Array type silencer with special-shaped structure

Abstract

A special-shaped structure array type silencer comprises a plurality of special-shaped structure silencing unit cells arranged in an array mode, each special-shaped structure silencing unit cell comprises a silencing body, and each silencing body comprises a middle body and a plurality of peripheral bodies arranged on the periphery of the middle body in a surrounding mode and connected with the middle body. A shell of the middle body and a shell of the peripheral body are perforated plates, and sound absorption materials are filled in the shell. Under the same ventilation rate, the section shape of the special-shaped unit cell not only guarantees the silencing effect, but also increases the contact area of silencing materials. Under the condition of the same effective length of the silencing unit cells, the section perimeter of the silencing material is increased by the section shape of the special-shaped unit cells, so that the absorption area of the material is increased, and the full-band silencing performance is improved; under the condition of the same ventilation rate, the space between the flow channels can be reduced, the high-frequency cut-off frequency is improved, and the high-frequency noise elimination performance is improved.

Description

Technical Field

[0001] The utility model relates to a muffler device, in particular to an array type muffler with a special-shaped structure. Background Art

[0002] Large ventilation equipment provides a large amount of air flow when in operation. At the same time, the noise generated by the equipment is radiated to the acoustic environment functional area along the air flow channel, causing noise interference to the acoustic environment functional area. At this time, it is necessary to design a muffler that can meet both the large flow channel and the noise reduction. Therefore, an array muffler was created. The array muffler is composed of multiple unit cells arranged in parallel and vertical directions. The cross-sectional shape of the unit cell is generally square, and the space between the unit cells is the noise reduction channel. Under the same ventilation rate, the larger the unit cell, the greater the demand for the noise reduction channel, but if the unit cell is too large, the high-frequency noise reduction effect will be reduced.

[0003] It should be noted that the information disclosed in the above background technology section is only used for understanding the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Utility Model Content

[0004] The main purpose of the utility model is to overcome the defects of the above-mentioned background technology and provide a special-shaped structure array type silencer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A special-shaped structure array silencer comprises a plurality of special-shaped structure silencer cells arranged in an array, wherein the special-shaped structure silencer cells comprise a silencer body, wherein the silencer body comprises an intermediate body and a plurality of peripheral bodies arranged around the intermediate body and connected to the intermediate body, wherein the outer shells of the intermediate body and the peripheral bodies are perforated plates, and the inner shells are filled with sound-absorbing materials.

[0007] Further:

[0008] The cross section of the intermediate body is square as a whole, and the four peripheral bodies are connected to each other at the four corners of the cross section of the intermediate body.

[0009] The front end of the intermediate body is a plane, and the front end of the peripheral body is a gradually shrinking arc top.

[0010] The special-shaped structure muffler unit cell also includes a flow guide cover arranged at one end or both ends of the muffler body.

[0011] It also includes an outer frame and support rods fixed on the air guide covers at both ends of the muffler, and the support rods are fixed on the outer frame.

[0012] The sound absorbing material is a resistive sound absorbing material.

[0013] The outer shells of the intermediate body and the peripheral body are rectangular parallelepiped as a whole.

[0014] The sound-absorbing holes of the perforated plate are arranged on four surfaces of the shell. The holes of the perforated plate have a single aperture or a combination of multiple apertures, and the preferred aperture range is 0.1 mm to 6 mm.

[0015] The cross-sectional side length of the shell is 50 to 500 mm, and the length of the muffler is 100 to 10000 mm.

[0016] The plurality of special-shaped noise-absorbing unit cells are arranged in parallel along the airflow direction.

[0017] The utility model has the following beneficial effects:

[0018] The utility model provides an irregular structure array type silencer comprising a plurality of irregular structure silencer cells arranged in an array, wherein the silencer body of the irregular structure silencer cell comprises an intermediate body and a plurality of peripheral bodies arranged around the intermediate body and connected to the intermediate body, wherein the outer shells of the intermediate body and the peripheral bodies are perforated plates, and the outer shells are filled with sound-absorbing material. Through this design, compared with the existing square unit cell cross-sectional shape, the irregular unit cell cross-sectional shape of the utility model, under the same ventilation rate, not only ensures the silencer effect, but also increases the contact area of ​​the silencer material.

[0019] Under the condition of the same effective length of the silencer unit cell, the cross-sectional shape of the special-shaped unit cell of the utility model increases the cross-sectional circumference of the silencer material, thereby increasing the absorption area of ​​the material and improving the silencer performance in the full frequency band; under the condition of the same ventilation rate, it can reduce the spacing between the flow channels, increase the high-frequency cutoff frequency, and improve the high-frequency silencer performance, which has high practical value and application prospects.

[0020] Other beneficial effects of the embodiments of the present invention will be further described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of a special-shaped structure array type muffler according to an embodiment of the utility model;

[0022] Figure 2 This is a front view of a special-shaped structure array type muffler according to an embodiment of the utility model;

[0023] Figure 3 1. It is a top view of a special-shaped structure array type muffler according to an embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the installation of a special-shaped array muffler according to an embodiment of the utility model;

[0025] Figure 5 This is a front view of the installation of a special-shaped structure array type muffler of an embodiment of the utility model;

[0026] Figure 6 It is a unit cell diagram of a special-shaped structure array type silencer according to an embodiment of the utility model.

[0027] In the figure: 1- peripheral body, 2- intermediate body, 3- supporting rod. DETAILED DESCRIPTION

[0028] The following is a detailed description of the implementation of the utility model. It should be emphasized that the following description is only exemplary and is not intended to limit the scope and application of the utility model.

[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing as well as for coupling or communication.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] See also Figures 1 to 6 The embodiment of the utility model provides a special-shaped structure array silencer, including a plurality of special-shaped structure silencer cells arranged in an array, wherein the special-shaped structure silencer cell includes a silencer body, wherein the silencer body includes an intermediate body 2 and a plurality of peripheral bodies 1 arranged around and connected to the intermediate body 2, so that the entire cell is a special-shaped structure, wherein the shells of the intermediate body 2 and the peripheral bodies 1 are perforated plates, and the shells are filled with sound-absorbing materials. The material of the perforated plate can be galvanized steel plate, aluminum alloy plate or stainless steel, and the utility model does not limit it.

[0033] In a preferred embodiment, the cross section of the intermediate body 2 is square as a whole, and the four peripheral bodies 1 are connected to each other at the four corners of the cross section of the intermediate body 2 .

[0034] In a preferred embodiment, the front end of the intermediate body 2 is a plane, and the front end of the peripheral body 1 is a tapered arc-shaped top. The smooth transition of the arc-shaped top is conducive to reducing the local pressure loss of the muffler and facilitating the passage of the fluid.

[0035] In a preferred embodiment, the special-shaped structure muffler unit cell further includes a flow guide cover arranged at one end or both ends of the muffler body. The pressure loss of the structure can be reduced by installing the flow guide cover.

[0036] In a preferred embodiment, the special-shaped structure array type silencer further includes an outer frame (not shown) and support rods 3 fixed to the air guide covers at both ends of the silencer body, and the support rods 3 are fixed to the outer frame.

[0037] In a preferred embodiment, the sound absorbing material is a resistive sound absorbing material.

[0038] In a preferred embodiment, the outer shells of the intermediate body 2 and the peripheral body 1 are rectangular parallelepiped as a whole. More preferably, the cross-sectional side length of the outer shell is 50-500 mm, and the length of the muffler is 100-10000 mm.

[0039] In a preferred embodiment, the muffler holes of the perforated plate are arranged on four surfaces of the shell. The holes of the perforated plate have a single hole diameter or a combination of multiple hole diameters, and the preferred hole diameter range is 0.1 mm to 6 mm.

[0040] In a preferred embodiment, the plurality of special-shaped noise-absorbing cells are arranged in parallel along the airflow direction.

[0041] The specific embodiments of the present utility model are further described below.

[0042] like Figure 1 to Figure 6 As shown, a special-shaped structure array type silencer is provided, which may include a rectangular outer frame (not shown) and special-shaped structure silencer cells fixed in the outer frame and arranged in an array. Adjacent silencer cells are connected by support rods 3, and these support rods 3 are fixed on the air guide covers on both sides of the silencer cells. Each silencer cell includes a special-shaped silencer body, a silencer material filled in the silencer body, and air guide covers fixed to both sides of the silencer body. Figure 4-5 It is a schematic diagram of the installation of a special-shaped silencer. The air deflector of the special-shaped silencer unit cell is fixed on the support rod 3 by bolts, and the support rod 3 is fixed on the outer frame by bolts.

[0043] like Figure 1 to Figure 6As shown, the muffler includes an intermediate body 2 and a plurality of peripheral bodies 1 arranged around and connected to the intermediate body 2, so that the whole unit cell has a special-shaped structure. The special-shaped unit cell increases the contact area between the sound wave and the muffler material. The shells of the intermediate body 2 and the peripheral body 1 are provided with muffler holes, and these muffler holes are evenly arranged on the four faces of the shell. The holes of the perforated plate are a combination of one aperture or multiple apertures, and the aperture range is 0.1mm to 6mm. The muffler is composed of a guide cover fixed on both sides. The shell of the muffler is a perforated plate, and the inside is filled with resistive sound-absorbing material. The special-shaped muffler unit cell is fixed to the support rod in the ventilation duct through the guide cover, and is arranged in parallel along the airflow direction. The unit cell spacing can be flexibly adjusted according to the requirements of the muffler volume and ventilation rate. The pressure loss of the structure can be reduced by installing the guide cover. The side length of the shell section of the unit cell is 50 to 500mm, and the length is 100 to 10000mm. The material of the perforated plate can be galvanized steel plate, aluminum alloy plate or stainless steel.

[0044] The special-shaped structure array silencer of the utility model has a unique design that significantly improves the sound elimination effect while maintaining an efficient ventilation rate. Its technical advantages are mainly reflected in the following aspects: First, compared with the traditional structure, the design of the special-shaped unit cell cross-section increases the contact area between the silencer material and the airflow without significantly increasing the ventilation resistance, thereby improving the sound absorption efficiency of the material and enhancing the sound elimination performance of the full frequency band. Secondly, this design allows the flow channel spacing to be reduced while maintaining the same ventilation rate, improves the high-frequency cutoff frequency, and enhances the absorption capacity of high-frequency noise. In addition, the resistive sound-absorbing material filled between the outer shell and the inner shell of the silencer, as well as the perforated plate design, further optimizes the sound elimination performance. Overall, this silencer exhibits excellent sound elimination characteristics due to its optimized configuration of structure and materials, and has high practical value and application prospects for large ventilation systems that need to control noise.

[0045] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For technicians in the technical field to which the present invention belongs, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A special-shaped structure array muffler, characterized in that: It comprises a plurality of special-shaped silencer cells arranged in an array, wherein the special-shaped silencer cells comprise a silencer body, the silencer body comprises an intermediate body and a plurality of peripheral bodies arranged around the intermediate body and connected to the intermediate body, the outer shells of the intermediate body and the peripheral bodies are perforated plates, and the inner shells are filled with sound-absorbing materials.

2. The special-shaped structure array muffler according to claim 1, characterized in that: The cross section of the intermediate body is square as a whole, and the four peripheral bodies are connected to each other at the four corners of the cross section of the intermediate body.

3. The special-shaped structure array muffler according to claim 2, characterized in that: The front end of the intermediate body is a plane, and the front end of the peripheral body is a gradually shrinking arc top.

4. The special-shaped structure array muffler according to any one of claims 1 to 3, characterized in that: The special-shaped structure muffler unit cell also includes a flow guide cover arranged at one end or both ends of the muffler body.

5. The special-shaped structure array muffler according to claim 4, characterized in that: It also includes an outer frame and support rods fixed on the air guide covers at both ends of the muffler, and the support rods are fixed on the outer frame.

6. The special-shaped structure array muffler according to any one of claims 1 to 3, characterized in that: The sound absorbing material is a resistive sound absorbing material.

7. The special-shaped structure array muffler according to any one of claims 1 to 3, characterized in that: The shells of the intermediate body and the peripheral body are rectangular parallelepiped as a whole.

8. The special-shaped structure array muffler according to claim 7, characterized in that: The sound-absorbing holes of the perforated plate are arranged on four surfaces of the shell; the holes of the perforated plate have a single aperture or a combination of multiple apertures, and the aperture range is 0.1 mm to 6 mm.

9. The special-shaped structure array muffler according to claim 7, characterized in that: The cross-sectional side length of the shell is 50 to 500 mm, and the length of the muffler is 100 to 10000 mm.

10. The special-shaped structure array muffler according to any one of claims 1 to 3, characterized in that: The plurality of special-shaped noise-absorbing cells are arranged in parallel along the airflow direction.

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