Tail gas waste heat recovery device and vehicle

Abstract

The utility model relates to a tail gas waste heat recovery device and a vehicle, the tail gas waste heat recovery device comprises an exhaust pipe and a heat exchange mechanism used for recovering tail gas waste heat in the exhaust pipe, the heat exchange mechanism comprises a heat exchange shell and a heat exchange part, the heat exchange part and the heat exchange shell are integrally formed, and the heat exchange shell is arranged in the heat exchange shell. And the heat exchange shell is arranged on the pipe wall of the exhaust pipe. According to the tail gas waste heat recovery device, the heat exchange part and the heat exchange shell are integrally formed, and all connecting pieces for assembling the heat exchange part and the heat exchange shell are omitted, so that the structure of the tail gas waste heat recovery device is simplified, and the structure of the tail gas waste heat recovery system is further simplified.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is a kind of tail gas waste heat recovery device and vehicle. BACKGROUND

[0002] With the development of vehicle technology, various waste heat recovery devices are used to accelerate engine preheating or for passenger cabin heating and defrosting, among which, tail gas waste heat recovery is one of the technical focuses. The tail gas waste heat recovery device of prior art has more connections, complex structure and large size. SUMMARY

[0003] To solve the above technical problems, the utility model provides a tail gas waste heat recovery device and vehicle, which can simplify the structure.

[0004] To achieve the above purpose, the utility model provides a tail gas waste heat recovery device, which comprises an exhaust pipe and a heat exchange mechanism for recovering tail gas waste heat in the exhaust pipe. The heat exchange mechanism comprises a heat exchange shell and a heat exchange part. The heat exchange part is integrally formed with the heat exchange shell. The heat exchange shell is arranged on the pipe wall of the exhaust pipe.

[0005] In one embodiment of the utility model, the heat exchange mechanism further comprises a heat exchange base. The heat exchange base is arranged at the bottom of the heat exchange shell. The heat exchange part is arranged on the heat exchange base. The heat exchange base is integrally formed with the heat exchange part and the heat exchange shell.

[0006] In one embodiment of the utility model, the pipe wall of the exhaust pipe is provided with a mounting hole. The outer edge of the heat exchange shell is arranged on the mounting hole.

[0007] In one embodiment of the utility model, a heat exchange cavity is formed between the heat exchange shell and the heat exchange base. The heat exchange part is located in the heat exchange cavity. The heat exchange part divides the heat exchange cavity into a first heat exchange cavity and a second heat exchange cavity. Working medium flows through the first heat exchange cavity. Tail gas flows through the second heat exchange cavity. The heat exchange part is used to realize heat exchange between working medium and tail gas.

[0008] In one embodiment of the utility model, the heat exchange shell is provided with a first inlet, a first outlet, a second inlet and a second outlet. The first inlet and the first outlet are both connected with the first heat exchange cavity. The second inlet and the second outlet are both connected with the second heat exchange cavity.

[0009] In an embodiment of the utility model, first transition connecting portion and second transition connecting portion are arranged on the heat exchange shell, the second inlet is formed between one end of the heat exchange base and the first transition connecting portion, and the second outlet is formed between the other end of the heat exchange base and the second transition connecting portion.

[0010] In an embodiment of the utility model, the heat exchange cavity includes a working medium communication cavity and a tail gas communication cavity, the heat exchange part includes a plurality of heat exchange walls connected in sequence, a tail gas flow channel or a working medium flow channel is formed between two adjacent heat exchange walls, the working medium flow channels are connected in communication through the working medium communication cavity to form the first heat exchange cavity, and the tail gas flow channels are connected in communication through the tail gas communication cavity to form the second heat exchange cavity.

[0011] In an embodiment of the utility model, the bottom of the working medium flow channel is provided with a flow channel baffle, and the flow channel baffle extends upward in the vertical direction in the working medium flow channel.

[0012] In an embodiment of the utility model, the heat exchange mechanism is located inside the exhaust pipe, or the heat exchange mechanism is located outside the exhaust pipe, or the heat exchange mechanism is partially located inside the exhaust pipe and partially located outside the exhaust pipe.

[0013] A vehicle is provided, comprising the tail gas waste heat recovery device.

[0014] Compared with the prior art, the above technical scheme of the utility model has the following advantages:

[0015] The heat exchange mechanism comprises a heat exchange shell and a heat exchange part, the heat exchange part is integrally formed with the heat exchange shell, various connecting pieces for assembling the heat exchange part and the heat exchange shell are omitted, therefore, the structure of the tail gas waste heat recovery device is simplified, and the structure of the tail gas waste heat recovery system is further simplified. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0017] Figure 1 It is the first structure schematic view of the tail gas waste heat recovery device of the utility model;

[0018] Figure 2 It is the second structure schematic view of the tail gas waste heat recovery device of the utility model;

[0019] Figure 3is the heat exchange mechanism structure schematic view of the tail gas waste heat recovery device of the utility model;

[0020] Figure 4 is the main view of the heat exchange mechanism of the tail gas waste heat recovery device of the utility model;

[0021] Figure 5 is Figure 4 the sectional view of A-A in figure 1;

[0022] Figure 6 is Figure 4 the sectional view of B-B in figure 1;

[0023] Figure 7 is the first structure schematic view of flow channel baffle of the tail gas waste heat recovery device of the utility model;

[0024] Figure 8 is Figure 7 the local enlarged view of A in figure 1;

[0025] Figure 9 is the third structure schematic view of the tail gas waste heat recovery device of the utility model;

[0026] Figure 10 is the first position structure schematic view of exhaust pipe and heat exchange mechanism of the tail gas waste heat recovery device of the utility model;

[0027] Figure 11 is the second position structure schematic view of exhaust pipe and heat exchange mechanism of the tail gas waste heat recovery device of the utility model;

[0028] Figure 12 is the third position structure schematic view of exhaust pipe and heat exchange mechanism of the tail gas waste heat recovery device of the utility model;

[0029] Figure 13 is the second structure schematic view of flow channel baffle of the tail gas waste heat recovery device of the utility model.

[0030] Description of the drawing mark of the specification:

[0031] 1, exhaust pipe; 2, heat exchange mechanism; 3, heat exchange shell; 4, heat exchange part; 5, mounting hole; 6, first welding part; 7, second welding part; 8, heat exchange cavity; 9, first heat exchange cavity; 10, second heat exchange cavity; 11, first inlet; 12, first outlet; 13, second inlet; 14, second outlet; 15, working medium communication cavity; 16, tail gas communication cavity; 17, heat exchange wall; 18, tail gas flow channel; 19, working medium flow channel; 20, flow channel baffle; 21, heat exchange base; 22, first transition connecting part; 23, second transition connecting part; 24, first flow channel baffle; 25, second flow channel baffle; 26, first cavity; 27, second cavity; 28, third cavity. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0033] Embodiment one

[0034] Referring to Figures 1-13 The utility model tail gas waste heat recovery device, including exhaust pipe 1 and be used for recycling exhaust pipe 1 in tail gas waste heat heat exchange mechanism 2, heat exchange mechanism 2 includes heat exchange shell 3 and heat exchange part 4, heat exchange part 4 and heat exchange shell 3 integrally formed, heat exchange shell 3 sets up on the pipe wall of exhaust pipe 1.

[0035] The tail gas waste heat recovery device of the application is integrated with all parts, so that the structure is simplified and the volume is reduced. Specifically, as shown in Figure 1 And Figure 9 The tail gas waste heat recovery device of the application includes an exhaust pipe 1 and a heat exchange mechanism 2 arranged on the exhaust pipe 1. The heat exchange mechanism 2 is used to recover the waste heat of the tail gas in the exhaust pipe 1, so that the recovered waste heat can be used for engine preheating, passenger cabin heating, defrosting or other scenarios. Further, the heat exchange mechanism 2 includes a heat exchange shell 3 and a heat exchange part 4. The heat exchange mechanism 2 is arranged on the exhaust pipe 1 through the heat exchange shell 3. In addition, the heat exchange part 4 is integrally formed with the heat exchange shell 3. Therefore, various connecting parts for assembling the heat exchange part 4 and the heat exchange shell 3 are omitted, the structure of the heat exchange mechanism 2 is simplified, the volume is reduced, and the occupied space is further reduced.

[0036] In one embodiment, the heat exchange mechanism further includes a heat exchange base 21 arranged at the bottom of the heat exchange shell 3. The heat exchange part 4 is arranged on the heat exchange base 21. The heat exchange base 21 is integrally formed with the heat exchange part 4 and the heat exchange shell 3.

[0037] As shown in Figure 3 The heat exchange mechanism 2 includes a heat exchange shell 3, a heat exchange part 4 and a heat exchange base 21. The heat exchange base 21 is arranged at the bottom of the heat exchange shell 3. The heat exchange part 4 is arranged on the heat exchange base 21. The heat exchange shell 3, the heat exchange part 4 and the heat exchange base 21 are integrally formed. Therefore, there is no connecting part between the heat exchange shell 3 and the heat exchange base 21, and between the heat exchange base 21 and the heat exchange part 4, which simplifies the structure of the tail gas waste heat recovery device.

[0038] In one embodiment, the exhaust pipe 1 is provided with a mounting hole 5, and the outer edge of the heat exchange shell 3 is arranged on the mounting hole 5.

[0039] The heat exchange shell 3 of the present application is mounted on the mounting hole 5 of the exhaust pipe 1 to realize the connection of the heat exchange mechanism 2 and the exhaust pipe 1. Specifically, the heat exchange shell 3 of the present application is formed by welding or riveting with the exhaust pipe 1 without using connecting parts. As shown in Figure 2 The heat exchange mechanism 2 is a whole structure, that is, the heat exchange shell 3 and the heat exchange part 4 inside it are a whole, the exhaust pipe 1 is provided with a mounting hole 5, and the heat exchange mechanism 2 is welded or riveted to the mounting hole 5 as a whole structure to facilitate the heat exchange mechanism 2 to recover the waste heat of the exhaust pipe 1. Further, the first welding part 6 (or the first riveting part 6) is formed on the pipe wall of the exhaust pipe 1 at or around the mounting hole 5, the edge of the heat exchange mechanism 2 forms the second welding part 7 (or the second riveting part 7), and the first welding part 6 and the second welding part 7 are welded (or the first riveting part 6 and the second riveting part 7 are riveted), which realizes the welding or riveting of the heat exchange mechanism 2 and the exhaust pipe 1. Therefore, there is no connecting part between the exhaust pipe 1 and the heat exchange mechanism 2, and between the heat exchange shell 3 and the heat exchange part 4, which simplifies the structure of the waste heat recovery device.

[0040] In one embodiment, the heat exchange shell 3 and the heat exchange base 21 form a heat exchange cavity 8, the heat exchange part 4 is located in the heat exchange cavity 8, the heat exchange part 4 divides the heat exchange cavity 8 into a first heat exchange cavity 9 and a second heat exchange cavity 10, the first heat exchange cavity 9 flows through a working medium, and the second heat exchange cavity 10 flows through exhaust gas, and the heat exchange part 4 is used to realize the heat exchange between the working medium and the exhaust gas.

[0041] The waste heat recovery device of the present application exchanges heat through the first heat exchange cavity 9 and the second heat exchange cavity 10. Specifically, as shown in Figure 4 and Figure 5 The heat exchange base 21 is arranged at the bottom of the heat exchange shell 3, the heat exchange shell 3 and the heat exchange base 21 form a heat exchange cavity 8, the heat exchange part 4 is arranged in the heat exchange cavity 8, the heat exchange part 4 divides the heat exchange cavity 8 in the heat exchange shell 3 into a first heat exchange cavity 9 and a second heat exchange cavity 10, and the first heat exchange cavity 9 and the second heat exchange cavity 10 are not communicated. Further, the first heat exchange cavity 9 flows through a working medium, which can be a water solution or other high-efficiency heat exchange medium, or can also be a gas working medium; the second heat exchange cavity 10 flows through the exhaust gas of the exhaust pipe 1; therefore, the working medium flows through the first heat exchange cavity 9, the exhaust gas flows through the second heat exchange cavity 10, and the exhaust gas and the working medium exchange heat through the heat exchange part 4, and then the working medium flows to the corresponding mechanism to use the heat for engine preheating or passenger cabin heating or defrosting.

[0042] In one of the embodiments, the heat exchange shell 3 is provided with a first inlet 11, a first outlet 12, a second inlet 13 and a second outlet 14, the first inlet 11 and the first outlet 12 are both communicated with the first heat exchange cavity 9, and the second inlet 13 and the second outlet 14 are both communicated with the second heat exchange cavity 10.

[0043] The first heat exchange cavity 9 and the second heat exchange cavity 10 of the present application are provided with corresponding inlets and outlets to realize the circulation of the working medium or the tail gas. Specifically, as shown in Figure 3 the working medium enters and flows out of the first heat exchange cavity 9 in the heat exchange shell 3, and therefore, the heat exchange shell 3 is provided with the first inlet 11 and the first outlet 12 for the working medium to enter and exit, the first inlet 11 is communicated with one end of the first heat exchange cavity 9, and the first outlet 12 is communicated with the other end of the first heat exchange cavity 9, so as to facilitate the working medium to enter the first heat exchange cavity 9 from the first inlet 11, and the working medium flows out of the first outlet 12 after exchanging heat with the tail gas in the second heat exchange cavity 10. The tail gas enters and flows out of the second heat exchange cavity 10 in the heat exchange shell 3, and therefore, the heat exchange shell 3 is provided with the second inlet 13 and the second outlet 14 for the tail gas to enter and exit, the second inlet 13 is communicated with one end of the second heat exchange cavity 10, and the second outlet 14 is communicated with the other end of the second heat exchange cavity 10, so as to facilitate the tail gas to enter the second heat exchange cavity 10 from the second inlet 13, and the tail gas flows out of the second outlet 14 after exchanging heat with the working medium in the first heat exchange cavity 9.

[0044] In one of the embodiments, the heat exchange shell is provided with a first transition connection 22 and a second transition connection 23, and the second inlet 13 is formed between one end of the heat exchange base 21 and the first transition connection 22, and the second outlet 14 is formed between the other end of the heat exchange base 21 and the second transition connection 23.

[0045] The first transition connection 22 and the second transition connection 23 of the present application reduce the flow resistance of the tail gas. Specifically, as shown in Figure 3As shown, the heat exchange mechanism 2 includes a heat exchange shell 3, a heat exchange section 4, and a heat exchange base 21. The heat exchange base 21 is disposed at the bottom of the heat exchange shell 3, and the heat exchange section 4 is disposed between the heat exchange shell 3 and the heat exchange base 21. The heat exchange shell 3, the heat exchange base 21, and the heat exchange section 4 are all arranged along their length direction. Along the length direction of the heat exchange shell 3, a first transition connection 22 and a second transition connection 23 are located at both ends of the heat exchange shell 3. A second inlet 13 is formed between one end of the heat exchange base 21 and the first transition connection 22. By replacing the right-angle reversal of the prior art with the first transition connection 22, the flow resistance of exhaust gas from the second inlet 13 to the second heat exchange chamber 10 can be reduced. A second outlet 14 is formed between the other end of the heat exchange base 21 and the second transition connection 23. By replacing the right-angle reversal of the prior art with the second transition connection 23, the flow resistance of exhaust gas from the second heat exchange chamber 10 to the second outlet 14 can be reduced, thereby reducing the heat loss of the exhaust gas.

[0046] In one embodiment, the heat exchange chamber 8 includes a working fluid communication chamber 15 and an exhaust gas communication chamber 16. The heat exchange section 4 includes a plurality of heat exchange walls 17 connected end to end. An exhaust gas flow channel 18 or a working fluid flow channel 19 is formed between two adjacent heat exchange walls 17. The working fluid flow channel 19 is connected through the working fluid communication chamber 15 to form a first heat exchange chamber 9, and the exhaust gas flow channel 18 is connected through the exhaust gas communication chamber 16 to form a second heat exchange chamber 10.

[0047] like Figure 5 As shown, the heat exchange section 4 consists of several heat exchange walls 17 connected end-to-end. These heat exchange walls 17 are arranged at predetermined intervals and are connected end-to-end in an S-shape to form the heat exchange section 4. The heat exchange section 4 is used to achieve heat exchange between the working fluid and the exhaust gas; that is, the several S-shaped heat exchange walls 17 connected end-to-end are used to achieve heat exchange between the working fluid and the exhaust gas. An exhaust gas flow channel 18 or a working fluid flow channel 19 is formed between any two adjacent heat exchange walls 17, and an exhaust gas flow channel 18 is formed between the heat exchange wall 17 and the inner wall of the adjacent heat exchange shell 3, as shown... Figure 5 As shown, there are a total of 9 exhaust gas channels 18 and 8 working fluid channels 19. The heat exchange chamber 8 is provided with an exhaust gas connecting chamber 16 and a working fluid connecting chamber 15. Several working fluid channels 19 are connected through the working fluid connecting chamber 15 to form the first heat exchange chamber 9, and several exhaust gas channels 18 are connected through the exhaust gas connecting chamber 16 to form the second heat exchange chamber 10. Therefore, the first heat exchange chamber 9 and the second heat exchange chamber 10 exchange heat between the working fluid and the exhaust gas through the heat exchange section 4, that is, the first heat exchange chamber 9 and the second heat exchange chamber 10 exchange heat between the working fluid and the exhaust gas through several heat exchange walls 17 connected end-to-end.

[0048] In one embodiment, a flow channel baffle 20 is provided at the bottom of the working fluid flow channel 19, and the flow channel baffle 20 extends vertically upward within the working fluid flow channel 19.

[0049] The application optimizes the flow field of the working medium in the first heat exchange cavity 9 by the flow channel baffle 20. Specifically, as shown in Figure 7 and Figure 8 , the bottom of the working medium flow channel 19 is provided with a flow channel baffle 20, and the working medium communication cavity 15 is arranged on the heat exchange base 21. Since the working medium communication cavity 15 is located at the bottom of the working medium flow channel 19, the flow channel baffle 20 is arranged in the working medium communication cavity 15. The working medium flows into the working medium communication cavity 15 through the first inlet 11, and the flow channel baffle 20 can make the working medium flow into the bottom of each working medium flow channel 19 in the second direction shown in Figure 8 , so that the working medium flows to each working medium flow channel 19 more uniformly, rather than being concentrated in the working medium flow channel 19 close to the first inlet 11; in addition, since the flow channel baffle 20 extends in the first direction (vertically upward direction) in the working medium flow channel 19, as shown in Figure 13 , the flow channel baffle 20 can also make the working medium flow into each working medium flow channel 19 in the first direction, so that the working medium is distributed more uniformly in the vertical direction of the working medium flow channel 19, rather than being concentrated at the bottom of the working medium flow channel 19. Therefore, the flow channel baffle 20 makes the working medium flow uniformly in the working medium flow channel 19, which can improve the heat exchange efficiency between the exhaust gas and the working medium. Wherein, each working medium flow channel 19 and the exhaust gas flow channel 18 of the application are arranged in the vertical direction, and the working medium flow channel 19 and the exhaust gas flow channel 18 can also be arranged horizontally according to actual needs. Further, as shown in Figure 6 , the flow channel baffle 20 is provided with two, including a first flow channel baffle 24 and a second flow channel baffle 25, the first flow channel baffle 24 is located in the working medium communication cavity 15 close to the first inlet 11, the second flow channel baffle 25 is located in the working medium communication cavity 15 close to the first outlet 12, the first flow channel baffle 24 and the second flow channel baffle 25 divide the working medium communication cavity 15 into the first cavity 26, the second cavity 27 and the third cavity 28 which are connected, specifically, the first cavity 26 and the second cavity 27 are connected through the working medium flow channel 19, in addition, the first inlet 11 is connected with the first cavity 26, and the first outlet 12 is connected with the third cavity 28. The working medium flows into the first cavity 26 of the working medium communication cavity 15 through the first inlet 11, and then uniformly flows into each working medium flow channel 19 under the action of the first flow channel baffle 24, the working medium in each working medium flow channel 19 reaches the second cavity 27, and then flows to the second flow channel baffle 25 in the second cavity 27, under the action of the second flow channel baffle 25, the working medium in each working medium flow channel 19 uniformly flows to the third cavity 28, and finally the working medium in the third cavity 28 flows out through the first outlet 12.

[0050] In one of the embodiments, the heat exchange mechanism 2 is located inside the exhaust pipe 1, or the heat exchange mechanism 2 is located outside the exhaust pipe 1, or the heat exchange mechanism 2 is partially located inside the exhaust pipe 1 and partially located outside the exhaust pipe 1.

[0051] The heat exchange mechanism 2 of this application can be disposed inside the exhaust pipe 1, or outside the exhaust pipe 1, or part of the heat exchange mechanism 2 can be located inside the exhaust pipe 1 and part of it can be located outside the exhaust pipe 1. Specifically, when the heat exchange mechanism 2 is disposed inside the exhaust pipe 1, such as... Figure 11 As shown, there is no need to set the first transition connection 22 and the second transition connection 23 at this time. One end of the tail gas flow channel 18 in the second heat exchange chamber 10 forms the second inlet 13, and the other end of the tail gas flow channel 18 in the second heat exchange chamber 10 forms the second outlet 14. The tail gas in the exhaust pipe 1 directly enters the second inlet 13 along its flow direction, and flows out from the second outlet 14 after passing through the second heat exchange chamber 10. In the whole process, the tail gas in the exhaust pipe 1 does not change direction, which reduces heat loss. Moreover, there are no external parts of the exhaust pipe 1. Based on the one-piece molding and welding or riveting process of this application, the external structure of the tail gas waste heat recovery device is simplified, and the volume of the tail gas waste heat recovery device is reduced. In addition, the first inlet 11 and the first outlet 12 are set on the top surface of the heat exchange shell 3, ensuring that the first inlet 11 and the first outlet 12 are connected to the first heat exchange chamber 9. Figure 10 As shown, when the heat exchange mechanism 2 is located outside the exhaust pipe 1, a first transition connection 22 and a second transition connection 23 need to be provided. The first transition connection 22 and the second transition connection 23 replace the right-angle reversal to reduce heat loss. Furthermore, the integral molding and welding or riveting process based on this application simplifies the structure of the exhaust gas waste heat recovery device and reduces its volume. For example... Figure 12 As shown, when part of the heat exchange mechanism 2 is located inside the exhaust pipe 1 and part is located outside the exhaust pipe 1, the part of the heat exchange mechanism 2 located outside the exhaust pipe 1 needs to be provided with a first transition connection 22 and a second transition connection 23. The first transition connection 22 and the second transition connection 23 replace the right-angle reversal to reduce heat loss. Furthermore, the integral molding and welding or riveting process based on this application simplifies the structure of the exhaust gas waste heat recovery device and reduces the volume of the exhaust gas waste heat recovery device.

[0052] In one embodiment, the first heat exchange chamber 9 is located close to the exhaust pipe 1, and the second heat exchange chamber 10 is located away from the exhaust pipe 1.

[0053] This application improves the heat exchange efficiency between the working fluid and the exhaust gas by adjusting the positions of the first heat exchange chamber 9 and the second heat exchange chamber 10. Specifically, as shown... Figure 5 and Figure 8As shown, the heat exchange part 4 divides the heat exchange cavity 8 in the heat exchange shell 3 into two cavities, one of which is located on the side of the heat exchange part 4 close to the exhaust pipe 1, i.e., the first heat exchange cavity 9 is arranged close to the exhaust pipe 1; the other cavity is located on the side of the heat exchange part 4 away from the exhaust pipe 1, i.e., the second heat exchange cavity 10 is arranged away from the exhaust pipe 1. Since the first heat exchange cavity 9 is arranged close to the exhaust pipe 1 and the second heat exchange cavity 10 is arranged away from the exhaust pipe 1, the working medium in the first heat exchange cavity 9 is close to the inner cavity of the exhaust pipe 1, so as to efficiently realize the heat exchange efficiency with the tail gas.

[0054] In one embodiment, the directions of the first inlet 11 and the first outlet 12 are along the flow direction of the working medium in the heat exchange shell 3, and the directions of the second inlet 13 and the second outlet 14 are along the flow direction of the tail gas in the heat exchange shell 3.

[0055] The flow directions of the first inlet 11, the first outlet 12, the second inlet 13 and the second outlet 14 are set to reduce energy loss and improve heat exchange efficiency. Specifically, the directions of the first inlet 11 and the first outlet 12 are along the flow direction of the working medium in the heat exchange shell 3, which can reduce the energy loss of the working medium when reversing in the pipeline; the directions of the second inlet 13 and the second outlet 14 are along the flow direction of the tail gas in the heat exchange shell 3, which can reduce the energy loss of the tail gas when reversing in the pipeline. In addition, the first inlet 11 and the first outlet 12 can also be arranged on the side of the heat exchange shell 3 according to actual needs.

[0056] Embodiment two

[0057] A vehicle comprising the above-mentioned tail gas waste heat recovery device.

[0058] Specifically, the vehicle comprises a tail gas waste heat recovery device, the tail gas waste heat recovery device comprising an exhaust pipe 1 and a heat exchange mechanism 2 for recovering waste heat of tail gas in the exhaust pipe 1, a controller, a control valve and a temperature sensor, the heat exchange mechanism 2 comprising a heat exchange shell 3 and a heat exchange part 4, the heat exchange part 4 being arranged in the heat exchange shell 3, the heat exchange part 4 being integrally formed with the heat exchange shell 3, the heat exchange shell 3 being arranged on the pipe wall of the exhaust pipe 1, the temperature sensor being arranged in the heat exchange shell 3, the temperature sensor being used to collect the temperature of the working medium in the heat exchange shell 3, the control valve being arranged on the first inlet 11 or the first outlet 12, the control valve being used to adjust the flow of the working medium in the heat exchange shell 3, the controller being connected with the temperature sensor and the control valve.

[0059] The heat exchange mechanism 2 of the application comprises a heat exchange shell 3 and a heat exchange part 4, the heat exchange part 4 is integrally formed with the heat exchange shell 3, and various connecting pieces for assembling the heat exchange part 4 and the heat exchange shell 3 are omitted, therefore, the application simplifies the structure of the tail gas waste heat recovery device, and further simplifies the structure of the tail gas waste heat recovery system, and further simplifies the structure of the vehicle. In addition, the application monitors the temperature of the working medium in real time through the temperature sensor, when the temperature of the working medium reaches the threshold value, the controller can adjust the flow size of the control valve to reduce the temperature of the working medium; when the temperature of the working medium is lower than the threshold value, the controller can adjust the flow size of the control valve to increase the temperature of the working medium, so as to realize the automatic adjustment of the temperature of the working medium. Further, the corresponding temperature sensor can also be arranged in the exhaust pipe, and the tail gas temperature and the working medium temperature are jointly adjusted, and the tail gas temperature and the working medium temperature are controlled and calibrated.

[0060] It should be noted that the above is only the preferred embodiment of the present application and the technical principle applied. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and more other equivalent embodiments can be included without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. An exhaust gas heat recovery device, characterized by: The exhaust pipe (1) and the heat exchange mechanism (2) for recovering the exhaust gas waste heat in the exhaust pipe (1), the heat exchange mechanism (2) includes a heat exchange shell (3) and a heat exchange part (4), the heat exchange part (4) is integrally formed with the heat exchange shell (3), and the heat exchange shell (3) is arranged on the pipe wall of the exhaust pipe (1).

2. The tail gas waste heat recovery device of claim 1, wherein: The heat exchange mechanism (2) further includes a heat exchange base (21), the heat exchange base (21) is arranged at the bottom of the heat exchange shell (3), the heat exchange part (4) is arranged on the heat exchange base (21), and the heat exchange base (21) is integrally formed with the heat exchange part (4) and the heat exchange shell (3).

3. The tail gas waste heat recovery device of claim 1, wherein: The pipe wall of the exhaust pipe (1) is provided with a mounting hole (5), and the outer edge of the heat exchange shell (3) is arranged on the mounting hole (5).

4. The tail gas waste heat recovery device of claim 2, wherein: The heat exchange shell (3) and the heat exchange base (21) form a heat exchange cavity (8), the heat exchange part (4) is located in the heat exchange cavity (8), the heat exchange part (4) divides the heat exchange cavity (8) into a first heat exchange cavity (9) and a second heat exchange cavity (10), a working medium flows in the first heat exchange cavity (9), and exhaust gas flows in the second heat exchange cavity (10), and the heat exchange part (4) is used for realizing heat exchange between the working medium and the exhaust gas.

5. The tail gas waste heat recovery device of claim 4, wherein: The heat exchange shell (3) is provided with a first inlet (11), a first outlet (12), a second inlet (13) and a second outlet (14), the first inlet (11) and the first outlet (12) are communicated with the first heat exchange cavity (9), and the second inlet (13) and the second outlet (14) are communicated with the second heat exchange cavity (10).

6. The tail gas waste heat recovery device of claim 5, wherein: The heat exchange shell (3) is provided with a first transition connecting part (22) and a second transition connecting part (23), the second inlet (13) is formed between one end of the heat exchange base (21) and the first transition connecting part (22), and the second outlet (14) is formed between the other end of the heat exchange base (21) and the second transition connecting part (23).

7. The tail gas waste heat recovery device of claim 4, wherein: The heat exchange cavity (8) includes a working medium communication cavity (15) and an exhaust gas communication cavity (16), the heat exchange part (4) includes a plurality of heat exchange walls (17) connected in series, exhaust gas flow channels (18) or working medium flow channels (19) are formed between adjacent two heat exchange walls (17), the working medium flow channels (19) are communicated through the working medium communication cavity (15) to form the first heat exchange cavity (9), and the exhaust gas flow channels (18) are communicated through the exhaust gas communication cavity (16) to form the second heat exchange cavity (10).

8. The tail gas waste heat recovery device of claim 7, wherein: The bottom of the working medium flow channel (19) is provided with a flow channel baffle (20), and the flow channel baffle (20) extends upward in the vertical direction in the working medium flow channel (19).

9. The tail gas waste heat recovery device of claim 1, wherein: The heat exchange mechanism (2) is located inside the exhaust pipe (1), or the heat exchange mechanism (2) is located outside the exhaust pipe (1), or the heat exchange mechanism (2) is partially located inside the exhaust pipe (1) and partially located outside the exhaust pipe (1).

10. A vehicle characterized by: The exhaust gas waste heat recovery device as claimed in any one of claims 1-9. The exhaust gas waste heat recovery device as claimed in any one of claims 1-9.

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