A muffler having a heat insulating structure

Abstract

The utility model discloses a muffler with heat insulation structure, including the muffler casing, the one end of muffler shell is installed with the smoke pipe, the other end of muffler shell is installed with the smoke exhaust pipe, and the top of smoke pipe in muffler shell is provided with first sealing plate, and first sealing plate and muffler shell are arranged in parallel, first sealing plate divides the upper part in muffler shell into independent first cavity, and the one end of first cavity close to smoke pipe has first air inlet, and the one end of first cavity close to smoke exhaust pipe has first gas outlet. The utility model can reduce the temperature of muffler obviously, has air sandwich, can play the role of heat insulation, and utilizes the circulation of air to take away the temperature of muffler, and the faster the vehicle travels, the better the cooling effect of muffler.

Description

Technical Field

[0001] This utility model relates to mufflers, and more particularly to a muffler with a heat insulation structure. Background Technology

[0002] A muffler is a noise reduction device used in airflow ducts that simultaneously transmit noise. It utilizes pipes with sound-absorbing linings, bends, or pipes with sudden changes in cross-sectional area or other discontinuous acoustic impedance to attenuate or reflect noise back into the duct. The former is called a resistive muffler, and the latter a reactive muffler; there are also composite impedance mufflers. Motorcycle mufflers are used to exhaust smoke and reduce noise. Because the temperature of the exhaust smoke is very high, the temperature of the motorcycle muffler is also very high, which can easily burn the rider. Utility Model Content

[0003] The purpose of this invention is to provide a muffler with a heat insulation structure, which can significantly reduce the temperature of the muffler. It has an air jacket, which can play a role in heat insulation, and uses the air circulation to remove the heat from the muffler.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A muffler with a heat insulation structure includes a muffler housing, a smoke inlet pipe installed at one end of the muffler housing, a smoke exhaust pipe installed at the other end of the muffler housing, a first sealing plate disposed above the smoke inlet pipe inside the muffler housing, the first sealing plate being disposed parallel to the muffler housing; the first sealing plate dividing the upper part of the muffler housing into an independent first cavity, the first cavity having a first air inlet at the end near the smoke inlet pipe, and a first air outlet at the end of the first cavity near the smoke exhaust pipe.

[0006] In the aforementioned muffler with a heat insulation structure, a second sealing plate is provided below the smoke inlet pipe inside the muffler housing, and the second sealing plate is arranged parallel to the muffler housing; the second sealing plate divides the lower part of the muffler housing into an independent second cavity, the second cavity has a second air inlet at the end near the smoke inlet pipe, and a second air outlet at the end near the exhaust pipe.

[0007] In the aforementioned muffler with a heat insulation structure, a plurality of buffer structures are installed on the first sealing plate. The buffer structure includes a housing, and a piston, a spring and a washer are disposed inside the housing. The washer is located between the spring and the piston. One end of the spring abuts against the inner wall of the housing, and the other end of the spring is fixedly connected to the washer. The housing has a first opening and a second opening. The first opening is located between the first sealing plate and the second sealing plate, and the second opening is located in the first cavity.

[0008] In the aforementioned muffler with a heat insulation structure, a guide tube is provided on the housing, and a guide rod is connected to the piston, with the guide rod located inside the guide tube.

[0009] In the aforementioned muffler with a heat insulation structure, a vertically arranged baffle is also installed inside the muffler housing, which divides the muffler housing into a first cavity and a second cavity; the smoke inlet pipe is connected to the first cavity, and the smoke exhaust pipe is connected to the second cavity. The first cavity and the second cavity are connected through a smoke guide pipe, which is arranged in parallel with the smoke exhaust pipe, and the axes of the smoke guide pipe and the smoke exhaust pipe are not on the same straight line.

[0010] Compared with the prior art, this utility model can significantly reduce the temperature of the muffler. It has an air jacket, which can play a role in heat insulation. Furthermore, it uses air circulation to remove the heat from the muffler. The faster the vehicle travels, the better the cooling effect of the muffler. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0012] Figure 2 This is a schematic diagram of the buffer structure.

[0013] Reference numerals: 1-Second sealing plate, 2-Second air inlet, 3-Muffler housing, 4-Smoke inlet pipe, 5-First air inlet, 6-First cavity, 7-Buffer structure, 8-First sealing plate, 9-First cavity, 10-First air outlet, 11-Second cavity, 12-Smoke exhaust pipe, 13-Baffle, 14-Second air outlet, 15-Smoke guide pipe, 16-Second cavity, 17-Piston, 18-Washer, 19-Spring, 20-Guide rod, 21-Guide tube, 22-Second opening, 23-Housing, 24-First opening.

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0015] Embodiment 1 of this utility model: A silencer with a heat insulation structure includes a silencer housing 3, with a smoke inlet pipe 4 installed at one end of the silencer housing 3 and a smoke exhaust pipe 12 installed at the other end of the silencer housing 3. A first sealing plate 8 is provided above the smoke inlet pipe 4 inside the silencer housing 3, and the first sealing plate 8 is arranged parallel to the silencer housing 3. The first sealing plate 8 divides the upper part of the silencer housing 3 into an independent first cavity 6. The first cavity 6 has a first air inlet 5 at the end near the smoke inlet pipe 4 and a first air outlet 10 at the end near the smoke exhaust pipe 12. A second sealing plate 1 is provided below the smoke inlet pipe 4 inside the silencer housing 3, and the second sealing plate 1 is arranged parallel to the silencer housing 3. The second sealing plate 1 divides the lower part of the silencer housing 3 into an independent second cavity 16. The second cavity 16 has a second air inlet 2 at the end near the smoke inlet pipe 4 and a second air outlet 14 at the end near the smoke exhaust pipe 12.

[0016] Example 2: A silencer with a heat insulation structure includes a silencer housing 3. A smoke inlet pipe 4 is installed at one end of the silencer housing 3, and a smoke exhaust pipe 12 is installed at the other end. A first sealing plate 8 is disposed above the smoke inlet pipe 4 inside the silencer housing 3, and the first sealing plate 8 is parallel to the silencer housing 3. The first sealing plate 8 divides the upper part of the silencer housing 3 into an independent first cavity 6. The first cavity 6 has a first air inlet 5 near the smoke inlet pipe 4 and a first air outlet 10 near the smoke exhaust pipe 12. A second sealing plate 1 is disposed below the smoke inlet pipe 4 inside the silencer housing 3, and the second sealing plate 1 is parallel to the silencer housing 3. The second sealing plate 1 divides the lower part of the silencer housing 3 into an independent second cavity 16. The second cavity 16 has a second air inlet 2 near the smoke inlet pipe 4 and a second air outlet 14 near the smoke exhaust pipe 12.

[0017] A plurality of buffer structures 7 are installed on the first sealing plate 8. The buffer structure 7 includes a housing 23. A piston 17, a spring 19 and a washer 18 are disposed inside the housing 23. The washer 18 is located between the spring 19 and the piston 17. One end of the spring 19 abuts against the inner wall of the housing 23, and the other end of the spring 19 is fixedly connected to the washer 18. The housing 23 has a first opening 24 and a second opening 22. The first opening 24 is located between the first sealing plate 8 and the second sealing plate 1, and the second opening 22 is located in the first cavity 6.

[0018] Example 3: A silencer with a heat insulation structure includes a silencer housing 3. A smoke inlet pipe 4 is installed at one end of the silencer housing 3, and a smoke exhaust pipe 12 is installed at the other end. A first sealing plate 8 is disposed above the smoke inlet pipe 4 inside the silencer housing 3, and the first sealing plate 8 is parallel to the silencer housing 3. The first sealing plate 8 divides the upper part of the silencer housing 3 into an independent first cavity 6. The first cavity 6 has a first air inlet 5 near the smoke inlet pipe 4 and a first air outlet 10 near the smoke exhaust pipe 12. A second sealing plate 1 is disposed below the smoke inlet pipe 4 inside the silencer housing 3, and the second sealing plate 1 is parallel to the silencer housing 3. The second sealing plate 1 divides the lower part of the silencer housing 3 into an independent second cavity 16. The second cavity 16 has a second air inlet 2 near the smoke inlet pipe 4 and a second air outlet 14 near the smoke exhaust pipe 12.

[0019] A plurality of buffer structures 7 are installed on the first sealing plate 8. The buffer structure 7 includes a housing 23. A piston 17, a spring 19 and a washer 18 are disposed inside the housing 23. The washer 18 is located between the spring 19 and the piston 17. One end of the spring 19 abuts against the inner wall of the housing 23, and the other end of the spring 19 is fixedly connected to the washer 18. The housing 23 has a first opening 24 and a second opening 22. The first opening 24 is located between the first sealing plate 8 and the second sealing plate 1, and the second opening 22 is located in the first cavity 6.

[0020] A guide tube is provided on the housing 23, and a guide rod 20 is connected to the piston 17, with the guide rod 20 located inside the guide tube. A vertically arranged baffle 13 is also installed inside the muffler housing 3, which divides the muffler housing 3 into a first cavity 9 and a second cavity 11. The smoke inlet pipe 4 is connected to the first cavity 9, and the smoke outlet pipe 12 is connected to the second cavity 11. The first cavity 9 and the second cavity 11 are connected through a smoke guide pipe 15, which is arranged in parallel with the smoke outlet pipe 12, but their axes are not on the same straight line.

[0021] The working principle of one embodiment of this utility model is as follows: Smoke gas is discharged through the smoke inlet pipe 4, the first cavity 9, the smoke guide pipe 15, the second cavity 11, and the exhaust pipe 12. During this process, the smoke gas heats the muffler housing 3, causing its temperature to rise. While the vehicle is generally in motion during smoke emission, air enters the first cavity 6 from the first air inlet 5 and then exits from the first air outlet 10 due to wind resistance; it also enters the second cavity 16 from the second air inlet 2 and then exits from the second air outlet 14. The flowing air carries away the heat from the muffler housing 3, causing its temperature to decrease.

[0022] The muffler of this application also has a buffer structure 7, the function of which is to improve the muffler's noise reduction effect. This is because the noise from the muffler is mainly caused by the impact of flue gas on the muffler housing 3. The buffer structure reduces the impact of the flue gas on the muffler housing 3, thereby improving the muffler's noise reduction effect. Under the action of the flue gas, the piston 17 compresses the spring 19, which is equivalent to increasing the internal volume of the muffler housing 3 and reducing the impact of the flue gas on the muffler housing 3.

Claims

1. A silencer with a heat-insulating structure, comprising a silencer housing (3), an inlet pipe (4) installed at one end of the silencer housing (3), and an exhaust pipe (12) installed at the other end of the silencer housing (3), characterized in that, A first sealing plate (8) is provided above the smoke inlet pipe (4) inside the muffler housing (3). The first sealing plate (8) and the muffler housing (3) are arranged in parallel. The first sealing plate (8) divides the upper part of the muffler housing (3) into an independent first cavity (6). The first cavity (6) has a first air inlet (5) at the end near the smoke inlet pipe (4) and a first air outlet (10) at the end near the exhaust pipe (12).

2. A silencer with a heat-insulating structure according to claim 1, characterized in that, A second sealing plate (1) is provided below the smoke inlet pipe (4) inside the muffler housing (3). The second sealing plate (1) and the muffler housing (3) are arranged in parallel. The second sealing plate (1) divides the lower part of the muffler housing (3) into an independent second cavity (16). The second cavity (16) has a second air inlet (2) at one end near the smoke inlet pipe (4) and a second air outlet (14) at one end near the exhaust pipe (12).

3. A silencer with a heat-insulating structure according to claim 2, characterized in that, Several buffer structures (7) are installed on the first sealing plate (8). The buffer structure (7) includes a housing (23). A piston (17), a spring (19) and a washer (18) are provided inside the housing (23). The washer (18) is located between the spring (19) and the piston (17). One end of the spring (19) abuts against the inner wall of the housing (23). The other end of the spring (19) is fixedly connected to the washer (18). The housing (23) has a first opening (24) and a second opening (22). The first opening (24) is located between the first sealing plate (8) and the second sealing plate (1). The second opening (22) is located in the first cavity (6).

4. A silencer with a heat-insulating structure according to claim 3, characterized in that, The housing (23) is provided with a guide tube, and the piston (17) is connected with a guide rod (20), which is located inside the guide tube.

5. A silencer with a heat-insulating structure according to claim 4, characterized in that, A vertically arranged baffle (13) is also installed inside the muffler housing (3). The baffle (13) divides the muffler housing (3) into a first cavity (9) and a second cavity (11). The smoke inlet pipe (4) is connected to the first cavity (9), and the smoke outlet pipe (12) is connected to the second cavity (11). The first cavity (9) and the second cavity (11) are connected through the smoke guide pipe (15). The smoke guide pipe (15) and the smoke outlet pipe (12) are arranged in parallel, and the axes of the smoke guide pipe (15) and the smoke outlet pipe (12) are not on the same straight line.

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