CN101285411A

CN101285411A - Silencing device

Info

Publication number: CN101285411A
Application number: CNA2008100618263A
Authority: CN
Inventors: 许坚强
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-16
Filing date: 2008-05-16
Publication date: 2008-10-15

Abstract

The invention relates to the mechanical technology field, in particular to a silencer which comprises a shell, and is characterized in that an inlet cavity communicated with an outlet of an silencing pipe is arranged in the middle of the shell, a chamber group composed of a plurality of chambers communicated with each other is arranged at the periphery of the air inlet cavity, the inlet cavity is communicated with a chamber at one end of the chamber group, a chamber at the other end of the chamber group is communicated with an outlet cavity on which an outlet pipe is arranged. Compared with the prior art, the silencer has the advantages that: 1. the structure is simple, is easy to implement and is low in the manufacturing cost. 2. The structure is good in silencing effect, can eliminate noise effectively so as to realize environment protection; 3. The structure occupies less space, is easy to install and maintain and can effectively isolate heat dispersion.

Description

Silencer

Technical field

The present invention relates to field of mechanical technique, especially relate to a kind of silencer, be specially adapted in the generator.

Background technique

Silencer is widely used in all trades and professions.In order to obtain better to abate the noise effect, people have carried out long-term exploration, have proposed various solutions, and some has also applied for patent.For example, Chinese patent literature discloses a kind of exhaust emissions of diesel machines such as Motor Vehicle and generator set and device [application number: CN99240671.4] that noise reduction is used of being suitable for, and it includes some grades of air chambers, inner casing, shell, outlet pipe, exhaust port etc.This device is owing to the structure that adopts through multistage air chamber decompression, noise reduction, filtration, and therefore, it not only can play sound deadening, and can and filter the flushing of the harmful components in the tail gas, reach environmental protection requirement.The somebody has invented a kind of exhaust muffling device [application number: CN200410086674.4], it provides a kind of length of the outer pipe regardless of the outlet pipe that links to each other with silencing apparatus, can both suppress the gas column sympathetic response with simple structure more satisfactoryly, and can realize more satisfactoryly that lightweight reaches exhaust muffling device cheaply.This exhaust muffling device possesses: the length with discharge directions is the silencing apparatus of the expansion chamber of L; And be communicated with expansion chamber, pipe range is the outer pipe of about 2nL (n is a natural number).

Still there is bigger defective in the design of above-mentioned silencer, and erasure effect is not good on the one hand, because there is defective in the position of installing, takies big quantity space on the other hand.

Summary of the invention

The objective of the invention is at the problems referred to above, provide a kind of reasonable in design, it is little to take up room, and is easy to installation and maintenance, silencer applied widely.

Another object of the present invention is at the problems referred to above, and a kind of good muffling effect is provided, and can effectively completely cut off the silencer of heat diffusion

For achieving the above object, the present invention has adopted following technical proposal: this silencer, be arranged on the outlet port of silencing pipeline, comprise a housing, it is characterized in that, be provided with the air-inlet cavity that links to each other with the outlet port of silencing pipeline at the middle part of housing, be provided with the chamber group of forming and being communicated with successively by several chambers in the periphery of air-inlet cavity, air-inlet cavity is connected with the chamber that is positioned at chamber group one end, and the chamber that is positioned at the chamber group the other end is connected with exhaust cavity, is provided with outlet pipe on exhaust cavity.

In above-mentioned silencer, described each chamber is arranged on the periphery of air-inlet cavity ringwise.Each chamber is provided with ringwise and is beneficial to air-flow and moves unobstructedly, improves noise reduction.

In above-mentioned silencer, described chamber group is that first chamber, second chamber, the 3rd chamber and the 4th chamber are formed by four chambers that link to each other successively, and described air-inlet cavity is connected with first chamber, and described exhaust cavity is connected with the 4th chamber.

In above-mentioned silencer, be connected by a straight-through tube between the described air-inlet cavity and first chamber, first chamber links to each other by a dividing plate that has even distribution vent with second chamber, second chamber links to each other by a transition straight tube with the 3rd chamber, the 3rd chamber links to each other by the transition bend pipe with the 4th chamber, and the 4th chamber links to each other by a dividing plate that has even distribution vent with exhaust cavity.

In above-mentioned silencer, be provided with folded plate in the described transition straight tube.Folded plate is set further improves erasure effect.

In above-mentioned silencer, described transition bend pipe is the U type, and the transition bend pipe passes air-inlet cavity the 3rd chamber and the 4th chamber are connected.

In above-mentioned silencer, the inwall of described housing is provided with the noise reduction asbestos layer.The noise reduction asbestos layer not only has the effect of sound insulation, and has heat insulation effect.

In above-mentioned silencer, described folded plate is made up of some straight plates, and each straight plate joins end to end, and to be the Z font continuous.Certainly, the folded plate here also can be formed by a sheet material bending.

In above-mentioned silencer, the volume of described air-inlet cavity and exhaust cavity is greater than the volume of each chamber in the chamber group.Air-inlet cavity and exhaust cavity can be realized the air-flow expansion, further improve noise reduction.

In above-mentioned silencer, described outlet pipe takes the shape of the letter U, and the inner of outlet pipe is provided with cover plate, on the cover board has some equally distributed vents.

Compared with prior art, the advantage of this silencer is: 1, reasonable in design, simple in structure, easy to implement, manufacture cost is lower.2, good muffling effect can effectively abate the noise, and reaches environmental protection requirement.3, take up room for a short time, be easy to installation and maintenance, and can effectively completely cut off heat diffusion.

Description of drawings

Fig. 1 is the user mode figure of silencer provided by the invention.

Fig. 2 is the sectional view of silencer provided by the invention.

Among the figure, motor 1, radiating fin 11, cabinet 2, hot channel 3, heat insulation asbestos layer 300, silencing pipeline 4, through hole 41, silencer 5, housing 51, noise reduction asbestos layer 500, air-inlet cavity 52, exhaust cavity 53, first chamber 54, second chamber 55, the 3rd chamber 56, the 4th chamber 57, outlet pipe 58, cover plate 581, straight-through tube 6, dividing plate 7, vent 71, transition straight tube 8, folded plate 81, straight plate 81a, transition bend pipe 9.

Embodiment

As shown in Figure 1, be that this silencer is installed in an embodiment on the cabinet 2 that is used to place generator 1.Certainly this silencer can also be applied on other devices that need reduce or abate the noise.

More particularly, in cabinet 2, be provided with hot channel 3, one end of hot channel 3 is positioned at radiating fin 11 places of generator 1, the other end extends to outside the cabinet 2, in hot channel 3, be provided with a silencing pipeline 4, one end of silencing pipeline 4 is positioned at radiating fin 11 places of generator 1, and the other end extends to outside the cabinet 2.As can be seen from the figure, above-mentioned silencing pipeline 4 is arranged on cabinet 2 bottoms.As shown in Figure 1, the inwall of hot channel 3 is provided with heat insulation asbestos layer 300.The inwall of housing 51 is provided with noise reduction asbestos layer 500.Noise reduction asbestos layer 510 not only has the effect of sound insulation, and has heat insulation effect.

As shown in Figure 2, silencer 5 comprises a housing 51, be provided with the air-inlet cavity 52 that links to each other with the outer end of silencing pipeline 4 at the middle part of housing 51, be provided with the chamber group of forming and being communicated with successively by several chambers in the periphery of air-inlet cavity 52, air-inlet cavity 52 is connected with the chamber that is positioned at chamber group one end, the chamber that is positioned at the chamber group the other end is connected with exhaust cavity 53, is provided with outlet pipe 58 on exhaust cavity 53.

In the present embodiment, the chamber group is that first chamber 54, second chamber 55, the 3rd chamber 56 and the 4th chamber 57 are formed by four chambers that link to each other successively, and described air-inlet cavity 52 is connected with first chamber 54, and described exhaust cavity 53 is connected with the 4th chamber 57.Four chambers are arranged on the periphery of air-inlet cavity 52 ringwise.Each chamber is provided with ringwise and is beneficial to air-flow and moves unobstructedly, improves noise reduction.

Be connected by a straight-through tube 6 between the air-inlet cavity 52 and first chamber 54, first chamber 54 links to each other by a dividing plate 7 that has even distribution vent 71 with second chamber 55, second chamber 55 links to each other by a transition straight tube 8 with the 3rd chamber 56, the 3rd chamber 56 links to each other by transition bend pipe 9 with the 4th chamber 57, and the 4th chamber 57 links to each other by a dividing plate 7 that has even distribution vent 71 with exhaust cavity 53.

Be provided with folded plate 81 in the transition straight tube 8.Folded plate 81 is made up of some straight plate 81a, and each straight plate 81a joins end to end, and to be the Z font continuous.Folded plate 8 is set further improves erasure effect.The folded plate 8 here also can be formed by bending by a monoblock sheet material.Transition bend pipe 9 is the U type, and transition bend pipe 9 passes air-inlet cavity 52 the 3rd chamber 56 and the 4th chamber 57 are connected.The outer end of the silencing pipeline 4 here is provided with some through holes 41.

The volume of air-inlet cavity 52 and exhaust cavity 53 is greater than the volume of each chamber in the chamber group.Big air-inlet cavity 52 and exhaust cavity 53 are set help the air-flow diffusion, improve noise reduction.Outlet pipe 58 takes the shape of the letter U, and the inner of outlet pipe 58 is provided with cover plate 581, has some equally distributed vents 71 on cover plate 581.

Specific embodiment described herein only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Although this paper has used terms such as motor 1, radiating fin 11, cabinet 2, hot channel 3, heat insulation asbestos layer 300, silencing pipeline 4, through hole 41, silencer 5, housing 51, noise reduction asbestos layer 500, air-inlet cavity 52, exhaust cavity 53, first chamber 54, second chamber 55, the 3rd chamber 56, the 4th chamber 57, outlet pipe 58, cover plate 581, straight-through tube 6, dividing plate 7, vent 71, transition straight tube 8, folded plate 81, straight plate 81a, transition bend pipe 9 morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; They are construed to any additional restriction all is contrary with spirit of the present invention.

Claims

1. silencer, be arranged on the outlet port of silencing pipeline (4), comprise a housing (51), it is characterized in that, be provided with the air-inlet cavity (52) that links to each other with the outlet port of silencing pipeline (4) at the middle part of housing (51), be provided with the chamber group of forming and being communicated with successively by several chambers in the periphery of air-inlet cavity (52), air-inlet cavity (52) is connected with the chamber that is positioned at chamber group one end, the chamber that is positioned at the chamber group the other end is connected with exhaust cavity (53), is provided with outlet pipe (58) on exhaust cavity (53).

2. silencer according to claim 1 is characterized in that described each chamber is arranged on the periphery of air-inlet cavity (52) ringwise.

3. silencer according to claim 2, it is characterized in that, promptly form by first chamber (54), second chamber (55), the 3rd chamber (56) and the 4th chamber (57) by four chambers that link to each other successively for described chamber group, described air-inlet cavity (52) is connected with first chamber (54), and described exhaust cavity (53) is connected with the 4th chamber (57).

4. silencer according to claim 3, it is characterized in that, be connected by a straight-through tube (6) between described air-inlet cavity (52) and first chamber (54), first chamber (54) links to each other by a dividing plate (7) that has even distribution vent (71) with second chamber (55), second chamber (55) links to each other by a transition straight tube (8) with the 3rd chamber (56), the 3rd chamber (56) links to each other by transition bend pipe (9) with the 4th chamber (57), and the 4th chamber (57) links to each other by a dividing plate (7) that has even distribution vent (71) with exhaust cavity (53).

5. silencer according to claim 4 is characterized in that, is provided with folded plate (81) in the described transition straight tube (8).

6. silencer according to claim 4 is characterized in that, described transition bend pipe (9) is the U type, and transition bend pipe (9) passes air-inlet cavity (52) the 3rd chamber (56) and the 4th chamber (57) are connected.

7. according to any described silencer in the claim 1～6, it is characterized in that the inwall of described housing (51) is provided with noise reduction asbestos layer (500).

8. silencer according to claim 5 is characterized in that, described folded plate (81) is made up of some straight plates (81a), and each straight plate (81a) joins end to end, and to be the Z font continuous.

9. silencer according to claim 7 is characterized in that, the volume of described air-inlet cavity (52) and exhaust cavity (53) is greater than the volume of each chamber in the chamber group.

10. silencer according to claim 7 is characterized in that, described outlet pipe (58) takes the shape of the letter U, and the inner of outlet pipe (58) is provided with cover plate (581), has some equally distributed vents (71) on cover plate (581).