CN102330588A

CN102330588A - Strip silencer

Info

Publication number: CN102330588A
Application number: CN201110191818A
Authority: CN
Inventors: 艾刚; 涂定国
Original assignee: CHONGQING BEIBEI DISTRICT FENGHUO MACHINERY MANUFACTURING Co Ltd
Current assignee: Chongqing Chi Chi General Power Co., Ltd.
Priority date: 2011-07-08
Filing date: 2011-07-08
Publication date: 2012-01-25
Anticipated expiration: 2031-07-08
Also published as: CN102330588B

Abstract

The invention relates to the technical field of silencers, and particularly provides a silencer which is better in noise elimination effect. The silencer comprises a silencer main body, an air inlet pipe, an exhaust pipe and a strip outer cover, wherein the silencer main body is accommodated in at least part of the strip outer cover; the strip outer cover and the silencer main body are fixed through screws; the air inlet direction of the air inlet pipe is perpendicular to the exhaust direction of the exhaust pipe; an exhaust port is formed on the strip outer cover; and the exhaust pipe is connected with the exhaust port after being bent. In the silencer, by arranging a shell, a certain silencing and heat insulation effect can be enhanced, and the silencer is more attractive in appearance; the air inlet direction of the air inlet pipe is perpendicular to the exhaust direction of the exhaust pipe, so more collision can be produced during flowing of airflow, and the disorder degree of the airflow is increased to achieve a better silencing effect; and the exhaust pipe is bent, so nearly axial waves in sound waves can be absorbed and reflected at a bending position, and the energy of the nearly axial waves can be transformed into the energy of oblique waves during bending to be easily absorbed.

Description

The bar shaped silencing apparatus

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 bar shaped silencing apparatus of noise effects of eliminating.

The objective of the invention is to realize like this: the bar shaped silencing apparatus; Comprise muffler body, suction tude and outlet pipe, said silencing apparatus also comprises the bar shaped outer cover, and said bar shaped outer cover part at least holds muffler body; Said bar shaped outer cover and muffler body are passed through screw; The airintake direction of said suction tude is vertical with the discharge directions of outlet pipe, and said bar shaped outer cover is provided with relief opening, is connected with relief opening after the outlet pipe bending.

Further; Said muffler body inside is divided into chamber I, chamber II and chamber III successively by dividing plate; The exhaust end of said suction tude stretches in the chamber I and with chamber I and is communicated with; Chamber I is communicated with through pipe I with chamber III, and chamber III is communicated with through pipe II with chamber II, and the inlet end of said outlet pipe is communicated with chamber II.

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 holes 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 holes 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 hole that is arranged on its sidewall.

Further, the inlet end of said outlet pipe passes chamber III and stretches into chamber II.

Further, said shell is provided with relief opening, and outlet pipe is connected with relief opening.

The invention has the beneficial effects as follows: be provided with shell; Can increase certain noise reduction and effect of heat insulation, make outward appearance more attractive in appearance simultaneously, the airintake direction of said suction tude is vertical with the discharge directions of outlet pipe; Can make air-flow in flow process, produce more collision; Increase the disorderly degree of air-flow, better noise elimination effect, outlet pipe bending; Nearly axial wave in the sound wave can be absorbed 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.Further in the technological scheme, 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 apertures, when air-flow passes through through hole, 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 muffler body structural representation;

Fig. 2 shows the acoustic wave filter structure schematic representation;

Embodiment

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

Referring to Fig. 1; Silencing apparatus 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 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 III9, and chamber III9 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 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 I 10 both ends of the surface, the sidewall at pipe I 10 two ends are provided with a plurality of holes that are communicated with chamber III 9 with chamber I 7 respectively.The sealing of said pipe II 20 both ends of the surface, the sidewall at pipe II20 two ends are provided with a plurality of holes that are communicated with chamber III9 with chamber II 8 respectively.The inlet end end face sealing of said outlet pipe 3, outlet pipe 3 is communicated with chamber II 8 through the hole that is arranged on its sidewall.The inlet end of said outlet pipe 3 passes chamber III9 and stretches into chamber II 8; The airintake direction of suction tude 2 and chamber I 7, chamber II 8 are vertical with the orientation of chamber III9; The airintake direction of said suction tude 2 is also vertical with the discharge directions of outlet pipe 3; Like this, can increase the disorderly degree of air-flow, reach better noise elimination effect.Referring to Fig. 2; Said silencing apparatus also comprises bar shaped outer cover 13, and said bar shaped outer cover 13 part at least holds muffler body 1, and said bar shaped outer cover 13 is fixing through screw 14 with muffler body 1; Said bar shaped outer cover 13 can increase sound insulation and effect of heat insulation, and is simultaneously more attractive in appearance.Said shell is provided with relief opening 15, is connected with relief opening 15 after outlet pipe 3 bendings.

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. bar shaped silencing apparatus; Comprise muffler body (1), suction tude (2) and outlet pipe (3), it is characterized in that: said silencing apparatus also comprises bar shaped outer cover (13), and said bar shaped outer cover (13) part at least holds muffler body (1); Said bar shaped outer cover (13) is fixing through screw (14) with muffler body (1); The airintake direction of suction tude (2) is vertical with the discharge directions of outlet pipe (3), and said bar shaped outer cover (13) is provided with relief opening (15), is connected with relief opening (15) after outlet pipe (3) bending.

2. silencing apparatus as claimed in claim 1; 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).

3. bar shaped silencing apparatus as claimed in claim 2 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).

4. bar shaped silencing apparatus as claimed in claim 3 is characterized in that: said inner casing (11) and shell (12) are spliced by two and half shells respectively.

5. bar shaped silencing apparatus as claimed in claim 4 is characterized in that: be provided with sound-absorption and heat-insulation layer (6) between said inner casing (11) and the shell (12).

6. like each described bar shaped silencing apparatus in the claim 1 to 4, it is characterized in that: said pipe I (10) both ends of the surface sealings, the sidewall at pipe I (10) two ends are provided with a plurality of holes that are communicated with chamber III (9) with chamber I (7) respectively.

7. bar shaped silencing apparatus as claimed in claim 6 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 holes that are communicated with chamber III (9) with chamber II (8) respectively.

8. bar shaped silencing apparatus as claimed in claim 7 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 hole that is arranged on its sidewall.

9. bar shaped silencing apparatus as claimed in claim 8 is characterized in that: the inlet end of said outlet pipe (3) passes chamber III (9) and stretches into chamber II (8).