阅读说明：本技术 一种降噪型多管式排气系统 (Noise-reduction multi-pipe type exhaust system ) 是由 魏端华 陈涛 李羽 曾婷 于 2021-08-05 设计创作，主要内容包括：本发明公开了一种降噪型多管式排气系统,包括呈弯状的前排气管、排气中管、主消音器和呈弯状的排气尾管,前排气管与排气中管连接,主消音器连接排气中管和排气尾管,排气中管上设置有三元催化装置和次消音器,还包括：若干个阻流降温装置,其设置在前排气管上用于给前排气管内的气体降速和降温。本发明中,能起到对气体降速的作用,进而减小噪音,同时能带走大量排气弯管内尾气的热量,进而达到对尾气降温的目的。(The invention discloses a noise reduction type multi-pipe exhaust system, which comprises a bent front exhaust pipe, an exhaust middle pipe, a main silencer and a bent exhaust tail pipe, wherein the front exhaust pipe is connected with the exhaust middle pipe, the main silencer is connected with the exhaust middle pipe and the exhaust tail pipe, and a three-way catalytic device and a secondary silencer are arranged on the exhaust middle pipe, and the noise reduction type multi-pipe exhaust system also comprises: and the plurality of flow blocking and cooling devices are arranged on the front exhaust pipe and are used for reducing the speed and cooling the gas in the front exhaust pipe. According to the invention, the effect of reducing the speed of the gas can be achieved, so that the noise is reduced, and meanwhile, a large amount of heat of the tail gas in the exhaust bent pipe can be taken away, so that the purpose of cooling the tail gas is achieved.)

1. The utility model provides a type of making an uproar multitubular exhaust system falls, is including being curved preceding exhaust pipe (1), well (2) of exhaust, main muffler (3) and being curved tail pipe (4), preceding exhaust pipe (1) with well (2) of exhaust are connected, main muffler (3) are connected well (2) and tail pipe (4) in the exhaust, be provided with three way catalytic device (5) and time muffler (6) on well (2) of exhaust, its characterized in that still includes: a plurality of flow-resisting and temperature-reducing devices which are arranged on the front exhaust pipe (1) and used for reducing the speed and the temperature of the gas in the front exhaust pipe (1), the choked flow cooling device comprises two outer pipes (7), two inner pipes (8), a rotary drum (9) with a hollow interior, a plurality of fan blades (10) with a hollow interior, an air inlet pipe (11) and an air outlet pipe (12), wherein the two outer pipes (7) are oppositely arranged on the front exhaust pipe (1), the inner tubes (8) communicated with the interior of the rotary drum (9) are rotatably arranged on two sides of the rotary drum, one end of the inner pipe (8) is arranged in the outer pipe (7) and can rotate relative to the outer pipe (7), a plurality of fan blades (10) are arranged on the rotary drum (9) and are communicated with the interior of the rotary drum, the air inlet pipe (11) and the air outlet pipe (12) are respectively arranged on one of the inner pipes (8) and communicated with the inside of the inner pipe.

2. A noise-reducing multi-duct exhaust system according to claim 1, wherein: the inner pipe (8) can move back and forth on the rotary drum (9), and the air inlet pipe (11) and the air outlet pipe (12) are detachably connected with the inner pipe (8).

3. A noise-reducing multi-duct exhaust system according to claim 2, wherein: the air inlet pipe (11) and the air outlet pipe (12) are in threaded connection with the outer pipe (7).

4. A noise-reducing multi-duct exhaust system according to claim 1, wherein: the air inlet end of the air inlet pipe (11) is trumpet-shaped.

5. A noise-reducing multi-duct exhaust system according to claim 1, wherein: a filter screen (111) is detachably arranged at the air inlet end of the air inlet pipe (11).

6. A noise-reducing multi-duct exhaust system according to claim 1, wherein: the air outlet end of the tail pipe (4) is detachably provided with a blocking net (41).

7. A noise-reducing multi-duct exhaust system according to claim 1, wherein: the silencer is characterized by further comprising telescopic rods (13) arranged between the adjacent main silencers (3).

Technical Field

The invention relates to the technical field of exhaust pipes, in particular to a noise reduction type multi-pipe exhaust system.

Background

The automobile exhaust system mainly discharges the exhaust gas discharged by the working of an engine, and simultaneously reduces the pollution and the noise of the discharged exhaust gas. The automobile exhaust system is mainly used for motor vehicles such as light vehicles, mini vehicles, passenger cars, motorcycles and the like. An exhaust system of an automobile refers to a system for collecting and discharging exhaust gas, and generally comprises an exhaust manifold, an exhaust pipe, a catalytic converter, an exhaust temperature sensor, an automobile muffler, a tail pipe, and the like. Most of exhaust pipes in the existing exhaust system are bent and have certain heat dissipation and silencing functions, but when the exhaust volume of an engine is large, the generated heat and noise are large, a plurality of exhaust bent pipes are installed to increase the exhaust volume, but the cooling effect is not good, and a silencer is arranged in the exhaust system, so that noise cannot be reduced well, and the defects exist.

Disclosure of Invention

The present invention is directed to solve the above problems, and an object of the present invention is to provide a noise reduction type multi-pipe exhaust system.

The technical scheme of the invention is as follows: the utility model provides a type of making an uproar multitubular exhaust system falls, is managed, main muffler and is curved tail pipe in preceding exhaust pipe, the exhaust pipe that is curved, preceding exhaust pipe with manage in the exhaust and connect, main muffler is connected pipe and tail pipe in the exhaust, be provided with three way catalytic device and secondary muffler in the exhaust on the pipe, still include: the flow-resisting and temperature-reducing device comprises two outer pipes, two inner pipes, a rotary drum with a hollow inner part, a plurality of fan blades with hollow inner parts, an air inlet pipe and an air outlet pipe, wherein the two outer pipes are oppositely arranged on the front exhaust pipe, the inner pipes communicated with the inner parts of the rotary drum are rotatably arranged on two sides of the rotary drum, one end of each inner pipe is arranged in the outer pipe and can rotate relative to the outer pipe, the fan blades are arranged on the rotary drum and are communicated with the inner parts of the rotary drum, and the air inlet pipe and the air outlet pipe are respectively arranged on one of the inner pipes and are communicated with the inner parts of the inner pipes.

Preferably, the inner tube is movable back and forth on the drum, and the air inlet tube and the air outlet tube are detachably connected to the inner tube.

Preferably, the air inlet pipe and the air outlet pipe are in threaded connection with the outer pipe.

Preferably, the air inlet end of the air inlet pipe is horn-shaped.

Preferably, the air inlet end of the air inlet pipe is detachably provided with a filter screen.

Preferably, the air outlet end of the tail pipe is detachably provided with a barrier net.

Preferably, the telescopic rod is arranged between the adjacent main silencers.

The invention has the beneficial effects that: in the invention, the air inlet end of the air inlet pipe is the same as the running direction of an automobile, the air outlet end of the air outlet pipe is opposite to the running direction of the automobile, tail gas generated by the air cylinder flows into the front exhaust pipe in the running process of the automobile, the fan blades are driven to rotate by the force of air blowing, the effect of reducing the speed of the air is achieved, the noise is further reduced, meanwhile, in the fast running process of the automobile, the air quickly enters the air inlet pipe to form airflow, the air in the air inlet pipe flows into the interior of the rotary drum and the interior of the fan blades through the inner pipe, and the flowing air is discharged from the air outlet pipe and simultaneously takes away a large amount of heat of the tail gas in the exhaust elbow, so that the purpose of cooling the tail gas is achieved.

Drawings

FIG. 1 is a top plan view of the overall structure of the preferred embodiment of the present invention;

FIG. 2 is a cross-sectional view of the connection of the front exhaust duct to the flow-obstructing and temperature-reducing device in the preferred embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a perspective view of a drum in a preferred embodiment of the invention;

FIG. 5 is a schematic view of an intake manifold in a preferred embodiment of the present invention;

fig. 6 is a cross-sectional view of a tailpipe in a preferred embodiment of the invention.

Reference numerals: the device comprises a front exhaust pipe 1, an exhaust middle pipe 2, a main silencer 3, an exhaust tail pipe 4, a barrier net 41, a three-way catalytic device 5, a secondary silencer 6, an outer pipe 7, an inner pipe 8, a rotary drum 9, a through groove 91, a through hole 92, a placing groove 93, fan blades 10, an air inlet pipe 11, a filter screen 111, an air outlet pipe 12 and a telescopic rod 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 6, a type of making an uproar multitubular exhaust system falls, is including being curved preceding exhaust pipe 1, well pipe 2 in the exhaust, main muffler 3 and being curved tail pipe 4, preceding exhaust pipe 1 with well pipe 2 in the exhaust be connected, main muffler 3 is connected well pipe 2 in the exhaust and tail pipe 4, be provided with three way catalytic unit 5 and secondary muffler 6 in the pipe 2 in the exhaust, still include: a plurality of choked flow heat sink, it sets up and is used for giving the gaseous deceleration and the cooling in the preceding blast pipe 1 on preceding blast pipe 1, choked flow heat sink includes two outer tubes 7, two inner tubes 8, inside hollow rotary drum 9, the inside hollow flabellum 10 of a plurality of, intake pipe 11 and outlet duct 12, two outer tube 7 oppositions set up on preceding blast pipe 1, rotary drum 9 both sides rotationally are provided with rather than inside communicating inner tube 8, inner tube 8 one end sets up in outer tube 7 and can rotate relative to outer tube 7, a plurality of flabellum 10 sets up on rotary drum 9 and communicates with each other rather than inside, intake pipe 11 and outlet duct 12 respectively set up on one of them inner tube 8 and communicate with each other rather than inside. In the invention, the air inlet end of the air inlet pipe 11 is the same as the running direction of an automobile, the air outlet end of the air outlet pipe 12 is opposite to the running direction of the automobile, tail gas generated by an air cylinder flows into the front exhaust pipe 1 in the running process of the automobile, the fan blades 10 are driven by the force of air blowing to rotate the rotary drum 9, the speed of the air is reduced, and further the noise is reduced, meanwhile, in the fast running process of the automobile, air quickly enters the air inlet pipe 11 to form airflow, the air in the air inlet pipe 11 flows into the interior of the rotary drum 9 and the interior of the fan blades 10 through the inner pipe 8, and a large amount of heat of the tail gas in the air inlet pipe 1 is taken away while the flowing air is discharged from the air outlet pipe 12, so that the purpose of cooling the tail gas is achieved. Specifically, the rotary drum 9 is provided with a plurality of through grooves 91, the through grooves 91 are communicated with the inside of the rotary drum 9, and the inside of the fan blades 10 is communicated with the through grooves 91.

As a preferred embodiment of the present invention, it may also have the following additional technical features:

in this embodiment, the inner tube 8 is movable back and forth on the drum 9, and the inlet pipe 11 and the outlet pipe 12 are detachably connected to the inner tube 8. Specifically, 9 both ends of rotary drum respectively are provided with through-hole 92 and standing groove 93, through-hole 92 communicates with each other with inner tube 8, inner tube 8 can be in standing groove 93 round trip movement, intake pipe 11 and outlet duct 12 can dismantle with inner tube 8 and be connected simultaneously, and rotary drum 9 one side and 7 butts of outer tube, after being connected intake pipe 11 and outlet duct 12 with inner tube 8, pulling inner tube 8 makes its cover establish in outer tube 7, fix intake pipe 11 and outlet duct 12 on the car simultaneously, and then fix rotary drum 9, design easy to assemble like this and dismantle.

In this embodiment, the inlet pipe 11 and the outlet pipe 12 are screwed to the outer pipe 7.

In this embodiment, the inlet end of the inlet pipe 11 is trumpet-shaped, so that a large amount of air can flow into the inlet pipe 11 to form an air flow.

In this embodiment, the filter screen 111 is detachably disposed at the air inlet end of the air inlet pipe 11, so as to prevent the air inlet pipe 11 from being blocked due to the external object entering the air inlet pipe 11.

In this embodiment, the air outlet end of the tail pipe 4 is detachably provided with a barrier 41 to prevent foreign objects from entering the tail pipe 4 to block the tail pipe 4.

In this embodiment, still include telescopic link 13, it sets up between adjacent main muffler 3, fixed two main mufflers 3, and can adjust the mounted position of main muffler 3 on the car. Specifically, the telescopic rod 13 comprises an inner rod and an outer tube, and one end of the inner rod is connected with the inside of the outer tube through threads.

It is to be noted that 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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.