CN221023538U - Heat shield, power system and car - Google Patents

Abstract

The application relates to a heat shield, a power system and an automobile, wherein the heat shield comprises a first plate body, the middle part of the first plate body is provided with a mounting part, a diversion space recessed in the mounting part is arranged along the circumferential direction of the mounting part, and the diversion space is arranged opposite to a heat source; the folded plate protruding from the diversion space is arranged along the circumference of the diversion space, and the folded plate is provided with a diversion curved surface extending towards the outside of the diversion space. According to the application, the distance between the inner wall of the diversion space and the heat source is increased through the concave diversion space, so that the heat exchange time of the hot air flow and the air can be increased, the initial heat radiation temperature of the hot air flow when the hot air flow contacts with the inner wall of the diversion space can be reduced, and the local overheating phenomenon of the first plate body in the area firstly contacted with the hot air flow is avoided; the heat radiation range of the heat source can be reduced through the diversion space, then the hot air flow can be rapidly dispersed to the periphery of the diversion space through the diversion curved surface, the heat emission of the hot air flow can be accelerated, and the condition that the first plate body is invalid due to local overheating is avoided.

Description

Heat shield, power system and car

Technical Field

The application relates to the technical field of automobile accessories, in particular to a heat shield, a power system and an automobile.

Background

In the precursor automobile, the driving shaft is a shaft for realizing connection of a power system transmission and driving wheels, and can be used for transmitting power of an engine, when power system parts are arranged, the driving shaft, the ball cage, the dust cover and other parts are positioned below a three-way catalyst outlet tail pipe of the engine, and because the temperature of the three-way catalyst outlet tail pipe is higher, the three-way catalyst outlet tail pipe continuously radiates at high temperature to the driving shaft and other parts in the running process of the engine, when the temperature of the heat radiation exceeds the temperature-resistant limit of materials, the driving shaft, the ball cage, the dust cover and other parts are easy to damage and fail, and therefore, the driving shaft and other parts are required to be protected by installing a heat shield in the power system.

The heat shield in the prior art generally comprises a platy heat shield body, has no diversion effect on hot air exhausted by the tail pipe of the three-way catalyst, cannot achieve the effect of rapidly dispersing the hot air, and easily causes the situation that the heat shield body is locally overheated (the area which is arranged opposite to the tail pipe of the three-way catalyst on the heat shield body), thereby causing the heat shield body to locally fail due to high temperature.

Disclosure of utility model

One of the purposes of the application is to provide a heat shield to solve the problem that the heat shield body is easy to fail due to local overheat in the prior art; the second purpose is to provide a power system; and a third object is to provide an automobile.

In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

A heat shield, comprising

The heat source comprises a first plate body, a second plate body and a heat source, wherein the middle part of the first plate body is provided with an installation part, a diversion space recessed in the installation part is arranged along the circumferential direction of the installation part, and the diversion space is used for being arranged opposite to the heat source; the folded plate protruding from the diversion space is arranged along the circumference of the diversion space, and the folded plate is provided with a diversion curved surface extending towards the outside of the diversion space.

According to the technical means, as the recessed diversion space increases the distance between the inner wall of the diversion space and the heat source, the hot air flows and exchanges heat with the air after being discharged from the outlet tail pipe, and the distance between the inner wall of the diversion space and the heat source is increased, so that the heat exchange time between the hot air flows and the air can be increased, the initial heat radiation temperature of the hot air flows when the hot air flows and the inner wall of the diversion space are contacted can be reduced, and the local overheating phenomenon of the first area of the first plate body, which is contacted with the hot air flows, is avoided; the folded plate protruding from the diversion space is arranged along the circumference of the diversion space, and the folded plate is provided with the diversion curved surface extending towards the outside of the diversion space, so that the periphery of the diversion space is lotus leaf-shaped, the hot air flows are discharged and then are briefly collected in the diversion space, the heat radiation range of a heat source can be reduced, then the hot air flows can be rapidly diffused to the periphery of the diversion space through the diversion curved surface, heat exchange is carried out between the hot air flows and the diversion curved surface in the diffusion process, the heat dissipation of the hot air flows can be accelerated, and the condition that the first plate body fails due to local overheating is avoided.

Further, the first plate body is further provided with a first reinforcing rib structure, the first reinforcing rib structure is provided with a diversion trench which is concave in the diversion curved surface, and the diversion trench is communicated with the diversion space.

According to the technical means, as the first reinforcing rib structure is provided with the diversion trench communicated with the diversion space, hot air flow in the diversion space can be dispersed along the diversion trench, and meanwhile, the heat exchange area of the diversion trench when heat is dispersed can be increased through the inner wall of the diversion trench, so that the heat dissipation efficiency of the first plate body is improved.

Further, the first reinforcing rib structure includes a first reinforcing rib and a second reinforcing rib extending in a first direction, and the mounting portion is connected between the first reinforcing rib and the second reinforcing rib.

According to the above technical means, the mounting portion having a relatively high strength is made a part of the first reinforcing rib structure, and the overall structural strength of the first reinforcing rib structure is increased by the mounting portion.

Further, the first reinforcing rib structure further comprises a third reinforcing rib and a fourth reinforcing rib which extend along the second direction, and the first reinforcing rib, the second reinforcing rib, the third reinforcing rib and the fourth reinforcing rib are arranged on the first plate body in an X shape.

According to the technical means, the diagonal line area of the first plate body is structurally reinforced through the first reinforcing rib structure, so that the overall structural strength and rigidity of the first plate body are improved.

Further, the heat shield also comprises a second plate body integrally formed with the first plate body.

According to the technical means, the heat shield body is formed by the first plate body and the second plate body together, so that the heat insulation range of the heat shield is enlarged, and the heat insulation effect on the parts such as the driving shaft, the ball cage and the dust shield is improved.

Further, the second plate body comprises an arc plate body, and the arc plate body is in transitional connection with a folded plate at one side of the diversion space through a curved surface.

According to the technical means, the arc-shaped plate body is circumferentially arranged along the periphery of the driving shaft, hot air flows are diffused along the arc-shaped plate body at one side far away from the driving shaft, and the influence of high-temperature heat radiation on the driving shaft is reduced.

Further, the arc plate body is provided with a second reinforcing rib structure, and the second reinforcing rib structure is connected with the first reinforcing rib structure.

According to the technical means, the first reinforcing rib structure and the second reinforcing rib structure are integrated, so that the strength and the rigidity of the whole structure of the heat shield body are improved.

Further, the second stiffener structure includes a fifth stiffener extending along the first direction or the second direction and connected to the first stiffener structure.

According to the technical means, the force transmission direction in the second reinforcing rib structure can be kept consistent with that of the first reinforcing rib structure as much as possible.

The utility model provides a driving system, includes foretell heat exchanger, still includes three way catalyst converter and drive shaft, the heat exchanger set up in between three way catalyst converter and the drive shaft, the installation department with three way catalyst converter is connected, the water conservancy diversion space orientation three way catalyst converter sets up.

According to the technical means, the flow guiding space is arranged towards the outlet tail pipe of the three-way catalyst, so that after the hot air exhausted by the outlet tail pipe of the three-way catalyst enters the flow guiding space, the hot air is diffused to the periphery of the flow guiding space through the flow guiding groove and the flow guiding curved surface, the heat exchanging area is increased through the first reinforcing rib structure and the second reinforcing rib structure, the heat radiation temperature is efficiently and quickly reduced, the heat radiation efficiency is improved, the heat radiation range and the heat radiation temperature of the three-way catalyst are reduced, and the service life influence of the heat radiation on parts such as a driving shaft is reduced.

An automobile comprises the power system.

The application has the beneficial effects that:

(1) According to the application, the concave diversion space is arranged on the first plate body, the heat exchange time of the hot air flow and the air can be increased by increasing the distance between the inner wall of the diversion space and the heat source, and the initial heat radiation temperature of the hot air flow when the hot air flow contacts with the inner wall of the diversion space can be reduced; the folded plate with the diversion curved surface is arranged in the circumferential direction of the diversion space, so that the hot air flow can be rapidly dispersed to the periphery of the diversion space through the diversion curved surface, and heat exchange is carried out between the hot air flow and the diversion curved surface in the dispersion process, thereby accelerating the heat dispersion of the hot air flow and avoiding the failure of the first plate body due to local overheating.

(2) According to the application, the first reinforcing rib structure and the second reinforcing rib structure are arranged on the first plate body and the second plate body, so that the rigidity of the heat shield body can be improved, the heat shield is prevented from deforming in the use process, and cracking when the heat shield and the engine resonate is avoided.

(3) According to the heat-exchange heat-conducting cover, the heat-exchange area on the heat-insulating cover body is increased through the inner walls of the plurality of reinforcing ribs, the rapid flow guiding effect on hot air flow is realized through the flow guiding grooves in the reinforcing ribs, and the heat-radiating function of the heat-insulating cover can be realized more rapidly and more efficiently.

Drawings

Fig. 1 is a schematic structural view of a heat shield according to an embodiment of the present application;

FIG. 2 is a view from direction A of FIG. 1 provided in an embodiment of the present application;

FIG. 3 is a schematic diagram of an embodiment of the present application for providing a first stiffener structure and a second stiffener structure;

Fig. 4 is a schematic connection diagram of a first board body and a second board body according to an embodiment of the present application;

Fig. 5 is a schematic structural diagram of a power system according to an embodiment of the present application.

Wherein, 1-a first plate body; 11-an installation part; 111-a first mounting hole; 12-folded plate; 121-a diversion curved surface; 122-a first flap; 123-a second flap; 124-a third flap; 125-fourth flap; 13-a first stiffener structure; 131-diversion trenches; 132-first reinforcing bars; 133-a second stiffener; 134-third reinforcing ribs; 135-fourth reinforcing ribs; 136-sixth reinforcing ribs; 2-a second plate; 21-an arcuate plate body; 22-a second reinforcing rib structure; 221-fifth reinforcing ribs; 222-seventh reinforcing bars; 23-connecting part; 231-a second mounting hole; 3-three-way catalyst; 4-driving shaft; 5-engine block.

Detailed Description

Further advantages and effects of the present application will become readily apparent to those skilled in the art from the disclosure herein, by referring to the accompanying drawings and the preferred embodiments. The application may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present application. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present application by way of illustration, and only the components related to the present application are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The embodiment of the application provides a heat shield, referring to fig. 1 to 5, which comprises a first plate body 1, wherein the middle part of the first plate body 1 is provided with a mounting part 11, the mounting part 11 is provided with a first mounting hole 111 for connecting with a heat source, and the heat source is specifically an outlet tail pipe on a three-way catalyst 3; the circumference of the installation part 11 is provided with a diversion space recessed in the installation part 11, the diversion space is arranged opposite to the heat source, the distance between the inner wall of the diversion space and the heat source can be increased, after the hot air is discharged from the outlet tail pipe, the hot air can exchange heat with the air, the distance between the inner wall of the diversion space and the heat source can be increased, the heat exchange time between the hot air and the air can be prolonged, the initial heat radiation temperature of the hot air when the hot air contacts with the inner wall of the diversion space can be reduced, and the local overheating phenomenon of the area of the first plate body 1 firstly contacted with the hot air is avoided; the folded plate 12 protruding from the diversion space is arranged along the circumference of the diversion space, the folded plate 12 is provided with the diversion curved surface 121 extending towards the outside of the diversion space, the periphery of the diversion space is lotus leaf-shaped, hot air flows are discharged and then are collected in the diversion space for a short time, the heat radiation range of a heat source can be reduced, then the hot air flows can be rapidly diffused to the periphery of the diversion space through the diversion curved surface 121, heat exchange is carried out between the hot air flows and the diversion curved surface 121 in the diffusion process, the heat dissipation of the hot air flows can be accelerated, and the condition that the first plate body 1 fails due to local overheating is avoided.

It should be noted that, the inner wall of the flow guiding space is integrally connected with the mounting portion 11, the shape of the flow guiding space can be designed according to the arrangement requirement of the power space, preferably, the inner wall surface of the flow guiding space is a curved surface, and the inner wall surface of the flow guiding space is in transitional connection with the flow guiding curved surface 121 through the curved surface, so that the flow guiding effect on the hot air flow can be further enhanced.

As a preferred embodiment of the present application, referring to fig. 1, the flow guiding space is in a bowl-shaped structure, the mounting portion 11 is convexly arranged at the center of the bowl-shaped structure, and rounded corners are formed around the mounting portion 11, so that stress concentration phenomenon can be reduced; in order to improve the structural strength of the mounting portion 11, the thickness of the plate body at the mounting portion 11 is thicker.

In some embodiments of the present application, referring to fig. 1 and 2, the folded plate 12 includes a first folded plate 122, a second folded plate 123, a third folded plate 124 and a fourth folded plate 125 disposed along the periphery of the diversion space, and the first folded plate 122, the second folded plate 123, the third folded plate 124 and the fourth folded plate 125 are all in transitional connection with the inner wall surface of the diversion space through the diversion curved surface 121, and the adjacent folded plates 12 are also in transitional connection through curved surfaces.

It should be noted that, the shapes, sizes and thicknesses of the first flap 122, the second flap 123, the third flap 124 and the fourth flap 125 are determined according to the space arrangement requirement of the heat shield, and in some embodiments of the present application, the main body of the first panel body 1 and the flap 12 are manufactured by an integral molding process, and the thicknesses of the first flap 122, the second flap 123, the third flap 124 and the fourth flap 125 are the same as the thickness of the main body of the first panel body 1, preferably 1mm, so as to reduce the overall weight of the heat shield as much as possible while satisfying the heat insulation requirement.

In a preferred embodiment of the present application, the dimension of the flap 12 extending toward the outside of the diversion space is defined as the width of the flap 12, the angle formed by the connection between the inner wall surface of the diversion space and the flap 12 is defined as a bending angle, the bending angle between the first flap 122 and the inner wall surface of the diversion space is about 137 °, the width of the first flap 122 is about 40mm, the bending angle between the second flap 123 and the inner wall surface of the diversion space is about 115 °, the width of the second flap 123 is about 34mm, the bending angle between the third flap 124 and the inner wall surface of the diversion space is about 159 °, and the width of the third flap 124 is about 34mm.

Because the heat shield is of a plate-shaped structure with larger area and thinner thickness, if the rigidity of the heat shield is insufficient in the use process, the heat shield is easy to deform; if the structural strength and rigidity of the heat shield are weak, when the heat shield frequency resonates with the engine frequency, the heat shield is prone to cracking due to resonance.

In order to solve the above-mentioned problems, in some embodiments of the present application, the first plate body 1 further has a first reinforcing rib structure 13, which can be used to increase the rigidity of the heat insulation cover plate body, so as to avoid deformation of the first plate body 1 during use; besides, the first reinforcing rib structure 13 has a guiding groove 131 recessed in the guiding curved surface 121, and the guiding groove 131 is communicated with the guiding space, so that the hot air flow in the guiding space can be dispersed along the guiding groove 131, and meanwhile, the heat exchange area of the heat dispersion can be increased through the inner wall of the guiding groove 131, so that the heat dissipation efficiency of the first plate body 1 is improved.

To further enhance the overall structural strength of the first stiffener structure 13, referring to fig. 3, in some embodiments of the present application, the first stiffener structure 13 includes a first stiffener 132 and a second stiffener 133 extending along a first direction, and the mounting portion 11 is connected between the first stiffener 132 and the second stiffener 133. Since the mounting portion 11 has a large thickness in the first plate body 1 and a large structural strength, the mounting portion 11 is connected between the first reinforcing rib 132 and the second reinforcing rib 133, and the mounting portion 11 is made part of the first reinforcing rib structure 13, so that the overall structural strength of the first reinforcing rib structure 13 is increased by the mounting portion 11.

In order to further increase the overall structural strength and rigidity of the first plate body 1 through the first reinforcing rib structure 13, please refer to fig. 3, in some embodiments of the present application, the first reinforcing rib structure 13 further includes a third reinforcing rib 134 and a fourth reinforcing rib 135 extending along the second direction, the first reinforcing rib 132, the second reinforcing rib 133, the third reinforcing rib 134 and the fourth reinforcing rib 135 are disposed on the first plate body 1 in an X-shape, and the diagonal area of the first plate body 1 is structurally reinforced through the first reinforcing rib structure 13, thereby increasing the overall structural strength and rigidity of the first plate body 1.

In addition to the aforementioned reinforcing ribs, the first reinforcing rib structure 13 further includes a sixth reinforcing rib 136, where the sixth reinforcing rib 136 extends along the first direction or the second direction, for reinforcing other areas of the first plate body 1 where structural strength or rigidity needs to be increased, and at the same time, the heat exchange area of the first plate body 1 can be further increased by the sixth reinforcing rib 136.

As a preferred embodiment of the present application, referring to fig. 3, the sixth reinforcing rib 136 extends along the second direction and is disposed parallel to the third reinforcing rib 134 and the fourth reinforcing rib 135, and the sixth reinforcing rib 136 is located at the upper right corner of the first plate body 1, so as to structurally strengthen and guide the hot air flow in the corner area of the first plate body 1.

It should be noted that, the plurality of reinforcing ribs in the first reinforcing rib structure 13 are respectively arranged in the installation portion 11, the diversion space, the folded plate 12 and other areas, so as to avoid the situation that the first plate body 1 has insufficient local structural strength and rigidity.

In order to further increase the heat insulation area of the heat shield, in some embodiments of the present application, referring to fig. 1 and 4, the heat shield further includes a second plate 2 integrally formed with the first plate 1, and the heat shield body is formed by the first plate 1 and the second plate 2 together, so as to increase the heat insulation range of the heat shield body, thereby improving the heat insulation effect on the driving shaft 4, the ball cage, the dust shield and other components. Specifically, the heat shield body is an integrally formed single-layer special-shaped plate-shaped stamping part, and is used for being arranged in a power system to perform heat insulation protection on the driving shaft 4, the ball cage, the dust shield and other parts, as shown in fig. 5.

In order to avoid heat radiation to the driving shaft 4 caused by the hot air flow emitted from the diversion space, in some embodiments of the present application, the second plate body 2 includes an arc plate body 21, the arc plate body 21 is circumferentially disposed along the periphery of the driving shaft 4 to separate the driving shaft 4 from the hot air flow, the arc plate body 21 is in curved transitional connection with the folded plate 12 on one side of the diversion space, specifically, the arc plate body 21 is in curved transitional connection with the fourth folded plate 125, the bending angle between the fourth folded plate 125 and the diversion space and the angle between the arc plate body 21 and the fourth folded plate 125 are adjusted according to the layout requirement of the heat shield body, so that the hot air flow diffuses along the arc plate body 21 on one side far away from the driving shaft 4, and the influence of the hot air radiation on the driving shaft 4 is reduced.

Accordingly, in order to improve the structural strength and rigidity of the second plate body 2, in some embodiments of the present application, referring to fig. 3, the arcuate plate body 21 has a second reinforcing rib structure 22 thereon, and the second reinforcing rib structure 22 is connected to the first reinforcing rib structure 13, so that the first reinforcing rib structure 13 and the second reinforcing rib structure 22 are integrated into a whole, thereby improving the overall structural strength and rigidity of the heat shield body according to the present application. It should be noted that, the first reinforcing rib structure 13 and the second reinforcing rib structure 22 are both protruding towards the side where the driving shaft 4 is located, so that a concave diversion trench 131 is formed on the side facing the three-way catalyst 3, so as to facilitate diversion and dispersion of the hot air flow.

In order to ensure that the direction of force transfer in the second bead structure 22 is as consistent as possible with the first bead structure 13, in some embodiments of the application the second bead structure 22 comprises a fifth bead 221, the fifth bead 221 extending in the first direction or in the second direction and being connected to at least one of the first bead structures 13.

As a preferred embodiment of the present application, the fifth reinforcing rib 221 extends in the second direction, the fifth reinforcing rib 221 is disposed in parallel with the third reinforcing rib 134 and the fourth reinforcing rib 135, and at the same time, the fifth reinforcing rib 221 is cross-connected with the first reinforcing rib 132, and in order to reduce the stress concentration phenomenon at the cross-connection of the fifth reinforcing rib 221 and the first reinforcing rib 132, a rounded corner connection is used at the cross-connection of the fifth reinforcing rib 221 and the first reinforcing rib 132.

In some embodiments of the present application, the second stiffener structure 22 further includes a seventh stiffener 222, where the seventh stiffener 222 is connected to the fifth stiffener 221 in a V-shape, and a first end of the seventh stiffener 222 extends to the second mounting hole 231 of the connecting portion 23, and forms an angle with the connecting portion 23 of about 45 °, and a second end of the seventh stiffener 222 extends to the first plate 1 and is cross-connected with the fourth stiffener 135 and the sixth stiffener 136 in the first stiffener structure 13, so as to further increase the heat exchange area on the first plate 1 and the second plate 2. Specifically, the seventh stiffener 222 and the second stiffener 133 form an angle of about 33 °.

It should be noted that, the present application can raise the structural rigidity of the whole heat shield body through the first reinforcing rib structure 13 and the second reinforcing rib structure 22, change the structural characteristics of the heat shield, and avoid the occurrence of resonance between the frequency of the heat shield and the frequency of the engine, which results in cracking of the heat shield body. The arrangement, shape and size of the reinforcing ribs in the first reinforcing rib structure 13 and the second reinforcing rib structure 22 can be determined by CAE stress analysis.

To achieve the connection between the heat shield and the engine block 5, in some embodiments of the application, the second plate body 2 further comprises a connection portion 23, the connection portion 23 having a second mounting hole 231 for connection with the engine block 5. Specifically, the connecting portion 23 is a flat plate body, the connecting portion 23 is bent towards the side where the driving shaft 4 is located relative to the arc plate body 21, and the connecting portion 23 is connected with the side of the arc plate body 21 through a curved surface in a transitional manner, so that the shape of the second plate body 2 is similar to that of the driving shaft 4, and the periphery of the driving shaft 4 can be effectively protected. The connecting portion 23 is provided with two second mounting holes 231, one of which is a bar-shaped hole and the other of which is a positioning hole, so that the assembly between the connecting portion 23 and the engine block 5 is facilitated.

The embodiment of the application also provides a power system, referring to fig. 5, which comprises the heat shield described in the above embodiment, and further comprises a three-way catalyst 3, a driving shaft 4 and an engine cylinder 5, wherein the heat shield is arranged between the three-way catalyst 3 and the driving shaft 4, the installation part 11 is connected with the three-way catalyst 3, the diversion space is arranged towards the outlet tail pipe of the three-way catalyst 3, so that the hot air flow discharged from the outlet tail pipe of the three-way catalyst 3 enters the diversion space, and diverges towards the periphery of the diversion space through the diversion trench 131 and the diversion curved surface 121, the heat exchange area is increased through the first reinforcing rib structure 13 and the second reinforcing rib structure 22, the heat radiation temperature is efficiently and rapidly reduced, the heat radiation efficiency is improved, the heat radiation range and the heat radiation temperature of the three-way catalyst 3 are reduced, and the service life influence of the heat radiation on the driving shaft 4 and other parts is reduced.

The embodiment of the application also provides an automobile, which comprises the power system. As a preferred embodiment of the application, the automobile is a precursor automobile, and the heat shield can be applied to a power system of the precursor automobile, so that the heat shield can effectively insulate and protect parts such as a driving shaft in the power system, reduce the influence of heat radiation on the driving shaft and improve the service performance of the automobile.

In some embodiments of the present application, referring to fig. 1 to 5, the heat shield works as follows:

step one: connecting the mounting part 11 of the first plate body 1 in the heat shield to the three-way catalyst 3, and connecting the connecting part 23 of the second plate body 2 to the engine block 5, so that the heat shield body is positioned between the outlet tail pipe of the three-way catalyst 3 and the driving shaft 4;

Step two: in the running process of a power system of an automobile, hot air flows are discharged from an outlet tail pipe of the three-way catalyst 3 and enter a diversion space, then the hot air flows in the diversion space are dispersed along the diversion curved surface 121 and the diversion groove 131 towards the periphery of the diversion space, the phenomenon that local overheating occurs on a heat shield body is avoided, in the dispersing process, the hot air flows exchange heat with the first plate body 1 and the second plate body 2, and the first reinforcing rib structure 13 and the second reinforcing rib structure 22 can also increase the heat exchange area of the hot air flows while improving the rigidity of the heat shield body, and the heat dissipation efficiency of the heat shield body can also be improved while avoiding the heat shield body from cracking due to resonance.

According to the application, the distance between the inner wall of the diversion space and the heat source can be increased by arranging the diversion space recessed in the installation part 11 on the heat shield, the hot air flows and air can exchange heat after being discharged from the outlet tail pipe, the distance between the inner wall of the diversion space and the heat source can be increased, the initial heat radiation temperature of the hot air flows when contacting with the inner wall of the diversion space can be reduced, the hot air flows are temporarily collected in the diversion space, the heat radiation range of the heat source can be reduced, then the hot air flows can be rapidly diffused to the periphery of the diversion space through the diversion curved surface 121 and the diversion groove 131, the heat radiation of the hot air flows can be accelerated, the situation that the first plate body 1 fails due to local overheating is avoided, the rigidity of the heat shield body is improved through the first reinforcing rib structure 13 and the second reinforcing rib structure 22, the cracking caused by resonance of the heat shield and the engine can be avoided, the heat exchange area on the heat shield body is increased through the plurality of reinforcing rib inner walls, and the heat radiation temperature on the heat shield body is accelerated, so that the heat radiation temperature on the heat shield body is effectively and rapidly reduced.

The above embodiments are merely preferred embodiments for fully explaining the present application, and the scope of the present application is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present application, and are intended to be within the scope of the present application.

Claims (10)

1. A heat shield, comprising:

The solar panel comprises a first panel body (1), wherein an installation part (11) is arranged in the middle of the first panel body (1), a diversion space recessed in the installation part (11) is arranged along the circumferential direction of the installation part (11), the diversion space is arranged opposite to a heat source, a folded plate (12) protruding out of the diversion space is arranged along the circumferential direction of the diversion space, and a diversion curved surface (121) extending outwards of the diversion space is arranged on the folded plate (12).

2. The heat shield of claim 1, wherein: the first plate body (1) is further provided with a first reinforcing rib structure (13), the first reinforcing rib structure (13) is provided with a diversion trench (131) which is concave in the diversion curved surface (121), and the diversion trench (131) is communicated with the diversion space.

3. The heat shield of claim 2, wherein: the first reinforcing rib structure (13) comprises a first reinforcing rib (132) and a second reinforcing rib (133) extending along a first direction, and the mounting portion (11) is connected between the first reinforcing rib (132) and the second reinforcing rib (133).

4. A heat shield according to claim 3, wherein: the first reinforcing rib structure (13) further comprises a third reinforcing rib (134) and a fourth reinforcing rib (135) which extend along the second direction, and the first reinforcing rib (132), the second reinforcing rib (133), the third reinforcing rib (134) and the fourth reinforcing rib (135) are arranged on the first plate body (1) in an X shape.

5. The heat shield according to claim 4, further comprising a second plate (2) integrally formed with the first plate (1).

6. The heat shield according to claim 5, wherein the second plate body (2) comprises an arc-shaped plate body (21), and the arc-shaped plate body (21) is in transitional connection with the folded plate (12) at one side of the diversion space through a curved surface.

7. A heat shield according to claim 6, wherein the arcuate plate body (21) has a second stiffener formation (22) thereon, the second stiffener formation (22) being connected to the first stiffener formation (13).

8. A heat shield according to claim 7, wherein the second stiffener structure (22) comprises a fifth stiffener (221), the fifth stiffener (221) extending in the first direction or the second direction and being connected to the first stiffener structure (13).

9. A power system, characterized by comprising a heat shield according to any one of claims 1 to 8, further comprising a three-way catalyst (3) and a drive shaft (4), the heat shield being arranged between the three-way catalyst (3) and the drive shaft (4), the mounting portion (11) being connected with the three-way catalyst (3), the flow guiding space being arranged towards the three-way catalyst (3).

10. An automobile comprising the power system of claim 9.