A muffling assembly and muffler

Abstract

The present application relates to the technical field of silencer, especially to a silencing assembly and a silencer, the silencing assembly is provided with a first panel, a second panel, a first connecting piece and a second connecting piece; the transparent first panel and the second panel are opposite and spaced apart; the first panel is provided with a plurality of through holes; the first connecting piece and the second connecting piece are opposite and spaced apart; one end of the first connecting piece is connected with the first panel, and the other end is detachably connected with the second panel; one end of the second connecting piece is connected with the first panel, and the other end is detachably connected or hinged with the second panel; the first panel, the second panel, the first connecting piece and the second connecting piece enclose a cavity in the shape of a cuboid. When dust collection affects the silencing effect, the second panel can be detached or rotated to open the inside of the silencing assembly for cleaning, and the dust collection is cleaned away, so that the silencing effect is ensured not to be affected by cleaning the dust collection, which is easy to realize, has higher efficiency and lower cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of muffler, in particular to a muffling assembly and a muffler. BACKGROUND

[0002] Muffler is a device that allows airflow to pass through but can prevent or weaken the propagation of sound energy, used to eliminate aerodynamic noise. The muffler provided with micro-perforated sound-absorbing panels is widely used because it controls the relative sound resistance rate by using the sound resistance of the perforations itself, without filling sound-absorbing materials, thus avoiding secondary pollution and being applicable to high-temperature, high-humidity, airflow impact, corrosion and other environments.

[0003] However, the muffler has the following disadvantages: with the increase of use time, fine dust in the air can enter the internal cavity through the empty barrels on the micro-perforated plate and be adsorbed on the inner surface of the micro-perforated plate. Long-term accumulation can block the holes and reduce or even eliminate the muffling effect. The existing treatment method is to disassemble the original muffler and replace it with a new one. However, the disassembly and assembly of the muffler are difficult, resulting in low replacement efficiency and high cost. SUMMARY

[0004] The present application provides a muffling assembly and a muffler to solve the technical problems of low replacement efficiency and high cost in the prior art.

[0005] The first aspect of the present application provides a muffling assembly, comprising:

[0006] a first panel, a second panel, a first connecting piece and a second connecting piece;

[0007] The first panel and the second panel made of transparent material are spaced apart from each other;

[0008] The first panel is provided with a plurality of through holes extending in the direction from the first panel to the second panel;

[0009] The first connecting piece and the second connecting piece are spaced apart from each other;

[0010] One end of the first connecting piece is connected to the first panel, and the opposite end is detachably connected to the second panel;

[0011] One end of the second connecting piece is connected to the first panel, and the opposite end is detachably connected or hinged to the second panel;

[0012] The first panel, the second panel, the first connecting piece and the second connecting piece enclose a cavity in the shape of a rectangular parallelepiped.

[0013] In the muffling assembly of the first possible implementation of the first aspect, the first panel is detachably connected with the first connecting piece, detachably connected with the second connecting piece or hinged with the second connecting piece; or

[0014] The first panel is detachably connected with the first connecting piece or hinged with the first connecting piece, and detachably connected with the second connecting piece; or

[0015] The first panel is fixedly connected with the first connecting piece, and fixedly connected with the second connecting piece.

[0016] In the muffling assembly of the second possible implementation of the first aspect, one end of the first connecting piece is detachably connected with the first panel, and the other end opposite to the one end is connected with the second panel instead of the one end of the first connecting piece being connected with the first panel and the other end opposite to the one end being detachably connected with the second panel;

[0017] One end of the second connecting piece is detachably connected or hinged with the first panel, and the other end opposite to the one end is connected with the second panel instead of the one end of the second connecting piece being connected with the first panel and the other end opposite to the one end being detachably connected or hinged with the second panel.

[0018] In combination with the muffling assembly of the second possible implementation of the first aspect, in the muffling assembly of the third possible implementation of the first aspect, the second panel is detachably connected with the first connecting piece, detachably connected with the second connecting piece or hinged with the second connecting piece; or

[0019] The second panel is detachably connected with the first connecting piece or hinged with the first connecting piece, and detachably connected with the second connecting piece; or

[0020] The second panel is fixedly connected with the first connecting piece, and fixedly connected with the second connecting piece.

[0021] In the muffling assembly of the fourth possible implementation of the first aspect, the first connecting piece and the second connecting piece are of the same shape;

[0022] The first connecting piece is of a stepped structure at an end away from the first panel;

[0023] A vertical face of the stepped structure is of a height equal to a thickness of the second panel, a first step surface is arranged to abut against the second panel, a second step surface is provided with a rotating knob, and the first step surface is closer to the first panel than the second step surface;

[0024] The rotating knob is arranged to be rotatable to a position opposite to the first step surface.

[0025] In the muffling assembly of the fifth possible implementation of the first aspect, the first connecting piece is connected with the second panel by means of a screw;

[0026] The second connecting piece is connected with the second panel by means of a hinge structure.

[0027] In the sixth possible implementation of the muffling assembly of the first aspect, the distance between the first panel and the second panel is less than or equal to 50 mm.

[0028] In the seventh possible implementation of the muffling assembly of the first aspect, the thickness of the first panel is greater than 1 mm.

[0029] The perforation rate of the first panel is less than 0.5%.

[0030] The hole diameter of the through hole is less than 0.5 mm.

[0031] In the eighth possible implementation of the muffling assembly of the first aspect, the muffling assembly further comprises:

[0032] The partition plate is fixedly connected to one end of the first panel and abuts against the second panel at the opposite end.

[0033] The partition plate divides the cavity into a plurality of cuboid spaces.

[0034] The second aspect of the present application provides a muffler, comprising:

[0035] The first enclosure, the second enclosure and the muffling assembly of any one of claims 1 to 9;

[0036] The first enclosure, the second enclosure and the muffling assembly enclose an air passage.

[0037] The air inlet of the air passage is located between the first enclosure and the second enclosure, and the air outlet is located between the muffling assembly and the second enclosure.

[0038] The first panel is opposite to the air inlet.

[0039] From the above technical solutions, the present application has the following advantages:

[0040] The muffling assembly provided by the application is provided with a first panel, a second panel, a first connecting piece and a second connecting piece; the first panel and the second panel made of transparent material are spaced apart; the first panel is provided with a plurality of through holes extending in the direction from the first panel to the second panel; the first connecting piece and the second connecting piece are spaced apart; one end of the first connecting piece is connected with the first panel, and the opposite end is detachably connected with the second panel; one end of the second connecting piece is connected with the first panel, and the opposite end is detachably connected with or hinged to the second panel; the first panel, the second panel, the first connecting piece and the second connecting piece enclose a cuboid-shaped cavity. By setting the second panel to be detachably connected with the first connecting piece and the second connecting piece or hinged to the second connecting piece, when dust collection affects the muffling effect, the second panel can be detached or turned open to clean the inside of the muffling assembly, and the dust collection is cleaned away, so that the muffling effect is ensured not to be affected by cleaning the dust collection, which is easy to realize, has higher efficiency and lower cost. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0042] Figure 1 A structural schematic view of a muffling assembly provided by an embodiment of the application;

[0043] Figure 2 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0044] Figure 3 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0045] Figure 4 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0046] Figure 5 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0047] Figure 6 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0048] Figure 7 Another structural schematic view of a muffling assembly provided by an embodiment of the application;

[0049] Figure 8A structural schematic diagram of a muffler provided by an embodiment of the present application is shown in the figure;

[0050] Wherein:

[0051] 1, first panel 2, second panel 3, first connecting piece

[0052] 4, second connecting piece 5, cavity 6, first baffle

[0053] 7, second baffle 8, air inlet 9, air outlet

[0054] 10, third connecting piece 11, fourth connecting piece. DETAILED DESCRIPTION

[0055] The embodiments of the present application provide a muffling assembly and a muffler, and the technical problem to be solved is that the method for eliminating the influence of dust accumulation by replacing the muffler in the prior art is not only low in replacement efficiency, but also high in cost.

[0056] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, but not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0057] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0058] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or replaceably connected, or integrally connected, it can be mechanically connected, or electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] The existing muffler provided with a micro-perforated sound-absorbing plate has the following defects: with the increase of use time, fine dust in the air can enter the internal cavity through the empty barrels on the micro-perforated plate, and is adsorbed on the inner surface of the micro-perforated plate. Long-term accumulation can block the holes and reduce or even lose the sound-absorbing effect. The existing treatment method is to disassemble the original muffler as a whole and replace a new muffler. However, the disassembly and assembly of the muffler are difficult, resulting in low replacement efficiency and high cost.

[0060] Embodiment one

[0061] Please refer to Figures 1-8 The sound-absorbing assembly provided by the embodiment of the present application comprises:

[0062] The first panel 1, the second panel 2, the first connecting piece 3 and the second connecting piece 4; the first panel 1 and the second panel 2 made of transparent material are spaced apart and opposite to each other; the first panel 1 is provided with a plurality of through holes, and the through holes extend in the direction from the first panel 1 to the second panel 2; the first connecting piece 3 and the second connecting piece 4 are spaced apart and opposite to each other; one end of the first connecting piece 3 is connected with the first panel 1, and the opposite end is detachably connected with the second panel 2; one end of the second connecting piece 4 is connected with the first panel 1, and the opposite end is detachably connected or hinged with the second panel 2; the first panel 1, the second panel 2, the first connecting piece 3 and the second connecting piece 4 enclose a cavity 5 in the shape of a rectangular parallelepiped. For the convenience of description, the scheme described in this paragraph is defined as the basic scheme.

[0063] It should be noted that:

[0064] The first panel 1 is a flat structure supported by transparent plastic material, and the through holes are uniformly distributed thereon. The size and shape of each through hole are completely the same, and the hole depth of the through hole is equal to the thickness of the first panel 1. When the air containing noise flows to the first panel, the sound wave is incident on the first panel 1, and under the excitation action of the sound wave, the air in the through hole and the air near the through hole vibrate back and forth. The friction damping during the vibration converts part of the sound energy into heat energy and consumes it, thereby reducing the noise and achieving the purpose of sound absorption. When the frequency of the sound wave is the same as the natural frequency of the cavity 5, resonance occurs, and the amplitude and vibration speed of the reciprocating air vibration reach the maximum value. At this time, the sound energy consumed is the most, and the sound-absorbing volume is the largest.

[0065] The second panel 2 is a flat structure made of transparent material, which can be organic glass, polycarbonate, polyester resin or glass. It is used to enclose the cuboid-shaped cavity 5. One end of the second panel 2 is detachably connected to the first connecting piece 3, and the opposite end is detachably connected or hinged to the second connecting piece 4. When the two ends of the second panel 2 are detachably connected to the first connecting piece 3 and the second connecting piece 4 respectively, the second panel 2 can be completely detached. When one end of the second panel 2 is detachably connected to the first connecting piece 3 and the other end is hinged to the second connecting piece 4, the second panel 2 can be opened by rotating. Both connection methods can expose the inner surface of the first panel 1 when needed, so that dust can be cleaned and the through hole can be kept unobstructed, thereby ensuring that the sound attenuation effect is not affected. The detachable connection method is not limited here, but it must have sufficient connection stability to ensure that the second panel 2 does not separate from the through hole due to the inflow of air, and it must also have high disassembly efficiency, such as screw connection, magnetic attraction, elastic buckle, plug-in connection, etc.

[0066] The first connecting piece 3 and the second connecting piece 4 are used to enclose the cavity 5 and can be made of glass or metal material. The shape is not limited and can provide sufficient connection position for the second panel 2.

[0067] The beneficial effects of the embodiment include:

[0068] By setting the second panel 2 to be detachably connected to the first connecting piece 3 and detachably connected or hinged to the second connecting piece 4, when the dust affects the sound attenuation effect, the second panel 2 can be detached or opened by rotating to clean the inside of the sound attenuation assembly, thereby ensuring that the sound attenuation effect is not affected by cleaning the dust. This is easy to implement and has higher efficiency and lower cost.

[0069] The first panel 1 and the connecting piece have multiple connection methods: first, the first panel 1 is detachably connected to the first connecting piece 3, and the first panel 1 is detachably connected or hinged to the second connecting piece 4. When the first panel 1 is detachably connected to the second connecting piece 4, the first panel 1 can be detached to expose the cavity 5, thereby allowing dust to be cleaned. Please refer to Figure 7 When the first panel 1 is hinged to the second connecting piece 4, the first panel 1 can be opened by rotating to expose the cavity 5, thereby allowing dust to be cleaned. This connection method, combined with the second panel 2 being hinged to the second connecting piece 4, can open the first panel 1 and / or the second panel 2 by rotating. The opening direction of the first panel 1 and the second panel 2 is opposite. Second, the first panel 1 is detachably connected or hinged to the first connecting piece 3, and is detachably connected to the second connecting piece 4. This connection method is basically the same as the first connection method, with the difference being that when the second panel 2 is hinged to the second connecting piece 4, the opening direction of the first panel 1 and the second panel 2 is the same. Third, please refer toFigures 3-6 The first panel 1 is fixedly connected to the first connector 3 and the second connector 4, meaning that dust collection and cleaning can only be performed by disassembling or rotating the second panel 2 to open the cavity 5. The first connector 3 and the second connector 4 are connected by the third connector 10 and the fourth connector 11, forming a square frame structure. A suitable connection method can be selected according to the actual situation.

[0070] Alternative to the basic solution: Replace "one end of the first connector 3 is detachably connected to the first panel 1, and the other end is detachably connected to the second panel 2" in the basic solution with "one end of the first connector 3 is detachably connected to the first panel 1, and the other end is connected to the second panel 2"; replace "one end of the second connector 4 is detachably connected to the first panel 1, and the other end is detachably connected to the second panel 2" in the basic solution with "one end of the second connector 4 is detachably connected to the first panel 1, and the other end is detachably connected to the second panel 2". That is, the connection method between the first panel 1 and the second panel 2 and the connectors (first connector 3 and second connector 4) is swapped, changing the second panel 2 to be detachably or rotatably openable to the first panel 1.

[0071] In alternative solutions, the second panel 2 can be connected to the connector in several ways: First, the second panel 2 is detachably connected to the first connector 3; second, the second panel 2 is detachably connected to the second connector 4 or hinged. When the second panel 2 and the second connector 4 are detachably connected, the two panels can be disassembled to expose the cavity 5, allowing for dust collection and cleaning. Please refer to [link to relevant documentation]. Figure 7 There are three connection methods: First, when the second panel 2 is hinged to the second connecting member 4, the second panel 2 can be rotated open to expose the cavity 5 for dust collection and cleaning. In this connection method, when the first panel 1 is hinged to the second connecting member 4, the first panel 1 and / or the second panel 2 can be rotated open, with the rotation directions of the first panel 1 and the second panel 2 being opposite. Second, the second panel 2 is detachably connected to or hinged to the first connecting member 3, and detachably connected to the second connecting member 4. This connection method is basically the same as the first method, except that when the first panel 1 and the second connecting member 4 are hinged, the rotation directions of the first panel 1 and the second panel 2 are the same. Third, the second panel 2 is fixedly connected to both the first connecting member 3 and the second connecting member 4, meaning that dust collection and cleaning can only be performed by disassembling or rotating the first panel 1 to open the cavity 5. The appropriate connection method can be selected based on the actual situation.

[0072] The following descriptions are based on the basic scheme, and the preferred implementation methods can be adapted to alternative schemes based on common sense.

[0073] The second panel 2 and the first connecting piece 3 and the second connecting piece 4 are in the same shape; the first connecting piece 3 is in a one-step ladder structure at the end far from the first panel 1; the height of the vertical surface of the ladder structure is equal to the thickness of the second panel 2, the first step is used to abut against the second panel 2, the second step is provided with a rotating knob, and the first step is closer to the first panel 1 than the second step; the movable end of the rotating knob can be turned into a position opposite to the first step. More specifically, the first step on the first connecting piece 3 is located at the side close to the second connecting piece 4, and the first step on the second connecting piece 4 is located at the side close to the first connecting piece 3. In this way, after the opposite sides of one of the largest surfaces of the second panel 2 are connected with the first step on the first connecting piece 3 and the first step on the second connecting piece 4 respectively, the other largest surface of the second panel 2 is flush with the second step on the first connecting piece 3 and the second step on the second connecting piece 4, at this time, the rotating knob can be turned to make the movable end of the rotating knob turn into a position opposite to the first step, and abut against the largest surface of the second panel 2 far from the first panel 1, so as to press the second panel 2 tightly, when it is needed to clean the dust, the movable end of the rotating knob is turned into a position opposite to the second step, and the rotating knob is released from the limiting of the second panel 2, so that the second panel 2 can be detached. It should be noted that a plurality of rotating knobs can be arranged on the first connecting piece 3 and the second connecting piece 4 at the same time, and the rotating knobs on the first connecting piece 3 and the second connecting piece 4 can be arranged in one-to-one correspondence in order to make the second panel 2 bear force evenly.

[0074] For example, the rotating knob comprises a screw and a rectangular sheet, the screw is provided with a smooth surface at a position close to the head, and the rectangular sheet is provided with a connecting through hole, the screw is screwed into the second step through the connecting through hole, and then the rectangular sheet is abutted against the second step.

[0075] The second panel 2 and the first connecting piece 3 and the second connecting piece 4 are in the same shape; the first connecting piece 3 is in a one-step ladder structure at the end far from the first panel 1; the height of the vertical surface of the ladder structure is equal to the thickness of the second panel 2, the first step is used to abut against the second panel 2, the second step is provided with a rotating knob, and the first step is closer to the first panel 1 than the second step; the movable end of the rotating knob can be turned into a position opposite to the first step. More specifically, the first step on the first connecting piece 3 is located at the side close to the second connecting piece 4, and the first step on the second connecting piece 4 is located at the side close to the first connecting piece 3. In this way, after the opposite sides of one of the largest surfaces of the second panel 2 are connected with the first step on the first connecting piece 3 and the first step on the second connecting piece 4 respectively, the other largest surface of the second panel 2 is flush with the second step on the first connecting piece 3 and the second step on the second connecting piece 4, at this time, the rotating knob can be turned to make the movable end of the rotating knob turn into a position opposite to the first step, and abut against the largest surface of the second panel 2 far from the first panel 1, so as to press the second panel 2 tightly, when it is needed to clean the dust, the movable end of the rotating knob is turned into a position opposite to the second step, and the rotating knob is released from the limiting of the second panel 2, so that the second panel 2 can be detached. It should be noted that a plurality of rotating knobs can be arranged on the first connecting piece 3 and the second connecting piece 4 at the same time, and the rotating knobs on the first connecting piece 3 and the second connecting piece 4 can be arranged in one-to-one correspondence in order to make the second panel 2 bear force evenly.

[0076] The preferred size of the cavity 5: the distance between the first panel 1 and the second panel 2 is less than or equal to 50mm. When the distance between the first panel 1 and the second panel 2 is 30mm, 50% of the sound energy in the frequency band of 315HZ to 1250HZ can be absorbed, and when the distance between the first panel 1 and the second panel 2 is 50mm, 50% of the sound energy in the frequency band of 200HZ to 1000HZ can be absorbed, and more than 50% of the sound absorption performance of the middle and low frequencies can be achieved while reducing the depth of the cavity 5.

[0077] The preferred embodiment of the first panel 1: the thickness of the first panel 1 is greater than 1mm; the perforation rate of the first panel 1 is less than 0.5%; the hole diameter of the through hole is less than 0.5mm.

[0078] Optimization: when the volume of the cavity 5 is large, only the first connecting piece 3 and the second connecting piece 4 provide support for the first panel 1 and the second panel 2, and the structural stability of the sound absorption assembly is poor, in order to solve this problem, a partition plate is added to the sound absorption assembly, one end of the partition plate is fixedly connected with the first panel 1, and the opposite end is abutted with the second panel 2; the partition plate separates the cavity 5 into multiple cuboid spaces. By connecting the first panel 1 and the second panel 2 through the partition plate, the structural stability of the sound absorption assembly can be further improved.

[0079] Further optimization: the partition plate is made of transparent sound-absorbing material, so that the structural stability is improved without weakening the light transmission of the sound absorption assembly, and the partition plate also has a sound absorption effect, further enhancing the sound absorption effect of the sound absorption assembly.

[0080] Optimization: the sound absorption assembly is also provided with a lighting device arranged in the cavity 5. In this way, the sound absorption assembly not only has a sound absorption function, but also has a lighting function, and is more practical.

[0081] Example two

[0082] Please refer to Figures 1-8 The sound absorber provided in the embodiment of the application comprises a first enclosing plate 6, a second enclosing plate 7 and a sound absorption assembly; the first enclosing plate 6, the second enclosing plate 7 and the sound absorption assembly enclose an air passage; the air inlet 8 of the air passage is located between the first enclosing plate 6 and the second enclosing plate 7, and the air outlet 9 is located between the sound absorption assembly and the second enclosing plate 7; the first panel 1 is opposite to the air inlet 8. The specific structure of the sound absorption assembly is referred to the first embodiment, and since the sound absorber adopts all the technical solutions in the first embodiment, it at least has the beneficial effects brought by the technical solutions in the first embodiment, which will not be repeated here.

[0083] Exemplary: as Figure 8As shown, the first baffle 6 is a concave plate with two protrusions extending to the right; the second baffle 7 is an L-shaped plate with a longer right-angled plate extending left and right and a shorter right-angled plate extending up and down, and the longer right-angled plate is located above the shorter right-angled plate; the left end of the longer right-angled plate is opposite to the upper protrusion of the first baffle 6, and the air inlet 8 is enclosed; the first panel 1 and the second panel 2 of the muffler extend left and right, the left end of the second panel 2 is aligned and connected with the lower protrusion of the first baffle 6, and the left surface of the first connecting piece 3 is connected with the lower end of the concave part of the first baffle 6; the right end of the second panel 2 is opposite to the lower end of the shorter right-angled plate, and the air outlet 9 is enclosed; the upper surface of the first panel 1 is opposite to the left side of the longer right-angled plate, and the middle area of the upper surface of the first panel 1 is opposite to the air inlet 8.

[0084] The muffler provided in the embodiment is suitable for various application scenarios:

[0085] Firstly, the muffler can be fixed or moved in front of or adjacent to the openable outer window, the muffler can reduce the noise from the outdoor to the indoor, and in combination with the glass window and the door, a door and window system with natural ventilation and low-frequency noise reduction function is formed, which can reduce traffic noise, industrial noise and other types of low-frequency noise, while maintaining transparency and natural ventilation.

[0086] Secondly, the muffler is applied to the outer wall of a building, the thickness of the first panel 1 of the muffler is 1.0 mm, the distance between the second panel 2 and the first panel 1 is 50 mm, the hole diameter of the through hole of the first panel 1 is 0.5 mm, the perforation rate of the first panel 1 is 0.5%, and a plurality of partitions supported by the sound-absorbing material of the head face are arranged between the first panel 1 and the second panel 2, an opening of 1385mm*870mm is formed on the outer wall of the building, and the muffler is fixed in the opening and integrated with the outer wall of the building as a unified and coordinated organic whole. The muffler can reduce the noise from the outdoor to the indoor, while maintaining transparency and natural ventilation, when the window is closed, the muffler can provide natural ventilation for the room while reducing noise propagation, the built-in partition can enhance the sound absorption effect and structural stability, and a valve can be additionally installed at the air inlet or air outlet of the muffler to prevent rainwater from seeping in.

[0087] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

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The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application relates to a sound-absorbing assembly. The application 7. A sound attenuation assembly according to any one of claims 1 to 6, wherein: the first panel is spaced apart from the second panel by a distance of less than or equal to 50mm.

8. A sound attenuation assembly according to claim 7, wherein: the first panel has a thickness of greater than 1mm; the first panel has a perforation rate of less than 0.5%; the through holes have a hole diameter of less than 0.5mm.

9. A muffler characterized by comprising: a first surround panel, a second surround panel and a sound attenuation assembly according to any one of claims 1 to 8; the first surround panel, the second surround panel and the sound attenuation assembly enclosing an air passage; the air passage having an air inlet between the first surround panel and the second surround panel and an air outlet between the sound attenuation assembly and the second surround panel; the first panel being opposite the air inlet.

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