Silencer connecting pipe
By setting a plurality of horn-shaped blocking rings in the flow channel of the muffler connection pipe to increase the resistance during exhaust flow, the problem that the exhaust flow rate cannot be effectively reduced in the prior art is solved, and the effect of reducing noise and simplifying the muffler structure is achieved.
Patent Information
- Application Number
- CN202422084961.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing muffler connection pipe cannot effectively reduce the exhaust flow rate discharged from the engine exhaust port, resulting in high exhaust noise entering the muffler, which in turn requires increasing the size and complexity of the muffler and increasing the cost.
The flow blocking assembly is provided in the flow channel of the muffler connection pipe, including a plurality of horn-shaped first and second flow blocking rings, through which the resistance of the exhaust gas flows is increased and the flow rate of the exhaust gas entering the muffler is reduced.
By increasing the resistance of exhaust gas in the flow channel, the flow rate of exhaust gas entering the muffler is reduced, thereby reducing noise, achieving the purpose of reducing the size of muffler and simplifying the muffler structure, and reducing costs.
Smart Images
Figure CN222936821U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, and particularly relates to a muffler connecting pipe. Background Art
[0002] The muffler connecting pipe is used to introduce the exhaust gas discharged from the engine into the muffler. Its intake end is connected to the exhaust port of the engine, and its outlet end is connected to the intake port of the muffler. However, the muffler connecting pipe in the prior art is merely a hollow pipe and cannot reduce the speed of the exhaust gas discharged from the exhaust port of the engine, resulting in a relatively large noise generated by the exhaust gas entering the muffler. Therefore, in order to reduce the noise to the environmental protection standard, the muffler must be made larger, and the sound-absorbing structure in the muffler must be made more complex, resulting in a higher cost of the muffler. Summary of the Utility Model
[0003] Aiming at the defects in the prior art, the purpose of the utility model is to provide a muffler connecting pipe to solve or alleviate the above technical problems existing in the prior art.
[0004] To achieve the above purpose, the utility model provides a muffler connecting pipe, which includes a pipe body with a flow channel. A flow resistance component is arranged in the pipe body, and the flow resistance component is used to increase the resistance suffered by the exhaust gas when flowing in the flow channel, so as to reduce the speed of the exhaust gas entering the muffler.
[0005] Further, the flow resistance component includes a first flow resistance ring arranged in the flow channel. A plurality of the first flow resistance rings are provided, and the plurality of first flow resistance rings are arranged at intervals in sequence along the length direction of the flow channel.
[0006] Further, the first flow resistance ring is in a horn shape.
[0007] Further, one end of the first flow resistance ring facing the intake port of the flow channel has a smaller opening.
[0008] Further, the flow resistance component further includes a second flow resistance ring arranged in the flow channel. The second flow resistance ring is arranged at one end of one of the plurality of first flow resistance rings close to the intake port of the flow channel and facing the intake port of the flow channel.
[0009] Further, the pore sizes of the first flow resistance ring and the second flow resistance ring are the same.
[0010] Further, the pores of the first flow resistance ring and the second flow resistance ring are both smaller than the intake port and the outlet port of the flow channel.
[0011] Advantages of the Utility Model
[0012] The muffler connecting pipe provided by the present utility model increases the resistance suffered by the exhaust gas when flowing in the flow channel by arranging a flow resistance component in the flow channel, reduces the flow velocity of the exhaust gas entering the muffler, thereby reducing the noise generated by the exhaust gas in the muffler, and further achieving the purpose of reducing the size of the muffler and simplifying the noise reduction structure in the muffler. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.
[0014] Figure 1 Stereoscopic view of the muffler connecting pipe provided by an embodiment of the present utility model;
[0015] Figure 2 is Figure 1 Cross-sectional view in the A-A direction shown.
[0016] Reference numerals:
[0017] 100, pipe body; 110, flow channel; 111, air inlet; 112, air outlet; 210, first flow resistance ring; 220, second flow resistance ring; 201, air hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0018] The following will describe in detail the embodiments of the technical solutions of the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.
[0019] It should be noted that unless otherwise specified, the technical terms or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art to which the present utility model belongs.
[0020] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.
[0021] Furthermore, terms such as "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present utility model, "a plurality of" means more than two unless otherwise specifically defined.
[0022] In this application, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0023] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.
[0024] As Figure 1-2 shown, the present utility model provides a muffler connecting pipe, which includes a pipe body 100 having a flow channel 110. A flow resistance component is arranged in the pipe body 100, and the resistance of the exhaust gas when flowing in the flow channel 110 is increased through the flow resistance component to reduce the speed of the exhaust gas entering the muffler. The flow resistance component may be a flow resistance plate, a flow resistance ring, a flow resistance protrusion, etc. arranged in the flow channel, which are structures that can increase the resistance of the fluid.
[0025] As Figure 2 shown, in one embodiment, the flow resistance component includes a first flow resistance ring 210 arranged in the flow channel 110. A plurality of the first flow resistance rings 210 are provided, and the plurality of first flow resistance rings 210 are arranged at intervals in sequence along the length direction of the flow channel 110. In this embodiment, three first flow resistance rings 210 are provided.
[0026] During the process of the exhaust gas passing through the flow channel 110, not only does the first baffle ring 210 increase the resistance of the exhaust gas by blocking it, but also, since the air holes 201 of the first baffle ring are smaller than the inner diameter of the air passage, the local flow velocity of the exhaust gas in the flow channel 110 increases during the process of the exhaust gas passing through the air holes 201 of the first baffle ring. The greater the flow velocity of the fluid, the greater the resistance it receives, thus achieving the purpose of reducing the flow velocity of the exhaust gas flowing out of the flow channel 110 and entering the muffler.
[0027] As Figure 2 shown, preferably, the first baffle ring 210 is in a trumpet shape. Preferably, one end of the first baffle ring 210 facing the air inlet 111 of the flow channel 110 has a smaller opening. With such a setting of the first baffle ring 210, there is a gap between the outer side wall of the first baffle ring 210 and the inner side wall of the pipe body 100, and the opening of the gap faces the direction of the air flow. During the process of the exhaust gas flowing in the flow channel 110, part of the exhaust gas needs to enter the gap and is finally reflected back by the inner wall of the pipe body 100 and the outer wall of the first baffle ring 210. This not only increases the flow path of the fluid, but also increases the loss of fluid energy during the collision of the exhaust gas with the inner wall of the pipe body 100 and the outer wall of the first baffle ring 210, thus achieving the purpose of reducing the flow velocity of the exhaust gas when flowing out of the flow channel 110. At the same time, during the collision of the exhaust gas with the inner wall of the pipe body 100 and the outer wall of the first baffle ring 210, turbulence will be formed in the gap, further increasing the loss of fluid energy, and further reducing the flow velocity of the fluid when flowing out of the flow channel 110.
[0028] As Figure 2 shown, preferably, the distance between two adjacent first baffle rings 210 gradually decreases in the direction from the air inlet 111 to the air outlet 112 of the flow channel 110.
[0029] As Figure 2 shown, in one embodiment, the baffle assembly further includes a second baffle ring 220 disposed in the flow channel 110, and the second baffle ring 220 is disposed at one end of a first baffle ring 210 close to the air inlet 111 of the flow channel 110 and facing the air inlet 111 of the flow channel 110.
[0030] As Figure 2 shown, preferably, the air holes 201 of the first baffle ring 210 and the second baffle ring 220 are of the same size. Preferably, the air holes 201 of the first baffle ring 210 and the second baffle ring 220 are coaxially arranged.
[0031] As Figure 2 shown. Preferably, the air holes 201 of the first baffle ring 210 and the second baffle ring 220 are both smaller than the air inlet 111 and the air outlet 112 of the flow channel 110.
[0032] In the description of the present utility model, a large number of specific details are set forth. However, it will be understood that embodiments of the present utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this description.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the description of the present utility model.
Claims
1. A muffler connecting pipe, comprising a pipe body (100) having a flow channel (110), characterized in that: A flow-blocking component is arranged in the pipe body (100), and the flow-blocking component increases the resistance encountered by the exhaust gas when flowing in the flow channel (110), so as to reduce the speed of the exhaust gas entering the muffler; The flow blocking assembly comprises a first flow blocking ring (210) arranged in the flow channel (110), a plurality of the first flow blocking rings (210) are arranged, and the plurality of the first flow blocking rings (210) are arranged in sequence and spaced apart along the length direction of the flow channel (110).
2. The muffler connecting pipe according to claim 1, characterized in that: The first flow-blocking ring (210) is in a trumpet shape.
3. The muffler connecting pipe according to claim 2, characterized in that: One end of the first blocking ring (210) facing the air inlet (111) of the flow channel (110) has a smaller opening.
4. The muffler connecting pipe according to any one of claims 1 to 3, characterized in that: The flow blocking assembly further comprises a second flow blocking ring (220) arranged in the flow channel (110), wherein the second flow blocking ring (220) is arranged at one end of one of the first flow blocking rings (210) close to the air inlet (111) of the flow channel (110) among the plurality of first flow blocking rings (210) and facing the air inlet (111) of the flow channel (110).
5. The muffler connecting pipe according to claim 4, characterized in that: The air holes (201) of the first blocking ring (210) and the air holes (201) of the second blocking ring (220) are of the same size.
6. The muffler connecting pipe according to claim 5, characterized in that: The air holes (201) of the first blocking ring (210) and the second blocking ring (220) are both smaller than the air inlet (111) and the air outlet (112) of the flow channel (110).
7. The muffler connecting pipe according to claim 5 or 6, characterized in that: The air holes (201) of the first blocking ring (210) and the air holes (201) of the second blocking ring (220) are coaxially arranged.