CN1991138A

CN1991138A - Automobile sound absorber assembly

Info

Publication number: CN1991138A
Application number: CN 200510097334
Authority: CN
Inventors: 张庆义
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-31
Filing date: 2005-12-31
Publication date: 2007-07-04

Abstract

The invention discloses an automobile muffler assembly, comprising cavity, inlet pipe and outlet pipe. The cavity is set transversely. The inlet pipe of muffler is set in the middle of cavity and the outlet pipe is set at the end. The key point of cylinder shell of outlet pipe and a series of anechoic rooms in turn on the axial direction for eliminating pipe noise more effectively, especially the vortex noise, is that there is an anechoic core passing through each anechoic room on the axial direction; the outer ring of anechoic core is anechoic tube with micro hole, in which clapboards are set horizontally or vertically; anechoic ring with micro hole is set between anechoic core and shell. The exhaust muffler is provided with simple structure, convenience operation, low cost, high temperature resistance, corrosion resistance, long service life and better anechoic performance.

Description

A kind of automobile sound absorber assembly

Technical field

The present invention relates to field of automobile, more specifically to a kind of automobile sound absorber assembly.

Background technique

Assemblies such as the vent systems of existing automobile is managed before comprising exhaust, back pipe, purifier, silencing apparatus are formed.Mostly automotive muffler is to adopt the silencing apparatus of lateral arrangement can only make outlet pipe satisfy the turnover gas requirement of silencing apparatus by the form that adds bend pipe from its two ends turnover gas to part at present.But the exhaust silencer of said structure, exhaust sound are difficult to control by the time, and have increased manufacture cost.

Summary of the invention

Technical problem to be solved by this invention provides a kind of exhaust silencer that can effectively control exhaust sound.

For achieving the above object, the technical solution used in the present invention is:

A kind of automobile sound absorber assembly, comprise cavity, suction tude, outlet pipe, the cavity lateral arrangement, the suction tude of silencing apparatus is located at the middle part of silencing apparatus cavity, outlet pipe is located at the end of silencing apparatus cavity, the tube inside and outside shell of outlet pipe and a series of anechoic rooms of arranging successively vertically have one from axially running through the noise elimination core of each anechoic room in described exhaust pipe.

The outer ring of described noise elimination core is the micro silencer tube, is provided with horizontal stroke and/or longitudinal separation plate in the described silencing pot, is provided with the micro silencer circle between noise elimination core and shell.

Above-mentioned cavity is the multi-cavity chamber that order is communicated with, and the outlet side of outlet pipe is located on the end that occupy an end chamber, and the other end is located in the chamber that occupy the other end, and suction tude is led to the end and is provided with in the adjacent chamber of the chamber of outlet side.

The through hole that directly is discharged into next chamber with gas in the chamber that suction tude communicates is provided with the spring body valve, and valve body is on the dividing plate between two chambeies.

The spring body valve is made up of spring, rotating shaft, valve plate, and spring is the button spring that control rotating shaft is rotated, and valve plate is installed in the rotating shaft, and it is being attached on the through hole of the dividing plate between two chambeies under the effect of elastic force.

Technological scheme provided by the present invention, the a series of anechoic rooms that have the cylindrical case of outlet pipe and arrange successively vertically, can more effectively eliminate duct noise, especially vortex flow noise, its main points are: have one from axially running through the noise elimination core of each anechoic room, the outer ring of noise elimination core is the micro silencer tube, is provided with horizontal stroke and/or longitudinal separation plate in the silencing pot, is provided with the micro silencer circle between noise elimination core and shell.This exhaust silencer is simple in structure, processing is easy, with low cost, and energy is high temperature resistant, corrosion-resistant, gasproof stream impacts, and long service life has good acoustic attenuation performance simultaneously.

Description of drawings

Accompanying drawing is the acoustic wave filter structure schematic representation among the embodiment.

Among the figure: 1, dividing plate with holes, 2, inlet end, 3, suction tude, 4, chamber II, 5, inlet hole, 6, spring body valve plate, 7, spring body, 8, chamber III, 9, outlet pipe, 10, the outlet side, 11, chamber I, 12, chamber IV, 13, the through hole on chamber III and the chamber II dividing plate, 14, the rotating shaft of band button spring.

The invention will be further described below in conjunction with the drawings and specific embodiments.

Embodiment

Cavity among the embodiment in the silencing apparatus comprises four chamber I, II, III, IV, four chambeies are linked in sequence, be provided with dividing plate with holes 1 between chamber and the chamber, the suction tude 3 that is provided with inlet end 2 is positioned at chamber II4, and suction tude 3 is provided with inlet hole 5, is provided with spring body valve 7 on the chamber II4 of the side of chamber III8 and the dividing plate 1 between the III8 of chamber, spring body valve 7 has a valve plate 6, valve plate 6 can be equipped with the button spring around a rotating shaft 14 rotations in the rotating shaft 14, its rotary state is controlled by the button spring.Valve plate 6 correspondences the through hole on chamber III and the chamber II dividing plate, and through hole 13 is provided with the shirt rim of playing the valve plate leading role, and valve plate 6 is attached in the shirt rim of through hole 13 under the effect of button spring force.

The outlet side 10 of outlet pipe 9 is located on the I11 of chamber, and the other end is located in the IV12 of chamber.Pipe directly leads to the silencing apparatus that is positioned at automobile rear (fuel tank position) after the exhaust from the chassis, is connected with the suction tude 3 of the silencing apparatus of lateral arrangement, and air-flow enters silencing apparatus and eliminates the noise.And, making the exhaust pipe structure complexity if adopt the mode of an end air inlet will need outlet pipe is made U-shaped, manufacture cost increase and gas communication resistance are big.

Brief description is the working principle of silencing apparatus once.

Air-flow enters chamber II4 from the suction tude 3 that is positioned at the silencing apparatus middle part, and along with air-flow constantly increases, air-flow can enter III chamber 8 and IV chamber 12 by the inlet hole on the dividing plate 15; When gas capacity acquires a certain degree, can output to outlet side 10 by outlet pipe 9.When engine power or discharge capacity increase, the pressure that air-flow acts on chamber I, chamber II strengthens, when chamber II pressure acquires a certain degree, just can push spring body valve 6 open, air-flow enters in the III chamber 8, thereby passage section is increased, thereby reaches the effect of regulating noise and reducing exhaust back pressure.

Claims

1, a kind of automobile sound absorber assembly, comprise cavity, suction tude (3), outlet pipe (9), the cavity lateral arrangement, the suction tude of silencing apparatus (3) is located at the middle part of silencing apparatus cavity, outlet pipe (9) is located at the end of silencing apparatus cavity, the tube inside and outside shell [2] of outlet pipe and a series of anechoic rooms [1] of arranging successively vertically is characterized in that there is one from axially running through the noise elimination core [8] of each anechoic room [1] in described exhaust pipe.

2, automobile sound absorber assembly according to claim 1, it is characterized in that: the outer ring of described noise elimination core [8] is micro silencer tube [9], be provided with horizontal stroke and/or longitudinal separation plate [13,14] in the described silencing pot [9], between noise elimination core [8] and shell [2], be provided with micro silencer circle [11].

3, automobile sound absorber assembly according to claim 1, it is characterized in that: multi-cavity chamber I, II, III, IV that above-mentioned cavity is communicated with for order, the outlet side of outlet pipe (10) be located at occupy an end chamber I (11), the end on, the other end is located in the chamber IV (12) that occupy the other end, and suction tude (3) is led to the end and is provided with in the adjacent chamber II (4) of the chamber I (11) of outlet side.

4, automobile sound absorber assembly according to claim 1, it is characterized in that: the through hole (13) that the gas in the chamber II (4) that communicates with suction tude (3) directly is discharged into next chamber III (8) is provided with spring body valve (7), and valve body is on the dividing plate between two chambeies (1).

5, automobile sound absorber assembly according to claim 3, it is characterized in that: spring body valve (7) is made up of spring, rotating shaft (14), valve plate (6), spring is the button spring that control rotating shaft is rotated, valve plate (6) is installed in the rotating shaft (14), and it is on the through hole (13) that is attached to the dividing plate (1) between two chambeies under the effect of elastic force.