CN106014574A - Silencer - Google Patents
Silencer Download PDFInfo
- Publication number
- CN106014574A CN106014574A CN201610533455.9A CN201610533455A CN106014574A CN 106014574 A CN106014574 A CN 106014574A CN 201610533455 A CN201610533455 A CN 201610533455A CN 106014574 A CN106014574 A CN 106014574A
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- CN
- China
- Prior art keywords
- cavity
- air inlet
- acoustic
- elastic
- pipe
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/06—Silencing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2210/00—Combination of methods of silencing
Abstract
The invention provides a silencer. The silencer comprises a main body, a gradual expanding part, a gradual shrinking part and a diffuse reflecting part, wherein the main body is provided with an air inlet, an air outlet and a cavity communicating with the air inlet and the air outlet; the gradual expanding part is arranged in the cavity and is positioned at the air outlet; the gradual shrinking part is arranged in the cavity and is positioned at the air outlet; and the diffuse reflecting part is arranged in the cavity and is positioned between the gradual expanding part and the gradual shrinking part. The silencer, provided by the invention, can solve the problem of narrow adaptation frequency range in the prior art.
Description
Technical field
The present invention relates to acoustic filter technical field, in particular to a kind of acoustic filter.
Background technology
At present, exhaust silencer is widely used in the industry such as automobile, air-conditioning.Such as automobile engine, on-board air conditioner electromotor, sky
Adjust helical-lobe compressor etc..It is narrow that existing exhaust silencer adapts to frequency range, only effective at middle and high frequency band, it is difficult to meet frequency conversion
The electromotor of helical-lobe compressor or load change needs.
Summary of the invention
The present invention provides a kind of acoustic filter, the problem narrow to solve adaptation frequency range of the prior art.
A kind of acoustic filter provided according to the present invention, acoustic filter include body, body have air inlet and gas outlet and connect into
QI KOU and the cavity of gas outlet；Flaring portion, is arranged in cavity and is positioned at air inlet；Tapered portion, in being arranged on cavity and position
At gas outlet；Diffuse-reflectance portion, is arranged in cavity, and diffuse-reflectance portion is positioned between flaring portion and tapered portion.
Further, diffuse-reflectance portion includes elastic spoiler, is arranged in cavity.
Further, elastic spoiler includes multiple elastic, and the coefficient of elasticity of at least two elastic is different.
Further, elastic spoiler is provided with multiple groove, between two grooves, forms an elastic.
Further, the length of at least two groove is different.
Further, multiple elastic are symmetricly set on elastic spoiler.
Further, diffuse-reflectance portion also includes dividing plate, is arranged between flaring portion and elastic spoiler, dividing plate is provided with first
Through hole.
Further, dividing plate is additionally provided with protuberance, dividing plate is provided with the one of protuberance and arranges facing to elastic spoiler.
Further, on dividing plate, the another side of opposite lug is provided with recess.
Further, acoustic filter also includes restriction, is arranged in cavity, and throttle point is between flaring portion and tapered portion.
Further, restriction includes throttle pipe, and the tube wall of throttle pipe is provided with first segment discharge orifice.
Further, restriction also includes end plate, is arranged on the end of throttle pipe, and end plate is provided with second section discharge orifice.
Further, elastic spoiler being provided with the first perforation, elastic spoiler is set on throttle pipe by the first perforation.
Further, dividing plate being provided with the second perforation, throttle pipe has the first end and the second end being oppositely arranged, throttle pipe
Being provided with end plate on first end, the second end of throttle pipe is fixedly installed at the second perforation of dividing plate.
Further, restriction also includes orifice plate, and orifice plate is arranged in cavity, and orifice plate is provided with the second through hole.
Further, orifice plate is between throttle pipe and gas outlet.
Further, flaring portion is air inlet pipe, and air inlet pipe includes the first end and the second end being oppositely arranged, the first end of air inlet pipe
Penetrating at air inlet and within the cavity, air inlet pipe includes extension diameter section, and extension diameter section is within the cavity, and extension diameter section is provided with
Three through holes.
Further, air inlet pipe also includes that the first cylindrical section, the first cylindrical section are partially disposed in cavity, on the first cylindrical section
It is provided with fourth hole on pipeline section within the cavity.
Further, tapered portion is escape pipe, and escape pipe includes the first end and the second end being oppositely arranged, the first end of escape pipe
Pass cavity from gas outlet, escape pipe includes undergauge section, and undergauge section is within the cavity, and undergauge section is provided with fifth hole.
Further, escape pipe also includes that the second cylindrical section, the second cylindrical section are partially disposed in cavity, on the second cylindrical section
It is provided with clematis stem hole on pipeline section within the cavity.
Further, body includes body；First shrouding and the second shrouding, be separately positioned on the two ends of body, and air inlet is arranged
On the sidewall of body and near the first shrouding, gas outlet is arranged on the second shrouding.
Application technical scheme, arranges flaring portion, tapered portion and diffuse-reflectance portion in muffler body, by unrestrained anti-
Portion of penetrating strengthens the diffuse-reflecting power of acoustic filter, so can strengthen the attenuation to low frequency pulsation, and then can extend and disappear
The adaptation frequency range of sound device, enables acoustic filter to meet the aerofluxus needs under basic, normal, high frequency operating mode simultaneously.
Accompanying drawing explanation
The Figure of description of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the acoustic filter provided according to embodiments of the present invention；
Fig. 2 shows the front view of acoustic filter in Fig. 1；
Fig. 3 shows the structural representation of Fig. 1 Elastic spoiler；
Fig. 4 shows the structural representation of Fig. 1 median septum；
Fig. 5 shows the structural representation of throttle pipe in Fig. 1；
Fig. 6 shows the structural representation of Fig. 1 aperture plate；
Fig. 7 shows the structural representation in flaring portion in Fig. 1；
Fig. 8 shows the structural representation in tapered portion in Fig. 1；
Fig. 9 shows the structural representation of body in Fig. 1.
Wherein, above-mentioned accompanying drawing includes the following drawings labelling:
10, body；11, air inlet；12, gas outlet；13, cavity；20, flaring portion；21, extension diameter section；22, the first circle
Shell of column；30, tapered portion；31, undergauge section；32, the second cylindrical section；40, diffuse-reflectance portion；41, elastic spoiler；41a、
Elastic；41b, groove；42, dividing plate；42a, the first through hole；42b, protuberance；43a, the first perforation；43b, second wear
Hole；50, restriction；51, throttle pipe；51a, first segment discharge orifice；52, end plate；52a, second section discharge orifice；53, orifice plate；
53a, the second through hole.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Below at least
The description only actually of one exemplary embodiment is illustrative, never any as to the present invention and application thereof or use
Limit.Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly falls into the scope of protection of the invention.
It should be noted that term used herein above merely to describe detailed description of the invention, and be not intended to restricted root according to this Shen
Illustrative embodiments please.As used herein, unless the context clearly indicates otherwise, otherwise singulative is also intended to
Including plural form, additionally, it should be understood that, when using term " to comprise " in this manual and/or time " including ",
It indicates existing characteristics, step, operation, device, assembly and/or combinations thereof.
Unless specifically stated otherwise, the parts illustrated the most in these embodiments and positioned opposite, the numerical expression of step and
Numerical value does not limits the scope of the invention.Simultaneously, it should be appreciated that for the ease of describing, the chi of the various piece shown in accompanying drawing
Very little is not to draw according to actual proportionate relationship.For technology, method and apparatus known to person of ordinary skill in the relevant
May be not discussed in detail, but in the appropriate case, described technology, method and apparatus should be considered to authorize one of description
Point.Shown here with in all examples discussed, any occurrence should be construed as merely exemplary rather than conduct
Limit.Therefore, other example of exemplary embodiment can have different values.It should also be noted that similar label and letter exist
Figure below represents similar terms, therefore, the most a certain Xiang Yi accompanying drawing is defined, is then not required in accompanying drawing subsequently
It is further discussed.
In describing the invention, it is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, perpendicular
To, vertical, level " and " top, the end " etc. indicated by orientation or position relationship be normally based on orientation shown in the drawings or position
Putting relation, be for only for ease of the description present invention and simplify description, in the case of illustrating on the contrary, these nouns of locality are not
Instruction and the device of hint indication or element must have specific orientation or with specific azimuth configuration and operation, therefore can not
It is interpreted as limiting the scope of the invention；The noun of locality " inside and outside " refers to inside and outside the profile relative to each parts itself.
For the ease of describing, space relative terms here can be used, as " ... on ", " ... top ", " ...
Upper surface ", " above " etc., be used for describing such as a device shown in the figure or feature and other devices or the space of feature
Position relationship.It should be appreciated that space relative terms is intended to comprise making in addition to the orientation that device is described in the drawings
With or operation in different azimuth.Such as, if the device in accompanying drawing is squeezed, then it is described as " at other devices or textural
Side " or " other devices or structure on " device after will be positioned as " other devices or construct below " or "
Under other devices or structure ".Thus, exemplary term " ... top " can include " ... top " and " ...
Lower section " two kinds of orientation.This device can also other different modes location (90-degree rotation or be in other orientation), and to here
The space used relatively describes and makes respective explanations.
Furthermore, it is necessary to explanation, the word such as " first ", " second " is used to limit parts, it is only for it is right to be easy to
Corresponding parts are distinguished, and as not having Stated otherwise, above-mentioned word does not has particular meaning, therefore it is not intended that to this
The restriction of bright protection domain.
As depicted in figs. 1 and 2, the embodiment of the present invention is a kind of acoustic filter, and this acoustic filter includes: body 10, flaring portion 20,
Tapered portion 30 and diffuse-reflectance portion 40.Wherein, body 10 has air inlet 11 and gas outlet 12 and connects air inlet 11 He
The cavity 13 of gas outlet 12.In flaring portion 20 is arranged on cavity 13 and be positioned at air inlet 11.Tapered portion 30 is arranged on cavity
In 13 and be positioned at gas outlet 12.Diffuse-reflectance portion 40 is arranged in cavity 13, and diffuse-reflectance portion 40 is positioned at flaring portion 20 and gradually
Between contracting portion 30.
Specifically, gas by air inlet 11 enter cavity 13 time, first pass through flaring portion 20, gas when by flaring portion 20,
Gas can expand, and reduces gas flow rates and pressure, and then makes gas smooth flow.Then gas enters diffuse-reflectance
Portion 40, is interfered by diffuse-reflectance portion 40 gas flowing, reflect, collides resonance effect, and it is right so can to strengthen
The attenuation of gas, especially for low frequency gas.Last gas enters tapered portion 30, make gas collaborate by tapered portion 30,
Extruding is also discharged at gas outlet 12.Gas is after expanding in acoustic filter, collide, reflect, extrude, collaborating, it is possible to pole
The pulsation energy of big damping gas pressure, reduces pulse amplitude, and then can reach the purpose eliminated the noise.
The embodiment that the application present invention provides, arranges flaring portion 20, tapered portion 30 and diffuse-reflectance portion in muffler body 10
40, strengthened the diffuse-reflecting power of acoustic filter by diffuse-reflectance portion 40, so can strengthen the attenuation to low frequency pulsation,
And then the adaptation frequency range of acoustic filter can be extended, enable acoustic filter to meet the aerofluxus need under basic, normal, high frequency operating mode simultaneously
Want.Can be widely used in frequency-changeable compressor.
Specifically, as it is shown on figure 3, this diffuse-reflectance portion 40 includes that elastic spoiler 41, elastic spoiler 41 are arranged on cavity 13
In.Gas flowing can be interfered by elastic spoiler 41.Wherein, it is also not limited to elastic spoiler 41, it is possible to will
It is set to netted elastic wire.
In the present embodiment, this elasticity spoiler 41 includes multiple elastic 41a, and the elasticity of at least two elastic 41a
Coefficient is different.So can adapt to the Gas Vibration of different frequency.
Specifically, this elasticity spoiler 41 is provided with multiple groove 41b, between two groove 41b, forms elastic 41a.
The coefficient of elasticity difference of elastic 41a can realize by being spaced difference between groove 41b two-by-two, or logical by changing
The length of groove 41b realizes.In the present embodiment, the length of at least two groove 41b is arranged difference.So it is easy to produce
And processing.
In the present embodiment, multiple elastic 41a are symmetricly set on elastic spoiler 41.
Specifically, elastic spoiler 41 can be oval, circular or polygon.It is oval, with body in the present embodiment
10 adapt.Elastic spoiler 41 is stamped to form by the sheet metal of 0.5mm, and it is divided into multiple elasticity by multiple groove 41b
Portion 41a, multiple elastic 41a and multiple groove 41b become axial symmetry distribution.Groove 41b plays centrifugation, plays earial drainage simultaneously
The effect of groove, the first middle perforation 43a is used for being set with throttle pipe 51.Multiple elastic 41a have certain elasticity, and elastic
Different, that respective occurrence frequency is relatively low under the percussion of air-flow beat vibration, promotes interference in air flow, resonance, and strengthening is to low
The response of intermediate frequency exhaust gas pulses, and then it is capable of Low Medium Frequency noise reduction.
As shown in Figure 4, diffuse-reflectance portion 40 also include dividing plate 42, dividing plate 42 be arranged on flaring portion 20 and elastic spoiler 41 it
Between, and on dividing plate 42, it is provided with the first through hole 42a.First through hole 42a can play shunting, the effect of throttling, simultaneously can
The interference effect of strengthening flow.
In the present embodiment, this dividing plate 42 is additionally provided with protuberance 42b, dividing plate 42 is provided with the one of protuberance 42b facing to bullet
Property spoiler 41 is arranged.So can increase the contact area of dividing plate 42 and air-flow, strengthen diffuse-reflecting power, and then can carry
High noise reduction capability.
Further, dividing plate 42 is additionally provided with recess on the another side of opposite lug 42b.By on the another side of dividing plate 42
Recess is set, so can increase the volume in flaring portion 20, beneficially gas expansion.
As described in Figure 5, this acoustic filter also includes that restriction 50, restriction 50 are arranged in cavity 13, and restriction 50 is positioned at gradually
Between expansion portion 20 and tapered portion 30.By arranging restriction 50 in acoustic filter, by increasing capacitance it is possible to increase gas throttling number of times, contribute to
Gas noise reduction.
Specifically, this restriction 50 includes throttle pipe 51, and the tube wall of throttle pipe 51 is provided with first segment discharge orifice 51a.
Gas is after expanding through flaring portion 20, and gas flows in throttle pipe 51, can squeeze when entering throttle pipe 51 port part
Pressure, throttling, while entering throttle pipe, shunt along journey through first segment discharge orifice 51a, and gas can be by throttling, break-in again, with not
Disconnected damping gas energy.
Specifically, in order to improve throttling, the effect of shunting, this restriction 50 also includes that end plate 52, end plate 52 are arranged on throttling
The end of pipe 51, end plate 52 is provided with second section discharge orifice 52a.Wherein, end plate 52 can be fixed on throttling by welding manner
On pipe 51.
Wherein, diffuse-reflectance portion 40 and restriction 50 can be sequentially arranged in body 10, it is possible to restriction 50 be arranged on unrestrained anti-
Penetrate before portion 40, it is possible to multiple diffuse-reflectance portion 40 is set in body 10 or multiple restriction 50, arrangement and quantity can
Structure according to body 10 determines.In the present embodiment, take volume to shorten, by diffuse-reflectance portion 40 and restriction 50
Overlap.
Specifically, elastic spoiler 41 arranges the first perforation 43a, and elasticity spoiler 41 is overlapped by the first perforation 43a
It is located on throttle pipe 51.
Being provided with the second perforation 43b on dividing plate 42, throttle pipe 51 has the first end and the second end, throttle pipe being oppositely arranged
Being provided with end plate 52 on first end of 51, the second end of throttle pipe 51 is fixedly installed at the second perforation 43b of dividing plate 42.
By above-mentioned diffuse-reflectance portion 40 and restriction 50 set-up mode so that gas when by dividing plate 42, a part of gas meeting
Passing from the first through hole 42a, major part gas can pass and flow into from the second perforation 43b in throttle pipe 51.By the first through hole
The gas of 42a reflects the gas generation normal impact of meeting with the tube wall from throttle pipe 51 tube wall effluent air and body 10, as
This vibrational energy that can be greatly attenuated air pulsing and amplitude, it is achieved noise reduction.
Wherein, the axis of the elastic axis of spoiler 41, the axis of dividing plate 42 and throttle pipe 51 can misaligned be arranged, also
Can be overlapped setting, in the present embodiment, and the elastic axis of spoiler 41, the axis of dividing plate 42 and the axis weight of throttle pipe 51
Close, make gas uniformly through.
As shown in Figure 6, this restriction 50 also includes that orifice plate 53, orifice plate 53 are arranged in cavity 13, and orifice plate 53 is provided with
Multiple second through hole 53a.Wherein, orifice plate 53 can be arranged between throttle pipe 51 and dividing plate 42, it is possible to is arranged on throttle pipe
Between 51 and gas outlet 12.In the present embodiment, orifice plate 53 is arranged between throttle pipe 51 and gas outlet 12.
Orifice plate 53 can be ellipse, circle, polygon etc. in the present embodiment, orifice plate 53 is set to oval with this
Body 10 structure is suitable.Orifice plate 53 is formed by thin plate stamping-out.Many second through hole 53a, multiple second through hole 53a etc. are had on it
It is intervally arranged.Specifically, adjacent 3 the second through hole 53a may make up an equilateral triangle.
Orifice plate 53 acts primarily as throttling, shunting action.It can reduce exhaust resistance under guaranteeing noise reduction premise.Orifice plate 53, every
The chamber that plate 42, throttle pipe 51 surround together with body 10, it is possible under the effect of air-flow, forms chamber and shakes, and then can promote
Enter diffuse-reflectance, strengthening decay exhaust gas pulses energy, improve noise reduction.
As it is shown in fig. 7, in the present embodiment, this flaring portion 20 is air inlet pipe, and air inlet pipe includes the first end and being oppositely arranged
Two ends, the first end of air inlet pipe penetrates at air inlet 11 and is positioned at cavity 13, and air inlet pipe includes extension diameter section 21, extension diameter section
21 are positioned at cavity 13, and extension diameter section 21 is provided with third through-hole.
By this air inlet pipe, it is possible to make gas expand after entering cavity 13, and reduce flow velocity and the pressure of gas, it is to avoid
There is Spline smoothing, be conducive to reducing the pressure loss.
Specifically, in the present embodiment, this extension diameter section 21 is toroidal, is so conducive to gas to expand rapidly diffusion, air-flow
The inwall of radial collision body 10, can form diffuse-reflectance, interfere with strengthening flow.
In the present embodiment, this air inlet pipe also includes that the first cylindrical section 22, the first cylindrical section 22 are partially disposed in cavity 13,
It is positioned on the pipeline section of cavity 13 on first cylindrical section 22 and is provided with fourth hole.It is arranged on the four-way on the first cylindrical section 22
The effect making gas distribution, break-in can be played in hole, by make to be reflected back from fourth hole effluent air and body 10 inwall
Gas collides, it is possible to play the effect of noise reduction.Further, in the present embodiment, extension diameter section 21 and the first cylindrical section 22 are
Integrative-structure.
As shown in Figure 8, tapered portion 30 is escape pipe, and escape pipe includes the first end and the second end being oppositely arranged, the of escape pipe
One end passes cavity 13 from gas outlet 12, and escape pipe includes that undergauge section 31, undergauge section 31 are positioned at cavity 13, undergauge section 31
On be provided with fifth hole.
By this escape pipe, it is possible to make gas when discharging through tapered portion 30, carry out extruding, collaborating, make gas smooth flow,
Avoid Spline smoothing, be conducive to reducing the pressure loss.
Specifically, in the present embodiment, this undergauge section 31 is the rapid contraction of toroidal, beneficially gas.
In the present embodiment, this escape pipe also includes that the second cylindrical section 32, the second cylindrical section 32 are partially disposed in cavity 13,
It is positioned on the pipeline section of cavity 13 on second cylindrical section 32 and is provided with clematis stem hole.It is arranged on the clematis stem on the second cylindrical section 32
Hole can make the gas in undergauge section 31 fully merge with the gas entering clematis stem hole, improves noise reduction further.
Air inlet 11 and gas outlet 12 can lay respectively at the two ends of body, and its center of circle can overlap setting.At the present embodiment
In, as it is shown in figure 9, this body 10 includes that body, the first shrouding and the second shrouding, the first shrouding and the second shrouding are respectively provided with
At the two ends of body, air inlet 11 is arranged on the sidewall of body and near the first shrouding, gas outlet 12 is arranged on the second shrouding.
Wherein, air inlet 11 is arranged near the first shrouding, it is meant that the distance of air inlet to the first shrouding is less than air inlet to body central
The distance of line.By the structure in the present embodiment, it is possible to make gas and the first shrouding and the second shrouding all collide, Jin Erneng
Enough reduction air pulsing energy and amplitude further.
The acoustic filter that the present embodiment provides, has the effect that
1, extend the range of application of acoustic filter, meet the exhausting and denoising needs under basic, normal, high frequency operating mode simultaneously, particularly become
Frequently compressor noise-reduction needs.
2, under identical operating mode, noise reductions 1～3dB more than existing acoustic filter.
3, reduce exhaust resistance, reduce electromotor, compressor efficiency loss, it is achieved energy-conservation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (21)
1. an acoustic filter, it is characterised in that described acoustic filter includes:
Body (10), described body (10) has air inlet (11) and gas outlet (12) and connects described air inlet
And the cavity (13) of described gas outlet (12) (11)；
Flaring portion (20), is arranged in described cavity (13) and is positioned at described air inlet (11) place；
Tapered portion (30), is arranged in described cavity (13) and is positioned at described gas outlet (12) place；
Diffuse-reflectance portion (40), is arranged in described cavity (13), and described diffuse-reflectance portion (40) is positioned at described flaring portion (20)
And between described tapered portion (30).
Acoustic filter the most according to claim 1, it is characterised in that described diffuse-reflectance portion (40) including:
Elastic spoiler (41), is arranged in described cavity (13).
Acoustic filter the most according to claim 2, it is characterised in that described elastic spoiler (41) includes multiple elastic (41a),
The coefficient of elasticity of elastic described at least two (41a) is different.
Acoustic filter the most according to claim 3, it is characterised in that be provided with multiple groove on described elastic spoiler (41)
(41b), a described elastic (41a) is formed between two described grooves (41b).
Acoustic filter the most according to claim 4, it is characterised in that the length of groove described at least two (41b) is different.
Acoustic filter the most according to claim 3, it is characterised in that multiple described elastic (41a) are symmetricly set on described bullet
In property spoiler (41).
Acoustic filter the most according to claim 2, it is characterised in that described diffuse-reflectance portion (40) also includes:
Dividing plate (42), is arranged between described flaring portion (20) and described elastic spoiler (41), described dividing plate (42)
On be provided with the first through hole (42a).
Acoustic filter the most according to claim 7, it is characterised in that be additionally provided with protuberance (42b) on described dividing plate (42),
It is provided with the one of protuberance (42b) on described dividing plate (42) to arrange facing to described elastic spoiler (41).
Acoustic filter the most according to claim 8, it is characterised in that the most described protuberance (42b) on described dividing plate (42)
Another side is provided with recess.
Acoustic filter the most according to claim 7, it is characterised in that described acoustic filter also includes:
Restriction (50), is arranged in described cavity (13), and described restriction (50) is positioned at described flaring portion (20)
And between described tapered portion (30).
11. acoustic filters according to claim 10, it is characterised in that described restriction (50) including:
Throttle pipe (51), the tube wall of described throttle pipe (51) is provided with first segment discharge orifice (51a).
12. acoustic filters according to claim 11, it is characterised in that described restriction (50) also includes:
End plate (52), is arranged on the end of described throttle pipe (51), and described end plate is provided with second section discharge orifice on (52)
(52a)。
13. acoustic filters according to claim 12, it is characterised in that be provided with the first perforation on described elastic spoiler (41)
(43a), described elastic spoiler (41) is set on described throttle pipe (51) by described first perforation (43a).
14. acoustic filters according to claim 13, it is characterised in that be provided with the second perforation (43b) on described dividing plate (42),
Described throttle pipe (51) has the first end and the second end being oppositely arranged, and the first end of described throttle pipe (51) is arranged
Have described end plate (52), the second end of described throttle pipe (51) to be fixedly installed on described the second of described dividing plate (42) to wear
Hole (43b) place.
15. acoustic filters according to claim 11, it is characterised in that described restriction (50) also includes:
Orifice plate (53), in described orifice plate (53) is arranged on described cavity (13), described orifice plate (53) is provided with the
Two through holes (53a).
16. acoustic filters according to claim 15, it is characterised in that described orifice plate (53) be positioned at described throttle pipe (51) and
Between described gas outlet (12).
17. acoustic filters according to claim 1, it is characterised in that described flaring portion (20) is air inlet pipe, described air inlet pipe
Including the first end being oppositely arranged and the second end, the first end of described air inlet pipe penetrates from described air inlet (11) and is positioned at
In described cavity (13), described air inlet pipe includes that extension diameter section (21), described extension diameter section (21) are positioned at described cavity (13)
In, described extension diameter section is provided with third through-hole on (21).
18. acoustic filters according to claim 17, it is characterised in that described air inlet pipe also includes the first cylindrical section (22), institute
State the first cylindrical section (22) to be partially disposed in described cavity (13), described first cylindrical section (22) is positioned at institute
State and be provided with fourth hole on the pipeline section in cavity (13).
19. acoustic filters according to claim 1, it is characterised in that described tapered portion (30) is escape pipe, described escape pipe
Including the first end being oppositely arranged and the second end, the first end of described escape pipe passes described chamber from described gas outlet (12)
Body (13), described escape pipe includes that undergauge section (31), described undergauge section (31) are positioned at described cavity (13), institute
State and be provided with fifth hole in undergauge section (31).
20. acoustic filters according to claim 19, it is characterised in that described escape pipe also includes the second cylindrical section (32), institute
State the second cylindrical section (32) to be partially disposed in described cavity (13), described second cylindrical section (32) is positioned at institute
State and be provided with clematis stem hole on the pipeline section in cavity (13).
21. acoustic filters according to claim 1, it is characterised in that described body (10) including:
Body；
First shrouding and the second shrouding, be separately positioned on the two ends of described body, and described air inlet (11) is arranged on described
On the sidewall of body and near described first shrouding, described gas outlet (12) are arranged on described second shrouding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610533455.9A CN106014574B (en) | 2016-07-06 | 2016-07-06 | Silencer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107842506A (en) * | 2017-11-01 | 2018-03-27 | 成都吱吖科技有限公司 | A kind of silencing means for screw compressor exit |
| CN108981033A (en) * | 2018-08-21 | 2018-12-11 | 四川健尔莱医疗器械科技有限公司 | A kind of low-noise air clarifier |
| CN111810380A (en) * | 2020-06-09 | 2020-10-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Silencing device, compressor assembly comprising same and refrigerator |
| CN114893640A (en) * | 2022-05-30 | 2022-08-12 | 江苏大学 | Noise-reducing, pressure-reducing and temperature-reducing device and valve with same |
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| GB460148A (en) * | 1934-07-19 | 1937-01-18 | Zygmunt Wilman | Improvements relating to exhaust gas mufflers |
| CN101289952A (en) * | 2008-06-03 | 2008-10-22 | 重庆大学 | Expanding cavity adjustable exhaust silencer |
| CN201666174U (en) * | 2010-03-24 | 2010-12-08 | 杭州吉大空分设备有限公司 | Low PSA decibel muffler |
| CN202431333U (en) * | 2011-08-08 | 2012-09-12 | 重庆端方机电有限公司 | Silencer of 15kW gasoline engine generator |
| CN103306780A (en) * | 2013-05-30 | 2013-09-18 | 安徽江淮汽车股份有限公司 | Automobile muffler |
| CN205858455U (en) * | 2016-07-06 | 2017-01-04 | 珠海格力电器股份有限公司 | Acoustic filter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB460148A (en) * | 1934-07-19 | 1937-01-18 | Zygmunt Wilman | Improvements relating to exhaust gas mufflers |
| CN101289952A (en) * | 2008-06-03 | 2008-10-22 | 重庆大学 | Expanding cavity adjustable exhaust silencer |
| CN201666174U (en) * | 2010-03-24 | 2010-12-08 | 杭州吉大空分设备有限公司 | Low PSA decibel muffler |
| CN202431333U (en) * | 2011-08-08 | 2012-09-12 | 重庆端方机电有限公司 | Silencer of 15kW gasoline engine generator |
| CN103306780A (en) * | 2013-05-30 | 2013-09-18 | 安徽江淮汽车股份有限公司 | Automobile muffler |
| CN205858455U (en) * | 2016-07-06 | 2017-01-04 | 珠海格力电器股份有限公司 | Acoustic filter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842506A (en) * | 2017-11-01 | 2018-03-27 | 成都吱吖科技有限公司 | A kind of silencing means for screw compressor exit |
| CN108981033A (en) * | 2018-08-21 | 2018-12-11 | 四川健尔莱医疗器械科技有限公司 | A kind of low-noise air clarifier |
| CN111810380A (en) * | 2020-06-09 | 2020-10-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Silencing device, compressor assembly comprising same and refrigerator |
| CN114893640A (en) * | 2022-05-30 | 2022-08-12 | 江苏大学 | Noise-reducing, pressure-reducing and temperature-reducing device and valve with same |
| CN114893640B (en) * | 2022-05-30 | 2023-08-15 | 江苏大学 | Noise-reducing, pressure-reducing and temperature-reducing device and valve provided with same |
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|---|---|
| CN106014574B (en) | 2019-01-04 |
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