CN105332953A - Silencer for draught fan inlet - Google Patents
Silencer for draught fan inlet Download PDFInfo
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- CN105332953A CN105332953A CN201410392325.9A CN201410392325A CN105332953A CN 105332953 A CN105332953 A CN 105332953A CN 201410392325 A CN201410392325 A CN 201410392325A CN 105332953 A CN105332953 A CN 105332953A
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- baffler
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- seat
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Abstract
The invention discloses a silencer for a draught fan inlet. The silencer for the draught fan inlet comprises a silencer cover and a silencer seat. The silencer cover comprises a cylinder which is opened at one end and provided with a silencing structure. A semi-cylindrical partition plate is arranged in the cylinder. The two sides of the semi-cylindrical partition plate are fixed to the inner wall of the cylinder through first horizontal partition plates. The silencer seat comprises a connecting pipe. An annular silencing plate is arranged at the position, close to the left end, of the outer wall of the connecting pipe. A first semi-cylindrical silencing wall is arranged on the annular silencing plate. A semicircular silencing plate is arranged at the left end of the connecting pipe. The circular arc end of the semicircular silencing plate stretches out of the upper end of the connecting pipe and is provided with a second semi-cylindrical silencing wall. The linear end of the semicircular silencing plate is provided with a second horizontal partition plate, and the other end of the second horizontal partition plate is provided with a semicircular partition plate. The front end of the silencer seat stretches in the silencer cover to form an air inlet, an air outlet and a circuitous air inlet channel. The silencer for the draught fan inlet is compact in structure, machining and installing are convenient, and compared with a common silencer with the same size, the noise lowering effect is improved by more than 10 decibels.
Description
Technical field
The present invention relates to a kind of fan inlet baffler.
Background technique
Baffler be stop sound transmission and can make air-flow normal through a kind of device, use baffler to be the important measures eliminating noise in air.Baffler is generally arranged in the vent systems of the equipment such as blower fan, plays the effect reducing noise.Existing muffler for fan has lightweight, that volume is little advantage, although can remove the noise of low frequency, for the books circulation amount blower fan that noise is relatively large, noise reduction is not clearly, can not meet the environmental requirement in enterprise's production.General resistive baffler absorbs noise by increasing noise reduction area, and increase length and the diameter that noise reduction area can only pass through to increase baffler, the installing space of some client to baffler is restricted, limits the length of baffler, which limits the erasure effect of baffler.
Summary of the invention
The object of the invention is for deficiency of the prior art, a kind of fan inlet baffler is provided.
The object of the invention is to be achieved through the following technical solutions:
A kind of fan inlet baffler, comprises muffler cover, baffler seat; Described muffler cover comprises the cylinder with noise-reducing structure of one end open, is provided with semi-cylindrical shaped dividing plate coaxial with it in cylinder, and the both sides of semi-cylindrical shaped dividing plate are fixed on cylinder inner wall by the first horizontal baffle, cylinder is separated into two independently cavitys; Described baffler seat comprises junction pipe, and junction pipe is provided with annular acoustical panel near the outer wall of left end, and annular acoustical panel is provided with the first semicircular cylinder silencer wall coaxial with junction pipe; Junction pipe left end is provided with semicircle acoustical panel, the arc end of semicircle acoustical panel stretches out junction pipe upper end, and be provided with the second semicircular cylinder silencer wall coaxial with junction pipe at its arc end, the rectilinear end of semicircle acoustical panel is provided with the second horizontal baffle, and the other end of the second horizontal baffle is provided with semicircle dividing plate; The axle of junction pipe of described baffler seat and the axle of the cylinder of muffler cover are positioned at same straight line, and the first semicircular cylinder silencer wall of baffler seat front end, the second semicircular cylinder silencer wall, the second horizontal baffle, semicircle dividing plate stretch in muffler cover and form intake grill, exhaust outlet and roundabout air intake passage.
Described intake grill and exhaust outlet, in the same side, are provided with filter screen in air inlet, enter air intake passage for stoping dust; Described exhaust outlet is provided with flange, is convenient to install with air inlet fix.
Described muffler cover and baffler seat are bolted, and described bolt is connected and fixed the bottom of muffler cover and the second horizontal baffle of baffler seat.Further, be provided with strut in described bolt both sides, described strut is separately fixed on the semicircle dividing plate of the semi-cylindrical shaped dividing plate of muffler cover, baffler seat, improves the join strength of baffler further, prevents baffler distortion.
Described bolt is preferably butterfly-type bolt, more efficient when hand twists installation.
Described annular acoustical panel, the first semicircular cylinder silencer wall, semicircle acoustical panel, the second semicircular cylinder silencer wall are by the silencing cotton composition being located at outside steel plate, inner punched-plate and be provided with between steel plate and punched-plate.
The cylinder of described muffler cover is by being located at outside steel plate, inner punched-plate and the silencing cotton that is provided with between steel plate and punched-plate forms.
Described steel plate is preferably 3MM steel plate.
Described semi-cylindrical shaped dividing plate, the first horizontal baffle, the second horizontal baffle, semicircle dividing plate are silencing cotton and are clipped in acoustical panel between two-layer punched-plate, are conducive in air intake passage, absorbing noise further.
The diameter of described semicircle acoustical panel is greater than the diameter of junction pipe, and the center of circle of semicircle acoustical panel and the center of circle of junction pipe are in same level straight line.
The both sides of the second described horizontal baffle are arc structure, and the diameter of circular arc is 1:1 with the ratio of the internal diameter of the semi-cylindrical shaped dividing plate of muffler cover, are conducive to the first horizontal baffle of muffler cover and the second horizontal baffle seamless link of baffler seat.
The external diameter of the first semicircular cylinder silencer wall of described baffler seat is 1:1 with the ratio of the internal diameter of the cylinder of muffler cover, when the axle of the axle of the junction pipe of baffler seat and the cylinder of muffler cover is positioned at same straight line, the outside of the first cylinder silencer wall is close on the punched-plate in cylinder.
The internal diameter of the second semicircular cylinder silencer wall of described baffler seat is greater than the external diameter of the semi-cylindrical shaped dividing plate of muffler cover, and the external diameter of the second semicircular cylinder silencer wall is less than the internal diameter of the cylinder of muffler cover.
The diameter of described semicircle dividing plate is greater than the diameter of junction pipe, is less than the internal diameter of the first semicircular cylinder silencer wall, makes semicircle plate washer cover the lower openings of junction pipe left end, forms roundabout air intake passage further.
Compared to the prior art, beneficial effect of the present invention:
Fan inlet muffler structure of the present invention is compact, processes easy for installation.
Fan inlet baffler of the present invention is impedance complex formula baffler, be cross-linked by muffler cover and baffler seat and form roundabout air intake passage between intake grill and exhaust outlet, the cross section of air intake passage is constantly change, after air-flow enters air intake passage, gas flow rate constantly changes, simultaneously because passage surrounding is equipped with sound absorbing material, by extending the length of air intake passage, expand the area that noise contacts with sound absorbing material, extend the time that noise contacts with sound absorbing material, erasure effect can be improved greatly.Compared with common comparable size baffler, noise reduction improves more than 10 decibels, can reduce the impact of noise on working environment greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of fan inlet baffler of the present invention;
Fig. 2 is the right elevation of the muffler cover of Fig. 1 fan inlet baffler;
Fig. 3 is the left view of the baffler seat of Fig. 1 fan inlet baffler;
In figure, 1-muffler cover, 2-baffler seat, 3-punched-plate, 4-silencing cotton, 5-cylinder, 6-semi-cylindrical shaped dividing plate, 7-first horizontal baffle, 8-junction pipe, 9-annular acoustical panel, 10-first semicircular cylinder silencer wall, the semicircle acoustical panel of 11-, 12-second semicircular cylinder silencer wall, 13-second horizontal baffle, the semicircle dividing plate of 14-, 15-bolt, 16-strut, 17-flange, 18-intake grill, 19-exhaust outlet.
Embodiment
Below in conjunction with the drawings and specific embodiments, technological scheme of the present invention is described further.
As shown in Figure 1,2 and 3, a kind of fan inlet baffler, comprises muffler cover 1, baffler seat 2; Described muffler cover 1 comprises the cylinder 5 with noise-reducing structure of one end open, semi-cylindrical shaped dividing plate 6 coaxial is with it provided with in cylinder 5, the both sides of semi-cylindrical shaped dividing plate 6 are fixed on cylinder inner wall by the first horizontal baffle 7, cylinder 5 are separated into two independently cavitys; Described baffler seat 2 comprises junction pipe 8, and junction pipe 8 is provided with annular acoustical panel 9 near the outer wall of left end, and annular acoustical panel 9 is provided with the first semicircular cylinder silencer wall 10 coaxial with junction pipe 8; Junction pipe 8 left end is provided with the semicircle acoustical panel 11 that diameter is greater than junction pipe 8 diameter, the semicircle center of circle of acoustical panel 11 and the center of circle of junction pipe 8 are in same level straight line, the arc end of semicircle acoustical panel 11 stretches out junction pipe 8 upper end, and be provided with the second semicircular cylinder silencer wall 12 coaxial with junction pipe 8 at its arc end, the other end that the rectilinear end of semicircle acoustical panel 11 is provided with the second horizontal baffle 13, second horizontal baffle 13 is provided with semicircle dividing plate 14; The axle of the axle of the junction pipe 8 of described baffler seat 2 and the cylinder of muffler cover 1 is positioned at same straight line, both are connected by bolt 15, the outside of the first cylinder silencer wall 10 is close on the punched-plate in cylinder 5, and the first semicircular cylinder silencer wall 10, second semicircular cylinder silencer wall 12, second horizontal baffle 13 of baffler seat 2 front end, semicircle dividing plate 14 stretch in muffler cover 1 the roundabout air intake passage forming intake grill 18, exhaust outlet 19 and cross section and constantly change; Described intake grill 18 is with exhaust outlet 19 in the same side, and at intake grill 18, place is provided with filter screen, enters air intake passage for stoping dust; Described exhaust outlet 19 is provided with flange 17, is convenient to install with air inlet fix.
Described bolt 15 is connected and fixed the bottom of muffler cover 1 and the second horizontal baffle 13 of baffler seat 2; Be provided with strut 16 in described bolt 15 both sides, strut 16 is separately fixed on the semicircle dividing plate 14 of the semi-cylindrical shaped dividing plate 6 of muffler cover 1, baffler seat 2, improves the join strength of baffler further, prevents baffler distortion.
Described bolt 15 is butterfly-type bolt, more efficient when hand twists installation.
Described cylinder 5 forms by being located at outside steel plate, inner punched-plate 3 and the silencing cotton 4 be located between steel plate and punched-plate 3; Described annular acoustical panel 9, first semicircular cylinder silencer wall 10, semicircle acoustical panel 11, second semicircular cylinder silencer wall 12 are by being located at outside steel plate, inner punched-plate 3 and the silencing cotton 4 that is provided with between steel plate and punched-plate forms.Described steel plate is preferably 3MM steel plate.
Described semi-cylindrical shaped dividing plate 6, first horizontal baffle 7, second horizontal baffle 13, semicircle dividing plate 14 are silencing cotton and are clipped in acoustical panel between two-layer punched-plate, are conducive in air intake passage, absorbing noise further.
The both sides of the second described horizontal baffle 13 are arc structure, and the diameter of circular arc is 1:1 with the ratio of the internal diameter of the semi-cylindrical shaped dividing plate 6 of muffler cover 1, are conducive to the first horizontal baffle 7 of muffler cover 1 and the second horizontal baffle 13 seamless link of baffler seat 2.
The external diameter of the first semicircular cylinder silencer wall 10 of described baffler seat 2 is 1:1 with the ratio of the internal diameter of the cylinder 5 of muffler cover 1.
The internal diameter of the second semicircular cylinder silencer wall 12 of described baffler seat 2 is greater than the external diameter of the semi-cylindrical shaped dividing plate 6 of muffler cover 1, and the external diameter of the second semicircular cylinder silencer wall 12 is less than the internal diameter of the cylinder 5 of muffler cover 1.
The diameter of described semicircle dividing plate 14 is greater than the diameter of junction pipe 8, is less than the internal diameter of the first semicircular cylinder silencer wall 12, makes semicircle plate washer 14 cover the lower openings of junction pipe 8 left end.
Fan inlet baffler of the present invention is impedance complex formula baffler, and compact structure, processes easy for installation.Be cross-linked by muffler cover and baffler seat and form roundabout air intake passage between intake grill and exhaust outlet, the cross section of air intake passage is constantly change, after air-flow enters air intake passage, gas flow rate constantly changes, simultaneously because passage surrounding is equipped with sound absorbing material, by extending the length of air intake passage, expand the area that noise contacts with sound absorbing material, extend the time that noise contacts with sound absorbing material, erasure effect can be improved greatly.Compared with common comparable size baffler, noise reduction improves more than 10 decibels, can reduce the impact of noise on working environment greatly.
Claims (10)
1. a fan inlet baffler, is characterized in that it comprises muffler cover, baffler seat; Described muffler cover comprises the cylinder with noise-reducing structure of one end open, is provided with semi-cylindrical shaped dividing plate coaxial with it in cylinder, and the both sides of semi-cylindrical shaped dividing plate are fixed on cylinder inner wall by the first horizontal baffle, cylinder is separated into two independently cavitys; Described baffler seat comprises junction pipe, and junction pipe is provided with annular acoustical panel near the outer wall of left end, and annular acoustical panel is provided with the first semicircular cylinder silencer wall coaxial with junction pipe; Junction pipe left end is provided with semicircle acoustical panel, the arc end of semicircle acoustical panel stretches out junction pipe upper end, and be provided with the second semicircular cylinder silencer wall coaxial with junction pipe at its arc end, the rectilinear end of semicircle acoustical panel is provided with the second horizontal baffle, and the other end of the second horizontal baffle is provided with semicircle dividing plate; The axle of junction pipe of described baffler seat and the axle of the cylinder of muffler cover are positioned at same straight line, and the first semicircular cylinder silencer wall of baffler seat front end, the second semicircular cylinder silencer wall, the second horizontal baffle, semicircle dividing plate stretch in muffler cover and form intake grill, exhaust outlet and roundabout air intake passage.
2. fan inlet baffler according to claim 1, it is characterized in that described intake grill and exhaust outlet are in the same side, are provided with filter screen in air inlet, described exhaust outlet is provided with flange.
3. fan inlet baffler according to claim 1, is characterized in that described muffler cover and baffler seat are bolted; Described bolt both sides are provided with strut, and described strut is separately fixed on the semicircle dividing plate of the semi-cylindrical shaped dividing plate of muffler cover, baffler seat.
4. fan inlet baffler according to claim 1, is characterized in that the cylinder of described muffler cover is by being located at outside steel plate, inner punched-plate and the silencing cotton that is provided with between steel plate and punched-plate forms; Described annular acoustical panel, the first semicircular cylinder silencer wall, semicircle acoustical panel, the second semicircular cylinder silencer wall are by the silencing cotton composition being located at outside steel plate, inner punched-plate and be provided with between steel plate and punched-plate.
5. fan inlet baffler according to claim 1, is characterized in that described semi-cylindrical shaped dividing plate, the first horizontal baffle, the second horizontal baffle, semicircle dividing plate are silencing cotton and are clipped in acoustical panel between two-layer punched-plate.
6. fan inlet baffler according to claim 1, it is characterized in that the diameter of described semicircle acoustical panel is greater than the diameter of junction pipe, and the center of circle of semicircle acoustical panel and the center of circle of junction pipe is in same level straight line.
7. fan inlet baffler according to claim 1, it is characterized in that the both sides of the second described horizontal baffle are arc structure, the diameter of circular arc is 1:1 with the ratio of the internal diameter of the semi-cylindrical shaped dividing plate of muffler cover.
8. fan inlet baffler according to claim 1, it is characterized in that the external diameter of the first semicircular cylinder silencer wall of described baffler seat is 1:1 with the ratio of the internal diameter of the cylinder of muffler cover, the outside of the first cylinder silencer wall is close on the punched-plate in cylinder.
9. fan inlet baffler according to claim 1, it is characterized in that the internal diameter of the second semicircular cylinder silencer wall of described baffler seat is greater than the external diameter of the semi-cylindrical shaped dividing plate of muffler cover, the external diameter of the second semicircular cylinder silencer wall is less than the internal diameter of the cylinder of muffler cover.
10. fan inlet baffler according to claim 1, is characterized in that the diameter of described semicircle dividing plate is greater than the diameter of junction pipe, is less than the internal diameter of the first semicircular cylinder silencer wall, described semicircle plate washer covers the lower openings of junction pipe left end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392325.9A CN105332953B (en) | 2014-08-11 | 2014-08-11 | A kind of fan inlet muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410392325.9A CN105332953B (en) | 2014-08-11 | 2014-08-11 | A kind of fan inlet muffler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105332953A true CN105332953A (en) | 2016-02-17 |
| CN105332953B CN105332953B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410392325.9A Active CN105332953B (en) | 2014-08-11 | 2014-08-11 | A kind of fan inlet muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105332953B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503822A (en) * | 2017-09-21 | 2017-12-22 | 永嘉县荣信科技有限公司 | A kind of automobile exhaust muffler |
| CN107560052A (en) * | 2016-06-29 | 2018-01-09 | 魏霖静 | A kind of air exchange filter of computer room |
| CN111727324A (en) * | 2018-02-28 | 2020-09-29 | 三电汽车空调系统株式会社 | Air blower |
| CN113280007A (en) * | 2021-05-27 | 2021-08-20 | 中车大连机车研究所有限公司 | Narrow-distance sound-absorbing insulator for magnetic suspension air blower |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151999A (en) * | 1994-11-29 | 1996-06-11 | Hitachi Ltd | Blower device with silencer |
| JPH08189333A (en) * | 1994-12-29 | 1996-07-23 | Showa Denki Kk | Silencer installed on suction port of air blower |
| CN201705737U (en) * | 2010-02-22 | 2011-01-12 | 戴正欣 | Small landing air blower acoustic hood |
| CN201953444U (en) * | 2010-12-27 | 2011-08-31 | 山东科技大学 | Silencer |
| CN202991663U (en) * | 2012-12-28 | 2013-06-12 | 重庆江增船舶重工有限公司 | Vent silencer for centrifugal blower or compressor |
| CN204003648U (en) * | 2014-08-11 | 2014-12-10 | 宜兴优纳特机械有限公司 | A kind of blower fan import baffler |
-
2014
- 2014-08-11 CN CN201410392325.9A patent/CN105332953B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08151999A (en) * | 1994-11-29 | 1996-06-11 | Hitachi Ltd | Blower device with silencer |
| JPH08189333A (en) * | 1994-12-29 | 1996-07-23 | Showa Denki Kk | Silencer installed on suction port of air blower |
| CN201705737U (en) * | 2010-02-22 | 2011-01-12 | 戴正欣 | Small landing air blower acoustic hood |
| CN201953444U (en) * | 2010-12-27 | 2011-08-31 | 山东科技大学 | Silencer |
| CN202991663U (en) * | 2012-12-28 | 2013-06-12 | 重庆江增船舶重工有限公司 | Vent silencer for centrifugal blower or compressor |
| CN204003648U (en) * | 2014-08-11 | 2014-12-10 | 宜兴优纳特机械有限公司 | A kind of blower fan import baffler |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560052A (en) * | 2016-06-29 | 2018-01-09 | 魏霖静 | A kind of air exchange filter of computer room |
| CN107503822A (en) * | 2017-09-21 | 2017-12-22 | 永嘉县荣信科技有限公司 | A kind of automobile exhaust muffler |
| CN107503822B (en) * | 2017-09-21 | 2023-12-01 | 重庆广亚机械制造有限公司 | Automobile exhaust silencer |
| CN111727324A (en) * | 2018-02-28 | 2020-09-29 | 三电汽车空调系统株式会社 | Air blower |
| CN111727324B (en) * | 2018-02-28 | 2022-08-02 | 三电汽车空调系统株式会社 | Air blower |
| CN113280007A (en) * | 2021-05-27 | 2021-08-20 | 中车大连机车研究所有限公司 | Narrow-distance sound-absorbing insulator for magnetic suspension air blower |
| CN113280007B (en) * | 2021-05-27 | 2024-06-07 | 中车大连机车研究所有限公司 | Narrow-distance sound eliminating and insulating device for magnetic suspension blower |
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| Publication number | Publication date |
|---|---|
| CN105332953B (en) | 2017-06-16 |
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Denomination of invention: A fan inlet silencer Effective date of registration: 20220617 Granted publication date: 20170616 Pledgee: Bank of China Limited Yixing branch Pledgor: YIXING UNITE MACHINERY CO.,LTD. Registration number: Y2022980008162 |