CN212643888U

CN212643888U - Impedance composite silencer

Info

Publication number: CN212643888U
Application number: CN202021437110.1U
Authority: CN
Inventors: 陈敏华
Original assignee: Hangzhou Nuohong Ventilation Equipment Co ltd
Current assignee: Hangzhou Nuohong Ventilation Equipment Co ltd
Priority date: 2020-07-21
Filing date: 2020-07-21
Publication date: 2021-03-02
Anticipated expiration: 2030-07-21

Abstract

The utility model discloses an impedance composite muffler, which comprises a housin, the cavity has been seted up to the inside of casing, the inner wall fixedly connected with sound absorbing layer of casing, sound absorbing intraformational one side has inorganic foam layer through the adhesive bonding, inorganic foam layer's one side has inorganic fiber layer through the adhesive bonding. This impedance composite muffler, through the sound absorbing layer, first noise damping piece, the second noise damping piece, the third noise damping piece, first damping noise damping board, the second damping noise damping board, first noise damping net, the second noise damping net, first perforation, the second is perforated, the design of third perforation and foam-rubber cushion, can offset and weaken the noise through multi-level multi-angle, thereby eliminate the noise, this design can carry out the multiple reflection with the noise, and simultaneously, the inorganic foam layer that sets up in the sound absorbing layer, the material on inorganic fiber layer and organic fiber layer, can absorb partial noise, thereby weaken the noise, improve the efficiency of noise elimination, user's use has been convenient for.

Description

Impedance composite silencer

Technical Field

The utility model relates to a silencer technical field specifically is an impedance composite muffler.

Background

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance compound mufflers.

Most of the conventional mufflers cannot effectively reduce and eliminate noise, so that the mufflers cannot be used conveniently by users. Therefore, we propose an impedance compound muffler.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an impedance composite muffler to propose traditional silencer in solving above-mentioned background art and can mostly not carry out effectual weakening and elimination to the noise, thereby can not the problem that convenient to use person better goes to use the silencer.

In order to achieve the above object, the utility model provides a following technical scheme: an impedance composite muffler comprises a shell, wherein a cavity is formed in the shell, a sound absorption layer is fixedly connected to the inner wall of the shell, an inorganic foam layer is bonded to one side of the sound absorption layer through an adhesive, an inorganic fiber layer is bonded to one side of the inorganic foam layer through the adhesive, an organic fiber layer is bonded to one side of the inorganic fiber layer through the adhesive, first clapboards are fixedly connected to the top and the bottom of the inner wall of the sound absorption layer, second clapboards are fixedly connected to the front side and the rear side of the inner wall of the sound absorption layer, the two first clapboards and the two second clapboards are designed in an integrated mode, a first clamping board and a second clamping board are fixedly connected to the two sides between the two first clapboards, a first sound attenuation net is fixedly installed at the position of the top of the first clamping board and the position of the second clamping board, and two connecting plates are fixedly installed at the position of one side of the two first, the connecting plate is characterized in that a through hole is formed in the connecting plate, a first silencing sheet is fixedly connected between the two first partition plates corresponding to the two connecting plates, a first through hole is formed in the first silencing sheet, a first damping silencing plate and a second damping silencing plate are fixedly connected to the positions, close to the center, of the two first partition plates, a second silencing net is fixedly mounted on the positions, close to the bottom, of the first damping silencing plate and the second damping silencing plate, two second silencing sheets are fixedly connected to the positions, close to the other side, of the two first partition plates, a second through hole is formed in the second silencing sheet, a third silencing sheet is fixedly connected to the positions, close to the other side, of the two first partition plates corresponding to the two second silencing sheets, a third through hole is formed in the third silencing sheet, and a sponge cushion is fixedly connected to the other side of the two first partition plates.

Preferably, the first clamping plate and the second clamping plate are arranged in a crossed manner with the first damping sound-absorbing plate and the second damping sound-absorbing plate.

Preferably, the shapes of the first sound-absorbing sheet, the second sound-absorbing sheet and the third sound-absorbing sheet are streamline.

Preferably, the top and the bottom of the shell are provided with air holes close to the center.

Preferably, the casing is communicated with a sound inlet pipe through a sound inlet opening formed in one side of the casing.

Preferably, the casing is communicated with a sound outlet pipe through a sound outlet arranged on the other side of the casing.

Compared with the prior art, the beneficial effects of the utility model are that:

this impedance composite muffler, through the sound absorbing layer, first noise damping piece, the second noise damping piece, the third noise damping piece, first damping noise damping board, the second damping noise damping board, first noise damping net, the second noise damping net, first perforation, the second is perforated, the design of third perforation and foam-rubber cushion, can offset and weaken the noise through multi-level multi-angle, thereby eliminate the noise, this design can carry out the multiple reflection with the noise, and simultaneously, the inorganic foam layer that sets up in the sound absorbing layer, the material on inorganic fiber layer and organic fiber layer, can absorb partial noise, thereby weaken the noise, improve the efficiency of noise elimination, user's use has been convenient for.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1;

fig. 4 is a sectional view of the sound absorbing layer of the present invention.

In the figure: 1. a housing; 2. a sound absorbing layer; 3. a first separator; 4. a second separator; 5. a first clamping plate; 6. a first sound-deadening mesh; 7. a second clamping plate; 8. a connecting plate; 9. a through hole; 10. a first noise reduction sheet; 11. a first perforation; 12. a first damping acoustical panel; 13. a second damping acoustical panel; 14. a second sound-deadening mesh; 15. a second sound-deadening sheet; 16. a second perforation; 17. a third sound-deadening sheet; 18. a third perforation; 19. a sponge cushion; 20. a sound outlet pipe; 21. air holes; 22. a sound inlet pipe; 23. an inorganic foam layer; 24. an inorganic fiber layer; 25. and an organic fiber layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an impedance composite muffler comprises a shell 1, a cavity is arranged in the shell 1, a sound absorption layer 2 is fixedly connected to the inner wall of the shell 1, an inorganic foam layer 23 is bonded to one side in the sound absorption layer 2 through an adhesive, an inorganic fiber layer 24 is bonded to one side of the inorganic foam layer 23 through an adhesive, an organic fiber layer 25 is bonded to one side of the inorganic fiber layer 24 through an adhesive, first partition plates 3 are fixedly connected to the top and the bottom of the inner wall of the sound absorption layer 2, second partition plates 4 are fixedly connected to the front side and the rear side of the inner wall of the sound absorption layer 2, the two first partition plates 3 and the two second partition plates 4 are designed in an integrated mode, a first clamping plate 5 and a second clamping plate 7 are fixedly connected to two sides between the two first partition plates 3, a first sound attenuation net 6 is fixedly installed at the positions, close to the top, two connecting plates 8 are fixedly installed at the positions, close to one side, between the two first partition plates 3, through-hole 9 has been seted up to the inside of connecting plate 8, correspond first noise damping piece 10 of fixedly connected with between two connecting plates 8 between two first baffles 3, first perforation 11 has been seted up to the inside of first noise damping piece 10, lean on central point position fixedly connected with first damping noise damping board 12 and second damping noise damping board 13 between two first baffles 3, the equal fixed mounting in bottom position that leans on of first damping noise damping board 12 and second damping noise damping board 13 has second noise damping net 14, lean on two second noise damping pieces 15 of another side position fixedly connected with between two first baffles 3, second perforation 16 has been seted up to the inside of second noise damping piece 15, correspond fixedly connected with third noise damping piece 17 between two second noise damping pieces 15 between two first baffles 3, third perforation 18 has been seted up to the inside of third noise damping piece 17, opposite side fixedly connected with foam-rubber cushion 19 between two first baffles 3.

The utility model discloses in: the first clamping plate 5 and the second clamping plate 7 are arranged in a crossed manner with the first damping sound-absorbing plate 12 and the second damping sound-absorbing plate 13; the noise can be reflected a plurality of times by the cross arrangement.

The utility model discloses in: the shapes of the first silencing sheet 10, the second silencing sheet 15 and the third silencing sheet 17 are streamline; the streamline design can improve the noise elimination effect of the noise elimination sheet.

The utility model discloses in: the positions near the center of the top and the bottom of the shell 1 are both provided with air holes 21; the air holes 21 are designed to play a role of ventilation.

The utility model discloses in: the shell 1 is communicated with a sound inlet pipe 22 through a sound inlet arranged on one side of the shell; the sound inlet pipe 22 is designed to transmit noise to the inside of the casing 1.

The utility model discloses in: the shell 1 is communicated with a sound outlet pipe 20 through a sound outlet arranged on the other side of the shell; the sound outlet pipe 20 is designed to discharge the noise after the noise is eliminated.

The working principle is as follows: noise enters the inside of the shell 1 from the sound inlet pipe 22, sequentially passes through the first silencing net 6 arranged at the top positions of the first clamping plate 5 and the second clamping plate 7, the through hole 9 of the connecting plate 8 and the first through hole 11 formed in the first silencing sheet 10, and then passes through the second silencing net 14 arranged on the first damping silencing plate 12 and the second damping silencing plate 13, and then passes through the second through hole 16 and the third through hole 18 on the two second silencing sheets 15 and the third silencing sheet 17, and finally passes through the first silencing net 6 and the spongy cushion 19 arranged on the first clamping plate 5 and the second clamping plate 7, and is discharged from the sound outlet pipe 20, and the noise can be effectively counteracted through multiple times of reflection of the noise and arrangement of different angles of the structure.

In summary, the following steps: this impedance composite muffler, through the sound absorbing layer 2, first noise reduction piece 10, second noise reduction piece 15, third noise reduction piece 17, first damping noise reduction board 12, second damping noise reduction board 13, first noise reduction net 6, second noise reduction net 14, first perforation 11, second perforation 16, the design of third perforation 18 and foam-rubber cushion 19, can offset and weaken the noise through multi-level multi-angle, thereby eliminate the noise, this design can carry out multiple reflection with the noise, and simultaneously, inorganic foam layer 23, inorganic fiber layer 24 and organic fiber layer 25's the material that sets up in the sound absorbing layer 2, can absorb partial noise, thereby weaken the noise, improve the efficiency of eliminating the noise, user's use has been convenient for.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An impedance composite muffler comprising a housing (1), characterized in that: the sound absorption structure is characterized in that a cavity is formed in the shell (1), a sound absorption layer (2) is fixedly connected to the inner wall of the shell (1), an inorganic foam layer (23) is bonded to one side in the sound absorption layer (2) through an adhesive, an inorganic fiber layer (24) is bonded to one side of the inorganic foam layer (23) through an adhesive, an organic fiber layer (25) is bonded to one side of the inorganic fiber layer (24) through an adhesive, first partition plates (3) are fixedly connected to the top and the bottom of the inner wall of the sound absorption layer (2), second partition plates (4) are fixedly connected to the front side and the rear side of the inner wall of the sound absorption layer (2), the two first partition plates (3) and the two second partition plates (4) are designed to be integrated, first clamping plates (5) and second clamping plates (7) are fixedly connected to the two sides between the two first partition plates (3), and first silencing nets (6) are fixedly mounted on the top portions of the first clamping plates (5) and the second clamping plates (7), two connecting plates (8) are fixedly arranged at positions close to one side between the two first partition plates (3), through holes (9) are formed in the connecting plates (8), first silencing plates (10) are fixedly connected between the two first partition plates (3) and between the two corresponding connecting plates (8), first through holes (11) are formed in the first silencing plates (10), first damping silencing plates (12) and second damping silencing plates (13) are fixedly connected at positions close to the center between the two first partition plates (3), second silencing nets (14) are fixedly arranged at positions close to the bottoms of the first damping silencing plates (12) and the second damping silencing plates (13), two second silencing plates (15) are fixedly connected at positions close to the other side between the two first partition plates (3), and second through holes (16) are formed in the second silencing plates (15), correspond fixedly connected with third noise elimination piece (17) between two second noise elimination pieces (15) between two first baffles (3), third perforation (18) have been seted up to the inside of third noise elimination piece (17), opposite side fixedly connected with foam-rubber cushion (19) between two first baffles (3).

2. The impedance composite muffler of claim 1, wherein: the first clamping plate (5) and the second clamping plate (7) are arranged in a crossed manner with the first damping sound-absorbing plate (12) and the second damping sound-absorbing plate (13).

3. The impedance composite muffler of claim 1, wherein: the shapes of the first silencing sheet (10), the second silencing sheet (15) and the third silencing sheet (17) are streamline.

4. The impedance composite muffler of claim 1, wherein: air holes (21) are formed in the positions close to the center of the top and the bottom of the shell (1).

5. The impedance composite muffler of claim 1, wherein: the shell (1) is communicated with a sound inlet pipe (22) through a sound inlet arranged on one side of the shell.

6. The impedance composite muffler of claim 1, wherein: the shell (1) is communicated with a sound outlet pipe (20) through a sound outlet arranged on the other side of the shell.