Heat exchange structure of exhaust pipeline and air conditioning system and automobile

Abstract

The utility model discloses a heat exchange structure of an exhaust pipeline and an air conditioning system and an automobile, the heat exchange structure is respectively connected with an exhaust front section pipeline and an exhaust tail section pipeline through an exhaust heat exchange pipeline arranged in a doorsill beam, so that the exhaust pipeline is integrated in the doorsill beam, the space at the bottom of the automobile is reasonably utilized, and the heat exchange efficiency is improved. And the exhaust pipe is prevented from occupying the bottom tiling space of the battery when being arranged in the middle. Moreover, a heat exchange air duct is further arranged in the doorsill beam and communicates with a cooling air duct of the air conditioning system, a fluid medium in the heat exchange air duct can exchange heat with exhaust gas in the exhaust heat exchange pipeline, heat of the exhaust gas in the exhaust heat exchange pipeline is utilized for heating, and the energy utilization rate of the automobile is increased; and moreover, flowing gas in the air conditioning system can take away heat of the exhaust pipeline, and on the premise that it is guaranteed that the exhaust pipeline is integrated in the threshold beam, and the automobile space utilization rate is increased, the heat damage problem caused by the exhaust heat exchange pipeline to the threshold beam is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts, in particular to a heat exchange structure between an exhaust pipe and an air conditioning system, and the heat exchange structure can be used for an automobile. Background Art

[0002] With the increasing demand for pure electric long-range driving of traditional plug-in hybrid and range-extended electric vehicles, a power battery with a larger power is required to meet the long-range driving demand. The battery and the exhaust pipe are usually arranged under the vehicle body floor. Due to considering the heat damage space of the exhaust pipe, a large heat insulation space needs to be left between the automotive power battery and the exhaust pipe, and a battery heat insulation cover is added. The installation space of the power battery is restricted by the exhaust pipe, and the volume of the battery cannot be increased. On the other hand, the traditional body sill cavity is large and not fully utilized. Considering improving the space layout efficiency, reducing costs, and increasing the battery capacity to increase the endurance, it is necessary to utilize the sill cavity in the vehicle body structure.

[0003] For example, a Chinese patent (publication number: CN219838615U) discloses a lower vehicle body structure and a vehicle. The lower vehicle body structure includes a sill assembly and an exhaust pipe assembly; the sill assembly is provided with a receiving space extending in the vehicle front-rear direction; the exhaust pipe assembly is connected to the sill assembly, and at least part of the exhaust pipe assembly is arranged in the receiving space and extends in the vehicle front-rear direction. Integrating at least part of the exhaust pipe assembly into the sill assembly reduces the Y-direction space required for installing the exhaust pipe assembly and the sill assembly on the vehicle body. Thus, while ensuring the vehicle side collision performance is met, an installation space is reserved for the Y-direction expansion of the battery pack, enabling the installation of a battery pack with a larger Y-direction dimension.

[0004] It can be seen that this kind of lower vehicle body structure sets the exhaust gas in the sill, which can effectively utilize the space at the bottom of the vehicle and avoid occupying the bottom flat-laying space of the battery when the exhaust pipe is arranged in the middle. However, in order to prevent the heat of the exhaust pipe from affecting the sill, the exhaust pipe is cooled by a cooling pipe sleeved outside the exhaust pipe, thereby reducing the temperature of the outer surface of the sill assembly. As a result, the heat energy carried by the exhaust gas in the exhaust pipe is directly absorbed by the cooling water, and the waste heat in the waste water cannot be reasonably utilized, reducing the energy utilization rate of the vehicle. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the technical problem in the prior art that when the exhaust pipe is integrated into the sill and the exhaust pipe is cooled by a cooling pipe sleeved outside the exhaust pipe, the temperature of the outer surface of the sill assembly is reduced, resulting in the heat energy carried by the exhaust gas in the exhaust pipe being directly absorbed by the cooling water, and the waste heat in the waste water cannot be reasonably utilized, reducing the energy utilization rate of the vehicle.

[0006] In order to solve the above technical problems, an embodiment of the utility model discloses a heat exchange structure of an exhaust pipeline and an air-conditioning system, including an exhaust front-end pipeline connected to the exhaust port of the engine, a door sill beam and an exhaust tail-end pipeline, an exhaust heat exchange pipeline extending along the length direction of the automobile is formed in the door sill beam, one end of the exhaust heat exchange pipeline is connected to the exhaust front-end pipeline, and the other end is connected to the exhaust tail-end pipeline.

[0007] In addition, the air conditioning system has a cooling air duct. A heat exchange air duct extending along the length direction of the vehicle is formed in the door sill at the periphery of the exhaust heat exchange pipeline. The heat exchange air duct is connected to the cooling air duct of the air conditioning system. The fluid medium in the heat exchange air duct exchanges heat with the exhaust gas in the exhaust heat exchange pipeline.

[0008] By adopting the above technical scheme, the heat exchange structure of the exhaust pipe and the air conditioning system is connected to the exhaust front pipe and the exhaust tail pipe respectively through the exhaust heat exchange pipe arranged in the door sill beam, so that the exhaust pipe is integrated in the door sill beam, and the space at the bottom of the vehicle is reasonably utilized to avoid occupying the bottom flat space of the battery when the exhaust pipe is arranged in the center. In addition, a heat exchange air duct is also arranged in the door sill beam, and the heat exchange air duct is connected to the cooling air duct of the air conditioning system, and the fluid medium in the heat exchange air duct can exchange heat with the exhaust gas in the exhaust heat exchange pipe. When the car has a heating demand, the heat energy carried by the exhaust gas in the exhaust heat exchange pipe can be absorbed through the heat exchange air duct, thereby reducing the workload of the air conditioning system and improving the energy utilization rate of the vehicle; when the car has no heating demand, the air conditioning system can blow natural wind into the heat exchange air duct through the cooling air duct, and the heat energy carried by the exhaust gas in the exhaust heat exchange pipe can be taken out of the door sill through the flowing car, and discharged outside the car, reducing the heat damage caused by the exhaust heat exchange pipe to the door sill beam itself, and ensuring a good working environment for the door sill beam.

[0009] Therefore, this heat exchange structure of the exhaust pipe and the air-conditioning system cleverly combines the exhaust pipe and the air-conditioning system in the door sill beam. On the one hand, the heat of the exhaust gas in the exhaust pipe is used for heating, thereby improving the energy utilization rate of the car; on the other hand, the heat of the exhaust pipe is taken away by the flowing gas in the air-conditioning system, thereby reducing the heat damage caused by the exhaust heat exchange pipe to the door sill beam itself.

[0010] The embodiment of the utility model further discloses a heat exchange structure of an exhaust pipe and an air conditioning system, wherein a plurality of reinforcing plates are arranged in the threshold beam, and the plurality of reinforcing plates are arranged in a staggered manner to divide the threshold beam into a plurality of cavities.

[0011] Among them, at least one cavity is located in the middle of the cross section of the threshold beam, forming an exhaust pipe accommodating cavity, the exhaust heat exchange pipeline and the heat exchange air duct are arranged in the exhaust pipe accommodating cavity, and the cavity located at the periphery of the exhaust pipe accommodating cavity forms an insulating cavity.

[0012] With the above technical solution, multiple reinforcing plates arranged in the sill beam can greatly enhance the structural strength of the sill beam. Also, since the exhaust pipe accommodation cavity is located in the middle of the cross-section of the sill beam, the heat insulation cavity located around the exhaust pipe accommodation cavity can reduce the heat damage effect of the exhaust pipe line. Moreover, when the sill beam is subjected to an external impact, it can also achieve buffering and energy absorption through the multiple heat insulation cavities around it, playing a protective role for the exhaust pipe accommodation cavity.

[0013] The embodiment of the utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. In the exhaust pipe accommodation cavity, a plurality of support plates are arranged at intervals along the circumferential direction of the exhaust heat exchange pipe. One side of the plurality of support plates is connected to the exhaust heat exchange pipe, and the other end is connected to the reinforcing plate that forms the exhaust pipe accommodation cavity.

[0014] With the above technical solution, the exhaust heat exchange pipe is fixed in the exhaust pipe accommodation cavity through the support plates, ensuring the assembly stability of the exhaust heat exchange pipe.

[0015] The embodiment of the utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. A cooling water pipe is also arranged on the periphery of the exhaust heat exchange pipe in the exhaust pipe accommodation cavity, and a coolant flows in the cooling water pipe.

[0016] With the above technical solution, the cooling water pipe arranged in the exhaust pipe accommodation cavity enables the exhaust pipe line not only to conduct heat exchange with the heat exchange structure of the air conditioning system, but also to absorb the heat of the exhaust gas in the exhaust pipe line through the cooling water pipe, better cooling the exhaust pipe line and preventing excessive heat of the exhaust pipe line from dissipating from the sill beam.

[0017] The embodiment of the utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. A heat insulation layer is formed on the inner wall surface of the reinforcing plate that forms the exhaust pipe accommodation cavity.

[0018] With the above technical solution, the heat insulation layer arranged on the inner wall surface of the reinforcing plate of the exhaust pipe accommodation cavity can block the heat on the exhaust pipe from dissipating out of the exhaust pipe accommodation cavity, reducing the heat damage effect of the exhaust pipe.

[0019] The embodiment of the utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. A sill temperature sensor is arranged on the outer side wall of the sill beam.

[0020] And, an exhaust pipe temperature sensor is arranged on the reinforcing plate that forms the exhaust pipe accommodation cavity.

[0021] With the above technical solution, by means of the sill temperature sensor provided on the outer side wall of the sill beam and the exhaust pipe temperature sensor on the reinforcing plate of the exhaust pipe accommodating cavity, the temperature on the sill beam and the temperature on the exhaust pipe line can be detected in real time. If the temperature on the sill beam is too high, it may be necessary to check the heat insulation components inside the sill beam. If the temperature on the exhaust pipe line is too high, it may be necessary to check whether the exhaust heat exchange pipeline is damaged, which is conducive to detecting faulty components at an early stage and then replacing them as soon as possible.

[0022] An embodiment of the present utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. An exhaust adapter is provided between the exhaust heat exchange pipeline and the front exhaust pipeline and the rear exhaust pipeline.

[0023] Moreover, an air duct adapter is provided between the cooling air duct and the heat exchange air duct of the sill beam.

[0024] With the above technical solution, by means of the exhaust adapter provided between the exhaust heat exchange pipeline and the front exhaust pipeline and the rear exhaust pipeline, and the air duct adapter between the cooling air duct and the heat exchange air duct of the sill beam, it is ensured that the exhaust gas in the exhaust pipe line and the cooling air duct of the air conditioning system can be firmly connected to the corresponding structure of the sill beam.

[0025] An embodiment of the present utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. Part of both the exhaust adapter and the air duct adapter is located inside the sill beam, and they are fixedly connected to the inner wall surface of the sill beam through vibration damping members.

[0026] With the above technical solution, by setting vibration damping members, the vibration on the sill beam is reduced from being transmitted to the exhaust adapter and the air duct adapter, thereby providing a relatively stable assembly environment for the exhaust adapter and the air duct adapter.

[0027] An embodiment of the present utility model also discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. A first sealing member is provided at the position where the exhaust adapter is connected to the exhaust heat exchange pipeline, the front exhaust pipeline or the rear exhaust pipeline.

[0028] Moreover, a second sealing member is provided at the position where the air duct adapter is connected to the cooling air duct and the heat exchange air duct.

[0029] With the above technical solution, through the first sealing member and the second sealing member, it is avoided that the exhaust gas in the exhaust pipe line and the gas in the cooling air duct of the air conditioning system leak from the adapter.

[0030] An embodiment of the present utility model also discloses a vehicle, including the heat exchange structure between an exhaust pipe line and an air conditioning system as described in any one of the above.

[0031] With the above technical solution, this vehicle utilizes the heat of the exhaust gas in the exhaust pipe line through the heat exchange structure between the exhaust pipe line and the air conditioning system for heating, improving the energy utilization rate of the vehicle; moreover, the flowing gas in the air conditioning system can take away the heat of the exhaust pipe line, reducing the heat damage problem caused by the exhaust heat exchange pipe line to the sill beam itself while ensuring that the exhaust pipe line is integrated into the sill beam and improving the space utilization rate, thereby enhancing the reliability of the vehicle.

[0032] The beneficial effects of the present utility model are as follows:

[0033] The present utility model discloses a heat exchange structure between an exhaust pipe line and an air conditioning system. Through the exhaust heat exchange pipe line arranged in the sill beam, it is respectively connected to the front exhaust pipe line and the rear exhaust pipe line, thereby integrating the exhaust pipe line into the sill beam, reasonably utilizing the space at the bottom of the vehicle, and avoiding occupying the bottom flat space of the battery when the exhaust pipe line is arranged in the middle. Moreover, a heat exchange air duct is also arranged in the sill beam. The heat exchange air duct is communicated with the cooling air duct of the air conditioning system. The fluid medium in the heat exchange air duct can conduct heat exchange with the exhaust gas in the exhaust heat exchange pipe line, utilizing the heat of the exhaust gas in the exhaust pipe line for heating, improving the energy utilization rate of the vehicle; moreover, the flowing gas in the air conditioning system can take away the heat of the exhaust pipe line, reducing the heat damage problem caused by the exhaust heat exchange pipe line to the sill beam itself while ensuring that the exhaust pipe line is integrated into the sill beam and improving the space utilization rate. Description of the Drawings

[0034] Figure 1 It is a schematic structural diagram of the exhaust pipe line arranged in the lower vehicle structure in the prior art;

[0035] Figure 2 It is a schematic structural diagram of the heat exchange structure between the trachea pipe line and the air conditioning system provided by the embodiment of the present utility model arranged in the lower vehicle structure;

[0036] Figure 3 It is a schematic structural diagram of the heat exchange structure between the trachea pipe line and the air conditioning system provided by the embodiment of the present utility model;

[0037] Figure 4 It is a schematic structural diagram of the front exhaust pipe line, the sill beam, and the rear exhaust pipe line of the heat exchange structure between the trachea pipe line and the air conditioning system provided by the embodiment of the present utility model;

[0038] Figure 5 It is a cross-sectional schematic diagram of the heat exchange structure between the trachea pipe line and the air conditioning system provided by the embodiment of the present utility model;

[0039] Figure 6 It is a cross-sectional schematic diagram of a single sill beam of the heat exchange structure between the trachea pipe line and the air conditioning system provided by the embodiment of the present utility model;

[0040] Figure 7Schematic cross-sectional view of the exhaust gas accommodating cavity of the heat exchange structure of the air pipe and the air conditioning system provided by the embodiment of the present utility model.

[0041] Description of reference numerals in the prior art:

[0042] 1. Exhaust pipe; 2. Threshold beam; 3. Power battery; 4. Exhaust muffler.

[0043] Description of reference numerals in the embodiment:

[0044] 10. Heat exchange structure of the exhaust pipe and the air conditioning system;

[0045] 100. Front section of the exhaust pipe;

[0046] 200. Threshold beam; 210. Exhaust heat exchange pipe; 220. Exhaust pipe accommodating cavity; 230. Heat insulation cavity;

[0047] 240. Cooling water pipe;

[0048] 201. Reinforcing plate; 202. Support plate; 203. Connecting plate;

[0049] 204. Threshold temperature sensor; 205. Exhaust pipe temperature sensor;

[0050] 300. Rear section of the exhaust pipe;

[0051] 400. Air conditioning system; 410. Cooling air duct; 420. Heat exchange air duct; 430. Thermal management controller;

[0052] 500. Exhaust adapter; 510. First seal;

[0053] 600. Air duct adapter; 610. Second seal;

[0054] 700. Vibration damping member;

[0055] 20. Exhaust muffler;

[0056] 30. Power battery. Specific implementation manner

[0057] As Figure 1 shown, for the layout position of the exhaust system of a hybrid / extended-range electric vehicle in the prior art, generally, the exhaust pipe 1 is arranged inside the threshold beam 2, and the exhaust gas is discharged to the outside of the vehicle through the exhaust muffler 4. Due to the heat damage effect of the exhaust pipe 1, it may cause thermal runaway of the power battery 3. Therefore, a certain heat insulation space needs to be maintained between the side of the power battery 3 and the exhaust pipe 1, and a heat insulation component is provided therebetween. The installation space of the power battery 3 is restricted by the exhaust pipe, and the volume of the battery cannot be increased, which affects the endurance of the whole vehicle.

[0058] In the prior art, in the underbody structure of a vehicle model, the exhaust gas is also arranged inside the sill, which can effectively utilize the space at the bottom of the vehicle and avoid occupying the flat space at the bottom of the battery when the exhaust pipe is arranged in the middle. However, in order to prevent the heat of the exhaust pipe from affecting the sill, the exhaust pipe is cooled by a cooling pipe sleeved outside the exhaust pipe, thereby reducing the temperature of the outer surface of the sill assembly. As a result, the heat energy carried by the exhaust gas in the exhaust pipe is directly absorbed by the cooling water, and the waste heat in the waste water cannot be reasonably utilized, reducing the energy utilization rate of the vehicle.

[0059] Therefore, the present utility model provides a heat exchange structure between an exhaust pipe and an air conditioning system, which includes an exhaust pipe connected to the exhaust port of the engine. At least part of the exhaust pipe is arranged inside the sill beam, effectively utilizing the space at the bottom of the vehicle and avoiding occupying the flat space at the bottom of the battery when the exhaust pipe is arranged in the middle. Further, the cooling air duct 410 of the air conditioning system is connected inside the sill beam, and the fluid medium in the cooling air duct 410 flows into the sill beam and can exchange heat with the exhaust gas in the exhaust heat exchange pipe 210, so as to utilize the heat of the exhaust gas in the exhaust pipe for heating, improving the energy utilization rate of the vehicle; and, the flowing gas in the air conditioning system can take away the heat of the exhaust pipe.

[0060] To make the purpose, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below in conjunction with the accompanying drawings.

[0061] As Figures 2 to 5 shown, an embodiment of the present utility model discloses a heat exchange structure 10 between an exhaust pipe and an air conditioning system, which includes an exhaust front pipe 100 connected to the exhaust port of the engine, a sill beam 200, and an exhaust tail pipe 300. An exhaust heat exchange pipe 210 extending along the length direction of the vehicle is formed inside the sill beam 200. One end of the exhaust heat exchange pipe 210 is connected to the exhaust front pipe 100, and the other end is connected to the exhaust tail pipe 300. Among them, an exhaust muffler 20 is provided on the exhaust tail pipe 300. Regarding the specific structure and model of the exhaust muffler 20, those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations.

[0062] Moreover, the air conditioning system 400 has a cooling air duct 410. Inside the sill beam 200, a heat exchange air duct 420 extending along the length direction of the vehicle is formed around the exhaust heat exchange pipe 210. The heat exchange air duct 420 is communicated with the cooling air duct 410 of the air conditioning system 400, and the fluid medium in the heat exchange air duct 420 exchanges heat with the exhaust gas in the exhaust heat exchange pipe 210.

[0063] This heat exchange structure 10 of the exhaust pipe and the air conditioning system integrates the exhaust pipe in the sill beam 200 by connecting the exhaust heat exchange pipe 210 arranged in the sill beam 200 to the front exhaust pipe 100 and the rear exhaust pipe 300 respectively, making rational use of the space at the bottom of the vehicle and avoiding occupying the flat space at the bottom of the battery when the exhaust pipe is arranged in the middle. Moreover, a heat exchange air duct 420 is also arranged in the sill beam 200, and the heat exchange air duct 420 is communicated with the cooling air duct 410 of the air conditioning system 400. The fluid medium in the heat exchange air duct 420 can exchange heat with the exhaust gas in the exhaust heat exchange pipe 210. When the vehicle has a heating requirement, the heat carried by the exhaust gas in the exhaust heat exchange pipe 210 can be absorbed through the heat exchange air duct 420, thereby reducing the working burden of the air conditioning system 400 and improving the energy utilization rate of the vehicle. When the vehicle has no heating requirement, the air conditioning system 400 can blow natural wind into the heat exchange air duct 420 through the cooling air duct 410, and the heat carried by the exhaust gas in the exhaust heat exchange pipe 210 is taken out of the sill beam by the flowing vehicle and discharged outside the vehicle, reducing the heat damage problem caused by the exhaust heat exchange pipe 210 to the sill beam 200 itself and ensuring a good working environment for the sill beam 200.

[0064] Therefore, this heat exchange structure 10 of the exhaust pipe and the air conditioning system combines the exhaust pipe in the sill beam 200 and the air conditioning system 400 skillfully. On the one hand, the heat of the exhaust gas in the exhaust pipe is utilized for heating, improving the energy utilization rate of the vehicle. On the other hand, the heat of the exhaust pipe is taken away by the flowing gas in the air conditioning system 400, reducing the heat damage problem caused by the exhaust heat exchange pipe 210 to the sill beam 200 itself.

[0065] Among them, the flowing gas in the heat exchange air duct 420 of the air conditioning system 400 absorbs the heat of the exhaust gas in the exhaust heat exchange pipe 210, and the heated gas can be used for the power battery 30 or other components that need to be heated. Of course, it can also be used for heating the passenger compartment. The present invention does not make specific limitations on this.

[0066] It should be noted that the sill beam 200 can be made of aluminum by pressing; it can also be made of materials such as steel and aluminum alloy through processes such as forging and casting.

[0067] Specifically, when the sill beam 200 is made of aluminum by pressing, the sill beam 200 formed by die-casting can manufacture parts with complex shapes and precise dimensions, having a high surface finish and consistent dimensions. Compared with other casting methods, the sill beam 200 formed by die-casting performs excellently in terms of quality, dimensional accuracy, surface finish, etc. When the sill beam 200 is made of materials such as steel and aluminum alloy through processes such as forging and casting, those skilled in the art can design according to the actual situation and specific requirements, and the present embodiment does not make specific limitations on this.

[0068] In one embodiment, a plurality of reinforcing plates 201 are arranged inside the sill beam 200, and the plurality of reinforcing plates 201 are arranged staggeredly to divide the inside of the sill beam 200 into a plurality of cavities. It should be noted that the number of the reinforcing plates 201 can be two, three, four, seven, nine or other numbers, and the present utility model does not make specific limitations thereto.

[0069] Among them, at least one cavity is located in the middle of the cross-section of the sill beam 200 to form an exhaust pipe accommodating cavity 220, and the exhaust heat exchange pipeline 210 and the heat exchange air duct 420 are arranged in the exhaust pipe accommodating cavity 220. The plurality of cavities located on the periphery of the exhaust pipe accommodating cavity 220 form a heat insulation cavity 230.

[0070] In another alternative embodiment, the sill beam 200 forms only one cavity, and the exhaust heat exchange pipeline 210 and the heat exchange air duct 420 are both arranged in this cavity. Moreover, in order to improve the heat exchange efficiency between the exhaust heat exchange pipeline 210 and the heat exchange air duct 420, a heat exchanger can be arranged between the exhaust heat exchange pipeline 210 and the heat exchange air duct 420. Regarding the specific structure of the heat exchanger, those skilled in the art can design it according to the actual situation and specific requirements, and the present embodiment does not make specific limitations thereto.

[0071] Of course, regarding the specific heat exchange form between the exhaust heat exchange pipeline 210 and the heat exchange air duct 420, it is not limited to the above two embodiments only. Those skilled in the art can design it according to the actual situation and specific requirements, and the present embodiment does not make specific limitations thereto.

[0072] The internal structure of the sill beam 200 will be specifically described below.

[0073] As Figure 5 and Figure 6 shown, in this embodiment, four reinforcing plates 201 are arranged staggeredly inside the sill beam 200 to divide the inside of the sill beam 200 into nine accommodating cavities. The cavity in the middle of the sill beam 200 is the exhaust pipe accommodating cavity 220, and the eight cavities located on the periphery of the exhaust pipe accommodating cavity 220 form a heat insulation cavity 230.

[0074] Thus, the plurality of reinforcing plates 201 arranged inside the sill beam 200 can greatly enhance the structural strength of the sill beam 200. Also, because the exhaust pipe accommodating cavity 220 is located in the middle of the cross-section of the sill beam 200, and the heat insulation cavity 230 located on the periphery of the exhaust pipe accommodating cavity 220 can reduce the heat damage effect of the exhaust pipe. Moreover, when the sill beam 200 is subjected to an external impact, it can also achieve buffering and energy absorption through the plurality of heat insulation cavities 230 on the periphery, playing a protective role for the exhaust pipe accommodating cavity 220.

[0075] In this embodiment, within the exhaust pipe accommodating cavity 220, a plurality of support plates 202 are arranged at intervals along the circumferential direction of the exhaust heat exchange pipeline 210. One side of the plurality of support plates 202 is connected to the exhaust heat exchange pipeline 210, and the other end is connected to the reinforcing plate 201 that constitutes the exhaust pipe accommodating cavity 220.

[0076] It should be noted that the number of the support plates 202 can be set to two, three, four, six or other numbers. For example, Figure 5 and Figure 6 As shown, four support plates 202 are arranged at equal intervals along the circumferential direction of the exhaust heat exchange pipeline 210, and the included angle between two adjacent support plates 202 is 90°, so as to stably fix the exhaust heat exchange pipeline 210 in the exhaust pipe accommodating cavity 220. Of course, the arrangement of the support plates 202 is not limited to the structure in the above embodiment only. Those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations in this regard.

[0077] Within the exhaust pipe accommodating cavity 220, a cooling water pipe 240 is further arranged on the periphery of the exhaust heat exchange pipeline 210, and coolant flows through the cooling water pipe 240.

[0078] Thus, the cooling water pipe 240 arranged within the exhaust pipe accommodating cavity 220 enables the exhaust pipe not only to exchange heat with the heat exchange structure of the air conditioning system 400, but also to absorb the heat of the exhaust gas in the exhaust pipe through the cooling water pipe 240, better cooling the exhaust pipe and preventing excessive heat of the exhaust pipe from being dissipated from the sill beam 200.

[0079] Furthermore, as Figure 7 shown, the heat exchange air duct 420 of the air conditioning system 400 and the cooling water pipe 240 are both arranged within the exhaust pipe accommodating cavity 220. Among them, within the exhaust pipe accommodating cavity 220, the four support plates 202 divide the exhaust pipe accommodating cavity 220 into four heat exchange cavities. Two heat exchange air ducts 420 of the air conditioning system 400 are respectively arranged in two opposite heat exchange cavities, and the two cooling water pipes 240 are arranged in the other two heat exchange cavities. Thus, two heat exchange air ducts 420 and two cooling water pipes 240 are respectively arranged along the circumferential direction of the exhaust heat exchange pipeline 210, so as to greatly weaken the heat harm effect of the exhaust gas in the exhaust pipe while efficiently utilizing the waste heat of the exhaust gas in the exhaust heat exchange pipeline 210.

[0080] It should be noted that the two heat exchange air ducts 420 and the two cooling water pipes 240 are respectively fixed in the corresponding heat exchange cavities through the corresponding connecting plates 203. Regarding the specific structure of the connecting plates 203, those skilled in the art can design according to the actual situation and specific requirements, and this embodiment does not make specific limitations in this regard.

[0081] Of course, those capable of heat exchange with the exhaust heat exchange pipeline 210 are not limited to the heat exchange air duct 420 and the cooling water pipe 240 of the air conditioning system 400; in another embodiment, unclosed openings are formed at both end portions of the sill beam 200. During the driving of the vehicle, natural wind will enter the sill beam 200 from the opening on one side of the sill beam 200, absorb the heat of the exhaust gas in the exhaust heat exchange pipeline 210, and then discharge from the opening on the other side of the sill beam 200.

[0082] Moreover, in this embodiment, a heat insulation layer is formed on the inner wall surface of the reinforcing plate 201 that constitutes the exhaust pipe accommodating cavity 220.

[0083] Due to the heat insulation layer provided on the inner wall surface of the reinforcing plate 201 of the exhaust pipe accommodating cavity 220, the heat on the exhaust pipe can be blocked from dissipating out of the exhaust pipe accommodating cavity 220, thereby reducing the heat damage effect of the exhaust pipe.

[0084] It should be noted that the heat insulation layer can be composed of commonly used heat insulation materials in the art, such as aerogel, rock wool, etc. The heat insulation layer composed of aerogel can not only achieve the effects of heat insulation, noise reduction and vibration isolation, but also has good hydrophobic properties, which can prevent the sill beam 200 from being corroded. Of course, the specific structure of the heat insulation layer is not uniquely limited in this utility model.

[0085] Moreover, as Figure 6 shown, a sill temperature sensor 204 is provided on the outer wall of the sill beam 200, and an exhaust pipe temperature sensor 205 is provided on the reinforcing plate 201 that constitutes the exhaust pipe accommodating cavity 220, which can detect the temperature on the sill beam 200 and the temperature on the exhaust pipe in real time. If the temperature on the sill beam 200 is too high, it may be necessary to check the heat insulation components in the sill beam 200. If the temperature on the exhaust pipe is too high, it may be necessary to check whether the exhaust heat exchange pipeline 210 is damaged, which is beneficial to detecting the faulty components early and then replacing them as soon as possible. It should be noted that for the specific models and specifications of the temperature sensors, those skilled in the art can design them according to the actual situation, and this embodiment does not make specific limitations.

[0086] Furthermore, as Figure 3 shown, in this embodiment, the air conditioning system 400 is connected to the thermal management controller 430. The temperature signals collected by the sill temperature sensor 204 and the exhaust pipe temperature sensor 205 are fed back to the thermal management controller 430 in the form of electrical signals. Furthermore, the thermal management controller 430 adjusts the flow rate and temperature of the flowing gas in the heat exchange air duct 420 of the air conditioning system 400 in real time to flow in a state more suitable for heat exchange with the exhaust pipe.

[0087] The connection structure between the sill beam 200 and the exhaust pipe and the cold air duct of the air conditioning system 400 will be described below.

[0088] As Figure 3 shown, exhaust adapters 500 are provided between the exhaust heat exchange pipe 210 and the front exhaust pipe 100 and the rear exhaust pipe 300.

[0089] Moreover, an air duct adapter 600 is provided between the cooling air duct 410 and the heat exchange air duct 420 of the sill beam 200.

[0090] Specifically, by means of the exhaust adapter 500 provided between the exhaust heat exchange pipe 210 and the front exhaust pipe 100 and the rear exhaust pipe 300, and the air duct adapter 600 provided between the cooling air duct 410 and the heat exchange air duct 420 of the sill beam 200, it is ensured that the exhaust gas in the exhaust pipe and the cooling air duct 410 of the air conditioning system 400 can be firmly connected to the corresponding structure of the sill beam 200. It should be noted that the exhaust adapter 500 and the air duct adapter 600 can be common flanges or other adapter components in the technical field, and no specific limitation is made in this embodiment.

[0091] As Figure 3 and Figure 4 shown, both the exhaust adapter 500 and the air duct adapter 600 have parts located inside the sill beam 200, and are fixedly connected to the inner wall surface of the sill beam 200 through vibration damping members 700.

[0092] Specifically, by providing the vibration damping members 700, the vibration on the sill beam 200 is reduced from being transmitted to the exhaust adapter 500 and the air duct adapter 600, thereby providing a relatively stable assembly environment for the exhaust adapter 500 and the air duct adapter 600.

[0093] As Figure 3 shown, a first seal 510 is provided at the position where the exhaust adapter 500 is connected to the exhaust heat exchange pipe 210, the front exhaust pipe 100 or the rear exhaust pipe 300.

[0094] Moreover, a second seal 610 is provided at the position where the air duct adapter 600 is connected to the cooling air duct 410 and the heat exchange air duct 420. It should be noted that the seal can be a common gasket in the art, and no specific limitation is made in the present utility model.

[0095] Specifically, through the first seal 510 and the second seal 610, the exhaust gas in the exhaust pipe and the gas in the cooling air duct 410 of the air conditioning system 400 are prevented from leaking from the adapter.

[0096] In summary, the present utility model provides a heat exchange structure 10 for an exhaust pipe and an air conditioning system. The heat exchange structure will be described below in conjunction with the working process.

[0097] The thermal management controller 430 receives the signals fed back by the threshold temperature sensor 204 and the exhaust pipe temperature sensor 205. When the temperature of the outer surface of the threshold beam 200 (for example, lower than 1 °C) is detected to be low, due to the air convection generated during the vehicle's travel, the natural wind during the vehicle's travel is utilized to enter the threshold beam 200 from one end opening of the threshold beam 200, take away the heat on the exhaust heat exchange pipeline 210, and discharge it from the other end opening, thereby achieving the cooling of the exhaust pipe. It should be noted that the heated natural wind can be discharged to the outside or introduced into the vehicle to heat components with heating requirements such as the passenger compartment or the power battery 30.

[0098] When the temperature of the outer surface of the threshold beam 200 (for example, exceeding 50 °C) is detected to be high, the cooling air duct 410 of the air conditioning system 400 conveys cold air into the heat exchange air duct 420 through the air duct adapter 600, and the cold air passing through the heat exchange air duct 420 exchanges heat with the exhaust heat exchange pipeline 210, thereby cooling the exhaust pipe. Of course, the heated cold air can also be introduced into components with heating requirements such as the passenger compartment or the power battery 30 in the vehicle for heating. It should be noted that the cooling water in the cooling water pipe 240 can flow continuously to cool the exhaust pipe, or the cooling water can be selectively made to flow. This embodiment does not make specific limitations on this.

[0099] Among them, regarding the temperature thresholds of the threshold beam 200 and the exhaust pipe in the above working process, those skilled in the art can design according to the actual situation and specific requirements. This embodiment does not make specific limitations on this.

[0100] The present utility model also discloses an automobile, including the heat exchange structure 10 of any one of the above exhaust pipes and the air conditioning system.

[0101] This kind of automobile utilizes the heat of the exhaust gas in the exhaust pipe through the heat exchange structure 10 of the exhaust pipe and the air conditioning system for heating, improving the energy utilization rate of the automobile; and, the flowing gas in the air conditioning system 400 can take away the heat of the exhaust pipe. On the premise of ensuring that the exhaust pipe is integrated into the threshold beam 200 and improving the space utilization rate, the heat damage problem caused by the exhaust heat exchange pipeline 210 to the threshold beam 200 itself is reduced, and the reliability of the automobile is improved.

[0102] It should be noted that, in addition to the embodiments of the present utility model described in the above specific embodiments, those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Although the description of the present utility model is introduced in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of introducing the utility model in conjunction with the embodiment is to cover other alternatives or modifications that may be extended based on the claims of the present utility model. In order to provide a deep understanding of the present utility model, many specific details are included in the above description, and the present utility model can also be implemented without using these details. In addition, in order to avoid confusion or obscuring the key points of the present utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0103] It should be noted that in this specification, similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0104] In the description of this embodiment, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0105] Terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0106] In the description of this embodiment, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific situations.

[0107] Although the present utility model has been illustrated and described by referring to some preferred embodiments thereof, those of ordinary skill in the art should understand that the above content is a further detailed description of the present utility model in connection with specific embodiments, and it cannot be determined that the specific implementation of the present utility model is limited only to these descriptions. Those skilled in the art can make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present utility model.

Claims

1. A heat exchange structure between an exhaust pipe and an air conditioning system, characterized in that: It includes an exhaust front section pipeline, a door sill beam and an exhaust tail section pipeline connected to the exhaust port of the engine, wherein an exhaust heat exchange pipeline extending along the length direction of the vehicle is formed in the door sill beam, one end of the exhaust heat exchange pipeline is connected to the exhaust front section pipeline, and the other end is connected to the exhaust tail section pipeline; and, The air conditioning system has a cooling air duct, and a heat exchange air duct extending along the length direction of the vehicle is formed in the door sill at the periphery of the exhaust heat exchange pipeline. The heat exchange air duct is connected to the cooling air duct of the air conditioning system, and the fluid medium in the heat exchange air duct exchanges heat with the exhaust gas in the exhaust heat exchange pipeline.

2. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 1, characterized in that: A plurality of reinforcing plates are arranged in the threshold beam, and the plurality of reinforcing plates are arranged in a staggered manner to divide the threshold beam into a plurality of cavities; wherein, At least one of the cavities is located in the middle of the cross section of the door sill beam, forming an exhaust pipe accommodating cavity. The exhaust heat exchange pipeline and the heat exchange air duct are arranged in the exhaust pipe accommodating cavity. The cavity located at the periphery of the exhaust pipe accommodating cavity forms an insulating cavity.

3. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 2, characterized in that: In the exhaust pipe accommodating cavity, a plurality of support plates are arranged at intervals along the circumference of the exhaust heat exchange pipeline, one side of the plurality of support plates is connected to the exhaust heat exchange pipeline, and the other end is connected to the reinforcing plate constituting the exhaust pipe accommodating cavity.

4. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 2, characterized in that: A cooling water pipe is also provided on the periphery of the exhaust heat exchange pipeline in the exhaust pipe accommodating cavity, and a coolant flows in the cooling water pipe.

5. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 2, characterized in that: A heat insulating layer is formed on the inner wall surface of the reinforcing plate constituting the exhaust pipe accommodating cavity.

6. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 2, characterized in that: A threshold temperature sensor is provided on the outer side wall of the threshold beam; and An exhaust pipe temperature sensor is provided on the reinforcing plate constituting the exhaust pipe accommodating cavity.

7. The heat exchange structure of the exhaust pipe and the air conditioning system according to any one of claims 1 to 6, characterized in that: An exhaust adapter is provided between the exhaust heat exchange pipeline and the exhaust front section pipeline and the exhaust rear section pipeline; and, An air duct adapter is provided between the cooling air duct and the heat exchange air duct of the door sill beam.

8. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 7, characterized in that: The exhaust adapter and the air duct adapter are both partially located in the door sill beam, and are fixedly connected to the inner wall surface of the door sill beam through a vibration damping member.

9. The heat exchange structure of the exhaust pipe and the air conditioning system according to claim 7, characterized in that: A first sealing member is provided at a position where the exhaust adapter is connected to the exhaust heat exchange pipeline, the exhaust front section pipeline or the exhaust rear section pipeline; and, A second sealing member is provided at a position where the air duct adapter is connected to the cooling air duct and the heat exchange air duct.

10. An automobile, characterized in that: It comprises the heat exchange structure of the exhaust pipe and the air conditioning system as described in any one of claims 1 to 9.

Images