Buffer type silencer

Abstract

The utility model discloses a buffer type silencer. An air inlet and an air outlet are formed in the two ends of a shell respectively. A first baffle plate and a second baffle plate are fixed in the shell from the air inlet to the air outlet; an inner barrel and an outer barrel are fixed between the first baffle and the second baffle, an air inlet is formed in the first baffle outside the outer barrel and communicated with the air inlet, and at least one first air passing opening is formed in the inner wall of the outer barrel located at the position of the second baffle and communicated with the air inlet. At least one second air passing opening is formed in the inner wall, located at the first baffle, of the inner cylinder, an air outlet is formed in the second baffle located within the range of the inner cylinder, and the air outlet is communicated with the exhaust opening. Under the condition that the length of the external middle body is inconvenient, the inner cylinder and the outer cylinder are arranged to increase exhaust channels, the circumferential air inlet and the central air outlet are matched to increase the exhaust smoothness, and the porous damping plate is matched to absorb sound waves.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle accessories, and in particular relates to a buffer type silencer. Background Art

[0002] Automobile muffler is an important component of automobile, which is helpful to reduce the noise pollution generated by automobile driving. There are many types of mufflers on the market, but these mufflers only differ in appearance and installation. The muffler effect is mostly related to the length in the muffler. However, since the area size of the existing muffler installation position is fixed, the use of a longer muffler is difficult to install and consumes costs. Therefore, it is very important to obtain a buffer muffler that overcomes the above defects. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the utility model provides a buffer type silencer, comprising a shell, wherein two ends of the shell respectively form an air inlet and an exhaust port;

[0004] A first baffle and a second baffle are fixed in the housing from the air inlet to the air outlet;

[0005] An inner cylinder and an outer cylinder are fixed between the first baffle plate and the second baffle plate, an air inlet is provided on the first baffle plate outside the outer cylinder, and the air inlet is communicated with the air inlet, at least one first air outlet is provided on the inner wall of the outer cylinder located at the second baffle plate, at least one second air outlet is provided on the inner wall of the inner cylinder located at the first baffle plate, and an air outlet is provided on the second baffle plate within the range of the inner cylinder, and the air outlet is communicated with the exhaust port.

[0006] Through the above technical solution, the utility model adopts upper peripheral air intake and central air outlet to achieve smooth exhaust, increase the length of the exhaust channel, and enhance the silencing effect.

[0007] As a preferred embodiment of the above, a conical air guide plate is fixed on the top of the inner cylinder.

[0008] Through the above technical solution, the setting of the conical air guide plate can guide the central airflow to the circumference, thereby increasing the smoothness of the airflow.

[0009] As a preferred embodiment of the above, the air inlet, the air outlet, the inner tube and the outer tube are coaxial.

[0010] As a preferred embodiment, a porous damping plate is provided at least one of the locations between the outer wall of the outer tube and the inner wall of the outer shell, between the inner wall of the outer tube and the outer wall of the inner tube, and between the inner walls of the inner tube. The porous damping plate is provided obliquely.

[0011] Through the above technical solution, the provision of the porous damping plate can increase the sound absorption effect.

[0012] As a preferred embodiment of the above, the first air inlet is opened inwardly and obliquely toward the first baffle plate. The second air inlet is opened inwardly and obliquely toward the first baffle plate.

[0013] Through the above technical solution, the oblique arrangement of the first air outlet and the second air outlet increases the fluency of exhaust.

[0014] As a preferred embodiment of the above, an arc transition surface is provided between the circumference of the second baffle and the inner wall of the shell; and an inclined surface inclined toward the first baffle and inward is provided between the outer cylinder and the inner cylinder and close to the first baffle.

[0015] Through the above technical solution, the arrangement of the inclined surface and the arc transition surface can make the exhaust smoother.

[0016] Compared with the prior art, the advantages of the utility model are: the utility model has a simple structure, and when the length of the external body is inconvenient, the exhaust channel is increased by setting an inner tube and an outer tube, and the smoothness of the exhaust is increased by cooperating with a circular air inlet and a central air outlet, and the porous damping plate is set to absorb sound waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross section of the utility model Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the cross section of the utility model Figure 2 ;

[0019] Figure 3 This is a schematic diagram of the cross section of the utility model Figure 3 ;

[0020] Reference numerals:

[0021] 1 housing; 101 air inlet; 102 exhaust port;

[0022] 201 first baffle; 202 second baffle;

[0023] 301 inner cylinder; 302 outer cylinder; 303 air inlet; 304 first air outlet; 305 second air outlet; 306 air outlet; 307 conical air guide plate; 308 porous damping plate; 309 arc transition surface. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention and to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, and the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the scope of implementation of the present invention.

[0025] Referring to the accompanying drawings, the utility model adopts the following technical solution: a buffer type silencer, comprising a housing 1, wherein an air inlet 101 and an air outlet 102 are formed at two ends of the housing 1;

[0026] A first baffle 201 and a second baffle 202 are fixed in the housing 1 from the air inlet 101 to the air outlet 102;

[0027] An inner cylinder 301 and an outer cylinder 302 are fixed between the first baffle plate 201 and the second baffle plate 202. An air inlet 303 is provided on the first baffle plate 201 outside the outer cylinder 302, and the air inlet 303 is communicated with the air inlet 101. At least one first air outlet 304 is provided on the inner wall of the outer cylinder 302 located at the second baffle plate 202. At least one second air outlet 305 is provided on the inner wall of the inner cylinder 301 located at the first baffle plate 201. An air outlet 306 is provided on the second baffle plate 202 located within the range of the inner cylinder 301, and the air outlet 306 is communicated with the exhaust port 102.

[0028] Through the above technical solution, the utility model adopts upper peripheral air intake and central air outlet to achieve smooth exhaust, increase the length of the exhaust channel, and enhance the silencing effect.

[0029] As a preferred embodiment of the above, a conical air guide plate 307 is fixed on the top of the inner cylinder 301 .

[0030] Through the above technical solution, the setting of the conical air guide plate 307 can guide the central airflow to the circumference, thereby increasing the smoothness of the airflow.

[0031] As a preferred embodiment of the above, the air inlet 101, the air outlet 102, the inner tube 301 and the outer tube 302 are coaxial.

[0032] As a preferred embodiment, a porous damping plate 308 is provided at least one between the outer wall of the outer cylinder 302 and the inner wall of the outer shell 1, between the inner wall of the outer cylinder 302 and the outer wall of the inner cylinder 301, and between the inner walls of the inner cylinder 301. The porous damping plate 308 is provided obliquely.

[0033] Through the above technical solution, the provision of the porous damping plate 308 can increase the sound absorption effect.

[0034] As a preferred embodiment, the first air inlet 304 is opened inwardly and obliquely toward the first baffle 201 . The second air inlet 305 is opened inwardly and obliquely toward the first baffle 201 .

[0035] Through the above technical solution, the oblique arrangement of the first air outlet 304 and the second air outlet 305 increases the fluency of exhaust.

[0036] As a preferred embodiment of the above, an arc transition surface 309 is provided between the circumference of the second baffle and the inner wall of the outer shell 1; an inclined surface inclined toward the first baffle and facing inward is provided between the outer cylinder 302 and the inner cylinder 301 and located close to the first baffle.

[0037] Through the above technical solution, the arrangement of the inclined surface and the arc transition surface 309 can make the exhaust smoother.

[0038] Compared with the prior art, the utility model has the following advantages: the utility model has a simple structure, and in the case of an inconvenient length of the outer body, an exhaust channel is increased by setting an inner tube 301 and an outer tube 302, and a circular air inlet 303 and a central air outlet 306 are used to increase the smoothness of the exhaust, and a porous damping plate 308 is provided to absorb sound waves.

[0039] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A buffer type silencer, characterized in that: It comprises a housing (1), wherein two ends of the housing (1) are respectively formed with an air inlet (101) and an air outlet (102); A first baffle (201) and a second baffle (202) are fixed in the housing (1) from the air inlet (101) to the air outlet (102); An inner cylinder (301) and an outer cylinder (302) are fixed between the first baffle plate (201) and the second baffle plate (202); an air inlet (303) is provided on the first baffle plate (201) outside the outer cylinder (302); the air inlet (303) is communicated with the air inlet (101); at least one first air passage (304) is provided on the inner wall of the outer cylinder (302) located at the second baffle plate (202); at least one second air passage (305) is provided on the inner wall of the inner cylinder (301) located at the first baffle plate (201); and an air outlet (306) is provided on the second baffle plate (202) within the range of the inner cylinder (301); the air outlet (306) is communicated with the air outlet (102).

2. The buffer type silencer according to claim 1, characterized in that: A conical air guide plate (307) is fixed to the top of the inner cylinder (301).

3. The buffer type silencer according to claim 1, characterized in that: The air inlet (101), the air outlet (102), the inner tube (301) and the outer tube (302) are coaxial.

4. The buffer type silencer according to claim 1, characterized in that: A porous damping plate (308) is provided at least one place between the outer wall of the outer cylinder (302) and the inner wall of the outer shell (1), between the inner wall of the outer cylinder (302) and the outer wall of the inner cylinder (301), and between the inner walls of the inner cylinder (301).

5. The buffer type silencer according to claim 4, characterized in that: The porous damping plate (308) is arranged obliquely.

6. The buffer type silencer according to claim 1, characterized in that: The first air passage (304) is opened inwardly and obliquely toward the first baffle (201).

7. The buffer type silencer according to claim 1, characterized in that: The second air passage (305) is opened inwardly and obliquely toward the first baffle (201).

8. The buffer type silencer according to claim 1, characterized in that: An arc transition surface (309) is provided between the circumference of the second baffle and the inner wall of the outer shell (1).

9. The buffer type silencer according to claim 1, characterized in that: An inclined surface is provided between the outer cylinder (302) and the inner cylinder (301) and is located close to the first baffle plate. The inclined surface is inclined toward the first baffle plate and faces inward.

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