Generator silencer

Abstract

The utility model provides a generator silencer which comprises a shell, an air inlet pipe and an air outlet pipe are arranged on the two sides of the shell respectively, a first cavity, a second cavity and a third cavity are sequentially formed in the shell, a first connecting pipe is arranged between the first cavity and the second cavity, and a second connecting pipe is arranged between the first cavity and the third cavity. The air inlet pipe is communicated with the second cavity, the air outlet pipe is communicated with the third cavity, and the first cavity, the second cavity and the third cavity are arranged and communicated through the first connecting pipe and the second connecting pipe, so that air flow of the generator flows back and forth, the air flow speed is reduced, turbulence noise is weakened, and the silencing effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to a silencing device, and more particularly, to a generator silencer. Background Technology

[0002] A generator muffler is a tubular silencer that is typically installed at the generator's exhaust port. During operation, the generator emits high-speed gas, which generates noise. A generator muffler can reduce the noise from the generator's exhaust port.

[0003] Currently, Chinese patent CN211343080U discloses a combined muffler for diesel generator sets, including a housing, an air intake pipe fixedly installed on the left side of the housing, an air outlet pipe fixedly installed on the right side of the housing, a muffler pipe fixedly installed at the right end of the top of the air intake pipe, and a muffler chamber fixedly installed at the right end of the muffler pipe.

[0004] The aforementioned patent still has shortcomings. The internal structure of the silencer is relatively simple, and the sound wave energy is not fully consumed when the gas passes through the silencer pipe, resulting in an unsatisfactory silencer effect. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a generator muffler that has the advantage of good noise reduction effect.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a generator muffler, including a housing, an air inlet pipe and an air outlet pipe respectively provided on both sides of the housing, a first cavity, a second cavity and a third cavity formed sequentially inside the housing, a connecting pipe one provided between the first cavity and the second cavity, a connecting pipe two provided between the first cavity and the third cavity, the air inlet pipe communicating with the second cavity, and the air outlet pipe communicating with the third cavity.

[0007] Preferably, the air intake pipe has a plurality of air holes arranged in a ring array, the air holes being located at the side end of the air intake pipe and communicating with the cavity.

[0008] Preferably, a fourth cavity is provided between the first cavity and the second cavity, and the air inlet pipe is also provided with a second air hole, which is connected to the fourth cavity.

[0009] Preferably, both the second cavity and the fourth cavity are provided with sound insulation cotton, which is sleeved on the second connecting pipe.

[0010] Preferably, the outer casing is further provided with a silencer pipe, a mounting bracket, a mounting bracket, a partition, and a cover plate. The silencer pipe and the mounting bracket form a first cavity, the mounting bracket and the mounting bracket form a fourth cavity, the mounting bracket and the partition form a second cavity, the partition and the cover plate form a third cavity, and the cover plate is fixed to the outer casing by threads.

[0011] Preferably, the air intake pipe is fixed to the muffler pipe by screws, the air outlet pipe is fixedly mounted on the cover plate, and a bushing is also provided on the muffler pipe, which is located between the muffler pipe and the mounting bracket.

[0012] Preferably, the first connecting pipe is fixedly mounted on the second mounting bracket, the second connecting pipe is fixedly mounted on the first mounting bracket, the second connecting pipe passes through the partition and extends into the third cavity, and the tail end of the air outlet pipe also extends into the third cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up a first cavity, a second cavity, and a third cavity, and connecting each cavity through connecting pipe one and connecting pipe two, the airflow of the generator flows back and forth, reducing the airflow velocity, weakening turbulence noise, and ensuring the noise reduction effect;

[0015] 2. By setting vent one and vent two, sound waves are reflected and interfered with, so that the sound waves are reflected multiple times inside and interfere with each other to cancel each other out. By setting sound insulation cotton, the sound energy of high-frequency turbulent noise is absorbed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment;

[0017] Figure 2 This is the left view of an embodiment;

[0018] Figure 3 for Figure 2 AA section view;

[0019] Figure 4 This is an exploded view of an embodiment.

[0020] Reference numerals in the attached drawings: 1. Outer shell; 2. Inlet pipe; 3. Outlet pipe; 4. First cavity; 5. Second cavity; 6. Third cavity; 7. Connecting pipe one; 8. Connecting pipe two; 9. Air hole one; 10. Air hole two; 11. Fourth cavity; 12. Sound insulation cotton; 13. Silencing pipe one; 14. Mounting bracket one; 15. Mounting bracket two; 16. Partition plate; 17. Cover plate; 18. Bushing. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0022] A generator muffler includes a housing 1, with an air inlet pipe 2 and an air outlet pipe 3 respectively disposed on both sides of the housing 1. A first cavity 4, a second cavity 5, and a third cavity 6 are sequentially formed inside the housing 1. A connecting pipe 7 is disposed between the first cavity 4 and the second cavity 5, and a connecting pipe 8 is disposed between the first cavity 4 and the third cavity 6. The air inlet pipe 2 communicates with the second cavity 5, and the air outlet pipe 3 communicates with the third cavity 6. By setting the first cavity 4, the second cavity 5, and the third cavity 6, and connecting each cavity through the connecting pipe 7 and the connecting pipe 8, the airflow of the generator flows back and forth, reducing the airflow velocity, weakening turbulent noise, and ensuring the muffler effect.

[0023] The intake pipe 2 has several air holes 9 arranged in a ring array. The air holes 9 are located at the side end of the intake pipe 2 and are connected to the cavity 2. A fourth cavity 11 is also provided between the first cavity 4 and the second cavity 5. The intake pipe 2 is also provided with air holes 10, which are connected to the fourth cavity 11. By setting air holes 9 and air holes 10, sound waves are reflected and interfered with, so that the sound waves are reflected multiple times inside and interfere with each other to cancel each other out.

[0024] Both the second cavity 5 and the fourth cavity 11 are equipped with sound insulation cotton 12. The sound insulation cotton 12 is sleeved on the connecting pipe 8. By setting the sound insulation cotton 12, the sound energy of high frequency turbulent noise is absorbed. The sound insulation cotton 12 is usually made of glass fiber.

[0025] The outer casing 1 is also equipped with a silencer pipe 13, a mounting bracket 14, a mounting bracket 2 15, a partition 16, and a cover plate 17. The outer casing 1 and the silencer pipe 13 are both cylindrical. The silencer pipe 13 is directly set at the bottom of the outer casing 1. The mounting bracket 14 and the mounting bracket 2 15 are both set inside the silencer pipe. There are three connecting pipes 1 7 and three connecting pipes 2 8. The three connecting pipes 1 7 are fixedly set in a ring array on the mounting bracket 2 15. The three connecting pipes 2 8 are fixedly set in a ring array on the mounting bracket 1 14. The mounting bracket 1 14 is provided with countersunk holes for the mounting bracket connecting pipes 1 7 to abut. The mounting bracket 2 15 is provided with through holes for the connecting pipes 2 8 to pass through. The silencer pipe 13, the mounting bracket 14, and the mounting bracket 2 15 cooperate to form a fourth cavity 11.

[0026] The intake pipe 2 is fixed to the muffler pipe 13 by screws, and the exhaust pipe 3 is fixed to the cover plate 17. The muffler pipe is also equipped with a bushing 18, which is located between the muffler pipe 13 and the mounting bracket 14, so that the muffler pipe 13 and the mounting bracket 14 form a first cavity 4. The partition plate 16 is slidably installed in the outer shell 1 and abuts against the muffler pipe 13, so that the mounting bracket 15 and the partition plate 16 form a second cavity 5. The cover plate 17 is fixed to the outer shell 1 by threads, and at the same time, the cover plate 17 abuts against the partition plate 16, so that the partition plate 16 and the cover plate 17 form a third cavity 6. The connecting pipe 8 passes through the partition plate 16 and extends into the third cavity 6. The tail of the exhaust pipe 3 also extends into the third cavity 6. The gas entering the exhaust pipe 3 from the connecting pipe 8 also needs to flow in an S-shape to further reduce the airflow velocity.

[0027] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A generator muffler, comprising a housing (1), characterized in that: An air inlet pipe (2) and an air outlet pipe (3) are respectively provided on both sides of the outer shell (1). A first cavity (4), a second cavity (5) and a third cavity (6) are formed sequentially inside the outer shell (1). A connecting pipe (7) is provided between the first cavity (4) and the second cavity (5). A connecting pipe (8) is provided between the first cavity (4) and the third cavity (6). The air inlet pipe (2) is connected to the second cavity (5), and the air outlet pipe (3) is connected to the third cavity (6).

2. The generator muffler according to claim 1, characterized in that: The air intake pipe (2) has several air holes (9) arranged in a ring array. The air holes (9) are located at the side end of the air intake pipe (2) and are connected to the cavity.

3. A generator muffler according to claim 1, characterized in that: A fourth cavity (11) is provided between the first cavity (4) and the second cavity (5), and an air inlet (2) is provided on the air inlet pipe (2), which is connected to the fourth cavity (11).

4. A generator muffler according to claim 3, characterized in that: Both the second cavity (5) and the fourth cavity (11) are provided with sound insulation cotton (12), which is sleeved on the connecting pipe (8).

5. A generator muffler according to claim 4, characterized in that: The outer shell (1) is also provided with a silencer pipe (13), a mounting bracket (14), a mounting bracket (15), a partition (16), and a cover plate (17). The silencer pipe (13) and the mounting bracket (14) form a first cavity (4). The mounting bracket (14) and the mounting bracket (15) form a fourth cavity (11). The mounting bracket (15) and the partition (16) form a second cavity (5). The partition (16) and the cover plate (17) form a third cavity (6). The cover plate (17) is fixed to the outer shell (1) by threads.

6. A generator muffler according to claim 5, characterized in that: The air intake pipe (2) is fixed to the muffler pipe (13) by screws, and the air outlet pipe (3) is fixed on the cover plate (17). The muffler pipe is also provided with a bushing (18), which is located between the muffler pipe (13) and the mounting bracket (14).

7. A generator muffler according to claim 6, characterized in that: The first connecting pipe (7) is fixedly mounted on the second mounting bracket (15), the second connecting pipe (8) is fixedly mounted on the first mounting bracket (14), the second connecting pipe (8) passes through the partition (16) and extends into the third cavity (6), and the tail of the air outlet pipe (3) also extends into the third cavity (6).

Images