CN202611933U - Plate-fin type exhaust gas recirculation (EGR) cooler with heat insulation function - Google Patents
Plate-fin type exhaust gas recirculation (EGR) cooler with heat insulation function Download PDFInfo
- Publication number
- CN202611933U CN202611933U CN2012201091057U CN201220109105U CN202611933U CN 202611933 U CN202611933 U CN 202611933U CN 2012201091057 U CN2012201091057 U CN 2012201091057U CN 201220109105 U CN201220109105 U CN 201220109105U CN 202611933 U CN202611933 U CN 202611933U
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- China
- Prior art keywords
- mainboard
- plate
- exhaust gas
- heat insulating
- flat tube
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- Withdrawn - After Issue
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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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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a plate-fin type exhaust gas recirculation (EGR) cooler with a heat insulation function. An air-in flange and an air-out chamber are arranged on two ends of a shell. Portions of the shell, close to the air-in flange and the air-out chamber, are respectively provided with a water inlet pipe and a water outlet pipe. A heat-dissipation core assembly, an air chamber and a corrugated tube are arranged inside the shell, a main plate on one end of the heat-dissipation core assembly is connected with the shell and the air-out chamber, a main plate on the other end of the heat-dissipation core assembly is connected with one end of the air chamber, the other end of the air chamber is connected with one end of the corrugated tube, and the other end of the corrugated tube is connected with the shell and the air-in flange. A heat insulation tube communicated with the air-in flange is arranged inside the corrugated tube. The main plate on the other end of the heat-dissipation core assembly is flexibly connected to the shell through the air chamber and the corrugated tube, axial deformation generated by a flat tube assembly unit is transmitted to the corrugated tube through the air chamber and absorbed by the corrugated tube, and therefore axial thermal stress because the flat tube assembly unit is heated and deformed is eliminated.
Description
Technical field
The utility model relates to motor exhaust cooling technology field; Relate in particular to a kind of board-like cooler for recycled exhaust gas of use for diesel engine corrugated tube type; Specifically a kind of plate and fin type cooler for recycled exhaust gas with heat insulating function, it can be widely used on the various automotive Diesel engines.
Background technique
Along with the increasingly stringent of emission request, EGR Technology is applied on the power plant more and more, and various structure coolers for recycled exhaust gas produce in succession.Wherein, the plate-fin structure cooler for recycled exhaust gas because of its remarkable heat dispersion, obtains more applications.
The increasingly stringent of Abgasgesetz, EGR is led constantly to be increased, and promptly needs cooler for recycled exhaust gas waste gas cooled flow constantly to increase, and a lot of EGR are arranged on before the turbine, i.e. high pressure EGR, this makes the EGT that gets into cooler for recycled exhaust gas reach 700 ℃-800 ℃.
Conventional plate-fin structure cooler for recycled exhaust gas is like disclosed a kind of cooler for recycled exhaust gas of Chinese patent CN2009201173214 and heat radiation turbulent flow fin thereof.With reference to Figure 11, Figure 12 and Figure 13; This cooler for recycled exhaust gas comprises import tracheae 1 ', inlet plenum 2 ', fuse assembly 5 ', outlet chamber 6 ' and the outlet tracheae 7 ' that connects successively; Described fuse assembly 5 ' comprises the turbulent fin of heat radiation 11 ', cooling flat tube 10 ', connects mainboard 9 ', frame 4 ', import water pipe 3 ' and outlet water pipe 8 '; A plurality of cooling flat tube 10 ' stacked arrangement are in frame 4 '; The punching internal fixation of offering on the corresponding connection mainboard 9 ' is inserted at two ends, and with described inlet plenum 2 ' and outlet chamber's 6 ' conducting, be equipped with the turbulent fin 11 ' of heat radiation in each cooling flat tube 10 '; Described a pair of connection mainboard 9 ' is separately fixed at frame 4 ' two ends, and described import water pipe 3 is arranged on the described frame 4 with outlet water pipe 8.
The cooler for recycled exhaust gas of said structure, its gas side canal is made up of a plurality of flat tube assembly units.Single flat tube assembly unit is made up of the heat-exchange fin 11 ' that flat tube 10 ' and its inside plug.Each flat tube assembly unit connects with 9 ' the corresponding eyelet welding of two ends mainboard, constitutes core assembly.The two ends mainboard 9 ' of core assembly welds with outlet chamber 6 ' with frame 4 ' and inlet plenum 2 ' again.Frame 4 ' is gone up welding import water pipe 3 ' and outlet water pipe 8 ', constitutes the cooler for recycled exhaust gas assembly.Like this, flat tube assembly unit inside circulation waste gas, the flat tube assembly unit outside and frame 4 ' inner chamber circulation cooling water, the heat of absorbing waste gas is also taken away it.
There is following shortcoming in the plate and fin type cooler for recycled exhaust gas of this routine: when 1, cooler for recycled exhaust gas moved, the mainboard of the back blast cooler for recycled exhaust gas of high temperature, mainboard self expanded and produce stress; When 2, cooler for recycled exhaust gas moved, housing was different with the degree of expanding with heat and contract with cold of flat tube assembly unit, formed axial stress.More than the stress of 2 generations very easily cause the soldered place cracking of two ends mainboard and flat tube assembly unit side portion.
Summary of the invention
What the utility model will solve is the problems referred to above that existing technology exists, and aims to provide the better cooler for recycled exhaust gas of a kind of radiating effect and reliability.
For addressing the above problem; The utility model adopts following technological scheme: a kind of plate and fin type cooler for recycled exhaust gas with heat insulating function; Comprise housing; Described housing two ends are provided with inlet flange and discharge chamber, are provided with intake pipe and outlet pipe respectively near described inlet flange and discharge chamber place on the described housing, are provided with radiating core sub-component, air chamber and bellows in the described housing; Flat tube assembly unit and water side fin that described radiating core sub-component comprises the mainboard at two ends and is arranged alternately; Each flat tube assembly unit pack is drawn together flat tube and the heat-exchange fin that its inside plugs, and it is characterized in that the mainboard of said radiating core sub-component one end links to each other with discharge chamber with described housing, and the other end mainboard links to each other with an end of said air chamber; The other end of said air chamber links to each other with an end of said bellows, and the other end of said bellows links to each other with inlet flange with said housing; Be provided with heat insulating tube in the described bellows with described inlet flange UNICOM.
The plate and fin type cooler for recycled exhaust gas with heat insulating function of the utility model; Constitute the gas side canal by inlet flange, heat insulating tube inboard, air chamber, flat tube inboard and discharge chamber, constitute the water side canal by intake pipe, outlet pipe, the bellows outside, the air chamber outside, water side fin and housing inner chamber.The exhaust flow that motor is discharged is through the gas side canal, in the radiating core sub-component, carries out heat exchange with cooling water through the water side canal, and its heat water that is cooled absorbs and takes away, thereby reaches cooling effect.
The plate and fin type cooler for recycled exhaust gas with heat insulating function of the utility model, an end mainboard of radiating core sub-component directly is connected with housing, and the other end mainboard is flexibly connected on the housing through air chamber and bellows.Because the other end mainboard is not direct and housing is rigidly connected; The axial deformation that the flat tube assembly unit produces can be through the other end mainboard moving in housing; Make distortion be delivered to the bellows place through air chamber; And, so just eliminated the axial thermal stress that produces because of the temperature distortion of flat tube assembly unit by the bellows absorption.
As the further improvement of the utility model, the end of described the other end mainboard also is provided with thermal baffle, and described thermal baffle offers the perforation with said flat tube UNICOM.Because the existence of thermal baffle can directly not impact on the mainboard high-temp waste gas, so the surface temperature of mainboard will reduce greatly, promptly reduced the stress that mainboard produces because of self thermal expansion greatly.Described thermal baffle adopts high temperature resistant, corrosion-resistant material, an end and mainboard welding, and the other end is unfixing, and thermal baffle is free to discharge because of the thermal distortion that thermal expansion produces like this.
As further improving again of the utility model, an end of said thermal baffle links to each other with described the other end mainboard, and the other end of said thermal baffle is a free end.
As further improving again of the utility model, the inner side surface of said flow-stopping plate is wave structure.
As further improving again of the utility model, outwards protrude corresponding to the position of the other end mainboard on the said housing, form two flow channels, the downstream part of said two flow channels is provided with a pair of flow-stopping plate.This structure has obviously been improved water effluent field, and making has sufficient current to cool off the soldered between mainboard and flat tube assembly unit and the mainboard here, can further reduce the temperature of air inlet side mainboard and reduce mainboard and the thermal stress of flat tube assembly unit.
As further improving again of the utility model, an end of described heat insulating tube is fixedly connected with inlet flange with described bellows, and the other end contacts with described bellows through the boss of its outer surface.This structure, heat insulating tube can connect bellows and locate effectively on the one hand; Fixing because its inner only contacts with bellows on the other hand; Thereby can not place restrictions on the axial motion of bellows; When the flat tube assembly unit receives thermogenetic axial deformation; Bellows can freely move axially, the axial stress on the mainboard of transmission, absorption and elimination flat tube assembly unit.Described heat insulating tube free end also can adopt bulge loop or bell-mouthed form with contacting of bellows, also can produce identical technique effect.
As further improving again of the utility model; The mainboard inboard at said radiating core sub-component two ends also is respectively equipped with a secondary mainboard; Offer the perforation that the described flat tube of some confessions passes through on the plate body of said each secondary mainboard, the periphery of said each perforation is provided with and the vertical flange in said plate body plane.Because mainboard and flat tube joint are rectangular, therefore the easy stress that forms in welding back is concentrated, thereby causes weld cracking.After adding secondary mainboard, the perforation on flat tube and the secondary mainboard and the attachment portion of flange can increase the fusion length of flat tube, and the stress of weld seam is disperseed, thereby play the effect of protection flat tube.
As further improving again of the utility model, the inner side surface of said flow-stopping plate is wave structure, and the flat tube profile of this wave structure and radiating core sub-component is complementary, and makes the flow channel at this place keep unimpeded.
As the improvement further of the utility model, also be provided with some square boss on the described housing, these square boss can increase the intensity of housing.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the schematic perspective view of the plate and fin type cooler for recycled exhaust gas with heat insulating function of the utility model.
Fig. 2 is the inlet end structural representation of the utility model.
Fig. 3 is the outlet side structural representation of the utility model.
Fig. 4 is that the A-A of Fig. 2 is to sectional drawing.
Fig. 5 is the structural representation of heat insulating tube.
Fig. 6 is the structural representation of thermal baffle.
Fig. 7 is the structural representation of mainboard.
Fig. 8 is the structural representation of secondary mainboard.
Fig. 9 is the structural representation of flow-stopping plate.
Figure 10 is the schematic representation of the utility model gas side and water side media flow.
Figure 11 is existing cooler for recycled exhaust gas assembly structure schematic representation.
Figure 12 is existing cooler for recycled exhaust gas core structures schematic representation.
Figure 13 is existing EGR cooling flat tube modular construction schematic representation.
Among the figure: the 1-discharge chamber; The 2-outlet pipe; The 3-housing; The 4-housing; The 5-outlet pipe; The 6-intake pipe; The 7-inlet flange; 8-flat tube assembly unit; The 9-flow-stopping plate; The 10-thermal baffle; The 11-air chamber; The 12-bellows; The 13-heat insulating tube; The secondary mainboard of 14-; The 15-mainboard; The 16-boss; 17-water side fin; The 18-square boss; The 19-flow channel; The 20-air-flow path; Perforation on the 22-thermal baffle; Perforation on the 23-mainboard; Perforation on the secondary mainboard of 24-; The inner side surface of 25-flow-stopping plate; Outside convex portion on the 26-housing 3; The 27-mainboard; The secondary mainboard of 28-; Outside convex portion on the 29-housing 4; 30-mainboard plate body; 31-mainboard housing; The 32-gas chamber outer wall; 33-air chamber inwall; The 34-flow channel; The 35-flow channel; The plate body of the secondary mainboard of 36-; The flange of the secondary mainboard of 37-; The outer side surface of 38-flow-stopping plate.
Embodiment
Referring to figs. 1 through Fig. 9, a kind of plate and fin type cooler for recycled exhaust gas of the utility model with heat insulating function, housing 3,4 before and after comprising, described housing 3,4 two ends are provided with inlet flange 7 and discharge chamber 1.Be provided with water intake and drain opening respectively near described inlet flange 7 and discharge chamber 1 place on the described housing 3,4, be connected intake pipe 6 and outlet pipe 2 on described water intake and the drain opening respectively.Be provided with radiating core sub-component, air chamber 11 and bellows 12 in the described housing 3,4.
Described radiating core sub-component comprises the mainboard 15 and 27 at two ends, the secondary mainboard 14 and 28 that mainboard is inboard, and two groups of flat tube assembly units 8 up and down.Each flat tube assembly unit 8 comprises the heat-exchange fin that flat tube and its inside plug, and flat tube assembly unit 8 is provided with in pairs up and down, respectively is provided with a water side fin 17 between adjacent two pairs of flat tube assembly units 8.With reference to Fig. 6, offer the perforation 24 that the described flat tube of some confessions passes through on the plate body 36 of said each secondary mainboard 14,28, the periphery of said each perforation 24 is provided with and the vertical flange 37 in said plate body 36 planes.With reference to Fig. 7, the plate body 30 in the middle of described mainboard 15,27 comprises and the housing 31 of periphery offer perforation 23 on the said plate body 30.Flat tube assembly unit 8 is plugged in the perforation 23 of said mainboard after passing flange 37 and the perforation 24 on the said secondary mainboard, and integral solder forms radiating core sub-component assembly.
The housing 31 of said radiating core sub-component left end mainboard 27 and described housing 3,4 and discharge chamber 1 welding; The housing 31 of right-hand member mainboard 15 and 32 welding of the outer wall of said air chamber 11 left ends; The inwall 33 of said air chamber 11 right-hand members welds with the outer wall of said bellows 12 left ends, said bellows 12 right-hand members and said housing 3,4 and inlet flange 7 welding.Be provided with heat insulating tube 13 in the described bellows 12 with described inlet flange 7 UNICOMs.The right-hand member welding of the right-hand member of described heat insulating tube 13 and described bellows 12, left end contacts with the inwall of described bellows 12 through the boss 16 of its outer surface.
Outwards protrude position 26,29 corresponding to right-hand member mainboard 15 on the said housing 3,4, forms two flow channels 34,35, and the downstream part of said two flow channels is provided with a pair of flow-stopping plate 9.The outer side surface 38 of said flow-stopping plate 9 is arc surface, and with the welding of the internal surface of described housing 3,4; The inner side surface 25 of flow-stopping plate 9 is wave structure, and the flat tube profile of this wave structure and radiating core sub-component is complementary, and makes the flow channel at this place keep unimpeded.Flow-stopping plate 9 can obviously improve water effluent field; Making has sufficient current to cool off the soldered between mainboard 15 and flat tube assembly unit 8 and the mainboard 15 here, can further reduce the temperature of air inlet side mainboard 15 and reduce mainboard 15 and the thermal stress of flat tube assembly unit 8.
With reference to Figure 10; The plate and fin type cooler for recycled exhaust gas of the utility model; The work path of its gas side is following: the waste gas that motor is discharged gets into heat insulating tube 13 inboards from inlet flange 7, and the flat tube of the perforation 22 back entering radiating core sub-components on flow through air chamber 11 and the thermal baffle 10 is inboard.Here the cooling waters with water side fin 17 zone carry out heat exchange, and its heat water that is cooled absorbs and takes away, thereby reaches cooling effect; Waste gas after the cooling is discharged (shown in the solid line arrow) from discharge chamber.
The work path of the water side of the utility model is following: cooling water gets into the inner chamber of housing 3,4 from intake pipe; The flow through flow channel 34 and 35 in bellows 12 outsides, air chamber 11 outsides, mainboard 15 outsides;, flow-stopping plate 9 returns after being stopped; Then walk around water side fin 17 zones between the flat tube that flow-stopping plate 9 gets into the radiating core sub-components again, the high-temp waste gas inboard with flat tube carries out heat exchange, with its heat absorption and take away; Cooling water after the heating flows out (shown in dotted arrow) from outlet pipe.
What should be understood that is: the foregoing description is just to the explanation of the utility model, rather than to the restriction of the utility model, any model utility that does not exceed in the utility model connotation scope is created, and all falls within the protection domain of the utility model.
Claims (8)
1. plate and fin type cooler for recycled exhaust gas with heat insulating function; Comprise housing (3,4); Described housing (3,4) two ends are provided with inlet flange (7) and discharge chamber (1); Described housing (3,4) is gone up and is located to be provided with respectively intake pipe (6) and outlet pipe (2) near described inlet flange (7) and discharge chamber (1); Be provided with radiating core sub-component, air chamber (11) and bellows (12) in the described housing (3,4); Described radiating core sub-component comprises mainboard (15,27) and the flat tube assembly unit (8) that is arranged alternately and the water side fin (17) at two ends; Each flat tube assembly unit (8) comprises the heat-exchange fin that flat tube and its inside plug, and it is characterized in that the mainboard (27) of said radiating core sub-component one end links to each other with discharge chamber (1) with described housing (3,4), and the other end mainboard (15) links to each other with an end of said air chamber (11); The other end of said air chamber (11) links to each other with an end of said bellows (12), and the other end of said bellows (12) links to each other with inlet flange (7) with said housing (3,4); Be provided with heat insulating tube (13) in the described bellows (12) with described inlet flange (7) UNICOM.
2. a kind of plate and fin type cooler for recycled exhaust gas as claimed in claim 1 with heat insulating function; The end that it is characterized in that described the other end mainboard (15) also is provided with thermal baffle (10), offers the perforation (22) with said flat tube UNICOM on the described thermal baffle (10).
3. a kind of plate and fin type cooler for recycled exhaust gas with heat insulating function as claimed in claim 2 is characterized in that an end of said thermal baffle (10) links to each other with described the other end mainboard (15), and the other end of said thermal baffle (10) is a free end.
4. a kind of plate and fin type cooler for recycled exhaust gas as claimed in claim 1 with heat insulating function; It is characterized in that said housing (3,4) upward outwards protrudes corresponding to the position (26,29) of the other end mainboard (15); Form two flow channels (34,35), the downstream part of said two flow channels is provided with a pair of flow-stopping plate (9).
5. a kind of plate and fin type cooler for recycled exhaust gas as claimed in claim 1 with heat insulating function; An end that it is characterized in that described heat insulating tube (13) is fixedly connected with inlet flange (7) with described bellows (12), and the other end contacts with described bellows (12) through the boss (16) of its outer surface.
6. a kind of plate and fin type cooler for recycled exhaust gas as claimed in claim 1 with heat insulating function; Mainboard (15, the 27) inboard that it is characterized in that said radiating core sub-component two ends also is respectively equipped with a secondary mainboard (14,28); Offer the perforation (24) that the described flat tube of some confessions passes through on the plate body (36) of said each secondary mainboard (14,28), the periphery of said each perforation (24) is provided with the flange (37) vertical with said plate body (36) plane.
7. a kind of plate and fin type cooler for recycled exhaust gas with heat insulating function as claimed in claim 4 is characterized in that the inner side surface (25) of said flow-stopping plate (9) is wave structure.
8. like any one described a kind of plate and fin type cooler for recycled exhaust gas of claim 1-7, it is characterized in that also being provided with some square boss (18) on the described housing (3,4) with heat insulating function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201091057U CN202611933U (en) | 2012-03-21 | 2012-03-21 | Plate-fin type exhaust gas recirculation (EGR) cooler with heat insulation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201091057U CN202611933U (en) | 2012-03-21 | 2012-03-21 | Plate-fin type exhaust gas recirculation (EGR) cooler with heat insulation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611933U true CN202611933U (en) | 2012-12-19 |
Family
ID=47345639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201091057U Withdrawn - After Issue CN202611933U (en) | 2012-03-21 | 2012-03-21 | Plate-fin type exhaust gas recirculation (EGR) cooler with heat insulation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611933U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619648A (en) * | 2012-03-21 | 2012-08-01 | 浙江银轮机械股份有限公司 | Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function |
| US11486337B2 (en) | 2019-09-06 | 2022-11-01 | Deere & Company | Integrated exhaust system apparatus |
-
2012
- 2012-03-21 CN CN2012201091057U patent/CN202611933U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102619648A (en) * | 2012-03-21 | 2012-08-01 | 浙江银轮机械股份有限公司 | Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function |
| CN102619648B (en) * | 2012-03-21 | 2014-06-04 | 浙江银轮机械股份有限公司 | Plate-fin EGR (Exhaust Gas Recirculation) cooler with heat insulation function |
| US11486337B2 (en) | 2019-09-06 | 2022-11-01 | Deere & Company | Integrated exhaust system apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121219 Effective date of abandoning: 20140604 |
|
| RGAV | Abandon patent right to avoid regrant |