CN201062534Y

CN201062534Y - Speed-increasing exhaust conduit

Info

Publication number: CN201062534Y
Application number: CNU2007200531307U
Authority: CN
Inventors: 敖忠坚
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-22
Filing date: 2007-06-22
Publication date: 2008-05-21
Anticipated expiration: 2017-06-22

Abstract

The utility model relates to the technology field of an exhaust pipe in a silencer, in particular to a speed increasing exhaust pipe. A plurality of holes are arranged on the circumference surface of the exhaust pipe, the hole adopts a deplanate shape or a semiellipse shape, the long edge of the hole is vertical to the central axial line of the exhaust pipe, a flow guiding oblique plane inclining inward the exhaust pipe is formed on one side by all the holes along the exhausting direction of the exhaust pipe, the holes are arranged in a spiral linear way along the circumference surface of the exhaust pipe, because of the guiding of the holes and the flow guiding oblique planes, air flow flows into the exhaust pipe in a lamellar way or a sheet-shaped way, the speed of the air flow is increased, and therefore, the exhausting speed is increased; the exhaust pipe matched with the silencer has silencing effect, the holes with special structures arranged on the exhaust pipe can increase the silencing effect, the sound wave is further shielded, the volume of the sound wave is reduced, the sound isolation effect is further enhanced, and the silencing effect of the exhaust pipe is improved. The utility model has the advantages that the structure is simple, the exhausting speed of the exhaust pipe is increased, the output horsepower of the engine is increased, and the silencing effect is enhanced.

Description

A kind of augment tube

Technical field:

The utility model relates to the outlet pipe technical field in the silencing apparatus, refers in particular to a kind of augment tube.

Background technique:

Silencing apparatus divides dissipative muffler, three kinds of reactive muffler and impedance complex formula silencing apparatuss: dissipative muffler is to utilize sound-absorbing porous material, be arranged in the pipeline in a certain way, when air communication is crossed dissipative muffler, sound wave just causes the air in the sound-absorbing material hole and the vibrations of fiber fines, because friction and viscous resistance, acoustic energy becomes heat energy and is absorbed, thereby play the noise elimination effect, this silencing apparatus is a sound absorption of utilizing muffler material or sound absorption structure, make along the noise of pipe transmmision and decay with distance, thereby reach the noise elimination purpose, this type of silencing apparatus has good noise elimination effect to high-frequency noise, and the low frequency acoustic attenuation performance is relatively poor; Reactive muffler is to utilize difform pipeline and resonant cavity to carry out suitable combination, reflection and interference effect that the acoustic impedance that causes by means of the variation of pipeline section and shape does not match and produced, this silencing apparatus is to connect resonant cavity by means of the unexpected expansion of pipeline section or contraction or side, make along the sound wave of some frequency of pipe transmmision and reflect back to Sounnd source direction in sudden change place, thereby reach the noise elimination purpose, this kind silencing apparatus relatively is applicable to eliminates the Low Medium Frequency noise, and relatively poor to the noise elimination effect of high-frequency noise; Impedance complex formula silencing apparatus is that the noise-cancelling theory with dissipative muffler and reactive muffler combines by appropriate configuration, has both acoustic characteristicses concurrently, and this type of silencing apparatus obtains to eliminate the noise preferably effect in basic, normal, high broadness is on the point of the rate scope.Be provided with an outlet pipe in above-mentioned three kinds of silencing apparatuss, offer circular hole on this outlet pipe circumferential surface, this outlet pipe is used for exhaust, outlet pipe cooperates silencing apparatus to play the noise elimination effect simultaneously, but because its structural limitations, this outlet pipe exhaust velocity is slow, and therefore the output of engine horsepower also be restricted, and its noise elimination effect is still not enough to some extent, and the noise elimination effect still remains to be improved.

The model utility content:

The purpose of this utility model is to provide a kind of augment tube at the deficiencies in the prior art, and the hole on it is improved, and has increased the exhaust velocity of outlet pipe, increases the horsepower output of engine, has improved the noise elimination effect simultaneously.

For achieving the above object, the utility model is achieved through the following technical solutions: outlet pipe is the pipe of a hollow, offer a plurality of holes on the circumferential surface of this outlet pipe, hole on the described outlet pipe is a flat pattern, the long limit in this hole is perpendicular to the medial axis of outlet pipe, each hole all forms the water conservancy diversion inclined-plane in the side along the outlet pipe discharge directions, and this water conservancy diversion inclined-plane tilts in outlet pipe.

Described hole is along the circumferential surface of outlet pipe linear array in the shape of a spiral.

Offer a plurality of holes on the circumferential surface of outlet pipe of the present utility model, this hole is flat pattern or half-oval shaped, the long limit in this hole is perpendicular to the medial axis of outlet pipe, each hole all forms the water conservancy diversion inclined-plane that tilts in outlet pipe in the side along the outlet pipe discharge directions, the hole is along the circumferential surface of outlet pipe linear array in the shape of a spiral, because the guiding on hole and water conservancy diversion inclined-plane thereof, air-flow is laminar airflow or the sheet air-flow tilts to flow in the outlet pipe, add the compressible mobile characteristic of gas, after in air-flow flows into outlet pipe, airspeed is accelerated, and the air-flow bulk velocity in the outlet pipe is increased, thereby accelerate exhaust velocity; Simultaneously, outlet pipe cooperates silencing apparatus to play the noise elimination effect, has the noise elimination effect that the hole of special construction can be strengthened on the outlet pipe, further shields sound wave, and the volume of reduction sound wave is further strengthened the effect of its sound insulation, improves the noise elimination effect of outlet pipe.In sum, the utility model is simple in structure, and the outlet pipe exhaust velocity is accelerated, and has increased the shaft horsepower of engine, has strengthened the noise elimination effect.

Description of drawings:

Accompanying drawing 1 is the structural representation of outlet pipe 1 of the present utility model;

Accompanying drawing 2 is user mode figure of the present utility model.

Embodiment:

Embodiment sees accompanying

drawing

1,2, described outlet pipe 1 is the pipe of a hollow, offer a plurality of holes 2 on the circumferential surface of this outlet pipe 1, hole 2 on this outlet pipe 1 is a flat pattern, the long limit in this hole 2 is perpendicular to the medial axis of outlet pipe 1, each hole 2 all forms water conservancy diversion inclined-plane 3 in the side along outlet pipe 1 discharge directions, and this water conservancy diversion inclined-plane 3 tilts in outlet pipe 1.

Described hole 2 is along the circumferential surface of outlet pipe 1 linear array in the shape of a spiral.

Hole 2 is because moulding water conservancy diversion inclined-plane 3 on the outlet pipe 1 of the present utility model, add the spiral linear array of each hole at circumferential surface, in the outlet pipe exhaust process, the air-flow that refluxes in silencing apparatus is in each hole is backflowed into outlet pipe 1 time, because the guiding on hole 2 and water conservancy diversion inclined-plane 3 thereof, air-flow are laminar airflow or the sheet air-flow tilts to flow in the outlet pipe 1; Simultaneously, because the compressible mobile characteristic of gas, air-flow speed after flowing into this outlet pipe 1 can be accelerated, after promptly in air-flow flows into outlet pipe 1, the speed of the air-flow in the outlet pipe 1 is increased, thereby accelerate the whole exhaust velocity of outlet pipe 1, reach the purpose that increases the engine shaft horsepower.In addition, outlet pipe 1 cooperates silencing apparatus to play the noise elimination effect, has the noise elimination effect that the hole 2 of special construction can be strengthened on the outlet pipe 1, further shields sound wave, and the volume of reduction sound wave is further strengthened the effect of its sound insulation, improves the noise elimination effect of outlet pipe 1.

The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1. augment tube, outlet pipe (1) is the pipe of a hollow, offer a plurality of holes (2) on the circumferential surface of this outlet pipe (1), it is characterized in that: the hole (2) on the described outlet pipe (1) is flat pattern, the long limit in this hole (2) is perpendicular to the medial axis of outlet pipe (1), each hole (2) all forms water conservancy diversion inclined-plane (3) in the side along outlet pipe (1) discharge directions, and this water conservancy diversion inclined-plane (3) tilts in outlet pipe (1).

2. a kind of augment tube according to claim 1 (1) is characterized in that: described hole (2) are along the circumferential surface of outlet pipe (1) linear array in the shape of a spiral.