WO2023226780A1

WO2023226780A1 - Carbon deposit self-cleaning type exhaust pipe

Info

Publication number: WO2023226780A1
Application number: PCT/CN2023/093582
Authority: WO
Inventors: 刘洪菲; 祝志钢; 卢媛媛; 张玉玉; 屠西悦
Original assignee: 安徽信息工程学院
Priority date: 2022-05-27
Filing date: 2023-05-11
Publication date: 2023-11-30
Also published as: LU504320B1; CN114776425A

Abstract

The present invention relates to the field of vehicles. Disclosed is a carbon deposit self-cleaning type exhaust pipe, comprising an exhaust pipe, a fixing frame, a cleaning device, an internal magnetic assembly, a driving device, and an external magnetic assembly; the fixing frame is fixedly connected to the exhaust pipe, and a sliding shaft is fixedly connected to the center of the fixing frame; an internal support frame is fixedly connected to the right end of the sliding shaft, the cleaning device is slidably connected to the sliding shaft, and the driving device is provided on the outer side of the fixing frame and the outer side of the exhaust pipe; when a rotating cylinder rotates, by means of an acting force of a groove against a roller, the external magnetic assembly reciprocates on the outer side of the exhaust pipe to drive an internal impeller to move on the sliding shaft. The problem of hard-to-clean areas caused by fixed position of an internal impeller is solved, and the problems of reduced space of exhaust pipes and unsmooth exhaust discharge caused by provision of a plurality of cleaning devices are also avoided; an air flow is used as a driving force for rotation of both brush strips and the rotating cylinder, and there is no need to additionally provide an actuator and a sensor, so that carbon deposit cleaning work for the exhaust pipe is more stable and reliable.

Description

A carbon-deposited self-cleaning exhaust pipe

Technical field

The invention relates to the field of automobiles, and in particular to a carbon-deposited self-cleaning exhaust pipe.

Background technique

The automobile exhaust pipe is a part used by automobiles to treat exhaust gases and plays an important role in automobile exhaust emissions. Since automobile exhaust contains a large amount of solid suspended particles, carbon monoxide, carbon dioxide and other compounds, especially when combustion is incomplete, the amount of such particles will be greater. These particulate matter can easily deposit carbon on the car exhaust pipe during the discharge process. Over time, the exhaust pipe will not flow smoothly, affecting the normal use of the car. Since the exhaust pipe has a fixed structure and is not easy to disassemble, carbon deposits can only be cleaned manually with a hand-held brush. This cleaning method is very inconvenient, and the carbon deposits that have been attached for a long time are not easy to clean.

For example, Chinese patent CN201921132051.4 discloses a car exhaust pipe that is easy to clean carbon deposits. It includes an outer exhaust pipe and an inner exhaust pipe. The inner exhaust pipe is sleeved in the outer exhaust pipe. The inner exhaust pipe An annular connection seat is fixedly connected to one end of the annular connection seat, and the end of the annular connection seat away from the inner exhaust pipe is sleeved on the outside of the outer exhaust pipe. The annular connection seat and the outer exhaust pipe are fixedly connected through a plurality of fastening bolts. There are two U-shaped parts fixedly connected to the inner wall of the inner exhaust pipe, and the same horizontal rotation shaft is rotatably connected between the two U-shaped parts. The outside of the rotation shaft in the notch of the U-shaped part is fixedly connected. There is a wind wheel, and a plurality of support rods are fixedly connected to the outside of the rotation axis between the two U-shaped parts. A cleaning mechanism is provided at one end of the support rod away from the rotation axis, and a buffer connected to the cleaning mechanism is provided in the support rod. mechanism.

Although the above-mentioned patent uses a wind-driven cleaning mechanism for cleaning, the cleaning position is fixed and there are cleaning dead spots. If more cleaning mechanisms are installed to cover the inner wall of the exhaust pipe, it will also occupy too much space in the exhaust pipe, making the exhaust The trachea is not vented smoothly.

Contents of the invention

The object of the present invention is to provide a carbon-deposited self-cleaning exhaust pipe to solve the problems mentioned in the above background art.

A carbon-deposited self-cleaning exhaust pipe includes an exhaust pipe, a fixed frame, a cleaning device, an inner magnetic component, a driving device and an external magnetic component. The fixed frame is fixedly connected to the exhaust pipe, and the center of the fixed frame at Fixed connection with sliding shaft;

The right end of the sliding shaft is fixedly connected with an inner support frame, and the inner support frame is fixed on the inner wall of the exhaust pipe using air pressure inner support.

The cleaning device is slidably connected to the sliding shaft and can be rotated by wind power to clean the inner wall of the exhaust pipe;

The driving device is located outside the fixed frame and the exhaust pipe. The driving device is used to drive the outer magnetic assembly to reciprocate along the axial direction of the sliding shaft, thereby attracting the inner magnetic assembly to drive the cleaning device to move on the sliding shaft.

Preferably, the inner support frame includes a connecting block, the cross-section of the connecting block is a cube, the connecting block is provided with an air channel connecting the surrounding side walls and the left wall, and the connecting block has air channels on the surrounding side walls. A piston cylinder is fixedly connected, a piston rod is slidingly connected in the piston cylinder, and an inner support block is fixedly connected to the top of the piston rod.

Preferably, the sliding shaft is hollow inside, the left end of the sliding shaft is provided with a valve, the right end of the sliding shaft is connected to the air passage of the connecting block, the fixing frame includes a left end cover and a right sleeve cover, The left end cover and the right sleeve cover are fixedly connected together through two support columns.

Preferably, the cleaning device includes an inner impeller. The inner impeller is slidingly connected to the sliding shaft and can be rotated by wind power. A ring is fixedly connected to the outside of the inner impeller, and a ring is provided on the circumference of the ring. Several brush strips, the brush strips are evenly provided with bristles.

Preferably, the inner magnetic component includes an inner annular frame and an annular magnet. The inner annular frame is rotationally connected to the inner impeller through a bearing. The annular magnet is fixedly connected to the outside of the inner annular frame.

Preferably, the outer magnetic component includes an outer ring frame and two ring magnets. The outer ring frame is slidingly connected to the support column. The inner side of the outer ring frame is fixedly connected with a ring magnet two that attracts the ring magnet one, so Rotatable rollers are installed in the mounting groove of the outer annular frame.

Preferably, the driving device includes a rotating drum and an outer impeller. The rotating drum is rotatably connected to the outside of the left end cover and the right sleeve cover through two bearings. The inner wall of the rotating drum is provided with an inclined annular groove, so The roller is slidingly connected in the annular groove, and the outer impeller is fixedly connected to the outside of the rotating drum.

Preferably, the first and second ring magnets are radially magnetized, and the outer magnetic poles of the outer ring magnet and the inner magnetic poles of the second ring magnet are opposite.

The advantages of the present invention are:

A brush bar is provided on the inner impeller. The airflow of the exhaust gas can be used to drive the inner impeller to drive the brush bar to rotate and clean the inner wall of the exhaust pipe. Because it will automatically clean as long as the vehicle is in use, it can greatly reduce the buildup. Carbon adhesion amount;

A rotatable drum is provided, and an annular groove is provided on the inner wall of the drum. When the drum rotates, the force of the groove on the roller can be used to make the external magnetic component realize reciprocating motion outside the exhaust pipe, thereby utilizing the magnetic force. The adsorption force drives the inner magnetic component to reciprocate, driving the inner impeller to move on the sliding shaft, which solves the problem of cleaning dead corners caused by the fixed position of the inner impeller. It also avoids the exhaust pipe space caused by setting up multiple cleaning devices. Smaller size and poor exhaust problems;

The outer impeller is fixed on the outside of the drum, so that the rotation of the brush bar and the rotation of the drum use airflow as the driving force. The devices are all composed of mechanical structures, without the need for additional actuators and sensors, making it possible to clean the carbon deposits in the exhaust pipe. More stable and reliable, with low failure rate.

The fixed frame is fixed with the left end cover and the right sleeve cover in conjunction with the support frame. The support frame can be inflated and deflated through the valve to achieve auxiliary fixation of the fixed frame, which facilitates disassembly and maintenance.

Description of the drawings

Figure 1 is a schematic structural diagram of the exhaust pipe, fixed frame, rotating drum and other parts after being cut away;

Figure 2 is a schematic diagram of the external structure of the present invention;

Figure 3 is a cross-sectional view of the support frame and sliding shaft;

Figure 4 is a schematic structural diagram of the internal magnetic assembly and cleaning device;

Figure 5 is a cross-sectional view of the external magnetic assembly;

Figure 6 is a schematic structural diagram of the rotating drum.

In the picture: 1-exhaust pipe, 2-fixing bracket, 21-left end cover, 22-right cover, 23-support column;

3-Cleaning device, 31-Inner impeller, 32-Ring, 33-Brush bar;

4-inner magnetic component, 41-inner ring frame, 42-ring magnet one, 43-bearing one;

5-driving device, 51-drum, 511-annular groove, 52-outer impeller, 53-bearing two;

6-External magnetic component, 61-Outer ring frame, 62-Ring magnet two, 63-Roller, 631-Rotating part, 632-Fixed part;

7-sliding shaft, 71-valve, 8-inner support bracket, 81-connecting block, 82-piston cylinder, 83-piston rod, 84-inner support block.

Detailed ways

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below in conjunction with specific implementation modes.

As shown in Figures 1 to 6, a carbon-deposited self-cleaning exhaust pipe includes an exhaust pipe 1, a fixed frame 2, a cleaning device 3, an inner magnetic assembly 4, a driving device 5 and an outer magnetic assembly 6. The fixed frame 2 is fixedly connected to the exhaust pipe 1, and a sliding shaft 7 is fixedly connected to the center of the fixed frame 2;

The right end of the sliding shaft 7 is fixedly connected with an inner support frame 8. The inner support frame 8 is fixed on the inner wall of the exhaust pipe 1 using air pressure inner support.

The cleaning device 3 is slidingly connected to the sliding shaft 7 and can be rotated by wind power to clean the inner wall of the exhaust pipe 1;

The driving device 5 is provided on the outside of the fixed frame 2 and the exhaust pipe 1. The driving device 5 is used to drive the outer magnetic assembly 6 to reciprocate along the axial direction of the sliding shaft 7, thereby attracting the inner magnetic assembly 4 to drive the cleaning device 3 on the sliding shaft. 7 on mobile.

In this embodiment, the inner support frame 8 includes a connecting block 81. The cross-section of the connecting block 81 is a cube. The connecting block 81 is provided with air channels that connect the surrounding side walls and the left wall. There are air channels on the surrounding side walls of the connecting block 81. A piston cylinder 82 is fixedly connected, a piston rod 83 is slidingly connected inside the piston cylinder 82, and an inner support block 84 is fixedly connected to the top of the piston rod 83.

In this embodiment, the interior of the sliding shaft 7 is hollow. The left end of the sliding shaft 7 is provided with a valve 71. The valve 71 is the same as the valve 71 used in tires and has the function of inflating and deflating. The right end of the sliding shaft 7 is connected to the valve 71. The air passages of the connecting block 81 are connected. The fixed frame 2 includes a left end cover 21 and a right cover 22. The left end cover 21 and the right cover 22 are fixedly connected together through two support columns 23. The left end cover 21 is provided with the exhaust pipe 1. At the rear end, the right cover 22 is fixed on the outside of the exhaust pipe 1.

In this embodiment, the cleaning device 3 includes an inner impeller 31 , which is slidingly connected to the sliding shaft 7 and can rotate driven by wind. A ring 32 is fixedly connected to the outside of the inner impeller 31 , and a ring 32 is fixedly connected to the circumference of the ring 32 . A number of brush bars 33 are provided, and the brush bars 33 are evenly provided with bristles. The bristles are made of steel wire to avoid the influence of high temperature on ordinary bristles. Multiple brush bars 33 are used instead of arranging the entire annular brush bar 33 around the ring 32 , reducing the space occupied by the brush bar 33 itself in the exhaust pipe 1 .

In this embodiment, the outer magnetic assembly 6 includes an outer annular frame 61 and an annular magnet 62 . The outer annular frame 61 is slidingly connected to the support column 23 . The inner side of the outer annular frame 61 is fixedly connected with an annular magnet 42 that attracts each other. Magnet 2 62 has a rotatable roller 63 installed in the mounting groove 611 of the outer annular frame 61. The roller 63 is composed of two parts. The left end is a rotating part 631 and the right end is a fixed part 632. The rotating part 631 is rotationally connected with the fixed part 632. The rotating part 631 extends out through the installation groove 611, and the fixed part 632 remains in the installation groove 611. to the limiting effect.

In this embodiment, the inner magnetic assembly 4 includes an inner annular frame 41 and an annular magnet 42. The inner annular frame 41 and the inner impeller 31 are rotationally connected through a bearing 43. In order to avoid the magnetic adsorption force from affecting the rotation of the inner impeller 31, the The inner annular frame 41 is rotatably connected to the inner impeller 31, and an annular magnet 42 is fixedly connected to the outside of the inner annular frame 41.

In this embodiment, the first ring magnet 42 and the second ring magnet 62 are both radially magnetized, and the outside of the ring magnet 42 and the inside of the ring magnet 62 have opposite magnetic poles, ensuring that the inside of the ring magnet 2 62 is opposite to the inside of the ring magnet one. The outside of 42 has a good magnetic adsorption force.

In this embodiment, the driving device 5 includes a rotating drum 51 and an outer impeller 52. The rotating drum 51 is rotatably connected to the outside of the left end cover 21 and the right sleeve cover 22 through two bearings 53. The inner wall of the rotating drum 51 is provided with an inclined The roller 63 is slidingly connected in the annular groove 511. The roller 63 will make linear reciprocating motion along the annular groove 511. The working principle is the same as that of the cam groove. The annular groove 511 is a complete circle of inclined grooves. When the outer cylinder rotates once, it will drive the roller 63 to make a reciprocating motion, thereby causing the outer magnetic assembly 6 as a whole to make a reciprocating linear motion. The outer impeller 52 is fixedly connected to the outside of the rotating drum 51 .

Working process and principle:

During installation, the fixing bracket 2 is placed on the exhaust pipe 1, and the inner support bracket 8 is extended into the intake and exhaust pipe 1, and then the sliding shaft 7 is inflated through the valve 71, which is similar to the valve commonly used in tires. 71, with the function of inflating and deflating. The gas enters the connecting block 81 through the sliding shaft 7, and then fills the piston barrel 82 through the air channel of the connecting block 81. The gas pushes the piston rod 83 outward, and finally the inner support block 84 supports the exhaust gas. The inner wall of the pipe 1, thereby fixing both ends of the sliding shaft 7, preventing one end of the sliding shaft 7 that extends into the intake and exhaust pipe 1 from shaking when the car is driving, improving the stability of the cleaning device, and at the same time giving The fixing bracket 2 and the exhaust pipe 1 provide a certain fixing force. After that, the right sleeve cover 22 and the exhaust pipe 1 are fixedly connected together with a single screw 9 .

When the vehicle is started, the exhaust airflow in the exhaust pipe 1 will drive the inner impeller 31 to rotate. The rotation of the inner impeller 31 drives the brush bar 33 on its outer ring 32 to rotate and clean the inner wall of the exhaust pipe 1. The brush bar 33 is The bristles are made of steel wire to avoid the impact of high temperature on ordinary bristles. Multiple brush bars 33 are used instead of arranging the entire annular brush bar 33 around the ring 32, thereby reducing the space occupied by the brush bar 33 itself in the exhaust pipe 1 use.

In the same way, the outer impeller 52 on the outside will also rotate when it is impacted by the airflow during the driving of the car, driving the outer cylinder to rotate on the outside of the fixed frame 2, and the rotation of the outer cylinder acts on the roller 63. Since the outer annular frame 61 is slidably limited by the support column 23, the roller 63 will move linearly along the annular groove 511, and the working principle is the same as that of the cam groove. The annular groove 511 is a complete circle of inclined grooves. When the outer cylinder rotates once, it will drive the roller 63 to make a reciprocating motion, thereby causing the outer magnetic assembly 6 as a whole to make a reciprocating linear motion. Ring magnet two 62 has a magnetic adsorption force on ring magnet one 42. Ring magnet one 42 also achieves reciprocating linear motion with the help of this magnetic adsorption force. If the inner ring frame 41 is directly fixedly connected to the inner impeller 31, the magnetic adsorption force will It affects the rotation of the inner impeller 31, so the inner annular frame 41 and the inner impeller 31 are designed to be rotationally connected. At this point, the inner impeller 31 can rotate and reciprocate under the adsorption effect of the outer magnetic assembly 6 to clean the inner wall of the exhaust pipe 1 .

When producing and assembling the inner magnetic assembly 4, first pass the outer annular frame 61 through the support column 23, and then align the mounting groove 611 with the annular groove 511 and install the roller 63 into the mounting groove 611 from the inside to the outside. It consists of two parts. The left end is a rotating part 631 and the right end is a fixing part 632. The rotating part 631 extends through the mounting groove 611. The fixing part 632 stays in the mounting groove 611 to play a limiting role and allows the roller 63 to slide in the ring. In the groove 511, that is, the rotating member 631 slides in the annular groove 511. Finally, the second annular magnet 62 is fixed in the outer annular frame 61, and the roller 63 can be installed in the outer annular frame 61.

During disassembly and maintenance, remove a screw 9 between the right cover 22 and the exhaust pipe 1, and then deflate through the valve 71 so that the piston rod 83 is retracted, and the entire device can be easily removed from the exhaust pipe 1. Next, perform maintenance.

It is known from common technical knowledge that the present invention can be implemented by other embodiments without departing from its spirit or essential characteristics. Therefore, the above-disclosed embodiments are in all respects illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

A carbon-deposited self-cleaning exhaust pipe, characterized by including an exhaust pipe (1), a fixed frame (2), a cleaning device (3), an internal magnetic component (4), a driving device (5) and an external magnetic force Assembly (6), the fixed frame (2) is fixedly connected to the exhaust pipe (1), and the sliding shaft (7) is fixedly connected to the center of the fixed frame (2);

The right end of the sliding shaft (7) is fixedly connected with an inner support frame (8), and the inner support frame (8) is fixed on the inner wall of the exhaust pipe (1) using air pressure internal support.

The cleaning device (3) is slidingly connected to the sliding shaft (7), and can be rotated by wind power to clean the inner wall of the exhaust pipe (1);

The driving device (5) is located outside the fixed frame (2) and the exhaust pipe (1). The driving device (5) is used to drive the external magnetic component (6) along the axial direction of the sliding shaft (7). It moves back and forth, thereby attracting the inner magnetic assembly (4) to drive the cleaning device (3) to move on the sliding shaft (7).
A carbon-deposited self-cleaning exhaust pipe according to claim 1, characterized in that the inner support frame (8) includes a connecting block (81), and the cross-section of the connecting block (81) is a cube. The connecting block (81) is provided with an air passage connecting the surrounding side walls and the left wall. Piston cylinders (82) are fixedly connected to the surrounding side walls of the connecting block (81). The piston cylinder (82) A piston rod (83) is slidably connected inside, and an inner support block (84) is fixedly connected to the top of the piston rod (83).
A carbon-deposited self-cleaning exhaust pipe according to claim 1, characterized in that the sliding shaft (7) is hollow inside, and a valve (71) is provided at the left end of the sliding shaft (7). The right end of the sliding shaft (7) is connected with the air passage of the connecting block (81). The fixed frame (2) includes a left end cover (21) and a right sleeve cover (22). The left end cover (21) is connected to the right cover (22). The cover (22) is fixedly connected together through two supporting columns (23).
A carbon-deposited self-cleaning exhaust pipe according to claim 1, characterized in that the cleaning device (3) includes an inner impeller (31), and the inner impeller (31) slides with the sliding shaft (7) The inner impeller (31) is connected with a ring (32) and can be rotated by wind power. A ring (32) is fixedly connected to the outside of the inner impeller (31). A number of brush strips (33) are provided on the circumference of the ring (32). The brushes The strips (33) are evenly provided with bristles.
A carbon-deposited self-cleaning exhaust pipe according to claim 1, characterized in that the inner magnetic assembly (4) includes an inner annular frame (41) and an annular magnet (42), and the inner annular frame (41) is rotationally connected to the inner impeller (31) through bearing one (43), and the annular magnet one (42) is fixedly connected to the outside of the inner annular frame (41).
A carbon-deposited self-cleaning exhaust pipe according to claim 1, characterized in that the outer magnetic assembly (6) includes an outer annular frame (61) and two annular magnets (62), and the outer annular frame (61) is slidingly connected to the support column (23). The inner side of the outer annular frame (61) is fixedly connected with two annular magnets (62) that attract each other to the annular magnet one (42). The outer annular frame (61) A rotatable roller (63) is installed in the mounting groove (611).
A carbon-deposited self-cleaning exhaust pipe according to claim 6, characterized in that the driving device (5) includes a rotating drum (51) and an outer impeller (52), and the rotating drum (51) passes through Two bearings (53) are rotatably connected to the outside of the left end cover (21) and the right sleeve cover (22). The inner wall of the rotating drum (51) is provided with an inclined annular groove (511), and the roller ( 63) is slidingly connected in the annular groove (511), and the outer impeller (52) is fixedly connected to the outside of the rotating drum (51).
A carbon-deposited self-cleaning exhaust pipe according to claim 5, characterized in that the first annular magnet (42) and the second annular magnet (62) are both radially magnetized, and the first annular magnet (42) ) is opposite to the inner magnetic pole of the ring magnet two (62).