Noise elimination and exhaust device for vehicle
By adding rainwater protection components to the vehicle silence exhaust device, including a diversion shell, a diversion bucket, a drain pipe and a water barrier ring, the problem of rainwater entering the exhaust gas discharge pipeline is solved, and an efficient rainproof effect is achieved, and it is suitable for the exhaust gas emission structure of existing vehicles.
Patent Information
- Application Number
- CN202510220532.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-04-18
AI Technical Summary
In the existing vehicle exhaust emission system, rainwater is prone to enter the exhaust emission pipeline along the inclined discharge port, resulting in the problem of rainwater entering the exhaust emission pipeline.
A vehicle silence exhaust device is designed, and a rainwater protection component is added, including a vertical elliptical diversion shell, an inverted conical diversion bucket, an oblique drain pipe and an arc-shaped water barrier ring. Through the design of these components, rainwater can be effectively diverted and discharged.
It effectively prevents rainwater from entering the exhaust gas emission pipeline, ensures the normal operation of the exhaust system, and is simple in structure and easy to install, and is suitable for the exhaust gas emission structure of existing vehicles.
Smart Images
Figure CN119844192A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of muffler exhaust devices, and more particularly to a muffler exhaust device for a vehicle. Background Art
[0002] At present, all vehicles are equipped with exhaust emission systems, and their exhaust emission pipes are important assembly parts in the exhaust emission systems. The tail parts of the exhaust emission pipes on some vehicles are vertical, and the tail parts mainly include a muffler and an exhaust tail pipe. The exhaust tail pipe is a curved pipe and is provided with an oblique discharge port. It is found that a small amount of rainwater will enter the exhaust emission pipe along the oblique discharge port during use. Therefore, it is proposed to provide a liner at the connection between the muffler and the exhaust tail pipe, and the outlet of the muffler is located in the liner. The liner is inserted in the exhaust tail pipe and is provided with a gap with the outer wall of the exhaust tail pipe, and a drainage hole is provided on the outer wall of the lower part of the exhaust tail pipe. The rainwater entering the exhaust tail pipe will flow down along the inner wall of the exhaust tail pipe and finally be discharged through the drainage hole. However, a very small part of the rainwater entering the exhaust tail pipe does not fall on the inner wall of the exhaust tail pipe, but directly splashes into the liner. There is a problem of rainwater entering the exhaust emission pipe, so it is necessary to study and design the above structure to design an exhaust emission structure that can effectively prevent rainwater. Summary of the invention
[0003] The purpose of the present invention is to address the deficiencies of the prior art and to provide a vehicle muffler exhaust device, the exhaust device of which is additionally provided with a rainproof component, the rainproof component has a simple structure and has a highly efficient rainproof effect; at the same time, it can be directly applied to the exhaust emission structure of existing vehicles, and the installation is also convenient and quick.
[0004] A vehicle muffler exhaust device comprises a vertical muffler at the end of the vehicle exhaust system, an exhaust tail pipe is arranged above the muffler, an inclined exhaust port is arranged at the top of the exhaust tail pipe, and a vertical rainwater protection component is arranged between the muffler and the exhaust tail pipe; The rainwater prevention component includes a vertical and elliptical guide shell, the upper and lower ends of the guide shell are respectively formed with an upper pipe and a lower pipe connected to the inner cavity of the guide shell, the lower pipe is plugged and fixed to the upper end of the muffler, and the upper pipe is plugged and fixed in the exhaust tail pipe; An inverted and conical guide hopper is inserted in the middle and lower parts of the inner cavity of the guide shell, and an annular exhaust flow channel is provided between the outer wall of the guide hopper and the inner wall of the guide shell; a plurality of oblique drainage pipes connected to the inner side of the guide hopper are inserted and fixed in the middle part of the guide hopper, and the lower ends of the drainage pipes are inserted and fixed on the guide shell and connected to the outer side of the guide shell; a water retaining ring with an arc-shaped cross-section is fixed on the outer wall of the upper part of the guide shell, and an annular water receiving trough is surrounded between the water retaining ring and the guide shell, and a plurality of guide pipes connected to the water receiving trough are inserted and fixed at the lower part of the water retaining ring, and the lower ends of the guide pipes are inserted in the guide hopper.
[0005] Preferably, the central axis of the guide bucket, the central axis of the guide shell, the central axis of the upper connecting pipe and the central axis of the lower connecting pipe are on the same straight line, and the upper end of the guide bucket is located in the middle of the guide shell.
[0006] Preferably, the inner diameter of the upper connecting pipe is equal to the inner diameter of the lower connecting pipe, and the inner diameter of the lower connecting pipe is smaller than the diameter of the inner circle of the upper end of the guide bucket.
[0007] Preferably, the center of the arc of the cross section of the water retaining ring is located outside the guide shell, and the central axis of the water retaining ring coincides with the central axis of the guide bucket; The diameter of the inner ring of the water retaining ring is smaller than the diameter of the inner ring of the upper end of the guide bucket and larger than the inner pipe diameter of the upper connecting pipe.
[0008] Preferably, the guide shell is composed of two semi-elliptical spherical shells, and the two spherical shells are welded and fixed together.
[0009] Preferably, three drain pipes and three guide pipes are provided, and the drain pipes and the guide pipes are evenly distributed in a ring shape around the central axis of the guide bucket.
[0010] Preferably, the lower end of the guide tube is bent to form a vertical insert tube; A conical auxiliary bracket is inserted on the inner side of the upper part of the guide bucket, and the auxiliary bracket includes a conical hub, and the outer ring of the hub is formed with a plurality of fan-shaped spokes, and the outer edges of the spokes are fixedly connected to the inner wall of the guide bucket; the spokes are formed with a plurality of vertical positioning holes, and the insert tubes are inserted in the positioning holes of the spokes.
[0011] Preferably, a vertical internal threaded connecting pipe is formed at the lower end of the exhaust tail pipe, and the upper connecting pipe of the guide shell is threadedly connected to the internal threaded connecting pipe of the exhaust tail pipe; vertical connecting pipes are respectively formed at the upper and lower ends of the muffler, and the lower connecting pipe of the guide shell is threadedly fixed in the connecting pipe at the upper end of the muffler.
[0012] The beneficial effects of the present invention are: The exhaust device is additionally provided with a rainproof component, which has a simple structure and a highly effective rainproof effect; at the same time, it can be directly applied to the tail gas emission structure of existing vehicles, and the installation is also convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention in a side view direction; Figure 4 It is a schematic diagram of the three-dimensional structure of the lower part of the rainproof component of the present invention.
[0014] In the figure: 1, muffler; 11, connecting pipe; 2, exhaust tail pipe; 21, internal threaded connecting pipe; 3, rainwater protection component; 31, guide shell; 311, lower connecting pipe; 312, upper connecting pipe; 32, guide bucket; 33, drain pipe; 34, water retaining ring; 35, guide pipe; 351, insert pipe; 36, auxiliary bracket; 361, hub; 362, spoke plate; 363, positioning hole. DETAILED DESCRIPTION
[0015] Example: See Figures 1 to 4 As shown, a vehicle muffler exhaust device comprises a vertical muffler 1 at the end of the vehicle exhaust system, an exhaust tail pipe 2 is arranged above the muffler 1, an oblique exhaust port is arranged at the top of the exhaust tail pipe 2, and a vertical rainwater protection component 3 is arranged between the muffler 1 and the exhaust tail pipe 2; The rainwater prevention component 3 includes a vertical and elliptical guide shell 31, and the upper and lower ends of the guide shell 31 are respectively formed with an upper pipe 312 and a lower pipe 311 connected to the inner cavity of the guide shell 31, the lower pipe 311 is plugged and fixed to the upper end of the muffler 1, and the upper pipe 312 is plugged and fixed in the exhaust tail pipe 2; An inverted and conical guide scoop 32 is inserted in the middle and lower parts of the inner cavity of the guide shell 31, and an annular exhaust flow channel a is provided between the outer wall of the guide scoop 32 and the inner wall of the guide shell 31; a plurality of oblique drainage pipes 33 connected to the inner side of the guide scoop 32 are inserted and fixed in the middle part of the guide scoop 32, and the lower ends of the drainage pipes 33 are inserted and fixed on the guide shell 31 and connected to the outer side of the guide shell 31; a water retaining ring 34 with an arc-shaped cross-section is fixed on the outer wall of the upper part of the guide shell 31, and an annular water receiving groove b is surrounded between the water retaining ring 34 and the guide shell 31, and a plurality of guide pipes 35 connected to the water receiving groove b are inserted and fixed at the lower part of the water retaining ring 34, and the lower ends of the guide pipes 35 are inserted in the guide scoop 32.
[0016] The central axis of the guide scoop 32, the central axis of the guide shell 31, the central axis of the upper connecting pipe 312 and the central axis of the lower connecting pipe 311 are on the same straight line. The upper end of the guide scoop 32 is located in the middle of the guide shell 31. The inner diameter of the middle of the guide shell 31 is the largest, and the diameter of the outer circle of the upper end of the guide scoop 32 is the largest, so as to avoid the narrowness of the exhaust flow channel a affecting the exhaust gas.
[0017] The inner diameter of the upper connecting pipe 312 is equal to that of the lower connecting pipe 311 , and the inner diameter of the lower connecting pipe 311 is smaller than the diameter of the inner circle of the upper end of the guide bucket 32 , so that rainwater entering the upper connecting pipe 312 either flows down along its pipe wall or falls into the guide bucket 32 .
[0018] The center of the arc of the cross section of the water retaining ring 34 is located outside the guide shell 31, and the central axis of the water retaining ring 34 coincides with the central axis of the guide bucket 32; The inner diameter of the water retaining ring 34 is smaller than the inner diameter of the upper end of the guide bucket 32 and larger than the inner diameter of the upper pipe 312 . The water retaining ring 34 can facilitate diversion without affecting rainwater falling into the guide bucket 32 .
[0019] The guide shell 31 is composed of two semi-elliptical spherical shells 313, and the two spherical shells 313 are welded and fixed together. According to the above-mentioned size limit, if the guide shell 31 is an integral body, its internal structure cannot enter the guide shell 31, so the guide shell 31 is a split structure. After the internal structure is assembled, the guide shell 31 can be formed by welding.
[0020] There are three drain pipes 33 and guide pipes 35, which are evenly distributed in a circular shape around the central axis of the guide bucket 32. There should not be too many drain pipes 33 and guide pipes 35, as too many will affect the exhaust, nor too few drain pipes 33 and guide pipes 35, as too few will affect the connection strength between the guide bucket 32 and the guide shell 31, thereby avoiding damage to the guide bucket 32 caused by the exhaust gas.
[0021] The lower end of the guide tube 35 is bent to form a vertical insert tube 351; A conical auxiliary bracket 36 is inserted into the inner side of the upper part of the guide bucket 32. The auxiliary bracket 36 includes a conical hub 361. The outer ring of the hub 361 is formed with a plurality of fan-shaped spokes 362. The outer side of the spokes 362 is fixedly connected to the inner side wall of the guide bucket 32. The spokes 362 are formed with a plurality of vertical positioning holes 363. The insert 351 is inserted into the positioning holes 363 of the spokes 362. The guide pipe 35 can be connected to the guide bucket 32 through the guide pipe 35, thereby improving the connection strength of the guide bucket 32. In addition, during the assembly process, glue can be applied to the outer wall of the insert 351. The guide pipe 35 and the auxiliary bracket 36 can be fixedly connected together by the glue, thereby further improving the strength of the guide bucket 32. Moreover, the auxiliary bracket 36 has other functions. Leaves or small branches will enter the guide shell 31 through the exhaust tail pipe 2. The auxiliary bracket 36 can block the leaves or small branches to avoid clogging the drain pipe 33. In addition, by removing the exhaust tail pipe 2, taking out the leaves or small branches from the guide shell 31 with tweezers, or removing the rainproof component 3 and turning it upside down, the internal debris can be poured out.
[0022] The lower end of the exhaust tail pipe 2 is formed with a vertical internal threaded pipe 21, and the upper pipe 312 of the guide shell 31 is screwed into the internal threaded pipe 21 of the exhaust tail pipe 2; the upper and lower ends of the muffler 1 are respectively formed with vertical connecting pipes 11, and the lower pipe 311 of the guide shell 31 is screwed and fixed in the connecting pipe 11 at the upper end of the muffler 1. The rainwater protection component 3 is connected to the vehicle exhaust system by screwing, which is convenient for assembly or disassembly.
[0023] Working principle: This structure is a vehicle muffler exhaust device, and the technical point of the device is reflected in the rainwater prevention component 3, and the rainwater prevention component 3 can be directly installed in the exhaust emission structure of the existing vehicle; At the same time, the technical point of the rainwater protection component 3 is that it has an efficient rainproof function, and the rainwater entering from the exhaust tail pipe 2 either falls on the inner wall of the exhaust tail pipe 2 or falls directly without contacting the inner wall of the exhaust tail pipe 2; The rainwater that falls directly will fall into the diversion bucket 32 and be received in the diversion bucket 32. The water in the diversion bucket 32 rises to the drain pipe 33. The water that does not pass the drain pipe 33 can be discharged through the drain pipe 33. Rainwater falling on the inner wall of the exhaust tail pipe 2 will flow down along its inner wall to the inner wall of the guide shell 31, and finally be collected in the water receiving trough b, or during the downstream process, the rainwater gathers and drips, and the dripping process occurs on the upper side of the water receiving trough b, and the dripping also falls into the guide bucket 32; therefore, it can effectively prevent rainwater from entering the exhaust tail pipe 2 and other exhaust pipes outside the rainwater protection component 3.
[0024] The embodiments are used to illustrate the present invention, but not to limit the present invention. Any person skilled in the art may modify the embodiments without violating the spirit and scope of the present invention, and therefore, the scope of protection of the present invention shall be as set forth in the claims of the present invention.
Claims
1. A vehicle muffler exhaust device, comprising a muffler (1) at the end of a vehicle exhaust system in an upright position, an exhaust tail pipe (2) being arranged above the muffler (1), and an oblique exhaust port being arranged at the top of the exhaust tail pipe (2), characterized in that: A vertical rainwater protection component (3) is provided between the muffler (1) and the exhaust tail pipe (2); The rainwater protection component (3) comprises a vertical and elliptical flow guide shell (31), the upper and lower ends of the flow guide shell (31) are respectively formed with an upper pipe (312) and a lower pipe (311) which are in communication with the inner cavity of the flow guide shell (31), the lower pipe (311) is plugged and fixed to the upper end of the muffler (1), and the upper pipe (312) is plugged and fixed in the exhaust tail pipe (2); An inverted and conical flow guide hopper (32) is inserted in the middle and lower parts of the inner cavity of the flow guide shell (31), and an annular exhaust flow channel (a) is provided between the outer wall of the flow guide hopper (32) and the inner wall of the flow guide shell (31); a plurality of oblique drainage pipes (33) connected to the inner side of the flow guide hopper (32) are inserted and fixed in the middle part of the flow guide hopper (32), and the lower ends of the drainage pipes (33) are inserted and fixed on the flow guide shell (31) and connected to the outer side of the flow guide shell (31); a water retaining ring (34) with a circular arc cross section is fixed on the outer wall of the upper part of the flow guide shell (31), and an annular water receiving groove (b) is formed between the water retaining ring (34) and the flow guide shell (31); a plurality of flow guide pipes (35) connected to the water receiving groove (b) are inserted and fixed at the lower part of the water retaining ring (34), and the lower ends of the flow guide pipes (35) are inserted in the flow guide hopper (32).
2. A vehicle muffler exhaust device according to claim 1, characterized in that: The central axis of the guide scoop (32), the central axis of the guide shell (31), the central axis of the upper connecting pipe (312), and the central axis of the lower connecting pipe (311) are on the same straight line, and the upper end of the guide scoop (32) is located in the middle of the guide shell (31).
3. A vehicle muffler exhaust device according to claim 2, characterized in that: The inner diameter of the upper connecting pipe (312) is equal to the inner diameter of the lower connecting pipe (311), and the inner diameter of the lower connecting pipe (311) is smaller than the diameter of the inner circle at the upper end of the guide bucket (32).
4. A vehicle muffler exhaust device according to claim 3, characterized in that: The center of the circular arc of the cross section of the water retaining ring (34) is located outside the guide shell (31), and the central axis of the water retaining ring (34) coincides with the central axis of the guide bucket (32); The diameter of the inner ring of the water retaining ring (34) is smaller than the diameter of the inner ring of the upper end of the guide bucket (32) and larger than the inner pipe diameter of the upper pipe (312).
5. A vehicle muffler exhaust device according to claim 4, characterized in that: The guide shell (31) is composed of two semi-elliptical spherical shells (313), and the two spherical shells (313) are welded together.
6. A vehicle muffler exhaust device according to claim 2, characterized in that: The drainage pipes (33) and the guide pipes (35) are each provided in three pieces, and the drainage pipes (33) and the guide pipes (35) are evenly distributed in a ring shape around the central axis of the guide bucket (32).
7. A vehicle muffler exhaust device according to claim 5, characterized in that: The lower end of the guide tube (35) is bent to form a vertical insert tube (351); A conical auxiliary bracket (36) is inserted into the inner side of the upper part of the guide bucket (32). The auxiliary bracket (36) comprises a conical hub (361). The outer ring of the hub (361) is formed with a plurality of fan-shaped spokes (362). The outer sides of the spokes (362) are fixedly connected to the inner side wall of the guide bucket (32). The spokes (362) are formed with a plurality of vertical positioning holes (363). The insertion tube (351) is inserted into the positioning holes (363) of the spokes (362).
8. A vehicle muffler exhaust device according to claim 1, characterized in that: The lower end of the exhaust tail pipe (2) is formed with a vertical internally threaded connecting pipe (21), and the upper connecting pipe (312) of the guide shell (31) is screwed into the internally threaded connecting pipe (21) of the exhaust tail pipe (2); the upper and lower ends of the muffler (1) are respectively formed with vertical connecting pipes (11), and the lower connecting pipe (311) of the guide shell (31) is screwed and fixed into the connecting pipe (11) at the upper end of the muffler (1).