阅读说明：本技术 一种排气***及其工作方法 (Exhaust silencer and working method thereof ) 是由 左亚飞 左宪民 丁保江 贾天具 付华良 于 2020-08-14 设计创作，主要内容包括：本发明提供了一种排气消声器,外壳体轴向两侧设有进气口、排气口,在外壳体内侧设置有内隔板,把外壳体分为前腔和后腔；在进气口位置处设置有导入管,在排气口位置处设置有导出管；导入管和导出管分别向外壳体内延伸,连接在内隔板处；处于外壳体内的导入管与导出管为中间管；中间管圆周布置有一级消声孔；在中间管外圈布置有同轴消声管消声管圆周布置有二级消声孔；内隔板中,处于消声管与外壳体中间位置的隔板上,设置有通孔；所述的中间管内,在内隔板上固定有发电机；发电机向两端轴向延伸连接有动力轴。本发明的有益效果：本发明中尾气经多级扩散消声、收敛消声,增强消声效果；部分尾气动能被利用,通过发电机转化为清洁电能。(The invention provides an exhaust silencer, wherein an air inlet and an air outlet are arranged on two axial sides of an outer shell, and an inner partition plate is arranged on the inner side of the outer shell and divides the outer shell into a front cavity and a rear cavity; the position of the air inlet is provided with an inlet pipe, and the position of the air outlet is provided with an outlet pipe; the leading-in pipe and the leading-out pipe respectively extend towards the inside of the outer shell and are connected to the position of the inner partition plate; the leading-in pipe and the leading-out pipe in the outer shell are intermediate pipes; the middle pipe is circumferentially provided with a first-stage silencing hole; the outer ring of the middle pipe is provided with a coaxial muffler pipe, and the circumference of the muffler pipe is provided with a secondary muffler hole; in the inner partition plate, a through hole is formed in the partition plate positioned between the silencing pipe and the outer shell; a generator is fixed on the inner clapboard in the middle pipe; the generator is connected with a power shaft in an axially extending manner towards two ends. The invention has the beneficial effects that: the tail gas is subjected to multistage diffusion noise elimination and convergence noise elimination, so that the noise elimination effect is enhanced; part of the kinetic energy of the tail gas is utilized and converted into clean electric energy through the generator.)

1. An exhaust silencer is characterized by comprising an outer shell, an inner partition plate, a generator, a power shaft, a small active fan, a small passive fan, an inlet pipe, an outlet pipe and a silencing pipe; the outer shell is provided with an air inlet and an air outlet at two axial sides, and an inner partition plate is arranged at the inner side of the outer shell to divide the outer shell into a front cavity and a rear cavity;

the position of the air inlet is provided with an inlet pipe, and the position of the air outlet is provided with an outlet pipe; the leading-in pipe and the leading-out pipe respectively extend towards the inside of the outer shell and are connected to the position of the inner partition plate; the leading-in pipe and the leading-out pipe in the outer shell are intermediate pipes; the circumference of the middle pipe is provided with a first-stage silencing hole; a coaxial muffler pipe is arranged on the outer ring of the middle pipe; the circumference of the silencing pipe is provided with a secondary silencing hole; in the inner partition plate, a through hole is formed in the partition plate positioned between the silencing pipe and the outer shell; a generator is fixed on the inner clapboard in the middle pipe; the generator is axially extended towards two ends and is connected with a power shaft, and two ends of the power shaft are provided with a driving small fan and a driven small fan; the leading-in pipe is provided with a passive small fan, and the leading-out pipe is provided with an active small fan.

2. The exhaust muffler according to claim 1 wherein said generator has leads extending therefrom which are connected through the housing to the battery.

3. The exhaust muffler according to claim 1, wherein the intermediate pipe has the edge primary muffling holes positioned inward of the edge secondary muffling holes.

4. The exhaust muffler according to claim 1, wherein a connecting plate is connected to an end of the introduction pipe.

5. A method of operating an exhaust muffler according to claim 1, comprising the steps of:

tail gas enters from the inlet pipe, diffuses and muffles through the primary muffling hole, diffuses and muffles through the secondary muffling hole of the muffling pipe, diffuses and muffles through the through hole of the inner baffle plate, and enters the front cavity; the noise is converged and silenced by a secondary noise elimination hole of the noise elimination pipe, then converged and silenced by a primary noise elimination hole of the leading-out pipe, and discharged into the atmosphere;

meanwhile, the tail gas in the leading-in pipe enables the driven small fan to rotate, the kinetic energy of the tail gas is consumed, and the small generator fixed on the inner partition plate moves to generate electric energy through the power shaft, the electric energy is output outwards through a lead of the small generator, and the driving small fan in the leading-out pipe works to accelerate the discharge of the tail gas in the leading-out pipe, so that the exhaust is smooth.

Technical Field

The invention belongs to the technical field of exhaust mufflers, and particularly belongs to an exhaust muffler and a working method thereof.

Background

Mufflers are a device that prevents sound from propagating while allowing airflow to pass through, and are an important measure for eliminating aerodynamic noise. Mainly on the noise-reducing device (on the flow channel or in the air intake and exhaust systems) of the aerodynamic device.

Noise generated by engine tail gas can cause adverse effects on hearing, physiological functions and the like of people, so that people are irritated and uneasy, and the working efficiency of people is influenced. Long term exposure to noise can cause a person's hearing loss to be extremely harmful to the person's physical and mental health. The efficiency of the engine is greatly influenced if the exhaust resistance of the silencer is large, and meanwhile, the kinetic energy carried by the exhaust cannot be recycled by the conventional silencer, so that the energy is wasted; furthermore, some relatively large exhaust pipelines also have the problems of exhaust noise and waste gas energy source which cannot be recycled.

Disclosure of Invention

The invention provides an exhaust silencer, which aims to achieve the purposes of silencing tail gas, reducing exhaust resistance and recycling tail gas kinetic energy, and meanwhile, the exhaust silencer is easy to disassemble and clean.

Meanwhile, the invention also provides a working method of the exhaust muffler.

The invention provides an exhaust silencer which is characterized by comprising an outer shell, an inner partition plate, a generator, a power shaft, a small active fan, a small passive fan, an inlet pipe, an outlet pipe and a silencing pipe, wherein the inner partition plate is arranged on the outer shell; the outer shell is provided with an air inlet and an air outlet at two axial sides, and an inner partition plate is arranged at the inner side of the outer shell to divide the outer shell into a front cavity and a rear cavity;

the position of the air inlet is provided with an inlet pipe, and the position of the air outlet is provided with an outlet pipe; the leading-in pipe and the leading-out pipe respectively extend towards the inside of the outer shell and are connected to the position of the inner partition plate; the leading-in pipe and the leading-out pipe in the outer shell are intermediate pipes; the circumference of the middle pipe is provided with a first-stage silencing hole; a coaxial muffler pipe is arranged on the outer ring of the middle pipe; the circumference of the silencing pipe is provided with a secondary silencing hole; in the inner partition plate, a through hole is formed in the partition plate positioned between the silencing pipe and the outer shell; a generator is fixed on the inner clapboard in the middle pipe; the generator is axially extended towards two ends and is connected with a power shaft, and two ends of the power shaft are provided with a driving small fan and a driven small fan; the leading-in pipe is provided with a passive small fan, and the leading-out pipe is provided with an active small fan.

Furthermore, a lead is led out of the generator and penetrates through the shell to be connected to the storage battery.

Furthermore, in the middle pipe, the arrangement position of the edge first-stage silencing holes is closer to the inner side than the arrangement position of the edge second-stage silencing holes.

Furthermore, the end part of the leading-in pipe is connected with a connecting plate.

The working method of the exhaust muffler is characterized by comprising the following steps:

tail gas enters from the inlet pipe, diffuses and muffles through the primary muffling hole, diffuses and muffles through the secondary muffling hole of the muffling pipe, diffuses and muffles through the through hole of the inner baffle plate, and enters the front cavity; the noise is converged and silenced by a secondary noise elimination hole of the noise elimination pipe, then converged and silenced by a primary noise elimination hole of the leading-out pipe, and discharged into the atmosphere;

meanwhile, the tail gas in the leading-in pipe enables the driven small fan to rotate, the kinetic energy of the tail gas is consumed, and the small generator fixed on the inner partition plate moves to generate electric energy through the power shaft, the electric energy is output outwards through a lead of the small generator, and the driving small fan in the leading-out pipe works to accelerate the discharge of the tail gas in the leading-out pipe, so that the exhaust is smooth.

The invention has the beneficial effects that:

(1) in the invention, tail gas passes through the primary silencing hole, the secondary silencing hole and the through hole on the inner baffle plate, and is subjected to multistage diffusion silencing and convergence silencing, so that the silencing effect is enhanced;

(2) in the tail gas discharged by the invention, part of the kinetic energy of the tail gas is utilized, converted into clean electric energy through the generator, and input into the storage battery for storage to be recycled; in the kinetic energy of the tail gas, a part of the kinetic energy drives the driven small fan to drive the power shaft, so that the driving small fan rotates to accelerate the smooth exhaust of the tail gas and reduce the exhaust resistance; the invention has simple structure, is easy to unpick, wash and clean, is convenient to remove solid and liquid residual harmful substances in the exhaust muffler and prolongs the service life of the exhaust muffler.

Drawings

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

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

FIG. 3 is a schematic perspective view of the present invention;

fig. 4 is a schematic cross-sectional view of the present invention.

In the figure: A. a front cavity; B. a rear cavity; 1. an outer housing; 2. an inner partition plate; 3. a generator; 4. a power shaft; 5. a small active fan; 6. a passive small fan; 7. an introducing pipe; 8. a delivery pipe; 9. a muffler pipe.

Detailed Description