EGR cooler capable of discharging water in multiple branches

Abstract

The utility model discloses a multi-path branch water outlet EGR cooler, and belongs to the technical field of automobile parts. The technical problem of how to improve the pipeline integration level of the EGR cooler is solved. According to the technical scheme, the heat exchanger is characterized by comprising a heat exchange body, the heat exchange body comprises a cooling chamber, an air chamber, a shell and a partition body, the two ends of the heat exchange body are fixedly connected with an air inlet end cover and an air outlet end cover respectively, and a water inlet pipe and a water outlet pipe are fixed to the shell and communicate with the cooling chamber; the water inlet pipe is located on the bottom face of the shell, the water outlet pipe is located on the top face of the shell, a plurality of branch pipes are arranged on the pipe wall of the water outlet pipe, each branch pipe comprises a bridge pipe, an auxiliary pipe and a small pipe, the water outlet pipe and the auxiliary pipes are communicated through a bridge pipe frame, and limiting pieces are fixed to the auxiliary pipes and fixed to the side face of the shell. The device has the effects that the connection modes provided by the pipelines are diversified, and the integration degree is high.

Description

Technical Field

[0001] The present application relates to the technical field of automobile accessories, and in particular to an EGR cooler with multi-branch water outlets. Background Art

[0002] Currently, an EGR cooler is a device used to reduce emissions from a diesel engine, and its core function is to reduce the temperature of EGR (Exhaust Gas Recirculation) gas.

[0003] Working principle: After the exhaust gas enters the EGR cooler, it exchanges heat with the coolant through the heat dissipation pipe wall in the cooler. The coolant is cooled by the cooling device, taking away the heat and lowering the exhaust gas temperature. The cooled exhaust gas is mixed with fresh air and enters the combustion chamber, lowering the combustion temperature and reducing the formation of NOx.

[0004] The existing EGR cooler mainly includes a heat exchange body, on which are arranged a plurality of air chambers (connected to the exhaust gas discharge and circulation interfaces for heat exchange of the exhaust gas), and a plurality of cooling chambers (connected to the cooling circulation pipeline, which contains coolant, generally water, for reducing the exhaust gas temperature), thereby completing the heat exchange in the heat exchange body. A plurality of pipelines are installed on the heat exchange body, and improper connection of these pipelines may easily cause leakage of gas or liquid, and the pipelines are complex and diverse, which brings inconvenience to the installers, especially in the case of some narrow installation spaces in automobiles, where the assembly joints are very inconvenient and reduce the disassembly and assembly efficiency.

[0005] The technical problem that needs to be solved is: how to improve the pipeline integration of the EGR cooler so as to provide reliable and convenient disassembly and assembly needs. Utility Model Content

[0006] In view of the above-mentioned shortcomings (problems) of the prior art, in order to improve the pipeline integration of the EGR cooler so as to provide reliable and convenient disassembly and assembly requirements, the present application provides an EGR cooler with multi-branch water outlets.

[0007] To achieve the above-mentioned purpose and other related purposes, the present application adopts the following technical scheme: an EGR cooler with multi-way branch water outlet, comprising a heat exchange main body, the heat exchange main body comprising a cooling chamber, an air chamber, a shell, and a separator, a plurality of separators are arranged in the shell and divide the internal space into a cooling chamber and an air chamber, an air inlet end cover and an air outlet end cover are fixedly connected at both ends of the heat exchange main body, a water inlet pipe and a water outlet pipe are fixed on the shell, both the water inlet pipe and the water outlet pipe are connected to the cooling chamber, the shell is square, the water inlet pipe is on the bottom surface of the shell, the water outlet pipe is on the top surface of the shell, a plurality of branch pipes are arranged on the pipe wall of the water outlet pipe, the branch pipes comprise a bridge pipe, a sub-pipe, and a small pipe, the water outlet pipe and the sub-pipe are connected by a bridge pipe frame, a limiting plate is fixed on the sub-pipe, and the limiting plate is fixed on the side of the shell.

[0008] Preferably, the bridge pipe is installed in a horizontal state, and an inclined pipe is arranged in the middle of the bridge pipe tilted upward.

[0009] Preferably, the auxiliary pipe comprises a vertical portion and an oblique upper portion, and the oblique upper portion and the horizontal portion of the water outlet pipe form an acute angle in the projection direction.

[0010] Preferably, the small tube is arranged to be connected below the horizontal portion of the water outlet pipe, and a small branch pipe is further arranged on the pipe.

[0011] Preferably, a mounting base is also fixed to the side of the shell, and the mounting base includes three support plate parts, three arm parts and a seat part. One of the three support plate parts is fixed to the bottom of the shell, and the other two are fixed to the sides of the shell and are located on both sides of the base part. Each support plate part is integrally connected to the base part through the arm part, and a mounting hole is provided on the base part.

[0012] Preferably, both the air inlet end cover and the air outlet end cover are provided with support ribs, and the support ribs are provided with through holes.

[0013] Preferably, an air pressure detection port is also provided on the air outlet cover.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] 1. Compared with the existing EGR cooler, the heat exchange main body is integrated with the water inlet pipe and the water outlet pipe, and the bridge pipe, the auxiliary pipe, and the small pipe. According to its designed position, after the heat exchange main body is installed horizontally, the coolant enters from the water inlet pipe, fills at least the entire cooling chamber from the bottom, and then overflows to different pipes. First, there is a bridge pipe in the middle of the outlet pipe, so when the water level reaches this point, it will be sent to the auxiliary pipe through the bridge pipe. The function of the auxiliary pipe is to divert and balance the water level. During the heat exchange process, the coolant (water body) and hot water will move upward more actively, and cold water will be continuously replenished from the bottom. Through diversion, the coolant forms different temperatures, and the water temperature coming out of different branch pipes will be different, so it is easy to distinguish and use. The design of the bridge pipe uses the height difference to achieve the effect of diverting the water out;

[0016] 2. This structure has a high degree of integration, which avoids the need for users to disassemble and assemble the pipeline. Users can directly connect or plug the pipeline outlet as needed. It is widely applicable to the environment and has strong versatility.

[0017] 3. It can greatly improve the assembly efficiency. The pipe mouth can be directly sealed by the hose sleeve, and the integrity is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application;

[0019] Figure 2 This application Figure 1 Side view of

[0020] Figure 3 is a side view of another perspective of the embodiment of the present application;

[0021] Figure 4 yes Figure 3 Section view at AA.

[0022] Description of main reference numerals:

[0023] 1. Heat exchange body; 11. Cooling chamber; 12. Air chamber; 13. Shell; 14. Separator; 2. Air inlet cover; 21. Support ribs; 22. Through hole; 3. Air outlet cover; 31. Air pressure detection port; 4. Water inlet pipe; 5. Water outlet pipe; 6. Bridge pipe; 61. Oblique pipe; 7. Auxiliary pipe; 71. Vertical part; 72. Oblique upper part; 8. Small pipe; 81. Small branch pipe; 9. Limiting piece; 10. Mounting seat; 101. Support plate part; 102. Arm part; 103. Seat part; 104. Mounting hole. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The illustrations only show the components related to the present application rather than being drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] The following is combined with Figure 1-4 The specific implementation methods of this application are further described.

[0027] Example:

[0028] The present application embodiment discloses an EGR cooler with multiple branch water outlets, referring to Figure 1 and Figure 2As shown, the heat exchange body 1 includes a cooling chamber 11, an air chamber 12, a shell 13, and a separator 14. A plurality of separators 14 are arranged in the shell 13 and divide the internal space into the cooling chamber 11 and the air chamber 12. Here, the cooling chamber 11 is used to store coolant, and the coolant is generally water. The two ends of the heat exchange body 1 are respectively fixedly connected with an air inlet end cover 2 and an air outlet end cover 3. The shell 13 is fixed with an inlet pipe 4 and an outlet pipe 5. The inlet pipe 4 and the outlet pipe 5 are both connected with the cooling chamber 11. The shell 13 is square. The inlet pipe 4 is located at the bottom surface of the shell 13, and the outlet pipe 5 is located at the top surface of the shell 13. Multiple branch pipes are arranged on the pipe wall of the outlet pipe 5. The branch pipes include a bridge pipe 6, a sub-pipe 7, and a small pipe 8. The outlet pipe 5 and the sub-pipe 7 are connected by a bridge pipe 6. A limit plate 9 is fixed on the sub-pipe 7, and the limit plate 9 is fixed on the side of the shell 13.

[0029] The connection between the housing 13 and the water inlet pipe 4 and the water outlet pipe 5 is formed into one piece by welding, thereby avoiding disassembly and assembly, and disassembly and assembly are directly performed at the port of the pipe fitting. This design can make it have a strong integrity at the connection, without gaps, more durable, and less prone to cracks. At the same time, disassembly and assembly can be performed at the port of the pipe fitting, which is also more convenient and can meet user needs.

[0030] In the design of the above scheme, the water inlet pipe 4 and the water outlet pipe 5 are integrated on the heat exchange main body 1, and the bridge pipe 6, the auxiliary pipe 7, and the small pipe 8 are integrated. According to the designed position, after the heat exchange main body 1 is installed horizontally, the coolant enters from the water inlet pipe 4, fills at least the entire cooling chamber 11 from the bottom, and then overflows to different pipelines. First, there is a bridge pipe 6 in the middle of the outlet pipe, so when the water level reaches this point, it will be sent to the auxiliary pipe 7 through the bridge pipe 6. The function of the auxiliary pipe 7 is to divert and balance the water level. During the heat exchange process, the coolant (water body) and hot water will move upward more actively, and the cold water will be continuously replenished from the bottom. Through diversion, the coolant forms different temperatures, and the water temperature coming out of different branch pipes will be different, so that it is easy to distinguish and use. The design of the bridge pipe 6 uses the height difference to achieve the effect of diverting the water. This structure has a high degree of integration, which avoids the user's disassembly and assembly of the pipeline. It can directly connect or block the pipeline outlet according to the needs. It is widely applicable to the environment and has strong versatility. The assembly efficiency can be greatly improved, the pipe mouth can be directly sealed by the hose sleeve, and the integrity is strong.

[0031] Further, the bridge pipe 6 is installed in a horizontal state, and an inclined pipe 61 is arranged obliquely upward in the middle of the bridge pipe 6. The inclined pipe 61 is obliquely upward, so that the water outlet here can be adjusted according to the water pressure and water level.

[0032] Furthermore, in order to allow the auxiliary pipe 7 to be diverted, the auxiliary pipe 7 includes a vertical portion 71 and an inclined upper portion 72, and the inclined upper portion 72 and the horizontal portion of the outlet pipe 5 form an acute angle in the projection direction. When the water flows to the auxiliary pipe 7, it can be recycled and can be circulated separately.

[0033] On the other hand, in order to increase the utilization of different water temperatures, the small tube 8 is arranged below the horizontal portion of the water outlet pipe 5, and the pipe is further provided with a small branch pipe 81. In this way, water at different water levels can be guided to perform different recycling.

[0034] In order to maintain Figure 1 In the installation state shown, a mounting base 10 is also fixed to the side of the housing 13, and the mounting base 10 includes three support plate parts 101, three arm parts 102 and a seat part 103. One of the three support plate parts 101 is fixed to the bottom of the housing 13, and the other two are fixed to the side of the housing 13 and are located on both sides of the base part 103. Each support plate part 101 is integrally connected to the base part 103 through the arm part 102, and the base part 103 is provided with a mounting hole 104. The use of the mounting base 10 can greatly improve the installation reliability and stability of the housing 13, and prevent the housing 13 from shaking, which affects the connection reliability of the pipeline.

[0035] In order to further improve the stability of installation, the air inlet cover 2 and the air outlet cover 3 are both provided with support ribs 21, and the support ribs 21 are provided with through holes 22. This can provide effective support, and generally the through holes 22 here are used for bolt fixing, that is, fixing it on the car.

[0036] Finally, in order to facilitate the detection of air pressure or temperature, an air pressure detection port 31 is also provided on the air outlet cover 3. Of course, this can also be used to detect temperature, and a temperature sensor can be installed to detect the internal temperature. If an air pressure sensor is installed here, the air pressure can be detected.

[0037] The above embodiments are only illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An EGR cooler with multi-way branch water outlet, comprising a heat exchange body (1), the heat exchange body (1) comprising a cooling chamber (11), an air chamber (12), a shell (13), and a separator (14), a plurality of separators (14) are arranged in the shell (13) and divide the internal space into the cooling chamber (11) and the air chamber (12), the two ends of the heat exchange body (1) are respectively fixedly connected with an air inlet end cover (2) and an air outlet end cover (3), characterized in that: A water inlet pipe (4) and a water outlet pipe (5) are fixed on the shell (13), and both the water inlet pipe (4) and the water outlet pipe (5) are connected to the cooling chamber (11). The shell (13) is square, the water inlet pipe (4) is located on the bottom surface of the shell (13), and the water outlet pipe (5) is located on the top surface of the shell (13). A plurality of branch pipes are arranged on the pipe wall of the water outlet pipe (5), and the branch pipes include a bridge pipe (6), an auxiliary pipe (7), and a small pipe (8). The water outlet pipe (5) and the auxiliary pipe (7) are connected to each other through the bridge pipe (6). A limit plate (9) is fixed on the auxiliary pipe (7), and the limit plate (9) is fixed on the side of the shell (13).

2. The EGR cooler with multi-way branch water outlet according to claim 1, characterized in that: The bridge pipe (6) is installed in a horizontal state, and an inclined pipe (61) is arranged in the middle of the bridge pipe (6) in an inclined manner upward.

3. The EGR cooler with multi-branch water outlet according to claim 1, characterized in that: The auxiliary pipe (7) comprises a vertical portion (71) and an oblique upper portion (72), and the oblique upper portion (72) and the horizontal portion of the water outlet pipe (5) form an acute angle in the projection direction.

4. The EGR cooler with multi-branch water outlet according to claim 3, characterized in that: The small tube (8) is arranged to be connected to the lower part of the horizontal part of the water outlet pipe (5), and a small branch pipe (81) is also arranged on the pipe.

5. The EGR cooler with multi-branch water outlet according to claim 1, characterized in that: A mounting seat (10) is also fixed on the side of the shell (13), and the mounting seat (10) comprises three support plate portions (101), three arm portions (102) and a seat portion (103), one of the three support plate portions (101) being fixed to the bottom of the shell (13), and the other two being fixed to the side of the shell (13) and being located on both sides of the base portion (103), each support plate portion (101) being integrally connected to the base portion (103) via the arm portion (102), and a mounting hole (104) being provided on the base portion (103).

6. The EGR cooler with multi-branch water outlet according to claim 1, characterized in that: The air inlet end cover (2) and the air outlet end cover (3) are both provided with support ribs (21), and the support ribs (21) are provided with through holes (22).

7. The EGR cooler with multi-branch water outlet according to claim 6, characterized in that: The air outlet cover (3) is also provided with an air pressure detection port (31).

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