CN100501295C - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
CN100501295C
CN100501295C CNB200380109185XA CN200380109185A CN100501295C CN 100501295 C CN100501295 C CN 100501295C CN B200380109185X A CNB200380109185X A CN B200380109185XA CN 200380109185 A CN200380109185 A CN 200380109185A CN 100501295 C CN100501295 C CN 100501295C
Authority
CN
China
Prior art keywords
heat exchanger
characterized
flow passages
3a
shell
Prior art date
Application number
CNB200380109185XA
Other languages
Chinese (zh)
Other versions
CN1742189A (en
Inventor
延斯·里希特
Original Assignee
贝洱两合公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE10302948.6 priority Critical
Priority to DE2003102948 priority patent/DE10302948A1/en
Application filed by 贝洱两合公司 filed Critical 贝洱两合公司
Publication of CN1742189A publication Critical patent/CN1742189A/en
Application granted granted Critical
Publication of CN100501295C publication Critical patent/CN100501295C/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0025Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by zig-zag bend plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0082Charged air coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001Recuperative heat exchangers
    • F28D21/0003Recuperative heat exchangers the heat being recuperated from exhaust gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00Closure means, e.g. end caps on header boxes or plugs on conduits

Abstract

The invention relates to a heat exchanger, especially a charge air cooler or exhaust gas cooler for motor vehicles, comprising flow ducts for a gas that is to be cooled and a coolant, said flow ducts being arranged in a housing . The flow ducts for the gas are directed through tube bottoms into an inlet diffuser and an outlet diffuser while the coolant is directed through the housing via coolant connections . The inventive flow ducts for the gas and the coolant are formed by a metal strip that is reshaped in a meandering manner and the housing , which are integrally bonded.

Description

Heat exchanger

Technical field

The present invention relates to a kind of heat exchanger, particularly a kind of charger-air cooler or gaseous effluent that is used for automobile, it is open by DE-A199 07 163.

Background technology

DE-A199 07 163 discloses a kind of exhaust gas heat exchanger that is welded, and it has a tube bank of being made up of rectangular tube, and waste gas flows at pipe interior, and cooling agent flows in the pipeline outer most surrounding.These tube banks are connected with a shell by tube sheet, and coolant interface is installed on the shell.Waste gas enters tube bank by an import air diffuser, and leaves heat exchanger from an outlet air diffuser.Particularly owing to the solder technology (LASER BEAM WELDING) that it adopted, the cost of this structure type is higher.

A kind of similar pipe bundle heat exchanger (but its structure type is the pipe of soldering) is then disclosed in WO 00/26514.But particularly compare with board-like system, this tube bundle system has potential advantages aspect power density.

198 46 518 of DE-A 198 33 338 and DE-A disclose the exhaust gas heat exchanger of a plank frame type.In this structure, the circulation duct of waste gas and cooling agent is to be made of identical or dissimilar heat exchanger plates.The characteristics of such heat exchanger are that its part is a lot, and its defective is that the part of heat exchanger plate is complex-shaped, thereby make die cost become very high.

At last, DE-A 195 11 991 discloses a kind of plate type heat exchanger of stepped construction, and its runner that is used for the various heat exchange medium then has different height.This heat exchanger that has stacked pad is to be in particular by engine coolant cooled compressed air and waste gas and custom-designed.But such heat exchanger can produce the very big pressure loss because of 90 degree bafflings of gas and cooling agent.

Summary of the invention

Task of the present invention is improved above-mentioned heat exchanger exactly, makes its manufacturing become easier, and more economical, particularly required parts still less.

According to the present invention, waste gas especially the runner, internal combustion engine of the engine exhaust gas runner that increases the runner of air and cooling agent by a meander shape ( ), waveform or trapezoidal metal tape and a shell constitute.Shell and metal tape have formed a core body that soldering forms, and it has mutual separated runner.The advantage of this simple structure is, needn't be that each runner (no matter being to be gas or cooling agent) is made special flat board, and they stackedly are in the same place with soldering.Another advantage is, cross section of fluid channel can take different shapes, as rectangle, trapezoidal, waveform or the like.Gas flow and coolant flow passages just can be carried out effective exchange heat near arrangement between the two media.The number of spare parts of heat exchanger is reduced significantly as described in the present invention.The end face of coolant flow passages is sealed by a pectination tube sheet.Have independent tooth on the tube sheet or separate lath, they are inserted in the side of opening wide on the meander shape parts and soldering with it.Like this, just realize sealing between coolant side and the exhaust gas side.Owing to no longer needing to restrain and the pipe end of restraining is inserted into welding or soldering in the tube sheet, so just not only simplified installation but also reduced manufacturing cost.

Have in the structure of advantage at of the present invention another, runner is roughly rectangle, and wherein preferably, the gas flow cross section is bigger.The cross section of fluid channel of rectangle can make heat exchanger core body become compact, withstand voltage and not produce vibration to the full extent.Just because the rectangular profile in cross section, the soldering between pectination tube sheet and the meander shape parts, promptly coolant flow passages just becomes easily and firmly in the sealing of end face.Rectangularl runner also is particularly suitable for packing into (as follows) of turbulent liner (Turbulenzeinlagen).

One of the present invention is further improved and is, shell is formed by a U type spare and cover plate or by 2 U-shaped spares, and they surround meander shape parts.So just can make to install becomes simple and soldering becomes firm.

One of the present invention is further improved and is, is arranging that on shell or cover plate a cooling agent shunt conduit and a cooling agent converge pipeline, and these pipelines are along extending with the perpendicular direction of coolant flow passages.Cooling agent just can uniform distribution in all coolant flow passages like this, thereby waste gas can be cooled off equably.If shunt conduit and converge pipeline and directly be shaped by cover plate or U-shaped spare, its advantage is clearly so.

In order to improve heat conduction, and improve the resistance to pressure and the vibration resistance of whole heat exchanger after the soldering, further improve as one of the present invention, turbulent liner (eddy current liner or fin play the effect of pull bar) is installed in coolant flow passages and/or the waste gas runner.

Description of drawings

The present invention is further illustrated below in conjunction with drawings and Examples, wherein:

Figure 1 shows that a heat exchanger as gaseous effluent;

Fig. 2 is the exploded view of this heat exchanger;

It among Fig. 2 a meander shape metal tape with runner;

Figure 3 shows that uncanned heat exchanger;

Fig. 4 is the reformed gaseous effluent of shell shape;

Fig. 4 a is the gaseous effluent that does not have air diffuser.

The specific embodiment

Fig. 1 is the reduced graph of gaseous effluent 1, and exhaust gas inlet marks with arrow A, and it has an air diffuser 2.Gaseous effluent 1 has a rectangular parallelepiped shell 3, and cover top portion is 3a, a cooling agent shunt conduit 4 and a cooling agent converges pipeline 5 in the shell top layout, coolant interface 4a is housed, 5a on the pipeline.The cooling agent of waste gas cooling usefulness enters into cooler 1 from interface 4a, flows out from 5a again, and cooling agent is represented with arrow K.Waste gas is by exporting the air diffuser (not shown) from leaving from cooler 1.A gaseous effluent like this is specially adapted to be equipped with the automobile of gas recirculation system (AGR).

Fig. 2 is the parts explosion of heat exchanger shown in Fig. 1.Identical parts is represented with same reference numerals.

In this exploded view, air diffuser 2 is along the direction displacement opposite with airflow direction, shell 3 and cooling agent shunt conduit and converge pipeline 4,5 and upwards rise.The below is a heat exchanger core body 6, and it is made up of a metal tape 7 that is folded into meander shape.Meander shape parts 7 constitute waste gas runner 8 in a side, constitute coolant flow passages 9 at opposite side.

As can be seen from the figure, the side of coolant flow passages 9 towards core body 6 tops is what open wide, and the side of waste gas runner 8 towards core body 6 bottoms is what open wide.Runner road 8,9 has a square-section respectively, and turbulent liner 10,11 is inserted in the runner.In order to see turbulent liner clearly, it is protruding from core body 6 in the drawings.On core body 6, can see 2 pectination tube sheets ( ) 12,13, they have independent tooth or separate lath 14,15.Tooth or separate lath (in the drawings) to be inserted into the runner that is open upwards from top to bottom be in the coolant flow passages 9, like this cross section of fluid channel in the end by complete closed.After being inserted into tube sheet 12,13 in the coolant flow passages 9, again shell 3 is covered on core body 6, make shunt conduit and converge pipeline 4,5 laterally to cover coolant flow passages.Top 3a in shunt conduit and the zone of converging the coolant flow passages 9 between the pipeline 4,5 by shell covers.The bottom (not shown) of heat exchanger core body 6 is by a cover closure not shown in the figures, and like this, the waste gas runner 8 that cover plate also will open wide thereupon down seals.Cover plate can certainly be placed on the 3a of top, 3 on shell is made of a U-shaped casing that is open upwards, and it is made up of bottom 3b and two side 3c, 3d.

Fig. 2 a has shown parts, i.e. a metal tape 7 that is folded into meander shape.By metal tape is folded or crimp by certain angle, formed the rectangular flow body section of runner 8,9.Runner has identical length L, but width is different: the width b1 of waste gas runner 8, and greater than the width b2 of coolant flow passages 9.

Be the gaseous effluent 1 shown in Fig. 1 and 2 among Fig. 3, but it is not with shell 3 and air diffuser 2, promptly has only heat exchanger core body 6.Here, identical parts is also represented with same reference numerals.Can see the end face of waste gas runner 8 along exhaust gas flow direction A (see figure 1), each waste gas runner then is spaced from each other by separation lath on the pectination tube sheet 12 or tooth 14.Separating lath 14 seals the end face of coolant flow passages 9 simultaneously.Turbulent flow liner 10 is arranged in waste gas runner 8.Among the embodiment shown in the figure, flow of coolant becomes following current with waste gas, that is to say, cooling agent at first enters shunt conduit 4, then therefrom transverse distribution in coolant flow passages 9, converge pipeline 5 in the coolant flow passages 9 back arrival of flowing through along exhaust gas flow direction, cooling agent flows out from gaseous effluent 1 there.Cooling agent also can adopt opposite flow direction according to the adverse current form.

Gaseous effluent 1 described above is preferably adopted and is made from high grade steel.The charger-air cooler that heat exchanger 1 also can be used as the cooling internal combustion engines combustion air uses, and its just preferential employing aluminium alloy is made so.

Be another embodiment of gaseous effluent 16 among Fig. 4, its shell shape is changed, and is made up of U-shaped spare 17,18.Two U-shaped spares 17,18 connect along longitudinal joint in the side, can see the longitudinal joint 19 of front on figure.Gaseous effluent 16 has an exhaust gas inlet sleeve pipe at end face, and promptly air diffuser 20.Superposed U-shaped spare 17 has the shunt conduit 21 of a horizontal expansion, has a coolant inlet sleeve pipe 22 on the shunt conduit, and what U-shaped spare also had a same horizontal expansion converges pipeline 23, converges and has a coolant outlet sleeve pipe 24 on the pipeline.Two pipelines 21,23 can be directly from constituting the steel formability of U-shaped spare 17.

Among Fig. 4 a be one and that is to say that not with the gaseous effluent 16 of air diffuser 20 its end face 25 is the import of waste gas (identifying with arrow A).Similar with a last embodiment, end face 25 has the waste gas runner 27 that opens wide as shown in the figure downwards, and the coolant flow passages 26 that end face is closed then is open upwards, thus and shunt conduit 21 connections.Like this, cooling agent at first is assigned on width in all ooling channels 26, and the cooler 16 of longitudinally flowing through then flows out cooler up to it by converging pipeline 23.Two and half ones 17,18 that can clearly be seen that shell from figure are U-shaped spare.

Claims (15)

1. heat exchanger, comprise the runner that is arranged among the shell (3), is provided with for gas to be cooled and cooling agent, wherein, gas flow passes tube sheet and enters into an import air diffuser and an outlet air diffuser (2), then (4a 5a) passes shell (3) to cooling agent, it is characterized in that by coolant interface, gas flow (8) and coolant flow passages (9) are formed by metal tape that is bent to meander shape and shell (3), and metal tape and shell are by melting welding, soldering or bond together; Coolant flow passages (9) has one towards the unlimited cross section of shell one side (3a), and tube sheet (12,13) is for pectination and have tooth (14,15), and this tooth (14,15) seals coolant flow passages (9) in the end of coolant flow passages (9).
2. heat exchanger as claimed in claim 1 is characterized in that, the cross section of gas flow (8) and coolant flow passages (9) is a rectangle.
3. heat exchanger as claimed in claim 2 is characterized in that, the cross section of gas flow (8) is greater than the cross section of coolant flow passages (9).
4. heat exchanger as claimed in claim 3 is characterized in that, the gas flow of rectangle (8) has identical length L with coolant flow passages (9), but their width b1 is different with b2.
5. as claim 1 or 2 or 4 described heat exchangers, it is characterized in that, heat exchanger (1) has shunt conduit and converges pipeline (4,5) on a side (3a), they link to each other with coolant interface (4a, 5a), and extends along the direction vertical with coolant flow passages.
6. heat exchanger as claimed in claim 3 is characterized in that, heat exchanger (1) has shunt conduit and converges pipeline (4,5) on a side (3a), and they link to each other with coolant interface (4a, 5a), and extends along the direction vertical with coolant flow passages.
7. as claim 1 or 2 or 4 or 6 described heat exchangers, it is characterized in that (3b, 3c 3d) constitute with a cover plate (3a) or by two U-shaped spares (17,18) shell (3) by a U-shaped body.
8. heat exchanger as claimed in claim 3 is characterized in that, (3b, 3c 3d) constitute with a cover plate (3a) or by two U-shaped spares (17,18) shell (3) by a U-shaped body.
9. heat exchanger as claimed in claim 5 is characterized in that, (3b, 3c 3d) constitute with a cover plate (3a) or by two U-shaped spares (17,18) shell (3) by a U-shaped body.
10. heat exchanger as claimed in claim 5 is characterized in that, cover plate (3a) or U-shaped spare (17) are with shunt conduit and converge pipeline (4,5; 21,23) connect.
11. heat exchanger as claimed in claim 7 is characterized in that, cover plate (3a) or U-shaped spare (17) are with shunt conduit and converge pipeline (4,5; 21,23) connect.
12. heat exchanger according to claim 10 is characterized in that, shunt conduit and converge pipeline (4,5; 21, be one 23), directly form by cover plate or U-shaped spare with cover plate (3a) or U-shaped spare (17).
13. heat exchanger according to claim 11 is characterized in that, shunt conduit and converge pipeline (4,5; 21, be one 23), directly form by cover plate or U-shaped spare with cover plate (3a) or U-shaped spare (17).
14., it is characterized in that turbulent liner (10,11) is arranged in gas flow (8) and the coolant flow passages (9), and be connected with metal tape (7) soldering according to described heat exchanger one of in the claim 10 to 13.
15. heat exchanger according to claim 1 is characterized in that, this heat exchanger is charger-air cooler or the gaseous effluent that is used for automobile.
CNB200380109185XA 2003-01-24 2003-11-10 Heat exchanger CN100501295C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10302948.6 2003-01-24
DE2003102948 DE10302948A1 (en) 2003-01-24 2003-01-24 Heat exchanger, in particular exhaust gas cooler for motor vehicles

Publications (2)

Publication Number Publication Date
CN1742189A CN1742189A (en) 2006-03-01
CN100501295C true CN100501295C (en) 2009-06-17

Family

ID=32667841

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB200380109185XA CN100501295C (en) 2003-01-24 2003-11-10 Heat exchanger

Country Status (7)

Country Link
US (1) US20060048926A1 (en)
EP (1) EP1604163A1 (en)
JP (1) JP2006513394A (en)
CN (1) CN100501295C (en)
AU (1) AU2003292004A1 (en)
DE (1) DE10302948A1 (en)
WO (1) WO2004065876A1 (en)

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Also Published As

Publication number Publication date
DE10302948A1 (en) 2004-08-05
US20060048926A1 (en) 2006-03-09
JP2006513394A (en) 2006-04-20
WO2004065876A1 (en) 2004-08-05
CN1742189A (en) 2006-03-01
AU2003292004A1 (en) 2004-08-13
EP1604163A1 (en) 2005-12-14

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