CN2665367Y - Silencing apparatus for car exhaust gas purifier - Google Patents
Silencing apparatus for car exhaust gas purifier Download PDFInfo
- Publication number
- CN2665367Y CN2665367Y CNU2003201253495U CN200320125349U CN2665367Y CN 2665367 Y CN2665367 Y CN 2665367Y CN U2003201253495 U CNU2003201253495 U CN U2003201253495U CN 200320125349 U CN200320125349 U CN 200320125349U CN 2665367 Y CN2665367 Y CN 2665367Y
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- CN
- China
- Prior art keywords
- metal material
- exhaust gas
- automobile exhaust
- gas purifying
- silencing apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
本实用新型涉及一种汽车排气净化消声器，包括金属外壳，外壳的两端分别与进气管和出气管相连接，外壳内装有净化消声材料，净化消声材料由发泡金属材料构成，发泡微孔的孔径为50－1200微米，孔隙率为80－98％，该发泡金属材料表面附着有催化剂涂层。这种排气消声器结构简单、加工简便、成本低廉，能耐高温、耐腐蚀、耐气流冲击，使用寿命长。
The utility model relates to an automobile exhaust purification muffler, which comprises a metal shell, the two ends of the shell are respectively connected with an air intake pipe and an air outlet pipe, and the shell is equipped with a purifying and muffler material, which is made of foamed metal material. The pore diameter of the foam micropore is 50-1200 microns, and the porosity is 80-98%. The surface of the foamed metal material is attached with a catalyst coating. The exhaust muffler has the advantages of simple structure, convenient processing, low cost, high temperature resistance, corrosion resistance, air flow impact resistance and long service life.
Description
[technical field]
The utility model relates to a kind of automobile exhaust gas purifying silencing apparatus, relates to a kind of automobile exhaust gas purifying silencing apparatus that adopts foaming metal as muffler material and catalyst carrier material in particular.
[background technique]
The seriousness of the environmental pollution that tail gas and exhaust sound caused of motor is well-known.To the control of the external purification and the exhaust sound of automobile exhaust, normally adopt independent of each other minute body structure of purifier and silencing apparatus, body structure not only caused engine power loss to increase in this minute, also can increase installation fee and cost of production.
In existing automobile exhaust purifier, catalyst carrier material is pottery and metal two classes.Compare shortcoming such as at present general honeycomb ceramic carrier exists temperature lower (1400 ℃ softening), element wall is thicker, preheating is slow, exhaust resistance is bigger with metallic carrier.Therefore, each state is all in the exploitation of carrying out metallic carrier.The metallic carrier wall thickness only is 1/4 of a ceramic monolith, thereby can reduce exhaust resistance.And make the catalyst carrier miniaturization become possibility; The thermal capacity of metallic carrier is little, and its pre-thermal characteristics is good, helps the enforcement that the electric preheating catalyzer is realized the zero-emission measure of HC, also has advantages such as thermal adaptability is good in addition.And the various structures that the metallic carrier of catalyzer is combined into based on the wavy metal net in the present Exhaust Gas Catalytic Converter for Automobiles, its heat shock resistance and mechanical shock performance are lower, oxidation resistance deficiency during high temperature has particularly influenced Exhaust Gas Catalytic Converter for Automobiles working life.In addition, the metallic carrier that this ripple is netted, its specific surface area is limited, and adsoption catalyst active component scarce capacity has limited the further raising of Exhaust Gas Catalytic Converter for Automobiles purification efficiency.
Existing automobile exhaust muffler system is usually based on reactive muffler, and is simple in structure because it is an all metal construction, can be high temperature resistant, corrosion-resistant, gasproof stream impacts, and the life-span is long.But the noise elimination frequency band of reactive muffler is narrower, in, low frequency noise elimination effect is better, high frequency is relatively poor.In order to remedy the defective of its high frequency noise elimination weak effect, often to need to adopt multistage combination be multistage silencing apparatus or impedance complex formula silencing apparatus etc. to high frequency noise elimination effect structure preferably, finishes the noise elimination of automobile exhaust system.Increase difficulty of processing so on the one hand, also improved the noise elimination cost on the other hand.
Existing sound-absorbing material generally adopts high temperature resistant, the corrosion resistant aluminium wire felt of energy, asbestos rope felt etc., is fixed with the pavement structure that can firmly be fixed again.This silencing apparatus is anti-to be washed away, humidity and dust-fast effect are relatively poor, and working life is shorter, and the effect of eliminating the noise simultaneously is also relatively poor, therefore also fails at present generally to be used at automotive field.
[model utility content]
The utility model provides that a kind of energy is high temperature resistant, corrosion-resistant, gasproof stream impacts, and long service life hands over cleaning of off-gas performance and acoustic attenuation performance good, simple in structure simultaneously, the easy integrated car exhaust purging muffler of processing.
The utility model comprises metal shell, the two ends of shell are connected with steam outlet pipe with suction tude respectively, be equipped with in the shell and purify and the noise elimination device, described device heart porous material is a carrier, this carrier to small part is the foaming metal material, the aperture of the foaming micropore of foaming metal material is the 50-1200 micron, and the porosity ratio of the foaming metal material ratio of material total volume (volume of air of porous material with) is 80-98%, and the foaming metal material surface is attached with catalyst coat.
Described foaming metal material can be provided with along the direction segmentation vertical with airflow direction, leaves cavity between section and the section.The foaming metal material also can be in the single or multiple lift mode with the direction setting parallel with airflow direction, between each foaming metal material layer and and outer casing inner wall between leave cavity.The thickness of described foaming metal material is the 10-40 millimeter, and the thickness of described cavity is the 10-50 millimeter.
Described foaming metal material comprises nickel, iron, copper, aluminium, titanium and the alloy thereof of the shape that foams.
Described catalyst coat component comprises metallic element, rare earth metal and small amount of precious metals, and wherein metallic element comprises one or more among calcium Ca, barium Ba, magnesium Mg, zirconium Zr, zinc Zn, the aluminium Al; Rare earth metal comprises one or more among cerium Ce, lanthanum La, praseodymium Pr, the neodymium Nu; Precious metal comprises one or more among palladium Pb, platinum Pt, rhodium Rh, the ruthenium Ru.
Also can add in gama-alumina, zirconium oxide, the cerium oxide one or more in the described catalyst coat component.
The utility model is simple in structure, process easy, long service life.In wider frequency, all has good acoustic attenuation performance; And heat shock resistance and mechanical shock, specific surface area is big, the purification efficiency height.
[description of drawings]
Fig. 1 is the structural representation of first kind of mode of execution of the utility model automobile exhaust gas purifying silencing apparatus;
Fig. 2 is the structural representation of second kind of mode of execution of the utility model automobile exhaust gas purifying silencing apparatus;
Fig. 3 is that the A of Fig. 2 is to view;
Fig. 4 is the structural representation of the third mode of execution of the utility model automobile exhaust gas purifying silencing apparatus;
Fig. 5 is the structural representation of the 4th kind of mode of execution of the utility model automobile exhaust gas purifying silencing apparatus;
In conjunction with example the utility model is described in further detail with reference to the accompanying drawings:
[embodiment]
[embodiment one]
As shown in Figure 1, comprise metal shell 2, the two ends of shell 2 are connected with steam outlet pipe 4 with suction tude 2 respectively (can establish clamp flange on suction tude and the steam outlet pipe, figure does not show), and foaming metal material 3 is housed in the shell 2.The porosity ratio of foaming metal material can be between 80-98%, and the aperture can be between the 50-1200 micron, and the foaming metal material surface is attached with catalyst coat.Sound-absorbing material 3 segmentations (among the figure be two sections, can be divided into multistage in actual use) are arranged in the metal shell 2 along the direction vertical with airflow direction, leave cavity between the sound-absorbing material 3 of segmentation setting.The thickness of foaming metal material can be between the 10-40 millimeter, and the thickness of cavity can be between the 10-50 millimeter.
Above-mentioned foaming metal material can comprise: elemental metals that nickel, iron, titanium are formed or the alloy that is made of above-mentioned metal.Also can be AB type alloy, wherein component A is a kind of in nickel, iron, the titanium, and its content accounts for 55-95% (weight percentage), and component B is one or more in chromium, aluminium, cobalt, molybdenum, the zinc, and its content accounts for 5-45% (weight percentage).
Catalyst coat component attached to the foaming metal surface comprises metallic element, rare earth metal and small amount of precious metals, and wherein metallic element comprises one or more among calcium Ca, barium Ba, magnesium Mg, zirconium Zr, zinc Zn, the aluminium Al; Rare earth metal comprises one or more among cerium Ce, lanthanum La, praseodymium Pr, the neodymium Nu; Precious metal comprises one or more among palladium Pb, platinum Pt, rhodium Rh, the ruthenium Ru.
Also can add in gama-alumina, zirconium oxide, the cerium oxide one or more in the described catalyst coat component.
Foaming metal material pore size is very big to the performance impact of whole tail gas clean-up, when the aperture was 50～1200 microns, changing effect was better, when the aperture is 400～800 microns, its changing effect optimum, foaming metal material pore size has very big influence to sound absorbing capabilities simultaneously.Its acoustic absorptivity rises earlier from low to high along with the increase in aperture presents one, and downward trend from high to low can obtain best acoustically effective in the time of between 200-1200 again.Simultaneously, the foaming metal material is better than low frequency part at the acoustically effective of HFS.
Because of a little, by leaving cavity between sound-absorbing material 3, and the mode that reasonably increases the thickness of material improves the sound absorbing capabilities of silencing apparatus, especially at the sound absorbing capabilities of low frequency part.Cavity objectively also can play the effect that increases material thickness, and this is equivalent to prolong effective length capillaceous, can reduce the consumption of material thus, has reduced cost.Can also improve simultaneously the sound absorbing capabilities of sound absorbing capabilities, the especially low frequency part of material.Studies have shown that, when the thickness of foaming metal material between the 10-40 millimeter, the thickness of cavity is between the 10-50 millimeter time, just can effectively improve acoustically effective, particularly the acoustically effective of low frequency part makes the utility model can both obtain good acoustically effective in the frequency range of a broadness.
The porosity ratio of foaming metal material also has bigger influence for specific surface area, purifying property, sound absorbing capabilities and the gas-flow resistance of material attached catalyst carrier, but, if the porosity ratio of material is brought up to 98% when above, not only also relatively difficult at present at technical elements, and it is uneconomical, and can influence the mechanical strength of material, reduce its erosion resistibility.Therefore the porosity ratio of foaming metal material being defined as 80-98% is a best scope.
[embodiment two]
As shown in Figures 2 and 3, the foaming metal material adopts along modes such as the direction parallel with airflow direction are provided with, also can form air-flow path between the centre of the sound-absorbing material 3 that the foaming metal material is made and sound-absorbing material 3 and metal shell 2.Like this, littler to the exhaust resistance of motor, but acoustically effective has decline slightly.So the quantity of the foaming metal material 3 that is provided with can be one deck or multilayer.Between each foaming metal material layer and and outer casing inner wall between leave cavity.The optimum thickness of foaming metal material is between the 10-40 millimeter, and the optimum thickness of cavity is between the 10-50 millimeter.
[embodiment three]
As shown in Figure 4, in metal shell 2, preceding half section is adopted foaming metal 3 as muffler material, and the second half section is adopted the metallic carrier of wavy metal net 5 as catalyzer, and all the other are identical with embodiment one.
[embodiment four]
As shown in Figure 5, in metal shell 2, adopt foaming metal 3 and the wavy metal tennis 5 section gap settings that are attached with catalyzer, every intersegmental interval 6 that is provided with, all the other are identical with embodiment one.
The various embodiments described above of employing the utility model tail-gas purifying silencer are used for general car and detect, and tail gas clean-up effect and elimination noiseproof feature all are better than state specified standards.
The foregoing description just embodies the preferred version of the utility model basic ideas; those skilled in the art to wherein some part some changes that may make all embodied principle of the present utility model, belong within the protection domain of the present utility model.
Claims (11)
1. automobile exhaust gas purifying silencing apparatus, comprise metal shell, the two ends of this shell are connected with steam outlet pipe with suction tude respectively, be equipped with in the described shell and purify and the noise elimination device, described device is carrier with the porous material, it is characterized in that: described carrier to small part is the foaming metal material, and the aperture of the foaming micropore of this foaming metal material is the 50-1200 micron, and porosity ratio is 80-98%.
2. automobile exhaust gas purifying silencing apparatus according to claim 1 is characterized in that: described foaming metal material is provided with along the direction segmentation vertical with airflow direction, leaves cavity between section and the section.
3. automobile exhaust gas purifying silencing apparatus according to claim 2 is characterized in that: the thickness of described foaming metal material is the 10-40 millimeter, and the thickness of described cavity is the 10-50 millimeter.
4. automobile exhaust gas purifying silencing apparatus according to claim 2 is characterized in that: the foaming metal material of each section can have different apertures or porosity ratio respectively.
5. automobile exhaust gas purifying silencing apparatus according to claim 1, it is characterized in that: described foaming metal material in the single or multiple lift mode with the direction setting parallel with airflow direction, between each foaming metal material layer and and outer casing inner wall between leave cavity.
6. automobile exhaust gas purifying silencing apparatus according to claim 5 is characterized in that: the thickness of described foaming metal material is the 10-40 millimeter, and the thickness of described cavity is the 10-50 millimeter.
7. automobile exhaust gas purifying silencing apparatus according to claim 1 is characterized in that: elemental metals or the alloy of described foaming metal material for being made up of nickel, iron, titanium.
8. automobile exhaust gas purifying silencing apparatus according to claim 1, it is characterized in that: described foaming metal material is an AB type alloy, wherein component A is a kind of in nickel, iron, the titanium, its content accounts for 55-95wt%, component B is one or more in chromium, aluminium, cobalt, molybdenum, the zinc, and its content accounts for 5-45wt%.
9. according to claim 1 or 7 or 8 described automobile exhaust gas purifying silencing apparatuss, it is characterized in that: described foaming metal material surface is attached with catalyst coat, and the component of this catalyst coat comprises metallic element, rare earth metal and small amount of precious metals.
10. according to claim 1 or 7 or 8 described automobile exhaust gas purifying silencing apparatuss, it is characterized in that: metallic element comprises one or more among calcium Ca, barium Ba, magnesium Mg, zirconium Zr, zinc Zn, the aluminium Al in the described catalyst coat; Rare earth metal comprises one or more among cerium Ce, lanthanum La, praseodymium Pr, the neodymium Nu; Precious metal comprises one or more among palladium Pb, platinum Pt, rhodium Rh, the ruthenium Ru.
11., it is characterized in that: also can add in gama-alumina, zirconium oxide, the cerium oxide one or more in the described catalyst coat according to claim 1 or 7 or 8 described automobile exhaust gas purifying silencing apparatuss.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201253495U CN2665367Y (en) | 2003-12-26 | 2003-12-26 | Silencing apparatus for car exhaust gas purifier |
| EP04728502A EP1616083B1 (en) | 2003-04-24 | 2004-04-21 | Muffler and catalytic converter devices |
| KR1020057020136A KR100659398B1 (en) | 2003-04-24 | 2004-04-21 | Muffler and catalytic converter devices |
| JP2006500460A JP2006526726A (en) | 2003-04-24 | 2004-04-21 | Muffler and catalytic converter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2003201253495U CN2665367Y (en) | 2003-12-26 | 2003-12-26 | Silencing apparatus for car exhaust gas purifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665367Y true CN2665367Y (en) | 2004-12-22 |
Family
ID=34349210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2003201253495U Expired - Lifetime CN2665367Y (en) | 2003-04-24 | 2003-12-26 | Silencing apparatus for car exhaust gas purifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665367Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731822A (en) * | 2016-11-28 | 2017-05-31 | 新奥泛能网络科技股份有限公司 | A kind of denitration noise elimination integration apparatus |
| CN111022166A (en) * | 2019-12-29 | 2020-04-17 | 广西辉煌朗洁环保科技有限公司 | A metal foam catalytic purification muffler for automobile engine |
-
2003
- 2003-12-26 CN CNU2003201253495U patent/CN2665367Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731822A (en) * | 2016-11-28 | 2017-05-31 | 新奥泛能网络科技股份有限公司 | A kind of denitration noise elimination integration apparatus |
| CN111022166A (en) * | 2019-12-29 | 2020-04-17 | 广西辉煌朗洁环保科技有限公司 | A metal foam catalytic purification muffler for automobile engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131226 Granted publication date: 20041222 |