Catalyst structure, exhaust gas catalysis method and automobile

Abstract

The present invention provides a catalyst structure, an exhaust gas catalytic method and an automobile. The catalyst structure includes a shell, a first carrier, a second carrier, a partition structure and a guide valve structure. The first carrier and the second carrier are both arranged in the shell, and the first carrier and the second carrier are both located between the air inlet and the air outlet of the shell. The first carrier and the second carrier are arranged radially spaced from each other in the shell. The partition structure is arranged between the first carrier and the second carrier. The guide valve structure is rotatably installed in the shell, and the guide valve structure is arranged between the second carrier and the air inlet. The guide valve structure is used to rotate to form a first cavity structure with the partition structure, so that the second carrier is in the first cavity structure and isolated from the air inlet. Only the first carrier needs to be heated, and fewer carriers need to be heated, so that the first carrier can be quickly ignited, thereby reducing the catalyst ignition time, and the first carrier can quickly ignite to reduce the pollutants emitted.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a catalyst structure, an exhaust gas catalysis method and an automobile. Background Art

[0002] As the number of cars continues to increase, the conflict between cars and the environment is becoming increasingly severe, so environmental regulations are becoming more and more stringent on car emissions. In particular, the Euro VII and National VII regulations are about to be introduced, and traditional car manufacturers are under increasing pressure. If the overall emission level is not resolved or reduced, it is estimated that traditional cars will find it difficult to meet their requirements, and emissions during the cold start phase exceed more than 30% of total emissions.

[0003] At present, traditional automobile OEMs mainly reduce emissions during the ignition stage and thus reduce the total emission level through calibration optimization, for example, increasing the cold start idle speed and air-fuel ratio to accelerate the catalyst ignition. However, increasing the cold start idle speed will increase emissions. In order to take into account the catalytic efficiency of the catalyst, the catalyst volume cannot be too small, which will lead to a longer ignition time. Therefore, the basis for shortening the catalyst ignition time through calibration optimization has encountered a bottleneck and it is almost impossible to optimize it further.

[0004] There is also a method of using electric heating catalyst, but the electric heating catalyst requires a lot of electricity, and the heating time is too long and the power is low under the 12V state, so it can hardly meet the use requirements for traditional vehicles. At the same time, the battery power will be low due to long-term heating, and the engine needs to be started to charge the battery, and the engine idling also increases the total emission invisibly.

[0005] There are also car manufacturers and catalyst manufacturers who have tried to use molecular sieve adsorption, but its structure is complex, and the molecular sieve is easy to desorb before the catalyst ignites, which makes it impossible to achieve the purpose of catalytic conversion of pollutants emitted during cold start, and the molecular sieve is easy to age at high temperatures. Its high cost and poor durability have led to the final solution not being industrialized. Summary of the invention

[0006] The problem solved by the present invention is how to shorten the ignition time of the catalyst during the cold start phase, thereby reducing the pollutants discharged during the cold start phase.

[0007] To solve the above problems, the present invention provides a catalyst structure, which includes a shell, a first carrier, a second carrier, a partition structure and a guide valve structure, wherein the first carrier and the second carrier are both arranged in the shell and located between the air inlet and the air outlet of the shell, and the first carrier and the second carrier are arranged at intervals along the radial direction of the shell, the partition structure is arranged between the first carrier and the second carrier, the guide valve structure is rotatably installed in the shell, and the guide valve structure is arranged between the second carrier and the air inlet, and the guide valve structure is used to rotate to form a first cavity structure with the partition structure, so that the second carrier is in the first cavity structure and isolated from the air inlet.

[0008] The technical effect of the present invention is as follows: when the engine is in the cold start stage, the guide valve structure can be first rotated to form a first cavity structure with the partition structure, so that the second carrier is located in the first cavity structure and isolated from the air inlet. At this time, the exhaust gas cannot pass through the second carrier after entering the shell, and can only flow through the first carrier, and is discharged from the outlet after being catalyzed by the first carrier, so that only the first carrier needs to be heated. Because there are fewer carriers to be heated, the first carrier can be quickly ignited, thereby reducing the ignition time of the catalyst, and the rapid ignition of the first carrier can reduce the pollutants emitted, and in the process of heating the first carrier, the first carrier can also transfer heat to the second carrier to heat the second carrier, thereby shortening the subsequent heating time of the second carrier. For example, after a predetermined time or after the temperature of the first carrier reaches a predetermined temperature, the guide valve structure can be rotated in a direction away from the second carrier, so that the exhaust gas can flow from the first carrier and the second carrier, and the second carrier starts to be heated at this time. At the same time, the high-temperature exhaust gas can also heat the second carrier, and the second carrier can also catalyze the exhaust gas. Therefore, the ignition time of the catalyst structure can be shortened, thereby reducing the pollutants emitted during the cold start stage.

[0009] Preferably, the guide valve structure comprises a driving part and a valve plate structure, the valve plate structure is rotatably mounted in the housing, and the driving part is drivingly connected to the valve plate structure to drive the valve plate structure to rotate relative to the second carrier.

[0010] Preferably, the driving part comprises a motor and a driving shaft, the motor is drivingly connected to the driving shaft, and the driving shaft is connected to the valve plate structure.

[0011] Preferably, the driving part further comprises a motor gear and a shaft gear, the motor gear is mounted on the output shaft of the motor, the motor gear is meshed with the shaft gear, and the shaft gear is mounted on the driving shaft.

[0012] Preferably, the valve plate structure includes a plurality of valve plates, the driving portion includes a plurality of driving shafts, each of the valve plates is connected to a corresponding one of the driving shafts, and the valve plate is a fan-shaped structure.

[0013] Preferably, the partition structure includes a partition body and a plurality of side partitions, the partition body is located between the first carrier and the second carrier, the plurality of side partitions are arranged in the second carrier at radial intervals along the shell, and the second carrier is divided into a plurality of second sub-carriers, and the valve plate is used to rotate to form a second cavity structure with the corresponding two adjacent side partitions, so that the second sub-carrier is in the second cavity structure and isolated from the air inlet.

[0014] Preferably, the guide valve structure further includes a return spring, wherein the return spring is connected to the valve plate structure, and the return spring is used to drive the valve plate structure to rotate in a direction away from the second carrier.

[0015] Preferably, the second carrier is sleeved outside the first carrier, the partition structure is sleeved outside the first carrier, and the partition structure is located between the first carrier and the second carrier.

[0016] The present invention also provides a tail gas catalysis method, which uses the catalyst structure as described above to catalyze the tail gas, comprising the following steps:

[0017] Driving the guide valve structure to rotate to form a first cavity structure with the partition structure to isolate the second carrier from the air inlet;

[0018] When the exhaust gas enters the housing from the air inlet, the first carrier is heated, so that the exhaust gas is discharged from the air outlet after being catalyzed by the first carrier;

[0019] After a predetermined time has passed or the temperature of the first carrier reaches a predetermined temperature, the guide valve structure is driven to rotate in a direction away from the second carrier, so that the exhaust gas flows through the first carrier and the second carrier at the same time.

[0020] The exhaust gas catalysis method of the present invention has the same beneficial effects as the catalyst structure, which will not be described in detail here.

[0021] The present invention also provides a vehicle, which comprises the catalyst structure as described above.

[0022] The beneficial effects of the automobile of the present invention and the catalyst structure are the same and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a guide valve structure of a catalyst structure provided by an embodiment of the present invention in an open state;

[0024] Figure 2 A schematic structural diagram of a guide valve structure of a catalyst structure provided by an embodiment of the present invention in a closed state;

[0025] Figure 3 for Figure 1 Cross-sectional view of AA in the middle;

[0026] Figure 4 for Figure 2 Cross-section of BB.

[0027] Description of reference numerals:

[0028] 1. Shell; 11. Air inlet; 12. Air outlet; 2. First carrier; 3. Second carrier; 4. Partition structure; 5. Guide valve structure; 51. Motor; 52. Drive shaft; 53. Valve plate structure; 531. Valve plate. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] It should be noted that, in the coordinate system XY provided herein, the positive direction of the X axis represents the right, the reverse direction of the X axis represents the left, the positive direction of the Y axis represents the top, and the reverse direction of the Y axis represents the bottom. At the same time, it should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein.

[0031] See also Figures 1 to 4 As shown, a catalyst structure of an embodiment of the present invention includes a shell 1, a first carrier 2, a second carrier 3, a partition structure 4 and a guide valve structure 5, wherein the first carrier 2 and the second carrier 3 are both arranged in the shell 1 and located between the air inlet 11 and the air outlet 12 of the shell 1, and the first carrier 2 and the second carrier 3 are arranged at intervals along the radial direction of the shell 1, the partition structure 4 is arranged between the first carrier 2 and the second carrier 3, the guide valve structure 5 is rotatably installed in the shell 1, and the guide valve structure 5 is arranged between the second carrier 3 and the air inlet 11, and the guide valve structure 5 is used to rotate to form a first cavity structure with the partition structure 4, so that the second carrier 3 is in the first cavity structure and isolated from the air inlet 11.

[0032] Specifically, the shape of the housing 1 may be a cylinder or a spindle. Figure 1 The Y-axis direction is the length direction of the shell 1, and the opposite ends of the shell 1 are respectively provided with an air inlet 11 and an air outlet 12. The first carrier 2 and the second carrier 3 are both arranged in the shell 1, the first carrier 2 is located between the air inlet 11 and the air outlet 12, and the second carrier 3 is also located between the air inlet 11 and the air outlet 12, and the first carrier 2 and the second carrier 3 are arranged at intervals along the radial direction of the shell 1. Figure 1 The X-axis direction is the radial direction of the shell 1.

[0033] In this embodiment, the first carrier 2 and the second carrier 3 can be arranged in a radial direction of the shell 1. For example, the first carrier 2 and the second carrier 3 can be designed to be semi-cylindrical, and the semi-cylindrical shape is obtained by cutting a cylinder along its height direction. In other embodiments, the second carrier 3 can be sleeved outside the first carrier 2.

[0034] In this embodiment, the end surface of the first carrier 2 close to the air inlet 11 and the end surface of the second carrier 3 close to the air inlet 11 can be coplanar, that is, when the exhaust gas enters the shell 1 from the air inlet 11, it can contact the first carrier 2 and the second carrier 3 at the same time.

[0035] The partition structure 4 is arranged between the first carrier 2 and the second carrier 3, and can separate the first carrier 2 and the second carrier 3, so as to prevent the exhaust gas from communicating between the first carrier 2 and the second carrier 3, and the partition structure 4 can be in contact with the first carrier 2 and the second carrier 3 respectively. When the first carrier 2 is heated, the first carrier 2 can transfer heat to the second carrier 3 through the partition structure 4 to heat the second carrier 3. Preferably, the partition structure 4 can be made of metal material to improve the heat transfer capacity.

[0036] The guide valve structure 5 is rotatably installed in the shell 1, and the guide valve structure 5 is arranged between the second carrier 3 and the air inlet 11. The guide valve structure 5 can be rotated relative to the second carrier 3 to form a first cavity structure with the partition structure 4, enclosing the second carrier 3 so that the second carrier 3 is located in the first cavity structure and isolated from the air inlet 11, so that the exhaust gas cannot pass through the second carrier 3 after entering the shell 1 and can only flow through the first carrier 2.

[0037] When the engine is in the cold start stage, the guide valve structure 5 can be rotated to form a first cavity structure with the partition structure 4, so that the second carrier 3 is located in the first cavity structure and isolated from the air inlet 11. At this time, the guide valve structure 5 is in a closed state. When the exhaust gas enters the housing 1, it cannot pass through the second carrier 3, but can only flow through the first carrier 2 and be discharged from the outlet 12 after being catalyzed by the first carrier 2. Therefore, at this time, only the first carrier 2 needs to be heated, that is, less carriers need to be heated, so that the first carrier 2 can be ignited quickly, thereby reducing the catalyst ignition time. The rapid ignition of the first carrier 2 can reduce the pollutants emitted during the cold start stage.

[0038] And in the process of heating the first carrier 2, the first carrier 2 can also transfer heat to the second carrier 3 to heat the second carrier 3, thereby shortening the subsequent heating time of the second carrier 3. After a predetermined time has passed or the temperature of the first carrier 2 reaches a predetermined temperature, preferably, the predetermined time can be 5 seconds, and the predetermined temperature can be 250°C, the guide valve structure 5 can be rotated in a direction away from the second carrier 3. At this time, the guide valve structure 5 is in an open state, so that the exhaust gas can flow from the first carrier 2 and the second carrier 3 at the same time, and the second carrier 3 begins to be heated. At the same time, the high-temperature exhaust gas can also heat the second carrier 3, so that the second carrier 3 can be quickly ignited. Similarly, the rapid ignition of the second carrier 3 can also reduce the pollutants emitted. Therefore, the ignition time of the catalyst structure can be shortened, thereby reducing the pollutants emitted during the cold start stage.

[0039] See also Figures 1 to 4 As shown, in some embodiments, the guide valve structure 5 includes a driving part and a valve plate structure 53, the valve plate structure 53 is rotatably installed in the shell 1, and the driving part is drivingly connected to the valve plate structure 53 to drive the valve plate structure 53 to rotate relative to the second carrier 3.

[0040] Specifically, the guide valve structure 5 may include a driving part and a valve plate structure 53, and the valve plate structure 53 may be rotatably installed in the housing 1. To be more specific, the driving part may provide power to drive the valve plate structure 53 to rotate relative to the second carrier 3. By driving the valve plate structure 53 to rotate by the driving part, the valve plate structure 53 may be conveniently controlled to close or open the passage between the second carrier 3 and the air inlet 11, thereby improving the degree of automation.

[0041] In some embodiments, the driving unit includes a motor 51 and a driving shaft 52 , the motor 51 is drivingly connected to the driving shaft 52 , and the driving shaft 52 is connected to the valve plate structure.

[0042] Specifically, the driving part may include a motor 51 and a driving shaft, the output shaft of the motor 51 may be drivingly connected to the driving shaft 52, and the driving shaft 52 may be connected to the valve plate structure. To be more specific, the driving shaft 52 may be inserted into the housing 1 from the side wall of the housing 1, and one end of the driving shaft 52 is located inside the housing 1, and the other end of the driving shaft 52 is located outside the housing 1, the driving shaft 52 may rotate relative to the housing 1, and the valve plate structure 53 may be connected to one end of the driving shaft 52 located inside the housing 1, so that the driving shaft 52 may drive the valve plate structure 53 to rotate, and one end of the driving shaft 52 located outside the housing 1 may be drivingly connected to the motor 51. The motor 51 may drive the valve plate structure 53 to rotate more smoothly through the driving shaft 52.

[0043] In some embodiments, the driving unit further includes a motor gear and a shaft gear, wherein the motor gear is mounted on the output shaft of the motor 51 , the motor gear is meshed with the shaft gear, and the shaft gear is mounted on the driving shaft 52 .

[0044] Specifically, the driving part may also include a motor gear and a shaft gear. The motor gear may be installed on the output shaft of the motor 51, and the motor gear may be meshed with the shaft gear. The shaft gear may be installed on the driving shaft 52. Through the transmission of the motor gear and the shaft gear, the motor 51 drives the driving shaft 52 to rotate more smoothly, and the rotation speed of the driving shaft 52 may also be controlled by designing the transmission ratio of the motor gear and the shaft gear.

[0045] See also Figure 3 and Figure 4 As shown, in some embodiments, the valve plate structure 53 includes a plurality of valve plates 531, the driving portion includes a plurality of driving shafts 52, each of the valve plates 531 is connected to a corresponding one of the driving shafts 52, and the valve plates 531 are fan-shaped structures.

[0046] Specifically, the valve plate structure 53 may include multiple valve plates 531, and the multiple valve plates 531 may be combined into a structure having the same cross-sectional shape as the second carrier 3. In this embodiment, the second carrier 3 may be sleeved outside the first carrier 2, and its cross-sectional shape may be an annular structure, that is, multiple valve plates 531 of fan-shaped structure may be combined into an annular structure. In other embodiments, the cross-sectional shape of the second carrier 3 may be other structures.

[0047] To be more clear, in this embodiment, the valve plate structure 53 can be divided into 8 equal parts, each part is a valve plate 531, and 8 driving shafts 52 can also be provided. Each valve plate 531 can be installed on the corresponding driving shaft 52, and the 8 valve plates 531 can be driven to rotate in the direction close to the second carrier 3, so that the 8 valve plates 531 form an annular structure and form a first cavity structure with the partition structure 4, so that the second carrier 3 is located in the first cavity structure, so that the second carrier 3 is isolated from the air inlet 11.

[0048] In other embodiments, the valve plate structure 53 may include other numbers of valve plates 531. By providing multiple valve plates 531, the valve plate structure 53 can be easily rotated in the housing 1. If the valve plate structure 53 is a whole large plate, it may not be able to rotate in the housing 1.

[0049] See also Figure 3 and Figure 4 As shown, in some embodiments, the partition structure 4 includes a partition body and a plurality of side partitions, the side partitions are connected to the partition body, the partition body is located between the first carrier 2 and the second carrier 3, and the plurality of side partitions are arranged in the second carrier 3 at radial intervals along the shell 1 to divide the second carrier 3 into a plurality of second sub-carriers, and the valve plate 531 is used to rotate to form a second cavity structure with the corresponding two adjacent side partitions, so that the second sub-carrier is in the second cavity structure and isolated from the air inlet 11.

[0050] Specifically, the partition structure 4 may include a partition body and multiple side partitions, and the multiple side partitions are all connected to the partition body. The partition body can be located between the first carrier 2 and the second carrier 3 to separate the first carrier 2 and the second carrier 3. The valve plate structure can be rotated to form a first cavity structure with the partition body.

[0051] A plurality of side partitions can be arranged in the second carrier 3 at intervals along the radial direction of the shell 1, and the second carrier 3 can be divided into a plurality of second sub-carriers. Each valve plate can be arranged between two adjacent side partitions, and each valve plate can be rotated to form a second cavity structure with the corresponding two adjacent side partitions, enclosing the second sub-carrier so that the second sub-carrier is located in the second cavity structure and isolated from the air inlet 11, so that the exhaust gas cannot flow through the second sub-carrier after entering the shell 1.

[0052] After the first carrier 2 is ignited, the multiple valve plates 531 are controlled to rotate in a direction away from the second carrier 3. They can rotate simultaneously or in sequence. If they rotate in sequence, the high-temperature exhaust gas can pass through the multiple second sub-carriers in sequence according to the order in which the valve plates are opened, and the multiple second sub-carriers are heated in sequence, which can speed up the ignition time of the second sub-carriers and make the control more precise, thereby further reducing the pollutants emitted during the cold start stage.

[0053] In some embodiments, the guide valve structure 5 further includes a return spring, which is connected to the valve plate structure 53 , and is used to drive the valve plate structure 53 to rotate in a direction away from the second carrier 3 .

[0054] Specifically, the guide valve structure 5 may further include a return spring. In this embodiment, the return spring may be a coil spring. One end of the return spring may be connected to the valve plate structure 53 , and the other end of the return spring may be connected to the second carrier 3 .

[0055] When the driving unit drives the valve plate structure 53 to rotate in the direction close to the partition structure 4, and the valve plate structure 53 and the partition structure 4 form a cavity structure, the return spring is deformed, for example, the return spring may be compressed or stretched. Under the power provided by the driving unit, the valve plate structure 53 can maintain the state of forming the first cavity structure with the partition structure 4.

[0056] When the driving unit stops providing power to the valve plate structure 53, the return spring can drive the valve plate structure 53 to return automatically, that is, the valve plate structure 53 rotates in a direction away from the second carrier 3. To be more specific, the valve plate structure 53 stands up, and the exhaust gas can flow through the first carrier 2 and the second carrier 3. The return spring can facilitate the automatic return of the valve plate structure 53 and simplify the method of adjusting the valve plate structure 53.

[0057] See also Figure 1 and Figure 2 As shown, in some embodiments, the cross-sectional size of the first carrier 2 is equal to or greater than the size of the air inlet 11 .

[0058] Specifically, the size of the first carrier 2 can be set according to the characteristics of each engine. In this embodiment, the cross-sectional area of ​​the first carrier 2 can be designed to be equal to or larger than the size of the air inlet 11. Preferably, the cross-sectional area of ​​the first carrier 2 is designed to be equal to the size of the air inlet 11. When the valve plate structure 53 isolates the second carrier 3 from the air inlet 11, the exhaust gas entering the housing 1 can fully flow through the first carrier 2, which can prevent the exhaust gas entering the housing 1 from being unable to be discharged in time.

[0059] See also Figure 1 and Figure 3 As shown, in some embodiments, the second carrier 3 is sleeved outside the first carrier 2 , the partition structure 4 is sleeved outside the first carrier 2 , and the partition structure 4 is located between the first carrier 2 and the second carrier 3 .

[0060] Specifically, in combination with the principle of fluid uniformity, the shape of the shell 1 can be designed to be cylindrical. In this embodiment, the first carrier 2 can be designed to be cylindrical, and the first carrier 2 can be located in the middle of the shell 1. Preferably, the axis of the first carrier 2 can be coaxial with the axis of the shell 1. The second carrier 3 can be an annular structure, and the second carrier 3 can be sleeved outside the first carrier 2. The partition structure 4 can also be designed to be an annular plate structure, and the partition structure 4 can be sleeved outside the first carrier 2, and the partition structure 4 can be arranged between the first carrier 2 and the second carrier 3.

[0061] Designing the first carrier 2 as a cylinder, and designing the second carrier 3 and the partition structure 4 as an annular structure can increase the contact area between the partition structure 4 and the first carrier 2. Similarly, the contact area between the partition structure 4 and the second carrier 3 can also be increased, which can make the heat transfer effect between the first carrier 2 and the second carrier 3 better and further shorten the ignition time of the second carrier 3.

[0062] Another embodiment of the present invention provides an exhaust gas catalytic method, which uses the catalyst structure as described above to catalyze the exhaust gas, and the method includes the following steps:

[0063] S1: driving the guide valve structure 5 to rotate to form a first cavity structure with the partition structure 4 to isolate the second carrier 3 from the air inlet 11;

[0064] See also Figure 1 As shown, specifically, step S1 includes: when the engine is in the cold start stage, the guide valve structure 5 can be first rotated to form a first cavity structure with the partition structure 4, so that the second carrier 3 is located in the first cavity structure and isolated from the air inlet 11. At this time, after the exhaust gas enters the shell 1, it cannot pass through the second carrier 3 and can only flow through the first carrier 2.

[0065] S2: When the exhaust gas enters the housing 1 from the air inlet 11, the first carrier 2 is heated, so that the exhaust gas is discharged from the air outlet 12 after being catalyzed by the first carrier 2;

[0066] Specifically, the exhaust gas can enter the shell 1 from the air inlet 11, and be discharged from the air outlet 12 after being catalyzed by the first carrier 2. Therefore, at this time, only the first carrier 2 needs to be heated. Because less carriers need to be heated, the first carrier 2 can be quickly ignited, thereby reducing the ignition time of the catalyst. The rapid ignition of the first carrier 2 can reduce the emitted pollutants.

[0067] S3: after a predetermined time has passed or the temperature of the first carrier 2 reaches a predetermined temperature, the guide valve structure 5 is driven to rotate in a direction away from the second carrier 3 so that the exhaust gas flows through the first carrier 2 and the second carrier 3 at the same time.

[0068] Specifically, after a predetermined time has passed or the temperature of the first carrier 2 has reached a predetermined temperature, preferably, the predetermined time may be 5 seconds, and the predetermined temperature range may be above 250°C, the guide valve structure 5 may be rotated in a direction away from the second carrier 3, so that the exhaust gas may flow through the second carrier 3, and the second carrier 3 may begin to be heated. At the same time, the high-temperature exhaust gas may also heat the second carrier 3, so that the second carrier 3 may be quickly ignited. Similarly, the rapid ignition of the second carrier 3 may also reduce the pollutants emitted. Therefore, the ignition time of the catalyst structure may be shortened, thereby reducing the pollutants emitted during the cold start phase.

[0069] A vehicle according to another embodiment of the present invention comprises the catalyst structure as described above.

[0070] The beneficial effects of the automobile of the present invention and the catalyst structure are the same and will not be described in detail here.

[0071] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A catalyst structure, characterized in that: The invention comprises a shell (1), a first carrier (2), a second carrier (3), a partition structure (4) and a guide valve structure (5), wherein the first carrier (2) and the second carrier (3) are both arranged in the shell (1) and located between an air inlet (11) and an air outlet (12) of the shell (1), and the first carrier (2) and the second carrier (3) are arranged at intervals along the radial direction of the shell (1), the partition structure (4) is arranged between the first carrier (2) and the second carrier (3), the guide valve structure (5) is rotatably installed in the shell (1), and the guide valve structure (5) is arranged between the second carrier (3) and the air inlet (11), and the guide valve structure (5) is used to rotate to form a first cavity structure with the partition structure (4) so ​​that the first carrier (2) and the second carrier (3) are arranged at intervals along the radial direction of the shell (1), the partition structure (4) is arranged between the first carrier (2) and the second carrier (3), and the guide valve structure (5) is used to rotate to form a first cavity structure with the partition structure (4) so ​​that the first carrier (2) and the second carrier (3) are arranged at intervals along the radial direction of the shell (1). The second carrier (3) is located in the first cavity structure and isolated from the air inlet (11); the guide valve structure (5) includes a valve plate structure (53), the valve plate structure (53) includes a plurality of valve plates (531), the partition structure (4) includes a partition body and a plurality of side partitions, the side partitions are connected to the partition body, the partition body is located between the first carrier (2) and the second carrier (3), the plurality of side partitions are arranged in the second carrier (3) along the radial direction of the shell (1) to separate the second carrier (3) into a plurality of second sub-carriers, the valve plate (531) is used to rotate to form a second cavity structure with the corresponding two adjacent side partitions, so that the second sub-carrier is located in the second cavity structure and isolated from the air inlet (11).

2. The catalyst structure according to claim 1, characterized in that: The guide valve structure (5) further comprises a driving unit, the valve plate structure (53) is rotatably mounted in the housing (1), and the driving unit is drivingly connected to the valve plate structure (53) to drive the valve plate structure (53) to rotate relative to the second carrier (3).

3. The catalyst structure according to claim 2, characterized in that: The driving unit comprises a motor (51) and a driving shaft (52); the motor (51) is drivingly connected to the driving shaft (52); and the driving shaft (52) is connected to the valve plate structure (53).

4. The catalyst structure according to claim 3, characterized in that: The driving part further comprises a motor gear and a shaft gear, wherein the motor gear is mounted on the output shaft of the motor (51), the motor gear is meshed with the shaft gear, and the shaft gear is mounted on the driving shaft (52).

5. The catalyst structure according to claim 3, characterized in that: The driving portion comprises a plurality of driving shafts (52), each of the valve plates (531) is connected to a corresponding one of the driving shafts (52), and the valve plates (531) are of a fan-shaped structure.

6. The catalyst structure according to claim 2, characterized in that: The guide valve structure (5) further comprises a return spring, wherein the return spring is connected to the valve plate structure (53), and the return spring is used to drive the valve plate structure (53) to rotate in a direction away from the second carrier (3).

7. The catalyst structure according to claim 1, characterized in that: The second carrier (3) is sleeved outside the first carrier (2), the partition structure (4) is sleeved outside the first carrier (2), and the partition structure (4) is located between the first carrier (2) and the second carrier (3).

8. A tail gas catalytic method, characterized in that: The catalyst structure according to any one of claims 1 to 7 is used to catalyze the exhaust gas, comprising the following steps: Driving the guide valve structure (5) to rotate until it and the partition structure (4) form a first cavity structure, so as to isolate the second carrier (3) from the air inlet (11); When the exhaust gas enters the housing (1) from the air inlet (11), the first carrier (2) is heated, so that the exhaust gas is catalyzed by the first carrier (2) and then discharged from the air outlet (12); After a predetermined time has passed or the temperature of the first carrier (2) has reached a predetermined temperature, the guide valve structure (5) is driven to rotate in a direction away from the second carrier (3), so that the exhaust gas flows through the first carrier (2) and the second carrier (3) at the same time.

9. A car, characterized in that: The catalyst structure comprises the catalyst structure as claimed in any one of claims 1 to 7.

Images