CN202811135U - Gas-inlet silencing mechanism - Google Patents
Gas-inlet silencing mechanism Download PDFInfo
- Publication number
- CN202811135U CN202811135U CN 201220246016 CN201220246016U CN202811135U CN 202811135 U CN202811135 U CN 202811135U CN 201220246016 CN201220246016 CN 201220246016 CN 201220246016 U CN201220246016 U CN 201220246016U CN 202811135 U CN202811135 U CN 202811135U
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- China
- Prior art keywords
- chamber
- outlet pipe
- steam outlet
- cavity
- pipe
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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.)
- Expired - Lifetime
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- 230000007246 mechanism Effects 0.000 title claims abstract description 17
- 230000030279 gene silencing Effects 0.000 title abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000001743 silencing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a gas-inlet silencing mechanism. The gas-inlet silencing mechanism is connected to a pipeline consisting of a gas inlet pipe and a gas outlet pipe, and comprises a body, wherein the body is provided with a first cavity and a second cavity, the cross section of the first cavity is larger than the pipe diameter of the gas inlet pipe, the gas inlet pipe is inserted into the first cavity from the outside of the body in a sealing manner, the gas outlet pipe and the gas inlet pipe penetrate through the second cavity from the outside of the body in communication and sealing manners and then extend into the first cavity, and a plurality of silencing holes which are communicated with the second cavity are formed in the gas outlet pipe. When a gas inlet flow enters the first cavity through the gas inlet pipe, the passing section is enlarged, and the expansion silencing effect is achieved; and when the gas inlet flow flows out through the gas outlet pipe, the noise is introduced into the second cavity by the silencing holes for further absorption.
Description
Technical field
The utility model relates to a kind of noise elimination mechanism, specifically relate to a kind of be arranged on the automobile engine intake tube road intake noise reduction mechanism.
Background technique
Adding the inflow noise that silencing apparatus reduces motor at the inlet end of motor car engine has very important significance for the comfort level that improves automobile, developed gradually polytype intake noise reduction mechanism in the prior art, such as expansion silencing apparatus, quarter-wave long tube, Hull nurse silencing apparatus etc. hereby.Air-strainer can be regarded as an expansion silencing apparatus, and a principal element that affects the air-strainer soundproof effect is its volume, enter pipe inserts the length of air-strainer and the length that output tube inserts air-strainer.Hull nurse hereby silencing apparatus is that a noise elimination container and a short tube form, and short tube is connected with supervisor.Incoming wave is in supervisor's motion, and when to the noise elimination volume, a part is reflected out; Another part is divided into two shunt, and one the tunnel enters in the container or the interior air movement of promotion container, and another road continues to propagate in supervisor, forms transmitted wave.Because the variation of pipeline intersection acoustic impedance, thereby reach the noise elimination purpose.These intake noise reduction mechanisms often applied in any combination so that induction noise is absorbed.Because the limited space of automobile, these silencing apparatuss are again independent installations, so volume is larger, is not easy to layout.
The model utility content
For solving the deficiencies in the prior art, the utility model provides a kind of intake noise reduction mechanism of being convenient to arrange, its compact structure has preferably soundproof effect.
For achieving the above object, intake noise reduction of the present utility model mechanism, connect and be arranged on the pipeline that is formed by suction tude and steam outlet pipe, comprise the body with the first chamber and second chamber, the cross-section area of described the first chamber is greater than the caliber of suction tude, described suction tude is inserted in the first chamber by the body exterior sealing, and time-delay was provided with a plurality of sound attenuation holes that are communicated with the second chamber at steam outlet pipe after steam outlet pipe and suction tude connected the second chamber by the body exterior sealing communicatively to the first chamber.
As the restriction to aforesaid way, suction tude and spacing setting relative with the mouth of pipe of steam outlet pipe in the first chamber.
As the restriction to aforesaid way, be provided with branched pipe at the sidewall of suction tude.
As the restriction to aforesaid way, described the second chamber is surrounded by two thin plates on inner body wall and spacing sealing suit and the steam outlet pipe, that outer and body are sealed and matched.
As the restriction to aforesaid way, relative the first chamber of described the second chamber is the hole enlargement structure, and the body internal cause hole enlargement of being combined with the second chamber in the first chamber forms the boss that thin plate is positioned.
As the restriction to aforesaid way, described body is cylindrical.
Adopt as above technological scheme, its effect is as follows:
When 1, charge air flow enters the first chamber by suction tude, become large by the cross section, have the effect that expansion is eliminated the noise, when flowing out by steam outlet pipe, noise is introduced the second chamber by sound attenuation hole and is further absorbed; Relative and the spacing setting of the mouth of pipe of suction tude and steam outlet pipe so that both mouth of pipe places have less relative gap, is conducive to add the effect that strong extension is eliminated the noise; It has realized the absorption to the noise of different frequency, is convenient to arrange;
2, in suction tude branched pipe is set, this branched pipe can be with respect to 1/4th pipes, and absorption wavelength is the noise of four times of this branched pipes;
3, the thin plate and the body that are set with at steam outlet pipe form the second chamber, and manufacture cost is lower, are easy to realize; At body boss is set thin plate is positioned, be convenient to being in place of thin plate;
4, body is cylindrical, is beneficial to thin plate and matches, and also is convenient to simultaneously make.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the utility model is done further to describe in detail:
Fig. 1 is the utility model structural representation;
Among the figure: 10, body; 11, the first chamber; 12, the second chamber; 13, suction tude; 14, steam outlet pipe; 15, branched pipe; 16, sound attenuation hole; 17, thin plate; 18, boss.
Embodiment
In the intake noise reduction mechanism of present embodiment as shown in Figure 1, in columniform body 10 bottoms steam outlet pipe 14 is housed, at intervals sealing fixedly has been set with two thin plates 17 on the steam outlet pipe 14, and the steam outlet pipe 14 in the middle of thin plate 17 is densely covered with sound attenuation hole 16.Behind body 10 inside that steam outlet pipe 14 is packed into, the outer of thin plate 17 combines with body 10, the inwall of two thin plates 17 and body 10 has surrounded the second chamber 12 jointly, the second chamber 12 tops are the first chamber 11, the zones that steam outlet pipe 14 is positioned in the middle of two thin plates 17 have offered a plurality of sound attenuation holes 16, and these sound attenuation holes 16 have been realized being communicated with of steam outlet pipe 14 and the second chamber 12.
The top of body 10 is inserted with suction tude 13, and the relative and spacing setting of the mouth of pipe of suction tude 13 and steam outlet pipe 14 simultaneously, is connected with branched pipe 15 at the sidewall of suction tude 13.
The second chamber 12 relative the first chambers 11 are the hole enlargement structure, enlarge in relative its upper diameter in the bottom of body 10 and form boss 18, and steam outlet pipe 14 is when inserting body 10 inside, and the thin plate 17 of front end therewith boss 18 contacts, thereby steam outlet pipe 14 is positioned.
Claims (6)
1. intake noise reduction mechanism, connect and be arranged on the pipeline that is formed by suction tude (13) and steam outlet pipe (14), comprise the body (10) with the first chamber (11) and second chamber (12), the cross-section area of described the first chamber (11) is greater than the caliber of suction tude (13), it is characterized in that: described suction tude (13) is inserted in the first chamber (11) by body (10) outside seal, time-delay was provided with a plurality of sound attenuation holes (16) that are communicated with the second chamber (12) at steam outlet pipe (14) after steam outlet pipe (14) connected the second chamber (12) by body (10) outside seal communicatively with suction tude (13) to the first chamber (11).
2. intake noise reduction according to claim 1 mechanism is characterized in that: suction tude (13) and the relative and spacing setting of the mouth of pipe of steam outlet pipe (14) in the first chamber (11).
3. intake noise reduction according to claim 1 mechanism, it is characterized in that: the sidewall in suction tude (13) is provided with branched pipe (15).
4. each described intake noise reduction mechanism in 3 according to claim 1 is characterized in that: described the second chamber (12) is surrounded by two thin plates (17) on body (10) inwall and spacing sealing suit and the steam outlet pipe (14), that outer and body (10) are sealed and matched.
5. intake noise reduction according to claim 4 mechanism, it is characterized in that: relative the first chamber of described the second chamber (12) (11) is for the hole enlargement structure, forms the boss (18) that thin plate (17) is positioned in body (10) the internal cause hole enlargement of the first chamber (11) and the second chamber (12) combination.
6. intake noise reduction according to claim 4 mechanism, it is characterized in that: described body (10) is for cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246016 CN202811135U (en) | 2012-05-29 | 2012-05-29 | Gas-inlet silencing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246016 CN202811135U (en) | 2012-05-29 | 2012-05-29 | Gas-inlet silencing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811135U true CN202811135U (en) | 2013-03-20 |
Family
ID=47870021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246016 Expired - Lifetime CN202811135U (en) | 2012-05-29 | 2012-05-29 | Gas-inlet silencing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822469A (en) * | 2016-05-11 | 2016-08-03 | 安徽江淮汽车股份有限公司 | Noise abatement device of engine air inlet system |
-
2012
- 2012-05-29 CN CN 201220246016 patent/CN202811135U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822469A (en) * | 2016-05-11 | 2016-08-03 | 安徽江淮汽车股份有限公司 | Noise abatement device of engine air inlet system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |