CN202370617U - Self-regulation double-mode exhaust silencer - Google Patents
Self-regulation double-mode exhaust silencer Download PDFInfo
- Publication number
- CN202370617U CN202370617U CN 201120511649 CN201120511649U CN202370617U CN 202370617 U CN202370617 U CN 202370617U CN 201120511649 CN201120511649 CN 201120511649 CN 201120511649 U CN201120511649 U CN 201120511649U CN 202370617 U CN202370617 U CN 202370617U
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Abstract
The utility model discloses a self-regulation double-mode exhaust silencer, which comprises a casing, an inlet pipe, an outlet pipe, an inner inserting pipe, a spring and a valve, wherein a first expansion cavity and a second expansion cavity are formed in the casing, the inlet pipe penetrates through the first expansion cavity and extends into the second expansion cavity, a plurality of air holes are arranged on the pipe section of the inlet pipe positioned in the first expansion cavity, the outlet pipe penetrates through the second expansion cavity and extends into the first expansion cavity, the inner inserting pipe is positioned in the first expansion cavity, a plurality of gas outlet holes arranged on the inner inserting pipe are communicated with the first expansion cavity, a valve opening is formed between the inner inserting pipe and the second expansion cavity, the spring is positioned in the inner inserting pipe, one side of the spring is fixed, the other side of the spring is connected with a valve, and when the spring in the normal state, the valve is just sealed and covered on the valve opening. The double-mode exhaust silencer has the advantages that the exhaust resistance of the silencer can be automatically regulated according to the exhaust speed and the rotation speed of an engine, the power loss is reduced, and the power performance of the engine is ensured.
Description
Technical field
The utility model relates to a kind of silencing apparatus, refers to the double mode exhaust silencer of a kind of self-regulation especially.
Background technique
Silencing apparatus is to stop sound transmission and a kind of device of allowing air communication to cross, is the important measures of eliminating air power noise.Silencing apparatus generally is installed on the air-flow path of aerodynamic force equipment (like bigger equipment of relief opening noise such as blower, air compressor, boiler exhaust mouth, generator, water pumps) or in the inlet and exhaust system, in order to reduce noise.
The kind of silencing apparatus is a lot; Reactive muffler (as shown in Figure 1) is exactly wherein a kind of, and reactive muffler is to be combined by the pipe of abrupt interface and chamber, well as if an acoustic filter; Similar with electrical filter; The cell of each band pipe is a mesh of wave filter, and the air quality in the pipe is equivalent to inductance and the resistance on the electricity, is called acoustical mass and acoustic resistance.Volume of air in the cell is equivalent to the electric capacity on the electricity, is called acoustic compliance.Similar with electrical filter, the cell of each band pipe all has the natural frequency of oneself.When the sound wave that includes various frequency contents gets into first short tube; Only near the sound wave of some frequency first mesh natural frequency could pass through second short tube mouth of mesh arrival; The sound wave of other frequency then can not pass through mesh. can only in cell, come back reflective; Therefore, we claim that this sound wave is had the structure of filter function is acoustic filter.Choosing suitable pipe and chamber makes up. and just can filter the noise of some frequency content, thereby reach the purpose of noise elimination.Reactive muffler is applicable in the elimination, low-frequency noise.
For existing motor car engine silencing apparatus, the noise elimination effect is good more, and exhaust resistance is big more, thereby will increase the power consumption of motor.Because existing silencing apparatus does not generally have automatic regulatory function, also just can not regulate the exhaust resistance of silencing apparatus automatically, thereby influence the noise elimination effect of silencing apparatus according to the rotating speed and the exhaust velocity of motor, increase exhaust resistance, influence the fuel economy of motor.
The model utility content
The utility model technical problem to be solved is to provide a kind of self-regulation double mode exhaust silencer, the exhaust resistance that it can regulate silencing apparatus automatically according to the rotating speed and the exhaust velocity of motor.
For solving the problems of the technologies described above, the technical solution of the utility model is:
The double mode exhaust silencer of a kind of self-regulation comprises housing, inlet tube, outer pipe, interpolation pipe, spring and valve; Be formed with first expansion chamber and second expansion chamber in the said housing; Said inlet tube runs through first expansion chamber and stretches in second expansion chamber, and it is positioned on the pipeline section of first expansion chamber and has some pores; Said outer pipe runs through second expansion chamber and stretches in first expansion chamber; Said interpolation pipe is positioned at first expansion chamber, has some air outlet holes on it and communicates with first expansion chamber, forms valve port between this interpolation pipe and second expansion chamber; Said spring is positioned at interpolation pipe, and the one of which side is fixed, and opposite side links to each other with described valve, and this spring is when normality, and said valve just is covered on the described valve port.
The aperture of the air outlet hole on the said interpolation pipe is bigger than the aperture of the pore on the said inlet tube.
After adopting such scheme, the utility model adopts dual-mode structure, at silencing apparatus a control valve has been installed, when engine low rotation speed, gas flow rate are low, and valve closing, this moment, the noise elimination of silencing apparatus was respond well.And when motor was high rotating speed, gas flow rate increase, under the impact of air-flow, valve was washed open; Gas can be entered into first expansion tube by the air outlet hole on the interpolation pipe and discharge, thereby can reduce the air ventilation resistance, reduces power loss; When gas flow rate further increased, the displacement amount of valve increased, and has more air outlet hole to be opened on the interpolation pipe; Therefore can regulate exhaust resistance automatically according to the rotating speed and the exhaust velocity of motor, guarantee the power character of motor.And, after the valve open, though the airborne noise amount that produces owing to burning in the tail pipe increases; But the noise that gas current friction produces but reduces; And during high rotating speed, the gas current friction noise is the Main Ingredients and Appearance of tail pipe noise, and therefore unobstructed gas flow makes global noise reduce on the contrary.
Description of drawings
Fig. 1 is the structural representation of existing a kind of silencing apparatus;
Fig. 2 is the structural representation of the utility model;
Fig. 3 is the user mode schematic representation (during engine low rotation speed) of the utility model;
Fig. 4 is user mode schematic representation when rotating speed (motor high) of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to detail.
What the utility model disclosed is a kind of double mode silencing apparatus, as shown in Figure 2, is the preferred embodiment of the utility model.Described silencing apparatus comprises housing 1, inlet tube 2, outer pipe 3, interpolation pipe 4, spring 5 and valve 6.Wherein:
Be formed with first expansion chamber 11 and second expansion chamber 12 in the described housing 1.
Described inlet tube 2 runs through first expansion chamber 11 and stretches in second expansion chamber 12, and it is positioned on the pipeline section of first expansion chamber 11 and has some pores 21.
Described outer pipe 3 runs through second expansion chamber 12 and stretches in first expansion chamber 11.
Described interpolation pipe 4 is positioned at first expansion chamber 11, has some air outlet holes 41 on it and communicates with first expansion chamber 11, forms valve port 42 between this interpolation pipe 4 and second expansion chamber 12.
Described spring 5 is positioned at interpolation pipe 4, and the one of which side is fixed, and a side links to each other with described valve 6.This spring 5 is when normality, and described valve 6 just is covered on the described valve port 42.
Described silencing apparatus cooperates shown in Figure 3ly in use, and gas gets into from said inlet tube 2, and a part of gas enters in first expansion chamber 11 from the pore 21 on the inlet tube 2, and some gas enters in second expansion chamber 12 from the inside of inlet tube 2.When motor be in the slow-speed of revolution time, gas flow rate is lower, the gas pressures in second expansion chamber 12 are not enough to said valve 6 is opened, valve 6 sealings this moment, second expansion chamber 12 plays the effect of acoustic resonance, the noise elimination of silencing apparatus is respond well.
And when motor is in high rotating speed (normally more than the 3000r/min), the increase of gas flow rate will cause the gas pressure in second expansion chamber 12 to increase, like this under the impact of air-flow; Valve 6 is washed open, and it is mobile in interpolation pipe 4 to promote valve 6, the air outlet hole 41 that most of blast air is circumferentially arranged on interpolation pipe 4; Enter into first expansion chamber 11; And then to outer pipe 3, this moment, the circulating resistance of air reduced, and therefore can reduce the pressure loss; Reduce power loss, thereby guaranteed the power character of motor.And after valve 6 opens; Though owing to the airborne noise amount that produces of burning increases, the noise of gas current friction generation but reduces in the tail pipe, and during high rotating speed; The gas current friction noise is the Main Ingredients and Appearance of tail pipe noise, and therefore unobstructed gas flow makes global noise reduce on the contrary.When gas flow rate is big more; The displacement amount that said valve 6 moves inward is many more; The quantity of the air outlet hole 41 that is unlocked on the interpolation pipe 4 is many more, and the air ventilation resistance further reduces, thereby can regulate exhaust resistance automatically; Exhaust resistance can not increased because of the rotating speed of motor, guaranteed the power character of motor.
In addition, in order further to reduce the circulating resistance of motor gas when the high rotating speed, can make the aperture of the air outlet hole 41 on the said interpolation pipe 4 bigger than the aperture of the pore 21 on the said inlet tube 2.
Claims (2)
1. the double mode exhaust silencer of self-regulation is characterized in that: comprise housing, inlet tube, outer pipe, interpolation pipe, spring and valve; Be formed with first expansion chamber and second expansion chamber in the said housing; Said inlet tube runs through first expansion chamber and stretches in second expansion chamber, and it is positioned on the pipeline section of first expansion chamber and has some pores; Said outer pipe runs through second expansion chamber and stretches in first expansion chamber; Said interpolation pipe is positioned at first expansion chamber, has some air outlet holes on it and communicates with first expansion chamber, forms valve port between this interpolation pipe and second expansion chamber; Said spring is positioned at interpolation pipe, and the one of which side is fixed, and opposite side links to each other with described valve, and this spring is when normality, and said valve just is covered on the described valve port.
2. the double mode exhaust silencer of self-regulation according to claim 1, it is characterized in that: the aperture of the air outlet hole on the said interpolation pipe is bigger than the aperture of the pore on the said inlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120511649 CN202370617U (en) | 2011-12-09 | 2011-12-09 | Self-regulation double-mode exhaust silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120511649 CN202370617U (en) | 2011-12-09 | 2011-12-09 | Self-regulation double-mode exhaust silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370617U true CN202370617U (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120511649 Expired - Fee Related CN202370617U (en) | 2011-12-09 | 2011-12-09 | Self-regulation double-mode exhaust silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370617U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382874A (en) * | 2013-07-11 | 2013-11-06 | 哈尔滨工程大学 | Dual-resonance self-frequency-modulation silencer |
| CN104213955A (en) * | 2013-05-31 | 2014-12-17 | 佛吉亚排气控制技术开发(上海）有限公司 | Dual-mode silencer for internal combustion engine exhausting system |
| CN104353890A (en) * | 2014-09-15 | 2015-02-18 | 江苏鑫国精密模具有限公司 | Special silencer for ultra-light small-sized cold cutting machine |
| CN107288786A (en) * | 2017-06-16 | 2017-10-24 | 上海斯瑞佛汽车零部件有限公司 | A kind of silencer of air inlet pipe and the application air inlet pipe |
| CN109083726A (en) * | 2018-08-16 | 2018-12-25 | 厦门理工学院 | A kind of multi-mode automotive muffler |
| CN113323742A (en) * | 2021-07-05 | 2021-08-31 | 北京汽车集团越野车有限公司 | Silencer and vehicle |
| CN114811251A (en) * | 2022-02-25 | 2022-07-29 | 中国船舶重工集团公司第七一九研究所 | Silencer control method and device, electronic equipment and silencer |
-
2011
- 2011-12-09 CN CN 201120511649 patent/CN202370617U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104213955A (en) * | 2013-05-31 | 2014-12-17 | 佛吉亚排气控制技术开发(上海）有限公司 | Dual-mode silencer for internal combustion engine exhausting system |
| CN103382874A (en) * | 2013-07-11 | 2013-11-06 | 哈尔滨工程大学 | Dual-resonance self-frequency-modulation silencer |
| CN104353890A (en) * | 2014-09-15 | 2015-02-18 | 江苏鑫国精密模具有限公司 | Special silencer for ultra-light small-sized cold cutting machine |
| CN107288786A (en) * | 2017-06-16 | 2017-10-24 | 上海斯瑞佛汽车零部件有限公司 | A kind of silencer of air inlet pipe and the application air inlet pipe |
| CN107288786B (en) * | 2017-06-16 | 2019-05-21 | 上海斯瑞佛汽车零部件有限公司 | A kind of air inlet pipe and the silencer using the air inlet pipe |
| CN109083726A (en) * | 2018-08-16 | 2018-12-25 | 厦门理工学院 | A kind of multi-mode automotive muffler |
| CN109083726B (en) * | 2018-08-16 | 2020-03-27 | 厦门理工学院 | Multi-mode automobile muffler |
| CN113323742A (en) * | 2021-07-05 | 2021-08-31 | 北京汽车集团越野车有限公司 | Silencer and vehicle |
| CN114811251A (en) * | 2022-02-25 | 2022-07-29 | 中国船舶重工集团公司第七一九研究所 | Silencer control method and device, electronic equipment and silencer |
| CN114811251B (en) * | 2022-02-25 | 2023-08-25 | 中国船舶重工集团公司第七一九研究所 | Muffler control method and device, electronic equipment and muffler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120808 Termination date: 20141209 |
|
| EXPY | Termination of patent right or utility model |