CN112963330A - Air compressor machine silencer that admits air - Google Patents
Air compressor machine silencer that admits air Download PDFInfo
- Publication number
- CN112963330A CN112963330A CN202110208251.9A CN202110208251A CN112963330A CN 112963330 A CN112963330 A CN 112963330A CN 202110208251 A CN202110208251 A CN 202110208251A CN 112963330 A CN112963330 A CN 112963330A
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- CN
- China
- Prior art keywords
- silencer
- pipe orifice
- air
- air inlet
- air compressor
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- 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.)
- Pending
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- 230000003584 silencer Effects 0.000 title claims abstract description 32
- 230000001788 irregular Effects 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000030279 gene silencing Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Compressor (AREA)
Abstract
The invention provides an air compressor air inlet silencer, which comprises a silencer main body, wherein the silencer main body comprises an expansion cavity 1, an air inlet pipe orifice 2 and an air outlet pipe orifice 3, the air inlet pipe orifice 2 and the air outlet pipe orifice 3 are respectively arranged at two ends of the silencer main body, the expansion cavity 1 adopts a non-circular irregular structure, and the expansion ratio S2/S1 is more than or equal to 5; wherein the sectional area of the inner cavity is S2, and the sectional area of the inner diameter of the pipe orifice is S1; the length of the expansion chamber 1 is
Wherein n is 1,2,3,4,5, … …. The invention has the functions of high noise reduction amplitude, wide noise reduction frequency band, low production cost, small air inlet resistance and flexible arrangement, and can be widely applied to various air compressor air inlet systems for vehicles.
Description
Technical Field
The invention relates to an air compressor air inlet silencer, belongs to the technical field of air compressor air inlet noise reduction equipment, and particularly relates to an air compressor air inlet noise reduction system for a vehicle.
Background
The automobile air inlet noise is one of main noises when the automobile is at a low speed, and under the working condition of idle running, the narrow-band energy of the air inlet noise of the air compressor is high, so that the narrow-band energy is easily distinguished by human ears, the driving experience of personnel in the automobile is greatly influenced, and meanwhile, the noise trouble is also brought to the personnel outside the automobile. At present, the air inlet silencer of the domestic automobile air compressor cannot simultaneously consider the problems of wide frequency band silencing, low resistance and convenient arrangement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-resistance silencer capable of effectively reducing the noise of an automobile air inlet system aiming at the defects in the prior art.
In order to solve the technical problem, the invention provides an air compressor air inlet silencer which comprises a silencer main body, wherein the silencer main body comprises an expansion cavity, an air inlet pipe orifice and an air outlet pipe orifice, the air inlet pipe orifice and the air outlet pipe orifice are respectively arranged at two ends of the silencer main body, the expansion cavity adopts a non-circular irregular structure, and the expansion ratio S2/S1 is more than or equal to 5; wherein the sectional area of the inner cavity is S2, and the sectional area of the inner diameter of the pipe orifice is S1; the length of the expansion chamber 1 is
Wherein n is 1,2,3,4,5, … ….
The muffler adopts a double-inner-inserting-tube structure and comprises a first inner inserting tube and a second inner inserting tube, wherein the lengths of the first inner inserting tube and the second inner inserting tube are respectively set to be 0.5L and 0.25L.
The inner cavities of the air inlet pipe orifice and the air outlet pipe orifice adopt structures with cone angles, and the size of the cone angle meets the formula
The expansion cavity adopts an irregular structure similar to an ellipse.
The air compressor silencer is provided with a lug for installation.
Has the advantages that: the plastic material is low in processing cost and light in weight; the noise reduction amplitude is high, the broadband is used for noise reduction, the medium and high frequency band can be covered, and the transfer loss curve does not have an anti-resonance point; the irregular expansion cavity and the mounting lug are arranged conveniently; the air inlet resistance is small, and the reliability of the air compressor is ensured. The invention has the functions of high noise reduction amplitude, wide noise reduction frequency band, low production cost, small air inlet resistance and flexible arrangement, and can be widely applied to various air compressor air inlet systems for vehicles.
Drawings
FIG. 1 is a schematic structural diagram of the present invention:
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic cross-sectional view of a tapered bore of a nozzle according to the present invention;
FIG. 4 is a schematic cross-sectional view of the expansion chamber of the present invention;
in the figure: 1 expansion cavity, 2 air inlet pipe openings, 3 air outlet pipe openings, 4 lugs, 5 inner insertion pipes I and 6 inner insertion pipes II.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-4, the invention provides an air intake silencer of an air compressor, which comprises a silencer main body, wherein the silencer main body comprises an expansion cavity 1, an air intake pipe orifice 2 and an air exhaust pipe orifice 3, the air intake pipe orifice 2 and the air exhaust pipe orifice 3 are respectively arranged at two ends of the silencer main body, the expansion cavity 1 adopts a non-circular irregular structure, and the expansion ratio of S2/S1 is more than or equal to 5; wherein the sectional area of the inner cavity is S2, and the sectional area of the inner diameter of the pipe orifice is S1; the length of the expansion chamber 1 is
Wherein n is 1,2,3,4,5, … ….
The silencer adopts a double-inner-inserting-tube structure, and comprises an inner-inserting tube I5 and an inner-inserting tube II 6, wherein the double-inner-inserting-tube structure has the following transmission loss formula:
The air inlet pipe orifice2 and the inner cavity of the exhaust pipe opening 3 adopts a structure with a cone angle, and the size of the cone angle meets the formula
The expansion chamber 1 adopts an irregular structure similar to an ellipse.
The air compressor silencer is provided with a lug 4 for installation.
According to the invention, through the change of the cross section area, the acoustic impedance is changed along with the change of the cross section area, incident waves reach the expansion chamber, and a part of energy is reflected back to the air inlet pipe, so that acoustic energy is consumed, and no energy is lost in the silencer. And the maximum amount of sound deadening is expressed as:
TL is the transmission loss of the silencer, namely the silencing volume;
l is the length of the inner cavity of the expansion cavity 1;
m is an expansion ratio which is the ratio of the sectional area (S2) of the inner cavity of the expansion cavity 1 to the sectional area (S1) of the inner diameter of the pipe orifice;
lambda is the single frequency acoustic wave wavelength;
when in use
Then, maximum transmission loss is reached;
the formula for a single frequency acoustic wave wavelength is:
c is the speed of sound;
f is the target frequency of the noise reduction;
namely, the length of the inner cavity of the expansion cavity 1 is as follows:
the plastic material is low in processing cost and light in weight; the noise reduction amplitude is high, the broadband is used for noise reduction, the medium and high frequency band can be covered, and the transfer loss curve does not have an anti-resonance point; the irregular expansion cavity and the mounting lug are arranged conveniently; the air inlet resistance is small, and the reliability of the air compressor is ensured. The invention has the functions of high noise reduction amplitude, wide noise reduction frequency band, low production cost, small air inlet resistance and flexible arrangement, and can be widely applied to various air compressor air inlet systems for vehicles.
The above-described embodiments of the invention are intended to be illustrative only and are not intended to be limiting, as all changes that come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (5)
1. The utility model provides an air compressor machine silencer of admitting air which characterized in that: the silencer comprises a silencer main body, wherein the silencer main body comprises an expansion cavity (1), an air inlet pipe orifice (2) and an air outlet pipe orifice (3), the air inlet pipe orifice (2) and the air outlet pipe orifice (3) are respectively arranged at two ends of the silencer main body, the expansion cavity (1) adopts a non-circular irregular structure, and the expansion ratio S2/S1 is more than or equal to 5; wherein the sectional area of the inner cavity is S2, and the sectional area of the inner diameter of the pipe orifice is S1; the length of the expansion cavity (1) is
Wherein n is 1,2,3,4,5, … ….
2. The air compressor intake silencer of claim 1, wherein: the silencer adopts a double-inner-inserting-tube structure and comprises a first inner-inserting tube (5) and a second inner-inserting tube (6), wherein the lengths of the first inner-inserting tube (5) and the second inner-inserting tube (6) are respectively set to be 0.5L and 0.25L.
3. The air compressor intake silencer of claim 1, wherein: the inner cavities of the air inlet pipe orifice (2) and the air outlet pipe orifice (3) adopt structures with cone angles, and the size of the cone angle meets the formula
4. The air compressor intake silencer of claim 1, wherein: the expansion cavity (1) adopts an irregular structure similar to an ellipse.
5. The air compressor intake muffler according to any one of claims 1 to 4, wherein: the air compressor silencer is provided with a lug (4) for installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110208251.9A CN112963330A (en) | 2021-02-24 | 2021-02-24 | Air compressor machine silencer that admits air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110208251.9A CN112963330A (en) | 2021-02-24 | 2021-02-24 | Air compressor machine silencer that admits air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112963330A true CN112963330A (en) | 2021-06-15 |
Family
ID=76285984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110208251.9A Pending CN112963330A (en) | 2021-02-24 | 2021-02-24 | Air compressor machine silencer that admits air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112963330A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482756A (en) * | 2021-08-20 | 2021-10-08 | 泰豪电源技术有限公司 | Exhaust muffler modular design method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169645A (en) * | 2002-11-21 | 2004-06-17 | Toyoda Gosei Co Ltd | Silencer for cars |
| WO2015156585A1 (en) * | 2014-04-10 | 2015-10-15 | Halla Visteon Climate Control Corp. | Absorbing device and method for its production |
| CN105089980A (en) * | 2015-08-21 | 2015-11-25 | 合肥华凌股份有限公司 | Silencer and refrigerator |
| CN107514350A (en) * | 2017-08-21 | 2017-12-26 | 珠海格力电器股份有限公司 | Silencer and heat pump system |
-
2021
- 2021-02-24 CN CN202110208251.9A patent/CN112963330A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004169645A (en) * | 2002-11-21 | 2004-06-17 | Toyoda Gosei Co Ltd | Silencer for cars |
| WO2015156585A1 (en) * | 2014-04-10 | 2015-10-15 | Halla Visteon Climate Control Corp. | Absorbing device and method for its production |
| CN105089980A (en) * | 2015-08-21 | 2015-11-25 | 合肥华凌股份有限公司 | Silencer and refrigerator |
| CN107514350A (en) * | 2017-08-21 | 2017-12-26 | 珠海格力电器股份有限公司 | Silencer and heat pump system |
Non-Patent Citations (2)
| Title |
|---|
| 夏征盛: "结构参数对抗性消声器性能影响分析", 《机械设计与制造》 * |
| 江小亮 等: "椭圆截面扩张式消声器消声特性的有限元分析（续1）", 《汽车工程师》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482756A (en) * | 2021-08-20 | 2021-10-08 | 泰豪电源技术有限公司 | Exhaust muffler modular design method |
| CN113482756B (en) * | 2021-08-20 | 2022-11-04 | 泰豪电源技术有限公司 | Exhaust muffler modular design method |
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| PB01 | Publication | ||
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Application publication date: 20210615 |