CN213392584U - Noise reduction wavelength tube for air inlet pipeline of whole vehicle air compressor - Google Patents
Noise reduction wavelength tube for air inlet pipeline of whole vehicle air compressor Download PDFInfo
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- CN213392584U CN213392584U CN202022463716.9U CN202022463716U CN213392584U CN 213392584 U CN213392584 U CN 213392584U CN 202022463716 U CN202022463716 U CN 202022463716U CN 213392584 U CN213392584 U CN 213392584U
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- inlet pipeline
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Abstract
The utility model discloses a whole car air compressor machine air inlet pipeline noise-reducing wave long tube, including air inlet pipeline, air inlet and gas outlet, be equipped with the closed reflecting tube on the air inlet pipeline perpendicularly, the tip of closed reflecting tube is equipped with block structure. The utility model discloses a noise wave long tube falls in whole car air compressor machine air inlet pipeline belongs to engine technical field, has set up the closed reflection pipe on the air inlet pipeline, utilizes the principle that sine wave and the cosine wave of reflection can offset each other, makes the noise sound wave weakened greatly to reduce the air compressor machine noise of inflating, the structure is simpler, and the cost is cheaper, accepts for the customer more easily.
Description
Technical Field
The utility model relates to an engine technology, more specifically say, it relates to a whole car air compressor machine air inlet pipeline noise reduction wave long tube.
Background
At present, fuel oil and gas commercial automobiles at home and abroad are generally provided with an air compressor to provide compressed air for auxiliary braking. The air inlet of the air compressor is guided by an air inlet pipeline behind an air filter of the engine and in front of a supercharger air compressor, and due to structural arrangement reasons, when most vehicles work at the air compressor, air shunting of the air compressor can cause abnormal noise of the air inlet pipeline of the engine, which is commonly called inflating noise.
Some passenger cars, high-end passenger cars and trucks may design a dedicated helmholtz noise-damping cavity with reference to an exhaust muffler, but the structure is expensive and general vehicles are not equipped with the helmholtz noise-damping cavity.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to prior art some not enough of the aforesaid, the utility model aims at providing a whole car air compressor machine air inlet pipeline noise-reducing wave long tube that noise reduction effect is good.
In order to achieve the above object, the utility model provides a whole car air compressor machine air inlet pipeline falls noise wave long tube, including air inlet pipeline, air inlet and gas outlet, be equipped with the closed reflection pipe on the air inlet pipeline perpendicularly, the tip of closed reflection pipe is equipped with block structure.
Further, the blocking structure is a nut structure.
Further, the length L of the closed reflection pipe is one quarter of the maximum wavelength λ of the noise sound wave.
Furthermore, the air inlet pipeline comprises an air compressor opening connecting section, an engine air inlet pipeline opening connecting section and a straight pipe section, the air compressor opening connecting section and the engine air inlet pipeline opening connecting section are arranged at two ends of the air inlet pipeline, the straight pipe section is arranged in the middle of the air inlet pipeline, and the closed reflection pipe is perpendicular to the straight pipe section.
As a further improvement, the straight pipe section is of a hard pipe structure, and the opening connecting section of the air compressor and the opening connecting section of the engine air inlet pipeline are of hose structures.
Furthermore, the closed reflection pipe is arranged at one end of the straight pipe section close to the opening connecting section of the engine air inlet pipeline.
Advantageous effects
Compared with the prior art, the utility model discloses a whole car air compressor machine air inlet pipeline falls noise wave long tube's beneficial effect as follows:
the utility model discloses a noise wave long tube falls in whole car air compressor machine air inlet pipeline has set up the closed reflection pipe on the air inlet pipeline, utilizes the principle that sine wave and the cosine wave of reflection can offset each other, makes the noise sound wave weakened greatly to reduce the air compressor machine noise of inflating, the structure is simpler, and the cost is cheaper, accepts for the customer more easily.
Drawings
Fig. 1 is the utility model discloses a whole car air compressor machine air inlet pipeline falls the structural schematic diagram of noise wave long pipe.
In the figure: 1. an air intake line; 11. an air compressor opening connecting section; 12. a straight pipe section; 13. an engine air inlet pipeline opening connecting section; 2. a closed reflection tube; 3. and (4) a plugging structure.
Detailed Description
The present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention, but are intended to be covered by the appended claims in any way.
The specific embodiment of the present invention is such: referring to fig. 1, the noise reduction wave long pipe for the air inlet pipeline of the whole vehicle air compressor comprises an air inlet pipeline 1, an air inlet and an air outlet, wherein a closed reflection pipe 2 is vertically arranged on the air inlet pipeline 1, and a blocking structure 3 is arranged at the end part of the closed reflection pipe 2. In this whole car air compressor machine air inlet pipeline noise wave long pipe, air inlet pipeline 1 is last to have set up closed reflection pipe 2, the length L of closed reflection pipe 2 is 1/5 lambda to 1/3 of maximum noise sound wave wavelength lambda, because the noise sound wave is the sine wave, the sound wave passes to the tip in 1/5 lambda to 1/3 lambda length L's closed reflection pipe 2 then the back wave that reflects back is the cosine wave, sine wave and cosine wave can offset each other, consequently, can the noise absorption through closed reflection pipe 2, the noise sound wave has been weakened greatly, thereby reduce the air compressor machine noise of inflating, the structure is simpler, the cost is cheaper, accept for the customer more easily.
In this embodiment, the blocking structure 3 is a nut structure, which is convenient to install and can rapidly block the opening of the closed reflection tube 2.
In the present embodiment, the length L of the closed reflection pipe 2 is one quarter of the maximum wavelength λ of the noise sound wave, so that most of the sound wave of the maximum noise can be cancelled or absorbed, and meanwhile, part of the noise of other frequencies can be absorbed.
In this embodiment, the air intake pipeline 1 includes an air compressor opening connecting section 11, an engine air intake pipeline opening connecting section 13 and a straight pipe section 12, the straight pipe section 12 is arranged in the middle of the air intake pipeline, the closed reflection pipe 2 is perpendicular to the straight pipe section 12, and the closed reflection pipe 2 is communicated with the straight pipe section 12.
In the embodiment, the straight pipe section 12 is of a hard pipe structure, and the straight pipe section 12 is not easy to deform, so that sound waves can be transmitted linearly along the axial direction of the pipe section, and the vertically arranged closed reflection pipe 2 can weaken the sound waves of noise; the air compressor opening connecting section 11 and the engine air inlet pipeline opening connecting section 13 are flexible hose structures which can be bent, are convenient to connect and are suitable for structural arrangement in an engine cabin.
In the present embodiment, the closed reflection pipe 2 is provided on the end of the straight pipe section 12 near the engine intake pipe opening connecting section 13, that is, near the air outlet, which can attenuate more noise due to the flow of air.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (6)
1. The utility model provides a whole car air compressor machine air inlet pipeline noise wave reduction long tube, includes air inlet pipeline (1), air inlet and gas outlet, its characterized in that, be equipped with on air inlet pipeline (1) perpendicularly and close a reflecting tube (2), the tip of closing a reflecting tube (2) is equipped with block structure (3).
2. The noise reduction wave tube of the air inlet pipeline of the air compressor of the whole vehicle as claimed in claim 1, wherein the blocking structure (3) is a nut structure.
3. The air inlet pipeline noise reduction pipe for the whole vehicle air compressor as claimed in claim 1, wherein the length L of the closed reflection pipe (2) is one quarter of the maximum wavelength λ of noise sound waves.
4. The air inlet pipeline noise reduction wave tube of the whole vehicle air compressor as claimed in claim 1, 2 or 3, wherein the air inlet pipeline (1) comprises an air compressor opening connecting section (11) arranged at two ends, an engine air inlet pipeline opening connecting section (13) and a straight pipe section (12) arranged in the middle, and the closed reflecting pipe (2) is arranged perpendicular to the straight pipe section (12).
5. The noise reduction wave tube for the air inlet pipeline of the whole vehicle air compressor as claimed in claim 4, wherein the straight tube section (12) is of a hard tube structure, and the air compressor opening connecting section (11) and the engine air inlet pipeline opening connecting section (13) are of a hose structure.
6. The noise reduction wave tube for the air inlet pipeline of the whole vehicle air compressor as claimed in claim 5, wherein the closed reflection tube (2) is arranged at one end of the straight tube section (12) close to the opening connecting section (13) of the air inlet pipeline of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463716.9U CN213392584U (en) | 2020-10-30 | 2020-10-30 | Noise reduction wavelength tube for air inlet pipeline of whole vehicle air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463716.9U CN213392584U (en) | 2020-10-30 | 2020-10-30 | Noise reduction wavelength tube for air inlet pipeline of whole vehicle air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213392584U true CN213392584U (en) | 2021-06-08 |
Family
ID=76191776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022463716.9U Active CN213392584U (en) | 2020-10-30 | 2020-10-30 | Noise reduction wavelength tube for air inlet pipeline of whole vehicle air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213392584U (en) |
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2020
- 2020-10-30 CN CN202022463716.9U patent/CN213392584U/en active Active
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