CN201087733Y

CN201087733Y - Automobile exhaustion silencer

Info

Publication number: CN201087733Y
Application number: CNU2007200384929U
Authority: CN
Inventors: 倪强; 柯儒池; 明光跃; 葛亮; 刘艳武
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2007-06-30
Filing date: 2007-06-30
Publication date: 2008-07-16
Anticipated expiration: 2017-06-30

Abstract

The utility model relates to an exhaust muffler which is applied in the field of automobile engine, and comprises a muffler shell body (1), empty cavities (2), an outlet pipe (3), a clapboard (4), an inlet pipe (5), an inner pipe (6) and a diffusing pipe (7). The clapboard (4) is connected with the muffler shell body (1). So the empty cavities (2) with different volumes are formed in the inner part of the muffler shell body (1). The clapboard (4) is provided with a punched hole. The inlet pipe (5) and the outlet pipe (3) are fixed via the punched hole. The inlet pipe (5) and the outlet pipe (3) respectively pass through the muffler shell body (1), and the inner pipe (6) is connected with the inlet pipe (5). The diffusing pipe (7) with a pipe socket type structure is arranged on the outlet pipe (3). The structure of the utility model can furthest collect and blow out the water steam from the inner part of the exhaust muffler before the water steam is condensed. The aggregation of the acid water can be avoided in the inner part of the exhaust muffler, thereby increasing the service life of the exhaust muffler.

Description

A kind of automobile exhaust muffler

Technical field

The utility model relates to the motor car engine field, relates to a kind of automobile exhaust muffler specifically.

Background technique

Exhaust silencer is the vitals in motor car engine field.Existing automobile exhaust muffler often is made up of one-level or two-stage silencing apparatus, the main muffler of one-level silencing apparatus or secondary muffler generally is made up of housing, cavity, outer pipe, the dividing plate that is provided with the inlet tube of perforation and is provided with perforation, and its hollow cavity generally mostly is three chambeies.The outer pipe of existing automobile exhaust muffler is cylindric, and the exhaust entrance end does not have obvious variation.Such structure is unfavorable for the expansion and the collection of gas.And when silencing apparatus is installed in automobile tail, because the silencing apparatus temperature is lower, the water vapour that exhaust produced can not be eliminated well, these steam coagulations are to accumulate over a long period in main muffler behind the water, because these water are acid, long-term accumulation makes the suppressor case content be vulnerable to corrosion, thereby reduces the working life of silencing apparatus.

The model utility content

The utility model provides a kind of automobile exhaust muffler, the technical problem that solves is: the structure of existing automobile exhaust muffler is unfavorable for the expansion and the collection of gas, make that steam coagulation is in the medium-term and long-term accumulation of silencing apparatus behind the water, cause suppressor case to corrode easily, thereby reduce the working life of silencing apparatus.

In order to address the above problem, the utility model adopts following technological scheme:

The diffuser pipe of reducing is set on the outer pipe of exhaust silencer.

Diffuser pipe on the described outer pipe is the bell mouth shape structure.

Described diffuser pipe is positioned at the exhaust gas intake port end of outer pipe.

Described diffuser pipe is a stainless steel material.

Exhaust enters from inlet tube, through after the guiding of interior pipe again the diffuser pipe from the bell mouth shape of outlet pipe end pass through, discharge from outer pipe then.

The caliber at rear portion is less because the caliber of the exhaust gas intake port end of outer pipe is big, when especially the diffuser pipe of outer pipe front end is bell mouth shape, this sectional area cataclysm makes outer pipe front end and outlet end produce bigger pressure reduction, thereby the water vapour of exhaust silencer cylinder inside can be collected to greatest extent before condensation and blown out, and utilize the air-flow that this bigger pressure reduction can be rapider under situation about whole outer pipe diameter not being increased, effective collection is eliminated the noise through dividing plate, make it to discharge from the outer pipe afterbody.

The utility model adopts technique scheme, the water vapour of exhaust silencer inside can be collected to greatest extent before condensation and is blown out, and has avoided the assembly of acid water in silencing apparatus inside, the working life of having improved exhaust silencer.

Description of drawings

Below expressed content of the utility model accompanying drawing and the mark among the figure are made brief description:

Fig. 1 is the internal structure schematic representation of a kind of automobile exhaust muffler of the utility model;

Be labeled as among the figure:

1, suppressor case; 2, cavity; 3, outer pipe; 4, dividing plate; 5, inlet tube; 6, interior pipe; 7, diffuser pipe.

Embodiment

Below in conjunction with accompanying drawing 1,, embodiment of the present utility model is described in further detail by description to embodiment:

As shown in Figure 1, a kind of automobile exhaust muffler that is installed in automobile tail comprises: suppressor case 1, cavity 2, outer pipe 3, dividing plate 4, inlet tube 5, interior pipe 6 and diffuser pipe 7.Three dividing plates 4 are connected with suppressor case 1 respectively, thereby form four cavitys 2 that volume does not wait in suppressor case 1 inside, be respectively equipped with perforation on three dividing plates 4, inlet tube 5, interior pipe 6 and outer pipe 3 are fixing by perforation, inlet tube 5, outer pipe 3 be break-through suppressor case 1 respectively, and the interior pipe 6 with the effect of air guide stream is connected with inlet tube 5.

The diffuser pipe 7 of bell mouth shape structure is set at the exhaust gas intake port end of outer pipe 3.

Diffuser pipe 7 welds together with the outer pipe 3 of exhaust gas intake port end.

Diffuser pipe 7 is a stainless steel material.

Exhaust enters from inlet tube 5, through after the guiding of interior pipe 6 again the diffuser pipe 7 from the bell mouth shape of outer pipe 3 front ends pass through, discharge from outer pipe 3 then.

After exhaust enters suppressor case 1 inside by inlet tube 5, when lower the and water vapour that produce of suppressor case 1 inside temperature can not well be eliminated, because diffuser pipe 7 and its rear portion sectional area cataclysm of the exhaust gas intake port end of outer pipe 3, form bigger atm difference, thereby can before water vapor condensation, collect and blow out it to greatest extent, avoided the assembly of acid water in exhaust silencer inside, thus the working life of having improved exhaust silencer.

The utility model is not limited to said structure, all belongs to protection domain of the present utility model to the shape of diffuser pipe 7, material and with the change of the Placement of outer pipe 3.

Claims

1. automobile exhaust muffler, comprise suppressor case (1), cavity (2), outer pipe (3), dividing plate (4), inlet tube (5), interior pipe (6), and diffuser pipe (7), dividing plate (4) is connected with suppressor case (1), thereby form the cavity (2) that volume does not wait in suppressor case (1) inside, dividing plate (4) is provided with perforation, inlet tube (5), outer pipe (3) is fixing by perforation, inlet tube (5), outer pipe (3) is break-through suppressor case (1) respectively, interior pipe (6) connects with inlet tube (5), it is characterized in that: the diffuser pipe (7) that reducing is set on outer pipe (3).

2. a kind of automobile exhaust muffler according to claim 1 is characterized in that: the diffuser pipe (7) on the outer pipe (3) is the bell mouth shape structure.

3. a kind of automobile exhaust muffler according to claim 1 is characterized in that: diffuser pipe (7) is positioned at the exhaust gas intake port end of outer pipe (3).

4. a kind of automobile exhaust muffler according to claim 1 is characterized in that: diffuser pipe (7) is a stainless steel material.