Array type silencer with concentric-square-shaped structure
By using the design of a refusal structure and obstructive sound absorbing material in the muffler, the problem of difficulty in taking into account the ventilation rate and high frequency muffling effect of the existing technology, and achieved a more efficient full -frequency segment muffle performance.
Patent Information
- Application Number
- CN202421154842.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-24
AI Technical Summary
When existing array mufflers improve the high-frequency muffler effect, it is difficult to take into account the ventilation rate and muffler effect of the large channel, and excessive single cells will reduce the high-frequency muffler effect.
The back -shaped structure array muffler is adopted, and the intraocular absorbing material is set up between the shell of the sound of the sound of the sound, and the cross -section of the sound of the mule is designed as a reflection, which increases the contact area of the sound wave and sound absorption material.
Under the same ventilation rate, the acoustic performance of the full -frequency band is improved, the high -frequency cut -off frequency and high -frequency muffle performance are enhanced, and the distance between the flow channel is reduced to improve the sound anti -sounding effect.
Smart Images
Figure CN222417912U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a muffler device, in particular to a zigzag structure array type muffler. 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 zigzag structure array type muffler.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] A zigzag structure array silencer comprises a plurality of zigzag structure silencer cells arranged in an array, the zigzag structure silencer cells comprise a silencer body, the silencer body comprises an outer shell, an inner shell and a sound absorbing material arranged between the outer shell and the inner shell, and the cross section of the silencer body is zigzag.
[0007] Further:
[0008] The shell is a perforated plate, and the holes of the perforated plate have a single hole diameter or a combination of multiple hole diameters, and the hole diameter range is 0.1 mm to 6 mm.
[0009] The inner shell is a perforated plate or a supporting frame, wherein 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.
[0010] The zigzag structure silencer unit cell also includes a flow guide cover arranged at one end or both ends of the silencer body.
[0011] A perforated plate is arranged in the middle opening of the air deflector or in the middle of the air deflector.
[0012] 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.
[0013] The sound absorbing material is a resistive sound absorbing material.
[0014] The muffler is a rectangular parallelepiped.
[0015] The cross-sectional side length of the outer shell is 50 to 550 mm, the cross-sectional side length of the inner shell is 10 to 350 mm, and the length of the muffler is 100 to 10000 mm.
[0016] The plurality of zigzag structure silencer cells are arranged in parallel along the airflow direction.
[0017] The utility model has the following beneficial effects:
[0018] The zigzag structure array silencer provided by the utility model includes a plurality of zigzag structure silencer cells arranged in an array, the silencer body of the zigzag structure silencer cell includes an outer shell, an inner shell and a sound-absorbing material arranged between the outer shell and the inner shell, and the cross-section of the silencer body is zigzag. Through this design, compared with the existing square cell cross-section shape, the zigzag cell cross-section shape of the utility model not only ensures the silencer effect under the same ventilation rate, but also increases the contact area of the silencer material.
[0019] Under the condition of the same effective length of the silencing unit cell, the increased cross-section of the silencing material in the utility model increases the sound absorption area of the material and improves the silencing performance of the entire frequency band; under the condition of the same ventilation rate, the spacing between the flow channels can be reduced, the high-frequency cutoff frequency can be increased, and the high-frequency silencing performance can be improved, 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 zigzag structure array type muffler according to an embodiment of the utility model;
[0022] Figure 2 This is a front view of the zigzag structure array type muffler of the embodiment of the utility model;
[0023] Figure 3 1. It is a top view of the zigzag structure array type muffler of the embodiment of the utility model;
[0024] Figure 4 This is a schematic diagram of the installation of a zigzag structure array type muffler according to an embodiment of the utility model;
[0025] Figure 5 This is a front view of the installation of the zigzag structure array type muffler of the embodiment of the utility model;
[0026] Figure 6It is a unit cell diagram of a zigzag structure array type silencer according to an embodiment of the utility model.
[0027] In the figure: 1-outer shell, 2-inner shell, 3-air guide covers on both sides of the muffler with a round structure, 4-support 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 An embodiment of the utility model provides a zigzag structure array silencer, comprising a plurality of zigzag structure silencer cells arranged in an array, wherein the zigzag structure silencer cell comprises a silencer body, wherein the silencer body comprises an outer shell 1, an inner shell 2 and a sound-absorbing material arranged between the outer shell 1 and the inner shell 2, and the cross-section of the silencer body is zigzag.
[0033] In a preferred embodiment, the outer shell 1 is a perforated plate. The inner shell 2 is a perforated plate or a support frame. The perforated plate as the outer shell 1 is provided with silencer holes. When the silencer is a rectangular parallelepiped, the silencer holes can be provided on four faces of the outer shell 1. The holes of the perforated plate can be of one aperture or a combination of multiple apertures, and the aperture range is preferably 0.1 mm to 6 mm.
[0034] The inner shell 2 of the muffler can be a perforated plate or a support frame. The form of the support frame is not limited, and it can be a square tube, a round tube, an angle steel, etc. When the inner shell 2 adopts a perforated plate, the muffler holes can be set on the four faces of the inner shell 2. The holes of the perforated plate can be of one aperture or a combination of multiple apertures, and the aperture range is preferably 0.1 mm to 6 mm.
[0035] In a preferred embodiment, the meander structure silencer unit cell further includes a flow deflector 3 disposed at one end or both ends of the silencer. In one embodiment, the flow deflector 3 may be a flow deflector with a middle opening. In another embodiment, a perforated plate is disposed in the middle of the flow deflector 3.
[0036] In a preferred embodiment, the zigzag structure array silencer further comprises an outer frame (not shown) and support rods 4 fixed to the air guide covers at both ends of the silencer, and the support rods 4 are fixed to the outer frame. Each support rod 4 connects a group of zigzag structure silencer cells together in the vertical direction.
[0037] In a preferred embodiment, the muffler is a cuboid. More preferably, the cross-sectional side length of the outer shell 1 is 50 to 550 mm, the cross-sectional side length of the inner shell 2 is 10 to 350 mm, and the length of the muffler is 100 to 10000 mm.
[0038] In a preferred embodiment, the plurality of zigzag structure silencer cells are arranged in parallel along the air flow direction in the ventilation duct.
[0039] In some embodiments, the sound absorbing material disposed between the outer shell 1 and the inner shell 2 is a resistive sound absorbing material.
[0040] The specific embodiments of the present utility model are further described below.
[0041] like Figure 1 to Figure 3 As shown, a muffler with a meander structure is provided. Figure 1 The zigzag structure silencer unit cell includes a silencer body and a guide cover 3. The silencer body has a zigzag cross section, the outer shell is a perforated plate 1, the inner shell is a perforated plate 2, and the outer shell and the inner shell are made of resistive sound absorbing material. The array silencer unit cells are arranged in parallel along the airflow direction, and the unit cell spacing can be flexibly adjusted according to the requirements of the sound attenuation and ventilation rate. The zigzag structure unit cell increases the contact area between the sound wave and the silencer material. Figure 4-5The schematic diagram of the installation of the zigzag structure silencer is shown in FIG. The air deflector 3 of the array silencer unit cell is fixedly mounted on the support rod 4 by bolts, and the support rod 4 is fixed on the outer frame by bolts.
[0042] like Figure 6 As shown in the figure, the unit cell of the zigzag structure silencer is composed of a silencer, a silencer material filled in the silencer, and a guide cover fixed on both sides of the silencer. The unit cell is in the shape of a Chinese character "Yu". The outer shell of the silencer is a perforated plate, and the inner shell can be a perforated plate or a support frame. The form of the support frame is not limited, and can be a square tube, a round tube, an angle steel, etc. The holes of the perforated plate are a combination of one aperture or multiple apertures, and the aperture range is 0.1mm to 6mm. Resistive sound-absorbing material is filled between the outer shell and the inner shell. The unit cell of the zigzag silencer is fixed to the support rod in the ventilation duct through the guide cover, and is arranged in parallel along the airflow direction. The spacing between the units can be flexibly adjusted according to the requirements of the silencer volume and ventilation rate. The pressure loss of the structure can be reduced by installing the guide cover. In the zigzag silencer, the side length of the outer shell section of the unit cell is 50 to 550mm, the side length of the inner shell section is 10 to 350mm, and the length is 100 to 10000mm. The perforated plate is made of galvanized steel plate, aluminum alloy plate or stainless steel.
[0043] The zigzag structure array silencer of the utility model significantly improves the sound elimination effect while maintaining an efficient ventilation rate through its unique design. Its technical advantages are mainly reflected in the following aspects: First, compared with the traditional square unit cell, the design of the zigzag unit cell cross-section increases the contact area between the silencer material and the airflow without 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 possible 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.
[0044] 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 ordinary technicians in the technical field to which the present invention belongs, they can also make several substitutions or modifications to the described implementations without departing from the concept of the present invention, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention.
Claims
1. A zigzag structure array muffler, characterized in that: It comprises a plurality of zigzag structure silencer cells arranged in an array, wherein the zigzag structure silencer cell comprises a silencer body, wherein the silencer body comprises an outer shell, an inner shell and a sound absorbing material arranged between the outer shell and the inner shell, and the cross section of the silencer body is zigzag.
2. The zigzag structure array muffler according to claim 1, characterized in that: The shell is a perforated plate, and the holes of the perforated plate have a single hole diameter or a combination of multiple hole diameters, and the hole diameter range is 0.1 mm to 6 mm.
3. The zigzag structure array muffler according to claim 1, characterized in that: The inner shell is a perforated plate or a supporting frame, wherein 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.
4. The zigzag structure array muffler according to any one of claims 1 to 3, characterized in that: The zigzag structure silencer unit cell also includes a flow guide cover arranged at one end or both ends of the silencer body.
5. The zigzag structure array muffler according to claim 4, characterized in that: A perforated plate is arranged in the middle opening of the air deflector or in the middle of the air deflector.
6. The zigzag 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.
7. The zigzag 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.
8. The zigzag structure array muffler according to any one of claims 1 to 3, characterized in that: The muffler is a rectangular parallelepiped.
9. The zigzag structure array muffler according to claim 8, characterized in that: The cross-sectional side length of the outer shell is 50 to 550 mm, the cross-sectional side length of the inner shell is 10 to 350 mm, and the length of the muffler is 100 to 10000 mm.
10. The zigzag structure array muffler according to any one of claims 1 to 3, characterized in that: The plurality of zigzag structure silencer cells are arranged in parallel along the airflow direction.