embodiment, the silencer 123 is an aluminum block, which ensures the structural strength of the ventilation and noise reduction window 10 and improves the noise reduction effect of the ventilation and noise reduction window 10.

[0075] It can be understood that in the inner window 200 of the ventilation and noise reduction window 10, the sealing problem of the outer sound-absorbing plate 230 or the inner sound-absorbing plate 240 and the connecting frame 220 is prone to occur, resulting in a greatly reduced noise reduction effect of the inner window 200. Therefore, in one of the embodiments, the inner sound-absorbing plate 240 is penetrated by the sound-absorbing filling body 222 and connected to the fastening frame 221, and the side wall of the outer sound-absorbing plate 230 is connected to the side wall of the fastening frame 221, which effectively improves the sealing of the connection between the outer sound-absorbing plate 230 or the inner sound-absorbing plate 240 and the connecting frame 220, thereby effectively improving the noise reduction effect of the inner window 200.

[0076] It can be understood that the inner window 200 plays a major role in reducing the noise from the external environment. In order to better improve the sound-absorbing effect of the inner window 200 and reduce the impact of noise on residents, in one embodiment, the inner window 200 also includes a sound-absorbing layer, which is attached to the inner sound-absorbing plate 240, and the sound-absorbing layer is located in the sound-absorbing cavity. A number of bent deep cavities are opened on the sound-absorbing layer, and the deep cavities are connected to the sound-absorbing cavity, so that the sound-absorbing effect of the inner window 200 is further improved, thereby effectively improving the noise reduction effect of the ventilation and noise reduction window 10.

[0077] Compared with the prior art, the present invention has at least the following advantages:

[0078] 1. In the ventilation and noise reduction window 10 of the present invention, the staggered setting of the inner window 200 and the outer window 100 is utilized, that is, the staggered setting of the fixed window 120 and the inner window 200 is utilized. When the flip window 110 is opened, the noise of the external environment is transmitted from the flip window 110 to the inner window 200, and the inner window 200 performs noise reduction processing on the noise of the external environment. The wind of the external environment enters the air refuge area 300 from the flip window 110, and then enters the room through the air duct 400. The two-layer structure of the inner window 200 and the outer window 100 is utilized to achieve noise reduction and ventilation of the ventilation and noise reduction window 10.

[0079] 2. In the ventilation and noise reduction window 10 of the present invention, the flip window 110 is arranged corresponding to the inner window 200, and the fixed window 120 and the inner window 200 form an air passage 400, that is, the width of the flip window 110 is smaller than the width of the inner window 200, and the noise of the external environment transmitted from the flip window 110 will be transmitted to the inner window 200, and the inner window 200 effectively reduces the noise of the external environment through the outer sound-absorbing plate body 230 and the inner sound-absorbing plate body 240 arranged in parallel, and the sound-absorbing cavity 250 formed between the outer sound-absorbing plate body 230 and the inner sound-absorbing plate body 240, thereby effectively reducing the noise of the external environment transmitted from the air passage 400 to the room;

[0080] 3. In the ventilation and noise reduction window 10 of the present invention, the flip window 110 and the fixed window 120 are connected in parallel to form an outer window 100, so that part of the outer window 100 can be opened, thereby realizing the ventilation function of the ventilation and noise reduction window 10, and the ventilation flow limiting point of the ventilation and noise reduction window 10 is the air channel 400. Since the inner window 200 has a good attenuation effect on the noise of the external environment transmitted from the flip window 110, there is no need to set a noise reduction structure in the air channel 400, thereby avoiding further flow limiting effect on the wind at the ventilation flow limiting point, thereby improving the ventilation effect of the ventilation and noise reduction window 10.

[0081] The following is a test for measuring the sound absorption coefficient of the ventilation and noise reduction window of the present invention.

[0082] Experimental group: The silencing chambers were ventilation and noise reduction windows of 30mm, 35mm, 40mm, 45mm and 50mm respectively.

[0083] Test method: The reverberation chamber method is used to determine the sound absorption coefficient of the ventilation noise reduction window at the peak sound absorption frequency of 100Hz~5KHz in the 1 / 3 octave band.

[0084] Test results: The sound absorption coefficients of ventilation noise reduction windows at different 1 / 3 octave bands of peak sound absorption frequencies are shown in Table 1. Figure 7 and Figure 8 As shown:

[0085] Table 1: Sound absorption coefficients of ventilation and noise reduction windows at different 1 / 3 octave bands of peak sound absorption frequencies

[0086]

[0087] Conclusion

[0088] From Table 1, Figure 7 and Figure 8 It can be seen that the ventilation and noise reduction window of the present invention has a good sound absorption effect on medium-low frequency and medium-frequency noise, especially medium-frequency (160Hz~1250Hz) noise. It can be understood that medium-frequency noise basically includes most of the noise in the external environment, and the human ear is also the most sensitive to medium-frequency noise. The sound absorption coefficient of the ventilation and noise reduction window for medium-frequency noise reaches more than 0.5, which has a good sound absorption effect.

[0089] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A ventilation and noise reduction window, which is used to be installed in an installation cavity of a wall and connected to the inner wall of the installation cavity, characterized in that: The ventilation and noise reduction window comprises: An outer window, the periphery of which is used to be connected to the inner wall of the installation cavity, the outer window comprising a flip window and a fixed window connected to each other, the flip window and the fixed window being arranged side by side; An inner window, an air avoidance zone is formed between the inner window and the flip window, the inner window is used to be connected to the inner wall of the installation cavity, and the inner window and the flip window are arranged correspondingly, the inner window part is arranged correspondingly to the fixed window, and an air channel is formed between the fixed window and the inner window, and the air channel is communicated with the air avoidance zone, the inner window includes a connecting frame, an outer sound-absorbing plate body and an inner sound-absorbing plate body, the connecting frame body is used to be movably connected to the inner wall of the installation cavity, the periphery of the outer sound-absorbing plate body and the periphery of the inner sound-absorbing plate body are both connected to the connecting frame body, the outer sound-absorbing plate body and the inner sound-absorbing plate body are arranged oppositely, a sound-absorbing cavity is formed between the outer sound-absorbing plate body and the inner sound-absorbing plate body, and the sound-absorbing cavity is communicated with the air avoidance zone; Wherein, the fixed window and the inner window are staggered, and the width of the flip window is smaller than the width of the inner window.

2. The ventilation and noise reduction window according to claim 1, characterized in that: The fixed window includes a mounting frame and at least two layers of sound-absorbing glass. The mounting frame is arranged in the mounting cavity and is used to be connected to the inner wall of the mounting cavity. Each of the sound-absorbing glasses is arranged correspondingly, and each of the sound-absorbing glasses is arranged in the mounting frame and connected to the mounting frame.

3. The ventilation and noise reduction window according to claim 1, characterized in that: The connecting frame includes a fastening frame and a sound-absorbing filling body. The fastening frame is used to be movably connected to the inner wall of the installation cavity. The periphery of the outer sound-absorbing plate body and the periphery of the inner sound-absorbing plate body are tightly connected to the fastening frame. The fastening frame opens a first cavity, and the sound-absorbing filling body is arranged in the first cavity.

4. The ventilation and noise reduction window according to claim 1, characterized in that: The inner window also includes a moving component, which includes a fixed frame and a sliding component. A sliding groove is opened on the inner wall of the fixed frame, and the extension direction of the sliding groove is the same as the extension direction of the air channel. The sliding component is arranged on the sliding groove and is movably connected to the fixed frame. The sliding component is connected to the connecting frame.

5. The ventilation and noise reduction window according to claim 1, characterized in that: The length of the air channel is ≥100 mm.

6. The ventilation and noise reduction window according to claim 1, characterized in that: The inner window is arranged parallel to the outer window, and the distance between the outer window surface and the inner window surface is 100 mm to 175 mm.

7. The ventilation and noise reduction window according to claim 1, characterized in that: The outer sound-absorbing plate body is provided with a plurality of sound-absorbing holes, and the plurality of sound-absorbing holes are distributed at intervals on the outer sound-absorbing plate body.

8. The ventilation and noise reduction window according to claim 7, characterized in that: The opening rate of the outer sound-absorbing plate body is 0.6% to 1.0%.

9. The ventilation and noise reduction window according to claim 1, characterized in that: The depth of the silencing chamber is 30 mm to 50 mm.

10. The ventilation and noise reduction window according to any one of claims 1 to 9, characterized in that: The ventilation and noise reduction window also includes a curtain box, which is arranged on a side of the inner sound-absorbing plate body away from the outer sound-absorbing plate body. The curtain box includes an outer shell, an inner shell and a filling body. The outer shell cover is arranged on the inner shell, and the extension direction of the outer shell is the same as the extension direction of the air channel. The outer shell is used to be connected to the inner wall of the installation cavity, and the filling body is arranged in the inner shell and connected to the inner shell.

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