Silencer for power gasoline engine
By designing a multi-chamber structure and reinforcing ribs for the muffler of a gasoline engine, the problems of muffler being prone to breakage and having poor noise reduction effect have been solved, effectively reducing exhaust noise and improving structural stability, thus enhancing safety.
Patent Information
- Application Number
- CN202520538740.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-03-25
AI Technical Summary
Existing mufflers for gasoline engines are prone to breakage and have poor noise reduction effects, failing to effectively reduce exhaust noise.
A multi-chamber silencer was designed, including an intake pipe, a baffle, and an exhaust pipe inside the housing. The silencer reduces the flue gas velocity through multiple buffers, improves structural stability through reinforcing ribs, and enhances safety and durability by combining a protective cover and heat dissipation holes.
It effectively reduces flue gas noise, improves the structural stability and service life of the silencer, and enhances safety.
Smart Images
Figure CN223707755U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the muffler technical field especially relates to a power type gasoline engine muffler. BACKGROUND
[0002] The exhaust pipe of power type gasoline engine will produce a large amount of flue gas when working, and a lot of noise will be produced in the process of discharging flue gas, so the power type gasoline engine will be connected with a muffler when using, and the muffler used in the market is easy to break when using because the gasoline engine will produce vibration when working, and the muffling effect of the muffler used at present is also poor.
[0003] In view of the above problems, the utility model file provides a power type gasoline engine muffler. UTILITY MODEL CONTENT
[0004] The utility model provides a power type gasoline engine muffler, improves the muffling effect and strengthens the stability of the structure of the muffler when using, improves the service life of the muffler.
[0005] The utility model provides the following technical scheme:
[0006] A power type gasoline engine muffler, including the casing, the casing is provided with the intake pipe in the through, the casing lateral wall is equipped with the reinforcing rib in the position of intake pipe, the intake pipe one end is equipped with the mounting flange, the other end is equipped with the plug, the casing is equipped with the baffle, the baffle divides the casing into first chamber and second chamber, the baffle is equipped with third chamber, the intake pipe is located in the first chamber one section lateral wall and opens the intake hole, the baffle opens the first gas hole, the third chamber is located in the second chamber lateral wall and opens the second gas hole, the third chamber lateral wall is equipped with the exhaust pipe still, the exhaust pipe is through the casing lateral wall.
[0007] Further, the casing includes a first casing unit and a second casing unit, the first casing unit and the second casing unit are both groove-shaped structures, and both edges are provided with a long edge for easy connection and fixation, the baffle cooperates with the first casing unit to form a first chamber, and cooperates with the second casing unit to form a second chamber.
[0008] Further, the partition plate comprises a first partition plate unit adjacent to the first housing unit and a second partition plate unit adjacent to the second housing unit, the first partition plate unit is recessed to form a first recess into the first chamber, the second partition plate unit is recessed to form a second recess into the second chamber, the first partition plate unit and the second partition plate unit are spliced so that the first recess and the second recess are combined to form the third chamber, the first partition plate unit is further provided with a first gas inlet hole, the second partition plate unit is provided with a clearance hole at a position corresponding to the first gas inlet hole, and the second partition plate unit is provided with a second gas inlet hole at a position corresponding to the third chamber.
[0009] Further, the second partition plate is provided with a baffle at a position corresponding to the clearance hole.
[0010] Further, the housing is further provided with a shroud, the shroud is a groove-shaped structure, and the air inlet pipe is located at the opening side of the shroud.
[0011] Further, the shroud is provided with a plurality of heat dissipation holes.
[0012] Further, the shroud is fixedly connected to the housing through bolts, and the position where the bolts are arranged on the shroud is provided with an inner recessed conical mounting groove.
[0013] Further, the end of the plug is in a hemispherical shape.
[0014] Further, the end of the exhaust pipe is further provided with a spark elimination net.
[0015] In the utility model, one end of the air inlet pipe is connected with the exhaust pipe of the gasoline engine through a mounting flange, the other end of the air inlet pipe is sealed through a plug, smoke is emitted, the incoming smoke is buffered, the flow speed of the smoke is reduced, and then the noise of the smoke is reduced, the smoke is transported into the first chamber through the gas inlet hole in the side wall of the air inlet pipe, flows into the second chamber through the first gas inlet hole in the partition plate, flows into the third chamber through the second gas inlet hole in the partition plate, and is discharged from the exhaust pipe in the side wall of the third chamber, the multiple buffering of the air inlet pipe, the first chamber, the second chamber and the third chamber greatly reduces the flow speed of the smoke, and then reduces the noise generated by the flow of the smoke, the structural strength of the connection between the air inlet pipe and the housing is improved through the reinforcing ribs, the influence of the shaking of the air inlet pipe on the housing is reduced, the breakage of the muffler is effectively avoided, and the service life of the muffler is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 A three-dimensional structure schematic view of a power type gasoline engine muffler is provided in the utility model embodiment;
[0017] Figure 2 A three-dimensional structure schematic view of a housing in a power type gasoline engine muffler is provided in the utility model embodiment;
[0018] Figure 3 Figure 1 is a bottom view of the middle shell of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0019] Figure 4 Figure 2 is an A-A sectional view of the middle shell of the power type gasoline engine muffler provided by the embodiment of the utility model; Figure 3
[0020] Figure 5 Figure 3 is a three-dimensional structure schematic view of the middle intake pipe of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0021] Figure 6 Figure 4 is a three-dimensional structure schematic view of the first shell unit of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0022] Figure 7 Figure 5 is a three-dimensional structure schematic view of the second shell unit of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0023] Figure 8 Figure 6 is a top view of the first baffle unit of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0024] Figure 9 Figure 7 is a top view of the second baffle unit of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0025] Figure 10 Figure 8 is a three-dimensional structure schematic view of the shield of the power type gasoline engine muffler provided by the embodiment of the utility model;
[0026] Figure 11 Figure 9 is a three-dimensional structure schematic view of the baffle of the power type gasoline engine muffler provided by the embodiment of the utility model.
[0027] Reference signs:
[0028] 1, shell; 101, first shell unit; 102, first cavity; 103, second shell unit; 104, second cavity; 2, intake pipe; 201, mounting flange; 202, plug; 203, intake hole; 3, baffle; 301, first baffle unit; 30101, first gas delivery hole; 30102, first groove; 302, second baffle unit; 30201, second gas delivery hole; 30202, second groove; 30203, baffle; 30204, clearance hole; 303, third cavity; 4, exhaust pipe; 5, shield; 501, conical mounting groove; 502, heat dissipation hole; 6, reinforcing rib; 7, along the long edge; 8, spark elimination net. DETAILED DESCRIPTION
[0029] The utility model embodiment is described below with reference to the drawings.
[0030] In the description of the utility model embodiment, it should be explained that, unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood in a broad sense, for example, "connection" can be detachably connected, and can also be non-detachably connected, can be directly connected, and can also be indirectly connected through an intermediate medium. In addition, "communication" can be direct communication, and can also be indirect communication through an intermediate medium. Among them, "fixing" means that the relative position relationship after connection is changed. The orientation terms mentioned in the utility model embodiment, such as "inner", "outer", "top", "bottom" and the like, are only the direction of the drawings, therefore, the orientation terms used are for better and clearer illustration and understanding of the utility model embodiment, and are not indicative or implied that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation of the utility model embodiment.
[0031] In the utility model embodiment, the terms "first", "second" are only for description purposes, and cannot be understood as indicative or implied of relative importance or impliedly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features.
[0032] In the utility model embodiment, "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can mean that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.
[0033] In the description of the utility model, the reference "one embodiment" or "some embodiments" means that in one or more embodiments of the utility model, the specific features, structures or characteristics described in combination with the embodiment are included. Therefore, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in other some embodiments" and the like appearing in different places in the specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "include", "contain", "have" and their variants mean "include but are not limited to", unless otherwise specifically emphasized.
[0034] Embodiment:
[0035] Reference Figures 1 to 11As shown, a power type gasoline engine silencer, including a shell 1, the shell 1 is provided with an air inlet pipe 2, the shell 1 side wall is provided with a reinforcing rib 6 corresponding to the position of the air inlet pipe 2, one end of the air inlet pipe 2 is provided with a mounting flange 201, the other end is provided with a plug 202, the shell 1 is provided with a partition plate 3, the partition plate 3 divides the shell 1 into a first chamber 102 and a second chamber 104, the partition plate 3 is provided with a third chamber 303, the side wall of the air inlet pipe 2 located in the first chamber 102 is provided with an air inlet hole 203, the partition plate 3 is provided with a first gas conveying hole 30101, the side wall of the second chamber 104 is provided with a second gas conveying hole 30201, the third chamber 303 is provided with an exhaust pipe 4 which penetrates the side wall of the shell 1.
[0036] One end of the air inlet pipe 2 is connected with the exhaust pipe 4 of the gasoline engine through the mounting flange 201, the other end of the air inlet pipe 2 is sealed through the plug 202, at the same time, the flue gas is emitted, the flue gas coming later is buffered, the flow speed of the flue gas is reduced, and then the noise of the flue gas is reduced, the flue gas is conveyed into the first chamber 102 through the gas conveying hole of the side wall of the air inlet pipe 2, flows into the second chamber 104 through the first gas conveying hole 30101 on the partition plate 3, flows into the third chamber 303 through the second gas conveying hole 30201 on the partition plate 3, and is discharged from the exhaust pipe 4 on the side wall of the third chamber 303, through the multiple buffering of the air inlet pipe 2, the first chamber 102, the second chamber 104 and the third chamber 303, the flow speed of the flue gas is greatly reduced, and then the noise generated by the flow of the flue gas is reduced, at the same time, the structural strength of the connection between the air inlet pipe 2 and the shell 1 is improved through the reinforcing rib 6, the influence of the shaking of the air inlet pipe 2 on the shell 1 is reduced, the rupture of the silencer is effectively avoided, and the service life of the silencer is improved.
[0037] The shell 1 includes a first shell unit 101 and a second shell unit 103, both the first shell unit 101 and the second shell unit 103 are groove-shaped structures, and both are provided with a long edge 7 at the edge for convenient connection and fixation, the partition plate 3 cooperates with the first shell unit 101 to form the first chamber 102, and cooperates with the second shell unit 103 to form the second chamber 104.
[0038] The first shell unit 101 and the second shell unit 103 are spliced to form the shell 1, which is convenient for production and processing, the first shell unit 101 and the second shell unit 103 are connected together through edge flanging riveting through the long edge 7 at the edge, which is convenient for assembly and fixation, both the first shell unit 101 and the second shell unit 103 are groove-shaped structures, which can be directly stamped and formed, then the partition plate 3 is installed at the splicing position of the first shell unit 101 and the second shell unit 103, and the first chamber 102 and the second chamber 104 are formed, which reduces the processing difficulty.
[0039] The partition plate 3 comprises a first partition plate unit 301 adjacent to the first housing unit 101 and a second partition plate unit 302 adjacent to the second housing unit 103, the first partition plate unit 301 is recessed to form a first recess 30102 into the first chamber 102, the second partition plate unit 302 is recessed to form a second recess 30202 into the second chamber 104, the first partition plate unit 301 and the second partition plate unit 302 are spliced so that the first recess 30102 and the second recess 30202 are spliced to form the third chamber 303, the first partition plate unit 301 is further provided with a first gas inlet hole 30101, the second partition plate unit 302 is provided with a gap hole 30204 at a position corresponding to the first gas inlet hole 30101, and the second partition plate unit 302 is provided with a second gas inlet hole 30201 at a position corresponding to the third chamber 303.
[0040] The first partition plate unit 301 and the second partition plate unit 302 are spliced to form the partition plate 3, and the first recess 30102 on the first partition plate unit 301 and the second recess 30202 on the second partition plate unit 302 are spliced to form the third chamber 303, which facilitates the formation of the third chamber 303 on the partition plate 3 and reduces the production difficulty, and the first recess 30102 and the second recess 30202 can be directly punched. The first gas inlet hole 30101 on the first partition plate unit 301 is used for the flue gas to flow from the first chamber 102 into the second chamber 104, the gap hole 30204 on the second partition plate unit 302 facilitates the flue gas to flow into the second chamber 104, and the second gas inlet hole 30201 on the second partition plate unit 302 facilitates the flue gas to flow from the second chamber 104 into the third chamber 303.
[0041] The second partition plate 3 is provided with a baffle 30203 at a position corresponding to the gap hole 30204.
[0042] The baffle 30203 blocks the flue gas when the flue gas flows from the first chamber 102 into the second chamber 104 through the first gas inlet hole 30101, so that the flow direction of the flue gas is dispersed, the flow rate of the flue gas is further reduced, and the noise generated by the flow of the flue gas is reduced.
[0043] The housing 1 is further provided with a protective cover 5, the protective cover 5 is a groove-shaped structure, and the air inlet pipe 2 is located on the opening side of the protective cover 5.
[0044] The protective cover 5 prevents workers from touching the housing 1 by mistake, because the temperature of the flue gas is high, so when the flue gas flows in the housing 1, the temperature of the housing 1 will also rise, installing the protective cover 5 on the outside of the housing 1 can protect the workers and improve the safety of the workers, and on the other hand, the protective cover 5 also protects the housing 1 from being damaged by collision, the air inlet pipe 2 is located on the side of the opening of the protective cover 5, so that the protective cover 5 can be conveniently opened, and the air inlet pipe 2 will not affect the position of the protective cover 5.
[0045] The protective cover 5 is provided with a plurality of heat dissipation holes 502.
[0046] The shell 1 is in contact with the external gas through the heat dissipation hole 502, so that the shell 1 is facilitated to dissipate heat.
[0047] The shield 5 is fixedly connected to the shell 1 by bolts, and a position where the bolts are arranged on the shield 5 is provided with an inner-recessed conical mounting groove 501.
[0048] The conical mounting groove 501 of the shield 5 is beneficial to bolt mounting, and also improves the structural strength of the shield 5 and the stress strength of the shield 5 through the inner-recessed conical mounting groove 501, so that the shield 5 can be effectively prevented from being deformed.
[0049] The end of the plug 202 is in a hemispherical shape. After the flue gas contacts the end of the plug 202, the flue gas can not only be emitted, but also the direction of the flue gas reflection can be changed, so that the sound attenuation effect can be further improved compared with a flat surface.
[0050] The end of the exhaust pipe is also provided with a spark elimination net 8, which filters out the spark impurities generated in the gasoline engine combustion chamber, so that the spark impurities are not discharged into the atmosphere through the exhaust pipe, thereby eliminating the spark generated by the gasoline engine.
[0051] The first shell unit 101, the second shell unit 103, the first partition plate unit 301 and the second partition plate unit 302 are directly processed by a stamping process, so that the processing difficulty is low and the production efficiency is high. The air inlet pipe 2 passes through the first shell unit 101 and the second shell unit 103, the air inlet hole 203 on the air inlet pipe 2 is arranged in the first chamber 102, the first partition plate unit 301 and the second partition plate unit 302 are spliced and then placed between the first shell unit 101 and the second shell unit 103, the first shell unit 101 and the second shell unit 103 are connected and fixed by the long edge 7 at the edge of the first shell unit 101 and the second shell unit 103 through flanging riveting, and the first partition plate unit 301 and the second partition plate unit 302 can also be pressed at the same time, and then the shield 5 is fixed on the outside of the shell 1 by bolts.
[0052] In use, the gas conveying pipe is installed at the end of the exhaust pipe 4 of the gasoline engine by the mounting flange 201, the flue gas is conveyed into the air inlet pipe 2 of the muffler from the exhaust pipe 4, and then flows into the first chamber 102 from the air inlet hole 203 on the air inlet pipe 2, then flows into the second chamber 104 through the first gas conveying hole 30101 on the partition plate 3, then flows into the third chamber 303 through the second gas conveying hole 30201, and finally flows out from the exhaust pipe 4 on the side wall of the third chamber 303. The flow rate of the flue gas is buffered by the muffler, the noise generated by the flue gas flow is reduced, the purpose of noise reduction is achieved, the connecting structure between the air inlet pipe 2 and the shell 1 is improved by the reinforcing ribs 6, and the structural stability of the muffler is effectively protected.
[0053] In actual use, the intake pipe 2 adopts a bent pipe, which can further improve the silencing effect compared with a straight pipe.
[0054] The reinforcing rib 6 is a punched rib, which is convenient for processing and can improve the structural strength.
[0055] The two semicircular grooves stamped on the first partition unit 301 and the second partition unit 302 are spliced to form the exhaust pipe 4.
[0056] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application; in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A power-type gasoline engine muffler, characterized by comprising: The shell is internally provided with an air inlet pipe, the side wall of the shell is provided with a reinforcing rib corresponding to the position of the air inlet pipe, one end of the air inlet pipe is provided with a mounting flange, and the other end is provided with a plug, the shell is internally provided with a partition plate, the partition plate divides the shell into a first chamber and a second chamber, the partition plate is provided with a third chamber, the side wall of the air inlet pipe located in the first chamber is provided with an air inlet hole, the partition plate is provided with a first gas conveying hole, the second chamber is provided with a second gas conveying hole, the third chamber is provided with an exhaust pipe, and the exhaust pipe penetrates the side wall of the shell.
2. A power-assisted petrol engine silencer according to claim 1, characterised in that The shell comprises a first shell unit and a second shell unit, both of which are groove-shaped structures and are provided with a long edge for convenient connection and fixation at the edge, the partition plate cooperates with the first shell unit to form a first chamber and cooperates with the second shell unit to form a second chamber.
3. A power-assisted petrol engine silencer according to claim 2, characterised in that The partition plate comprises a first partition plate unit adjacent to the first shell unit and a second partition plate unit adjacent to the second shell unit, the first partition plate unit is recessed to form a first recess into the first chamber, the second partition plate unit is recessed to form a second recess into the second chamber, the first partition plate unit and the second partition plate unit are spliced, so that the first recess and the second recess are combined to form a third chamber, the first partition plate unit is provided with a first gas conveying hole, the second partition plate unit is provided with a clearance hole corresponding to the position of the first gas conveying hole, and the second partition plate unit is provided with a second gas conveying hole corresponding to the position of the third chamber.
4. A power-assisted petrol engine silencer according to claim 3, characterised in that The second partition plate is provided with a baffle corresponding to the position of the clearance hole.
5. A power gasoline engine silencer according to claim 1, characterized in that, The shell is further provided with a protective cover outside, the protective cover is a groove-shaped structure, and the air inlet pipe is located on the opening side of the protective cover.
6. A power-assisted petrol engine silencer according to claim 5, characterised in that The protective cover is provided with a plurality of heat dissipation holes.
7. A power-assisted petrol engine silencer according to claim 6, characterised in that The protective cover is fixedly connected to the shell by bolts, and the protective cover is provided with an internally recessed conical mounting groove at the position of the bolts.
8. A power gasoline engine silencer according to claim 1, characterized in that, The end of the plug is in the shape of a hemisphere.
9. A power gasoline engine silencer according to claim 1, characterized in that, The end of the exhaust pipe is further provided with a spark elimination net.