CN201284682Y - Silencer structure - Google Patents
Silencer structure Download PDFInfo
- Publication number
- CN201284682Y CN201284682Y CNU2008201763132U CN200820176313U CN201284682Y CN 201284682 Y CN201284682 Y CN 201284682Y CN U2008201763132 U CNU2008201763132 U CN U2008201763132U CN 200820176313 U CN200820176313 U CN 200820176313U CN 201284682 Y CN201284682 Y CN 201284682Y
- Authority
- CN
- China
- Prior art keywords
- perforated pipe
- traveler
- pipe
- steel traveler
- acoustic wave
- Prior art date
- 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
Links
- 230000003584 silencer Effects 0.000 title abstract description 8
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000011358 absorbing material Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 2
- 239000002250 absorbent Substances 0.000 abstract 2
- 230000035882 stress Effects 0.000 description 6
- 230000030279 gene silencing Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Abstract
The utility model discloses a silencer structure mainly comprising a perforated pipe, a sound absorbent, a traveler and an external air outlet pipe. The sound absorbent is laid outside the perforated pipe; the traveler connects the outlet end of the perforated pipe with the external air outlet pipe so as to make air flow smoothly pass through; and the traveler is in a retractable structure containing many small gaps, and the deformation of the perforated pipe is absorbed through the compression and expansion of the traveler. The utility model solves the problems of bending or breaking of the perforated pipe caused by no way to release stress due to the weak strength of the perforated pipe of the silencer internal structure on the premise of guaranteeing the elimination of high-frequency noises, thereby improving the durability of an exhaust system.
Description
Technical field
The utility model relates to a kind of silencing apparatus, particularly relates to the internal structure that silencing apparatus is eliminated high-frequency noises.
Background technique
The general structure that exhaustion system for automobile is eliminated high-frequency noises is: silencer cylinder inside is pipe always, be equipped with a lot of apertures above it, such perforated pipe lays sound-absorbing materials such as glass fibre outward again, air communication is crossed these intensive apertures and is entered sound-absorbing material, thereby reaches the effect of eliminating high-frequency noises.But because the part that spiles on these pipes causes the intensity of this part that tangible reduction is arranged than comparatively dense.On the one hand because silencing apparatus itself accepts to come from many-sided vibration transfer such as motor and vehicle body, and disconnected coupling element such as bellows can not cut off this vibrations fully, still there are the vibration and the corresponding Stress Transfer of small part to arrive the interior site of perforation of silencer cylinder, on the other hand, because silencing apparatus itself is to be in the hot alternation state that a temperature constantly changes, the appearance that the phenomenon of expanding with heat and contract with cold is frequent, the thermal stress of Chan Shenging can be assembled thereupon, the length of pipe is also in continuous variation, and this phenomenon is present on the perforated pipe always.Yet because the site of perforation strength ratio is relatively poor, become the vulnerable area of whole perforated pipe, under the reciprocal effect of this stress and distortion, stress can't discharge, and distortion can't absorb, and just may produce bending deflection even phenomenon of rupture in site of perforation.
Summary of the invention
The utility model purpose is: when guaranteeing the elimination of exhaust high-frequency noises, guarantee the durability of exhaust silencer.
Acoustic wave filter structure of the present utility model mainly comprises perforated pipe, sound-absorbing material, steel traveler and outside steam outlet pipe, and sound-absorbing material is laid in outside the perforated pipe, and steel traveler couples together the outlet end and the outside steam outlet pipe of perforated pipe, makes the air-flow can smooth-going passing through.Wherein steel traveler is one to comprise a lot of areolate Collapsible structures, steel traveler is made by the stainless steel material of corrosion-and high-temp-resistant, steel wire makes to intersect between each steel wire by technology and twines, but there is certain clearance between the steel wire, have a certain amount of compression and stretch function, because steel traveler has certain density, and the internal diameter of steel traveler is suitable with the perforated pipe internal diameter, air communication is crossed the steel traveler place very big air-flow diffusion can not occur, so air-flow can smooth-going passing through.And because each steel wire of steel traveler is to intersect to twine, there is certain interval, perforated pipe produces certain displacement owing to expand with heat and contract with cold, and can remedy these change in displacement by the gap length between the steel traveler steel wire, still is equivalent to by an integral body and air communication is out-of-date.And owing to perforated pipe still has perforation structure and lays sound-absorbing material, so original high frequency noise elimination effect does not change.
Acoustic wave filter structure of the present utility model and existing acoustic wave filter structure maximum different are the outlet side of the perforated pipe of silencing apparatus inside is disconnected, and at perforated pipe that disconnects and the gap filler wires circle between the outside steam outlet pipe, because steel traveler is one to comprise a lot of areolate Collapsible structures, can absorb the stress that comes from motor and the generation of hot alternation fully, can absorb simultaneously the distortion of expanding with heat and contract with cold and producing, thereby guarantee the durability of exhaust silencer.
Description of drawings
Fig. 1: the utility model acoustic wave filter structure schematic representation.
Description of reference numerals:
The 1-perforated pipe; The 2-sound-absorbing material; The 3-steel traveler; The outside steam outlet pipe of 4-.
Embodiment
The embodiment who provides below in conjunction with accompanying drawing describes in further detail the utility model acoustic wave filter structure.
With reference to Fig. 1, acoustic wave filter structure mainly is made of sound-absorbing material 2, steel traveler 3 and outside steam outlet pipe 4 several sections of the perforated pipe in the silencer cylinder 1, absorption medium-high frequency.Steel traveler 3 couples together the section and the outside steam outlet pipe 4 of perforated pipe 1 outlet end, because the internal diameter of steel traveler and perforated pipe are quite and have certain density, so smooth-going passing through of air-flow energy, the distortion that stress on the perforated pipe 1 and hot alternation produce discharges by the breaking part of perforated pipe 1, amount of deformation absorbs by the compression and the expansion of steel traveler 3, the stress that can produce because of thermal expansion because of the pipe of perforation can't not discharge and produce the phenomenon that perforated pipe is crooked even rupture, thereby guaranteed the durability of perforated pipe 1, simultaneously owing to still be laid with sound-absorbing material 2, so still can guarantee to the high-frequency noises effect of well eliminating the noise in site of perforation.
Claims (5)
1, a kind of acoustic wave filter structure, comprise perforated pipe (1), sound-absorbing material (2), steel traveler (3) and outside steam outlet pipe (4), sound-absorbing material (2) is laid in outside the perforated pipe (1), it is characterized in that: steel traveler (3) couples together the outlet end and the outside steam outlet pipe (4) of perforated pipe (1), makes smooth-going the passing through of air-flow energy.
2, acoustic wave filter structure as claimed in claim 1 is characterized in that: steel traveler (3) is one to comprise a lot of areolate Collapsible structures, and the steel traveler material is by the compression of steel traveler (3) and the amount of deformation of expansion absorption perforated pipe (1).
3, acoustic wave filter structure as claimed in claim 1 or 2 is characterized in that: steel traveler (3) is made by the stainless steel material of corrosion-and high-temp-resistant, intersects between each steel wire and twines.
4, acoustic wave filter structure as claimed in claim 3 is characterized in that: the internal diameter of the internal diameter of steel traveler (3) and perforated pipe (1) is suitable.
5, acoustic wave filter structure as claimed in claim 4 is characterized in that: sound-absorbing material (2) is the medium-high frequency sound-absorbing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201763132U CN201284682Y (en) | 2008-10-17 | 2008-10-17 | Silencer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201763132U CN201284682Y (en) | 2008-10-17 | 2008-10-17 | Silencer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201284682Y true CN201284682Y (en) | 2009-08-05 |
Family
ID=40949667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201763132U Expired - Lifetime CN201284682Y (en) | 2008-10-17 | 2008-10-17 | Silencer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201284682Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011628A (en) * | 2010-12-30 | 2011-04-13 | 柳州五菱汽车有限责任公司 | Car silencer and barrel thereof |
| CN105518269A (en) * | 2013-09-17 | 2016-04-20 | 丰田自动车株式会社 | Wound muffler manufacturing method and wound muffler |
| CN107972535A (en) * | 2016-10-21 | 2018-05-01 | 福特全球技术公司 | The system and method that variable acoustic suppresses in adjustable seat |
| CN110701418A (en) * | 2019-10-09 | 2020-01-17 | 中国船舶重工集团公司第七0五研究所 | Impedance composite pressure pulsation attenuator with length direction constraint |
-
2008
- 2008-10-17 CN CNU2008201763132U patent/CN201284682Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011628A (en) * | 2010-12-30 | 2011-04-13 | 柳州五菱汽车有限责任公司 | Car silencer and barrel thereof |
| CN102011628B (en) * | 2010-12-30 | 2012-09-26 | 柳州五菱汽车有限责任公司 | Car silencer and barrel thereof |
| CN105518269A (en) * | 2013-09-17 | 2016-04-20 | 丰田自动车株式会社 | Wound muffler manufacturing method and wound muffler |
| CN107972535A (en) * | 2016-10-21 | 2018-05-01 | 福特全球技术公司 | The system and method that variable acoustic suppresses in adjustable seat |
| CN110701418A (en) * | 2019-10-09 | 2020-01-17 | 中国船舶重工集团公司第七0五研究所 | Impedance composite pressure pulsation attenuator with length direction constraint |
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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: 20090805 |
|
| CX01 | Expiry of patent term |