Catalytic converter for hybrid electric vehicle

Abstract

The utility model relates to the technical field of catalytic converters, and discloses a catalytic converter for a hybrid electric vehicle, which comprises a first shell, the surface of the first shell is fixedly connected with a second shell, the inner wall of the second shell and the front and rear sides of the first shell are fixedly connected with hollow cylinders, the inner walls of the hollow cylinders are fixedly connected with fans, and the fans are fixedly connected with the first shell. The inner wall of the hollow cylinder is fixedly connected with an electric heating pipe. Through cooperation of the first shell, the second shell, the hollow cylinder, the fan, the air groove, the breathable heating plate and the second air hole, cooling liquid in the electric heating pipe and the spiral pipe can heat air in the breathable heating plate and the second shell, and a catalyst carrier is heated through hot air in the breathable heating plate and the second shell at the same time; meanwhile, by reducing the length of the catalyst carrier, the catalyst carrier can be rapidly heated to the specified temperature through hot air, and then the catalyst carrier in the catalyst can rapidly reach the ignition temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of catalysts, in particular to a catalyst for a hybrid vehicle. Background Art

[0002] The catalyst plays a very important role in the automobile exhaust system. It can convert harmful substances in automobile exhaust, such as carbon monoxide, hydrocarbons and nitrogen oxides, into harmless substances such as carbon dioxide, water and nitrogen through oxidation and reduction reactions. This conversion process can significantly reduce the emission of pollutants in automobile exhaust and is of great significance to environmental protection.

[0003] A hybrid vehicle is a vehicle whose vehicle drive system is composed of two or more single drive systems that can operate simultaneously. The vehicle's driving power is provided by the single drive systems individually or jointly according to the actual vehicle driving state.

[0004] At present, most catalysts used in hybrid vehicles heat the catalyst carrier in the catalyst by three different heating methods (engine exhaust heating, motor coolant heating and electric heating). For example, Chinese Patent Publication No. CN117780479A discloses a hybrid vehicle catalyst and its heating method and system. However, when heating the catalyst carrier in the catalyst, the catalyst carrier has a large volume, which leads to a slow heating rate of the catalyst carrier, resulting in poor treatment effect of the catalyst on the initial exhaust gas of the hybrid vehicle. At the same time, since the flange on the catalyst is mostly fixed by welding, the user cannot replace the flange on the catalyst as needed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, when heating the catalyst carrier in the catalyst, due to the large volume of the catalyst carrier, the heating speed of the catalyst carrier is slow, which leads to the poor treatment effect of the catalyst on the initial exhaust gas of the hybrid vehicle. At the same time, since the flange on the catalyst is mostly fixed by welding, the user cannot replace the flange on the catalyst as needed, and a catalyst for a hybrid vehicle is proposed.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A catalyst for a hybrid vehicle comprises a first shell, a second shell is fixedly connected to the surface of the first shell, a hollow cylinder is fixedly connected to the inner wall of the second shell and the front and rear sides of the first shell, a fan is fixedly connected to the inner wall of the hollow cylinder, an electric heating tube is fixedly connected to the inner wall of the hollow cylinder, an air groove is provided on the side of the hollow cylinder away from the first shell, a first through hole is provided on the upper and lower sides of the hollow cylinder, a second through hole is provided on the upper surface of the second shell, a spiral tube is fixedly connected to the inner wall of the first through hole and the inner wall of the second through hole, a breathable heating plate is fixedly connected to the inner wall of the first shell, a catalyst carrier is fixedly connected to the left and right sides of the breathable heating plate and the inner wall of the first shell, and a second air hole is provided on the front and rear sides of the first shell.

[0008] Preferably, the electric heating tube is located between the spiral tube and the fan, and the fan is located between the air groove and the electric heating tube.

[0009] Preferably, the breathable heating plate includes a cylinder, the inner wall of the first shell and the side of the catalyst carrier are fixedly connected to the surface of the cylinder, the front and rear sides of the cylinder are provided with first air holes, the inner wall of the cylinder is fixedly connected to a circular plate, the inside of the circular plate is provided with a circular hole, and the inner wall of the circular hole is fixedly connected to a circular tube.

[0010] Preferably, the center of the first pore and the center of the second pore are on the same horizontal line.

[0011] Preferably, a circular ring is fitted on the surface of the first shell, a flange is fixedly connected to the surface of the circular ring, a positioning block is fixedly connected to the surface of the first shell, a positioning groove is provided on the inner wall of the circular ring, the inner wall of the positioning groove contacts the surface of the positioning block, and a groove is provided on the inner wall of the circular ring.

[0012] Preferably, the shape of the longitudinal section of the groove is the same as the shape of the longitudinal section of the positioning block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] (1) The utility model cooperates with the first shell, the second shell, the hollow cylinder, the fan, the air groove, the breathable heating plate and the second air hole so that the coolant in the electric heating tube and the spiral tube can heat the air in the breathable heating plate and the second shell, and the catalyst carrier is heated by the hot air in the breathable heating plate and the second shell at the same time. At the same time, by reducing the length of the catalyst carrier, the hot air can quickly heat the catalyst carrier to a specified temperature, thereby enabling the catalyst carrier in the catalyst to quickly reach the ignition temperature.

[0015] (2) The utility model provides a circular ring, a flange, a positioning block, a positioning groove and a groove. When the positioning block contacts the positioning groove, the flange cannot rotate on the first shell through the cooperation of the positioning block and the positioning groove. The first shell can be fixed on the exhaust pipe through the cooperation of the flange, bolts and nuts. When the positioning block is aligned with the groove, the flange can be directly removed from the first shell. Furthermore, through the cooperation of the circular ring, the flange, the positioning block, the positioning groove and the groove, the flange and the first shell are convenient to disassemble and assemble, so that the user can replace the flange on the catalyst as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Sectional view at the middle BB;

[0019] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0020] Figure 5 It is a front view of the first shell in the utility model;

[0021] Figure 6 It is a top view of the hollow core tube of the utility model;

[0022] Figure 7 It is a front view of the spiral tube in the utility model;

[0023] Figure 8 It is a front view of the breathable heating plate in the utility model;

[0024] Fig. 9 for Figure 8 Sectional view at DD in the middle;

[0025] Fig.10 It is a side view of the flange in the utility model.

[0026] In the figure: 1. first shell; 2. second shell; 3. hollow cylinder; 4. fan; 5. electric heating tube; 6. air groove; 7. first through hole; 8. second through hole; 9. spiral tube; 10. breathable heating plate; 101. cylinder; 102. first air hole; 103. round plate; 104. round hole; 105. round tube; 11. catalyst carrier; 12. second air hole; 13. ring; 14. flange; 15. positioning block; 16. positioning groove; 17. groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] Embodiment 1:

[0030] Reference Figure 1-9 A catalyst for a hybrid vehicle comprises a first shell 1, a second shell 2 is fixedly connected to the surface of the first shell 1, a hollow cylinder 3 is fixedly connected to the inner wall of the second shell 2 and the front and rear sides of the first shell 1, a fan 4 is fixedly connected to the inner wall of the hollow cylinder 3, an electric heating pipe 5 is fixedly connected to the inner wall of the hollow cylinder 3, and the air in the hollow cylinder 3 is heated by the electric heating pipe 5, an air groove 6 is provided on the side of the hollow cylinder 3 away from the first shell 1, a first through hole 7 is provided on the upper and lower sides of the hollow cylinder 3, a second through hole 8 is provided on the upper surface of the second shell 2, and the inner wall of the first through hole 7 and the inner wall of the second through hole 8 are fixedly connected There is a spiral tube 9, and the high-temperature coolant flowing in the spiral tube 9 can heat the air in the hollow tube 3 and the second shell 2. The electric heating tube 5 is located between the spiral tube 9 and the fan 4, and the fan 4 is located between the air groove 6 and the electric heating tube 5. The inner wall of the first shell 1 is fixedly connected with a breathable heating plate 10, and the left and right sides of the breathable heating plate 10 and the inner wall of the first shell 1 are fixedly connected with a catalyst carrier 11. The front and rear sides of the first shell 1 are provided with second air holes 12. When the fan 4 is turned on, the airflow generated by the fan 4 allows the air in the second shell 2, the hollow tube 3 and the breathable heating plate 10 to circulate with each other.

[0031] The breathable heating plate 10 includes a cylinder 101, the inner wall of the first shell 1 and the side of the catalyst carrier 11 are fixedly connected to the surface of the cylinder 101, and the front and rear sides of the cylinder 101 are provided with a first air hole 102, and the center of the first air hole 102 is on the same horizontal line as the center of the second air hole 12. The cylinder 101 and the hollow cylinder 3 are interconnected through the first air hole 102 and the second air hole 12. When hot air enters the cylinder 101, the catalyst carrier 11 is heated by the hot air in the cylinder 101. A circular plate 103 is fixedly connected to the inner wall of the cylinder 101, and a circular hole 104 is opened inside the circular plate 103. A circular tube 105 is fixedly connected to the inner wall of the circular hole 104, and the air around the breathable heating plate 10 can circulate through the circular tube 105.

[0032] Embodiment 2:

[0033] Reference Figure 1-10 A ring 13 is fitted on the surface of the first shell 1, a flange 14 is fixedly connected to the surface of the ring 13, a positioning block 15 is fixedly connected to the surface of the first shell 1, a positioning groove 16 is provided on the inner wall of the ring 13, the inner wall of the positioning groove 16 contacts the surface of the positioning block 15, a groove 17 is provided on the inner wall of the ring 13, and the shape of the longitudinal section of the groove 17 is the same as the shape of the longitudinal section of the positioning block 15.

[0034] When the positioning block 15 contacts the positioning groove 16, the flange 14 cannot rotate on the first shell 1 through the cooperation of the positioning block 15 and the positioning groove 16, and the first shell 1 can be fixed on the exhaust pipe through the cooperation of the flange 14, bolts and nuts. When the positioning block 15 is aligned with the groove 17, the flange 14 can be directly removed from the first shell 1, and then through the cooperation of the ring 13, the flange 14, the positioning block 15, the positioning groove 16 and the groove 17, the flange 14 and the first shell 1 are convenient to disassemble and assemble, so that it is convenient for the user to replace the flange 14 on the catalyst as needed.

[0035] In the utility model, when the motor coolant is used to heat the catalyst carrier 11 in the catalyst, the high-temperature coolant flows out from the liquid outlet of the motor and flows in the spiral tube 9. At this time, the air in the second shell 2 can be heated by the high-temperature coolant in the spiral tube 9. At the same time, by turning on the fan 4, the hot air in the second shell 2 can enter the cylinder 101 through the first air hole 102 and the second air hole 12. Then, the catalyst carrier 11 is heated simultaneously by the hot air in the breathable heating plate 10 and the second shell 2.

[0036] When the electric heating tube 5 is used to heat the catalyst carrier 11 in the catalyst, the fan 4 is first turned on to allow the air in the cylinder 101, the hollow cylinder 3 and the second shell 2 to circulate, and then the heat generated by the electric heating tube 5 when it is working can generate hot air in the cylinder 101, the hollow cylinder 3 and the second shell 2, and the catalyst carrier 11 is heated simultaneously by the hot air in the breathable heating plate 10 and the second shell 2.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A catalyst for a hybrid vehicle, comprising a first housing (1), characterized in that: The surface of the first shell (1) is fixedly connected to the second shell (2); the inner wall of the second shell (2) and the front and rear sides of the first shell (1) are fixedly connected to a hollow cylinder (3); the inner wall of the hollow cylinder (3) is fixedly connected to a fan (4); the inner wall of the hollow cylinder (3) is fixedly connected to an electric heating pipe (5); an air groove (6) is provided on the side of the hollow cylinder (3) away from the first shell (1); the upper and lower sides of the hollow cylinder (3) are both provided with a first through hole (7); the upper surface of the second shell (2) is provided with a second through hole (8); the inner wall of the first through hole (7) and the inner wall of the second through hole (8) are both fixedly connected to a spiral tube (9); the inner wall of the first shell (1) is fixedly connected to a breathable heating plate (10); the left and right sides of the breathable heating plate (10) and the inner wall of the first shell (1) are both fixedly connected to a catalyst carrier (11); the front and rear sides of the first shell (1) are both provided with a second air hole (12).

2. A catalyst for a hybrid vehicle according to claim 1, characterized in that: The electric heating tube (5) is located between the spiral tube (9) and the fan (4), and the fan (4) is located between the air groove (6) and the electric heating tube (5).

3. The catalyst for a hybrid vehicle according to claim 1, characterized in that: The breathable heating plate (10) comprises a cylinder (101), the inner wall of the first shell (1) and the side surface of the catalyst carrier (11) are fixedly connected to the surface of the cylinder (101), the front and rear sides of the cylinder (101) are provided with first air holes (102), the inner wall of the cylinder (101) is fixedly connected to a circular plate (103), the interior of the circular plate (103) is provided with a circular hole (104), and the inner wall of the circular hole (104) is fixedly connected to a circular tube (105).

4. A catalyst for a hybrid vehicle according to claim 3, characterized in that: The center of the first air hole (102) and the center of the second air hole (12) are on the same horizontal line.

5. The catalyst for a hybrid vehicle according to claim 1, characterized in that: A circular ring (13) is fitted on the surface of the first shell (1), a flange (14) is fixedly connected to the surface of the circular ring (13), a positioning block (15) is fixedly connected to the surface of the first shell (1), a positioning groove (16) is provided on the inner wall of the circular ring (13), the inner wall of the positioning groove (16) is in contact with the surface of the positioning block (15), and a groove (17) is provided on the inner wall of the circular ring (13).

6. A catalyst for a hybrid vehicle according to claim 5, characterized in that: The shape of the longitudinal section of the groove (17) is the same as the shape of the longitudinal section of the positioning block (15).

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