CN102330587A

CN102330587A - Microporous silencer

Info

Publication number: CN102330587A
Application number: CN201110191753A
Authority: CN
Inventors: 艾刚; 涂定国
Original assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Current assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Priority date: 2011-07-08
Filing date: 2011-07-08
Publication date: 2012-01-25

Abstract

The invention relates to the technical field of silencers, and discloses a microporous silencer. The microporous silencer comprises a silencer main body, an air inlet pipe and an exhaust pipe, wherein the inside of the silencer main body is sequentially partitioned into a first cavity chamber, a second cavity chamber and a third cavity chamber by baffle plates; the exhaust end of the air inlet pipe extends into the first cavity chamber and is communicated with the first cavity chamber; the first cavity chamber and the third cavity chamber are communicated through a first pipe; the third cavity chamber and the second cavity chamber are communicated through a second pipe; the air inlet end of the exhaust pipe is communicated with the second cavity chamber; two end surfaces of the first pipe are sealed by a plug; and a plurality of micropores communicated with the first cavity chamber and the third cavity chamber respectively are formed on side walls of the two ends of the first pipe. By arranging the three buffer cavity chambers in a sequence of overflowing, airflow can repeatedly collide with cavity chamber walls, and a silencing effect is enhanced; the first pipe is communicated with the cavity chambers through a plurality of micropores, when airflow passes through the micropores, a frequency spectrum of air injection noise can be shifted to high frequency or ultrahigh frequency, and audible sound composition in the frequency spectrum is obviously reduced, so the interference and the damage to human are reduced.

Description

Tiny hole noise silencer

Technical field

The present invention relates to the silencing apparatus technical field.

Background technique

Device such as internal-combustion engine, air compressor, the air-flow that its when operation produces can send huge noise, therefore, needs silencing apparatus to eliminate air power noise, stops sound transmission and allows the air communication mistake.

But the effect that present silencing apparatus abates the noise is relatively poor.

Summary of the invention

In view of this, the purpose of this invention is to provide a kind of better tiny hole noise silencer of noise effects of eliminating.

The objective of the invention is to realize like this: tiny hole noise silencer; Comprise muffler body, suction tude and outlet pipe; Said muffler body inside is divided into chamber I, chamber II and chamber III successively by dividing plate, and the exhaust end of said suction tude stretches in the chamber I and with chamber I and is communicated with, and chamber I is communicated with through pipe I with chamber III; Chamber III is communicated with through pipe II with chamber II, and the inlet end of said outlet pipe is communicated with chamber II; The inlet end of said outlet pipe is communicated with chamber II, and the sealing of said pipe I both ends of the surface is through the plug sealing, and the sidewall at pipe I two ends is provided with a plurality of micropores that are communicated with chamber III with chamber I respectively.

Further, said muffler body comprises inner casing and shell, is placed in the shell in the said inner casing.

Further, said inner casing and shell are spliced by two and half shells respectively.

Further, be provided with the sound-absorption and heat-insulation layer between said inner casing and the shell.

Further, the sealing of said pipe I both ends of the surface, the sidewall at pipe I two ends is provided with a plurality of micropores that are communicated with chamber III with chamber I respectively.

Further, the sealing of said pipe II both ends of the surface, the sidewall at pipe II two ends is provided with a plurality of micropores that are communicated with chamber III with chamber II respectively.

Further, the sealing of the inlet end end face of said outlet pipe, outlet pipe is communicated with chamber II through the micropore that is arranged on its sidewall.

Further, the inlet end of said outlet pipe passes chamber III and stretches into chamber II, and the airintake direction of suction tude and chamber I, chamber II are vertical with the orientation of chamber III.

Further, said silencing apparatus also comprises outer cover, and said outer cover part at least holds muffler body,, muffler body is provided with the outer cover journal stirrup, and said outer cover passes through screw on the outer cover journal stirrup.

Further, said suction tude is a bend pipe.

Further, said muffler body is provided with stiffening plate, and said stiffening plate is provided with support.

The invention has the beneficial effects as follows: 3 buffer chamber are set, air-flow is fully cushioned, and, air-flow is repeatedly bumped with chamber wall, increase the noise elimination effect through setting to 3 buffer chamber overcurrent orders; In further technological scheme, also be provided with the sound-absorption and heat-insulation layer between inner core and the urceolus, further increase the noise elimination effect, and have effect of heat insulation; Outlet pipe, pipe I and/or pipe II all are communicated with chamber through a plurality of micropores, when air-flow passes through micropore, the frequency spectrum of jet noise will shift to high frequency or ultra-high frequency, the audible sound composition in the frequency spectrum is obviously reduced, thereby minimizing is to people's interference and injury.

Description of drawings

In order to make the object of the invention, technological scheme and advantage clearer, will combine accompanying drawing that the present invention is made further detailed description below:

Fig. 1 shows the tiny hole noise silencer structural representation;

Fig. 2 shows the sectional view of Fig. 1.

Embodiment

Below will carry out detailed description to the preferred embodiments of the present invention.

Referring to Fig. 1, Fig. 2; Tiny hole noise silencer comprises muffler body 1, suction tude 2 and outlet pipe 3, it is characterized in that: said muffler body 1 inside is divided into chamber I7, chamber II8 and chamber III9 successively by dividing

plate

4,5; The exhaust end of said suction tude 2 stretches in the chamber I7 and with chamber I7 and is communicated with; Chamber I7 is communicated with through pipe I10 with chamber III9, and chamber III9 is communicated with through pipe II20 with chamber II8, and the inlet end of said outlet pipe 3 is communicated with chamber II8.Said muffler body 1 comprises inner casing 11 and shell 12; Be placed in the shell 12 in the said inner casing 11; Be provided with sound-absorption and heat-insulation layer 6 between said inner casing 11 and the shell 12; Said sound-absorption and heat-insulation layer 6 can adopt the glass felt, and said inner casing 11 is spliced by two and half shells respectively with shell 12, can improve the manufacturing efficiency of muffler body 1.The sealing of said pipe I10 both ends of the surface is through plug 16 sealings, and the sidewall at pipe I10 two ends is provided with a plurality of micropores that are communicated with chamber III9 with chamber I7 respectively.The sealing of said pipe II20 both ends of the surface, the sidewall at pipe II20 two ends are provided with a plurality of micropores that are communicated with chamber III9 with chamber II8 respectively.The inlet end end face sealing of said outlet pipe 3, outlet pipe 3 is communicated with chamber II8 through the micropore that is arranged on its sidewall.The inlet end of said outlet pipe 3 passes chamber III9 and stretches into chamber II8; The airintake direction of suction tude 2 and chamber I7, chamber II8 are vertical with the orientation of chamber III9; Like this; Because the airintake direction of suction tude 2 and chamber I7, chamber II8 are vertical with the orientation of chamber III9, can increase the disorderly degree of air-flow, reach better noise elimination effect.Referring to Fig. 2, said silencing apparatus also comprises outer cover 13, and said outer cover 13 part at least holds muffler body 1; Muffler body 1 is provided with outer cover journal stirrup 19; Said outer cover 13 is fixed on the outer cover journal stirrup 19 through screw 14, and said outer cover 13 can increase sound insulation and effect of heat insulation, and is simultaneously more attractive in appearance.Said suction tude 2 is a bend pipe, and nearly axial wave can absorb and reflect in the elbow, and the energy of nearly axial wave also can change the energy of oblique wave into and be absorbed easily when turning round.Said muffler body 1 is provided with the stiffening plate (not shown), and said stiffening plate is provided with support 17, is convenient to install, and stiffening plate can improve the shock resistance of silencing apparatus, increases the service life.

The above is merely the present invention that preferably is not limited to of the present invention, and obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. tiny hole noise silencer; Comprise muffler body (1), suction tude (2) and outlet pipe (3); It is characterized in that: said muffler body (1) is inner to be divided into chamber I (7), chamber II (8) and chamber III (9) successively by dividing plate (4,5); The exhaust end of said suction tude (2) stretches in the chamber I (7) and with chamber I (7) and is communicated with; Chamber I (7) is communicated with through pipe I (10) with chamber III (9), and chamber III (9) is communicated with through pipe II (20) with chamber II (8), and the inlet end of said outlet pipe (3) is communicated with chamber II (8); Said pipe I (10) both ends of the surface sealings is through plug (16) sealing, and the sidewall at pipe I (10) two ends is provided with a plurality of micropores that are communicated with chamber III (9) with chamber I (7) respectively.

2. tiny hole noise silencer as claimed in claim 1 is characterized in that: said muffler body (1) comprises inner casing (11) and shell (12), is placed in the said inner casing (11) in the shell (12).

3. tiny hole noise silencer as claimed in claim 2 is characterized in that: said inner casing (11) and shell (12) are spliced by two and half shells respectively.

4. tiny hole noise silencer as claimed in claim 2 is characterized in that: be provided with sound-absorption and heat-insulation layer (6) between said inner casing (11) and the shell (12).

5. like each described tiny hole noise silencer in the claim 1 to 4, it is characterized in that: said pipe II (20) both ends of the surface sealings, the sidewall at pipe II (20) two ends are provided with a plurality of micropores that are communicated with chamber III (9) with chamber II (8) respectively.

6. tiny hole noise silencer as claimed in claim 5 is characterized in that: the inlet end end face sealing of said outlet pipe (3), outlet pipe (3) is communicated with chamber II (8) through the micropore that is arranged on its sidewall.

7. tiny hole noise silencer as claimed in claim 6 is characterized in that: the inlet end of said outlet pipe (3) passes chamber III (9) and stretches into chamber II (8), and the airintake direction of suction tude (2) and chamber I (7), chamber II (8) are vertical with the orientation of chamber III (9).

8. tiny hole noise silencer as claimed in claim 7; It is characterized in that: said tiny hole noise silencer also comprises outer cover (13); Said outer cover (13) part at least holds muffler body (1); Muffler body (1) is provided with outer cover journal stirrup (19), and said outer cover (13) is fixed on the outer cover journal stirrup (19) through screw (14).

9. tiny hole noise silencer as claimed in claim 9 is characterized in that: said suction tude (2) is a bend pipe.

10. tiny hole noise silencer as claimed in claim 9 is characterized in that: said muffler body (1) is provided with stiffening plate, and said stiffening plate is provided with support (17).