CN220566163U - Supporting structure of EGR cooler - Google Patents
Supporting structure of EGR cooler Download PDFInfo
- Publication number
- CN220566163U CN220566163U CN202322247335.0U CN202322247335U CN220566163U CN 220566163 U CN220566163 U CN 220566163U CN 202322247335 U CN202322247335 U CN 202322247335U CN 220566163 U CN220566163 U CN 220566163U
- Authority
- CN
- China
- Prior art keywords
- connecting plate
- shell
- tube shell
- egr cooler
- welded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006073 displacement reaction Methods 0.000 claims abstract description 32
- 230000003139 buffering effect Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000005219 brazing Methods 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The application discloses supporting structure of EGR cooler relates to the field of engine, can solve among the prior art the tube shell of EGR cooler and receive the influence of thermal expansion displacement and lead to the problem of tube shell tearing. The EGR cooler comprises an air inlet joint connected to an exhaust pipe of an engine, a tube shell connected to the air inlet joint and an air outlet pipe connected to the other end of the tube shell, wherein the supporting structure comprises a first connecting plate welded to the tube shell, a second connecting plate welded to the exhaust pipe of the engine, and a displacement compensation plate connected between the first connecting plate and the second connecting plate, the first connecting plate, the second connecting plate and the displacement compensation plate are integrated, the thickness of the integrated is greater than that of the outer wall of the tube shell, and the displacement compensation plate is bent to form an arc-shaped bulge for buffering deformation of the integrated.
Description
Technical Field
The present application relates to the field of engines, and in particular to a support structure for an EGR cooler.
Background
The EGR cooler is used as a key emission control technology of the automobile engine, and aims to reduce the emission of nitrogen oxides (NOx), improve the combustion efficiency, improve the emission of harmful gases generated in the combustion process, reduce the oil consumption, and have wide application prospects in the fields of automobile industry, environmental protection and the like.
The EGR cooler includes an air intake fitting, a cartridge, and an outlet duct. The air inlet joint is connected to the exhaust pipe of the engine, high-temperature exhaust gas is guided into the pipe shell, efficient heat exchange pipe cores are arranged in the pipe shell, and through the pipe cores, the exhaust gas and a cooling medium are subjected to heat exchange, so that the temperature of the exhaust gas is reduced, and an air outlet pipe connected to the other end of the pipe shell discharges the cooled exhaust gas out of the system. Wherein, the shell is provided with a water inlet pipe and a water outlet pipe to realize the flow of cooling medium. Meanwhile, the supporting plate is used as a connecting piece to connect the pipe shell and the engine exhaust pipe together in a welding way, so that structural support is provided for the whole EGR cooler.
However, the design and performance of the support plate has a significant impact on the stable operation of the EGR cooler. In the operation of the engine, the high temperature gas (300-800 ℃) in the exhaust pipe makes the exhaust pipe easily generate a thermal expansion position, and the thermal expansion displacement of the exhaust pipe can lead to deformation displacement of the supporting plate. Deformation displacement of the supporting plate is transferred to the pipe shell, and because the wall thickness of the pipe shell is thinner (for better heat dissipation and cost control), the structural strength of the wall of the pipe shell is smaller, the deformation of the supporting plate possibly causes the tearing of the pipe shell, and then the cooler leaks water, so that the risk of cylinder pulling of the engine is seriously caused.
Disclosure of Invention
Therefore, the application provides a supporting structure of an EGR cooler, so as to solve the problem that a tube shell of the EGR cooler in the prior art is easily affected by thermal expansion displacement to cause the tearing of the tube shell.
In order to achieve the above object, the present application provides the following technical solutions:
the utility model provides a bearing structure of EGR cooler, the EGR cooler including connect in the air inlet joint of the blast pipe of engine, connect in the shell of air inlet joint with connect in the outlet duct of the other end of shell, bearing structure including weld in the first connecting plate of shell, weld in the second connecting plate of the blast pipe of engine, connect in first connecting plate with displacement compensation board between the second connecting plate, first connecting plate second connecting plate with displacement compensation board is an organic whole piece, the thickness of an organic whole piece is greater than the outer wall thickness of shell, displacement compensation board buckling is formed with and is used for buffering the arc arch of the deformation of an organic whole piece.
Preferably, two sides of the first connecting plate are bent to form first folded edges, and the two first folded edges are welded to the other two opposite side walls of the tube shell respectively.
Preferably, a third connecting plate is further connected between the first connecting plate and the tube shell, the third connecting plate is in welded connection with the first connecting plate, the third connecting plate is in welded connection with the tube shell, second folded edges matched with the first folded edges are formed on two sides of the third connecting plate in a bending mode, and the two second folded edges are welded to two other opposite side walls of the tube shell respectively.
Preferably, the thickness of the first connecting plate is 3mm, the thickness of the third connecting plate is 1.5mm, and the wall thickness of the tube shell is 1.5mm.
Preferably, the first connecting plate and the third connecting plate, and the third connecting plate and the tube shell are all connected by brazing.
Preferably, the first connecting plate, the second connecting plate and the third connecting plate are all provided with a plurality of process holes for filling brazing filler metal.
The application has the following advantages:
the high-temperature gas of the exhaust pipe of the engine enables the exhaust pipe to generate thermal expansion displacement, the thermal expansion displacement leads the integral part to generate deformation displacement, the displacement compensation plate of the integral part is provided with arc-shaped bulges, the arc-shaped bulges are abrupt changes in the geometric shape formed at the position of the displacement compensation plate of the integral part, when the integral part is stressed wholly, the stress distribution of the arc-shaped bulge areas is relatively concentrated, the integral part is easier to generate obvious deformation (or bending or stretching) at the arc-shaped bulges, the integral displacement is reduced, especially the displacement at the position of the first connecting plate is reduced, and thus, the problem that the first connecting plate is torn to the pipe wall of the pipe shell is avoided, and finally the pipe shell is torn is avoided.
Drawings
For a more visual illustration of the prior art and the present application, several exemplary drawings are presented below. It should be understood that the specific shape and configuration shown in the drawings should not be considered in general as limiting upon the practice of the present application; for example, based on the technical concepts and exemplary drawings disclosed herein, those skilled in the art have the ability to easily make conventional adjustments or further optimizations for the add/subtract/assign division, specific shapes, positional relationships, connection modes, dimensional scaling relationships, etc. of certain units (components).
FIG. 1 is a schematic view of the overall structure of a support structure for an EGR cooler according to one embodiment of the present application;
FIG. 2 is a schematic view of the overall structure of a support structure of an EGR cooler according to another embodiment of the present application;
FIG. 3 is a schematic view of the overall structure of a support structure of an EGR cooler according to another embodiment of the present application;
FIG. 4 is an exploded view of FIG. 1;
FIG. 5 is a schematic structural view of a support structure for an EGR cooler according to one embodiment of the present disclosure;
fig. 6 is a schematic structural view of a support structure of an EGR cooler according to another embodiment of the present application.
Reference numerals illustrate:
1. an air inlet joint; 2. a tube shell; 3. an air outlet pipe; 4. a support structure; 41. a first connection plate; 411. a first hem; 42. a second connecting plate; 43. a displacement compensation plate; 431. arc-shaped bulges; 44. a process hole; 5. a third connecting plate; 51. and a second flanging.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In the description of the present application: the terms "inner", "outer" refer to the inner and outer of the respective component profiles; the terms "first," "second," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements but may include other steps or elements not expressly listed but inherent to such process, method, article, or apparatus or adding steps or elements based on further optimization of the inventive concept.
Referring to fig. 1-6, the application discloses a supporting structure of an EGR cooler, the EGR cooler includes an air inlet joint 1 connected to an exhaust pipe of an engine, a tube shell 2 connected to the air inlet joint 1, and an air outlet pipe 3 connected to the other end of the tube shell 2, the supporting structure 4 includes a first connecting plate 41 welded to the tube shell 2, a second connecting plate 42 welded to the exhaust pipe of the engine, a displacement compensation plate 43 connected between the first connecting plate 41 and the second connecting plate 42, the first connecting plate 41, the second connecting plate 42 and the displacement compensation plate 43 are integrated, the thickness of the integrated is greater than the thickness of the outer wall of the tube shell 2, and the displacement compensation plate 43 is bent to form an arc-shaped protrusion 431 for buffering deformation of the integrated.
The high temperature gas in the exhaust pipe (not shown in the figure) of the engine causes the exhaust pipe to generate thermal expansion displacement, the thermal expansion displacement leads to deformation displacement of the integral part, the displacement compensation plate 43 of the integral part is provided with an arc-shaped bulge 431, the arc-shaped bulge 431 is an abrupt change of the geometric shape formed by the integral part at the position of the displacement compensation plate 43, when the integral part is stressed wholly, the stress distribution of the arc-shaped bulge 431 is relatively concentrated, the integral part is easier to generate obvious deformation (or bending or stretching) at the position of the arc-shaped bulge 431, the integral displacement is reduced, particularly the displacement at the position of the first connecting plate 41 is reduced, so that the tearing of the first connecting plate 41 to the pipe wall of the pipe shell 2 can be avoided, and finally the problem of tearing of the pipe shell 2 is avoided.
It should be further noted that the direction of the arc-shaped protrusion 431 is not limited; and the connection between the arc-shaped protrusion 431 and the rest is also arc-shaped transition, so that the stress is prevented from being too concentrated, and the arc-shaped protrusion 431 is broken at the connection.
The heat exchange tube core in the tube shell 2 is in the prior art, and the description is omitted herein.
Referring to fig. 1, 4 and 5, the first connecting plate 41 is bent at both sides thereof to form first folded edges 411, and the two first folded edges 411 are welded to the other two opposite side walls of the package 2, respectively.
The contact area between the first connecting plate 41 and the outer wall of the tube housing 2 is increased by the two first folded edges 411, so that the connection strength between the first connecting plate 41 and the tube housing 2 can be increased, the stress is dispersed due to the increase of the contact area, and the problem that the tube housing 2 is torn due to the stress concentration is further avoided.
Referring to fig. 3 and 6, in some other embodiments, both sides of the first connecting plate 41 may not be folded to form a hem.
A third connecting plate 5 is further connected between the first connecting plate 41 and the tube shell 2, the third connecting plate 5 is connected with the first connecting plate 41 in a welded mode, the third connecting plate 5 is connected with the tube shell 2 in a welded mode, two sides of the third connecting plate 5 are bent to form second folded edges 51 matched with the first folded edges 411, and the two second folded edges 51 are welded to two other opposite side walls of the tube shell 2 respectively.
Referring to fig. 2, a third connecting plate 5 is added, and the transition buffer of the third connecting plate 5 increases the structural strength of the tube shell 2.
In some other embodiments, the first connection plate 41 may be used alone without adding the third connection plate 5.
The thickness of the first connection plate 41 is 3mm, the thickness of the third connection plate 5 is 1.5mm, and the wall thickness of the envelope 2 is 1.5mm.
The first connecting plate 41 and the third connecting plate 5 and the tube shell 2 are all connected by brazing. The brazing has lower welding temperature, and during welding, the influence of welding high temperature on the integrated part and the tube shell 2 can be avoided.
Referring to fig. 5 and 6, the first, second and third connection plates 41, 42 and 5 are each provided with a plurality of process holes 44 for filling with solder. In order to uniformly attach and weld the welding surface, solder can be smeared in the process holes 44, and during welding, the solder is melted and then uniformly filled along the gaps of the attaching surface, so that the welding quality is improved.
Wherein the plurality of process holes 44 are uniformly distributed.
Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.
The foregoing has outlined and detailed description of the present application in terms of the general description and embodiments. It should be appreciated that numerous conventional modifications and further innovations may be made to these specific embodiments, based on the technical concepts of the present application; but such conventional modifications and further innovations may be made without departing from the technical spirit of the present application, and such conventional modifications and further innovations are also intended to fall within the scope of the claims of the present application.
Claims (6)
1. The utility model provides a bearing structure of EGR cooler, the EGR cooler including connect in the air inlet joint of the blast pipe of engine, connect in the shell of air inlet joint with connect in the outlet duct of the other end of shell, its characterized in that, bearing structure including weld in the first connecting plate of shell, weld in the second connecting plate of the blast pipe of engine, connect in first connecting plate with displacement compensation board between the second connecting plate, first connecting plate second connecting plate with displacement compensation board is an organic whole piece, the thickness of an organic whole piece is greater than the outer wall thickness of shell, displacement compensation board is buckled and is formed with the arc arch that is used for buffering the deformation of an organic whole piece.
2. The support structure of claim 1, wherein the first web is folded on both sides to form a first fold, and wherein two of the first folds are welded to two other opposing side walls of the cartridge.
3. The support structure according to claim 2, wherein a third connecting plate is further connected between the first connecting plate and the tube shell, the third connecting plate is welded to the first connecting plate, the third connecting plate is welded to the tube shell, two sides of the third connecting plate are bent to form second folded edges matched with the first folded edges, and two second folded edges are welded to two other opposite side walls of the tube shell respectively.
4. A support structure according to claim 3, wherein the thickness of the first web is 3mm, the thickness of the third web is 1.5mm, and the wall thickness of the cartridge is 1.5mm.
5. A support structure according to claim 3, wherein the first and third connection plates and the third connection plate and the envelope are each connected by brazing.
6. The support structure of claim 5, wherein the first, second and third connection plates are each provided with a plurality of process holes for filling with solder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322247335.0U CN220566163U (en) | 2023-08-21 | 2023-08-21 | Supporting structure of EGR cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322247335.0U CN220566163U (en) | 2023-08-21 | 2023-08-21 | Supporting structure of EGR cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566163U true CN220566163U (en) | 2024-03-08 |
Family
ID=90101978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322247335.0U Active CN220566163U (en) | 2023-08-21 | 2023-08-21 | Supporting structure of EGR cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566163U (en) |
-
2023
- 2023-08-21 CN CN202322247335.0U patent/CN220566163U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10240876B2 (en) | Heat exchanger | |
| US9127895B2 (en) | Heat exchanger | |
| US8002022B2 (en) | Heat exchanger, in particular exhaust gas heat exchanger for motor vehicles | |
| US7143824B2 (en) | Heat exchanger, in particular charge-air cooler | |
| US8393382B2 (en) | Heat exchanger with telescoping expansion joint | |
| CN101960113A (en) | Exhaust manifold of an internal combustion engine | |
| US7389810B2 (en) | Displacement prevention device for the side plate of a heat exchanger | |
| KR101856770B1 (en) | Heat exchanger for cooling the exhaust gas in motor vehicles and method for producing the heat exchanger | |
| JP2012519827A (en) | Heat exchanger with cast housing and method for making the same | |
| CN101576029B (en) | Exhaust gas recirculation cooler for medium and heavy-duty vehicle with ridge ring | |
| CN109387110B (en) | Heat exchange tube structure and modularized cooler for eliminating thermal expansion and contraction damage effects | |
| CN220566163U (en) | Supporting structure of EGR cooler | |
| JP4345470B2 (en) | Engine EGR cooler | |
| CN201420626Y (en) | Waste gas recirculation cooler with ridge rings for medium and heavy vehicles | |
| US9067289B2 (en) | Heat exchanger with telescoping expansion joint | |
| CN209386876U (en) | A kind of heat exchange tube structure and modularization cooler for eliminating the damage effect that expands with heat and contract with cold | |
| KR100716449B1 (en) | Recycle apparatus for exhaust gas and water-cooling type intercooler's dimple plate tube and making method | |
| US20160363380A1 (en) | Heat exchanger | |
| GB2344161A (en) | Exhaust gas cooler | |
| JP4525989B2 (en) | EGR gas cooling device | |
| CN101514877A (en) | Exhaust gas recirculation cooler used for medium and heavy-duty automobiles | |
| JP2007064515A (en) | Flat heat transfer tube for heat exchanger, and its manufacturing method | |
| JP2000241086A (en) | Egr gas cooler and its manufacture | |
| CN210343540U (en) | Cooler body of EGR system | |
| CN213745400U (en) | Gas circuit connection structure and engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |