CN104165164A - Sound reducing enclosure of air blower and sound reducing method of sound reducing enclosure of air blower - Google Patents
Sound reducing enclosure of air blower and sound reducing method of sound reducing enclosure of air blower Download PDFInfo
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- CN104165164A CN104165164A CN201410438292.7A CN201410438292A CN104165164A CN 104165164 A CN104165164 A CN 104165164A CN 201410438292 A CN201410438292 A CN 201410438292A CN 104165164 A CN104165164 A CN 104165164A
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- noise reduction
- bent plate
- emptying
- reduction bent
- silencing cavity
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Abstract
The invention discloses a sound reducing enclosure of an air blower and a sound reducing method of the sound reducing enclosure of the air blower, and belongs to the field of air blowers. The sound reducing enclosure of the air blower comprises a motor hot-air sound reducing cavity, an evacuation sound reducing cavity and a middle partition plate for partitioning the motor hot-air sound reducing cavity and the evacuation sound reducing cavity. A motor hot-air inlet pipe communicated with the motor hot-air sound reducing cavity is arranged on the bottom wall of the sound reducing enclosure, and an evacuation air inlet communicated with the evacuation sound reducing cavity is formed in the front wall of the sound reducing box. When the sound reducing enclosure of the air blower is adopted, air flows through S-shaped flow passes when flowing in the motor hot-air sound reducing cavity and the evacuation sound reducing cavity, sound reducing cotton is pasted to the surfaces of the S-shaped flow passes, the cooling air enters a main machine to cool a stator, a rotor and the like, noise generated by the rotor can be outwards transmitted along a cooling air pipe and reflected in the S-shaped flow passes multiple times to be absorbed, and the good sound reducing effect is achieved.
Description
Technical field:
The present invention relates to a kind of blower Sound Attenuator and noise reduction method thereof, it belongs to blower field.
Background technique:
Blower is widely used in the industry such as environmental protection, process industry, but traditional drum blower fan is in operation, motor and impeller can produce very large noise, and in existing blower, conventionally by a silencing cavity is set in Sound Attenuator, now motor hot blast enters into silencing cavity and carries out noise reduction.Simultaneously, before not reaching specified air pressure, blower needs emptying, emptying gas is now also to enter into silencing cavity to carry out noise reduction, motor hot blast and emptying gas all in same Sound Attenuator drawback when noise reduction be that the gas of emptying is because pressure height can enter motor hot blast silencing cavity and then go here and there in motor along motor hot blast air intake pipe, and the gas temperature of emptying is higher, cause motor normally not dispel the heat, motor can temperature raise.
Therefore, the necessary deficiency of prior art being improved to solve prior art.
Summary of the invention:
The present invention, in order to overcome the deficiencies in the prior art, proposes a kind of by motor hot blast silencing cavity and the separated blower Sound Attenuator of emptying silencing cavity and noise reduction method thereof.
The present invention adopts following technological scheme: a kind of blower Sound Attenuator, it comprises motor hot blast silencing cavity, emptying silencing cavity, and by motor hot blast silencing cavity and the mutually separated intermediate clapboard of emptying silencing cavity, on the diapire of described Sound Attenuator, be provided with a motor hot blast air intake pipe connecting with motor hot blast silencing cavity, on the antetheca of described Sound Attenuator, be provided with an emptying intake grill connecting with emptying silencing cavity, described motor hot blast silencing cavity comprises separated its inner space the first noise reduction bent plate, the second noise reduction bent plate and the 3rd noise reduction bent plate, described the first noise reduction bent plate is installed on the rear wall and sidewall of described motor hot blast silencing cavity, the diapire of described the first noise reduction bent plate and motor hot blast silencing cavity and antetheca is alternate separates, described the second noise reduction bent plate is installed on the antetheca and sidewall of motor hot blast silencing cavity, alternate the separating of rear wall of described the second noise reduction bent plate and motor hot blast silencing cavity, described the second noise reduction bent plate is positioned at the top of the first noise reduction bent plate and with first noise reduction bent plate is alternate separates, described the 3rd noise reduction bent plate is installed on the antetheca and sidewall of motor hot blast silencing cavity, described the 3rd noise reduction bent plate is close to the top of described the second noise reduction bent plate, described emptying silencing cavity comprises separated its inner space the first emptying noise reduction bent plate, the second emptying noise reduction bent plate and the 3rd emptying noise reduction bent plate, described the first emptying noise reduction bent plate is welded on the sidewall and diapire of emptying silencing cavity, alternate the separating of antetheca of the first emptying noise reduction bent plate and emptying silencing cavity, the second emptying noise reduction bent plate is welded on the sidewall of emptying silencing cavity, the second emptying noise reduction bent plate be positioned at the rear of described the first emptying noise reduction bent plate and with the first alternate separating of emptying noise reduction bent plate, the second emptying noise reduction bent plate and emptying silencing cavity diapire and rear wall is alternate separates, the 3rd emptying noise reduction bent plate is positioned at the top of the second emptying noise reduction bent plate, and together with the 3rd emptying noise reduction bent plate is close to the second emptying noise reduction bent plate, the 3rd emptying noise reduction bent plate and the first alternate separating of emptying noise reduction bent plate.
Further, between described the 3rd noise reduction bent plate and motor hot blast silencing cavity rear wall, distance separately equals between the second noise reduction bent plate and motor hot blast silencing cavity rear wall distance separately.
Further, described the first noise reduction bent plate is identical with the structure of the second noise reduction bent plate.
Further, on the surface of described the first noise reduction bent plate, the second noise reduction bent plate, the 3rd noise reduction bent plate, post silencing cotton.
Further, between described the second emptying noise reduction bent plate and emptying silencing cavity rear wall, distance separately equals between the 3rd emptying noise reduction bent plate and emptying silencing cavity rear wall distance separately.
Further, described the first emptying noise reduction bent plate is identical with the structure of the second emptying noise reduction bent plate.
Further, on the surface of described the first emptying noise reduction bent plate, the second emptying noise reduction bent plate and the 3rd emptying noise reduction bent plate, post silencing cotton.
The present invention also adopts following technological scheme: a kind of noise reduction method of blower Sound Attenuator, wherein:
In motor hot blast silencing cavity, gas flow step is: outside gap-outflow motor hot blast silencing cavity in gap between the second noise reduction bent plate and motor hot blast silencing cavity rear wall, gap between the second noise reduction bent plate and the first noise reduction bent plate, gap between the first noise reduction bent plate and motor hot blast silencing cavity antetheca, gap between the first noise reduction bent plate and motor hot blast silencing cavity diapire of motor hot blast air intake pipe-flow through-flow through-flow through-flow through-flow through between the 3rd noise reduction bent plate and motor hot blast silencing cavity rear wall;
In emptying silencing cavity, gas flow step is: outside the gap-outflow emptying silencing cavity between gap-tri-emptying noise reduction bent plates and emptying silencing cavity rear wall between the gap-the first emptying noise reduction bent plate between gap-the first emptying noise reduction bent plate and the 3rd emptying noise reduction bent plate between emptying intake grill-emptying silencing cavity antetheca and the first emptying noise reduction bent plate and the gap-the second emptying noise reduction bent plate between the second emptying noise reduction bent plate and gap-the second emptying noise reduction bent plate and the emptying silencing cavity rear wall between emptying silencing cavity diapire.
The present invention has following beneficial effect: while adopting blower Sound Attenuator of the present invention, gas has all passed through respectively S type runner while flowing in motor hot blast silencing cavity and two chambers of emptying silencing cavity, silencing cotton is posted on the surface of S type runner, cooling air enters the cooling stator of main frame and rotor etc., the noise that rotor sends can be along the pipeline of cooling air toward unofficial biography, in S type runner, be absorbed through multiple reflections, played good erasure effect.
Brief description of the drawings:
Fig. 1 is the three-dimensional structure diagram of blower Sound Attenuator of the present invention.
Fig. 2 is another visual angle three-dimensional structure diagram of blower Sound Attenuator shown in Fig. 1.
Fig. 3 is the sectional view of the motor hot blast silencing cavity in blower Sound Attenuator shown in Fig. 1.
Fig. 4 is the first noise reduction bent plate in motor hot blast silencing cavity and the structural drawing of the second noise reduction bent plate.
Fig. 5 is the structural drawing of the 3rd noise reduction bent plate in motor hot blast silencing cavity,
Fig. 6 is gas flow schematic diagram in motor hot blast silencing cavity.
Fig. 7 is the sectional view of the emptying silencing cavity in blower Sound Attenuator shown in figure.
Fig. 8 is the structural drawing of the first emptying noise reduction bent plate and the second emptying noise reduction bent plate in emptying silencing cavity.
Fig. 9 is the structural drawing of the 3rd emptying noise reduction bent plate in emptying silencing cavity.
Figure 10 is gas flow schematic diagram in emptying silencing cavity.
Wherein:
1-motor hot blast silencing cavity; 2-emptying silencing cavity; 3-motor hot blast air intake pipe; 4-emptying intake grill; 5-intermediate clapboard; 6-the first noise reduction bent plate; 60-the first screw; 7-the second noise reduction bent plate; 70-the second screw; 8-the 3rd noise reduction bent plate; 80-the 3rd noise reduction bent plate antetheca; 81-the 3rd noise reduction bent plate sidewall; 82-the 3rd noise reduction bent plate rear wall; 83-supporting element; 84-the 3rd screw; 9-the first emptying noise reduction bent plate; 90-the first emptying noise reduction bent plate antetheca; 91-the first emptying noise reduction bent plate sidewall; 92-the first emptying noise reduction bent plate rear wall; 93-joint; 10-the second emptying noise reduction bent plate; 11-the 3rd emptying noise reduction bent plate; 110-the 3rd emptying noise reduction bent plate roof; 111-the 3rd emptying noise reduction bent plate sidewall; 112-the 3rd emptying noise reduction bent plate rear wall; 113-the 3rd emptying noise reduction bent plate antetheca; 114-the 4th screw; 115-the 3rd emptying noise reduction bent plate diapire.
Embodiment:
Please refer to shown in Fig. 1 and Fig. 2, blower Sound Attenuator of the present invention comprises motor hot blast silencing cavity 1, emptying silencing cavity 2 and by mutually separated to motor hot blast silencing cavity 1 and emptying silencing cavity 2 intermediate clapboard 5.Wherein on the diapire of Sound Attenuator, be provided with a motor hot blast air intake pipe 3 connecting with motor hot blast silencing cavity 1, on the antetheca of Sound Attenuator, be provided with an emptying intake grill 4 connecting with emptying silencing cavity 2.
Please refer to shown in Fig. 3 to Fig. 5, include altogether three separated noise reduction bent plates in the inner space by motor hot blast silencing cavity 1 in motor hot blast silencing cavity 1, wherein noise reduction bent plate herein comprises the first noise reduction bent plate 6, the second noise reduction bent plate 7 and the 3rd noise reduction bent plate 8.Wherein the first noise reduction bent plate 6 is identical with the structure of the second noise reduction bent plate 7, taking the first noise reduction bent plate 6 as example, specifically sets forth the structure of the first noise reduction bent plate 6 below.The first noise reduction bent plate 6 be shaped as rectangular-shaped structure, and the first noise reduction bent plate 6 that hollow out for upper and lower surface and inner be also the structure of hollow shape, be provided with one in the inside of the first noise reduction bent plate 6 and be welded in dividing plate (not indicating) on the first noise reduction bent plate 6 madial walls and that the first noise reduction bent plate 6 is divided into upper and lower two parts.On the two side of the first noise reduction bent plate 6, be formed with several the first screws 60.Same, the shape of the second noise reduction bent plate 7 and structure can be with reference to the shape of the first noise reduction bent plate 6 and structures.
The 3rd noise reduction bent plate 8 comprise the 3rd noise reduction bent plate antetheca 80, from two ends of the 3rd noise reduction bent plate antetheca 80 bend backward two the 3rd noise reduction bent plate sidewalls 81 extending to form, from the end of two the 3rd noise reduction bent plate sidewalls 81 along the direction parallel with the 3rd noise reduction bent plate antetheca 80 two the 3rd noise reduction bent plate rear walls 82 that extend to form that bend inwards, wherein alternate the separating of end of two the 3rd noise reduction bent plate rear walls 82.On the inwall of the 3rd noise reduction bent plate antetheca 80, be provided with one " work " font supporting element 83, on the 3rd noise reduction bent plate antetheca 80 and the 3rd noise reduction bent plate sidewall 81, be all formed with several the 3rd screws 84.
In the motor hot blast silencing cavity of Sound Attenuator of the present invention, by the first screw 60, the first noise reduction bent plate 6 is installed on simultaneously on the rear wall internal face and sidewall internal face of motor hot blast silencing cavity, now alternate the separating of antetheca internal face of the first noise reduction bent plate 6 and motor hot blast silencing cavity.The second noise reduction bent plate 7 is installed on simultaneously on the antetheca internal face and sidewall internal face of motor hot blast silencing cavity by the second screw 70, now alternate the separating of rear wall internal face of the second noise reduction bent plate 7 and motor hot blast silencing cavity, the second noise reduction bent plate 7 is alternate separating between the top position of the first noise reduction bent plate 6 and the second noise reduction bent plate 7 and the first noise reduction bent plate 6.The 3rd noise reduction bent plate 8 is installed on simultaneously on the antetheca internal face and sidewall internal face of motor hot blast silencing cavity by the 3rd screw 84, wherein the 3rd noise reduction bent plate antetheca 80 is installed on the antetheca internal face of motor hot blast silencing cavity, and the 3rd noise reduction bent plate 8 is positioned at together with the second noise reduction bent plate 7 tops and the 3rd noise reduction bent plate 8 be close to the second noise reduction bent plate 7.Between the 3rd noise reduction bent plate 8 and motor hot blast silencing cavity rear wall internal face, distance separately equals between the second noise reduction bent plate 7 and motor hot blast silencing cavity rear wall internal face distance separately.
Please refer to Fig. 3 to Fig. 5 and in conjunction with shown in Fig. 6, in motor hot blast silencing cavity, gas flow is as follows: motor hot blast air intake pipe 3-flows through outside gap-outflow motor hot blast silencing cavity in gap between the second noise reduction bent plate 7 and motor hot blast silencing cavity rear wall internal face, gap between the second noise reduction bent plate 7 and the first noise reduction bent plate 6, gap between the first noise reduction bent plate 6 and motor hot blast silencing cavity antetheca internal face, gap between the first noise reduction bent plate 6 and motor hot blast silencing cavity diapire internal face-flow through-flow through-flow through-flow through between the 3rd noise reduction bent plate 8 and motor hot blast silencing cavity rear wall internal face.
Please refer to shown in Fig. 7, in emptying silencing cavity 2, include altogether three the separated emptying noise reduction in the inner space by emptying silencing cavity 2 bent plates, wherein emptying noise reduction bent plate herein comprises the first emptying noise reduction bent plate 9, the second emptying noise reduction bent plate 10 and the 3rd emptying noise reduction bent plate 11.Wherein the first emptying noise reduction bent plate 9 is identical with the structure of the second emptying noise reduction bent plate 10, taking the first emptying noise reduction bent plate 9 as example, specifically sets forth the structure of the first emptying noise reduction bent plate 9 below.The first emptying noise reduction bent plate 9 comprises the first emptying noise reduction bent plate antetheca 90, bend backward the first emptying noise reduction bent plate sidewall 91 extending to form and bend from the end of two the first emptying noise reduction bent plate sidewalls 91 two the first emptying noise reduction bent plate rear walls 92 that extend to form along the direction parallel with the first emptying noise reduction bent plate antetheca 90 from two ends of the first emptying noise reduction bent plate antetheca 90, and connection joints 93 two the first emptying noise reduction bent plate rear walls 92 and that parallel with the first emptying noise reduction bent plate antetheca 90, wherein the first emptying noise reduction bent plate 9 and the second emptying noise reduction bent plate 10 are welded in emptying silencing cavity.
The 3rd emptying noise reduction bent plate 11 comprises the 3rd emptying noise reduction bent plate roof 110, upwards bends two the 3rd emptying noise reduction bent plate sidewalls 111 extending to form, front and back two ends bending extends to form respectively the 3rd emptying noise reduction bent plate antetheca 113 and the 3rd emptying noise reduction bent plate rear wall 112 from the 3rd emptying noise reduction bent plate roof downwards from left and right two ends of the 3rd emptying noise reduction bent plate roof 110.From the end of the 3rd emptying noise reduction bent plate rear wall 112 and the 3rd emptying noise reduction bent plate antetheca 113 respectively along the direction parallel with the 3rd emptying noise reduction bent plate roof 110 two the 3rd emptying noise reduction bent plate diapires 115 that extend to form that bend inwards, wherein alternate the separating of end of two the 3rd emptying noise reduction bent plate diapires 115.On the 3rd emptying noise reduction bent plate sidewall 111, be formed with several the 3rd emptying noise reduction bent plate 11 is installed on to the 4th screw 114 on emptying silencing cavity sidewall.
Please refer to shown in Fig. 7 to Fig. 9 and in conjunction with shown in Figure 10, the first emptying noise reduction bent plate 9 is welded on the sidewall internal face of emptying silencing cavity 2, the first emptying noise reduction bent plate antetheca 90 parallels with the antetheca of emptying silencing cavity, the lower limb of the first emptying noise reduction bent plate antetheca 90 is close to the diapire internal face of emptying silencing cavity 2, and the alternate segment distance that is separated with between the first emptying noise reduction bent plate antetheca 90 and emptying intake grill 4.The second emptying noise reduction bent plate 10 is welded on the sidewall internal face of emptying silencing cavity 2 and is positioned at the rear of the first emptying noise reduction bent plate 9, alternate separating between the second emptying noise reduction bent plate 10 and the first emptying noise reduction bent plate 9, the first emptying noise reduction bent plate antetheca parallels setting with the second emptying noise reduction bent plate antetheca, alternate separating between the second emptying noise reduction bent plate antetheca lower limb and the diapire internal face of emptying silencing cavity, simultaneously alternate separating between second joint of emptying noise reduction bent plate and the rear wall internal face of emptying silencing cavity.The 3rd emptying noise reduction bent plate 11 is installed on the sidewall of emptying silencing cavity by the 4th screw 114, the 3rd emptying noise reduction bent plate 11 is positioned at the top of the second emptying noise reduction bent plate 10, and together with the 3rd emptying noise reduction bent plate 11 is close to the second emptying noise reduction bent plate 10, the 3rd emptying noise reduction bent plate 11 and the first 9 alternate separating of emptying noise reduction bent plate.Wherein the 3rd emptying noise reduction bent plate antetheca 113 is close on the antetheca internal face of emptying silencing cavity, and the 3rd emptying noise reduction bent plate rear wall 112 vertically aligns mutually with the joint of the second emptying noise reduction bent plate.
Please refer to shown in Fig. 7 to Fig. 9 and in conjunction with shown in Figure 10, in emptying silencing cavity, gas flow is as follows: outside the gap-tri-emptying noise reduction bent plates 11 between gap-the second emptying noise reduction bent plate 10 and emptying silencing cavity rear wall internal face before the gap-the first emptying noise reduction bent plate 9 between gap-the first emptying noise reduction bent plate 9 and the 3rd emptying noise reduction bent plate 11 between emptying intake grill-emptying silencing cavity antetheca internal face and the first emptying noise reduction bent plate 9 and the gap-the second emptying noise reduction bent plate 10 between the second emptying noise reduction bent plate 10 and emptying silencing cavity diapire internal face and the gap-outflow emptying silencing cavity between emptying silencing cavity rear wall internal face.
As a further improvement on the present invention, can on the surface of noise reduction bent plate and emptying noise reduction bent plate, post silencing cotton and then strengthen further erasure effect.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make under the premise without departing from the principles of the invention some improvement, and these improve and also should be considered as protection scope of the present invention.
Claims (8)
1. a blower Sound Attenuator, it comprises motor hot blast silencing cavity (1), emptying silencing cavity (2), and by motor hot blast silencing cavity (1) and the mutually separated intermediate clapboard of emptying silencing cavity (2) (5), it is characterized in that: on the diapire of described Sound Attenuator, be provided with a motor hot blast air intake pipe (3) connecting with motor hot blast silencing cavity (1), on the antetheca of described Sound Attenuator, be provided with an emptying intake grill (4) connecting with emptying silencing cavity (2), described motor hot blast silencing cavity (1) comprises separated its inner space the first noise reduction bent plate (6), the second noise reduction bent plate (7) and the 3rd noise reduction bent plate (8), described the first noise reduction bent plate (6) is installed on the rear wall and sidewall of described motor hot blast silencing cavity (1), the diapire of described the first noise reduction bent plate (6) and motor hot blast silencing cavity (1) and antetheca is alternate separates, described the second noise reduction bent plate (7) is installed on the antetheca and sidewall of motor hot blast silencing cavity (1), alternate the separating of rear wall of described the second noise reduction bent plate and motor hot blast silencing cavity (1), described the second noise reduction bent plate (7) be positioned at the top of the first noise reduction bent plate (6) and with the first alternate separating of noise reduction bent plate (6), described the 3rd noise reduction bent plate (8) is installed on the antetheca and sidewall of motor hot blast silencing cavity (1), described the 3rd noise reduction bent plate (8) is close to the top of described the second noise reduction bent plate (7), described emptying silencing cavity (2) comprises separated its inner space the first emptying noise reduction bent plate (9), the second emptying noise reduction bent plate (10) and the 3rd emptying noise reduction bent plate (11), described the first emptying noise reduction bent plate (9) is welded on the sidewall and diapire of emptying silencing cavity (2), alternate the separating of antetheca of the first emptying noise reduction bent plate (9) and emptying silencing cavity (2), the second emptying noise reduction bent plate (10) is welded on the sidewall of emptying silencing cavity (2), the second emptying noise reduction bent plate (10) be positioned at the rear of described the first emptying noise reduction bent plate (9) and with the first alternate separating of emptying noise reduction bent plate (9), the second emptying noise reduction bent plate (10) and emptying silencing cavity (2) diapire and rear wall is alternate separates, the 3rd emptying noise reduction bent plate (11) is positioned at the top of the second emptying noise reduction bent plate (10), and together with the 3rd emptying noise reduction bent plate (11) is close to the second emptying noise reduction bent plate (10), the 3rd emptying noise reduction bent plate (11) and the first alternate separating of emptying noise reduction bent plate (9).
2. blower Sound Attenuator as claimed in claim 1, is characterized in that: between described the 3rd noise reduction bent plate (8) and motor hot blast silencing cavity rear wall, distance separately equals between the second noise reduction bent plate (7) and motor hot blast silencing cavity rear wall distance separately.
3. blower Sound Attenuator as claimed in claim 2, is characterized in that: described the first noise reduction bent plate (6) is identical with the structure of the second noise reduction bent plate (7).
4. blower Sound Attenuator as claimed in claim 2 or claim 3, is characterized in that: on the surface of described the first noise reduction bent plate (6), the second noise reduction bent plate (7), the 3rd noise reduction bent plate (8), post silencing cotton.
5. blower Sound Attenuator as claimed in claim 1, is characterized in that: between described the second emptying noise reduction bent plate (10) and emptying silencing cavity (2) rear wall, distance separately equals between the 3rd emptying noise reduction bent plate (11) and emptying silencing cavity (2) rear wall distance separately.
6. blower Sound Attenuator as claimed in claim 5, is characterized in that: described the first emptying noise reduction bent plate (9) is identical with the structure of the second emptying noise reduction bent plate (10).
7. the blower Sound Attenuator as described in claim 5 or 6, is characterized in that: on the surface of described the first emptying noise reduction bent plate (9), the second emptying noise reduction bent plate (10) and the 3rd emptying noise reduction bent plate (11), post silencing cotton.
8. a noise reduction method for blower Sound Attenuator, is characterized in that:
In motor hot blast silencing cavity, gas flow step is: motor hot blast air intake pipe, (3)-first noise reduction the bent plate of flowing through, (6) gap-first noise reduction bent plate of flowing through and between motor hot blast silencing cavity diapire, (6) gap-second noise reduction bent plate of flowing through and between motor hot blast silencing cavity antetheca, (7) and the first noise reduction bent plate, (6) gap-second noise reduction bent plate of flowing through between, (7) gap-the 3rd noise reduction bent plate of flowing through and between motor hot blast silencing cavity rear wall, (8) outside the gap-outflow motor hot blast silencing cavity and between motor hot blast silencing cavity rear wall,
In emptying silencing cavity, gas flow step is: outside the gap-outflow emptying silencing cavity between gap-tri-emptying noise reduction bent plates (11) and emptying silencing cavity rear wall between the gap-the first emptying noise reduction bent plate (9) between gap-the first emptying noise reduction bent plate (9) and the 3rd emptying noise reduction bent plate (11) between emptying intake grill-emptying silencing cavity antetheca and the first emptying noise reduction bent plate (9) and the gap-the second emptying noise reduction bent plate (10) between the second emptying noise reduction bent plate (10) and gap-the second emptying noise reduction bent plate (10) and the emptying silencing cavity rear wall between emptying silencing cavity diapire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438292.7A CN104165164B (en) | 2014-08-29 | 2014-08-29 | A kind of blower Sound Attenuator and noise reduction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410438292.7A CN104165164B (en) | 2014-08-29 | 2014-08-29 | A kind of blower Sound Attenuator and noise reduction method thereof |
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| Publication Number | Publication Date |
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| CN104165164A true CN104165164A (en) | 2014-11-26 |
| CN104165164B CN104165164B (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410438292.7A Active CN104165164B (en) | 2014-08-29 | 2014-08-29 | A kind of blower Sound Attenuator and noise reduction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128579A1 (en) * | 2019-12-25 | 2021-07-01 | 南京磁谷科技股份有限公司 | Double-exhaust-outlet silencing box for magnetic levitation blower |
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| CN202646177U (en) * | 2012-06-20 | 2013-01-02 | 山西渝煤科安运风机有限公司 | Low-noise mine ventilator |
| CN203756612U (en) * | 2013-12-27 | 2014-08-06 | 山西巨龙风机有限公司 | Silencing box for single level high speed fan |
| CN204061347U (en) * | 2014-08-29 | 2014-12-31 | 南京磁谷科技有限公司 | A kind of blower Sound Attenuator |
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2014
- 2014-08-29 CN CN201410438292.7A patent/CN104165164B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201428611Y (en) * | 2009-06-18 | 2010-03-24 | 宜兴优纳特机械有限公司 | Routs blower vent-port impedance composite-type combined muffler with base |
| CN202579348U (en) * | 2012-04-13 | 2012-12-05 | 李先保 | Mining counter-rotating local ventilating fan with a plurality of mufflers |
| CN202646177U (en) * | 2012-06-20 | 2013-01-02 | 山西渝煤科安运风机有限公司 | Low-noise mine ventilator |
| CN203756612U (en) * | 2013-12-27 | 2014-08-06 | 山西巨龙风机有限公司 | Silencing box for single level high speed fan |
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| WO2021128579A1 (en) * | 2019-12-25 | 2021-07-01 | 南京磁谷科技股份有限公司 | Double-exhaust-outlet silencing box for magnetic levitation blower |
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| Publication number | Publication date |
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| CN104165164B (en) | 2016-04-20 |
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Address after: 211102 No.99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |