CN217177843U - Elbow silencer - Google Patents
Elbow silencer Download PDFInfo
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- CN217177843U CN217177843U CN202220518173.2U CN202220518173U CN217177843U CN 217177843 U CN217177843 U CN 217177843U CN 202220518173 U CN202220518173 U CN 202220518173U CN 217177843 U CN217177843 U CN 217177843U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to the technical field of silencers, in particular to an elbow silencer; the silencer comprises a right-angle silencing shell, a elbow frame and a uniform flow unit, wherein a silencing cavity is arranged inside the right-angle silencing shell, an air inlet and an air outlet which are communicated with the silencing cavity are arranged at two ends of the right-angle silencing shell, and an air inlet flange is fixed at the air inlet; noise airflow enters the arc-shaped noise elimination channel from the air inlet, the airflow which is transmitted to the sound absorption cavity from the side wall of the elbow frame in the arc-shaped noise elimination channel is absorbed by the first sound absorption cotton, the flow equalizing unit comprises a flow equalizing plate which is fixed on the inner wall of the arc-shaped noise elimination channel and is positioned at one end, close to the air outlet, of the arc-shaped noise elimination channel, a plurality of uniform flow channels which are uniformly arranged at intervals are arranged inside the flow equalizing plate, the airflow which does not penetrate through the side wall of the elbow frame flows out from the air outlet after being equalized through the uniform flow channels, the uniformity of the airflow discharged from the air outlet is improved, and the noise elimination effect of the elbow silencer is remarkably improved.
Description
Technical Field
The utility model belongs to the technical field of the silencer technique and specifically relates to an elbow silencer is related to.
Background
The elbow silencer is an elbow lined with sound absorption materials and has a remarkable attenuation effect on sound waves. The acoustic attenuation consists of three parts: the near-axial wave is absorbed and reflected on the elbow wall, and the energy of the near-axial wave is converted into the energy of oblique wave when the elbow is turned, so that the energy is effectively absorbed by the sound absorption material. The bend silencer is improved on the basis of a common silencer, and not only can be used for reducing noise, but also can obtain uniform wind speed and reduce dynamic pressure loss.
The prior patent with publication number CN213334876U discloses an elbow silencer, including the elbow body, the elbow body is through setting up elbow shell, acoustic celotex board, amortization cotton, perforated plate and guide plate, and the noise air current passes through the air intake and enters into the ventilation cavity of elbow silencer in the back, can be by the guide plate water conservancy diversion, perforated plate, amortization cotton absorb to give sound insulation by the acoustic celotex board.
Although the elbow silencer can reduce noise to a certain extent and achieve a certain silencing effect, the air outlet uniformity is insufficient, so that the silencing effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome above-mentioned technique not enough, provide an elbow silencer, solve among the prior art the degree of consistency of the air-out of elbow silencer not enough, lead to the not good technical problem of noise cancelling effect.
In order to achieve the above technical purpose, the technical scheme of the utility model provides an elbow silencer, include:
the silencer comprises a right-angle silencing shell, wherein a silencing cavity is arranged inside the right-angle silencing shell, an air inlet and an air outlet which are communicated with the silencing cavity are arranged at two ends of the right-angle silencing shell, an air inlet flange is fixed at the air inlet, and a filter screen is fixed at the air outlet;
the elbow frame is fixed in the silencing cavity, a sound absorbing cavity is formed between the elbow frame and the inner wall of the silencing cavity, first sound absorbing cotton is filled in the sound absorbing cavity, an arc silencing channel is arranged in the elbow frame, and two ends of the arc silencing channel are respectively communicated with the air inlet and the air outlet;
the flow equalizing unit comprises a flow equalizing plate, the flow equalizing plate is fixed on the inner wall of the arc-shaped silencing channel and is positioned at one end, close to the air outlet, of the arc-shaped silencing channel, and a plurality of flow equalizing channels which are uniformly arranged at intervals are arranged inside the flow equalizing plate.
Optionally, a second sound-absorbing cotton is adhered to the inner wall of each uniform flow channel.
Optionally, the flow uniformizing unit further includes a plurality of arc-shaped splitter plates evenly spaced, the plurality of arc-shaped splitter plates are perpendicularly fixed to the two opposite side walls of the arc-shaped muffling channel and located at the turning positions of the arc-shaped muffling channel, and a splitter channel is respectively formed between each two adjacent arc-shaped splitter plates.
Optionally, one end of each of the arc-shaped splitter plates, which is close to the air inlet, is provided with a diversion tip, and two sides of the diversion tip are provided with diversion surfaces for diverting air flows entering the splitter channel.
Optionally, the flow splitting surface is a curved surface.
Optionally, the silencer comprises a silencing unit, the silencing unit comprises two silencing plates which are arranged oppositely, the two silencing plates are fixed on the inner wall of the arc silencing passage and located on one side, close to the air outlet, of the arc splitter plate, and an airflow passage is arranged between the two silencing plates.
Optionally, the end portions of both of the sound-blocking plates extend in the direction of the air outlet.
Optionally, the two sound blocking plates are of arc structures, and arc flow guide surfaces are arranged on one surfaces, close to the air outlets, of the sound blocking plates.
Optionally, a third sound-absorbing cotton is adhered to the arc-shaped flow guide surface.
Optionally, a filter screen is fixed at the air outlet, and the filter screen is fixed on the right-angle silencing shell and used for removing dust from the air flow flowing out of the air outlet.
Compared with the prior art, the utility model provides an elbow silencer beneficial effect includes: the silencer is provided with a right-angle silencing shell, a elbow frame and a uniform flow unit, wherein a silencing cavity is arranged inside the right-angle silencing shell, an air inlet and an air outlet which are communicated with the silencing cavity are arranged at two ends of the right-angle silencing shell, and an air inlet flange is fixed at the air inlet; the elbow frame is fixed in the silencing cavity, a sound absorbing cavity is formed between the elbow frame and the inner wall of the silencing cavity, first sound absorbing cotton is filled in the sound absorbing cavity, an arc silencing channel is arranged in the elbow frame, and two ends of the arc silencing channel are respectively communicated with the air inlet and the air outlet; noise airflow enters the arc-shaped noise elimination channel from the air inlet, the airflow which is transmitted to the sound absorption cavity from the side wall of the elbow frame in the arc-shaped noise elimination channel is absorbed by the first sound absorption cotton, the flow equalizing unit comprises a flow equalizing plate which is fixed on the inner wall of the arc-shaped noise elimination channel and is positioned at one end, close to the air outlet, of the arc-shaped noise elimination channel, a plurality of uniform flow channels which are uniformly arranged at intervals are arranged inside the flow equalizing plate, the airflow which does not penetrate through the side wall of the elbow frame flows out from the air outlet after being equalized through the uniform flow channels, the uniformity of the airflow discharged from the air outlet is improved, and the noise elimination effect of the elbow silencer is remarkably improved.
Drawings
Fig. 1 is a schematic structural diagram of an elbow muffler provided by the embodiment of the present invention.
Fig. 2 is a schematic view of a top view structure of an elbow muffler provided by the embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 2.
Wherein, in the figures, the respective reference numerals:
10-right angle silencing shell 11-silencing cavity 12-air inlet
13-air outlet 14-air inlet flange 15-filter screen
20-elbow frame 21-sound absorbing cavity 22-first sound absorbing cotton
23-arc-shaped silencing channel 30-uniform flow unit 31-uniform flow plate
32-even flow channel 33-second sound-absorbing cotton 34-arc splitter plate
35-branch channel 36-diversion tip 40-sound blocking unit
41-sound-blocking plate 42-airflow channel 43-arc flow guide surface
44-third sound absorbing cotton 361-shunt surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides an elbow silencer, which comprises a right-angle silencing shell 10, an elbow frame 20 and a uniform flow unit 30, wherein a silencing cavity 11 is arranged inside the right-angle silencing shell 10, both ends of the right-angle silencing shell 10 are provided with an air inlet 12 and an air outlet 13 which are communicated with the silencing cavity 11, and an air inlet flange 14 is fixed at the air inlet 12; the elbow frame 20 is fixed in the sound-absorbing cavity 11, a sound-absorbing cavity 21 is formed between the elbow frame 20 and the inner wall of the sound-absorbing cavity 11, first sound-absorbing cotton 22 is filled in the sound-absorbing cavity 21, an arc-shaped sound-absorbing channel 23 is arranged in the elbow frame 20, and two ends of the arc-shaped sound-absorbing channel 23 are respectively communicated with the air inlet 12 and the air outlet 13; the flow equalizing unit 30 comprises a flow equalizing plate 31, the flow equalizing plate 31 is fixed on the inner wall of the arc-shaped muffling channel 23 and is located at one end of the arc-shaped muffling channel 23 close to the air outlet 13, and a plurality of flow equalizing channels 32 are arranged inside the flow equalizing plate 31 at regular intervals.
Specifically, the elbow silencer is provided with a right-angle silencing shell 10, an elbow frame 20 and a uniform flow unit 30, wherein a silencing cavity 11 is arranged inside the right-angle silencing shell 10, two ends of the right-angle silencing shell 10 are provided with an air inlet 12 and an air outlet 13 which are communicated with the silencing cavity 11, an air inlet flange 14 is fixed at the air inlet 12, and a filter screen 15 is fixed at the air outlet 13; the elbow frame 20 is fixed in the sound-absorbing cavity 11, a sound-absorbing cavity 21 is formed between the elbow frame 20 and the inner wall of the sound-absorbing cavity 11, first sound-absorbing cotton 22 is filled in the sound-absorbing cavity 21, an arc-shaped sound-absorbing channel 23 is arranged in the elbow frame 20, and two ends of the arc-shaped sound-absorbing channel 23 are respectively communicated with the air inlet 12 and the air outlet 13; the noise air flow enters the arc-shaped noise elimination channel 23 from the air inlet 12, the air flow which is transmitted to the sound absorption cavity 21 from the side wall of the elbow frame 20 in the arc-shaped noise elimination channel 23 is absorbed by the first sound absorption cotton 22, the flow equalizing unit 30 comprises a flow equalizing plate 31, the flow equalizing plate 31 is fixed on the inner wall of the arc-shaped noise elimination channel 23 and is positioned at one end of the arc-shaped noise elimination channel 23 close to the air outlet 13, a plurality of uniform flow channels 32 which are uniformly arranged at intervals are arranged inside the flow equalizing plate 31, and the air flow which does not pass through the side wall of the elbow frame 20 flows out from the air outlet 13 after passing through the uniform flow channels 32, so that the uniformity of the air flow which flows out from the air outlet 13 is improved, and the noise elimination effect of the elbow silencer is obviously improved.
Optionally, a second sound-absorbing cotton 33 is adhered to the inner wall of each uniform flow channel 32. Specifically, the gas entering the uniform flow passage 32 is further absorbed by the second sound-absorbing cotton 33 on the surface of the uniform flow passage 32, and the sound-absorbing effect of the silencer elbow is further improved.
Optionally, the flow equalizing unit 30 further includes a plurality of arc-shaped flow dividing plates 34 evenly spaced, the plurality of arc-shaped flow dividing plates 34 are perpendicularly fixed on two opposite side walls of the arc-shaped muffling channel 23 and located at the turning position of the arc-shaped muffling channel 23, and a flow dividing channel 35 is respectively formed between each arc-shaped flow dividing plate 34. Specifically, after the noise airflow enters the arc-shaped silencing channel 23 from the air inlet 12, the noise airflow enters the branch channels 35 between the arc-shaped branch plates 34, is divided by the branch channels 35, and then enters the uniform flow channel 32 for uniform flow, so that the uniform flow effect of the uniform flow plate 31 can be further improved, and the sound absorption effect of the silencer elbow can be further improved.
Optionally, one end of each curved diversion plate 34 close to the air inlet 12 is provided with a diversion tip 36, and two sides of the diversion tip 36 are provided with diversion surfaces 361 for diverting the air flow entering the diversion channel 35. Specifically, the diversion tip 36 can provide convenience for guiding the airflow into the branch channel 35, and effectively prevent the airflow from being disordered when entering the branch channel 35.
Optionally, the shunting surface 361 is curved. Specifically, the curved surface has a better flow guiding effect, and can provide convenience for guiding the air flow into the branch channel 35, and effectively prevent the air flow from being disordered when entering the branch channel 35.
Optionally, the sound blocking unit 40 is further included, the sound blocking unit 40 includes two sound blocking plates 41 arranged oppositely, the two sound blocking plates 41 are both fixed on the inner wall of the arc-shaped sound attenuation channel 23 and located on one side of the arc-shaped splitter plate 34 close to the air outlet 13, and an air flow channel 42 is arranged between the two sound blocking plates 41. Specifically, after the noise air flow enters the arc-shaped silencing passage 23 from the air inlet 12, the noise air flow passes through the air flow passage 42 between the two sound-blocking plates 41, and the sound-blocking plates 41 can block the air flow and reduce the flow speed of the air flow to a certain extent, so that the air flow can pass through the arc-shaped silencing passage 23 to absorb sound.
Alternatively, the end portions of both sound-blocking plates 41 extend in the direction of the air outlet 13. Specifically, with this arrangement, the end portions of the sound-blocking plates 41 are extended in the flow direction of the airflow, so that the airflow is guided, and the airflow is prevented from being disturbed when passing through the airflow passage 42, resulting in the generation of noise.
Optionally, the two sound-blocking plates 41 are both arc-shaped structures, and one surface of the sound-blocking plate 41 close to the air outlet 13 is provided with an arc-shaped flow guide surface 43. Specifically, the arc-shaped diversion surface 43 can further enhance the diversion effect of the sound-blocking plate 41, and prevent the airflow from being disturbed when passing through the airflow channel 42, which results in the generation of noise.
Optionally, a third sound-absorbing cotton 44 is adhered to the arc-shaped flow guide surface 43. Specifically, the third sound-absorbing cotton 44 can attract the airflow passing through the arc-shaped flow guide surface 43, so as to further improve the silencing effect of the elbow silencer.
Optionally, a filter screen 15 is fixed at the air outlet 13, and the filter screen 15 is fixed on the right-angle sound attenuation shell 10 and used for removing dust from the air flow flowing out of the air outlet 13. Specifically, the screen 15 may remove dust from the gas flowing out through the gas outlet 13.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. An elbow muffler, comprising:
the silencer comprises a right-angle silencing shell, wherein a silencing cavity is arranged inside the right-angle silencing shell, an air inlet and an air outlet which are communicated with the silencing cavity are arranged at two ends of the right-angle silencing shell, and an air inlet flange is fixed at the air inlet;
the elbow frame is fixed in the silencing cavity, a sound absorbing cavity is formed between the elbow frame and the inner wall of the silencing cavity, first sound absorbing cotton is filled in the sound absorbing cavity, an arc silencing channel is arranged in the elbow frame, and two ends of the arc silencing channel are respectively communicated with the air inlet and the air outlet;
the flow equalizing unit comprises a flow equalizing plate, the flow equalizing plate is fixed on the inner wall of the arc-shaped silencing channel and is positioned at one end, close to the air outlet, of the arc-shaped silencing channel, and a plurality of flow equalizing channels which are uniformly arranged at intervals are arranged inside the flow equalizing plate.
2. The elbow silencer of claim 1, wherein the inner wall of each uniform flow passage is adhered with second sound-absorbing cotton.
3. The elbow muffler according to claim 1, wherein the flow equalizing unit further comprises a plurality of evenly spaced arc-shaped flow dividing plates, the plurality of arc-shaped flow dividing plates are perpendicularly fixed on two opposite side walls of the arc-shaped muffling channel and are located at the turning position of the arc-shaped muffling channel, and a flow dividing channel is respectively formed between each two arc-shaped flow dividing plates.
4. The elbow muffler according to claim 3, wherein one end of each of the curved splitter plates adjacent to the air inlet is provided with a flow guiding tip, and both sides of the flow guiding tip are provided with splitting surfaces for splitting the air flow entering the splitter channel.
5. The elbow muffler according to claim 4, wherein the diverging surface is curved.
6. The elbow muffler according to claim 3, further comprising a sound blocking unit, wherein the sound blocking unit comprises two sound blocking plates which are oppositely arranged, the two sound blocking plates are fixed on the inner wall of the arc-shaped sound attenuation channel and are positioned on one side of the arc-shaped splitter plate close to the air outlet, and an air flow channel is arranged between the two sound blocking plates.
7. The elbow muffler according to claim 6, wherein end portions of both of said sound-blocking plates extend in the direction of said air outlet.
8. The elbow muffler according to claim 7, wherein the two sound-blocking plates are arc-shaped, and an arc-shaped flow guide surface is arranged on one surface of each sound-blocking plate close to the air outlet.
9. The elbow muffler according to claim 8, wherein the curved baffle surface is bonded with a third sound absorbing cotton.
10. The elbow silencer of any one of claims 1 to 9, wherein a filter screen is fixed at the air outlet, and the filter screen is fixed on the right-angle silencing shell and used for removing dust from the air flow flowing out of the air outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220518173.2U CN217177843U (en) | 2022-03-09 | 2022-03-09 | Elbow silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220518173.2U CN217177843U (en) | 2022-03-09 | 2022-03-09 | Elbow silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217177843U true CN217177843U (en) | 2022-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220518173.2U Active CN217177843U (en) | 2022-03-09 | 2022-03-09 | Elbow silencer |
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| Country | Link |
|---|---|
| CN (1) | CN217177843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576325A (en) * | 2023-07-13 | 2023-08-11 | 江苏华东正大空调设备有限公司 | Muffler for ventilating duct |
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2022
- 2022-03-09 CN CN202220518173.2U patent/CN217177843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576325A (en) * | 2023-07-13 | 2023-08-11 | 江苏华东正大空调设备有限公司 | Muffler for ventilating duct |
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