CN102900570B - U-shaped exhaust gas recirculation (EGR) cooler - Google Patents
U-shaped exhaust gas recirculation (EGR) cooler Download PDFInfo
- Publication number
- CN102900570B CN102900570B CN201210352521.4A CN201210352521A CN102900570B CN 102900570 B CN102900570 B CN 102900570B CN 201210352521 A CN201210352521 A CN 201210352521A CN 102900570 B CN102900570 B CN 102900570B
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- flat tube
- fishplate bar
- joining plate
- duplicate invoice
- main joining
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- 238000005304 joining Methods 0.000 claims description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- 230000008646 thermal stress Effects 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000007373 indentation Methods 0.000 abstract 2
- 230000008602 contraction Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 40
- 239000002912 waste gas Substances 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 5
- 230000008961 swelling Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000009184 walking Effects 0.000 description 1
- 239000002699 waste material Substances 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
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a U-shaped exhaust gas recirculation (EGR) cooler which comprises a first connecting flange, a first main connecting plate, a second main connecting plate, a first auxiliary connecting plate, a second auxiliary connecting plate, a casing, a gas-side end cover and a water-side end cover. At least two flat pipe assembly unit groups are arranged in the casing, through holes corresponding to a flat pipe and an inclined plane containing the periphery of all through holes and provided with an indentation are arranged on the first main connecting plate, and a front end face and a rear end face of the first main connecting plate are connected with a first connecting flange and the first auxiliary connecting plate respectively. A plurality of through holes corresponding to the flat pipe and provided with flanges and an inclined plane containing the periphery of all the through holes and provided with an indentation are arranged on the first auxiliary connecting plate. The first main connecting plate and the first auxiliary connecting plate connected with the flat pipe are bent to form the inclined faces, the inclined faces of the first main connecting plate and the first auxiliary connecting plate are matched with each other, the design of the inclined faces can effectively reduce thermal stress, cracking of the flat pipe due to unevenness of expansion with heat and contraction with cold can not occur, and the service life of products is prolonged.
Description
Technical field
The invention belongs to heat exchanger technical field, relate to a kind of U-shaped board-like cooler for recycled exhaust gas, it can be widely used on various automotive Diesel engines.
Background technique
Along with the increasingly stringent of emission request, EGR Technology is applied on power plant more and more, and various structure coolers for recycled exhaust gas produce in succession.Wherein, plate-fin structure cooler for recycled exhaust gas, because of its remarkable heat dispersion, is more applied.Arrangement requires more and more compacter, and therefore efficient U-shaped board-like cooler for recycled exhaust gas is more and more employed.
Conventional U-shaped plate-fin structure cooler for recycled exhaust gas, its gas side canal is by multiple flat tube assembly cell formations.The heat-exchange fin that single flat tube assembly unit is plugged by flat tube and its inside forms.The eyelet welding corresponding with two ends end plate of each flat tube assembly unit connects, and forms core assembly.The two ends end plate of core assembly again with housing, enter the welding such as (going out) air chamber and end cap.On housing, welding water inlet interface, water outlet mouthpiece, form cooler for recycled exhaust gas assembly.Like this, waste gas---waste gas flows to the circulation of flat tube assembly unit inside in a part of flat tube assembly unit, then flows out in another part flat tube assembly, forms U-shaped passage.Flat tube assembly unit outside and housing inner chamber circulation cooling liquid, absorb the heat of waste gas and taken away.
There is following shortcoming in the U-shaped plate and fin type cooler for recycled exhaust gas of this routine: when cooler for recycled exhaust gas operation, the flat tube assembly unit of housing and flat tube assembly unit and air inlet and the flat tube assembly unit of giving vent to anger, the degree of expanding with heat and contract with cold difference, thereby produce thermal stress at pipe and weld joint, near the pipe itself welding line joint of two end plates and flat tube assembly unit side portion or weld seam very easily ftractures.
Summary of the invention
What the present invention will solve is the above-mentioned defect that prior art exists, and the cooler for recycled exhaust gas that a kind of reliability is better is provided.
For solving the problems of the technologies described above, the present invention is by the following technical solutions: a kind of U-shaped cooler for recycled exhaust gas, comprise the first adpting flange, the first main joining plate, the second main joining plate, the first duplicate invoice fishplate bar, the second duplicate invoice fishplate bar, housing, gas side end cap and water side end cap, it is characterized in that:
On the first described adpting flange, be provided with cutoff board, the first described adpting flange is divided into air inlet side and the side of giving vent to anger;
On described housing, be respectively arranged with intake-outlet, described water intake with on water outlet, be connected respectively intake pipe and outlet pipe;
In described housing, be provided with at least two flat tube assembly unit groups, each flat tube assembly unit group is by stacked the forming of multiple flat tube assembly units, between the flat tube assembly unit of adjacent two layers and between flat tube assembly unit and housing, be provided with water side fin, the corrugated fin that each flat tube assembly unit is plugged by flat tube and its inside forms;
On the first described main joining plate, offer the through hole corresponding with described flat tube, the periphery that contains all through holes has the inclined-plane of indent, and the front/rear end of described the first main joining plate is connected with described the first adpting flange and the first duplicate invoice fishplate bar respectively; The first described duplicate invoice fishplate bar offers the corresponding flanged through hole of multiple with described flat tube, and the periphery that contains all through holes has the inclined-plane of indent; The inclined-plane of the indent on described the first main joining plate matches with the inclined-plane of the indent on described the first duplicate invoice fishplate bar;
On the second described main joining plate, offer the through hole corresponding with described flat tube, the front/rear end of described the second main joining plate is connected with the described gentle side end cap of the second duplicate invoice fishplate bar respectively; The second described duplicate invoice fishplate bar offers the corresponding flanged through hole of multiple with described flat tube; The front end of described flat tube is arranged on described the first duplicate invoice fishplate bar in the through hole on flanged through hole and described the first main joining plate, and the rear end of described flat tube is arranged on described the second duplicate invoice fishplate bar in the through hole on flanged through hole and described the second main joining plate.
The front end and back end of described housing is connected with described the first duplicate invoice fishplate bar and water side end cap.
U-shaped cooler for recycled exhaust gas of the present invention, the first adpting flange, the first main joining plate, cutoff board, flat tube assembly unit, the gentle side end cap of the second main joining plate have formed the gas side canal of U-shaped; The seal space of turnover water pipe, housing, the first duplicate invoice fishplate bar, the second duplicate invoice fishplate bar, flat tube, gas side end cap and water side end cap has formed cooling passage.Cooling liquid, by cooling passage, is carried out heat exchange with the waste gas in gas side canal, and chilled waste gas is discharged from waste gas outlet.
U-shaped cooler for recycled exhaust gas of the present invention, the the first main joining plate being connected with flat tube and the first duplicate invoice fishplate bar bending form inclined-plane, and the inclined-plane of the first main joining plate and the first duplicate invoice fishplate bar cooperatively interacts, this inclined design can reduce thermal stress effectively, welding line joint or near the pipe of weld seam of two end plates and flat tube assembly unit side portion can not produced because expanding with heat and contract with cold inequality cracking, the working life of having improved product.
Further improve again as of the present invention, within described cutoff board is inserted into flat tube, and be connected with the first described adpting flange, but do not fix with flat tube.
Further improve as of the present invention, reducing shaping can be carried out in described flat tube two ends again, and the width direction size of two ends oral area can be dwindled like this, thereby the overall dimensions of cooler can be dwindled, convenient layout.
Further improve as of the present invention, described water side fin is shift type fin, the fin of this form again, be axially the less direction of resistance, be laterally resistance compared with general orientation, but horizontal or can flow, Flow Field Distribution is more even, and can guide well the rear end of flow direction cooler.
Further improve as of the present invention again, offer a groove on described gas side end cap, cooling liquid can flow through from groove like this, makes the temperature of water side end cap be unlikely to too high.The upper and lower of described groove is semi circular surface, and described water side end cap also has a semi circular surface corresponding with it, can reduce the resistance of air-flow.Described gas side end cap just contacts with water side end cap, instead of connects, and can move like this at axial direction flat tube, reduces thermal stress.
Further improve as of the present invention, described housing is connected by the second adpting flange with the first duplicate invoice fishplate bar again.Because the first duplicate invoice fishplate bar is large by the area of contact of the second adpting flange, make to connect more reliable and stable.
Further improve as of the present invention, described housing is welded by left shell and right shell body, and the second described main joining plate is directly shelved on the housing of left and right, instead of is welded to connect, thereby the rear end of flat tube axially can move, and reduces thermal stress.
The present invention also will provide a kind of linkage structure of flat tube and joining plate of U-shaped cooler for recycled exhaust gas, comprise flat tube, the first main joining plate and the first duplicate invoice fishplate bar, it is characterized in that offering the through hole corresponding with described flat tube on the first described main joining plate, the periphery that contains all through holes has the inclined-plane of indent, and the ear end face of described the first main joining plate is connected with the first described duplicate invoice fishplate bar; The first described duplicate invoice fishplate bar offers the corresponding flanged through hole of multiple with described flat tube, and the periphery that contains all through holes has the inclined-plane of indent; One end of described flat tube is placed on described the first duplicate invoice fishplate bar in flanged through hole.
Brief description of the drawings
Fig. 1 is cooler for recycled exhaust gas general structure schematic diagram of the present invention.
Fig. 2 is cooler for recycled exhaust gas general structure explosive view of the present invention.
Fig. 3 is the cross-sectional view of the axial plane along turnover water pipe of cooler for recycled exhaust gas of the present invention.
Fig. 4 is cooler for recycled exhaust gas general structure sectional view of the present invention.
Fig. 5 is the local enlarged diagram at A place in Fig. 4.
Fig. 6 is cooler for recycled exhaust gas gas side of the present invention and water side runner schematic diagram.
Fig. 7 is the structural representation of the first main joining plate 2.
Fig. 8 is the structural representation of the first duplicate invoice fishplate bar 3.
Fig. 9 is the structural representation of cutoff board.
Figure 10 is the structural representation of flat tube.
Figure 11 is the structural representation of gas side end cap.
Figure 12 is the structural representation of water side end cap.
Figure 13 is the structural representation of water side fin.
Figure 14 is that the B-B of Figure 13 is to amplification view.
Figure 15 is the structural representation of the second duplicate invoice fishplate bar.
Figure 16 is the structural representation of the second main joining plate.
In figure, 1-the first adpting flange, the main joining plate of 2-first, 3-the first duplicate invoice fishplate bar, 4-the second adpting flange, 5-cutoff board, 6-housing, 7-housing, 8-outlet pipe, 9-intake pipe, 10-flat tube assembly unit, 11-the second duplicate invoice fishplate bar, the main joining plate of 12-second, 13-gas is surveyed end cap, 14-water side end cap, 15-water side fin, the flat-sided pipe assembly unit of 16-air inlet group, the 17-flat-sided pipe assembly unit group of giving vent to anger, 101-flat tube, 102-corrugated fin, the two ends of 103-flat tube, the plate body of 201-the first main joining plate, the through hole of 202-the first main joining plate, the inclined-plane of 203-the first main joining plate, the plate body of 301-the first duplicate invoice fishplate bar, the flange of 302-the first duplicate invoice fishplate bar, the guide grab of 303-the first duplicate invoice fishplate bar, the inclined-plane of 304-the first duplicate invoice fishplate bar, the through hole of 305-the first duplicate invoice fishplate bar, the end face of 501-cutoff board, the pin of 502-cutoff board, the folding ear of 503-cutoff board, the plate body of 1101-the second duplicate invoice fishplate bar, the flange of 1102-the second duplicate invoice fishplate bar, the guide grab of 1103-the second duplicate invoice fishplate bar, the through hole of 1105-the second duplicate invoice fishplate bar, the plate body of 1201-the second main joining plate, the through hole of 1202-the second main joining plate, a-groove, b-semi circular surface, c-semi circular surface, D-water inlet, E-water outlet, F-air inlet, G-gives vent to anger.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the present invention is described further.
With reference to accompanying drawing, the U-shaped cooler for recycled exhaust gas of one of the present invention, comprises the first adpting flange 1, the second adpting flange 4, the first main joining plate 2, the second main joining plate 12, the first duplicate invoice fishplate bar 3, the second duplicate invoice fishplate bar 11, left shell 6, right shell body 7, gas side end cap 13 and water side end cap 14.
On the first described adpting flange 1, be provided with cutoff board 5, the first described adpting flange 1 is divided into air inlet side and the side of giving vent to anger.
Housing 6,7 tops, described left and right are respectively arranged with intake-outlet, described water intake with on water outlet, be connected respectively intake pipe 9 and outlet pipe 8, described left and right housing 6,7 and the outside bulging of turnover water pipe 9,8 corresponding sidepiece.
In described left and right housing 6,7, be provided with two flat tube assembly unit groups, each flat tube assembly unit group is by stacked the forming of multiple flat tube assembly units 10, between the flat tube assembly unit 10 of adjacent two layers and flat tube assembly unit 10 and housing 6, between 7, be provided with water side fin 15, described water side fin 15 is shift type fin.The corrugated fin 102 that each flat tube assembly unit 10 is plugged by flat tube 101 and its inside forms.The two ends draw of described flat tube 101, thus the overall dimensions of cooler can be dwindled, convenient layout.
On the plate body 201 of the first described main joining plate 2, offer the through hole 202 corresponding with described flat tube 101, the periphery that contains all through holes has the inclined-plane 203 of indent, and the front/rear end of described the first main joining plate 2 is connected with described the first adpting flange 1 and the first duplicate invoice fishplate bar 3 respectively.The plate body 301 of the first described duplicate invoice fishplate bar 3 offers the through hole 305 of the corresponding flanged pin of multiple with described flat tube 101 302, and the periphery that contains all through holes has the inclined-plane 304 of indent; On described each flange 302, be also provided with multiple guide grabs 303, bootable flat tube 101 enters in through hole 305; The inclined-plane 203 of the indent on described the first main joining plate 2 matches with the inclined-plane 304 of the indent on described the first duplicate invoice fishplate bar 3.
On the plate body 1201 of the second described main joining plate 12, offer the through hole corresponding with described flat tube 101 1202, the front/rear end of described the second main joining plate 12 is connected with the described gentle side end cap 13 of the second duplicate invoice fishplate bar 11 respectively; The plate body 1101 of the second described duplicate invoice fishplate bar 11 offers the through hole 1105 of the corresponding flanged pin of multiple with described flat tube 101 1102, and described flange 1102 is provided with multiple guide grabs 1103; The front end of described flat tube 101 is arranged on described the first duplicate invoice fishplate bar 3 in the through hole 202 on flanged through hole 305 and described the first main joining plate 2, and the rear end of described flat tube 101 is arranged on described the second duplicate invoice fishplate bar 11 in the through hole 1202 on flanged through hole 1105 and described the second main joining plate 12.
The front end of described left and right housing 6,7 is connected with the first described duplicate invoice fishplate bar 3 by the second adpting flange 4, and rear end is connected with water side end cap 14.
Described cutoff board 5 is section bar, bi-side are provided with multiple pins 502, within each pin 502 is inserted into respectively corresponding flat tube 101, cutoff board 5 end faces 501 are stuck on the first main joining plate 2, and cutoff board 5 is connected with the first described adpting flange 1 by a doubling ear 503 at two ends simultaneously.
On described gas side end cap 13, offer a groove a, cooling liquid can flow through from groove like this, makes the temperature of water side end cap be unlikely to too high.The upper and lower of groove a is semi circular surface b, and described water side end cap 14 also has a semi circular surface c corresponding with it, and described gas side end cap just contacts with water side end cap, instead of connects, and can move like this at axial direction flat tube, reduces thermal stress.
U-shaped cooler for recycled exhaust gas of the present invention, the first adpting flange 1, cutoff board 5, the first main joining plate 2, the second main joining plate 12, the gentle side end cap 13 of flat tube assembly unit 10 have formed the gas side canal of U-shaped; The seal space of intake pipe 8, outlet pipe 9, left shell 6, right shell body 7, the first duplicate invoice fishplate bar 3, the second duplicate invoice fishplate bar 11, flat tube 101, gas side end cap 13 and water side end cap 14 has formed cooling passage.Cooling liquid, by cooling passage, is carried out heat exchange with the waste gas in gas side canal, and chilled waste gas is discharged from the outlet of giving vent to anger.
With reference to Fig. 6, gas side runner of the present invention is: gas enters from the air inlet side of the first adpting flange 1 in the flat tube of the flat-sided pipe assembly unit of air inlet group 16 on right side, arrive gas side end cap 13 rear turnbacks, enter left side and give vent to anger in flat-sided pipe assembly unit group 17 flat tubes, finally go out from the effluent of giving vent to anger of the first adpting flange 1.
Water side runner of the present invention is: water enters the swelling part of right shell body 7 from intake pipe 9, is divided into three tunnel walkings: the first via, through the backward upper top to left shell 6 of swelling part of each floor water side fin 15, left shell 6, finally flows out from outlet pipe 8.After advancing before the second road direction, the swelling part through each layer of water side fin 15, left shell 6 is backward above to the top of left shell 6 again, finally flows out from outlet pipe 8.Third Road is again through each layer of water side fin 15 after advancing backward, and partial reflux, to the backward upper top to left shell 6 of swelling part of left shell 6, flows out from outlet pipe 8; Another part is back to the backward upper top to left shell 6 of swelling part of left shell 6 through water side end cap 14, finally flow out from outlet pipe 8.
Multiple flat tube assembly unit groups also can be set in left and right of the present invention housing 6,7, and the quantity of flat tube assembly unit group is even number conventionally, and a part is wherein as the flat-sided pipe assembly unit of air inlet group, and another part is as the flat-sided pipe assembly unit group of giving vent to anger.
Should be understood that: above-described embodiment is just to explanation of the present invention, instead of limitation of the present invention, and any innovation and creation that do not exceed within the scope of connotation of the present invention, within all falling into protection scope of the present invention.
Claims (10)
1. a U-shaped cooler for recycled exhaust gas, comprise the first adpting flange (1), the first main joining plate (2), the second main joining plate (12), the first duplicate invoice fishplate bar (3), the second duplicate invoice fishplate bar (11), housing (6,7), gas side end cap (13) and water side end cap (14), it is characterized in that:
On described the first adpting flange (1), be provided with cutoff board (5), described the first adpting flange (1) is divided into air inlet side and the side of giving vent to anger;
On described housing (6,7), be respectively arranged with intake-outlet, described water intake with on water outlet, be connected respectively intake pipe (9) and outlet pipe (8);
Described housing (6,7) in, be provided with at least two flat tube assembly unit groups, each flat tube assembly unit group is by stacked the forming of multiple flat tube assembly units (10), between the flat tube assembly unit (10) of adjacent two layers and flat tube assembly unit (10) and housing (6,7) between, be provided with water side fin (15), the corrugated fin (102) that each flat tube assembly unit (10) is plugged by flat tube (101) and its inside forms;
On the first described main joining plate (2), offer the through hole (202) corresponding with described flat tube (101), the periphery that contains all through holes has the inclined-plane of indent (203), and the front/rear end of described the first main joining plate (2) is connected with described the first adpting flange (1) and the first duplicate invoice fishplate bar (3) respectively; The first described duplicate invoice fishplate bar (3) offers the through hole (305) of the corresponding flanged pin (302) of multiple with described flat tube (101), and the periphery that contains all through holes has the inclined-plane of indent (304); The inclined-plane (203) of the indent on described the first main joining plate (2) matches with the inclined-plane (304) of the indent on described the first duplicate invoice fishplate bar (3);
On the second described main joining plate (12), offer the through hole (1202) corresponding with described flat tube (101), the front/rear end of described the second main joining plate (12) is connected with the second described gentle side end cap of duplicate invoice fishplate bar (11) (13) respectively; The second described duplicate invoice fishplate bar (11) offers the through hole (1105) of the corresponding flanged pin (1102) of multiple with described flat tube (101);
The front end of described flat tube (101) is arranged in the through hole (202) on the upper flanged through hole (305) of described the first duplicate invoice fishplate bar (3) and described the first main joining plate (2), and the rear end of described flat tube (101) is arranged in the through hole (1202) on the upper flanged through hole (1105) of described the second duplicate invoice fishplate bar (11) and described the second main joining plate (12);
The front end and back end of described housing (6,7) is connected with described the first duplicate invoice fishplate bar (3) and water side end cap (14).
2. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, is characterized in that described intake pipe (9) and outlet pipe (8) are placed in the top of described housing (6,7), the corresponding outside bulging of sidepiece of described housing (6,7).
3. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, within it is characterized in that described cutoff board (5) is inserted into flat tube (101), and is connected with described the first adpting flange (1).
4. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, the two ends draw of the flat tube (101) described in it is characterized in that.
5. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, is characterized in that described water side fin (15) is shift type fin.
6. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, is characterized in that offering a groove (a) on described gas side end cap (13), and the outer surface of described gas side end cap (13) coordinates with the internal surface of described water side end cap (14).
7. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 6, is characterized in that the upper and lower of described gas side end cap (13) groove (a) is semi circular surface (b), and described water side end cap (14) also has a semi circular surface corresponding with it (c).
8. the U-shaped cooler for recycled exhaust gas of one as claimed in claim 1, is characterized in that described housing (6,7) is connected by the second adpting flange (4) with the first duplicate invoice fishplate bar (3).
9. as the one U-shaped cooler for recycled exhaust gas of claim 1-8 as described in any one, it is characterized in that described housing (6,7) is welded by left shell (6) and right shell body (7).
10. the flat tube of a U-shaped cooler for recycled exhaust gas and the linkage structure of joining plate, comprise flat tube (101), the first main joining plate (2) and the first duplicate invoice fishplate bar (3), it is characterized in that offering the through hole (202) corresponding with described flat tube (101) on the first described main joining plate (2), the periphery that contains all through holes has the inclined-plane of indent (203), and the ear end face of described the first main joining plate (2) is connected with the first described duplicate invoice fishplate bar (3); The first described duplicate invoice fishplate bar (3) offers the through hole (305) of the corresponding flanged pin (302) of multiple with described flat tube (101), and the periphery that contains all through holes has the inclined-plane of indent (304); The inclined-plane (203) of the indent on described the first main joining plate (2) matches with the inclined-plane (304) of the indent on described the first duplicate invoice fishplate bar (3); One end of described flat tube (101) is placed in the through hole (202) on the upper flanged through hole of described the first duplicate invoice fishplate bar (3) and described the first main joining plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352521.4A CN102900570B (en) | 2012-09-20 | 2012-09-20 | U-shaped exhaust gas recirculation (EGR) cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352521.4A CN102900570B (en) | 2012-09-20 | 2012-09-20 | U-shaped exhaust gas recirculation (EGR) cooler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102900570A CN102900570A (en) | 2013-01-30 |
| CN102900570B true CN102900570B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210352521.4A Active CN102900570B (en) | 2012-09-20 | 2012-09-20 | U-shaped exhaust gas recirculation (EGR) cooler |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3267138B1 (en) * | 2015-03-02 | 2019-02-06 | Denso Corporation | Heat exchanger |
| CN109488491A (en) * | 2017-09-11 | 2019-03-19 | 上海汽车集团股份有限公司 | A kind of engine and its cooler for recycled exhaust gas |
| KR102463201B1 (en) * | 2017-12-13 | 2022-11-03 | 현대자동차 주식회사 | Water-cooled egr cooler |
| KR20200006779A (en) * | 2018-07-11 | 2020-01-21 | 현대자동차주식회사 | Exhaust gas recirculation cooler |
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Also Published As
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|---|---|
| CN102900570A (en) | 2013-01-30 |
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Denomination of invention: A U-type EGR cooler Effective date of registration: 20210610 Granted publication date: 20141112 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |
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Date of cancellation: 20220627 Granted publication date: 20141112 Pledgee: Bank of China Limited by Share Ltd. Tiantai County branch Pledgor: ZHEJIANG YINLUN MACHINERY Co.,Ltd. Registration number: Y2021330000510 |