CN210178602U - Noise reduction device for smoke exhaust fan cabinet - Google Patents
Noise reduction device for smoke exhaust fan cabinet Download PDFInfo
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- CN210178602U CN210178602U CN201920555095.1U CN201920555095U CN210178602U CN 210178602 U CN210178602 U CN 210178602U CN 201920555095 U CN201920555095 U CN 201920555095U CN 210178602 U CN210178602 U CN 210178602U
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- silencing
- pipe body
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- bowl
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Abstract
The utility model discloses a noise reduction device for a fume exhaust fan cabinet, which comprises a pipe body, wherein one end of the pipe body is provided with an air inlet connector, the other end of the pipe body is provided with an air outlet connector, and one side of the pipe body, which is close to the air inlet connector, is provided with an arc pressure relief plate; a plurality of silencing bowls are arranged in the pipe body at the rear end of the arc-shaped pressure relief plate, small opening ends of the silencing bowls are arranged towards the air inlet connecting port, and large opening ends of the silencing bowls are arranged towards the air outlet connecting port; a silencing plate is arranged in the pipe body at the rear end of the silencing bowl, and a plurality of conical silencing nets are arranged in the pipe body at one end close to the air outlet connecting port; a plurality of wedge-shaped blocks are arranged in the pipe body between the sound-absorbing plate and the conical sound-absorbing net; air holes are formed in the arc-shaped pressure relief plate, the bowl-shaped structure of the silencing bowl and the silencing plate; the arc-shaped pressure relief plate, the silencing bowl, the silencing plate, the wedge-shaped block and the conical silencing net are matched for use, so that the silencing effect of the noise reduction device is obviously improved.
Description
Technical Field
The utility model relates to a device of making an uproar falls for exhaust hood belongs to the equipment of making an uproar technical field that falls.
Background
The rapid development of mechanization brings convenience to production and life of people, and simultaneously, the exhaust system of the gravity center machine also generates great noise, so that the physical and psychological health of people is influenced; in order to reduce noise, people often choose to install various devices for silencing and noise reduction at the air outlet, but the noise reduction effect of the existing silencing and noise reduction device is poor.
Disclosure of Invention
For solving the not enough of prior art, the utility model provides a device of making an uproar falls for exhausting flue-gas blower rack adopts arc pressure relief board, amortization bowl, acoustical panel, wedge and toper amortization net cooperation to use, is showing the noise cancelling effect who has improved the device of making an uproar falls.
The utility model discloses the technical scheme who adopts does:
a noise reduction device for a smoke exhaust ventilator cabinet comprises a pipe body, wherein one end of the pipe body is provided with an air inlet connector, the other end of the pipe body is provided with an air outlet connector, one side of the pipe body, which is close to the air inlet connector, is provided with an arc-shaped pressure relief plate, and the opening direction of the arc-shaped pressure relief plate faces the air inlet connector; a plurality of silencing bowls are arranged in the pipe body at the rear end of the arc-shaped pressure relief plate, the silencing bowls are of bowl-shaped structures with large caliber ends in an open shape, small opening ends of the silencing bowls are arranged towards the air inlet connecting port, and large opening ends of the silencing bowls are arranged towards the air outlet connecting port; a silencing plate is arranged in the pipe body at the rear end of the silencing bowl, a plurality of conical silencing nets are arranged in the pipe body close to one end of the air outlet connecting port, and openings of the conical silencing nets face the air outlet connecting port; a plurality of wedge-shaped blocks are arranged in the pipe body between the silencing plate and the conical silencing net, and the tips of the wedge-shaped blocks face the air inlet connector; the arc pressure relief plate, the bowl-shaped structure of the silencing bowl and the silencing plate are all provided with air holes.
Preferably, the pipe body corresponding to the silencing bowl is inwards recessed to form an annular groove, a plurality of vent holes are formed in the annular groove, sound absorbing materials are filled in the annular groove, and an annular sealing plate used for sealing the annular groove is arranged on the pipe body.
Further preferably, the inclined plane with the largest area on the wedge-shaped block is arranged towards the pipe body.
Preferably, the sound-absorbing plate comprises a hollow plate, the hollow plate is provided with a plurality of micropores, the pore diameter of each micropore is 0.8-1.2 mm, the penetration rate of each micropore is 1% -5%, and the hollow structure of the hollow plate is filled with corrosion-resistant metal soft wire cloth.
Preferably, the mesh holes of the conical silencing net are of a hemispherical structure, and the large opening ends of the mesh holes of the hemispherical structure face the air outlet connector.
Further preferably, the air inlet connector and the air outlet connector are provided with flanges for connecting pipelines.
The beneficial effects of the utility model reside in that:
the air flow passes through the air inlet connector and is primarily buffered through the arc-shaped pressure relief plate, the air flow is dispersed, the flow velocity of the air flow is weakened, the sound wave energy of the air flow is partially offset, the air flow flows to the silencing bowl and is subjected to sound absorption treatment by the sound absorption material filled in the annular groove and then enters the silencing plate, and the corrosion-resistant metal soft wire cloth filled in the silencing plate further weakens the flow velocity of the air flow and offsets the sound wave energy of the air flow again; the airflow enters the pipe body provided with the plurality of wedge blocks along the advancing direction, the kinetic energy of the airflow is converted into heat energy to be absorbed after the plurality of wedge blocks collide with the airflow, the sound wave energy of the airflow is further reduced, the airflow passes through the conical silencing net with the hemispherical structure meshes and flows out from the large caliber through the small caliber, the sound wave energy of the airflow is further weakened, and the effect of remarkably reducing noise is achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a pipe body provided with a silencing bowl;
FIG. 3 is a schematic structural diagram of a conical sound-deadening net;
the main reference numerals in the figures have the following meanings:
1. the air conditioner comprises a pipe body, an air inlet connector, an air outlet connector, a curved pressure relief plate, a silencing bowl, a silencing plate, a conical silencing net, a wedge-shaped block, an annular groove, a conical silencing net, a conical block, an annular groove, an annular vent hole, an annular sealing plate and an annular sealing plate, wherein the pipe body 2 is connected with the air inlet connector, the air outlet connector 3 is connected with the air outlet connector, the.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1: as shown in fig. 1-3: a noise reduction device for a smoke exhaust ventilator cabinet comprises a pipe body 1, wherein one end of the pipe body 1 is provided with an air inlet connector 2, the other end of the pipe body 1 is provided with an air outlet connector 3, one side of the pipe body 1, which is close to the air inlet connector 2, is provided with an arc-shaped pressure relief plate 4, and the opening direction of the arc-shaped pressure relief plate 4 faces the air inlet connector 2; a plurality of silencing bowls 5 are arranged in the pipe body 1 at the rear end of the arc-shaped pressure relief plate 4, the silencing bowls are of a bowl-shaped structure with large caliber ends being open, small opening ends of the silencing bowls 5 are arranged towards the air inlet connecting port 2, and large opening ends of the silencing bowls 5 are arranged towards the air outlet connecting port 3; a silencing plate 6 is arranged in the pipe body 1 at the rear end of the silencing bowl 5, a plurality of conical silencing nets 7 are arranged in the pipe body 1 at one end close to the air outlet connecting port 3, and the openings of the conical silencing nets 7 face the air outlet connecting port 3; a plurality of wedge-shaped blocks 8 are arranged in the pipe body 1 between the silencing plate 6 and the conical silencing net 7 in a row, the tips of the wedge-shaped blocks 8 face the air inlet connector 2, and the inclined plane with the largest area on the wedge-shaped blocks 8 faces the pipe body 1; air holes are formed in the arc-shaped pressure relief plate 4, the bowl-shaped structure of the silencing bowl 5 and the silencing plate 6; flanges for connecting pipelines are arranged at the air inlet connector 2 and the air outlet connector 3.
Referring to fig. 2, the pipe body 1 corresponding to the silencing bowl 5 is recessed inward to form an annular groove 11, a plurality of vent holes 12 are formed in the annular groove 11, a sound absorbing material is filled in the annular groove 11, and an annular sealing plate 13 for sealing the annular groove 11 is disposed on the pipe body 1.
Referring to fig. 3, the mesh holes of the conical sound-deadening net 7 are of a hemispherical structure, and the large opening ends of the mesh holes of the hemispherical structure face the air outlet connection port 3.
In this embodiment, the sound-absorbing plate 6 includes a hollow plate, a plurality of micropores are formed in the hollow plate, the pore diameter of each micropore is 0.8mm, the penetration rate of each micropore is 1%, and the hollow structure of the hollow plate is filled with corrosion-resistant metal soft-wire cloth.
The air flow passes through the air inlet connector 2 and is primarily buffered through the arc-shaped pressure relief plate 4, the air flow is dispersed, the flow velocity of the air flow is weakened, the sound wave energy of the air flow is partially offset, the air flow flows to the silencing bowl 5 and is subjected to sound absorption treatment by the sound absorption material filled in the annular groove 11 and then enters the silencing plate 6, and the corrosion-resistant metal soft wire cloth filled in the silencing plate 6 further weakens the flow velocity of the air flow and offsets the sound wave energy of the air flow again; the air current enters into the pipe body 1 provided with the plurality of wedge blocks 8 along the advancing direction, the kinetic energy of the air current is converted into heat energy to be absorbed after the plurality of wedge blocks 8 collide with the air current, the sound wave energy of the air current is further reduced, the air current passes through the conical sound attenuation net 7 provided with the semi-spherical structure meshes and flows out from the large caliber through the small caliber, the air current sound wave energy is further weakened, and the effect of remarkably reducing noise is achieved.
To sum up, the utility model provides a pair of a device of making an uproar falls for exhaust hood rack has good amortization noise reduction effect, the effectual physical and mental health who protects people.
Example 2: the same as example 1 except that:
in this embodiment, the sound-absorbing plate 6 includes a hollow plate, a plurality of micropores are formed in the hollow plate, the pore diameter of each micropore is 1.2mm, the penetration rate of each micropore is 5%, and the hollow structure of the hollow plate is filled with corrosion-resistant metal soft-wire cloth.
Example 3: the same as example 1 except that:
in this embodiment, the sound-absorbing plate 6 includes a hollow plate, a plurality of micropores are formed in the hollow plate, the pore diameter of each micropore is 1.0mm, the penetration rate of each micropore is 3%, and the hollow structure of the hollow plate is filled with corrosion-resistant metal soft-wire cloth.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A device of making an uproar falls for arranging fume exhauster rack, its characterized in that: the air conditioner comprises a pipe body (1), wherein an air inlet connector (2) is arranged at one end of the pipe body (1), an air outlet connector (3) is arranged at the other end of the pipe body (1), an arc-shaped pressure relief plate (4) is arranged at one side, close to the air inlet connector (2), of the pipe body (1), and the opening direction of the arc-shaped pressure relief plate (4) faces the air inlet connector (2); a plurality of silencing bowls (5) are arranged in the pipe body (1) at the rear end of the arc-shaped pressure relief plate (4), the silencing bowls are of bowl-shaped structures with large caliber ends in an open shape, small opening ends of the silencing bowls (5) are arranged towards the air inlet connecting port (2), and large opening ends of the silencing bowls (5) are arranged towards the air outlet connecting port (3); a silencing plate (6) is arranged in the pipe body (1) at the rear end of the silencing bowl (5), a plurality of conical silencing nets (7) are arranged in the pipe body (1) close to one end of the air outlet connecting port (3), and openings of the conical silencing nets (7) face the air outlet connecting port (3); a plurality of wedge-shaped blocks (8) are arranged in the pipe body (1) between the sound-absorbing plate (6) and the conical sound-absorbing net (7), and the tips of the wedge-shaped blocks (8) face the air inlet connector (2); air holes are formed in the arc-shaped pressure release plate (4), the bowl-shaped structure of the silencing bowl (5) and the silencing plate (6).
2. The noise reduction device for an exhaust hood according to claim 1, wherein the pipe body (1) corresponding to the silencing bowl (5) is recessed inward to form an annular groove (11), the annular groove (11) is formed with a plurality of vent holes (12), the annular groove (11) is filled with a sound absorbing material, and an annular sealing plate (13) for closing the annular groove (11) is provided on the pipe body (1).
3. A noise reducing device for a fume extraction fan cabinet according to claim 1, wherein the inclined plane of the wedge-shaped block (8) with the largest area is arranged towards the pipe body (1).
4. The noise reduction device for the exhaust ventilator cabinet according to claim 1, wherein the noise reduction plate (6) comprises a hollow plate, a plurality of micropores are formed in the hollow plate, the pore diameter of each micropore is 0.8mm-1.2mm, the penetration rate of each micropore is 1% -5%, and corrosion-resistant metal soft wire cloth is filled in the hollow structure of the hollow plate.
5. The noise reduction device for a fume exhaust fan cabinet according to claim 1, wherein the mesh holes of the conical silencing net (7) are of a hemispherical structure, and the large opening ends of the mesh holes of the hemispherical structure face the air outlet connection opening (3).
6. The noise reduction device for the exhaust air cabinet according to claim 1, wherein flanges for connecting pipelines are arranged at the air inlet connector (2) and the air outlet connector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555095.1U CN210178602U (en) | 2019-04-23 | 2019-04-23 | Noise reduction device for smoke exhaust fan cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555095.1U CN210178602U (en) | 2019-04-23 | 2019-04-23 | Noise reduction device for smoke exhaust fan cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210178602U true CN210178602U (en) | 2020-03-24 |
Family
ID=69831416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920555095.1U Expired - Fee Related CN210178602U (en) | 2019-04-23 | 2019-04-23 | Noise reduction device for smoke exhaust fan cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210178602U (en) |
-
2019
- 2019-04-23 CN CN201920555095.1U patent/CN210178602U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200324 |