CN214787756U - Noise reduction air inlet pipe structure - Google Patents
Noise reduction air inlet pipe structure Download PDFInfo
- Publication number
- CN214787756U CN214787756U CN202120156769.8U CN202120156769U CN214787756U CN 214787756 U CN214787756 U CN 214787756U CN 202120156769 U CN202120156769 U CN 202120156769U CN 214787756 U CN214787756 U CN 214787756U
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- China
- Prior art keywords
- cavity
- air inlet
- intake duct
- noise reducing
- auxiliary
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- Expired - Fee Related
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- 238000005192 partition Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 3
- 230000002889 sympathetic effect Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a noise reduction air inlet pipe structure, wherein a shell comprises a main cavity part and an auxiliary cavity part, and an air inlet and an air outlet are arranged on the main cavity part; a partition rib is arranged between the main cavity part and the auxiliary cavity part to partition the inner cavity of the shell into a main cavity body and an auxiliary cavity body; the partition ribs are provided with through holes for communicating the main cavity with the auxiliary cavity, and the through holes and the auxiliary cavity jointly form a resonant cavity. The utility model discloses a sound wave in the air current is subducted to the resonant cavity, avoids producing the cavity sympathetic response, noise reduction.
Description
Technical Field
The utility model belongs to the technical field of the engine air intake system technique of making an uproar and specifically relates to an air inlet pipe structure of making an uproar falls.
Background
The air inlet pipe plays a role of a connecting piece in an engine air inlet system and is connected with an air filter and an upper air inlet channel. The traditional air inlet pipe is mainly communicated with the whole air inlet system to play a role in gas circulation; because the air flow of the engine air inlet system is large, the flow rate is high, and the air flow is easy to generate low-frequency resonance in the cavity of the air inlet pipe to generate larger noise.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the defect that low-frequency resonance is easily generated in the cavity of the existing air inlet pipe to generate large noise, and provides a noise-reducing air inlet pipe structure with a reasonable structure, so that the resonance of the cavity is avoided, and the noise is reduced.
The utility model discloses the technical scheme who adopts as follows:
a noise reduction air inlet pipe structure comprises a shell, a noise reduction air inlet pipe and a noise reduction air outlet pipe, wherein the shell comprises a main cavity part and an auxiliary cavity part, and an air inlet and an air outlet are formed in the main cavity part; a partition rib is arranged between the main cavity part and the auxiliary cavity part to partition the inner cavity of the shell into a main cavity body and an auxiliary cavity body; the partition ribs are provided with through holes for communicating the main cavity with the auxiliary cavity, and the through holes and the auxiliary cavity jointly form a resonant cavity.
The utility model discloses a sound wave in the air current is subducted to the resonant cavity, avoids producing the cavity sympathetic response, noise reduction.
As a further improvement of the above technical solution:
the through hole is obliquely opened upwards towards the air inlet.
The utility model discloses a through-hole is seted up in the air inlet slant, and the air current can in time get into vice cavity through the through-hole and carry out the resonance and fall and make an uproar after getting into from the air inlet, more is favorable to the timely effective absorption sound energy of resonant cavity, noise reduction.
The cavity volume ratio of the auxiliary cavity to the main cavity is 1/4-2/5.
The utility model discloses when effectively making an uproar, guarantee that the main cavity has enough big mainstream passageway volume, avoid the air current flow resistance too big and increase the air current backpressure.
The partition ribs are formed by kneading inwardly from the front and rear wall surfaces.
The air inlet is positioned obliquely above the auxiliary cavity part.
The air inlet is vertically arranged; the air outlet extends outward in an obliquely downward direction from the front side surface of the main chamber portion.
The outer end opening part of the air outlet is provided with a plurality of notches which run through the wall surface along the circumferential direction.
The utility model discloses a notch of the outer end oral area of gas outlet can provide certain deformation allowance for the oral area of gas port for the bore of gas outlet can enlarge or reduce, thereby realize with the accordant connection of different connecting pipes, enlarged application scope.
The bottom of the main cavity part is provided with a water outlet, and a drain valve is arranged on the water outlet.
The water outlet is positioned obliquely below the air outlet.
An air inlet grille frame is arranged on the air inlet and is fixedly connected to the air inlet through rivets.
The utility model has the advantages as follows:
the utility model discloses a sound wave in the air current is subducted to the resonant cavity, avoids producing the cavity sympathetic response, noise reduction.
The utility model discloses a through-hole is seted up in the air inlet slant, and the air current can in time get into vice cavity through the through-hole and carry out the resonance and fall and make an uproar after getting into from the air inlet, more is favorable to the timely effective absorption sound energy of resonant cavity, noise reduction.
The utility model discloses when effectively making an uproar, guarantee that the main cavity has enough big mainstream passageway volume, avoid the air current flow resistance too big and increase the air current backpressure.
The utility model discloses a notch of the outer end oral area of gas outlet can provide certain deformation allowance for the oral area of gas port for the bore of gas outlet can enlarge or reduce, thereby realize with the accordant connection of different connecting pipes, enlarged application scope.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a right side view of the present invention.
Fig. 4 is a sectional view taken along line B-B of fig. 3.
Fig. 5 is a sectional view of the C-C of fig. 3.
In the figure: 1. a housing; 11. separating ribs; 12. a main chamber section; 13. a minor chamber portion; 14. a main chamber; 15. a secondary cavity; 16. an air inlet; 17. an air outlet; 171. a notch; 18. a through hole; 19. a water outlet; 2. an air intake grille frame; 3. and (4) draining the water valve.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 to 5, the casing 1 of the present invention includes a main chamber portion 12 and a sub chamber portion 13, the sub chamber portion 13 is located on the left upper portion of the main chamber portion 12, a separation rib 11 is provided between the main chamber portion 12 and the sub chamber portion 13, the separation rib 11 is formed by inwardly concave kneading from the front and rear wall surfaces, and the separation rib 11 separates the internal cavity of the casing 1 into a main chamber 14 in the main chamber portion 12 and a sub chamber 15 in the sub chamber portion 13. A vertical air inlet 16 is formed in the top of the main cavity part 12 and is positioned above the auxiliary cavity part 13 in an inclined mode, an air inlet grille frame 2 is arranged on the air inlet 16, and the air inlet grille frame 2 is fixedly connected to the air inlet 16 through rivets; the front side of the lower part of the main cavity part 12 is provided with an air outlet 17, the air outlet 17 extends outwards from the front side surface of the main cavity part 12 in a downward oblique direction, the opening part of the outer end of the air outlet 17 is provided with a plurality of U-shaped notches 171 running through the wall surface along the circumferential direction, and the notches 171 can provide a certain deformation allowance for the opening part of the air outlet 17, so that the caliber of the air outlet 17 can be enlarged or reduced, thereby realizing the matching connection with different connecting pipes and enlarging the application range; a drain port 19 is formed in the bottom of the main chamber section 12 obliquely below the air outlet 17, and the drain valve 3 is provided in the drain port 19.
As shown in fig. 2, 4 and 5, the partition rib 11 is provided with a through hole 18 for communicating the main cavity 14 with the auxiliary cavity 15, the through hole 18 and the auxiliary cavity 15 together form a resonant cavity, and sound waves in air flow can enter the auxiliary cavity 15 through the through hole 18 to generate resonance, thereby achieving the purpose of reducing noise; the cavity volume ratio of the auxiliary cavity 15 to the main cavity 14 is 1/4-2/5, so that the main cavity 14 is ensured to have a large enough main flow channel volume while noise is effectively reduced, and airflow back pressure is prevented from being increased due to overlarge airflow resistance. As shown in fig. 2, the through hole 18 is formed obliquely upward toward the air inlet 16, and the air flow entering from the air inlet 16 can enter the auxiliary cavity 15 through the through hole 18 to perform resonance noise reduction, which is more beneficial to the resonant cavity to effectively absorb sound energy in time and reduce noise.
In actual use, the air flow enters the main chamber 14 from the air intake grille 2 and is discharged from the air outlet 17; the moisture separated in the air flow is discharged from the water discharge port 19; part of sound waves in the air flow enter the resonant cavity through the through holes 18 to generate resonance, so that the purpose of noise reduction is achieved.
The utility model discloses a sound wave in the air current is subducted to the resonant cavity, avoids producing the cavity sympathetic response, noise reduction.
The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.
Claims (10)
1. The utility model provides an air inlet pipe structure of making an uproar falls which characterized in that: the shell (1) comprises a main cavity part (12) and an auxiliary cavity part (13), wherein the main cavity part (12) is provided with an air inlet (16) and an air outlet (17); a separation rib (11) is arranged between the main cavity part (12) and the auxiliary cavity part (13) to separate the internal cavity of the shell (1) into a main cavity body (14) and an auxiliary cavity body (15); the partition ribs (11) are provided with through holes (18) to conduct the main cavity (14) and the auxiliary cavity (15), and the through holes (18) and the auxiliary cavity (15) jointly form a resonant cavity.
2. A noise reducing air intake duct structure as defined in claim 1, wherein: the through hole (18) is obliquely opened upwards towards the air inlet (16).
3. A noise reducing air intake duct structure as defined in claim 1, wherein: the cavity volume ratio of the auxiliary cavity (15) to the main cavity (14) is 1/4-2/5.
4. A noise reducing air intake duct structure as defined in claim 1, wherein: the partition ribs (11) are formed by kneading from the front and rear wall surfaces to the inside.
5. A noise reducing air intake duct structure as defined in claim 1, wherein: the air inlet (16) is positioned obliquely above the auxiliary chamber section (13).
6. A noise reducing air intake duct structure as defined in claim 1, wherein: the air inlet (16) is vertically arranged; the air outlet (17) extends outward in an obliquely downward direction from the front side surface of the main chamber portion (12).
7. A noise reducing air intake duct structure as defined in claim 1, wherein: the outer end opening part of the air outlet (17) is provided with a plurality of notches (171) which penetrate through the wall surface along the circumferential direction.
8. A noise reducing air intake duct structure as defined in claim 1, wherein: a water outlet (19) is arranged at the bottom of the main cavity part (12), and a drain valve (3) is arranged on the water outlet (19).
9. A noise reducing air intake duct structure as defined in claim 8, wherein: the drain opening (19) is located obliquely below the air outlet (17).
10. A noise reducing air intake duct structure as defined in claim 1, wherein: an air inlet grille frame (2) is arranged on the air inlet (16), and the air inlet grille frame (2) is fixedly connected to the air inlet (16) through rivets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120156769.8U CN214787756U (en) | 2021-01-21 | 2021-01-21 | Noise reduction air inlet pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120156769.8U CN214787756U (en) | 2021-01-21 | 2021-01-21 | Noise reduction air inlet pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214787756U true CN214787756U (en) | 2021-11-19 |
Family
ID=78748663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120156769.8U Expired - Fee Related CN214787756U (en) | 2021-01-21 | 2021-01-21 | Noise reduction air inlet pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214787756U (en) |
-
2021
- 2021-01-21 CN CN202120156769.8U patent/CN214787756U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |