CN205654398U - A muffler of making an uproar falls for car exhaust system - Google Patents

Abstract

The utility model mainly discloses a muffler of making an uproar falls for car exhaust system, its technical scheme: including air intake part, the portion of giving vent to anger, muffler main part, the first baffle that lies in the muffler main part, second baffle and first breather pipe and second breather pipe, all be equipped with the filter screen in air intake part and the portion of giving vent to anger, be equipped with the acoustic celotex board of giving vent to anger between third cavity and the portion of giving vent to anger, first cavity, second cavity and third cavity are separated into with the second baffle with the muffler main part to first baffle, gas from first breather pipe entering, then enter into first cavity, second cavity and third cavity in proper order, follow the second breather pipe at last and go out, all be equipped with the sound absorbing layer on the inner wall of first cavity, second cavity and third cavity, the surface of first baffle and second baffle all is equipped with syllable -dividing bump. The utility model discloses can filter the automobile exhaust gas, reduce harmful gas, through bump and the sound absorbing layer noise absorbing of giving sound insulation, effectively eliminate the low frequency noise's of automobile exhaust production advantage.

Description

A kind of noise reducing muffle for automobile exhaust system

Technical field

This utility model relates to automobile technical field, a kind of noise-reduction for automobile exhaust system Device.

Background technology

In prior art, automobile becomes people and goes on a journey the conventional vehicles, along with carrying of people's living standard Height, the automobile on road gets more and more, and automotive performance is more and more senior.Automobile is the most usually There will be the various noise making people irritated, the noise source of automobile has multiple, such as electromotor, variator, drives Dynamic bridge, power transmission shaft, compartment, windowpane, tire, relay, loudspeaker, sound equipment etc. all can produce noise, These noises are passive generation a bit, and some is actively (as artificially pressed loudspeaker) to occur, and for chasing after For asking perfect people, the noise that automobile produces is the most intolerable, carries to driver and passenger inside the vehicle Carry out puzzlement necessarily.Automobile noise is essentially from automobile exhaust noise, and the size of automobile noise is to weigh vapour The important indicator of car quality level, therefore, the preventing and treating of automobile noise is an important class of World Auto Industry Topic.

And sound transmission can be hindered by automotive muffler and allow that air-flow passes through, preventing and treating air flow power make an uproar The special equipment of sound.The current environment noise caused for suppression high pressure draught discharge, has had multiple the most The acoustic filter of pattern, uses impedance composite noise-cancelling theory mostly, and owing to structure is complicated, weight is big, high Temperature oxidation sound absorption filler, high velocity air impacts the reasons such as sound absorption filler, aqueous vapor infiltration sound absorption filler, causes and disappear The maintenance of sound device frequently, soundproof effect poor, the situations such as the use cycle is short, are always the masters that face of mobile muffler Want problem.

Utility model content

The deficiency existed for prior art, this utility model provides a kind of noise reduction for automobile exhaust system Deafener, waste gas filters, and reduces harmful gas, absorbs noise by sound insulation salient point and sound absorbing layer, has Effect eliminates the low frequency noise that automobile exhaust produces, and brings driver and the quiet environment of passenger in car.

In order to achieve the above object, this utility model is achieved through the following technical solutions: a kind of for automobile The noise reducing muffle of gas extraction system, including intake section, portion of giving vent to anger, muffler body, is positioned at muffler body First breather of interior the first dividing plate, second partition and interlaced setting and the second breather, described It is equipped with drainage screen in intake section and portion of giving vent to anger, between described intake section and the first chamber, is provided with air inlet baffle, Described 3rd chamber and give vent to anger and be provided with baffle of giving vent to anger between portion, described first dividing plate and second partition are along disappearing The cross-wise direction of sound device main body is arranged, and muffler body is separated into the first chamber, the second chamber and the 3rd Chamber, one end of described first breather is positioned at intake section, and the other end of described first breather stretches into first In chamber and entering in the second chamber through the first dividing plate, one end of described second breather is positioned at the portion of giving vent to anger In, the other end of described second breather stretches into the 3rd chamber and enters in the second chamber through second partition, Be equipped with sound absorbing layer on the inwall of described first chamber, the second chamber and the 3rd chamber, described first dividing plate and The outer surface of second partition is equipped with sound insulation salient point.

This utility model is further arranged to: the inner side of described sound absorbing layer is uniformly provided with trapezoidal projection, described ladder It is coated with catalyst on shape projection.By the activity of the harmful substance in catalyst gas, it is promoted to enter Three kinds of harmful gass are become innocuous gas, make vehicle exhaust be able to by the oxidation-reduction chemical reaction that row is certain Purify, reduce the discharge of poisonous object, reduce the vehicle exhaust pollution to environment.Set by trapezoidal projection Put catalyst, increase catalyst and the time of contact of gas and contact area so that it is be fully contacted, react, Reduce the harmful substance in air-flow.

This utility model is further arranged to: be coated with heat shield outside described muffler body, described heat insulation Cover is provided with louvre.There is heat insulation protective action, prevent operator to be burned, heat is passed through simultaneously Louvre uniformly distributes, and accelerates radiating rate.

This utility model is further arranged to: described in the give vent to anger afterbody in portion be provided with water storage tank, described water storage tank with The portion of giving vent to anger removably connects.Collect, by water storage tank, the moisture that the portion of giving vent to anger produces, and facilitate water storage tank from going out Gas portion disassembles the moisture toppling over accumulation.

This utility model has and has the beneficial effect that

Drainage screen is set at intake section, first the waste gas entering muffler body is filtered, reduce harmful Gas；Drainage screen is set in the portion of giving vent to anger, effectively prevents the pollutant such as extraneous dust storm from pouring in down a chimney to disappearing from the portion of giving vent to anger Sound device main body, thus cause the gas extraction system even damage of electromotor.By air inlet baffle and give vent to anger every Soundboard intercepts sound, improves fall sound effective value；Muffler body is separated into by described first dividing plate and second partition First chamber, the second chamber and the 3rd chamber, gas enters from the first breather, then sequentially enters One chamber, the second chamber and the 3rd chamber, finally go out from the second breather, it is achieved air-flow fills with chamber Shunting is logical, and the expansion being realized energy and sound by aperture and big chamber is decayed and shrinks decay；By The sound insulation salient point arranged on one dividing plate and second partition, makes the first dividing plate and second partition surface irregularity, Air-flow is equal and baffle contacts in the first chamber, the second chamber and the 3rd chamber, through too much on sound insulation salient point Secondary reflection, refraction, add the air-flow time in chamber, eliminates the impact and sound wave carried secretly in air-flow, Reduce noise, prevent echo.By being equipped with on the inwall of the first chamber, the second chamber and the 3rd chamber Sound absorbing layer, absorbs the sound carried in gas further, reduces simultaneously, avoids gas shock deafener master The grating in internal portion and strike note, buffer gas flow.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Reference: 1, intake section；11, air inlet baffle；2, give vent to anger portion；21, give vent to anger baffle； 22, water storage tank；3, muffler body；4, the first dividing plate；41, the first chamber；42, the second chamber； 43, the 3rd chamber；5, second partition；6, the first breather；7, the second breather；81, sound absorbing layer； 82, trapezoidal projection；83, catalyst；84, sound insulation salient point；85, drainage screen；86, heat shield；87、 Louvre.

Detailed description of the invention

In conjunction with accompanying drawing, this utility model preferred embodiment is described in further details.

A kind of noise reducing muffle for automobile exhaust system as described in Figure 1, including intake section 1, portion of giving vent to anger 2, muffler body 3, be positioned at the first dividing plate 4 of muffler body 3, second partition 5 and mutually hand over Wrong the first breather 6 and the second breather 7 arranged；It is equipped with filtration in described intake section 1 and portion 2 of giving vent to anger Net 85, is provided with air inlet baffle 11, described 3rd chamber 43 between described intake section 1 and the first chamber 41 And give vent to anger and between portion 2, be provided with baffle 21 of giving vent to anger.Drainage screen 85 is set at intake section 1, first entrance is disappeared The waste gas of sound device main body 3 filters, and reduces harmful gas；Drainage screen 85 is set in the portion of giving vent to anger 2, effectively Prevent the pollutant such as extraneous dust storm from pouring in down a chimney from the portion of giving vent to anger 2 to muffler body 3, thus cause gas extraction system The even damage of electromotor.

Described first dividing plate 4 and second partition 5 are arranged along the cross-wise direction of muffler body 3, and will disappear Sound device main body 3 is separated into the first chamber the 41, second chamber 42 and the 3rd chamber 43.Described first breather 6 One end be positioned at intake section 1, in the other end of described first breather 6 stretches into the first chamber 41 and pass the One dividing plate 4 enters in the second chamber 42, and one end of described second breather 7 is positioned at the portion of giving vent to anger 2, institute The other end stating the second breather 7 stretches into the 3rd chamber 43 and enters into the second chamber 42 through second partition 5 In；Gas enters from the first breather 6, then sequentially enters first chamber the 41, second chamber 42 and Three chambers 43, finally go out from the second breather 7, it is achieved air-flow and the abundant circulation of chamber, pass through aperture Realize the expansion decay of energy and sound with big chamber and shrink decay.

It is equipped with sound absorbing layer 81 on the inwall of described first chamber the 41, second chamber 42 and the 3rd chamber 43, Reducing the noise of aerofluxus further, soundproof effect is good, reduces simultaneously and avoids gas shock in muffler body 3 Internal grating and strike note, buffer gas flow.The inner side of described sound absorbing layer 81 is uniformly provided with trapezoidal projection 82, It is coated with catalyst 83 on described trapezoidal projection 82.It is catalyzed the work of harmful substance in gas by catalyst 83 Property, promote it to carry out certain oxidation-reduction chemical reaction, harmful gas is become innocuous gas, make automobile Tail gas is purified, and reduces the discharge of poisonous object, reduces the vehicle exhaust pollution to environment.By trapezoidal Projection 82 arranges catalyst 83 so that catalyst 83 surface undulation is uneven, increases catalyst 83 and gas Time of contact and contact area so that it is be fully contacted, react, reduce the harmful substance in gas.Described The outer surface of the first dividing plate 4 and second partition 5 is equipped with sound insulation salient point 84, make the first dividing plate 4 and second every Plate 5 surface irregularity, air-flow in first chamber the 41, second chamber 42 and the 3rd chamber 43 with first Dividing plate 4 contacts with second partition 5, through multiple reflections, refraction on sound insulation salient point 84, adds air-flow Time in chamber, eliminate the impact and sound wave carried secretly in air-flow, reduce noise, prevent echo.Institute Stating and be coated with heat shield 86 outside muffler body 3, described heat shield 86 is provided with louvre 87, described Heat shield 86 has heat insulation protective action, prevents operator to be burned, simultaneously by heat by louvre 87 Uniformly distribute, accelerate radiating rate.This utility model is provided with multiple chamber and breather, and utilization is many Air-flow is carried out noise reduction by level noise-reducing structure layer by layer, effectively eliminates the low frequency noise that automobile exhaust produces, brings car Interior driver and the quiet environment of passenger, it is provided that preferably automobile is enjoyed.

Described air inlet baffle 11 and baffle 21 of giving vent to anger intercept sound, improve fall sound effective value, make vehicle occupant Member and extraneous personnel cannot hear the sound that aerofluxus sends, it is provided that more comfortable automobile is enjoyed.Described portion 2 of giving vent to anger Afterbody be provided with water storage tank 22, described water storage tank 22 removably connects with the portion of giving vent to anger 2.By water storage tank 22 Collect the moisture that portion 2 of giving vent to anger produces, and convenient being disassembled from the portion of giving vent to anger 2 by water storage tank 22 topples over accumulation Moisture.

Above-described embodiment is only used for illustrating inventive concept of the present utility model, rather than weighs this utility model The restriction of profit protection, all changes utilizing this design that this utility model carries out unsubstantiality, all should be fallen into this The protection domain of utility model.

Claims (4)

1. null1. the noise reducing muffle for automobile exhaust system，It is characterized in that: include intake section (1)、Give vent to anger portion (2)、Muffler body (3)、It is positioned at first dividing plate (4) of muffler body (3)、First breather (6) of second partition (5) and interlaced setting and the second breather (7)，It is equipped with drainage screen (85) in described intake section (1) and portion of giving vent to anger (2)，Air inlet baffle (11) it is provided with between described intake section (1) and the first chamber (41)，It is provided with baffle of giving vent to anger (21) between 3rd chamber (43) and portion of giving vent to anger (2)，Described first dividing plate (4) and second partition (5) are arranged along the cross-wise direction of muffler body (3)，And muffler body (3) is separated into the first chamber (41)、Second chamber (42) and the 3rd chamber (43)，One end of described first breather (6) is positioned at intake section (1)，In in the other end of described first breather (6) stretches into the first chamber (41) and entering into the second chamber (42) through the first dividing plate (4)，One end of described second breather (7) is positioned at the portion of giving vent to anger (2)，In the other end of described second breather (7) stretches into the 3rd chamber (43) and enters into the second chamber (42) through second partition (5)，Described first chamber (41)、It is equipped with sound absorbing layer (81) on the inwall of the second chamber (42) and the 3rd chamber (43)，The outer surface of described first dividing plate (4) and second partition (5) is equipped with sound insulation salient point (84).
2. A kind of noise reducing muffle for automobile exhaust system the most according to claim 1, it is characterized in that: the inner side of described sound absorbing layer (81) is uniformly provided with trapezoidal projection (82), and described trapezoidal projection (82) is coated with catalyst (83).
3. A kind of noise reducing muffle for automobile exhaust system the most according to claim 1, it is characterized in that: described muffler body (3) outside is coated with heat shield (86), and described heat shield (86) is provided with louvre (87).
4. A kind of noise reducing muffle for automobile exhaust system the most according to claim 1, it is characterized in that: described in the give vent to anger afterbody in portion (2) be provided with water storage tank (22), described water storage tank (22) removably connects with the portion of giving vent to anger (2).