CN117846744B - Noise reduction equipment for engine exhaust - Google Patents
Noise reduction equipment for engine exhaust Download PDFInfo
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- CN117846744B CN117846744B CN202410261844.5A CN202410261844A CN117846744B CN 117846744 B CN117846744 B CN 117846744B CN 202410261844 A CN202410261844 A CN 202410261844A CN 117846744 B CN117846744 B CN 117846744B
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- 230000009467 reduction Effects 0.000 title claims description 11
- 238000001816 cooling Methods 0.000 claims abstract description 88
- 230000030279 gene silencing Effects 0.000 claims abstract description 24
- 239000000110 cooling liquid Substances 0.000 claims description 16
- 230000005389 magnetism Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 230000001743 silencing effect Effects 0.000 abstract description 8
- 230000004888 barrier function Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910000828 alnico Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust Silencers (AREA)
Abstract
The application relates to silencing and noise reducing equipment for engine exhaust, which comprises a shell, an air inlet pipe, an exhaust pipe and a cooling assembly, wherein the shell is provided with a first air inlet pipe and a second air inlet pipe; the shell is internally provided with a silencing chamber, a first end of the air inlet pipe is positioned outside the shell, and a second end of the air inlet pipe is connected with the inner wall of the end part of the silencing chamber; one end of the exhaust pipe is positioned in the silencing chamber, and the other end of the exhaust pipe is positioned outside the shell; be provided with a plurality of gas pockets and baffle in the intake pipe, baffle slidable mounting is in the intake pipe, the gas pocket be used for with the air current in the intake pipe is discharged to in the anechoic chamber, the baffle with be provided with the piece that resets between the second end of intake pipe, be provided with the drive in the intake pipe the first driving piece that the baffle removed, first driving piece passes through the air current drive in the intake pipe. According to the application, the number of air holes for carrying out air flow exchange is dynamically adjusted according to the air flow speed, uniform exhaust is realized, and the silencing effect is improved.
Description
Technical Field
The invention relates to the technical field of silencing equipment, in particular to silencing and noise reducing equipment for engine exhaust.
Background
Currently, engine exhaust noise is one of the main sources of noise for automotive equipment, and the noise generated by the engine exhaust noise has high-frequency sharp and harsh components. To reduce exhaust noise, exhaust silencers are commonly used for exhaust, and silencers are also the most effective means of noise reduction commonly used for controlling exhaust noise. The muffler is a device which is arranged on an airflow channel of aerodynamic equipment or in an air inlet and exhaust system and used for reducing noise, and the muffler can block the propagation of sound waves and allow airflow to pass through, so that the muffler is an effective tool for controlling noise.
In the related art, although the exhaust muffler can perform noise reduction, when the air flow speed of the air inlet end suddenly becomes high, the exhaust flow rate inside the muffler cannot be adjusted accordingly, and the noise reduction effect of the exhaust muffler is affected.
The present application has been made to solve the above-mentioned problems.
Disclosure of Invention
Aiming at the problems in the prior art, the application discloses a technical scheme which specifically comprises the following steps: an engine exhaust muffling and noise reduction device comprises a shell, an air inlet pipe, an exhaust pipe and a cooling assembly; the shell is internally provided with a silencing chamber, a first end of the air inlet pipe is positioned outside the shell, and a second end of the air inlet pipe is connected with the inner wall of the end part of the silencing chamber; one end of the exhaust pipe is positioned in the silencing chamber, and the other end of the exhaust pipe is positioned outside the shell; the air inlet pipe is provided with a plurality of air holes and a baffle plate, the baffle plate is slidably arranged in the air inlet pipe, the air holes are used for discharging air flow in the air inlet pipe into the silencing chamber, a reset piece is arranged between the baffle plate and the second end of the air inlet pipe, a first driving piece for driving the baffle plate to move is arranged in the air inlet pipe, and the first driving piece is driven by the air flow in the air inlet pipe; the cooling assembly comprises a cooling tank, a cooling plate and two cooling pipes, wherein the cooling plate is sleeved outside the air inlet pipe, the cooling tank is arranged outside the shell and used for storing cooling liquid, the cooling pipes are communicated with the cooling tank and the cooling plate, a second driving part for driving the cooling liquid to circularly flow is arranged on the air inlet pipe, and the second driving part is driven by air flow in the air inlet pipe.
Illustratively, the first driving member includes a wind shield rotatably mounted in the air inlet pipe, the wind shield is connected with a hinge rod, a driving rod is movably mounted in the air inlet pipe, one end of the driving rod is connected with the hinge rod, the other end of the driving rod is connected with the baffle, and two ends of the hinge rod are respectively hinged with the wind shield and the driving rod.
The first driving members are disposed in the air intake pipe in two groups, and the two groups of the first driving members are disposed in the air intake pipe symmetrically with respect to an axis of the air intake pipe as a center.
Illustratively, the cooling pipes comprise a first cooling pipe and a second cooling pipe, a flow groove is arranged in the cooling plate, the flow groove is annular, a first opening and a second opening are arranged on the flow groove, the first opening is communicated with the first cooling pipe, and the second opening is communicated with the second cooling pipe; the second driving piece is used for driving the arc-shaped plate to slide along the flow groove so that cooling liquid enters the second cooling pipe from the first cooling pipe.
The second driving part comprises a driving ring sleeved on the air inlet pipe, the driving ring is rotationally connected with the air inlet pipe, and the rotation center line of the driving ring coincides with the axis of the air inlet pipe; the connecting ring is rotatably arranged on the air inlet pipe and is rotatably connected with the air inlet pipe, and the rotation centers of the connecting ring and the driving ring are coincident; the connecting ring is provided with a first inner magnet, the driving ring is provided with a first outer magnet, and the magnetism of one side, close to the first inner magnet, of the first outer magnet is opposite; the telescopic ring is provided with a telescopic rod, the end part of the telescopic rod is provided with a second outer magnet, the cooling plate is provided with an annular groove for accommodating the second outer magnet, the arc plate is provided with a second inner magnet matched with the second outer magnet, and the magnetism of one side, close to each other, of the second outer magnet is opposite to that of one side, close to each other, of the second inner magnet.
The fan comprises a connecting ring, a plurality of fan blades, an air inlet pipe, an air outlet pipe, a connecting ring and an air inlet pipe, wherein the fan blades are arranged in the connecting ring, one end of each fan blade is located in the air inlet pipe, the other end of each fan blade is connected with the inner side wall of the connecting ring, and air flow in the air inlet pipe drives the fan blades to rotate so as to drive the connecting ring to rotate.
Illustratively, the telescopic rod comprises a connecting pipe arranged on the driving ring and a movable rod arranged in the connecting pipe, one end of the connecting pipe is closed, the other end of the connecting pipe is open, a piston is arranged in the connecting pipe and is slidably installed in the connecting pipe, one end of the movable rod is connected with the piston, and the other end of the movable rod extends to the outside of the connecting pipe and is connected with the second external magnet.
Illustratively, the return member includes a return spring, one end of the return spring is connected to the inner wall of the housing, and the other end of the return spring is connected to the baffle.
Illustratively, the air holes are uniformly arranged on the air inlet pipe.
The application has at least the following technical effects: when the air flow passes through the air inlet pipe, the air enters the silencing chamber through the air holes and is discharged through the exhaust pipe, and when the speed of the air flow rises, the baffle is driven to move by the first driving piece, so that the number of air holes for exhausting in the air inlet pipe is increased, uniform exhaust is realized, dynamic adjustment is realized according to the speed of the air flow, and extra noise caused by the rising of the speed of the air flow is reduced; the cooling assembly can cool the air inlet pipe, so that the air inlet pipe is more resistant to high temperature, and the service life of the air inlet pipe is prolonged.
Drawings
Fig. 1 is a schematic main structure of an apparatus according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an internal structure of an apparatus according to an embodiment of the present application.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is an enlarged view of part B of fig. 2.
Fig. 5 is a schematic diagram of a cooling plate structure according to an embodiment of the present application.
FIG. 6 is a schematic view of the interior of a cooling plate according to an embodiment of the present application.
Reference numerals: 1. a housing; 11. a sound deadening chamber; 2. an air inlet pipe; 21. air holes; 3. an exhaust pipe; 4. a cooling tank; 41. a first cooling tube; 42. a second cooling tube; 43. a cooling plate; 44. an annular groove; 45. a flow channel; 46. an arc-shaped plate; 47. a second internal magnet; 5. a baffle; 51. a reset member; 6. a first driving member; 61. a wind shielding sheet; 62. a hinge rod; 63. a driving rod; 7. a second driving member; 71. a drive ring; 72. a connecting ring; 73. a first internal magnet; 74. a first external magnet; 75. a fan blade; 76. a second external magnet; 8. a telescopic rod; 81. a connecting pipe; 82. a piston; 83. a movable rod.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application; it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the protection scope of the present application.
Referring to fig. 1 to 6, an embodiment of the present application provides a noise reduction and noise reduction apparatus for engine exhaust, including a housing 1, an intake pipe 2, an exhaust pipe 3, and a cooling assembly.
Wherein, shell 1 sets up to hollow and both ends are sealed, is provided with amortization room 11 in shell 1, and the first end of intake pipe 2 is located the outside of shell 1, and the tip inner wall of amortization room 11 is connected to the second end. One end of the exhaust pipe 3 is located in the sound deadening chamber 11, and the other end is located outside the casing 1. The air intake pipe 2 is provided with a plurality of air holes 21, and the air holes 21 are uniformly distributed on the air intake pipe 2. After the air flow enters the air inlet pipe 2, the air flow can be discharged into the silencing chamber 11 through the air hole 21, then enters the exhaust pipe 3 through the silencing chamber 11, and finally is discharged through the exhaust pipe 3. In this process, because of the structures of the housing 1, the intake pipe 2, and the exhaust pipe 3, the silencing effect of the gas discharge can be achieved. Wherein, can fill materials such as amortization cotton in the casing of shell 1 to promote amortization performance.
A baffle 5 is further provided on the intake pipe 2, the baffle 5 being slidably mounted in the intake pipe 2, and an air hole 21 for discharging the air flow in the intake pipe 2 into the sound deadening chamber 11. And the number of the air holes 21 for air flow exchange can be changed as the shutter 5 slides. A reset piece 51 is arranged between the baffle 5 and the second end of the air inlet pipe 2, a first driving piece 6 for driving the baffle 5 to move is arranged in the air inlet pipe 2, and the first driving piece 6 is driven by air flow in the air inlet pipe 2. When the air flow speed is higher, the baffle plate 5 can be made to move towards the direction of the reset piece 51, so that the number of the air holes 21 for air flow exchange is increased, the air flow exchange is convenient, the air flow exchange speed of the air holes 21 is avoided to be higher, additional noise is generated, and the silencing effect is improved. When the air flow speed is low, the baffle plate 5 returns to the initial position under the action of the reset piece 51, and the number of the air holes 21 for air flow exchange also returns to the initial number, so that dynamic adjustment is realized according to the air flow speed.
The cooling assembly comprises a cooling tank 4, a cooling plate 43 and two cooling pipes, wherein the cooling plate 43 is sleeved outside the air inlet pipe 2, the cooling tank 4 is arranged outside the shell 1 and is used for storing cooling liquid, the cooling pipes are communicated with the cooling tank 4 and the cooling plate 43, a second driving piece 7 for driving the cooling liquid to circularly flow is arranged on the air inlet pipe 2, and the second driving piece 7 is driven by air flow in the air inlet pipe 2. Wherein the cooling pipes comprise a first cooling pipe 41 and a second cooling pipe 42. The air inlet pipe 2 can be cooled through the cooling liquid in the cooling tank 4, so that the temperature of the air inlet pipe 2 is reduced, and the whole silencing and noise reducing device is more high-temperature resistant and can prolong the service life.
The first driving member 6 in the embodiment of the present application will be described below. The first driving member 6 includes a wind shielding plate 61 rotatably installed in the air intake pipe 2, the wind shielding plate 61 is connected with a hinge rod 62, a driving rod 63 is movably installed in the air intake pipe 2, one end of the driving rod 63 is connected with the hinge rod 62, the other end is connected with the baffle 5, and two ends of the hinge rod 62 are respectively hinged with the wind shielding plate 61 and the driving rod 63. The first driving members 6 are provided in two groups in the intake duct 2, and the two groups of first driving members 6 are provided in the intake duct 2 symmetrically with respect to the axis of the intake duct 2. Illustratively, the return member 51 comprises a return spring, one end of which is connected to the inner wall of the housing 1 and the other end of which is connected to the baffle 5.
The wind shielding piece 61 is provided in the intake duct 2 and hinged to the intake duct 2, and the elastic force of the return member 51 acts on the barrier 5, and the barrier 5 acts on the hinge lever 62 and the wind shielding piece 61 through the driving lever 63, so that the wind shielding piece 61 is in an inclined state. When the air flow speed in the air intake duct 2 increases, the force of the air flow acting on the wind shielding plate 61 increases, so that the wind shielding plate 61 rotates in the direction of the inner wall of the air intake duct 2, the wind shielding plate 61 acts on the hinge lever 62, the hinge lever 62 acts on the driving lever 63, the driving lever 63 is moved when the wind shielding plate 61 rotates, the driving lever 63 acts on the barrier 5, and the barrier 5 horizontally moves in the direction of the return member 51. After moving, the baffle 5 increases the number of the air holes 21 for air flow exchange, thereby facilitating the air flow exchange, avoiding the extra noise generated by the faster air flow exchange speed of the air holes 21, and improving the silencing effect. When the air flow speed is low, the baffle plate 5 returns to the initial position under the action of the reset piece 51, and the number of the air holes 21 for air flow exchange also returns to the initial number, so that dynamic adjustment is realized according to the air flow speed.
The cooling assembly and the second drive member 7 are further described below. The cooling pipes include a first cooling pipe 41 and a second cooling pipe 42, a flow groove 45 is provided in the cooling plate 43, the flow groove 45 is annular, a first opening and a second opening are provided in the flow groove 45, the first opening is communicated with the first cooling pipe 41, and the second opening is communicated with the second cooling pipe 42. An arc-shaped plate 46 is movably mounted in the flow groove 45, and the second driving member 7 is used for driving the arc-shaped plate 46 to slide along the flow groove 45 so as to enable the cooling liquid to enter the second cooling pipe 42 from the first cooling pipe 41.
The second driving piece 7 comprises a driving ring 71 sleeved on the air inlet pipe 2, the driving ring 71 is rotationally connected with the air inlet pipe 2, and the rotation center line of the driving ring 71 is coincident with the axis of the air inlet pipe 2; the air inlet pipe 2 is rotatably provided with a connecting ring 72, the connecting ring 72 is rotatably connected with the air inlet pipe 2, and the rotation centers of the connecting ring 72 and the driving ring 71 are coincident; the first inner magnet 73 is arranged on the connecting ring 72, the first outer magnet 74 is arranged on the driving ring 71, and the magnetism of the side, close to each other, of the first inner magnet 73 and the first outer magnet 74 is opposite; the driving ring 71 is provided with a telescopic rod 8, the end part of the telescopic rod 8 is provided with a second external magnet 76, the cooling plate 43 is provided with an annular groove 44 for accommodating the second external magnet 76, the arc plate 46 is provided with a second internal magnet 47 matched with the second external magnet 76, and the magnetism of the side, close to each other, of the second external magnet 76 and the second internal magnet 47 is opposite.
The telescopic rod 8 includes a connection pipe 81 provided on the driving ring 71 and a movable rod 83 provided in the connection pipe 81, one end of the connection pipe 81 is closed and the other end is opened, a piston 82 is provided in the connection pipe 81, the piston 82 is slidably mounted in the connection pipe 81, one end of the movable rod 83 is connected to the piston 82, and the other end extends to the outside of the connection pipe 81 and is connected to the second external magnet 76.
The magnets in the embodiments of the present application may be, for example, alnico magnets, which have higher high temperature resistance and are convenient to use under the working conditions of the embodiments of the present application.
With the passing of the air flow, the temperature of the whole air inlet pipe 2 rises, after the temperature of the air inlet pipe 2, the driving ring 71 and the connecting pipe 81 rises, the air pressure in the connecting pipe 81 is increased, the piston 82 moves towards the cooling plate 43 under the action of the air pressure, the movable rod 83 is driven and driven to move in the moving process, and the second external magnet 76 at the end part of the movable rod 83 finally enters the annular groove 44 of the cooling plate 43 to be matched with the cooling plate 43. When the connecting ring 72 rotates, the driving ring 71 is driven to rotate by the first inner magnet 73 and the first outer magnet 74, and when the driving ring 71 rotates, the telescopic rod 8 and the second outer magnet 76 are driven to rotate, and the second outer magnet 76 and the arc plate 46 are matched to drive the arc plate 46 to rotate. Because the first opening in the flow groove 45 communicates with the first cooling tube 41, when the arc plate 46 rotates, part of the cooling liquid will enter the flow groove 45 from the first cooling tube 41 through the first opening, after which the arc plate 46 continues to rotate, this part of the cooling liquid will enter the second cooling tube 42 through the second opening, and finally return to the cooling tank 4, thereby realizing the circulation of the cooling liquid in the cooling plate 43. Although the cooling tank 4 covers the whole housing 1, the cooling liquid itself can flow, the flow of the liquid in the cooling plate 43 can be accelerated by the action of the second driving member 7, so that the effect of accelerating circulation is achieved, and the cooling of the air inlet pipe 2 is performed better.
The connecting ring 72 is provided with a plurality of fan blades 75, one end of each fan blade 75 is positioned in the air inlet pipe 2, the other end of each fan blade is connected with the inner side wall of the connecting ring 72, and air flow in the air inlet pipe 2 drives the fan blades 75 to rotate so as to drive the connecting ring 72 to rotate. Because the fan blades 75 are arranged in the air inlet pipe 2, when the air flow passes through, the fan blades 75 are driven to rotate, so that the connecting ring 72 is driven to rotate, when the connecting ring 72 rotates, the first inner magnet 73 and the first outer magnet 74 drive the driving ring 71 to rotate, and the telescopic rod 8 and the arc-shaped plate 46 in the cooling plate 43 are driven to rotate under the action of the driving ring 71, so that the circulation effect of cooling liquid is realized.
Further, if the related art structure without the cooling assembly and the wind shielding plate 61 is adopted, when the speed of the air flow suddenly rises, it is likely that the air flow is rapidly discharged from the air hole 21 near the intake side due to the flow rate and the air pressure, and the driving of the baffle 5 is not performed. Thus, the noise reduction effect is affected by the extra noise caused by the fast exhaust air flow.
With the above structure of the present application, since the power of the fan blade 75 is derived from the air flow in the air inlet pipe 2, when the speed of the air flow suddenly increases, the power is converted through the fan blade 75 and the baffle 5, instead of directly entering the air hole 21 for air flow exchange. Therefore, under the condition that the air flow rises rapidly, the air flow is not discharged rapidly through the air holes 21 contacted at first, but is discharged more uniformly through the air holes 21, so that noise generated by speed change is further reduced, and the silencing effect is improved.
The technical effects and working principles of the embodiment of the application are as follows:
When the air flow speed of the air intake pipe 2 is low, the elastic force of the return member 51 acts on the barrier 5, and the barrier 5 acts on the hinge lever 62 and the windshield 61 through the driving lever 63, so that the windshield 61 is in an inclined state. When the air flow speed in the air intake duct 2 increases, the force of the air flow acting on the wind shielding plate 61 increases, so that the wind shielding plate 61 rotates in the direction of the inner wall of the air intake duct 2, the wind shielding plate 61 acts on the hinge lever 62, the hinge lever 62 acts on the driving lever 63, the driving lever 63 is moved when the wind shielding plate 61 rotates, the driving lever 63 acts on the barrier 5, and the barrier 5 horizontally moves in the direction of the return member 51. After the baffle 5 moves, the number of the air holes 21 for air flow exchange is increased, so that the air flow exchange is facilitated, the air flow exchange speed of the air holes 21 is prevented from being higher, additional noise is generated, and the silencing effect is improved. When the air flow speed is low, the baffle plate 5 can return to the initial position under the action of the reset piece 51, and the number of the air holes 21 for air flow exchange also returns to the initial number, so that dynamic adjustment is realized according to the air flow speed, and the silencing effect is improved.
In addition, with the temperature rise and the acceleration of the air flow, the air pressure in the connecting pipe 81 is increased, the piston 82 moves towards the cooling plate 43 under the action of the air pressure, and the movable rod 83 is driven to move in the moving process, and the second external magnet 76 at the end part of the movable rod 83 finally enters the annular groove 44 of the cooling plate 43 to be matched with the cooling plate 43. When the air flow passes through the fan blades 75, the fan blades 75 and the connecting ring 72 are driven to rotate, when the connecting ring 72 rotates, the driving ring 71 is driven to rotate through the first inner magnet 73 and the first outer magnet 74, and when the driving ring 71 rotates, the telescopic rod 8 and the second outer magnet 76 are driven to rotate, and the second outer magnet 76 is matched with the arc plate 46 to drive the arc plate 46 to rotate. Thereby realizing the circulation of the cooling liquid in the cooling plate 43, thereby effectively cooling the air inlet pipe 2 and prolonging the service life of the air inlet pipe 2.
In addition, since the fan blade 75 and the wind shielding plate 61 are both closer to the air inlet end of the air inlet pipe 2, when the speed of the air flow suddenly increases, the air flow is exchanged through the air hole 21 after power conversion is performed through the fan blade 75 and the baffle plate 5. When the air current passes through the air holes 21, the air current which can be more gentle is discharged more evenly through a plurality of air holes 21, noise generated by speed change is further reduced, and the silencing effect is improved.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (8)
1. An engine exhaust silencing and noise reducing device is characterized by comprising a shell (1), an air inlet pipe (2), an exhaust pipe (3) and a cooling assembly;
A silencing chamber (11) is arranged in the shell (1), a first end of the air inlet pipe (2) is positioned outside the shell (1), and a second end of the air inlet pipe is connected with the inner wall of the end part of the silencing chamber (11); one end of the exhaust pipe (3) is positioned in the silencing chamber (11), and the other end of the exhaust pipe is positioned outside the shell (1);
The air inlet pipe (2) is provided with a plurality of air holes (21) and a baffle plate (5), the baffle plate (5) is slidably arranged in the air inlet pipe (2), the air holes (21) are used for discharging air flow in the air inlet pipe (2) into the silencing chamber (11), a reset piece (51) is arranged between the baffle plate (5) and the second end of the air inlet pipe (2), a first driving piece (6) for driving the baffle plate (5) to move is arranged in the air inlet pipe (2), and the first driving piece (6) is driven by the air flow in the air inlet pipe (2);
The cooling assembly comprises a cooling tank (4), a cooling plate (43) and two cooling pipes, wherein the cooling plate (43) is sleeved outside the air inlet pipe (2), the cooling tank (4) is arranged outside the shell (1) and is used for storing cooling liquid, the cooling pipes are communicated with the cooling tank (4) and the cooling plate (43), a second driving piece (7) for driving the cooling liquid to circularly flow is arranged on the air inlet pipe (2), and the second driving piece (7) is driven by air flow in the air inlet pipe (2);
The cooling pipes comprise a first cooling pipe (41) and a second cooling pipe (42), a flow groove (45) is formed in the cooling plate (43), the flow groove (45) is annular, a first opening and a second opening are formed in the flow groove (45), the first opening is communicated with the first cooling pipe (41), and the second opening is communicated with the second cooling pipe (42); an arc-shaped plate (46) is movably arranged in the flow groove (45), and the second driving piece (7) is used for driving the arc-shaped plate (46) to slide along the flow groove (45) so as to enable cooling liquid to enter the second cooling pipe (42) from the first cooling pipe (41).
2. The silencing and noise-reducing device for engine exhaust according to claim 1, wherein the first driving member (6) comprises a wind shield (61) rotatably installed in the air inlet pipe (2), the wind shield (61) is connected with a hinge rod (62), a driving rod (63) is movably installed in the air inlet pipe (2), one end of the driving rod (63) is connected with the hinge rod (62), the other end of the driving rod is connected with the baffle plate (5), and two ends of the hinge rod (62) are hinged with the wind shield (61) and the driving rod (63) respectively.
3. The noise reduction device for engine exhaust gas according to claim 2, wherein the first driving members (6) are provided in two groups in the intake pipe (2), and the two groups of the first driving members (6) are provided in the intake pipe (2) symmetrically with respect to an axis of the intake pipe (2).
4. A silencing and noise-reducing device for engine exhaust according to claim 3, characterized in that the second driving member (7) comprises a driving ring (71) sleeved on the air inlet pipe (2), the driving ring (71) is rotationally connected with the air inlet pipe (2), and the rotation center line of the driving ring (71) coincides with the axis of the air inlet pipe (2); a connecting ring (72) is rotatably arranged on the air inlet pipe (2), the connecting ring (72) is rotatably connected with the air inlet pipe (2), and the rotation centers of the connecting ring (72) and the driving ring (71) are coincident; a first inner magnet (73) is arranged on the connecting ring (72), a first outer magnet (74) is arranged on the driving ring (71), and the magnetism of one side, close to each other, of the first inner magnet (73) and the magnetism of one side, close to each other, of the first outer magnet (74) are opposite; be provided with telescopic link (8) on driving ring (71), the tip of telescopic link (8) is provided with second external magnet (76), be provided with on cooling plate (43) and hold ring channel (44) of second external magnet (76), be provided with on arc (46) with second external magnet (76) complex second internal magnet (47), second external magnet (76) with one side magnetism that second internal magnet (47) are close to each other is opposite.
5. The silencing and noise-reducing device for engine exhaust according to claim 4, wherein a plurality of fan blades (75) are arranged in the connecting ring (72), one end of each fan blade (75) is located in the air inlet pipe (2), the other end of each fan blade is connected with the inner side wall of the connecting ring (72), and air flow in the air inlet pipe (2) drives the fan blades (75) to rotate so as to drive the connecting ring (72) to rotate.
6. The noise reduction device for engine exhaust gas according to claim 5, wherein the telescopic rod (8) includes a connection pipe (81) provided on the drive ring (71) and a movable rod (83) provided in the connection pipe (81), one end of the connection pipe (81) is closed and the other end is open, a piston (82) is provided in the connection pipe (81), the piston (82) is slidably mounted in the connection pipe (81), one end of the movable rod (83) is connected to the piston (82), and the other end extends to the outside of the connection pipe (81) and is connected to the second external magnet (76).
7. A silencing and noise-reducing device for engine exhaust according to any of claims 1-6, wherein the return member (51) comprises a return spring, one end of which is connected to the inner wall of the housing (1), and the other end of which is connected to the baffle plate (5).
8. A silencing and noise-reducing device for engine exhaust according to any of claims 1-6, wherein the air holes (21) are evenly arranged on the air intake pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410261844.5A CN117846744B (en) | 2024-03-07 | 2024-03-07 | Noise reduction equipment for engine exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410261844.5A CN117846744B (en) | 2024-03-07 | 2024-03-07 | Noise reduction equipment for engine exhaust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117846744A CN117846744A (en) | 2024-04-09 |
| CN117846744B true CN117846744B (en) | 2024-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410261844.5A Active CN117846744B (en) | 2024-03-07 | 2024-03-07 | Noise reduction equipment for engine exhaust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117846744B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191028981A (en) * | 1910-12-13 | 1911-12-13 | Ivan Antonowitsch Stroganoff | Improvements in Water-cooled Exhaust Silencers. |
| KR20050107829A (en) * | 2004-05-10 | 2005-11-16 | 현대자동차주식회사 | Apparatus to reduce the exhaust pressure of muffler |
| CN103437875A (en) * | 2013-08-30 | 2013-12-11 | 上海三一重机有限公司 | Equipment for reducing engineering mechanical engine exhaust noise and engineering machine |
| KR20160053568A (en) * | 2014-11-05 | 2016-05-13 | 현대자동차주식회사 | Turbo charger exhaust noise decreasing device |
| CN108223330A (en) * | 2018-02-08 | 2018-06-29 | 衡阳泰豪通信车辆有限公司 | A kind of pumping plant of Low target feature |
| CN112392579A (en) * | 2019-08-11 | 2021-02-23 | 新沂市卡尔曼机车配件有限公司 | Automobile exhaust pipe with good heat dissipation effect |
-
2024
- 2024-03-07 CN CN202410261844.5A patent/CN117846744B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191028981A (en) * | 1910-12-13 | 1911-12-13 | Ivan Antonowitsch Stroganoff | Improvements in Water-cooled Exhaust Silencers. |
| KR20050107829A (en) * | 2004-05-10 | 2005-11-16 | 현대자동차주식회사 | Apparatus to reduce the exhaust pressure of muffler |
| CN103437875A (en) * | 2013-08-30 | 2013-12-11 | 上海三一重机有限公司 | Equipment for reducing engineering mechanical engine exhaust noise and engineering machine |
| KR20160053568A (en) * | 2014-11-05 | 2016-05-13 | 현대자동차주식회사 | Turbo charger exhaust noise decreasing device |
| CN108223330A (en) * | 2018-02-08 | 2018-06-29 | 衡阳泰豪通信车辆有限公司 | A kind of pumping plant of Low target feature |
| CN112392579A (en) * | 2019-08-11 | 2021-02-23 | 新沂市卡尔曼机车配件有限公司 | Automobile exhaust pipe with good heat dissipation effect |
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|---|---|
| CN117846744A (en) | 2024-04-09 |
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