CN114837773B

CN114837773B - Particle trapping device and vehicle

Info

Publication number: CN114837773B
Application number: CN202210592632.6A
Authority: CN
Inventors: 李艳光; 何平; 黄波
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-07-28
Anticipated expiration: 2042-05-27
Also published as: CN114837773A

Abstract

The application discloses a particle trap device, which comprises a first shell, a second shell, a first particle trap and a second particle trap; the first particle catcher is positioned in the first shell, the air inlet end of the first shell is connected with the exhaust pipe, and the air outlet end of the first shell is detachably connected with the air inlet end of the second shell; the second particle catcher is positioned in the second shell, and the air outlet end of the first particle catcher is detachably connected with the air inlet end of the second particle catcher; the gas exhausted from the exhaust pipe sequentially passes through the first particle catcher and the second particle catcher and is exhausted to the atmosphere. By adopting the technical scheme, the replacement process of the particle trapping device can be more convenient, and the required cost is lower.

Description

Particle trapping device and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a particle trapping device and a vehicle.

Background

Fuel such as gasoline, diesel oil and the like extracted from fossil energy is the main energy source of the current vehicles. During operation of a vehicle, fuel is often not fully combusted and particulate matter formed from the incompletely combusted fuel is discharged to the atmosphere along with the vehicle exhaust. Because these particulates contain a large amount of harmful substances, once discharged into the atmosphere, they can cause serious pollution to the environment and serious damage to the health of the human body. As people have become more and more conscious of environmental protection and the national emission standards for vehicle exhaust gas have become more and more stringent, more and more vehicles are provided with different devices for reducing harmful particles in the exhaust gas.

In the related art, an integrated particulate trap device is provided in a vehicle to adsorb particulate matter contained in a gas discharged from an exhaust pipe. When the content of the accumulated particulate matters in the particulate trapping device is high, the particulate trapping device needs to be replaced as a whole. Because when changing the particle trap, need carry out the split one by one with particle trap device and all spare parts around, lead to this change process very loaded down with trivial details and easily cause the damage to spare part around, therefore not only new particle trap device itself cost is higher, because of the cost of maintenance that changes and lead to also higher.

Disclosure of Invention

In view of this, this application provides a particle trap device and vehicle, and this particle trap device's change process is more convenient, and required cost is lower simultaneously.

In one aspect, embodiments herein provide a particle trap apparatus comprising a first housing, a second housing, a first particle trap, and a second particle trap;

the first particle catcher is positioned in the first shell, the air inlet end of the first shell is connected with the exhaust pipe, and the air outlet end of the first shell is detachably connected with the air inlet end of the second shell;

the second particle catcher is positioned in the second shell, and the air outlet end of the first particle catcher is detachably connected with the air inlet end of the second particle catcher;

and the gas exhausted from the exhaust pipe sequentially passes through the first particle catcher and the second particle catcher and is exhausted to the atmosphere.

Optionally, the first particle catcher is provided with a plurality of first air flow channels which are parallel to each other, and the first air flow channels are arranged along the air flow direction;

the second particle catcher is internally provided with a plurality of second airflow channels which are parallel to each other, the second airflow channels are arranged along the airflow direction, and the first airflow channels are in one-to-one correspondence with the second airflow channels;

and the gas exhausted from the exhaust pipe sequentially passes through the first airflow channel and the second airflow channel and is exhausted to the atmosphere.

Optionally, the first air flow channel comprises a first sub-air flow channel and a second sub-air flow channel, the first sub-air flow channel and the second sub-air flow channel are adjacent, and the wall surface of the first sub-air flow channel is communicated with the wall surface of the second sub-air flow channel;

the air inlet end of the first sub-air flow channel is closed, and the air outlet end of the first sub-air flow channel is open;

the air inlet end of the second sub-air flow channel and the air outlet end of the second sub-air flow channel are both open;

the gas exhausted from the exhaust pipe enters the second sub-gas flow channel through the gas inlet end of the second sub-gas flow channel, and then is exhausted into the second gas flow channel through the gas outlet end of the first sub-gas flow channel or the gas outlet end of the second sub-gas flow channel.

Optionally, the second airflow channel comprises a third sub airflow channel and a fourth sub airflow channel, the third sub airflow channel is adjacent to the fourth sub airflow channel, and the wall surface of the third sub airflow channel is communicated with the wall surface of the fourth sub airflow channel;

the third sub-airflow channel corresponds to the first sub-airflow channel, and the fourth sub-airflow channel corresponds to the second sub-airflow channel;

the air inlet end of the third sub-air flow channel and the air outlet end of the third sub-air flow channel are both open;

the air inlet end of the fourth sub-air flow channel is open, and the air outlet end of the fourth sub-air flow channel is closed;

the gas discharged from the first gas flow channel enters the third sub-gas flow channel or the fourth sub-gas flow channel, and then is discharged to the atmosphere through the gas outlet end of the third sub-gas flow channel.

Optionally, the apparatus further comprises a first gasket located between the first housing and the first particle trap, and the first gasket wraps around an outer surface of the first particle trap.

Optionally, the apparatus further comprises a second gasket located between the second housing and the second particle trap, and the second gasket wraps around an outer surface of the second particle trap.

Optionally, the apparatus further comprises a differential pressure sensor for measuring a difference between the pressure in the first particle trap and the pressure in the second particle trap.

Optionally, the device further comprises a controller for receiving the pressure difference sent by the differential pressure sensor;

when the pressure difference reaches a first target value, the controller generates a regeneration instruction for instructing regeneration of particulate matter in the first particulate trap and/or the second particulate trap.

Optionally, when the pressure difference reaches a second target value, the controller generates a replacement instruction for instructing replacement of the second particle trap.

In another aspect, embodiments of the present application provide a vehicle including a particulate trap device as described in any one of the above.

According to the technical scheme, the particle trapping device comprises a first particle trap and a second particle trap. When the amount of the particles trapped in the particle trapping device is large, the risk of blocking the particle trapping device is caused, and only the second particle trap needs to be removed and replaced. Because only a part of the structure of the particle trapping device needs to be replaced, the replacement process is more convenient and lower in cost, and meanwhile, the damage to parts around the particle trapping device can be reduced, and the maintenance risk and the maintenance cost are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a particle trap apparatus provided in an embodiment of the present application;

fig. 2 is a schematic diagram of an airflow channel in a particle capturing device according to an embodiment of the present application.

The figures are respectively:

100. a first housing;

200. a second housing;

300. a first particle trap; 310. a first airflow passage; 320. a second airflow passage; 311. a first sub-airflow passage; 312. a second sub-airflow path; 321. a third sub-airflow path; 322. a fourth sub-airflow passage;

400. a second particle catcher;

500. a first gasket;

600. a second gasket;

700. a differential pressure sensor;

800. a controller;

900. a clamp;

1000. an air inlet end flange;

1100. and an air outlet end flange.

Detailed Description

As shown in fig. 1, the present embodiment provides a particle trap apparatus including a first housing 100, a second housing 200, a first particle trap 300, and a second particle trap 400. The first particle trap 300 is disposed in the first housing 100, the air inlet end of the first housing 100 is connected to the exhaust pipe, and the air outlet end of the first housing 100 is detachably connected to the air inlet end of the second housing 200. The second particle trap 400 is located in the second housing 200, and the air outlet end of the first particle trap 300 is detachably connected to the air inlet end of the second particle trap 400. The gas discharged from the exhaust pipe passes through the first particle trap 300 and the second particle trap 400 in this order, and is discharged to the atmosphere.

In general, there are three sources of particulate matter contained in a gas discharged from an exhaust pipe of a vehicle, the first source being a non-combustible substance, the second source being a combustible substance but not combusted substance, and the third source being a combustion product. Particulate matter is composed primarily of carbonaceous particles and ash particles, where ash particles are produced primarily from additives in engine oils. When the gas exhausted from the exhaust pipe flows through the particle catcher device, the carbonaceous particles in the gas are generally concentrated at the front end of the particle catcher device, and the ash particles are generally concentrated at the rear end of the particle catcher device, that is, the first particle catcher 300 is mainly used for catching the carbonaceous particles, and the second particle catcher 400 is mainly used for catching the ash particles. As particulate matter continues to be trapped, the particulate matter content in both particulate traps becomes higher and higher, wherein carbonaceous particulates can be exhausted to the atmosphere by way of regeneration, while ash particulates cannot be regenerated. When ash particles accumulate to a certain level, the second particle catcher 400 is blocked, so that the air flow in the exhaust system of the vehicle is not smooth, and the exhaust back pressure is too high, so that the working condition of the engine is extremely poor. It will be appreciated that although very few ash particles may be trapped in first particulate trap 300, the amount of ash particles trapped in first particulate trap 300 is very small and therefore generally does not pose a risk of plugging. The above-described risk of plugging is mainly caused by the large number of ash particles trapped in the second particle trap 400. When it is determined that there is a risk of clogging the particle catch arrangement, the particle catch arrangement needs to be replaced.

According to the technical scheme provided by the embodiment of the application, the particle trapping device comprises a first particle trap 300 and a second particle trap 400. When the amount of particulate matter trapped in the particulate trapping device is large, which may cause a risk of clogging the particulate trapping device, the second particulate trap 400 may be removed and replaced. Because only a part of the structure of the particle trapping device needs to be replaced, the replacement process is more convenient and lower in cost, and meanwhile, the damage to parts around the particle trapping device can be reduced, and the maintenance risk and the maintenance cost are reduced.

The details and functions of the particle capturing device according to the embodiments of the present application will be described in more detail below with reference to fig. 1 to 2.

In some embodiments, the first housing 100 is the same shape as the second housing 200, thereby facilitating the detachable connection of the first housing 100 and the second housing 200 together. In some embodiments, the first housing 100 matches the shape of the first particle trap 300 and the second housing 200 matches the shape of the second particle trap 400. For example, when the first particle trap 300 is a cylinder, then the first housing 100 is a cylinder, and when the second particle trap 400 is a cylinder, then the second housing 200 is a cylinder; alternatively, when the first particle trap 300 is a rectangular parallelepiped, then the first housing 100 is a rectangular tube, when the second particle trap 400 is a rectangular parallelepiped, then the second housing 200 is a rectangular tube, and so on. It will be appreciated that the first housing 100 matches the shape of the first particle trap 300 and the second housing 200 matches the shape of the second particle trap 400. During operation of the exhaust system or during running of the vehicle, the vehicle may vibrate, and through such a shape fit, the positions of the first particle trap 300 and the second particle trap 400 may be better fixed, preventing movement in the first case 100 or the second case 200 in the first particle trap 300 or the second particle trap 400, respectively.

In some embodiments, the air intake end of the first housing 100 is connected to other structures via an air intake end flange 1000, such as a conduit of an exhaust pipe via the air intake end flange 1000. The outlet end of the second housing 200 is connected to other structures through an outlet end flange 1100, for example, to a muffler through the outlet end flange 1100.

As shown in fig. 1, in some embodiments, the air outlet end of the first housing 100 is detachably connected to the air inlet end of the second housing 200 by a clip 900. It will be appreciated that the clip 900 is located at the junction between the first housing 100 and the second housing 200, with a portion of the inner surface of the clip 900 being in close proximity to the outer surface of the first housing 100 and another portion of the inner surface of the clip 900 being in close proximity to the outer surface of the second housing 200. The clip 900 is ring-shaped, and the clip 900 is fastened to the outer surface of the first housing 100 and the outer surface of the second housing 200 by bolts, and the first housing 100 and the second housing 200 can be separated by removing the bolts.

In some embodiments, the air outlet end of the first housing 100 is fixed with a first flange (not shown), the air inlet end of the second housing 200 is fixed with a second flange (not shown), and the first flange and the second flange are fixed together by bolts, so that the air outlet end of the first housing 100 and the air inlet end of the second housing 200 are detachably connected together, that is, only the bolts need to be removed to separate the first housing 100 and the second housing 200. In some embodiments, a flange pad is disposed between the first flange and the second flange, and the flange pad is annular. The flange pad can be made of rubber, graphite or asbestos. By arranging the flange gasket, the tightness between the first flange plate and the second flange plate can be improved. It will be appreciated that the flange pad is provided with a through hole through which a bolt connecting the first flange plate and the second flange plate passes.

As shown in fig. 1, the first particle trap 300 has a plurality of first air flow passages 310 therein, which are parallel to each other, and the first air flow passages 310 are arranged in the air flow direction. The second particle trap 400 has a plurality of second airflow channels 320 parallel to each other, the second airflow channels 320 are arranged along the airflow direction, and the first airflow channels 310 are in one-to-one correspondence with the second airflow channels 320. The gas discharged from the exhaust pipe is discharged to the atmosphere after passing through the first gas flow channel 310 and the second gas flow channel 320 in order. It should be noted that, when the first particle trap 300 and the second particle trap 400 are cylindrical, the axial direction of the cylinder is the airflow direction. The first particle trap 300 and the second particle trap 400 trap particles in the airflow, and trapping refers to a process of adsorbing the particles. It can be appreciated that the gas flow of the gas exhausted from the exhaust pipe flows through the first gas flow channel 310 of the first particle catcher 300 and then flows through the second particle catcher 400, so that the two trapping processes can be realized, the adsorption effect on the particles in the gas flow is improved, the harmful substances are better prevented from being directly exhausted into the atmosphere, the pollution of the harmful gas to the environment is reduced, and the damage of the harmful gas to the health of people is also reduced.

FIG. 2 is a schematic diagram of an airflow channel in an embodiment of the present application. As shown in connection with fig. 2, in some embodiments, the first airflow channel 310 includes a first sub-airflow channel 311 and a second sub-airflow channel 312, the first sub-airflow channel 311 and the second sub-airflow channel 312 being adjacent, a wall of the first sub-airflow channel 311 communicating with a wall of the second sub-airflow channel 312. The air inlet end of the first sub-air flow path 311 is closed, and the air outlet end of the first sub-air flow path 311 is open. The inlet end of the second sub-flow path 312 and the outlet end of the second sub-flow path 312 are both open. The gas exhausted from the exhaust pipe enters the second sub-gas flow path 312 through the gas inlet end of the second sub-gas flow path 312 and then is exhausted into the second gas flow path 320 through the gas outlet end of the first sub-gas flow path 311 or the gas outlet end of the second sub-gas flow path 312. It should be noted that the first airflow channel 310 includes a plurality of first sub-airflow channels 311 and a plurality of second sub-airflow channels 312, and each of the first sub-airflow channels 311 and each of the second sub-airflow channels 312 are adjacent. By closing the air inlet end of the first sub-airflow channel 311, the air can be forced to flow out from the air outlet end of the first sub-airflow channel 311 or the air outlet end of the second sub-airflow channel 312 to the second airflow channel 320, so that the residence time of the air in the first trap is increased, the collision frequency of the air and the inner wall of each airflow channel is increased, and the trapping effect of the first particle trap 300 on the particles in the air is further improved.

In some embodiments, the first trap is a ceramic material. The wall surfaces of the first sub-gas flow channel 311 and the wall surfaces of the second sub-gas flow channel 312 are in an open microporous structure, and the gas in the first sub-gas flow channel 311 can flow into the second sub-gas flow channel 312, and the gas in the second sub-gas flow channel 312 can also flow into the first sub-gas flow channel 311. Referring to fig. 2, after the gas enters from the inlet end of the second sub-gas flow path 312, there may be several flow ways:

first, the gas flows directly from the outlet end of the second sub-gas flow path 312 into the second gas flow path 320. It will be appreciated that the particulate matter in the gas is now adsorbed by the walls of the second sub-gas flow path 312.

Second, the gas flows from the wall surface of the second sub-gas flow path 312 to the adjacent first sub-gas flow path 311, and then flows out into the second gas flow path 320. It can be understood that the particulate matters in the gas are adsorbed by the wall surface of the second sub-gas flow channel 312 and the wall surface of the first sub-gas flow channel 311, so as to improve the adsorption effect on the particulate matters.

Third, the gas flows from the wall surface of the second sub-gas flow channel 312 to the adjacent first sub-gas flow channel 311, then flows to the other second sub-gas flow channels 312 through the wall surface of the first sub-gas flow channel 311, and finally flows out from the gas outlet ends of the other second sub-gas flow channels 312 into the second gas flow channel 320. It can be understood that the particulate matters in the gas are adsorbed by the plurality of second sub-gas flow channels 312 and the plurality of first sub-gas flow channels 311, so as to improve the adsorption effect on the particulate matters.

That is, by arranging the airflow channels, the collision frequency of the particulate matters in the gas and the inner walls of the airflow channels is increased, and the adsorption effect on the particulate matters is improved.

In some embodiments, the air outlet end of the first particle trap 300 is flush with the air inlet end of the second particle trap 400. Therefore, the gas can flow from the first gas flow channel 310 to the second gas flow channel 320 more and collide with the inner wall of each gas flow channel, so that the particles in the gas are better adsorbed, and the adsorption effect of the particle trapping device on the particles in the gas discharged by the exhaust pipe is improved.

As shown in fig. 2, in some embodiments, the second airflow channel 320 includes a third sub-airflow channel 321 and a fourth sub-airflow channel 322, the third sub-airflow channel 321 and the fourth sub-airflow channel 322 are adjacent, and a wall surface of the third sub-airflow channel 321 communicates with a wall surface of the fourth sub-airflow channel 322. The third sub-air flow path 321 corresponds to the first sub-air flow path 311, and the fourth sub-air flow path 322 corresponds to the second sub-air flow path 312. The air inlet end of the third sub-air flow path 321 and the air outlet end of the third sub-air flow path 321 are both open. The air inlet end of the fourth sub-air flow path 322 is open, and the air outlet end of the fourth sub-air flow path 322 is closed. The gas discharged from the first gas flow channel 310 enters the third sub-gas flow channel 321 or the fourth sub-gas flow channel 322, and then is discharged to the atmosphere through the gas outlet end of the third sub-gas flow channel 321. In some embodiments, the second trap is a ceramic material. The wall of the third sub-air flow path 321 and the wall of the fourth sub-air flow path 322 have an open microporous structure. It should be understood that, by closing the air outlet end of the fourth sub-air flow channel 322, the air flowing into the fourth sub-air flow channel 322 can be forced to flow to the third sub-air flow channel 321 only through the wall surface of the fourth sub-air flow channel, and finally discharged to the atmosphere from the air outlet of the third sub-air flow channel 321. Through the arrangement, the collision frequency of the particulate matters in the gas and the inner wall of each airflow channel is increased, and the adsorption effect on the particulate matters is improved.

As shown in fig. 2, in some embodiments, the apparatus further comprises a first gasket 500, the first gasket 500 being located between the first housing 100 and the first particle trap 300, and the first gasket 500 wrapping around an outer surface of the first particle trap 300. It should be noted that, during the operation of the exhaust system or during the running of the vehicle, the particle catch device may generate vibration, and by providing the first gasket 500 between the first particle catch 300 and the first housing 100, the particle catch device may play a role in buffering and protecting the particle catch, and may also prevent the first particle catch 300 from moving in the first housing 100, so as to avoid affecting the catching effect of the first particle catch 300.

In some embodiments, the material of the first gasket 500 is vermiculite. Because the first particle catcher 300 is made of ceramic material, when the particle catcher is in a working state, the temperature inside the device gradually rises, and the first particle catcher 300 may be deformed due to thermal expansion, and by arranging the first gasket 500 to block the first particle catcher 300 from the first shell 100, the deformation of the first shell 100 caused by the deformation of the first particle catcher 300 can be avoided, that is, the first gasket 500 plays a role in buffering and protecting.

The first gasket 500 is matched with the shape of the first particle trap 300, for example, when the first particle trap 300 is a cylinder, the first gasket 500 is a cylinder, and at this time, the inner wall of the first gasket 500 is tightly attached to the outer wall of the first particle trap 300, the outer wall of the first particle trap 300 refers to the cylindrical surface of the cylinder, and the outer wall of the first gasket 500 is tightly attached to the inner wall of the first housing 100.

As shown in fig. 2, in some embodiments, the apparatus further comprises a second gasket 600, the second gasket 600 being located between the second housing 200 and the second particle trap 400, and the second gasket 600 wrapping around an outer surface of the second particle trap 400. In some embodiments, the material of the second gasket 600 is vermiculite. The second gasket 600 is matched to the shape of the second particle trap 400, wherein the inner wall of the second gasket 600 is in close contact with the outer wall of the second particle trap 400, and the outer wall of the second gasket 600 is in close contact with the inner wall of the second housing 200. It will be appreciated that the second gasket 600 is similar in structure and function to the first gasket 500, i.e., the second gasket 600 may provide cushioning and protection to the second particle trap 400.

As shown in fig. 2, in some embodiments, the apparatus further includes a differential pressure sensor 700, the differential pressure sensor 700 being configured to measure a difference between the pressure within the first particle trap 300 and the pressure within the second particle trap 400. The differential pressure sensor 700 is connected to the controller 800, and the pressure sensor sends the measured pressure difference to the controller 800, so that the controller 800 generates a corresponding command based on the pressure difference.

As shown in fig. 2, in some embodiments, the apparatus further comprises a controller 800, the controller 800 being configured to receive the pressure differential sent by the differential pressure sensor 700. When the pressure differential reaches the first target value, the controller 800 generates a regeneration command that instructs regeneration of particulate matter in the first and/or second particulate traps 300, 400. It will be appreciated that, as the airflow passes through first particle trap 300 and second particle trap 400, while a majority of the carbonaceous particles have been trapped by first particle trap 300, a very small amount of the carbonaceous particles may be trapped by second particle trap 400, and thus the carbonaceous particles in second particle trap 400 may also be regenerated. The basic principle of regeneration is that particles are oxidized to become carbon dioxide and then discharged to the atmosphere. There are various regeneration modes, and the following three possible regeneration modes are given:

first, the temperature-raising regeneration requires a temperature sensor connected to the controller 800, which measures the temperature in the particle trap and sends the temperature value to the controller 800. When the temperature value reaches the preset temperature, oxygen in the exhaust gas or additionally input oxygen is utilized to supply oxygen, so that carbon-containing particles trapped in the particle trapping device can be subjected to secondary combustion, carbon dioxide is formed, and the carbon dioxide is discharged into the atmosphere.

Second, a fuel injection regeneration mode is to add a set of fuel injectors at the air inlet end of the first particle trap 300, and based on a regeneration command, the fuel injectors inject a small amount of fuel into the first particle trap 300 and/or the second particle trap 400. Oxygen is supplied by oxygen in the exhaust gas or additionally input oxygen, and then the oxygen is ignited by a spark plug or a glow plug, at the moment, carbon-containing particles trapped in the particle trapping device can be subjected to secondary combustion, carbon dioxide is formed, and the carbon dioxide is discharged to the atmosphere.

Third, an electric heating regeneration mode is required, in which an electric conduction device is required, and the controller 800 controls the electric conduction device to be electrified so as to heat the first particle catcher 300 and/or the second particle catcher 400, and oxygen in the exhaust gas or additionally input oxygen is utilized to supply oxygen, so that the particles are promoted to ignite.

The regeneration process may be performed by means of microwave regeneration, regeneration of a fuel additive, or the like, and is not exemplified herein. By regeneration, the particles trapped by the particle trapping device can be subjected to secondary combustion, so that the particle trapping device is prevented from being blocked due to higher content of the particles.

As shown in fig. 2, in some embodiments, when the pressure differential reaches a second target value, the controller 800 generates a replacement instruction that is used to instruct replacement of the second particle trap 400. When the pressure difference reaches the second target value, it is indicated that the particulate trap device is at risk of clogging, and if the particulate trap device is not replaced, the engine power performance may be reduced, and normal use of the exhaust system and the vehicle may be affected. Therefore, by adopting the mode, the phenomenon of blockage of the exhaust system can be avoided in time. In some embodiments, the second target value is greater than the first target value, so that not only can the particulate matter be regenerated in time, but also multiple replacement of the second particulate trap 400 can be avoided, and replacement costs are greatly reduced because the second particulate trap 400 only needs to be replaced when necessary.

In some embodiments, the controller 800 sends the replacement instruction to a display screen in the vehicle, which generates a replacement prompt based on the replacement instruction, such as a text prompt to replace the second particle trap 400. In some embodiments, the controller 800 sends the replacement instruction to a voice system in the vehicle, which generates a voice prompt based on the replacement instruction, such as playing the prompt "replace second particle trap 400" through a horn. Thereby being capable of timely reminding a user to replace the second particle catcher 400 and avoiding the decline of functions of the engine and the exhaust system caused by long-time blockage.

According to the technical scheme provided by the embodiment of the application, the particle trapping device comprises a first particle trap 300 and a second particle trap 400. When the amount of particulate matter trapped in the particulate trapping device is large, which may cause a risk of clogging the particulate trapping device, the second particulate trap 400 may be removed and replaced. Because only a part of the structure of the particle trapping device needs to be replaced, the replacement process is more convenient and has lower cost. It will be appreciated that other parts are generally installed around the particle catcher, and only the second particle catcher 400 needs to be disassembled, so that damage to parts around the particle catcher can be reduced when the second particle catcher 400 is replaced, and maintenance risk and maintenance cost are reduced.

The embodiment of the application also provides a vehicle, which comprises the particle trapping device.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. The specification and examples are to be regarded in an illustrative manner only.

It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A particle catch arrangement, characterized in that the arrangement comprises a first housing (100), a second housing (200), a first particle catcher (300) and a second particle catcher (400);

the first particle catcher (300) is positioned in the first shell (100), the air inlet end of the first shell (100) is connected with the exhaust pipe, and the air outlet end of the first shell (100) is detachably connected with the air inlet end of the second shell (200);

the second particle catcher (400) is positioned in the second shell (200), and the air outlet end of the first particle catcher (300) is detachably connected with the air inlet end of the second particle catcher (400);

the gas exhausted from the exhaust pipe sequentially passes through the first particle catcher (300) and the second particle catcher (400) and is exhausted to the atmosphere;

the air outlet end of the first shell (100) is fixedly provided with a first flange, the air inlet end of the second shell (200) is fixedly provided with a second flange, the first flange and the second flange are fixed together through bolts, a flange pad is arranged between the first flange and the second flange, and the flange pad is annular;

the apparatus further comprises a differential pressure sensor (700), the differential pressure sensor (700) being adapted to measure a difference between a pressure within the first particle trap (300) and a pressure within the second particle trap (400); the device further comprises a controller (800), the controller (800) being configured to receive a pressure difference sent by the differential pressure sensor (700); when the pressure difference reaches a second target value, the controller (800) generates a replacement instruction for instructing replacement of the second particle trap (400);

the controller (800) is configured to send the replacement instruction to a display screen in a vehicle, and the display screen generates replacement prompt information based on the replacement instruction; or the controller (800) is configured to send the replacement instruction to a voice system in the vehicle, the voice system generating voice prompt information based on the replacement instruction.

2. The particle catch arrangement according to claim 1, characterized in that the first particle catch arrangement (300) has a plurality of mutually parallel first air flow channels (310) therein, the first air flow channels (310) being arranged in the air flow direction;

the second particle catcher (400) is internally provided with a plurality of second airflow channels (320) which are parallel to each other, the second airflow channels (320) are arranged along the airflow direction, and the first airflow channels (310) are in one-to-one correspondence with the second airflow channels (320);

the gas exhausted from the exhaust pipe is exhausted to the atmosphere after passing through the first gas flow channel (310) and the second gas flow channel (320) in sequence.

3. The particle capture device of claim 2 wherein the first gas flow channel (310) comprises a first sub-gas flow channel (311) and a second sub-gas flow channel (312), the first sub-gas flow channel (311) and the second sub-gas flow channel (312) being adjacent, a wall of the first sub-gas flow channel (311) communicating with a wall of the second sub-gas flow channel (312);

the air inlet end of the first sub-air flow channel (311) is closed, and the air outlet end of the first sub-air flow channel (311) is open;

the air inlet end of the second sub-air flow channel (312) and the air outlet end of the second sub-air flow channel (312) are both open;

the gas exhausted from the exhaust pipe enters the second sub-gas flow channel (312) through the gas inlet end of the second sub-gas flow channel (312), and then is exhausted into the second gas flow channel (320) through the gas outlet end of the first sub-gas flow channel (311) or the gas outlet end of the second sub-gas flow channel (312).

4. A particle catch arrangement according to claim 3, characterized in that the second gas flow channel (320) comprises a third sub-gas flow channel (321) and a fourth sub-gas flow channel (322), the third sub-gas flow channel (321) and the fourth sub-gas flow channel (322) being adjacent, the wall of the third sub-gas flow channel (321) communicating with the wall of the fourth sub-gas flow channel (322);

the third sub-airflow channel (321) corresponds to the first sub-airflow channel (311), and the fourth sub-airflow channel (322) corresponds to the second sub-airflow channel (312);

the air inlet end of the third sub-air flow channel (321) and the air outlet end of the third sub-air flow channel (321) are both open;

the air inlet end of the fourth sub-air flow channel (322) is open, and the air outlet end of the fourth sub-air flow channel (322) is closed;

the gas discharged from the first gas flow channel (310) enters the third sub gas flow channel (321) or the fourth sub gas flow channel (322) and then is discharged to the atmosphere through the gas outlet end of the third sub gas flow channel (321).

5. The particle capture device of claim 1 further comprising a first gasket (500), the first gasket (500) being located between the first housing (100) and the first particle trap (300), and the first gasket (500) being wrapped around an outer surface of the first particle trap (300).

6. The particle catch arrangement according to claim 1, further comprising a second gasket (600), the second gasket (600) being located between the second housing (200) and the second particle catcher (400), and the second gasket (600) being wrapped around an outer surface of the second particle catcher (400).

7. The particulate trap device of claim 1, wherein the controller (800) generates a regeneration instruction for instructing regeneration of particulate matter in the first particulate trap (300) and/or the second particulate trap (400) when the pressure difference reaches a first target value.

8. A vehicle, characterized in that the vehicle comprises the particle trap apparatus according to any one of claims 1 to 7.