High-noise exhaust silencing device

Abstract

The utility model discloses a high-noise exhaust silencing device which comprises an outer shell, an inner shell, an inner shell and a silencer. An air outlet is formed in the upper portion of the outer shell, and an air inlet communicated with the air outlet is formed in the lower portion of the outer shell. The flow equalizing piece is arranged at the air inlet in the outer shell so as to divide the air flow blown into the outer shell through the air inlet; the silencing assembly is at least arranged at the middle position and / or the air outlet position in the outer shell so as to conduct silencing and noise reduction on the airflow blown into the outer shell through the flow equalizing piece; the ventilation silencer can solve the problem that a traditional ventilation silencer is difficult to eliminate and weaken noise generated under the condition of high air volume.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction equipment, in particular to a high-noise exhaust silencer. Background Art

[0002] At present, the noise generated in the ventilation system is generally reduced or eliminated by a silencer. The ventilation silencer generally includes a silencer body, an air flow channel and a sound-absorbing material. However, for the noise generated under some high air volume conditions in the ventilation system, a single air flow channel and a sound-absorbing material are difficult to eliminate the noise and cannot meet the requirements of noise elimination. Utility Model Content

[0003] In order to overcome the above disadvantages, the purpose of the utility model is to provide a high-noise exhaust silencer.

[0004] In order to achieve the above objectives, the technical solution adopted by the utility model includes:

[0005] An outer shell, wherein an air outlet is formed at an upper portion of the outer shell, and an air inlet communicated with the air outlet is formed at a lower portion of the outer shell;

[0006] A flow equalizer, which is arranged at the air inlet in the outer shell to divide the airflow blown into the outer shell through the air inlet;

[0007] A silencer assembly is disposed at least in the middle of the outer shell and / or at the air outlet to silence and reduce the noise of the airflow blown into the outer shell through the flow equalizer.

[0008] The present application arranges a silencer assembly between the air inlet and the air outlet in the outer shell to form multiple obstructions to the airflow blown in through the air inlet, thereby extending the flow path and flow duration of the airflow in the outer shell, and ensuring that the noise generated by the airflow can be effectively weakened and eliminated.

[0009] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the silencer assembly is at least one group of silencer modules arranged at the air outlet in the outer shell, and a flow gap is formed between the silencer module and the outer shell, or between adjacent silencer modules, and the silencer module can absorb and eliminate the noise generated by the airflow passing through the flow gap.

[0010] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the silencer module includes a perforated plate and a sound absorbing member arranged in the perforated plate.

[0011] In the preferred technical solution of the above-mentioned high-noise exhaust muffler, the orifice plate forms a flow-guiding structure at one end of the outer shell for receiving the airflow.

[0012] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the silencer assembly includes at least two vertical partitions arranged on both sides of the flow equalizer, a serpentine silencer channel is formed between adjacent vertical partitions, and a transverse partition for connecting the vertical partitions away from the side of the flow equalizer.

[0013] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, sound absorbing structures are arranged inside the vertical partitions and the transverse partitions.

[0014] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the silencer assembly includes at least two groups of silencer plate groups arranged from the air inlet toward the air outlet, each group of the silencer plate groups is composed of at least two groups of horizontal silencer plates, and air flow channels are formed between adjacent silencer plates. The silencer plates of adjacent silencer plate groups block the air flow channels formed by each other.

[0015] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the flow equalizing member is a silencer cover, the silencer cover covers the air inlet in the outer shell, and air holes are formed on the surface of the silencer cover.

[0016] In the preferred technical solution of the above-mentioned high-noise exhaust muffler, a rainproof cap for covering the air outlet is arranged on the top of the outer shell.

[0017] In the preferred technical solution of the above-mentioned high-noise exhaust silencer, the inner wall of the outer shell is sequentially provided with a sound insulation board, a sound absorbing structure and a sound-permeable board.

[0018] The beneficial effect of the utility model is that by arranging a flow equalizer to redistribute the airflow entering the outer shell, the consistency of the airflow flowing through each position of the silencer assembly is ensured, and at the same time, by means of the partitions, silencer plates and orifice plates arranged horizontally and vertically, the airflow path can be effectively extended, ensuring that the noise generated by the airflow by the silencer assembly is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional view of the utility model;

[0020] Figure 2 The internal structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 3 The internal structure of the utility model is shown in FIG. Figure 2 ;

[0022] In the figure: outer shell 1, air outlet 11, air inlet 12, flow equalizing member 2, silencer assembly 3, orifice plate 31, flow guide structure 311, flow gap 32, vertical partition 33, silencer channel 34, horizontal partition 35, silencer plate group 36, silencer plate 361, air flow channel 37, rain cap 4. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0024] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figures 1 to 3 As shown, the high-noise exhaust silencer of the utility model comprises: an outer shell 1, an air outlet 11 is formed at the upper position of the outer shell 1, and an air inlet 12 connected to the air outlet 11 is formed at the lower position; a flow equalizer 2, the flow equalizer 2 is arranged at the air inlet 12 in the outer shell 1 to divert the airflow blown into the outer shell 1 through the air inlet 12; a silencer assembly 3, the silencer assembly 3 is at least arranged at the middle position of the outer shell 1 and / or the air outlet 11 to silence and reduce the noise of the airflow blown into the outer shell 1 through the flow equalizer 2.

[0027] See also Figures 1 to 3The outer shell 1 is a hollow structure, and the interior of the outer shell 1 can be a square structure or a circular structure. The outer shell 1 has a first end and a second end opposite to each other, an air inlet 12 is provided on the first end, and an air outlet 11 is provided on the second end. A flow equalizer 2 is arranged at the air inlet 12 inside the outer shell 1 to divert the gas, and the diverted gas is discharged through the air outlet 11 after being silenced and reduced in noise by the silencer assembly 3 located in the middle of the outer shell 1 and / or the air outlet 11, thereby reducing wind noise; it should be noted that the silencer assembly 3 can perform multiple obstructions on the airflow blown in through the air inlet 12, so as to extend the flow path and flow duration of the airflow in the outer shell 1, and ensure that the noise generated by the airflow can be effectively weakened and eliminated.

[0028] In one or more embodiments, the silencer assembly 3 is at least one group of silencer modules arranged at the air outlet 11 in the outer shell 1, and a flow gap 32 is formed between the silencer module and the outer shell 1, or between adjacent silencer modules. The silencer module can absorb and eliminate the noise generated by the airflow passing through the flow gap 32; the silencer module includes a perforated plate 31 and a sound-absorbing component arranged in the perforated plate 31.

[0029] See also Figures 1 to 3 , multiple groups of orifice plates 31 are evenly arranged at the air outlet 11 of the outer shell 1, and flow gaps 32 are formed between adjacent orifice plates 31 and between the orifice plates 31 and the outer shell 1; the orifice plates 31 have multiple through holes so that the sound absorbing components in the orifice plates 31 can be partially exposed, so that the sound absorbing components can eliminate the noise generated by the airflow passing through the flow gaps 32. By configuring multiple groups of orifice plates 31 to form a number of flow gaps 32, the airflow blown out through the air outlet 11 can be further subdivided, thereby ensuring the elimination of the noise generated by the airflow flow in this application and improving the noise reduction effect of this application. In a specific embodiment, the sound absorbing component can be 64 or 96K glass wool.

[0030] In one or more embodiments, the orifice plate 31 forms a flow guiding structure 311 at one end of the outer shell 1 for receiving the air flow. Figures 1 to 3 The orifice plate 31 forms a guide structure 311 at one end facing the air inlet 12; the guide structure 311 may be an arc, a pointed or a linear structure. The guide structure 311 is configured at one end of the orifice plate 31 facing the air inlet 12 to reduce the resistance of the airflow blowing toward the orifice plate 31, accelerate the airflow flow, and further reduce the wind noise.

[0031] In one or more embodiments, the silencer assembly 3 includes at least two vertical partitions 33 arranged on both sides of the flow equalizing member 2, a serpentine silencer channel 34 is formed between adjacent vertical partitions 33, and a horizontal partition 35 is included for connecting the vertical partitions 33 away from the side of the flow equalizing member 2; sound absorbing structures are arranged in the vertical partitions 33 and the horizontal partitions 35.

[0032] See also Figures 1 to 3 At least two vertical partitions 33 are arranged on both sides of the flow equalizer 2, and an S-shaped sound-absorbing channel 34 is formed between adjacent vertical partitions 33. Between the air inlet 12 and the air outlet 11, a transverse partition 35 connects and caps the vertical partitions 33 away from the air inlet 12, so that the airflow entering the outer shell 1 through the air inlet 12 and the flow equalizer 2 can pass through the S-shaped sound-absorbing channel 34 and then flow to the air outlet 11, so that the noise generated by the airflow can be absorbed and eliminated by the sound-absorbing structure in the transverse partition 35 and the vertical partition 33; in this way, the flow path and flow time of the airflow in the outer shell 1 can be extended, and the noise absorption effect of the sound-absorbing structure arranged in the transverse partition 35 and the vertical partition 33 can be guaranteed.

[0033] In a specific embodiment, the sound absorbing structure may be 64 or 96K glass wool.

[0034] In one or more embodiments, the muffler assembly 3 includes at least two groups of muffler plate groups 36 arranged from the air inlet 12 toward the air outlet 11, each group of muffler plate groups 36 is composed of at least two groups of horizontal muffler plates 361, and an air flow channel 37 is formed between adjacent muffler plates 361. The muffler plates 361 of adjacent muffler plate groups 36 block the air flow channels 37 formed by each other. In a specific embodiment, 64 or 96K glass wool is installed in each muffler plate 361.

[0035] See also Figures 1 to 3 , two groups of muffler plate groups 36 are arranged between the muffler module and the transverse partition 35. In a specific embodiment, a group of muffler plate groups 36 close to the transverse partition 35 has three muffler plates 361, the three muffler plates 361 are spaced apart from each other and arranged horizontally, and an airflow channel 37 is formed between adjacent muffler plates 361; a group of muffler plate groups 36 close to the muffler module has two muffler plates 361, the two muffler plates 361 are spaced apart from each other and arranged horizontally, and the two muffler plates 361 block the airflow channel 37 formed between the three muffler plates 361 in the airflow direction; through this arrangement, the flow path of the airflow in the outer shell 1 can be further extended, ensuring that the glass wool in each muffler plate 361 can eliminate the noise generated when the airflow flows, thereby ensuring the noise elimination effect of the present application.

[0036] In one or more embodiments, the flow equalizer 2 is a muffler, which covers the air inlet 12 in the outer shell 1, and pores are formed on the surface of the muffler. Through this arrangement, the airflow entering the outer shell 1 can be redistributed, ensuring the consistency of the airflow flowing through each position of the muffler component 3, and further improving the elimination of noise in the outer shell 1 by the present application.

[0037] In one or more embodiments, a rain cap 4 is disposed on the top of the outer shell 1 to cover the air outlet 11. This arrangement can reduce the possibility of rainwater entering the outer shell 1 and prolong the use effect of the present application.

[0038] In one or more embodiments, the inner wall of the outer shell 1 is sequentially provided with a sound insulation board, a sound absorbing structure and a sound-permeable board. The sound absorbing structure may be 64 or 96K glass wool, and a plurality of sound-permeable holes are formed on the sound-permeable board. When the airflow flows in the outer shell 1, the noise generated by the airflow is transmitted to the sound absorbing structure through the sound-permeable board and absorbed by it; the sound insulation board can further isolate the noise in the outer shell 1; the material of the sound insulation board may be calcium silicate board, glass magnesium board, wood wool board, gypsum board; the material of the outer shell 1 may be carbon steel, stainless steel, galvanized steel plate or aluminum alloy plate.

[0039] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A high noise exhaust muffler, characterized in that: include: An outer shell, wherein an air outlet is formed at an upper portion of the outer shell, and an air inlet communicated with the air outlet is formed at a lower portion of the outer shell; A flow equalizer, which is arranged at the air inlet in the outer shell to divide the airflow blown into the outer shell through the air inlet; A silencer assembly is disposed at least in the middle of the outer shell and / or at the air outlet to silence and reduce the noise of the airflow blown into the outer shell through the flow equalizer.

2. The high noise exhaust muffler device according to claim 1, characterized in that: The silencer assembly is at least one group of silencer modules arranged at the air outlet in the outer shell, and a flow gap is formed between the silencer module and the outer shell, or between adjacent silencer modules. The silencer module can absorb and eliminate the noise generated by the airflow passing through the flow gap.

3. The high noise exhaust muffler device according to claim 2, characterized in that: The muffler module includes a perforated plate and a sound absorbing member disposed in the perforated plate.

4. The high noise exhaust muffler device according to claim 3, characterized in that: The orifice plate forms a flow guide structure at one end of the outer shell for receiving the air flow.

5. The high noise exhaust muffler device according to claim 1 or 2, characterized in that: The muffler assembly includes at least two vertical partitions arranged on both sides of the flow equalizer, a serpentine muffler channel is formed between adjacent vertical partitions, and a transverse partition for connecting the vertical partitions away from the flow equalizer.

6. The high noise exhaust muffler device according to claim 5, characterized in that: The vertical partition and the transverse partition are provided with sound absorbing structures.

7. The high noise exhaust muffler device according to claim 1 or 2, characterized in that: The silencer assembly includes at least two groups of silencer plate groups arranged in a direction from the air inlet toward the air outlet, each group of the silencer plate groups is composed of at least two groups of horizontal silencer plates, and air flow channels are formed between adjacent silencer plates. The silencer plates of adjacent silencer plate groups block the air flow channels formed by each other.

8. The high noise exhaust muffler device according to claim 1, characterized in that: The flow equalizing member is a muffler cover, which covers the air inlet in the outer shell, and air holes are formed on the surface of the muffler cover.

9. The high noise exhaust muffler device according to claim 1, characterized in that: A rainproof cap for covering the air outlet is arranged on the top of the outer shell.

10. The high noise exhaust muffler device according to claim 1, characterized in that: The inner wall of the outer shell is sequentially provided with a sound insulation board, a sound absorbing structure and a sound-permeable board.

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