CN103912753A - Pipe-expanding-type silencer - Google Patents
Pipe-expanding-type silencer Download PDFInfo
- Publication number
- CN103912753A CN103912753A CN201410163831.0A CN201410163831A CN103912753A CN 103912753 A CN103912753 A CN 103912753A CN 201410163831 A CN201410163831 A CN 201410163831A CN 103912753 A CN103912753 A CN 103912753A
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- CN
- China
- Prior art keywords
- pipe
- baffle plate
- type silencer
- trumpet type
- flow
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/027—Throttle passages
- F16L55/02709—Throttle passages in the form of perforated plates
- F16L55/02718—Throttle passages in the form of perforated plates placed transversely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/04—Devices damping pulsations or vibrations in fluids
Abstract
The invention provides a pipe-expanding-type silencer and aims at solving the problem that pipe-expanding-type silencers are poor in effect on eliminating noise generated by airflow pressure pulsation in the prior art. The pipe-expanding-type silencer comprises a pipe. A cavity used for allowing airflow to pass is defined by the pipe. A first retaining plate, which is transverse relative the axial direction of the pipe, is arranged in the cavity in a manner of being capable of axially moving relative to the pipe. One end of an elastic connecting member is fixed to the first retaining plate while the other end of the same is fixed to an attaching device on or in the pipe to enable the elastic connecting member to be capable of extending and contracting axially. An airflow passing portion allowing the airflow to penetrate axially is arranged on the first retaining plate. Compared with existing pipe-expanding-type silencers, the pipe-expanding-type silencer has the advantages of being better in silencing effect and having good effect on eliminating the noise generated by pressure pulsation.
Description
Technical field
The present invention relates to expand trumpet type silencer.
Background technique
In refrigeration system, conventional baffler mostly is expansion trumpet type silencer at present.Expanding trumpet type silencer is one of the most frequently used structural type of resistant noise-reducing device, and its main noise reduction principle is: utilize the abrupt change of cross-section of pipeline to cause that acoustic impedance changes, make the acoustic reflection echogenicity of a part along pipe transmmision; Meanwhile, by the variation of chamber, chamber and/or inner connecting tube length etc., make to produce phase difference between the sound wave propagated forward and reflected wave on different tube sections, mutually interfere, thereby reach the object of noise reduction.
Expander formula muffler structure is simple, but erasure effect is to be improved.Especially, existing expansion trumpet type silencer is only realized acoustic reflection, is interfered to realize noise reduction object by sudden change place and pipe, the chamber combination of acoustic characteristic in pipeline, is not fine for eliminating the noise result being produced by stream pressure pulsation.
Fig. 1 has schematically shown a kind of expansion trumpet type silencer of prior art.In pipeline shown in Fig. 1, can there is sudden change place (not shown), for example abrupt interface, and/or some arrange (not shown), for example pipe, chamber arrange, and depend on noise reduction requirement.Air-flow enters pipeline from one end of pipeline; By in the process of pipeline, because sudden change place in pipeline and/or other arrange, acoustic reflection and/or interference occur at air-flow, realize thus noise reduction, the air-flow that makes to flow out the pipeline the other end has the noise of reduction.
Summary of the invention
The object of this invention is to provide a kind of expansion trumpet type silencer that improves silencing function, there is good erasure effect for the noise of stream pressure pulsation generation that has.
According to an aspect of the present invention, a kind of trumpet type silencer that expands is provided, this expansion trumpet type silencer comprises a pipe, described pipe limits a chamber that air feed stream passes through, it is characterized in that, first baffle plate is being axially arranged in described chamber transverse to described pipe in the mode with respect to the axial motion of described pipe energy, a Flexible Connector one end is fixed to described the first baffle plate, the other end is fixed on described pipe or an interior attachment location, make the described Flexible Connector can be along described axial stretching, on wherein said the first baffle plate, there is the air-flow that allows air-flow to be upward through it at described axle and pass through portion.
Than existing expansion trumpet type silencer, expansion trumpet type silencer of the present invention is by setting up the elastic equilibrium mechanism being made up of baffle plate and Flexible Connector, absorption pressure pulses to eliminate the noise that pressure pulsation produces at least in part, single-unit baffler can be become to two joints or multi-section serial baffler more simultaneously, thereby there is the soundproof effect of raising.
Accompanying drawing explanation
Fig. 1 has schematically shown a kind of expansion trumpet type silencer of prior art.
Fig. 2 has schematically shown the exemplary expansion trumpet type silencer of one according to the present invention.
Fig. 3 has schematically shown the side view of baffle plate used in the expansion trumpet type silencer of Fig. 2.
Embodiment
Thought of the present invention is, increases elastic equilibrium mechanism and absorb at least in part, eliminate stream pressure and pulse to eliminate the noise that pressure pulsation produces in baffler, single-unit baffler become to two joints or multi-section serial baffler more simultaneously, improves soundproof effect.
Expansion trumpet type silencer of the present invention has mainly been done following improvement on the basis of the expansion trumpet type silencer of prior art: flow the indoor elastic equilibrium mechanism being made up of baffle plate and Flexible Connector that sets up of the duct chamber of passing through at air feed, make along pipeline axial, pipeline chamber to be separated into two or more sub-series chambers by baffle plate, make to pulse in response to stream pressure simultaneously, Flexible Connector is elastic telescopic distortion on pipeline axial, cause baffle plate to move to change the volume of the sub-chamber that first air-flow pass through with respect to pipeline axial, thereby absorb, subdue pressure pulsation, keep pipeline exit pressure constant.
Fig. 2 has schematically shown the exemplary expansion trumpet type silencer of one according to the present invention, and Fig. 3 has schematically shown the side view of baffle plate used in the expansion trumpet type silencer of Fig. 2.
As shown in Figure 2, this baffler comprises pipe 1, right baffle-plate 2, right baffle plate 2 and Flexible Connector 3.Pipe 1 limits a chamber that air feed stream passes through, each baffle plate 2 is with mode being axially arranged in this chamber transverse to this pipe with respect to pipe 1 energy axial motion, Flexible Connector 3 one end are fixed to right baffle-plate 2, the other end is fixed to right baffle plate 2, and Flexible Connector can be out of shape along the axial stretching of pipe 1.Right baffle-plate 2 and right baffle plate 2 are axially spaced along pipe 1.By left and right baffle plate 2, the chamber of pipe 1 is separated into the sub-chamber of three series connection: be respectively from left to right left sub-chamber, dynatron chamber and right sub-chamber; , single-unit baffler becomes three joint bafflers.
On each baffle plate 2, there is the air-flow that allows air-flow to be upward through it at the axle of pipe 1 and pass through portion.This air-flow can be through hole by portion, as shown in Figure 3; Or this air-flow can be the recess that is positioned at baffle plate periphery by portion.
The baffler working principle of Fig. 2 is as follows.
Enter baffler as example take air-flow from managing 1 for example left port (import), air-flow enters after baffler, first by left sub-chamber, impacts right baffle-plate 2.If there is stream pressure pulsation, in the time that stream pressure increases, right baffle-plate 2 pressure elasticity links 3, cause Flexible Connector 3 elastic compression distortion, thereby the left sub-chamber volume that first air-flow passes through increases, can subdue thus pressure pulsation, absorption pressure pulsation energy, the pressure that the another port (outlet) of assurance pipe 1 is located is constant as far as possible; In the time that stream pressure reduces, Flexible Connector 3 elastic elongations, promote right baffle-plate 2, the left sub-chamber volume that first air-flow passes through is reduced, thereby pressurized gas, the pressure of Shi Zuo sub-chamber increases, thus can absorption pressure pulsation energy, guarantee that the pressure of the another port (outlet) of pipe 1 locating is constant as far as possible.
Flexible Connector 3 can be selected the elastic elements such as spring, and its elasticity coefficient can be selected suitably according to the gas situation of the occasion that uses baffler.
Flexible Connector 3 can be single spring, as shown in Figure 2.
In addition, can expect, Flexible Connector 3 can be the assembly parts of baffle plate and for example spring of elastic element.For example, Flexible Connector 3 can comprise a baffle plate and be individually fixed in two elastic elements of these baffle plate both sides, the end that is not fixed to this baffle plate of these two elastic elements forms the two ends of Flexible Connector 3, this baffle plate can be similar to above-mentioned left and right baffle plate 2 in mode that can axial motion with respect to pipe 1 in the chamber that is axially arranged on this pipe transverse to this pipe, and on this baffle plate, has the air-flow that allows air-flow to be upward through it at this axle and pass through portion.This air-flow can be through hole or the recess that is positioned at baffle plate periphery by portion.In this case, the working principle of baffler is similar to mentioned above, just manages 1 chamber and is separated into more sub-chamber, and single-unit baffler becomes more more piece baffler, and therefore erasure effect is better.
Preferably, the air-flow in above-mentioned each baffle plate on different baffle plates is the axial misalignment along pipe 1 by portion, staggers, and is conducive to like this eliminate the noise better.
Although in the baffler of Fig. 2, Flexible Connector 3 two ends are respectively fixed to a baffle plate 2, and for the present invention, this is optional.For example, only one end of spring fastenings 3---for example left end---is fixed to a baffle plate 2, its other end---for example right-hand member---can be directly fixed to pipe 1, for example, be attached to the attachment location of pipe on 1 inwall; Now, the right baffle plate 2 in Fig. 2 can omit.
In one embodiment, pipe 1 forms the shell of baffler, can be made up of the high-strength material such as copper, steel.
In one embodiment, pipe 1 is provided with the limited part of the axial motion stroke for limiting each baffle plate, and described limited part for example can be the projection on inner tube wall.
Above-mentioned each baffle plate can be made up of the larger material of rigidity or high damping material, and its material can be selected according to the gas situation of the occasion that uses baffler.
It will be understood by those skilled in the art that and be similar in existing expansion trumpet type silencer, in the pipe of baffler of the present invention, can there is sudden change place, for example abrupt interface, and/or some arrange (not shown), for example pipe, chamber setting.
For expansion trumpet type silencer of the present invention, because stream pressure pulsation can be subdued, be absorbed in the elastic equilibrium mechanism of baffle plate and Flexible Connector formation, can eliminate better the noise being produced by pressure pulsation; Meanwhile, because single-unit baffler is become two joints, three joint or multi-section serial bafflers more by baffle plate, erasure effect is more excellent.
Expansion trumpet type silencer of the present invention is than existing expansion trumpet type silencer, and soundproof effect is better, and the noise of eliminating pressure pulsation generation is had to good effect.
Claims (10)
1. expand trumpet type silencer, comprise a pipe, described pipe limits a chamber that air feed stream passes through, it is characterized in that, first baffle plate is being axially arranged in described chamber transverse to described pipe in the mode with respect to the axial motion of described pipe energy, a Flexible Connector one end is fixed to described the first baffle plate, the other end is fixed on described pipe or an interior attachment location, make the described Flexible Connector can be along described axial stretching, on wherein said the first baffle plate, there is the air-flow that allows air-flow to be upward through it at described axle and pass through portion.
2. expansion trumpet type silencer according to claim 1, one of them second baffle is being axially arranged in described chamber transverse to described pipe in the mode with respect to the axial motion of described pipe energy, and axially open with described the first baffle interval along described, wherein said attachment location is positioned on described second baffle, has the air-flow that allows air-flow to be upward through it at described axle and pass through portion on described second baffle.
3. expansion trumpet type silencer according to claim 1 and 2, wherein said Flexible Connector is a spring.
4. expansion trumpet type silencer according to claim 2, wherein said Flexible Connector comprises the 3rd baffle plate and is individually fixed in two elastic elements of the 3rd baffle plate both sides, the end that is not fixed to described the 3rd baffle plate of described two elastic elements is respectively described one end and the described the other end of described Flexible Connector, wherein said the 3rd baffle plate, has the air-flow that allows air-flow to be upward through it at described axle and passes through portion transverse to being axially arranged in described chamber of described pipe in the mode with respect to the axial motion of described pipe energy on described the 3rd baffle plate.
5. expansion trumpet type silencer according to claim 4, wherein said two elastic elements are two springs.
6. according to the expansion trumpet type silencer described in claim 2 or 4, the air-flow on the different baffle plates in wherein said baffle plate by portion along described axial misalignment.
7. according to the expansion trumpet type silencer described in claim 1,2 or 4, wherein the air-flow on each baffle plate is through hole and/or the recess that is positioned at its periphery by portion.
8. expansion trumpet type silencer according to claim 1 and 2, is provided with the limited part of the axial motion stroke for limiting described baffle plate in wherein said pipe.
9. expansion trumpet type silencer according to claim 8, wherein said limited part is the projection on the inwall of described pipe.
10. expansion trumpet type silencer according to claim 1 and 2, wherein said pipe forms the shell of described baffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163831.0A CN103912753B (en) | 2014-04-22 | 2014-04-22 | Pipe-expanding-type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163831.0A CN103912753B (en) | 2014-04-22 | 2014-04-22 | Pipe-expanding-type silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103912753A true CN103912753A (en) | 2014-07-09 |
| CN103912753B CN103912753B (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163831.0A Active CN103912753B (en) | 2014-04-22 | 2014-04-22 | Pipe-expanding-type silencer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626589A (en) * | 2016-03-23 | 2016-06-01 | 苏州弗士曼精密机械有限公司 | Multilayer composite silencer |
| CN108087994A (en) * | 2018-02-27 | 2018-05-29 | 宁波奥克斯电气股份有限公司 | A kind of damping device and air conditioner |
| CN108332406A (en) * | 2018-04-08 | 2018-07-27 | 珠海格力电器股份有限公司 | Silencing means and apply its transducer air conditioning |
| CN109026602A (en) * | 2018-07-18 | 2018-12-18 | 珠海格力电器股份有限公司 | Alleviate exhaust gas pressure pulse device and the air conditioner using it |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE642603C (en) * | 1935-05-07 | 1937-03-10 | Alfred Reinsch Dr Ing | Silencer, especially for two-stroke internal combustion engines |
| US4903486A (en) * | 1987-12-01 | 1990-02-27 | Larry K. Goodman | Performance responsive muffler for internal combustion engines |
| JPH06101794A (en) * | 1992-09-21 | 1994-04-12 | Fuji Electric Co Ltd | Fluid pressure pulsation absorbing device |
| JPH08261098A (en) * | 1995-03-24 | 1996-10-08 | Toyoda Gosei Co Ltd | Fuel pressure pulsation damper |
| CN2251709Y (en) * | 1995-05-25 | 1997-04-09 | 罗东虎 | Muffler for air gun |
| KR20020032683A (en) * | 2000-10-26 | 2002-05-04 | 이계안 | Variable offset exhaust muffler for vehicles |
| CN102168780A (en) * | 2011-05-03 | 2011-08-31 | 华北电力大学（保定） | Buffer device for diminishing pressure pipeline fluid pressure pulsation |
| CN202452026U (en) * | 2012-02-21 | 2012-09-26 | 郑州郑燃调压控制技术有限公司 | Gas pipeline silencer |
| CN203892791U (en) * | 2014-04-22 | 2014-10-22 | 合肥美的电冰箱有限公司 | Tube expanding type muffler |
-
2014
- 2014-04-22 CN CN201410163831.0A patent/CN103912753B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE642603C (en) * | 1935-05-07 | 1937-03-10 | Alfred Reinsch Dr Ing | Silencer, especially for two-stroke internal combustion engines |
| US4903486A (en) * | 1987-12-01 | 1990-02-27 | Larry K. Goodman | Performance responsive muffler for internal combustion engines |
| JPH06101794A (en) * | 1992-09-21 | 1994-04-12 | Fuji Electric Co Ltd | Fluid pressure pulsation absorbing device |
| JPH08261098A (en) * | 1995-03-24 | 1996-10-08 | Toyoda Gosei Co Ltd | Fuel pressure pulsation damper |
| CN2251709Y (en) * | 1995-05-25 | 1997-04-09 | 罗东虎 | Muffler for air gun |
| KR20020032683A (en) * | 2000-10-26 | 2002-05-04 | 이계안 | Variable offset exhaust muffler for vehicles |
| CN102168780A (en) * | 2011-05-03 | 2011-08-31 | 华北电力大学（保定） | Buffer device for diminishing pressure pipeline fluid pressure pulsation |
| CN202452026U (en) * | 2012-02-21 | 2012-09-26 | 郑州郑燃调压控制技术有限公司 | Gas pipeline silencer |
| CN203892791U (en) * | 2014-04-22 | 2014-10-22 | 合肥美的电冰箱有限公司 | Tube expanding type muffler |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626589A (en) * | 2016-03-23 | 2016-06-01 | 苏州弗士曼精密机械有限公司 | Multilayer composite silencer |
| CN108087994A (en) * | 2018-02-27 | 2018-05-29 | 宁波奥克斯电气股份有限公司 | A kind of damping device and air conditioner |
| CN108332406A (en) * | 2018-04-08 | 2018-07-27 | 珠海格力电器股份有限公司 | Silencing means and apply its transducer air conditioning |
| CN109026602A (en) * | 2018-07-18 | 2018-12-18 | 珠海格力电器股份有限公司 | Alleviate exhaust gas pressure pulse device and the air conditioner using it |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103912753B (en) | 2017-02-22 |
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