A wind cooling system for a three-way catalyst

Abstract

The application relates to the technical field of three-way catalysts, in particular to a three-way catalyst air cooling system, which comprises a flow guide cover sleeved on the shell of a three-way catalyst, the flow guide cover is in a cylindrical shape, a flow guide plate is fixedly connected in the flow guide cover, the flow guide plate is curved in a spiral shape along the length direction of the flow guide cover, the rotation directions of the two flow guide plates are the same, at least two flow guide plates are arranged at intervals, and one side of the flow guide plate is fixedly connected to the shell, so that the heat dissipation efficiency of the three-way catalyst is improved, and the risk of damage caused by overheating of the three-way catalyst is reduced.

Description

Technical Field

[0001] This application relates to the field of three-way catalytic converter technology, and in particular to a three-way catalytic converter air-cooling system. Background Technology

[0002] The three-way catalytic converter is the most important external purification device installed in a car's exhaust system. It is mainly composed of precious metal catalytic materials such as platinum, palladium, and germanium added to an alloy mesh. It converts harmful gases such as CO, HC, and NOx emitted from car exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. The three-way catalytic converter purifies the car's exhaust by transforming these three harmful gases into harmless ones.

[0003] The normal operating temperature of existing three-way catalytic converters is generally between 400℃ and 800℃. When the catalytic converter is working, it generates a lot of heat, which raises the internal temperature of the three-way catalytic converter. When the temperature exceeds 1000℃, the catalyst coating on the catalyst will sinter and die, and it is also very easy for the vehicle to spontaneously combust.

[0004] The existing technical solutions mentioned above have the following drawbacks: the existing three-way catalytic converters have low heat dissipation efficiency, which can easily lead to overheating and damage. Utility Model Content

[0005] In order to improve the heat dissipation efficiency of the three-way catalytic converter and reduce the risk of damage caused by overheating, this application provides a three-way catalytic converter air cooling system.

[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0007] A three-way catalytic converter air-cooling system includes a flow guide shroud fitted onto the housing of the three-way catalytic converter. The flow guide shroud is cylindrical, and a flow guide plate is fixedly connected inside the flow guide shroud. The flow guide plate is bent into a spiral shape along the length direction of the flow guide shroud. The two flow guide plates have the same spiral direction, and at least two flow guide plates are arranged at intervals. One side of the flow guide plate is fixedly connected to the housing.

[0008] By adopting the above technical solution, the spirally arranged guide plate inside the fairing allows air to move along a spiral path. During vehicle operation, the air flows over the housing of the three-way catalytic converter, reducing the surface temperature difference at different locations on the housing and lowering the risk of damage caused by localized overheating. The fairing and guide plate extend the path of airflow through the housing of the three-way catalytic converter, prolonging the heat exchange time between the air and the housing, improving the cooling efficiency of the air-cooled system, increasing the heat dissipation efficiency of the three-way catalytic converter, reducing the risk of damage caused by overheating, and facilitating the maintenance of the air-cooled system of the three-way catalytic converter.

[0009] Optionally, the two guide vanes are connected together to a heat-conducting cover, which is fitted onto the housing.

[0010] By adopting the above technical solutions, the surface temperature difference at different locations of the three-way catalytic converter housing can be reduced, the cooling efficiency of the three-way catalytic converter's air-cooling cooling can be improved, the heat dissipation efficiency of the three-way catalytic converter can be increased, and the risk of damage caused by overheating of the three-way catalytic converter can be reduced.

[0011] Optionally, an air intake shroud is fixedly attached to the air deflector.

[0012] By adopting the above technical solution, air can be guided into the interior of the air guide, which facilitates the uniform entry of air into the gaps of multiple air guide plates, increases the airflow into the air guide, improves the cooling efficiency of the three-way catalytic converter, enhances the heat dissipation efficiency of the three-way catalytic converter, and reduces the risk of damage caused by overheating of the three-way catalytic converter.

[0013] Optionally, a filter screen is fixed to one end of the air intake shroud.

[0014] By adopting the above technical solutions, large particulate impurities can be blocked from entering the air intake shroud and the air deflector, reducing the wear of the air deflector and the air deflector plate, ensuring the stability and safety of the air-cooling system, and extending the service life of the air-cooling system.

[0015] Optionally, one end of the air intake hood is inclined towards the ground, and the mesh of the filter screen is inclined towards the ground.

[0016] By adopting the above technical solution, large particles of impurities blocked by the filter can be guided to fall to the ground, reducing the damage to the filter caused by the impact of large particles of impurities on the filter, facilitating the uniform entry of air into the gaps of multiple guide plates, and reducing the surface temperature difference at different locations of the three-way catalytic converter housing.

[0017] Optionally, a baffle is provided on the flow guide.

[0018] By adopting the above technical solutions, the structural strength of the bottom of the shell can be improved, reducing the risk of damage to the fairing or three-way catalytic converter caused by flying stone impacts and road surface scraping.

[0019] Optionally, a rubber strip is fixedly connected to the flow guide, the rubber strip is located between the flow guide and the baffle, and the rubber strip is fixedly connected to the baffle.

[0020] By adopting the above technical solutions, the vibration of the fairing or three-way catalytic converter caused by flying stone impacts and road surface scraping can be reduced, ensuring the stability and safety of the air-cooling system and the three-way catalytic converter.

[0021] Optionally, a heat insulation plate is fixed to the flow guide.

[0022] By adopting the above technical solutions, the heat radiation from the high-temperature casing of the three-way catalytic converter to the vehicle can be reduced, ensuring the safety and comfort of vehicle driving.

[0023] In summary, this application has the following technical effects:

[0024] 1. By installing a deflector and a deflector plate, air flows over the housing of the three-way catalytic converter during vehicle operation, reducing the surface temperature difference at different locations on the housing and lowering the risk of damage caused by localized overheating. The deflector and deflector plate also extend the path of airflow over the housing, prolonging the heat exchange time between the air and the housing, improving the cooling efficiency of the air-cooled system, and further reducing the risk of overheating damage. This also facilitates the maintenance of the air-cooled system of the three-way catalytic converter.

[0025] 2. By setting up a heat-conducting cover, the surface temperature difference at different locations of the three-way catalytic converter housing can be reduced, the cooling efficiency of the three-way catalytic converter's air-cooling cooling can be improved, the heat dissipation efficiency of the three-way catalytic converter can be increased, and the risk of damage caused by overheating of the three-way catalytic converter can be reduced.

[0026] 3. By installing baffles, the structural strength of the bottom of the housing can be improved, reducing the risk of damage to the fairing or three-way catalytic converter caused by flying stones impacts and road scrapes. Attached Figure Description

[0027] Figure 1 This is a structural diagram of the object of this application;

[0028] Figure 2 This is a cross-sectional structural diagram of the fairing, air intake, filter, baffle and heat insulation plate of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Shell; 2. Shield; 21. Shield plate; 22. Heat conduction shield; 3. Air intake shield; 4. Filter screen; 5. Baffle; 51. Rubber strip; 6. Heat insulation plate. Detailed Implementation

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] This application discloses a three-way catalytic converter air-cooling system, referring to... Figure 1 and Figure 2The air-cooling system includes a flow guide 2 fitted onto the housing 1 of the three-way catalytic converter. The flow guide 2 is cylindrical, and a flow guide plate 21 is welded to the inner wall of the flow guide 2. The flow guide plate 21 is a strip plate that is bent into a spiral shape along the length of the flow guide 2. Multiple flow guide plates 21 are arranged at intervals, and the spiral direction of the multiple flow guide plates 21 is the same. The side of the flow guide plate 21 away from the flow guide 2 is welded to the housing 1. A heat conduction cover 22 is fitted onto the housing 1 and welded to the housing 1. The heat conduction cover 22 is located between the housing 1 and the flow guide plate 21.

[0032] Reference Figure 1 and Figure 2 The fairing 2 has an air intake hood 3 welded to one end near the front of the vehicle. The air intake hood 3 is fitted onto the housing 1. The section of the air intake hood 3 away from the fairing 2 is conical. The diameter of the end of the air intake hood 3 away from the fairing 2 is larger than the diameter of the other end. The opening of the end of the air intake hood 3 away from the fairing 2 faces the ground. A filter screen 4 is welded to the end of the air intake hood 3 away from the fairing 2. The filter screen 4 covers the opening at one end of the air intake hood 3. The mesh surface of the filter screen 4 is inclined towards the ground.

[0033] Reference Figure 1 and Figure 2 A rubber strip 51 is bonded to the bottom of the flow guide 2. The rubber strip 51 is arranged along the length of the flow guide 2. Multiple rubber strips 51 are arranged at intervals. Multiple rubber strips 51 are connected to a baffle 5 on the side away from the flow guide 2. The surface of the baffle 5 is curved into a downward protruding arc. A heat insulation plate 6 is bonded to the top of the flow guide 2. The heat insulation plate 6 is arranged along the length of the flow guide 2.

[0034] When using this air-cooling system, the spirally arranged guide plate 21 inside the deflector 2 causes the air to move along a spiral path. During vehicle operation, the air flows over the housing 1 of the three-way catalytic converter, reducing the surface temperature difference at different locations of the housing 1 and lowering the risk of damage caused by local overheating of the three-way catalytic converter. By extending the path of the air through the housing 1 of the three-way catalytic converter through the deflector 2 and the guide plate 21, the heat exchange time between the air and the housing 1 of the three-way catalytic converter is extended, improving the cooling efficiency of the air-cooled three-way catalytic converter, increasing the heat dissipation efficiency of the three-way catalytic converter, reducing the risk of damage caused by overheating of the three-way catalytic converter, and facilitating the maintenance of the air-cooled three-way catalytic converter system.

[0035] The heat-conducting cover 22 can reduce the surface temperature difference at different locations of the three-way catalytic converter housing 1, improve the cooling efficiency of the three-way catalytic converter air cooling, improve the heat dissipation efficiency of the three-way catalytic converter, and reduce the risk of damage caused by overheating of the three-way catalytic converter.

[0036] The intake shroud 3 can guide air into the interior of the guide shroud 2, which facilitates the uniform entry of air into the gaps of multiple guide plates 21, increases the airflow into the guide shroud 2, improves the cooling efficiency of the three-way catalytic converter, improves the heat dissipation efficiency of the three-way catalytic converter, and reduces the risk of damage caused by overheating of the three-way catalytic converter.

[0037] The filter screen 4 can block large particles of impurities from entering the intake shroud 3 and the air deflector 2, reducing wear on the air deflector 2 and the air deflector plate 21, ensuring the stability and safety of the air-cooling system, and extending the service life of the air-cooling system. The inclined mesh surface of the filter screen 4 can guide the large particles of impurities blocked by the filter screen 4 to fall to the ground, reducing the damage to the filter screen 4 caused by the impact of large particles of impurities, and facilitating the uniform entry of air into the gaps between the multiple air deflectors 21, reducing the surface temperature difference at different locations of the three-way catalytic converter housing 1.

[0038] The baffle 5 can improve the structural strength of the bottom of the housing 1 and reduce the risk of damage to the fairing 2 or the three-way catalytic converter caused by flying stone impacts and road scrapes. The rubber strip 51 can reduce the vibration of the fairing 2 or the three-way catalytic converter caused by flying stone impacts and road scrapes, ensuring the stability and safety of the air-cooling system and the three-way catalytic converter.

[0039] The heat insulation plate 6 can reduce the heat radiation from the high-temperature shell 1 of the three-way catalytic converter to the vehicle during operation, ensuring the safety and comfort of the vehicle.

[0040] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A three-way catalytic converter air-cooling system, characterized in that, The air-cooling system includes a flow guide (2) fitted onto the housing (1) of the three-way catalytic converter. The flow guide (2) is cylindrical, and a flow guide plate (21) is fixed inside the flow guide (2). The flow guide plate (21) is bent into a spiral shape along the length direction of the flow guide (2). The two flow guide plates (21) have the same spiral direction. At least two flow guide plates (21) are spaced apart. One side of the flow guide plate (21) is fixed to the housing (1).

2. The three-way catalytic converter air-cooling system according to claim 1, characterized in that: The two guide plates (21) are connected to a heat-conducting cover (22), which is fitted onto the housing (1).

3. The three-way catalytic converter air-cooling system according to claim 1, characterized in that: An air intake cover (3) is fixedly attached to the air guide cover (2).

4. The three-way catalytic converter air-cooling system according to claim 3, characterized in that: A filter screen (4) is fixedly connected to one end of the air intake hood (3).

5. A three-way catalytic converter air-cooling system according to claim 4, characterized in that: One end of the air intake hood (3) is inclined toward the ground, and the mesh of the filter screen (4) is inclined toward the ground.

6. The three-way catalytic converter air-cooling system according to claim 1, characterized in that: A baffle (5) is provided on the flow guide (2).

7. A three-way catalytic converter air-cooling system according to claim 6, characterized in that: A rubber strip (51) is fixedly attached to the flow guide (2). The rubber strip (51) is located between the flow guide (2) and the baffle (5). The rubber strip (51) is fixedly attached to the baffle (5).

8. A three-way catalytic converter air-cooling system according to claim 7, characterized in that: A heat insulation plate (6) is fixedly attached to the flow guide (2).

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