CN217926025U

CN217926025U - Silencer for small double-cylinder gasoline mute variable frequency generator set

Info

Publication number: CN217926025U
Application number: CN202222363662.8U
Authority: CN
Inventors: 邵利军; 谢安源; 刘国伟; 唐曹; 秦尚勇; 甘远洪
Original assignee: Chongqing Ampride Power & Machinery Co ltd
Current assignee: Chongqing Ampride Power & Machinery Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2022-11-29
Anticipated expiration: 2032-09-06

Abstract

The utility model discloses a silencer for a small double-cylinder gasoline mute variable frequency generator set, which comprises an air inlet pipe and an air outlet pipe which are arranged in the width direction of a silencer shell in a back way, wherein the two air inlet pipes are a first air inlet pipe and a second air inlet pipe which are respectively arranged at the two ends of the length direction of the shell; and tail gas is discharged from the exhaust pipe after passing through at least six expansion chambers in sequence, and the expansion chambers are connected through silencing pipes to be silenced. By adopting the utility model, the waste gas of the engine enters the interior of the silencer through the air inlet pipe, and the air flow is discharged from the exhaust pipe after passing through the expansion chamber in sequence, thereby achieving the exhaust effect; at least six expansion chambers are arranged to increase the cavity through which the airflow flows so as to improve the silencing effect; different expansion chambers are connected through a silencing pipe, so that the resistance of airflow entering each expansion chamber is increased, and the effect of gradual silencing is achieved.

Description

Silencer for small double-cylinder gasoline mute variable frequency generator set

Technical Field

The utility model relates to a silencer, especially a silencer that is used for small-size double-cylinder petrol silence variable frequency generator group.

Background

The noise that small-size double-cylinder petrol silence variable frequency generator set during operation produced is great, therefore needs carry out amortization to exhaust waste gas, and petrol variable frequency generator set's silencer in the past can't satisfy the amortization demand of this kind of model, has the not good problem of noise cancelling effect.

Disclosure of Invention

The utility model aims to provide an: aiming at the problem of poor silencing effect of a silencer of a small and medium double-cylinder gasoline silencing frequency conversion generating set in the prior art, the silencer for the small double-cylinder gasoline silencing frequency conversion generating set is good in silencing effect.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a silencer for a small double-cylinder gasoline mute variable frequency generator set comprises an air inlet pipe and an air outlet pipe which are arranged in the width direction of a silencer shell in a back-to-back mode, wherein the two air inlet pipes are a first air inlet pipe and a second air inlet pipe which are respectively arranged at the two ends of the shell in the length direction; and tail gas is discharged from the exhaust pipe after passing through at least six expansion chambers in sequence, and the expansion chambers are connected through silencing pipes and are silenced.

By adopting the technical scheme, the exhaust gas of the engine enters the silencer through the air inlet pipe, and the air flow is discharged from the exhaust pipe after passing through the expansion chamber in sequence, so that the exhaust effect is achieved; at least six expansion chambers are arranged to increase the cavity through which the airflow flows so as to improve the silencing effect; the different expansion chambers are connected through the silencing pipe, so that the resistance of airflow entering each expansion chamber is increased, and the effect of gradual silencing is achieved; in addition, a partition plate can be arranged at the joint of the expansion chamber and the silencing pipe to separate and divide the expansion chamber and the silencing pipe so as to improve the silencing effect.

Further, the first air inlet pipe is connected to the first expansion chamber, and the second air inlet pipe is connected to the second expansion chamber; the first expansion chamber and the second expansion chamber are respectively arranged at two ends of the first silencing pipe and are communicated through the first silencing pipe so as to guide the tail gas into the third expansion chamber. The two air inlet pipes are arranged, so that the effect of shunting the tail gas is achieved, and the tail gas is better subjected to silencing treatment; leading the tail gas into the silencer through two gas inlet pipes, leading the tail gas of the two rear parts into the first expansion chamber and the second expansion chamber respectively, and leading the tail gas into the third expansion chamber through the first silencing pipe to be subjected to secondary silencing treatment.

Furthermore, the first silencing tube is long and arranged along the length direction of the shell, and the third expansion chamber is positioned between the first expansion chamber and the second expansion chamber. The first silencing pipe is convenient to be simultaneously connected with the first expansion chamber and the second expansion chamber so as to converge and treat the tail gas.

Further, the third expansion chamber is connected to the fourth expansion chamber through a second muffler pipe, which is provided along the width direction of the housing; the fourth expansion chamber is located in the middle of the housing.

Further, the fourth extension chamber is connected to a fifth extension chamber through a third sound-deadening tube, the fifth extension chamber being located on a side of the housing in the longitudinal direction away from the exhaust tube. More expansion chambers are convenient to arrange, so that the tail gas can flow through the more expansion chambers to be subjected to silencing treatment.

Furthermore, a plurality of vent holes are formed in the pipe walls of the first silencing pipe, the second silencing pipe and the third silencing pipe. The first silencing pipe, the second silencing pipe and the third silencing pipe are common silencing pipes.

Further, the fifth expansion chamber is connected to the sixth expansion chamber by a fourth muffler pipe which is provided along the length direction of the housing and is close to the inner wall of the housing.

Furthermore, the fourth silencing pipe is a composite silencing pipe provided with silencing holes, heat insulation cotton and sleeve parts. The fourth silencing pipe is a composite silencing pipe, and the silencing holes are closed and additionally arranged, so that the silencing effect is better, and the noise is filtered more thoroughly; in addition, only one composite silencing pipe is used, so that the silencing effect is ensured, and meanwhile, the manufacturing cost is controlled.

Furthermore, the exhaust pipe extends into the sixth expansion chamber, and the extending end is provided with a plurality of muffling holes.

Further, both intake pipes are connected to the cylinder head of the engine.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the waste gas of the engine enters the interior of the silencer through the air inlet pipe, and the air flow is discharged from the exhaust pipe after passing through the expansion chamber in sequence, so that the exhaust effect is achieved; at least six expansion chambers are arranged to increase the cavity through which the airflow flows so as to improve the silencing effect; the different expansion chambers are connected through the silencing pipe, so that the resistance of airflow entering each expansion chamber is increased, and the effect of gradual silencing is achieved; in addition, a partition plate can be arranged at the joint of the expansion chamber and the silencing pipe to separate and divide the expansion chamber and the silencing pipe so as to improve the silencing effect.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a cross-sectional view of a muffler for a small double-cylinder gasoline mute variable frequency generator set.

Fig. 2 shows the whole schematic diagram of the muffler for the small-sized double-cylinder gasoline mute variable frequency generator set.

Wherein the figures include the following reference numerals:

10 a shell; 20 an exhaust pipe;

31 a first intake pipe; 32 a second intake pipe;

41 a first expansion chamber; 42 a second expansion chamber; 43 a third expansion chamber; 44 a fourth expansion chamber; 45 a fifth expansion chamber; 46 a sixth expansion chamber;

51 a first silencer duct; 52 a second muffler pipe; 53 third muffler pipe; 54 fourth muffler pipe.

Detailed Description

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The external parts of the silencer are all made of antirust materials, and the surfaces of the silencer are not required to be subjected to baking finish treatment; the device is a special mute muffler for the double-cylinder engine, and has the advantages of simple appearance, good muffling effect, easy installation and the like; the silencer adopts silencing cotton, multi-chamber circulation, multi-stage silencing pipe treatment and composite silencing pipe advanced treatment inside, thereby achieving better silencing effect.

Referring to fig. 1 and 2, a muffler for a small double-cylinder gasoline mute variable frequency generator set comprises an inlet pipe and an outlet pipe 20 which are arranged oppositely in the width direction of a muffler shell 10, wherein the inlet pipe comprises a first inlet pipe 31 and a second inlet pipe 32 which are respectively arranged at two ends of the length direction of the shell 10; the exhaust gas passes through at least six expansion chambers in sequence and is discharged from the exhaust pipe 20, and the expansion chambers are connected through silencing pipes to be silenced.

By adopting the technical scheme, the exhaust gas of the engine enters the silencer through the air inlet pipe, and the air flow is discharged from the exhaust pipe 20 after passing through the expansion chamber in sequence, so that the exhaust effect is achieved; at least six expansion chambers are arranged to increase the cavity through which the airflow flows so as to improve the silencing effect; the different expansion chambers are connected through the silencing pipe, so that the resistance of airflow entering each expansion chamber is increased, and the effect of gradual silencing is achieved; in addition, a partition plate can be arranged at the joint of the expansion chamber and the silencing pipe to separate and divide the expansion chamber and the silencing pipe so as to improve the silencing effect.

Further, the first intake pipe 31 is connected to the first expansion chamber 41, and the second intake pipe 32 is connected to the second expansion chamber 42; the first extension chamber 41 and the second extension chamber 42 are provided at both ends of the first muffler pipe 51, and communicate with each other through the first muffler pipe 51 to introduce the exhaust gas into the third extension chamber 43. The two air inlet pipes are arranged, so that the effect of shunting the tail gas is achieved, and the tail gas is better subjected to silencing treatment; the exhaust gas is introduced into the muffler through two inlet pipes, and the two latter portions of the exhaust gas enter the first extension chamber 41 and the second extension chamber 42, respectively, and are introduced into the third extension chamber 43 through the first muffler pipe 51 to be again muffled.

Further, the first muffler pipe 51 is elongated and provided along the longitudinal direction of the housing 10, and the third extension chamber 43 is located between the first extension chamber 41 and the second extension chamber 42. The first silencing pipe 51 is convenient to connect the first expansion chamber 41 and the second expansion chamber 42 at the same time so as to combine and treat the tail gas.

Further, the third extension chamber 43 is connected to the fourth extension chamber 44 through a second sound-deadening tube 52, the second sound-deadening tube 52 being provided in the width direction of the housing 10; the fourth expansion chamber 44 is located at the middle of the housing 10.

Further, the fourth extension chamber 44 is connected to the fifth extension chamber 45 through the third muffler pipe 53, and the fifth extension chamber 45 is located on the side of the housing 10 away from the exhaust pipe 20 in the longitudinal direction. More expansion chambers are convenient to arrange, so that the tail gas can flow through the more expansion chambers to be subjected to silencing treatment.

Furthermore, the first silencing pipe 51, the second silencing pipe 52 and the third silencing pipe 53 are all provided with a plurality of vent holes on the pipe walls. The first, second, and third muffling pipes 51, 52, and 53 are ordinary muffling pipes.

Further, the fifth extension chamber 45 is connected to the sixth extension chamber 46 through a fourth muffler pipe 54, and the fourth muffler pipe 54 is disposed along the length direction of the housing 10 and near the inner wall of the housing 10.

Further, the fourth muffling pipe 54 is a composite muffling pipe provided with muffling holes, heat insulation cotton, and sleeve parts. The fourth silencing pipe 54 is a composite silencing pipe, and the silencing holes are closed and additionally arranged, so that the silencing effect is better, and the noise is filtered more thoroughly; in addition, only one composite silencing pipe is used, so that the silencing effect is ensured, and meanwhile, the manufacturing cost is controlled.

Further, the exhaust pipe 20 extends into the sixth expansion chamber 46, and the extending end is provided with a plurality of muffling holes.

Further, both intake pipes are connected to the cylinder head of the engine.

The scope of the present invention is defined not by the above-described embodiments but by the appended claims and equivalents thereof.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A silencer for a small double-cylinder gasoline mute variable frequency generator set is characterized by comprising two air inlet pipes and two air outlet pipes (20) which are arranged in the width direction of a silencer shell (10) in a back mode, wherein the two air inlet pipes are a first air inlet pipe (31) and a second air inlet pipe (32) which are respectively arranged at the two ends of the length direction of the shell (10); and tail gas is discharged from the exhaust pipe (20) after passing through at least six expansion chambers in sequence, and the expansion chambers are connected through silencing pipes to be silenced.

2. The muffler for a small twin-cylinder gasoline silence variable frequency generator set according to claim 1, characterized in that the first intake pipe (31) is connected to a first expansion chamber (41), and the second intake pipe (32) is connected to a second expansion chamber (42); the first expansion chamber (41) and the second expansion chamber (42) are respectively arranged at two ends of the first silencing pipe (51), and are communicated through the first silencing pipe (51) to guide tail gas into the third expansion chamber (43).

3. The muffler for a small two-cylinder gasoline silence variable frequency generator set according to claim 2, characterized in that the first muffler pipe (51) is long and arranged along the length direction of the housing (10), and the third expansion chamber (43) is located between the first expansion chamber (41) and the second expansion chamber (42).

4. The muffler for a small twin-tub gasoline silent frequency conversion genset of claim 2, characterized in that the third extension chamber (43) is connected to the fourth extension chamber (44) by a second muffler pipe (52), the second muffler pipe (52) being disposed along the width direction of the housing (10); the fourth expansion chamber (44) is located in the middle of the housing (10).

5. The muffler for a small double-cylinder gasoline silence variable frequency generator set according to claim 4, characterized in that the fourth expansion chamber (44) is connected to a fifth expansion chamber (45) through a third sound-absorbing pipe (53), and the fifth expansion chamber (45) is located at the side of the housing (10) far away from the exhaust pipe (20) in the length direction.

6. The muffler for the small double-cylinder gasoline mute frequency conversion generator set according to claim 5, wherein a plurality of vent holes are formed in the pipe walls of the first silencing pipe (51), the second silencing pipe (52) and the third silencing pipe (53).

7. The muffler for a small double-cylinder gasoline silent frequency conversion generator set according to claim 5, characterized in that the fifth expansion chamber (45) is connected to the sixth expansion chamber (46) through a fourth silencing pipe (54), and the fourth silencing pipe (54) is arranged along the length direction of the shell (10) and close to the inner wall of the shell (10).

8. The muffler for the small double-cylinder gasoline mute frequency conversion generating set according to claim 7, wherein the fourth muffling pipe (54) is a composite muffling pipe provided with muffling holes, heat insulation cotton and sleeve parts.

9. The muffler for the small double-cylinder gasoline mute variable frequency generator set according to claim 7, wherein the exhaust pipe (20) extends into the sixth expansion chamber (46), and the extending end is provided with a plurality of muffling holes.

10. The muffler for the small double-cylinder gasoline silence variable frequency generator set according to claim 1, characterized in that, both of the intake pipes are connected to the exhaust cylinder head of the engine.