US20070017661A1 - Heat exchanger - Google Patents
Heat exchanger Download PDFInfo
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- US20070017661A1 US20070017661A1 US10/576,523 US57652306A US2007017661A1 US 20070017661 A1 US20070017661 A1 US 20070017661A1 US 57652306 A US57652306 A US 57652306A US 2007017661 A1 US2007017661 A1 US 2007017661A1
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- United States
- Prior art keywords
- heat exchanger
- tubes
- structures
- housing
- tube
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
- F28D7/1653—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing the conduit assemblies having a square or rectangular shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
- F28F9/0268—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box in the form of multiple deflectors for channeling the heat exchange medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
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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
Definitions
- the invention relates to a heat exchanger, in particular for a motor vehicle, as described in the preamble of claim 1 .
- the invention provides a heat exchanger having a housing and at least one tube arranged in the housing, structures being provided between the tubes and the housing and/or between the individual tubes.
- the primary medium flows through the tubes.
- the secondary medium is passed within the spaces between the individual tubes and/or between the tubes and the housing, in which the structures are also arranged.
- the structures increase the strength by providing a stiffening action with respect to internal and external pressures acting on the tubes.
- the coupling between the tubes and the housing brings about continuous compensation for the thermal stresses between primary and secondary sides over the entire length of the cooler, so that the stresses at the ends of the tubes are considerably reduced.
- the structures are also used for fluid diverting and distribution within the heat exchanger.
- the finned metal plates allow better heat transfer, with the result that thermal stresses can be reduced by the improved heat transfer.
- the increased heat transfer surface area leads to better cooling of the tubes, and boiling can be avoided. Overall, therefore, the result is a considerable increase in the power density of the heat exchanger compared to conventional heat exchangers without structures.
- the structures it is preferable for sheet-metal structures in the form of separate tubes, finned metal plates, studded metal plates or the like to be introduced.
- the heat exchanger may in particular be an exhaust-gas heat exchanger or charge-air cooler, but may also be another form of heat exchanger, for example another gas-liquid heat exchanger, in which hot gas flows through the heat exchanger (cooler) in tubes in order to be cooled, a liquid-gas heat exchanger, in which cold gas flows through the heat exchanger (heater) in tubes in order to be heated, or a liquid-liquid heat exchanger.
- another gas-liquid heat exchanger in which hot gas flows through the heat exchanger (cooler) in tubes in order to be cooled
- a liquid-gas heat exchanger in which cold gas flows through the heat exchanger (heater) in tubes in order to be heated
- a liquid-liquid heat exchanger i.e. in particular the tube surface may be of fin-like and/or stud-like design.
- the structures preferably have a height of from 1 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 1.5 mm.
- the pitch L of the structures is preferably 0.1 to 6 times, particularly preferably 0.5 to 4 times, the structure height h.
- the transverse pitch Q is preferably 0.15 to 8 times, particularly preferably 0.5 to 5 times, the structure height h.
- the ratio of passage height between the tubes and passage height within the tube in the region of structures is preferably from 0.1 to 1, preferably from 0.2 to 0.7.
- the hydraulic diameter between the tubes in the region with structures is preferably from 0.5 mm to 10 mm, for preference from 1 mm to 5 mm.
- the structures are fixedly joined to the housing and/or the tubes, in particular by soldering.
- a fixed connection over a large part of the length of the heat exchanger, with or without interruptions, for example to improve distribution of coolant, is provided.
- the fixed connection very efficiently increases the resistance to external pressure (excess pressure on the secondary side), since the structures provided high rods which prevent the tube from collapsing.
- oscillations in the relatively labile tubes of conventional heat exchangers are damped by the structures, and the thermal stresses are very efficiently equalized.
- the fixed connection assists with the heat transfer from the tubes to the structures, resulting in better cooling of the tubes.
- the number of tubes can be reduced by an improved heat transfer, so that the production costs can be lowered.
- the tubes are preferably at least in part formed by flat tubes.
- Flat tubes in this context have a significantly better thermodynamic performance than round tubes but have a lower ability to withstand pressure, and consequently measures for increasing the ability to withstand pressure are required for flat tubes, such as in accordance with the invention a supporting structure on the outer side of the tubes.
- the flat tubes in particular have an approximately rectangular cross section with rounded corners.
- the rectangular tubes may also be constructed from shells which are welded or soldered together.
- the tubes may also have any other desired form, for example oval, and/or may have lateral tabs which are soldered and/or welded.
- the tubes can be of slightly convex design. It is also possible for turbulators (winglets) to be provided in and/or on the tubes.
- turbulators winglets
- the tube surface inner and/or outer may also be structured so as to generate turbulence.
- the structures at least in part to have an inhomogeneous construction, with the result that coolant can be supplied in targeted fashion to critical regions, so that overheating or boiling can be avoided.
- a correspondingly increased supply of coolant can also be achieved by the partial emission of structures.
- the pressure loss in the heat exchanger and the transverse distribution of the coolant in the heat exchanger can be optimized by these measures.
- the regions with inhomogeneous structures are preferably in the inlet and/or outlet region of the fluid. They are used in particular for flow diversion and to minimize the pressure loss.
- the stability of the structures can be increased by at least partial toothing, and furthermore the flow paths of the coolant can thereby be optimized.
- the housing is preferably formed in two or more parts, in particular as a U-shaped shell with a cover, in which case a water chamber can be integrated in the cover.
- a single-part construction for example with an integrally formed water chamber, is also possible.
- Structures can also be provided in the tubes themselves, in which case all the abovementioned structures which may be provided between the tubes can also be integrated in the tubes.
- the structures are preferably formed by finned metal plates or studded metal plates which are joined to the tube for example by welding, soldering or clamping.
- the structures preferably have a height of from 1 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 1.5 mm.
- the pitch L of the structures is preferably 0.5 to 6 times the structure height h.
- the transverse pitch Q is preferably 0.5 to 8 times the structure height h.
- the hydraulic diameter in the tube in the region having structures is preferably from 0.5 mm to 10 mm, for preference 1 mm to 5 mm.
- FIG. 1 shows a section through an exhaust-gas heat exchanger
- FIG. 2 shows a perspective view of the heat exchanger from FIG. 1 ,
- FIG. 3 shows a diagrammatic perspective view of a finned metal plate
- FIG. 4 shows a diagrammatic perspective view of a finned metal plate in accordance with a variant
- FIG. 5 a - d show a number of variants of inlet regions.
- An exhaust-gas heat exchanger 1 has a two-part housing 2 and a plurality of tubes 3 arranged in this housing 2 .
- Finned metal plates 4 are provided between the individual tubes 3 and between the housing 2 and the tubes 3 as structures, these finned metal plates 4 in accordance with the present exemplary embodiment being toothed, as illustrated in FIG. 3 and described in more detail below.
- the tubes 3 are in the present case flat tubes.
- the exhaust gas which is to be cooled and comes from the engine is passed through the individual tubes 3 ; the direction of flow is indicated by two solid arrows in FIG. 2 .
- the housing 2 in which the tubes 3 are arranged comprises a U-shaped first housing part 2 ′ and a housing cover 2 ′′ which is fitted onto the first housing part 2 ′ from above.
- Two coolant connection pieces 5 are provided in the housing cover 2 ′′ as inlet and outlet for the coolant (liquid secondary medium), the direction of flow of the coolant in co-current operation being represented by dashed arrows in FIG. 2 .
- Flow in counter-current mode is also possible, for which purpose the direction of flow is reversed. Since the coolant is passed through the housing 2 and around the tubes 3 , the finned metal plates 4 are arranged on the coolant side.
- the finned metal plates 4 formed with straight toothing make it easy for the coolant to pass through in the direction of the arrow represented by a solid line in FIG. 3 and more difficult for the coolant to pass through in the direction indicated by a dashed arrow in FIG. 3 .
- the flow can be influenced by changing the longitudinal pitch L and transverse pitch Q as well as the fin height h.
- oblique toothing is also possible. Given a suitable configuration of the individual finned metal plates 4 , these plates can also assist the passage of coolant in targeted fashion at particularly critical locations, for which purpose the finned metal plates 4 are inhomogeneous at least in regions.
- FIG. 4 illustrates a simple variant of a finned metal plate with a fin running in a straight direction which has a longitudinal pitch L of 2.4 mm and a fin or structure height h of 1.5 mm.
- the finned metal plate may also be bent from a perforated metal plate, so that the individual corrugation flanks are permeable on account of the perforations.
- a corresponding construction is used for a charge-air cooler.
- FIG. 5 a - d show various inhomogeneous regions of the structures which form the finned metal plates 4 . These effect better distribution of the fluid as it flows in.
- transverse distribution passages are provided by deformation or stamping.
- the finned metal plates 4 have been partially cut away.
- FIG. 5 d shows a variant with a special distributor structure formed on the finned metal plate 4 .
- An inhomogeneous region corresponding to FIG. 5 a to 5 d may also be provided on the outflow side.
Abstract
The invention relates to a heat exchanger (1), especially for motor vehicles, comprising a housing (2) and at least one pipe (3) disposed inside said housing (2). The heat exchanger is characterized in that structures (4) are provided in the area between the pipes (3) and the housing (2) and/or between the pipes (3).
Description
- The invention relates to a heat exchanger, in particular for a motor vehicle, as described in the preamble of
claim 1. - Extensive measures, such as for example increased supercharging, more accurate influencing of the combustion conditions, are required to satisfy the increase in demands imposed on modern engines with regard to reduction of emissions and fuel consumption. This also leads to more arduous conditions of use for motor vehicle heat exchangers, specifically higher gas and coolant pressures, increased temperatures and greater volumetric throughputs. At the same time, the demands imposed on power density and service life are also increasing. In some cases, therefore, new cooling concepts are required. For example, in the case of charge-air coolers, the air/air coolers which have customarily been used are at least in part being replaced by air/liquid coolers in order to achieve the required performance and power densities required on account of the high engine supercharging. In the case of exhaust-gas heat exchangers, ever higher exhaust-gas recirculation rates are required, involving likewise evermore arduous operating conditions in terms of pressures, temperatures and power densities. Therefore, ever higher mechanical stresses are encountered in modern heat exchangers, in particular with regard to pressure and oscillations.
- High temperature differences between the primary medium, which is to be cooled and is generally in gas form, and the cooling secondary medium, which is generally in liquid form, lead to different levels of component heating on the primary side and secondary side. In the case of exhaust-gas heat exchangers, the temperature difference may amount to over 700 K, and in the case of charge-air coolers up to 300 K. On account of different thermal longitudinal expansions between the primary and secondary sides, considerable thermal stresses are produced. In the event of rapid changes in operating state, these thermal stresses may also be exacerbated by uneven temperature distributions (thermal shocks).
- Moreover, on account of higher heat exchanger power densities, the risk of the coolant boiling rises, which can lead to increased power losses and shorter service lives.
- Finally, the processes and materials used are subject to considerable restrictions on account of the occurrence of highly corrosive medium, e.g. condensate from the exhaust gas in the case of exhaust-gas heat exchangers, which given the ever increasing demands imposed on power density leads to ever greater problems in providing a long-term technical solution for balancing sufficient resistance of the flow channels to internal and external pressures with sufficient resistance to induced oscillations and thermal stresses, while avoiding boiling.
- It is an object of the invention to provide an improved heat exchanger.
- This object is achieved by the heat exchanger having the features of
claim 1. Advantageous configurations form the subject matter of the subclaims. - The invention provides a heat exchanger having a housing and at least one tube arranged in the housing, structures being provided between the tubes and the housing and/or between the individual tubes. The primary medium flows through the tubes. The secondary medium is passed within the spaces between the individual tubes and/or between the tubes and the housing, in which the structures are also arranged. The structures increase the strength by providing a stiffening action with respect to internal and external pressures acting on the tubes. Moreover, the coupling between the tubes and the housing brings about continuous compensation for the thermal stresses between primary and secondary sides over the entire length of the cooler, so that the stresses at the ends of the tubes are considerably reduced. The structures are also used for fluid diverting and distribution within the heat exchanger. Furthermore, the finned metal plates allow better heat transfer, with the result that thermal stresses can be reduced by the improved heat transfer. The increased heat transfer surface area leads to better cooling of the tubes, and boiling can be avoided. Overall, therefore, the result is a considerable increase in the power density of the heat exchanger compared to conventional heat exchangers without structures. As the structures, it is preferable for sheet-metal structures in the form of separate tubes, finned metal plates, studded metal plates or the like to be introduced. The heat exchanger may in particular be an exhaust-gas heat exchanger or charge-air cooler, but may also be another form of heat exchanger, for example another gas-liquid heat exchanger, in which hot gas flows through the heat exchanger (cooler) in tubes in order to be cooled, a liquid-gas heat exchanger, in which cold gas flows through the heat exchanger (heater) in tubes in order to be heated, or a liquid-liquid heat exchanger. As an alternative to using sheet-metal structures, it is also possible for the tubes and/or the housing to be correspondingly designed with structures, i.e. in particular the tube surface may be of fin-like and/or stud-like design. The structures preferably have a height of from 1 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 1.5 mm. The pitch L of the structures is preferably 0.1 to 6 times, particularly preferably 0.5 to 4 times, the structure height h. The transverse pitch Q is preferably 0.15 to 8 times, particularly preferably 0.5 to 5 times, the structure height h. The ratio of passage height between the tubes and passage height within the tube in the region of structures is preferably from 0.1 to 1, preferably from 0.2 to 0.7. The hydraulic diameter between the tubes in the region with structures is preferably from 0.5 mm to 10 mm, for preference from 1 mm to 5 mm.
- It is preferable for the structures to be fixedly joined to the housing and/or the tubes, in particular by soldering. In this case, in particular a fixed connection over a large part of the length of the heat exchanger, with or without interruptions, for example to improve distribution of coolant, is provided. The fixed connection very efficiently increases the resistance to external pressure (excess pressure on the secondary side), since the structures provided high rods which prevent the tube from collapsing. Furthermore, oscillations in the relatively labile tubes of conventional heat exchangers are damped by the structures, and the thermal stresses are very efficiently equalized. Furthermore, the fixed connection assists with the heat transfer from the tubes to the structures, resulting in better cooling of the tubes. Moreover, the number of tubes can be reduced by an improved heat transfer, so that the production costs can be lowered.
- The tubes are preferably at least in part formed by flat tubes. Flat tubes in this context have a significantly better thermodynamic performance than round tubes but have a lower ability to withstand pressure, and consequently measures for increasing the ability to withstand pressure are required for flat tubes, such as in accordance with the invention a supporting structure on the outer side of the tubes. The flat tubes in particular have an approximately rectangular cross section with rounded corners. Furthermore, it is possible to provide single-piece rectangular tubes. These may have a longitudinal seam which may be welded, for example laser-welded, friction-welded, induction-welded, or soldered. The rectangular tubes may also be constructed from shells which are welded or soldered together. The tubes may also have any other desired form, for example oval, and/or may have lateral tabs which are soldered and/or welded. Furthermore, to compensate for tolerances between housing and tubes and the structures arranged between them, the tubes can be of slightly convex design. It is also possible for turbulators (winglets) to be provided in and/or on the tubes. The tube surface (inner and/or outer) may also be structured so as to generate turbulence.
- It is preferable for the structures at least in part to have an inhomogeneous construction, with the result that coolant can be supplied in targeted fashion to critical regions, so that overheating or boiling can be avoided. A correspondingly increased supply of coolant can also be achieved by the partial emission of structures. The pressure loss in the heat exchanger and the transverse distribution of the coolant in the heat exchanger can be optimized by these measures. The regions with inhomogeneous structures are preferably in the inlet and/or outlet region of the fluid. They are used in particular for flow diversion and to minimize the pressure loss.
- The stability of the structures can be increased by at least partial toothing, and furthermore the flow paths of the coolant can thereby be optimized.
- To simplify the structure of the heat exchanger, the housing is preferably formed in two or more parts, in particular as a U-shaped shell with a cover, in which case a water chamber can be integrated in the cover. In principle, however, a single-part construction, for example with an integrally formed water chamber, is also possible.
- Structures can also be provided in the tubes themselves, in which case all the abovementioned structures which may be provided between the tubes can also be integrated in the tubes. The structures are preferably formed by finned metal plates or studded metal plates which are joined to the tube for example by welding, soldering or clamping. The structures preferably have a height of from 1 mm to 5 mm, preferably 1 mm to 3 mm, particularly preferably 1.5 mm. The pitch L of the structures is preferably 0.5 to 6 times the structure height h. The transverse pitch Q is preferably 0.5 to 8 times the structure height h. The hydraulic diameter in the tube in the region having structures is preferably from 0.5 mm to 10 mm, for
preference 1 mm to 5 mm. - The text which follows provides a more detailed explanation of the invention on the basis of an exemplary embodiment and with reference to the drawing, in which:
-
FIG. 1 shows a section through an exhaust-gas heat exchanger, -
FIG. 2 shows a perspective view of the heat exchanger fromFIG. 1 , -
FIG. 3 shows a diagrammatic perspective view of a finned metal plate, -
FIG. 4 shows a diagrammatic perspective view of a finned metal plate in accordance with a variant, and -
FIG. 5 a-d show a number of variants of inlet regions. - An exhaust-
gas heat exchanger 1 has a two-part housing 2 and a plurality oftubes 3 arranged in thishousing 2.Finned metal plates 4 are provided between theindividual tubes 3 and between thehousing 2 and thetubes 3 as structures, these finnedmetal plates 4 in accordance with the present exemplary embodiment being toothed, as illustrated inFIG. 3 and described in more detail below. Thetubes 3 are in the present case flat tubes. - The exhaust gas which is to be cooled and comes from the engine (gaseous primary medium) is passed through the
individual tubes 3; the direction of flow is indicated by two solid arrows inFIG. 2 . Thehousing 2 in which thetubes 3 are arranged comprises a U-shapedfirst housing part 2′ and ahousing cover 2″ which is fitted onto thefirst housing part 2′ from above. Twocoolant connection pieces 5 are provided in thehousing cover 2″ as inlet and outlet for the coolant (liquid secondary medium), the direction of flow of the coolant in co-current operation being represented by dashed arrows inFIG. 2 . Flow in counter-current mode is also possible, for which purpose the direction of flow is reversed. Since the coolant is passed through thehousing 2 and around thetubes 3, the finnedmetal plates 4 are arranged on the coolant side. - The finned
metal plates 4 formed with straight toothing make it easy for the coolant to pass through in the direction of the arrow represented by a solid line inFIG. 3 and more difficult for the coolant to pass through in the direction indicated by a dashed arrow inFIG. 3 . The flow can be influenced by changing the longitudinal pitch L and transverse pitch Q as well as the fin height h. In addition to a straight toothing, oblique toothing is also possible. Given a suitable configuration of the individualfinned metal plates 4, these plates can also assist the passage of coolant in targeted fashion at particularly critical locations, for which purpose the finnedmetal plates 4 are inhomogeneous at least in regions. -
FIG. 4 illustrates a simple variant of a finned metal plate with a fin running in a straight direction which has a longitudinal pitch L of 2.4 mm and a fin or structure height h of 1.5 mm. The finned metal plate may also be bent from a perforated metal plate, so that the individual corrugation flanks are permeable on account of the perforations. - According to a variant which is not illustrated in the drawing, a corresponding construction is used for a charge-air cooler.
-
FIG. 5 a-d show various inhomogeneous regions of the structures which form the finnedmetal plates 4. These effect better distribution of the fluid as it flows in. According to the first variant, illustrated inFIG. 5 a, transverse distribution passages are provided by deformation or stamping. According to the variants illustrated inFIGS. 5 b and 5 c, the finnedmetal plates 4 have been partially cut away.FIG. 5 d shows a variant with a special distributor structure formed on the finnedmetal plate 4. An inhomogeneous region corresponding toFIG. 5 a to 5 d may also be provided on the outflow side.
Claims (17)
1. A heat exchanger, in particular for motor vehicles, having a housing and at least one tube arranged in the housing, wherein structures are provided in the region between the tubes and the housing and/or between the individual tubes.
2. The heat exchanger as claimed in claim 1 , wherein the structures are formed from sheet-metal structures arranged between the tubes and the housing and/or between the individual tubes.
3. The heat exchanger as claimed in claim 2 , wherein the sheet-metal structures are finned metal plates, studded metal plates or separate tubes.
4. The heat exchanger as claimed in claim 1 , wherein the structures are formed directly on the housing and/or on the tubes.
5. The heat exchanger as claimed in claim 4 , wherein the structures are produced by means of stamping.
6. The heat exchanger as claimed in claim 1 , wherein the structures are fixedly joined to the housing and/or the tubes, in particular by soldering.
7. The heat exchanger as claimed in claim 1 , wherein the tubes are at least in part formed by flat tubes.
8. The heat exchanger as claimed in claim 1 , wherein the tubes have supporting studs on the tube outer side.
9. The heat exchanger as claimed in claim 1 , wherein the tubes have a tube surface on the inner and/or outer side which is structured so as to generate turbulence.
10. The heat exchanger as claimed in claim 1 , wherein the structures at least in part have an inhomogeneous structure.
11. The heat exchanger as claimed in claim 1 , wherein the structures are at least partially toothed.
12. The heat exchanger as claimed in claim 1 , wherein the housing is formed in two or more parts.
13. The heat exchanger as claimed in claim 1 , wherein a medium which is to be cooled flows within the tubes, and a coolant flows in the space between the housing and the tubes and structures.
14. The heat exchanger as claimed in claim 1 , wherein the structures are arranged on the coolant side in the housing of the heat exchanger.
15. The heat exchanger as claimed in claim 1 , wherein the structures are arranged in the interior of at least one tube.
16. The heat exchanger as claimed in claim 1 , wherein the structures are formed as at least one fin which is in particular straight or of undulating depth and/or in particular has gills.
17. The use of the heat exchanger as claimed in claim 1 , wherein as an exhaust-gas heat exchanger or a charge-air cooler of a motor vehicle.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10349259.3 | 2003-10-20 | ||
DE10349259 | 2003-10-20 | ||
EP04024691.0A EP1528348B1 (en) | 2003-10-20 | 2004-10-15 | Heat exchanger |
EP04024691.0 | 2004-10-15 | ||
PCT/EP2004/011867 WO2005040708A1 (en) | 2003-10-20 | 2004-10-20 | Heat exchanger |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070017661A1 true US20070017661A1 (en) | 2007-01-25 |
Family
ID=34524041
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/576,523 Abandoned US20070017661A1 (en) | 2003-10-20 | 2004-10-20 | Heat exchanger |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070017661A1 (en) |
JP (1) | JP4676438B2 (en) |
BR (1) | BRPI0415609A (en) |
WO (1) | WO2005040708A1 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070221181A1 (en) * | 2006-03-24 | 2007-09-27 | Behr Gmbh & Co. Kg | Device and method for cooling exhaust gas |
US20070261815A1 (en) * | 2006-05-09 | 2007-11-15 | Melby Robert M | Multi-passing liquid cooled charge air cooler with coolant bypass ports for improved flow distribution |
US20080011464A1 (en) * | 2006-07-11 | 2008-01-17 | Denso Corporation | Exhaust gas heat exchanger |
US20080105414A1 (en) * | 2004-11-23 | 2008-05-08 | Behr Gmbh & Co. Kg | Low-Temperature Coolant Cooler |
US20080202731A1 (en) * | 2004-07-30 | 2008-08-28 | Behr Gmbh & Co. Kg | One-Piece Turbulence Insert |
US20090090486A1 (en) * | 2006-03-16 | 2009-04-09 | Behr Gmbh & Co. Kg | Heat exchanger for a motor vehicle |
US20090277606A1 (en) * | 2008-05-12 | 2009-11-12 | Reiss Iii Thomas J | Heat exchanger support and method of assembling a heat exchanger |
US20100044019A1 (en) * | 2008-08-25 | 2010-02-25 | Denso Corporation | Heat exchanger |
US20100071871A1 (en) * | 2007-02-28 | 2010-03-25 | Gaensler Michael | Heat exchanger, exhaust gas recirculation system, charge air supply system, and use of the heat exchanger |
US20100084120A1 (en) * | 2008-10-03 | 2010-04-08 | Jian-Min Yin | Heat exchanger and method of operating the same |
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US7322403B2 (en) | 2005-11-28 | 2008-01-29 | Honeywell International, Inc. | Heat exchanger with modified tube surface feature |
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US8915292B2 (en) | 2006-02-07 | 2014-12-23 | Modine Manufacturing Company | Exhaust gas heat exchanger and method of operating the same |
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US8544454B2 (en) * | 2006-03-16 | 2013-10-01 | Behr Gmbh & Co. Kg | Heat exchanger for a motor vehicle |
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US8720199B2 (en) | 2007-02-28 | 2014-05-13 | Behr Gmbh & Co. Kg | Heat exchanger, exhaust gas recirculation system, charge air supply system, and use of the heat exchanger |
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US20100084120A1 (en) * | 2008-10-03 | 2010-04-08 | Jian-Min Yin | Heat exchanger and method of operating the same |
US8550153B2 (en) * | 2008-10-03 | 2013-10-08 | Modine Manufacturing Company | Heat exchanger and method of operating the same |
FR2938321A1 (en) * | 2008-11-07 | 2010-05-14 | Valeo Sys Controle Moteur Sas | Heat exchanger for exhaust gas recirculation circuit of heat engine of motor vehicle, has inlet and exhaust ducts with end longitudinally separated from reference plane by distance that is less than another distance measured along near axis |
US20120138280A1 (en) * | 2009-05-28 | 2012-06-07 | Hans-Heinrich Angermann | Layer heat exchanger for high temperatures |
US20120292002A1 (en) * | 2009-11-20 | 2012-11-22 | Christian Saumweber | Intake pipe for an internal combustion engine |
US9605586B2 (en) * | 2009-11-20 | 2017-03-28 | Mahle International Gmbh | Intake pipe for an internal combustion engine |
US9403204B2 (en) | 2010-01-29 | 2016-08-02 | Modine Manufacturing Company | Heat exchanger assembly and method |
US20110186276A1 (en) * | 2010-01-29 | 2011-08-04 | Casterton Joel T | Heat exchanger assembly and method |
US20120037347A1 (en) * | 2010-08-11 | 2012-02-16 | Honeywell International Inc. | Method of controlling tube temperatures to prevent freezing of fluids in cross counterflow shell and tube heat exchanger |
ES2402963A1 (en) * | 2010-12-22 | 2013-05-10 | Valeo Térmico, S.A. | Heat exchanger of stacked plates. (Machine-translation by Google Translate, not legally binding) |
ES2401626R1 (en) * | 2011-10-05 | 2013-10-23 | Valeo Termico Sa | HEAT EXCHANGER FOR GASES, ESPECIALLY OF EXHAUST GASES OF AN ENGINE |
EP2764231B1 (en) | 2011-10-05 | 2017-06-07 | Valeo Termico S.A. | Heat exchanger for gases, especially engine exhaust gases |
US20130277026A1 (en) * | 2012-02-16 | 2013-10-24 | Eberspacher Climate Control Systems GmbH & Co. KG | Evaporator, especially for a waste gas heat recovery device |
US9664450B2 (en) | 2013-04-24 | 2017-05-30 | Dana Canada Corporation | Fin support structures for charge air coolers |
US20160025428A1 (en) * | 2014-07-24 | 2016-01-28 | Mahle International Gmbh | Heat exchanger |
US20180247885A1 (en) * | 2017-02-28 | 2018-08-30 | Deere & Company | Electronic assembly with enhanced thermal dissipation |
Also Published As
Publication number | Publication date |
---|---|
WO2005040708A1 (en) | 2005-05-06 |
JP2007510119A (en) | 2007-04-19 |
BRPI0415609A (en) | 2006-12-05 |
JP4676438B2 (en) | 2011-04-27 |
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Owner name: BEHR GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GESKES, PETER;HENDRIX, DANIEL;LUTZ, RAINER;AND OTHERS;REEL/FRAME:018134/0309;SIGNING DATES FROM 20060517 TO 20060721 |
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