CN216554145U - Supporting structure for improving thermal fatigue resistance of EGR cooler - Google Patents
Supporting structure for improving thermal fatigue resistance of EGR cooler Download PDFInfo
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- CN216554145U CN216554145U CN202122570769.5U CN202122570769U CN216554145U CN 216554145 U CN216554145 U CN 216554145U CN 202122570769 U CN202122570769 U CN 202122570769U CN 216554145 U CN216554145 U CN 216554145U
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- heat exchange
- egr cooler
- fatigue resistance
- thermal fatigue
- supporting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Exhaust-Gas Circulating Devices (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a supporting structure for improving thermal fatigue resistance of an EGR (exhaust gas recirculation) cooler, which comprises two mounting plates, wherein a plurality of heat exchange units are arranged between the two mounting plates, the heat exchange units are composed of heat exchange cores, the heat exchange cores are overlapped to form one heat exchange unit, supporting plates are sleeved on the periphery of the heat exchange unit composed of the heat exchange cores at intervals, outer edge convex blocks are arranged at the top and the bottom of each supporting plate, a supporting block is sleeved on each outer edge convex block and attached to the outer surface of the heat exchange unit, a shell is arranged on the periphery of the two mounting plates, and the shell wraps the heat exchange units. The utility model can solve the problems that the heat fatigue resistant device of the existing EGR cooler occupies the space of the heat exchange unit, influences the heat exchange efficiency of the EGR cooler, has poor heat fatigue resistance and universality and causes the rise of the product cost.
Description
Technical Field
The utility model discloses a supporting structure for improving thermal fatigue resistance of an EGR cooler, and belongs to the technical field of internal combustion engines.
Background
The EGR technology is increasingly important on medium and heavy engines, and compared with light engines, the medium and heavy engines have large exhaust gas flow, and require a higher heat exchange amount of an EGR cooler, so that the volume of the cooler is greatly increased, an internal heat exchange unit is longer, and when the cooler works, the cooler is affected by fatigue thermal shock, so that the problems of cracking at welding joints of main boards at two ends and the end parts of the heat exchange unit, bending and breaking of the heat exchange unit and the like are easily caused, and the reliability of the EGR cooler is seriously affected.
At present, two more solutions are provided, one is to add a corrugated pipe at the air inlet end of the EGR cooler and compensate the thermal expansion of the heat exchange unit through the corrugated pipe; the other is that a corrugated structure is added on the tube shell of the cooler to eliminate the thermal stress generated by different thermal deformation amounts in the operation of the cooler through the corrugated structure on the tube shell; the disadvantages of both of these approaches are: the corrugated structure is increased, the space of the heat exchange unit is occupied, the heat exchange efficiency of the EGR cooler is influenced, a part is added when the corrugated pipe is added, the corrugated pipes with different pipe diameters and different corrugated parameters are required to be matched according to the structural size of a product, the universality of the part is poor, and the cost of the product is increased.
SUMMERY OF THE UTILITY MODEL
Therefore, the embodiment of the utility model provides a support structure for improving the thermal fatigue resistance of an EGR cooler, so as to solve the problems that the heat exchange efficiency of the EGR cooler is influenced, the thermal fatigue resistance is poor, the universality is poor and the product cost is increased due to the fact that the existing thermal fatigue resistance device of the EGR cooler occupies the space of a heat exchange unit.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: the supporting structure comprises two mounting plates, a plurality of heat exchange units are arranged between the two mounting plates, the heat exchange units are composed of heat exchange cores, the heat exchange units are overlapped to form one heat exchange unit, a supporting plate is arranged on a heat exchange unit peripheral spacer sleeve composed of the heat exchange cores, outer edge protruding blocks are arranged at the top and the bottom of the supporting plate, a supporting block is sleeved on each outer edge protruding block, the supporting blocks are attached to the outer surfaces of the heat exchange units, a shell is arranged on the periphery of the two mounting plates, and the shell wraps the heat exchange units.
Preferably, the housing consists of two small housings.
Preferably, the outer edge bump is assembled and welded with the shell.
Preferably, the number of the heat exchange units can be 4.
Preferably, the heat exchange unit is formed by stacking 4 heat exchange core bodies.
Preferably, the heat exchange core body is in a kidney-shaped outer part, the two mounting plates are provided with kidney-shaped round holes, two ends of the heat exchange core body are respectively penetrated in the kidney-shaped round holes of the mounting plates, the supporting plates are provided with kidney-shaped round holes, and the heat exchange core body penetrates through the supporting plates through the kidney-shaped round holes.
Preferably, the heat exchange core body is of a round, rectangular or flat structure.
Further preferably, when the heat exchange unit is formed by a rectangular or flat heat exchange core body, fins are arranged inside the heat exchange core body.
The utility model has at least the following advantages:
1. the utility model provides a structure for supporting an integral heat exchange core, which adopts a rigid body structure formed by connecting a supporting structure on the heat exchange core and a shell to play a role in supporting the heat exchange core, ensures the radial support of a heat exchange unit, can improve the thermal fatigue resistance of an EGR cooler, not only ensures the reliability of a product, but also simplifies the part structure of the EGR cooler and reduces the manufacturing cost, and is also an improvement on the external connection form of the original supporting structure and the shell;
2. the supporting plate, the supporting block and the shell form a rigid connector which is used as a supporting structure for resisting thermal fatigue, so that the axial deformation of the heat exchange unit is effectively restrained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, the proportions, the sizes, and the like shown in the specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical essence, and any modifications of the structures, changes of the proportion relation, or adjustments of the sizes, should still fall within the scope of the technical contents disclosed in the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic perspective view of a support structure for improving thermal fatigue resistance of an EGR cooler in accordance with the present invention;
FIG. 2 is a schematic view of the internal structure of FIG. 1;
FIG. 3 is a partial cross-sectional structural view of the internal structure of FIG. 1;
FIG. 4 is a schematic cross-sectional view of FIG. 1;
wherein: 1-mounting a plate; 2-a heat exchange unit; 3-a heat exchange core; 4-a support plate; 5-convex blocks on the outer edge; 6-a supporting block; 7-a housing; 8-small shell.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, the present invention provides a technical solution: a supporting structure for improving thermal fatigue resistance of an EGR cooler comprises two mounting plates 1, a plurality of heat exchange units 2 are arranged between the two mounting plates 1, the heat exchange units 2 are formed by combining round, rectangular or flat heat exchange cores 3, the number and the structural size of the heat exchange units 2 can be changed according to product requirements, the design and assembly requirements of the EGR coolers with different sizes are matched, the heat exchange cores 3 are overlapped to form one heat exchange unit 2, supporting plates 4 are sleeved on the peripheries of the heat exchange units 2 formed by the heat exchange cores 3 at intervals, the supporting plates 4 not only play a role in preventing radial deformation for the heat exchange units 2, but also effectively reduce axial deformation, outer edge convex blocks 5 are arranged at the top and the bottom of the supporting plates 4, a supporting block 6 is sleeved on each outer edge convex block 5, the supporting block 6 is attached to the outer surface of the heat exchange units 2, and a shell 7 is arranged on the peripheries of the two mounting plates 1, the shell 7 can be designed into different shapes and sizes according to product requirements to meet the product requirements of different coolers, the shell 7 wraps the plurality of heat exchange units 2, and the shell 7 is composed of two small shells 8;
in some embodiments, when the heat exchange unit 2 is formed by the rectangular or flat heat exchange core body 3, fins can be arranged inside the heat exchange unit, so that the heat transfer area is increased, and the heat exchange efficiency is improved;
the outer edge convex blocks 5 and the shell 7 are assembled and welded, so that the thermal fatigue resistance is improved;
in some embodiments, the number of the heat exchange units 2 may be 4;
in some embodiments, heat exchange unit 2 is formed by stacking 4 heat exchange cores 3;
in some embodiments, the heat exchanging core 3 is in a shape of a kidney-shaped circle, the two mounting plates 1 are provided with kidney-shaped round holes, two ends of the heat exchanging core 3 are respectively penetrated in the kidney-shaped round holes of the mounting plates 1 to realize mounting, the support plate 4 is provided with kidney-shaped round holes, and the heat exchanging core 3 penetrates through the support plate 4 through the kidney-shaped round holes.
Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (8)
1. A support structure for improving the thermal fatigue resistance of an EGR cooler is characterized by comprising two mounting plates (1), a plurality of heat exchange units (2) are arranged between the two mounting plates (1), the heat exchange units (2) are composed of heat exchange cores (3), the heat exchange cores (3) are overlapped to form a heat exchange unit (2), the periphery of the heat exchange unit (2) formed by the heat exchange cores (3) is sleeved with a support plate (4) at intervals, outer edge convex blocks (5) are arranged at the top and the bottom of the supporting plate (4), a supporting block (6) is sleeved on each outer edge convex block (5), the supporting block (6) is attached to the outer surface of the heat exchange units (2), a shell (7) is arranged on the periphery of the two mounting plates (1), and the shell (7) wraps the heat exchange units (2).
2. A support structure for improving the thermal fatigue resistance of an EGR cooler according to claim 1, characterized in that the housing (7) consists of two small housings (8).
3. The support structure for improving thermal fatigue resistance of an EGR cooler according to claim 1, wherein the outer edge bump (5) is fit-welded to the housing (7).
4. The support structure for improving thermal fatigue resistance of an EGR cooler according to claim 1, characterized in that said heat exchanging unit (2) can be provided in 4 number.
5. The support structure for improving thermal fatigue resistance of an EGR cooler according to claim 1, wherein said heat exchange unit (2) is formed by stacking 4 heat exchange cores (3).
6. The supporting structure for improving the thermal fatigue resistance of the EGR cooler according to claim 1, wherein the outer part of the heat exchanging core body (3) is in a shape of a waist circle, waist circular holes are formed in the two mounting plates (1), two ends of the heat exchanging core body (3) are respectively penetrated in the waist circular holes of the mounting plates (1), waist circular holes are formed in the supporting plates (4), and the heat exchanging core body (3) penetrates through the supporting plates (4) through the waist circular holes.
7. The support structure for improving the thermal fatigue resistance of an EGR cooler according to claim 1, characterized in that the heat exchange core (3) is of a circular, rectangular or flat structure.
8. The support structure for improving the thermal fatigue resistance of an EGR cooler according to claim 7, characterized in that when the heat exchange unit (2) is formed by a rectangular or flat heat exchange core (3), fins are arranged inside the heat exchange core (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570769.5U CN216554145U (en) | 2021-10-25 | 2021-10-25 | Supporting structure for improving thermal fatigue resistance of EGR cooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122570769.5U CN216554145U (en) | 2021-10-25 | 2021-10-25 | Supporting structure for improving thermal fatigue resistance of EGR cooler |
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| CN216554145U true CN216554145U (en) | 2022-05-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931766A (en) * | 2021-10-25 | 2022-01-14 | 北京美联桥科技集团有限公司 | Supporting structure for improving thermal fatigue resistance of EGR cooler |
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2021
- 2021-10-25 CN CN202122570769.5U patent/CN216554145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113931766A (en) * | 2021-10-25 | 2022-01-14 | 北京美联桥科技集团有限公司 | Supporting structure for improving thermal fatigue resistance of EGR cooler |
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