CN101691875B - Active silencer for large underground reversible fan - Google Patents
Active silencer for large underground reversible fan Download PDFInfo
- Publication number
- CN101691875B CN101691875B CN2009101530625A CN200910153062A CN101691875B CN 101691875 B CN101691875 B CN 101691875B CN 2009101530625 A CN2009101530625 A CN 2009101530625A CN 200910153062 A CN200910153062 A CN 200910153062A CN 101691875 B CN101691875 B CN 101691875B
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- CN
- China
- Prior art keywords
- intake grill
- air inlet
- reverse
- forward direction
- reverse direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
- F04D19/005—Axial flow fans reversible fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
Abstract
The invention relates to an active silencer for a large underground reversible fan, belonging to the engineering technology field of fan and ventilation system, comprising a forward direction intake air flaring and a reverse direction intake air flaring, wherein the forward direction intake air flaring and the reverse direction intake air flaring are respectively installed on the forward direction air inlet and the reverse direction air inlet of a large underground reversible fan; the inner wall of the forward direction intake air flaring is provided with a forward direction air inlet acoustic sensor and a forward direction air inlet tone generator, wherein the forward direction air inlet acoustic sensor is provided with a forward direction air inlet acoustic signal receiving processor, and the forward direction air inlet tone generator is provided with a forward direction air inlet pronunciation driver; the inner wall of the reverse direction intake air flaring is provided with a reverse direction air inlet acoustic sensor and a reverse direction air inlet tone generator, wherein the reverse direction air inlet acoustic sensor is provided with a reverse direction air inlet acoustic signal receiving processor, and the reverse direction air inlet tone generator is provided with a reverse direction air inlet pronunciation driver; the forward direction air inlet acoustic signal receiving processor converts the acoustic signal into an analog signal to be sent to the reverse direction air inlet pronunciation driver; and the reverse direction air inlet acoustic signal receiving processor converts the acoustic signal into an analog signal to be sent to the forward direction air inlet pronunciation driver. The invention has favourable noise elimination effect, small volume and small energy consumption.
Description
Technical field
The noise that the present invention relates to a kind of large-scale reversible underground fan is eliminated, and refers in particular to a kind of active silencer for large underground reversible fan, belongs to blower fan and ventilation system field of engineering technology.
Background technique
As everyone knows, large underground reversible fan is imported and exported huge silencing apparatus all is installed, and is used for eliminating mechanical noise and the aerodynamic noise that fan operation produces.Usually the acoustic wave filter structure of large underground reversible fan is a strip-type silencer, and volume is bigger, occupies bigger space underground, and energy consumption is also very big.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of active silencer for large underground reversible fan effective, that volume is little, energy consumption is little of eliminating the noise.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of active silencer for large underground reversible fan, comprise and just be installed in large underground reversible fan respectively, the oppositely forward air intake enlarging on the intake grill, oppositely air intake enlarging, the forward intake grill sound transducer of band forward intake grill sound signal receiving processor is installed on the inwall of forward air intake enlarging, the forward intake grill sounder of band forward intake grill pronunciation driver, reverse intake grill sound transducer with reverse intake grill sound signal receiving processor oppositely is installed on the inwall of air intake enlarging, reverse intake grill sounder with reverse intake grill pronunciation driver, and forward intake grill sound signal receiving processor converts sound signal to analogue signal and sends to reverse intake grill pronunciation driver, and oppositely intake grill sound signal receiving processor converts sound signal to analogue signal and sends to forward intake grill pronunciation driver.
As the further setting of such scheme, the forward intake grill sounder of the forward intake grill sound transducer of two symmetrical distributions, two symmetrical distributions is installed on the inwall of described forward air intake enlarging; The reverse intake grill sounder of the reverse intake grill sound transducer of two symmetrical distributions, two symmetrical distributions oppositely is installed on the inwall of air intake enlarging.
Described two forward intake grill sounders lay respectively at the positive outside of two forward intake grill sound transducers, and two reverse intake grill sounders lay respectively at the positive outside of reverse intake grill sound transducer.
Active silencer for large underground reversible fan of the present invention, when the large underground reversible fan forward moves, its reverse intake grill sounder that is installed on the reverse intake grill of large underground reversible fan can send the secondary sound wave that the noise that is produced with large underground reversible fan disturbs mutually, offsets, so that the noise in the tunnel meets the requirements of level.This secondary sound wave is identical with the frequency noise that large underground reversible fan is produced, phase place opposite, equal and opposite in direction.When the large underground reversible fan inverted running, its forward intake grill sounder that is installed on the large underground reversible fan forward intake grill can send the secondary sound wave that the noise that is produced with large underground reversible fan disturbs mutually, offsets, so that the noise in the tunnel meets the requirements of level.Certainly, this secondary sound wave is also identical with the frequency noise that large underground reversible fan is produced, phase place opposite, equal and opposite in direction.
In a word, active silencer for large underground reversible fan of the present invention, eliminate the noise effective, volume is little, energy consumption is little.
The invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of preferred embodiment of the present invention;
Fig. 2 is the circuit diagram block diagram of Fig. 1.
Embodiment
As shown in Figure 1 and Figure 2, active silencer for large underground reversible fan of the present invention comprises the forward air intake enlarging 3, the oppositely air intake enlarging 2 that are installed in respectively on the large underground reversible fan 1 forward and reverse intake grill.
The forward intake grill sound transducer 6 of band forward intake grill sound signal receiving processor 12, the forward intake grill sounder 9 of band forward intake grill pronunciation driver 11 are installed on the inwall of forward air intake enlarging 3.For making the noise elimination effect better, forward intake grill sound transducer 6 is provided with two, and is symmetrically distributed; Forward intake grill sounder 9 is provided with two, and is symmetrically distributed.Simultaneously, two forward intake grill sounders 9 lay respectively at the positive outside of two forward intake grill sound transducers 6.
Reverse intake grill sound transducer 7 with reverse intake grill sound signal receiving processor 13 oppositely is installed on the inwall of air intake enlarging 2, with the reverse intake grill sounder 8 of reverse intake grill pronunciation driver 14.For making the noise elimination effect better, oppositely intake grill sound transducer 7 is provided with two, and is symmetrically distributed; Oppositely intake grill sounder 8 is provided with two, and is symmetrically distributed.Simultaneously, two reverse intake grill sounders 8 lay respectively at the positive outside of reverse intake grill sound transducer 7.
Wherein, forward intake grill sound signal receiving processor 12 converts sound signal to analogue signal and sends to reverse intake grill pronunciation driver 14, and oppositely intake grill sound signal receiving processor 13 converts sound signal to analogue signal and sends to forward intake grill pronunciation driver 11.
Below we introduce air-flow trend in the tunnel 10 first:
When large underground reversible fan 1 forward moved, air-flow was a positive draft direction 4, and 10 air channels enter forward air intake enlarging 3, large underground reversible fan 1, oppositely air intake enlarging 2,10 air channels, tunnel to air-flow from the tunnel.When large underground reversible fan 1 inverted running, air-flow is a back draught direction 5, and 10 air channels enter reverse air intake enlarging 2, large underground reversible fan 1, forward air intake enlarging 3,10 air channels, tunnel to air-flow from the tunnel.
And working principle of the present invention is as follows:
When large underground reversible fan 1 forward moves, of the present inventionly just changeing sound-attenuating system work.Forward intake grill sound transducer 6 passes to forward intake grill sound signal receiving processor 12 with the sound signal that receives, forward intake grill sound signal receiving processor 12 converts sound signal to analogue signal and sends to reverse intake grill pronunciation driver 14 then, at last drive reverse intake grill sounder 8 and send the secondary sound wave that the noise that produced with large underground reversible fan 1 disturbs mutually, offsets, so that the noises in the tunnel 10 meet the requirements of level by reverse intake grill pronunciation driver 14.This secondary sound wave is identical with the frequency noise that large underground reversible fan 1 is produced, phase place opposite, equal and opposite in direction.
When large underground reversible fan 1 inverted running, counter-rotating sound-attenuating system work of the present invention.Oppositely intake grill sound transducer 7 passes to reverse intake grill sound signal receiving processor 13 with the sound signal that receives, oppositely intake grill sound signal receiving processor 13 converts sound signal to analogue signal and sends to forward intake grill pronunciation driver 11 then, at last drive forward intake grill sounders 9 and send the secondary sound wave that the noise that produced with large underground reversible fan 1 disturbs mutually, offsets, so that the noises in the tunnel 10 meet the requirements of level by forward intake grill pronunciation driver 11.This secondary sound wave is identical with the frequency noise that large underground reversible fan 1 is produced, phase place opposite, equal and opposite in direction.
Need to prove at this, forward intake grill sound signal receiving processor 12, reverse intake grill sound signal receiving processor 13, forward intake grill pronunciation driver 11, reverse intake grill pronunciation driver 14, and computer real-time frequency, Phase Processing, power supply, turn to identification etc. to constitute the control gear 15 of active silencer for large underground reversible fan of the present invention jointly automatically.Because computer real-time frequency, Phase Processing, and power supply, turn to correlation technique such as identification to be existing conventional application technology automatically, therefore just seldom given unnecessary details at this.
The foregoing description only is used to the inventive concept of the present invention of explaining, but not to the qualification of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (3)
1. active silencer for large underground reversible fan, it is characterized in that: comprise just being installed in large underground reversible fan (1) respectively, the oppositely forward air intake enlarging (3) on the intake grill, oppositely air intake enlarging (2), the forward intake grill sound transducer (6) of band forward intake grill sound signal receiving processor (12) is installed on the inwall of forward air intake enlarging (3), the forward intake grill sounder (9) of band forward intake grill pronunciation driver (11), reverse intake grill sound transducer (7) with reverse intake grill sound signal receiving processor (13) oppositely is installed on the inwall of air intake enlarging (2), reverse intake grill sounder (8) with reverse intake grill pronunciation driver (14), and forward intake grill sound signal receiving processor (12) converts sound signal to analogue signal and sends to reverse intake grill pronunciation driver (14), and oppositely intake grill sound signal receiving processor (13) converts sound signal to analogue signal and sends to forward intake grill pronunciation driver (11).
2. active silencer for large underground reversible fan as claimed in claim 1 is characterized in that: the described forward intake grill sounder (9) that the described forward intake grill sound transducer (6) of two symmetrical distributions, two symmetrical distributions are installed on the inwall of described forward air intake enlarging (3); The described reverse intake grill sounder (8) of the described reverse intake grill sound transducer (7) of two symmetrical distributions, two symmetrical distributions oppositely is installed on the inwall of air intake enlarging (2).
3. active silencer for large underground reversible fan as claimed in claim 2, it is characterized in that: described two forward intake grill sounders (9) lay respectively at the positive outside of two forward intake grill sound transducers (6), and two reverse intake grill sounders (8) lay respectively at the positive outside of reverse intake grill sound transducer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101530625A CN101691875B (en) | 2009-09-28 | 2009-09-28 | Active silencer for large underground reversible fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101530625A CN101691875B (en) | 2009-09-28 | 2009-09-28 | Active silencer for large underground reversible fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101691875A CN101691875A (en) | 2010-04-07 |
| CN101691875B true CN101691875B (en) | 2011-07-20 |
Family
ID=42080585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101530625A Active CN101691875B (en) | 2009-09-28 | 2009-09-28 | Active silencer for large underground reversible fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101691875B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104165255B (en) * | 2013-05-17 | 2016-02-03 | 中国科学院声学研究所 | A kind of air pipeline active-passive composite silencing apparatus |
| CN104165256B (en) * | 2013-05-17 | 2016-02-03 | 中国科学院声学研究所 | A kind of active silencer for air pipeline system |
| CN105139844A (en) * | 2015-09-17 | 2015-12-09 | 四川迈铁龙科技有限公司 | Composite noise elimination apparatus for ventilation tunnel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3177949A (en) * | 1963-05-07 | 1965-04-13 | Lowell T Caston | Reversible fan |
| JP2001012391A (en) * | 1999-06-28 | 2001-01-16 | Matsushita Seiko Co Ltd | Jet fan for road tunnel ventilation |
| CN1064158C (en) * | 1993-07-07 | 2001-04-04 | 莱斯特里兹股份有限公司&废气处理技术公司 | Active sound damper |
| CN101308060A (en) * | 2008-06-20 | 2008-11-19 | 浙江金盾风机风冷设备有限公司 | Subway ventilating system simulation test device |
| CN201517525U (en) * | 2009-09-28 | 2010-06-30 | 浙江金盾风机风冷设备有限公司 | Active muffler used for large-scale reversible blower in subway |
-
2009
- 2009-09-28 CN CN2009101530625A patent/CN101691875B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3177949A (en) * | 1963-05-07 | 1965-04-13 | Lowell T Caston | Reversible fan |
| CN1064158C (en) * | 1993-07-07 | 2001-04-04 | 莱斯特里兹股份有限公司&废气处理技术公司 | Active sound damper |
| JP2001012391A (en) * | 1999-06-28 | 2001-01-16 | Matsushita Seiko Co Ltd | Jet fan for road tunnel ventilation |
| CN101308060A (en) * | 2008-06-20 | 2008-11-19 | 浙江金盾风机风冷设备有限公司 | Subway ventilating system simulation test device |
| CN201517525U (en) * | 2009-09-28 | 2010-06-30 | 浙江金盾风机风冷设备有限公司 | Active muffler used for large-scale reversible blower in subway |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101691875A (en) | 2010-04-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG JINDUN FAN CO., LTD. Free format text: FORMER OWNER: ZHEJIANG JINDUN BLOWER COOLING EQUIPMENT CO., LTD. Effective date: 20111212 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 312367 SHAOXING, ZHEJIANG PROVINCE TO: 312363 SHAOXING, ZHEJIANG PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20111212 Address after: 312363 Zhang Zhen Industrial Zone, Zhejiang, Shangyu Patentee after: Zhejiang Jindun Fans Holding Co., Ltd. Address before: 312367 Small Town Industrial Zone, Zhejiang, Shangyu Patentee before: Zhejiang Jindun Blower Cooling Equipment Co., Ltd. |