KR101772267B1 - Resonator for vehicle - Google Patents
Resonator for vehicle Download PDFInfo
- Publication number
- KR101772267B1 KR101772267B1 KR1020150055091A KR20150055091A KR101772267B1 KR 101772267 B1 KR101772267 B1 KR 101772267B1 KR 1020150055091 A KR1020150055091 A KR 1020150055091A KR 20150055091 A KR20150055091 A KR 20150055091A KR 101772267 B1 KR101772267 B1 KR 101772267B1
- Authority
- KR
- South Korea
- Prior art keywords
- pipe
- outer pipe
- air
- resonance chamber
- resonator
- Prior art date
Links
- 238000010168 coupling process Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 description 12
- 238000013461 design Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2210/00—Combination of methods of silencing
- F01N2210/02—Resonance and interference
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Exhaust Silencers (AREA)
Abstract
The present invention relates to a resonator having a resonance chamber for tuning a frequency and having an inlet port as an air inlet channel and an outlet port as an outflow channel of the air, the first external pipe having the inlet and the outlet An outer pipe having a first outer pipe, an outer pipe having a second outer pipe, an inner pipe disposed inside the outer pipe and having a plurality of slits for providing a moving path of air, And one end of the expanding pipe is disposed at a predetermined distance from the outer pipe so as to form an interval which is a movement path of the air. The resonator includes a plurality of resonance chambers, .
Description
More particularly, the present invention relates to a resonator for a vehicle, and more particularly to a resonator having a plurality of bends formed between an outer pipe and an inner pipe inserted therein so that a difference in diameter between an inlet and an outlet of air passing through the resonator is large, The present invention relates to a resonator for a vehicle that can improve the degree of freedom in tuning the frequency of air.
Generally, an intake system of an automobile is provided with an air cleaner, a turbocharger, an intercooler, an air duct, and an engine manifolder, The external air introduced into the internal combustion engine by the system repeatedly expands and compresses, causing the intake pulsation. Such a pulsation of the intake air causes noise according to the pressure change of the air, and in particular, caused a resonance phenomenon of the air in the vehicle body or the interior space of the vehicle, resulting in a larger noise.
In order to suppress such intake noise, a resonator is installed in the intake hose connecting the air cleaner and the intake manifold, for tuning the intake system to a specific frequency.
As an example of a resonator according to the related art, a resonator disclosed in Korean Patent Laid-Open Publication No. 10-2006-0116275 (published on November 15, 2006) includes an outer pipe forming an outer shape, And an internal pipe that is installed and provides a passage for air. A resonance chamber for reducing noise by tuning the frequency of air is formed in the space between the outer pipe and the inner pipe, and a slit for guiding the movement of air to the resonance chamber is formed in the inner pipe. That is, the air flowing into the inner pipe moves to the resonance chamber through the slit, and the frequency of the air moved to the resonance chamber is tuned to reduce the noise of the air.
However, such a resonator has a problem that the frequency tuning of the outside air can not be performed over a wide band because the number of resonance chambers is limited. That is, since the resonator has a limited number of resonance chambers, the tuning freedom of the frequency is low, so that noise reduction of the outside air can not be smoothly performed.
As another example of a resonator according to the prior art, Korean Patent Laid-Open Publication No. 10-2011-0007460 (published on Jan. 24, 2011) discloses a resonator in which the diameters of the inlet and outlet of the air are different from each other. Generally, if the diameter of the air inlet and the diameter of the outlet of the air are different from each other, the inner pipe coupled with the outer pipe needs to be manufactured so as to form an inclined portion at an angle.
However, there is a manufacturing problem that if the diameter of the inlet and the outlet, which are air passages, differ by 1.4 to 1.5 times or more, the internal pipe can not be easily expanded. In addition, since the inclined portion of the inner pipe is formed in a limited space, it is difficult to manufacture a slit for tuning the frequency at the inclined portion.
SUMMARY OF THE INVENTION The present invention has been developed in order to solve the problems and limitations of the prior art as described above, and it is an object of the present invention to provide a resonator having a large diameter difference between an inlet and an outlet of air, The present invention has an object of providing a resonator for a vehicle which can increase the degree of freedom in tuning the frequency of air and facilitate the manufacture of the resonator since a plurality of bending portions forming a resonance chamber are formed.
According to an aspect of the present invention, there is provided a resonator having a resonance chamber for tuning a frequency, the resonance chamber having an inlet port, which is an inlet port for air, and an outlet port, which is an outlet port for air, An outer pipe having an outer pipe and a second outer pipe with the outlet formed therein, an inner pipe disposed inside the outer pipe and having a plurality of slits for providing a path for air movement, And an expansion pipe inserted between the outer pipe and the inner pipe and dividing the resonance chamber into a plurality of pipes, wherein one end of the expansion pipe is spaced apart from the outer pipe by a predetermined distance Thereby providing an on-vehicle resonator.
According to the present invention, since an expansion pipe is inserted between an outer pipe and an inner pipe, and a gap, which is a passage of air, is formed between the expansion pipe and the outer pipe, the number of resonance chambers increases, There are advantages.
In addition, the resonance chamber in which the gap is formed has an advantage that air having a high frequency can be absorbed.
In addition, even if the diameter difference between the inlet and the outlet of the resonator is large, it is not necessary that one end of the pipe is coupled to the outer pipe, so that it is easy to manufacture the resonance chamber in the resonator.
Further, even if the inlet and the outlet of the resonator are formed to have diameters different from each other, there is no need to manufacture an inclined portion in the inner pipe, so that the inner space of the resonator can be efficiently used.
In addition, since the outer pipe, the inner pipe, and the expanding pipe are hermetically coupled to each other through welding, leakage of outside air is prevented, thereby maximizing the efficiency of reducing intake noise.
1 is a perspective view of a resonator according to an embodiment of the present invention.
2A and 2B are exploded views showing the internal structure of the resonator.
3 is a cross-sectional view taken along the line I-I 'of FIG.
4 is a cross-sectional view taken along line II-II 'of FIG.
5 is a view showing a flow of air passing through a resonator according to an embodiment of the present invention.
6 is a view for explaining the size of a plurality of pipes constituting the first resonance chamber and the size of the interval for guiding the movement of air to the first resonance chamber.
FIG. 7 is a graph showing a noise reduction amount according to the frequency of air moving to the first resonance chamber.
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby.
FIG. 1 is a perspective view of a resonator according to an embodiment of the present invention, FIG. 2 (a) is an exploded view showing the detailed components of the resonator, and FIG. 2 (b) is a perspective view of an expanding pipe, which is a component of the resonator. FIG. 3 is a cross-sectional view taken along the line I-I 'of FIG. 1 to show the internal structure of the resonator, and FIG. 4 is a cross-sectional view taken along the line II-II' of FIG.
The
An inner pipe (40) can be inserted into the inner space of the first outer pipe (10) and the second outer pipe (20). At this time, if the end diameter (A) of the first outer pipe is 1.4 times to 1.5 times the end diameter (B) of the second outer pipe, one end of the inner pipe (40) (10, 20).
Accordingly, in the present invention, an
The
The
The other end of the
The
The height M of the
Conventionally, when the diameters of the inlet and the outlet are different, a sloping portion has to be formed in order for the inner pipe to be directly coupled to the outer pipe. According to the present invention, since the
The
A
The
Hereinafter, the movement path of the external air passing through the
5 is a view showing a flow of air passing through a resonator according to an embodiment of the present invention.
As shown in the drawing, the
In the present embodiment, the plurality of pipes are coupled to each other by the welding method. However, the coupling method is not limited thereto. In the case where the plurality of pipes are airtightly coupled to each other, It is also possible. According to the above-described method, the
On the other hand, the resonator according to the related art has a limited number of resonance chambers due to manufacturing problems. In contrast, the resonator according to the present embodiment has a structure capable of easily tuning the frequency, unlike the conventional resonator structure.
However, the size of the plurality of
6, the
The design conditions for absorbing air having a high frequency in the
The diameter D1 of the first
Table 1 below shows a
Maximum frequency of air (Hz)
0.3
As can be seen from the above table, the
Maximum frequency of air (Hz)
0.2
Even if the values of D1 / D2 and L / D2 increase as shown in Table 2 with W / D2 of 0.2, the overall structure of the
In FIG. 7, in accordance with the frequency of the air absorbed in the
Hereinafter, the traveling path of the outside air passing through the
A part of the air introduced into the
Likewise, a part of the air moving along the
In this embodiment, as the air introduced through the
The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.
1: Resonator
10: First outer pipe
20: second outer pipe
30: Extension pipe
40: Internal pipe
41: slit
100: Resonance room
Claims (8)
An outer pipe having a first outer pipe formed with the inlet and a second outer pipe formed with the outlet;
An inner pipe disposed inside the outer pipe and having a plurality of slits providing a path for air movement; And
And an expansion pipe which is formed to expand a diameter of a part of the outer periphery and is inserted between the outer pipe and the inner pipe and divides the resonance chamber into a plurality of pipes,
One end of the expansion pipe
And a distance which is a predetermined distance from the outer pipe so as to form a gap,
Wherein the expanding pipe includes an inner engaging portion engaged with the inner pipe, an outer engaging portion engaging with the outer pipe, and a plurality of bending portions extending in a direction orthogonal to the inner pipe and the outer pipe,
The plurality of bending portions may include a first bending portion disposed adjacent to the inlet and having one end connected to the internal coupling portion in a direction orthogonal to the first bending portion, one end connected to the internal coupling portion in an orthogonal direction, And a third bending portion disposed adjacent to the outlet and having one end connected to the external coupling portion in an orthogonal direction,
And the height of the second bent portion and the third bent portion is greater than the height of the first bent portion.
Wherein a distal end portion of the first bent portion is bent in a direction parallel to the extending direction of the first outer pipe so that the first outer pipe and the first bent portion are spaced apart by a predetermined distance,
And the distal end portion of the third bent portion is bent in a direction parallel to the extending direction of the inner pipe for engagement with the inner pipe.
Wherein the plurality of slits include a first slit disposed adjacent to the inlet and a second slit spaced a predetermined distance from the first slit with respect to a moving direction of the air,
Wherein the resonance chamber includes a first resonance chamber communicating with the gap, a second resonance chamber communicating with the first slit, and a third resonance chamber communicating with the second slit.
Wherein the diameter of the outer pipe constituting one surface of the first resonance chamber has a value of 1.4 to 1.6 times the diameter of the inner coupling portion.
And the height of the inner coupling portion is 0.3 times the diameter of the inner coupling portion.
Wherein the width of the gap has a value of 0.04 to 0.12 times the diameter of the internal coupling portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020140100471 | 2014-08-05 | ||
KR20140100471 | 2014-08-05 |
Publications (2)
Publication Number | Publication Date |
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KR20160016556A KR20160016556A (en) | 2016-02-15 |
KR101772267B1 true KR101772267B1 (en) | 2017-08-28 |
Family
ID=55357244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020150055091A KR101772267B1 (en) | 2014-08-05 | 2015-04-20 | Resonator for vehicle |
Country Status (1)
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KR (1) | KR101772267B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101954728B1 (en) * | 2017-06-16 | 2019-03-06 | 삼성중공업 주식회사 | Silencer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5901754A (en) | 1996-03-20 | 1999-05-11 | Witzenmann Gmbh Metallschlauch-Fabrik Pforzheim | Flexible fluid conduit element with a metal bellows |
-
2015
- 2015-04-20 KR KR1020150055091A patent/KR101772267B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5901754A (en) | 1996-03-20 | 1999-05-11 | Witzenmann Gmbh Metallschlauch-Fabrik Pforzheim | Flexible fluid conduit element with a metal bellows |
Also Published As
Publication number | Publication date |
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KR20160016556A (en) | 2016-02-15 |
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