EP2485007A2 - Heat exchanger with finned tubes - Google Patents
Heat exchanger with finned tubes Download PDFInfo
- Publication number
- EP2485007A2 EP2485007A2 EP12151556A EP12151556A EP2485007A2 EP 2485007 A2 EP2485007 A2 EP 2485007A2 EP 12151556 A EP12151556 A EP 12151556A EP 12151556 A EP12151556 A EP 12151556A EP 2485007 A2 EP2485007 A2 EP 2485007A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tubes
- wall
- fluid
- heat exchanger
- flow path
- 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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Links
- 239000012530 fluid Substances 0.000 claims abstract description 67
- 238000004378 air conditioning Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000002918 waste heat Substances 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
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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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05341—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
- F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
-
- 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
- F28F1/24—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 transversely
- F28F1/32—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 transversely the means having portions engaging further tubular elements
Definitions
- the present invention relates to a finned tube heat exchanger, in particular for vehicle applications. Moreover, the present invention relates to a use for such a finned tube heat exchanger.
- Finned tube heat exchangers are characterized by a plurality of parallel tubes which are provided with ribs, wherein the ribs and the tubes are acted upon by a first fluid and the tubes are flowed through by a second fluid.
- such a finned tube type heat exchanger may include a housing enclosing a first flow path for a first fluid and having a first inlet for the first fluid and a first outlet for the first fluid.
- a finned tube type heat exchanger typically includes a tubing system that forms a second fluid second flow path having a second inlet for the second fluid and a second outlet for the second fluid and that is heat coupled within the housing to the first flow path.
- the pipe system now has a plurality of mutually parallel tubes which extend between two housing walls bounding the first flow path laterally and which are provided with ribs within the first flow path. The tubes are fluidly connected to each other outside the first flow path.
- the present invention is concerned with the problem for a finned tube heat exchanger of the type mentioned, to provide an improved embodiment, which is particularly characterized in that it is comparatively easy to manufacture and / or has improved design freedom.
- the invention is based on the general idea to fluidly connect the tubes within the two housing walls.
- By integrating the fluidic connections in the two housing walls can be dispensed with a plurality of individual, separate connectors, which reduces installation costs.
- the finned tube heat exchanger presented here is suitable for low-cost series production, for example for vehicle applications. This idea can be implemented particularly advantageously in the case of a finned tube heat exchanger in which the first flow path passes through the housing in a longitudinal direction of the housing and in which the first flow path is enclosed by walls of the housing in the circumferential direction of the housing.
- a first inlet of the first flow path and a first outlet of the first flow path are formed at longitudinal ends of the housing.
- the second flow path is now with his Arranged tubes and its ribs in the first flow path and accordingly flows around the first fluid.
- the two housing walls, in which the tubes are fluidly connected to each other, are located opposite the first flow path and may be connected to each other in particular at their side edges via two further housing walls, which are also opposite to the first flow path.
- the two housing walls may contain cavities which are fluidically connected to the respective tubes.
- the cavities then realize the fluidic connection of those tubes which are connected to the respective cavity.
- a particularly inexpensive realizable embodiment is characterized in that the respective housing wall is designed double-walled and has an inner wall facing the first flow path and an outer wall facing away from the first flow path.
- the fluidic connection of the tubes then takes place between the inner wall and the outer wall, that is, within the double-walled housing wall, which may also be referred to below as a double wall.
- the tubes can penetrate the respective inner wall and end in cavities formed between the inner wall and the outer wall.
- Such an embodiment can be produced in a particularly simple and inexpensive manner.
- the tubes may conventionally penetrate the inner wall and be tightly attached thereto.
- the respective outer wall can now simply be mounted on the inner wall in order to form all the necessary fluidic connections in a single operation.
- the cavities formed between the inner wall and the outer wall be formed exclusively in the outer wall, for example by deep drawing or impressions.
- the cavities formed in the outer wall are closed in the assembled state by the inner wall, which may preferably be configured flat in contrast to the outer wall.
- the cavities are formed in the respective outer wall in the form of recesses which are open towards the inner wall.
- the inner wall closes the recesses, whereby the cavities are formed within the double-walled housing wall.
- the depressions can be produced in the outer wall, for example by embossing, by deep-drawing, by pressing, in particular by extrusion, by pressing or by any other suitable shaping process.
- machining or casting processes are conceivable, which are unsuitable due to the higher cost of a series production.
- the cavities may form connection channels, each connecting an outlet end of a single tube to an inlet end of a single other tube.
- These connecting channels then represent individual connecting pieces, which connect exactly two pipes each. This may be advantageous for certain configurations of finned tube heat exchangers.
- the cavities may be configured to form communicating chambers, each connecting the exit ends of a plurality of tubes to the entry ends of a plurality of other tubes.
- communicating chambers each connecting the exit ends of a plurality of tubes to the entry ends of a plurality of other tubes.
- a homogenization in terms of Temperature within the second fluid which may be advantageous in certain applications such finned tube heat exchanger.
- the outer wall may bear against the inner wall in a planar manner or may be fastened to it in a planar manner.
- outer wall and inner wall can be soldered or welded together.
- a welded connection is particularly suitable with which a linear weld can be realized in a particularly simple manner.
- a surface contact can be combined with a linear attachment.
- the respective inner wall may have tube openings, which are each penetrated by a single tube.
- each individual tube to be attached to the inner wall can each be designed with a circumferential collar or collarless.
- the tube openings can each be designed as a passage.
- the collarless configuration is particularly inexpensive realizable. An embodiment with circumferential collar at the respective pipe opening or with a passage at the respective pipe opening simplifies the production of a welded joint or a solder joint between the respective inserted pipe and the inner wall.
- the tubes are each fastened to the respective inner wall, in particular welded or soldered, it can be provided according to an advantageous embodiment that the tubes do not touch the respective outer wall. This simplifies the realization of the cavities between the inner wall and the outer wall.
- each tube within the first flow path may have its own ribs.
- a plurality of tubes have common ribs within the first flow path.
- all tubes within the first flow path have common ribs. The use of common ribs leads in particular to an intensive stiffening of the pipe system within the first flow path.
- the second fluid inlet via which the second fluid enters the pipe system, may be formed on one of the two housing walls, so that the second fluid inlet is outside the first flow path and is comparatively easily accessible.
- the respective housing wall has a cavity formed as a distribution chamber, which fluidly connects the inlet ends of a plurality of tubes with the second fluid inlet.
- the second fluid outlet through which the second fluid exits the pipe system, may be formed on one of the two housing walls and accordingly arranged outside the first fluid path and, accordingly, easily accessible.
- the respective housing wall designed as a collection chamber Cavity, which fluidly connects the outlet ends of a plurality of tubes with the second fluid outlet.
- the tubes are arranged side by side in lines running transversely to the flow direction of the first fluid.
- the tubes can now be aligned with one another in lines which follow one another in the direction of flow of the first fluid or can be arranged offset relative to one another transversely to the flow direction of the first fluid. While the aligned arrangement provides reduced flow resistance, the staggered arrangement results in improved heat transfer.
- the tubes may have a circular cross section or an oval cross section or an elliptical cross section. Basically, other cross-sectional geometries are conceivable, even non-circular.
- tubes extend transversely to the longitudinal direction of the housing through the first flow path and are arranged parallel next to one another both in the longitudinal direction and in the transverse direction of the housing. This results in a particularly compact design, which can transmit much heat on kelinem space.
- the fluidic connections of the tubes are realized so that a plurality of parallel connected tube groups are formed, each having a plurality of tubes connected in series. In this way, relatively large volume flows can be realized with comparatively low flow resistance in the second flow path despite comparatively small cross-sections through which the individual tubes can flow.
- the finned tube heat exchanger presented here can be used particularly advantageously as an exhaust gas heat exchanger or as an exhaust gas recirculation cooler or as a charge air cooler or as a heat exchanger or as an evaporator or condenser of an air conditioning unit or as an evaporator or condenser of a heat recovery unit based on a Rankine cycle, in each case in particular a motor vehicle.
- a finned tube heat exchanger 1 which can be used in a vehicle for example, comprises a housing 2 enclosing a first fluid path, preferably a gas, indicated by arrows, and a first inlet 4 for the first fluid and a first inlet first outlet 5 for the first fluid.
- the housing 2 encloses the first flow path 3 in this case transversely to a flow direction 6 of the first fluid within the housing 2.
- the housing 2 has two spaced apart housing walls 7 and two further housing walls 8, which are also arranged spaced from each other and which the two other housing walls 7 connect together.
- the further housing walls 8 is in the FIGS. 1 and 2 due to the sectional view only the one recognizable.
- all the housing walls 7, 8 are essentially planar, whereby the housing 2 has a substantially rectangular cross-section. Other cross-sectional geometries are basically conceivable.
- the finned tube heat exchanger 1 also comprises a pipe system 9, which forms a second flow path 10, also indicated by arrows, for a second fluid, which is preferably liquid.
- the pipe system 9 has a second inlet 11 for the second fluid and a second outlet 12 for the second fluid.
- the pipe system 9 is coupled heat-transmitting in the interior of the housing 2 with the first flow path 3.
- the pipe system 9 has a multiplicity of tubes 13 which run parallel to one another and thereby extend between the two housing walls 7.
- the tubes 13 extend perpendicular to the planes of the housing walls 7 and perpendicular to the flow direction 6 of the first fluid.
- the tubes 13 extend through the first flow path 3, so that they are acted upon or flowed around by the first fluid 3.
- the tubes 13 are provided within the first flow path 3 with ribs 14.
- the tubes 13 are fluidly connected to each other in a suitable manner. This fluidic connection of the tubes 13 takes place outside of the first flow path 3, namely within the two housing walls 7. For this purpose, cavities 15 are contained in the housing walls 7, which are fluidically connected to the tubes 13.
- the respective housing wall 7 may have a double-walled design according to a preferred embodiment, so that it has an inner wall 16 facing the first flow path 3 and an outer wall 17 facing away from the first flow path 3.
- the fluidic connection between the respective tubes 13 takes place between the inner wall 16 and outer wall 17, ie within the double-walled housing wall 7.
- the tubes 13 penetrate the inner wall 16 and end in the cavities 15, which are formed between the inner wall 16 and the outer wall 17.
- the double-walled housing walls 7 can also be referred to below as double walls 7, while the other housing walls 8 can also be referred to below as side walls 8, which are preferably designed as simple walls.
- the cavities 15 are produced in that recesses 18 are formed in the outer wall 17 which are open towards the inner wall 16 and which are closed by the inner wall 16 in the assembled state of the housing wall 7.
- the depressions 18 are produced by deformation in the outer wall 17.
- the inner wall 16 is expedient just designed.
- the recesses 18 in the outer wall 17 are arranged so that flat contact zones 19 form, in which the outer wall 17 is flat and preferably tight against the inner wall 16.
- outer wall 17 and inner wall 16 can also be fastened to one another, for example via a flat solder connection.
- a line-shaped welded connection can also run.
- the contact zones 19 may be designed linear.
- the inner wall 16 has tube openings 20 through which the tubes 13 are performed.
- a pipe 13 passes through a respective pipe opening 20.
- the tube openings 20 are designed collarless, making them particularly easy to produce, for example by a punching process.
- FIG. 4 shows FIG. 4 an embodiment in which the tube openings 20 are designed as passages, so that they each have a circumferential collar 21.
- the tubes 13 are each attached to the inner wall 16.
- around the respective tube 13 closed circumferential connection points 22 may be formed, which may be designed, for example, as welded joints or as solder joints.
- the arrangement of the tubes 13 takes place so that they do not touch the respective outer wall 17. Accordingly, the tubes 13 end within the cavities 15 spaced from the outer wall 17th
- the respective cavity 15 connects an outlet end 23 of at least one tube 13 to an inlet end 24 of at least one other tube 13 FIG. 1 it can be provided that the cavities 15 form connecting channels 25, each connecting the outlet end 23 of a single tube 13 with the inlet end 24 of a single other tube 13.
- the tubes 13 which are transversely adjacent with respect to the flow direction 6 of the first fluid are fluidically decoupled from one another.
- FIG. 2 shows an embodiment in which the cavities 15 connecting chambers 26 which connect the outlet ends 23 of a plurality of tubes 13 with the inlet ends 24 of a plurality of other tubes 13, respectively.
- the tubes 13 which are adjacent transversely to the flow direction 6 of the first fluid are fluidically coupled to one another. In this way, in particular a homogenization of the temperature in the second fluid can be realized.
- FIGS. 1 and 2 also show a cavity 15 which is formed as a collecting chamber 27, in which the outlet ends 23 of several, transversely to the flow direction 6 of the first fluid adjacent tubes 13 open.
- the second fluid outlet 12 is also connected.
- the collection chamber 27 connects said outlet ends 23 of the tubes 13 to the second fluid outlet 12.
- the second fluid outlet 12 is formed here on the one housing wall 7.
- the second fluid inlet 11 is formed on the opposite housing wall 7. It may be expediently provided that the second fluid inlet 11 is also connected to a cavity 15, which is designed as a distribution chamber 28, however.
- the inlet ends 24 are correspondingly fluidly connected to this distribution chamber 28. Accordingly, the distribution chamber 28 couples the second fluid inlet 11 to the inlet ends 24 of the tubes 13.
- Such distribution chambers 28 allow a parallel interconnection of several pipe groups, which in turn each have a plurality of tubes 13 connected in series. As a result, the volume flow through the second flow path 10 can be increased.
- each tube 13 have their own ribs 14 which follow one another in the tube longitudinal direction spaced from each other.
- the individual ribs 14 may extend parallel to the planes of the housing walls 7.
- the show FIGS. 5b and 5d Embodiments in which a plurality of tubes 13 each have common ribs 14.
- the common ribs 14 can be over several transverse to the flow direction 6 adjacent tubes 13 extend.
- the common ribs 14 may extend over a plurality of parallel to the flow direction 6 consecutive tubes 13.
- the common ribs 14 as in the FIGS. 5b and 5d both over a plurality of transverse to the flow direction 6 adjacent tubes 13 and over several consecutive in the flow direction 6 tubes 13 extend.
- all tubes 13 have common ribs 14 within the first flow path 3, which accordingly extend transversely to the flow direction 6 over all adjacent tubes 13 and in the flow direction 6 over all successive tubes 13.
- These large ribs 14 may also be referred to as lamellae.
- these large ribs 14 or lamellae can extend congruently to the two housing walls 7 and parallel thereto.
- the tubes 13 can be arranged transversely to the flow direction 6 of the first fluid in straight lines 29 side by side. Furthermore, the tubes 13 can be arranged in lines 29 which follow one another directly in the flow direction 6 of the first fluid, according to the embodiments of FIGS FIGS. 5a, 5b . 7a and 7c aligned with each other, so that they also follow one another directly parallel to the flow direction 6 of the first fluid in straight lines, not shown. Alternatively, the tubes 13 according to the FIGS. 5c, 5d . 6 . 7b and 7d in lines 29 which follow one another directly in the flow direction 6 of the first fluid, be arranged offset to each other transversely to the flow direction 6 of the first fluid.
- connection channels 25 results according to FIG. 6 in such a configuration, a diagonal arrangement.
- the tubes 13 may have any desired cross-sectional geometries, circular cross-sections being preferred which allow cylindrical tubes 13.
- the FIGS. 7a and 7b show circular cross sections, while the FIGS. 7c and 7d Oval cross sections or elliptical cross sections show.
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Abstract
Description
Die vorliegende Erfindung betrifft einen Rippenrohrwärmeübertrager, insbesondere für Fahrzeuganwendungen. Außerdem betrifft die vorliegende Erfindung eine Verwendung für einen derartigen Rippenrohrwärmeübertrager.The present invention relates to a finned tube heat exchanger, in particular for vehicle applications. Moreover, the present invention relates to a use for such a finned tube heat exchanger.
Rippenrohrwärmeübertrager charakterisieren sich durch eine Vielzahl paralleler Rohre, die mit Rippen versehen sind, wobei die Rippen und die Rohre von einem ersten Fluid beaufschlagt bzw. umströmt sind und die Rohre von einem zweiten Fluid durchströmt sind.Finned tube heat exchangers are characterized by a plurality of parallel tubes which are provided with ribs, wherein the ribs and the tubes are acted upon by a first fluid and the tubes are flowed through by a second fluid.
Im Einzelnen kann ein derartiger Rippenrohrwärmeübertrager ein Gehäuse aufweisen, das einen ersten Strömungspfad für ein erstes Fluid umschließt und das einen ersten Einlass für das erste Fluid sowie einen ersten Auslass für das erste Fluid aufweist. Ferner umfasst ein derartiger Rippenrohrwärmeübertrager typischerweise ein Rohrsystem, das einen zweiten Strömungspfad für ein zweites Fluid bildet, das einen zweiten Einlass für das zweite Fluid sowie einen zweiten Auslass für das zweite Fluid aufweist und das im Gehäuse wärmeübertragend mit dem ersten Strömungspfad gekoppelt ist. Das Rohrsystem weist nun eine Vielzahl zueinander paralleler Rohre auf, die sich zwischen zwei den ersten Strömungspfad seitlich begrenzenden Gehäusewänden erstrecken und die innerhalb des ersten Strömungspfads mit Rippen versehen sind. Die Rohre sind außerhalb des ersten Strömungspfads miteinander fluidisch verbunden.Specifically, such a finned tube type heat exchanger may include a housing enclosing a first flow path for a first fluid and having a first inlet for the first fluid and a first outlet for the first fluid. Further, such a finned tube type heat exchanger typically includes a tubing system that forms a second fluid second flow path having a second inlet for the second fluid and a second outlet for the second fluid and that is heat coupled within the housing to the first flow path. The pipe system now has a plurality of mutually parallel tubes which extend between two housing walls bounding the first flow path laterally and which are provided with ribs within the first flow path. The tubes are fluidly connected to each other outside the first flow path.
Um die Rohre außerhalb des ersten Strömungspfads fluidisch miteinander zu verbinden, ist es grundsätzlich möglich, die Rohre durch die genannten Gehäusewände hindurchzuführen und an einer vom ersten Strömungspfad abgewandten Außenseite mit U-förmigen Verbindungsstücken zu verbinden. Eine derartige Bauweise ist vergleichsweise aufwändig in der Herstellung. Außerdem ist die gestalterische Freiheit eingeschränkt, da die regelmäßig durch Biegeverformung hergestellten U-förmigen Verbindungsstücke aus Stabilitätsgründen einen Mindestbiegeradius einhalten müssen.In order to fluidly connect the tubes to each other outside the first flow path, it is basically possible to pass the tubes through said housing walls and to connect them to U-shaped connecting pieces on an outer side facing away from the first flow path. Such a construction is relatively expensive to manufacture. Besides, the design is Freedom limited because the regularly produced by bending deformation U-shaped connectors for stability reasons must comply with a minimum bending radius.
Die vorliegende Erfindung beschäftigt sich mit dem Problem für einen Rippenrohrwärmeübertrager der eingangs genannten Art, eine verbesserte Ausführungsform anzugeben, die sich insbesondere dadurch auszeichnet, dass sie vergleichsweise einfach herstellbar ist und/oder eine verbesserte Gestaltungsfreiheit aufweist.The present invention is concerned with the problem for a finned tube heat exchanger of the type mentioned, to provide an improved embodiment, which is particularly characterized in that it is comparatively easy to manufacture and / or has improved design freedom.
Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.
Die Erfindung beruht auf dem allgemeinen Gedanken, die Rohre innerhalb der beiden Gehäusewände fluidisch miteinander zu verbinden. Durch die Integration der fluidischen Verbindungen in die beiden Gehäusewände kann auf eine Vielzahl einzelner, separater Verbindungsstücke verzichtet werden, was die Montagekosten reduziert. Außerdem ergeben sich Vorteile im Hinblick auf die gestalterische Freiheit, da keine Biegeradien von Verbindungsstücken berücksichtigt werden müssen. Insbesondere eignet sich der hier vorgestellte Rippenrohrwärmeübertrager für eine preiswerte Serienfertigung, beispielsweise für Fahrzeuganwendungen. Besonders vorteilhaft lässt sich dieser Gedanke bei einem Rippenrohrwärmeübertrager realisieren, bei dem der erste Strömungspfad das Gehäuse in einer Längsrichtung des Gehäuses durchsetzt und bei dem der erste Strömungspfad von Wänden des Gehäuses in der Umfangsrichtung des Gehäuses, quasi tunnelartig umschlossen ist. Ein erster Einlass des ersten Strömungspfads und ein erster Auslass des ersten Strömungspfads sind dabei an Längsenden des Gehäuses ausgebildet. Der zweite Strömungspfad ist nun mit seinen Rohren und seinen Rippen im ersten Strömungspfad angeordnet und dementsprechend vom ersten Fluid umspült. Die beiden Gehäusewände, in denen die Rohre mit einander fluidisch verbunden sind, liegen sich am ersten Strömungspfad gegenüber und können insbesondere an ihren Seitenrändern über zwei weitere Gehäusewände miteinander verbunden sein, die sich am ersten Strömungspfad ebenfalls gegenüberliegen.The invention is based on the general idea to fluidly connect the tubes within the two housing walls. By integrating the fluidic connections in the two housing walls can be dispensed with a plurality of individual, separate connectors, which reduces installation costs. In addition, there are advantages in terms of design freedom, since no bending radii of connectors must be considered. In particular, the finned tube heat exchanger presented here is suitable for low-cost series production, for example for vehicle applications. This idea can be implemented particularly advantageously in the case of a finned tube heat exchanger in which the first flow path passes through the housing in a longitudinal direction of the housing and in which the first flow path is enclosed by walls of the housing in the circumferential direction of the housing. A first inlet of the first flow path and a first outlet of the first flow path are formed at longitudinal ends of the housing. The second flow path is now with his Arranged tubes and its ribs in the first flow path and accordingly flows around the first fluid. The two housing walls, in which the tubes are fluidly connected to each other, are located opposite the first flow path and may be connected to each other in particular at their side edges via two further housing walls, which are also opposite to the first flow path.
Entsprechend einer vorteilhaften Ausführungsform können die beiden Gehäusewände Hohlräume enthalten, die mit den jeweiligen Rohren fluidisch verbunden sind. Die Hohlräume realisieren dann die fluidische Verbindung derjenigen Rohre, die an den jeweiligen Hohlraum angeschlossen sind.According to an advantageous embodiment, the two housing walls may contain cavities which are fluidically connected to the respective tubes. The cavities then realize the fluidic connection of those tubes which are connected to the respective cavity.
Eine besonders preiswert realisierbare Ausführungsform zeichnet sich dadurch aus, dass die jeweilige Gehäusewand doppelwandig ausgestaltet ist und eine dem ersten Strömungspfad zugewandte Innenwand und eine vom ersten Strömungspfad abgewandte Außenwand aufweist. Die fluidische Verbindung der Rohre erfolgt dann zwischen Innenwand und Außenwand, also innerhalb der doppelwandigen Gehäusewand, die im Folgenden auch als Doppelwand bezeichnet werden kann.A particularly inexpensive realizable embodiment is characterized in that the respective housing wall is designed double-walled and has an inner wall facing the first flow path and an outer wall facing away from the first flow path. The fluidic connection of the tubes then takes place between the inner wall and the outer wall, that is, within the double-walled housing wall, which may also be referred to below as a double wall.
Zweckmäßig können die Rohre die jeweilige Innenwand durchdringen und in Hohlräumen enden, die zwischen Innenwand und Außenwand ausgebildet sind. Eine derartige Ausführungsform lässt sich besonders einfach und preiswert herstellen. Beispielsweise können die Rohre in herkömmlicher Weise die Innenwand durchdringen und daran dicht befestigt sein. Statt einer Montage einer Vielzahl separater Verbindungsstücke kann nun einfach die jeweilige Außenwand an der Innenwand montiert werden, um alle erforderlichen fluidischen Verbindungen in einem einzigen Arbeitsgang auszubilden.Suitably, the tubes can penetrate the respective inner wall and end in cavities formed between the inner wall and the outer wall. Such an embodiment can be produced in a particularly simple and inexpensive manner. For example, the tubes may conventionally penetrate the inner wall and be tightly attached thereto. Instead of mounting a plurality of separate connecting pieces, the respective outer wall can now simply be mounted on the inner wall in order to form all the necessary fluidic connections in a single operation.
Zweckmäßig können die Hohlräume, die zwischen Innenwand und Außenwand ausgebildet sind, ausschließlich in der Außenwand ausgeformt sein, beispielsweise durch Tiefziehen oder durch Einprägungen. Die in der Außenwand ausgeformten Hohlräume sind im montierten Zustand durch die Innenwand verschlossen, die im Unterschied zur Außenwand vorzugsweise eben konfiguriert sein kann.Suitably, the cavities formed between the inner wall and the outer wall, be formed exclusively in the outer wall, for example by deep drawing or impressions. The cavities formed in the outer wall are closed in the assembled state by the inner wall, which may preferably be configured flat in contrast to the outer wall.
Die Hohlräume sind in der jeweiligen Außenwand in Form von Vertiefungen ausgeformt, die zur Innenwand hin offen sind. Im zusammengebauten Zustand verschließt jedoch die Innenwand die Vertiefungen, wodurch die Hohlräume innerhalb der doppelwandigen Gehäusewand gebildet werden. Die Vertiefungen lassen sich in der Außenwand beispielsweise durch Prägen, durch Tiefziehen, durch Pressen, insbesondere durch Fließpressen, durch Drücken oder durch einen beliebigen anderen geeigneten formgebenden Vorgang herstellen. Neben diesen Umformvorgängen, die vergleichsweise preiswert realisierbar sind, sind grundsätzlich auch spanabhebende Verfahren oder Gussverfahren denkbar, die jedoch aufgrund der höheren Kosten für eine Serienproduktion ungeeignet sind.The cavities are formed in the respective outer wall in the form of recesses which are open towards the inner wall. In the assembled state, however, the inner wall closes the recesses, whereby the cavities are formed within the double-walled housing wall. The depressions can be produced in the outer wall, for example by embossing, by deep-drawing, by pressing, in particular by extrusion, by pressing or by any other suitable shaping process. In addition to these forming processes, which are relatively inexpensive to implement, in principle also machining or casting processes are conceivable, which are unsuitable due to the higher cost of a series production.
Entsprechend einer vorteilhaften Ausführungsform können die Hohlräume Verbindungskanäle bilden, die jeweils ein Austrittsende eines einzigen Rohrs mit einem Eintrittsende eines einzigen anderen Rohrs verbinden. Diese Verbindungskanäle repräsentieren dann einzelne Verbindungsstücke, die jeweils genau zwei Rohre miteinander verbinden. Dies kann für bestimmte Konfigurationen von Rippenrohrwärmeübertragern vorteilhaft sein.According to an advantageous embodiment, the cavities may form connection channels, each connecting an outlet end of a single tube to an inlet end of a single other tube. These connecting channels then represent individual connecting pieces, which connect exactly two pipes each. This may be advantageous for certain configurations of finned tube heat exchangers.
Alternativ ist es ebenso möglich, die Hohlräume so zu konfigurieren, dass sie Verbindungskammern bilden, die jeweils die Austrittsenden von mehreren Rohren mit den Eintrittsenden von mehreren anderen Rohren verbinden. Innerhalb derartiger Verbindungskammern kann eine Homogenisierung hinsichtlich der Temperatur innerhalb des zweiten Fluids erfolgen, was bei bestimmten Anwendungen derartiger Rippenrohrwärmeübertrager vorteilhaft sein kann.Alternatively, it is also possible to configure the cavities to form communicating chambers, each connecting the exit ends of a plurality of tubes to the entry ends of a plurality of other tubes. Within such connecting chambers, a homogenization in terms of Temperature within the second fluid, which may be advantageous in certain applications such finned tube heat exchanger.
Bei einer anderen Ausführungsform kann die Außenwand an der Innenwand flächig anliegen bzw. flächig daran befestigt sein. Beispielsweise können Außenwand und Innenwand miteinander verlötet oder verschweißt sein. Alternativ ist es ebenso möglich, die Außenwand an der Innenwand linienförmig zur Anlage zu bringen bzw. daran zu befestigen. Hierzu eignet sich in besonderer Weise eine Schweißverbindung, mit der sich besonders einfach eine linienförmige Schweißnaht realisieren lässt. Auch ist eine flächige Kontaktierung mit einer linienförmigen Befestigung kombinierbar.In another embodiment, the outer wall may bear against the inner wall in a planar manner or may be fastened to it in a planar manner. For example, outer wall and inner wall can be soldered or welded together. Alternatively, it is also possible to bring the outer wall on the inner wall linearly to the plant or to attach it. For this purpose, a welded connection is particularly suitable with which a linear weld can be realized in a particularly simple manner. Also, a surface contact can be combined with a linear attachment.
Zweckmäßig kann die jeweilige Innenwand Rohröffnungen aufweisen, die jeweils von einem einzigen Rohr durchsetzt sind. Somit ist letztlich jedes einzelne Rohr an der Innenwand zu befestigen. Insbesondere können die Rohröffnungen jeweils mit einem umlaufenden Kragen oder aber kragenlos ausgestaltet sein. Ebenso können die Rohröffnungen jeweils als Durchzug ausgestaltet sein. Die kragenlose Konfiguration ist besonders preiswert realisierbar. Eine Ausführungsform mit umlaufendem Kragen an der jeweiligen Rohröffnung bzw. mit einem Durchzug an der jeweiligen Rohröffnung vereinfacht die Herstellung einer Schweißverbindung bzw. einer Lötverbindung zwischen dem jeweiligem durchgesteckten Rohr und der Innenwand.Suitably, the respective inner wall may have tube openings, which are each penetrated by a single tube. Thus, ultimately, each individual tube to be attached to the inner wall. In particular, the tube openings can each be designed with a circumferential collar or collarless. Likewise, the tube openings can each be designed as a passage. The collarless configuration is particularly inexpensive realizable. An embodiment with circumferential collar at the respective pipe opening or with a passage at the respective pipe opening simplifies the production of a welded joint or a solder joint between the respective inserted pipe and the inner wall.
Während die Rohre jeweils an der jeweiligen Innenwand befestigt sind, insbesondere verschweißt oder verlötet, kann gemäß einer vorteilhaften Ausführungsform vorgesehen sein, dass die Rohre die jeweilige Außenwand nicht berühren. Dies vereinfacht die Realisierung der Hohlräume zwischen der Innenwand und der Außenwand.While the tubes are each fastened to the respective inner wall, in particular welded or soldered, it can be provided according to an advantageous embodiment that the tubes do not touch the respective outer wall. This simplifies the realization of the cavities between the inner wall and the outer wall.
Für die Verrippung der Rohre ergeben sich unterschiedliche Möglichkeiten, die je nach Anwendungsform des Rippenrohrwärmeübertragers von Vorteil sein können. Beispielsweise kann jedes Rohr innerhalb des ersten Strömungspfads eigene Rippen aufweisen. Alternativ kann vorgesehen sein, dass mehrere Rohre innerhalb des ersten Strömungspfads gemeinsame Rippen besitzen. Ferner ist es ebenso möglich, dass alle Rohre innerhalb des ersten Strömungspfads gemeinsame Rippen aufweisen. Die Verwendung gemeinsamer Rippen führt insbesondere zu einer intensiven Aussteifung des Rohrsystems innerhalb des ersten Strömungspfads.For the ribbing of the tubes, there are different possibilities, which may be advantageous depending on the application form of the finned tube heat exchanger. For example, each tube within the first flow path may have its own ribs. Alternatively it can be provided that a plurality of tubes have common ribs within the first flow path. Furthermore, it is also possible that all tubes within the first flow path have common ribs. The use of common ribs leads in particular to an intensive stiffening of the pipe system within the first flow path.
Sofern allen Rohren gemeinsame Rippen zugeordnet sind, können diese Rippen nach Art von Lamellen parallel und/oder deckungsgleich zu den beiden Gehäusewänden verlaufen. Hierdurch ergibt sich eine effektive und widerstandsarme Strömungsführung für das erste Fluid im ersten Strömungspfad.If all tubes are assigned common ribs, these ribs can run in the manner of lamellae parallel and / or congruent to the two housing walls. This results in an effective and low-resistance flow guidance for the first fluid in the first flow path.
Gemäß einer anderen vorteilhaften Ausführungsform kann der zweite Fluideinlass, über den das zweite Fluid in das Rohrsystem eintritt, an einer der beiden Gehäusewände ausgebildet sein, so dass sich der zweite Fluideinlass außerhalb des ersten Strömungspfads befindet und vergleichsweise gut zugänglich ist. Insbesondere kann dabei vorgesehen sein, dass die jeweilige Gehäusewand einen als Verteilerkammer ausgebildeten Hohlraum aufweist, der die Eintrittsenden von mehreren Rohren mit dem zweiten Fluideinlass fluidisch verbindet.According to another advantageous embodiment, the second fluid inlet, via which the second fluid enters the pipe system, may be formed on one of the two housing walls, so that the second fluid inlet is outside the first flow path and is comparatively easily accessible. In particular, it can be provided that the respective housing wall has a cavity formed as a distribution chamber, which fluidly connects the inlet ends of a plurality of tubes with the second fluid inlet.
Zusätzlich oder alternativ kann der zweite Fluidauslass, durch den das zweite Fluid aus dem Rohrsystem austritt, an einer der beiden Gehäusewände ausgebildet sein und dementsprechend außerhalb des ersten Fluidpfads angeordnet und dementsprechend einfach zugänglich sein. Auch hier kann zweckmäßig vorgesehen sein, dass die jeweilige Gehäusewand einen als Sammelkammer ausgebildeten Hohlraum aufweist, der die Austrittsenden von mehreren Rohren mit dem zweiten Fluidauslass fluidisch verbindet.Additionally or alternatively, the second fluid outlet, through which the second fluid exits the pipe system, may be formed on one of the two housing walls and accordingly arranged outside the first fluid path and, accordingly, easily accessible. Again, it may be appropriate to provide that the respective housing wall designed as a collection chamber Cavity, which fluidly connects the outlet ends of a plurality of tubes with the second fluid outlet.
Gemäß einer anderen zweckmäßigen Ausführungsform sind die Rohre in quer zur Strömungsrichtung des ersten Fluids verlaufenden Linien nebeneinander angeordnet. Zweckmäßig können nun die Rohre in Linien, die in der Strömungsrichtung des ersten Fluids aufeinander folgen, zueinander fluchten oder quer zur Strömungsrichtung des ersten Fluids zueinander versetzt angeordnet sein. Während die fluchtende Anordnung einen reduzierten Durchströmungswiderstand bietet, führt die versetzte Anordnung zu einem verbesserten Wärmeübergang.According to another expedient embodiment, the tubes are arranged side by side in lines running transversely to the flow direction of the first fluid. Expediently, the tubes can now be aligned with one another in lines which follow one another in the direction of flow of the first fluid or can be arranged offset relative to one another transversely to the flow direction of the first fluid. While the aligned arrangement provides reduced flow resistance, the staggered arrangement results in improved heat transfer.
Die Rohre können einen kreisförmigen Querschnitt oder einen ovalen Querschnitt oder einen elliptischen Querschnitt aufweisen. Grundsätzlich sind auch andere Querschnittsgeometrien denkbar, auch unrunde.The tubes may have a circular cross section or an oval cross section or an elliptical cross section. Basically, other cross-sectional geometries are conceivable, even non-circular.
Eine vorteilhafte Auführungsform ergibt sich, wenn sich die Rohre quer zur Längsrichtung des Gehäuses durch den ersten Strömungspfad hindurch erstrecken und sowohl in der Längsrichtung als auch der Querrichtung des Gehäuses parallel nebeneinander angeordnet sind. Hierdurch ergibt sich eine besonders kompakte Bauform, die auf kelinem Raum viel Wärme übertragen kann.An advantageous embodiment results when the tubes extend transversely to the longitudinal direction of the housing through the first flow path and are arranged parallel next to one another both in the longitudinal direction and in the transverse direction of the housing. This results in a particularly compact design, which can transmit much heat on kelinem space.
Zusätzlich oder alternativ kann vorgesehen sein, dass die fluidischen Verbindungen der Rohre so realisiert sind, dass mehrere parallel geschaltete Rohrgruppen gebildet sind, die jeweils mehrere in Reihe geschaltete Rohre aufweisen. Auf diese Weise lassen sich im zweiten Strömungspfad trotz vergleichsweise kleiner durchströmbarer Querschnitte der einzelnen Rohre relativ große Volumenströme bei vergleichsweise geringem Strömungswiderstand realisieren.Additionally or alternatively it can be provided that the fluidic connections of the tubes are realized so that a plurality of parallel connected tube groups are formed, each having a plurality of tubes connected in series. In this way, relatively large volume flows can be realized with comparatively low flow resistance in the second flow path despite comparatively small cross-sections through which the individual tubes can flow.
Besonders vorteilhaft lässt sich der hier vorgestellte Rippenrohrwärmeübertrager als Abgaswärmeübertrager oder als Verdampfer oder als Abgasrückführkühler oder als Ladeluftkühler oder als Kondensator oder als Heizungswärmeübertrager oder als Verdampfer oder Kondensator einer Klimatisierungseinrichtung oder als Verdampfer oder Kondensator einer auf einem Rankine-Kreisprozess basierenden Abwärmenutzungsvorrichtung verwenden, jeweils insbesondere in einem Kraftfahrzeug, verwenden.The finned tube heat exchanger presented here can be used particularly advantageously as an exhaust gas heat exchanger or as an exhaust gas recirculation cooler or as a charge air cooler or as a heat exchanger or as an evaporator or condenser of an air conditioning unit or as an evaporator or condenser of a heat recovery unit based on a Rankine cycle, in each case in particular a motor vehicle.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Es zeigen, jeweils schematisch
- Fig. 1
- eine stark vereinfachte, geschnittene isometrische Prinzipdarstellung eines Rippenrohrwärmeübertragers,
- Fig. 2
- eine Ansicht wie in
, jedoch bei einer anderen Ausführungsform des Rippenrohrwärmeübertragers,Figur 1 - Fig. 3
- ein Längsschnitt des Rippenrohrwärmeübertragers im Bereich einer Gehäusewand,
- Fig. 4
- ein Längsschnitt wie in
, jedoch bei einer anderen Ausführungsform,Figur 3 - Fig. 5
- stark vereinfachte, prinzipielle Schnittansichten des Rippenrohrwärmeübertragers im Bereich eines Rohrsystems bei unterschiedlichen Ausführungsformen a-d,
- Fig. 6
- eine vereinfachte isometrische Ansicht des Rippenrohrwärmeübertragers wie in
den Figuren 1 und2 , jedoch bei einer weiteren Ausführungsform, - Fig. 7
- stark vereinfachte Schnittansichten des Rippenrohrwärmeübertragers im Bereich des Rohrsystems bei unterschiedlichen Ausführungsformen a-d.
- Fig. 1
- a simplified, simplified isometric schematic representation of a finned tube heat exchanger,
- Fig. 2
- a view like in
FIG. 1 but in another embodiment of the finned tube heat exchanger, - Fig. 3
- a longitudinal section of the finned tube heat exchanger in the region of a housing wall,
- Fig. 4
- a longitudinal section as in
FIG. 3 but in another embodiment, - Fig. 5
- highly simplified, schematic sectional views of the finned tube heat exchanger in the region of a pipe system in different embodiments ad,
- Fig. 6
- a simplified isometric view of the finned tube heat exchanger as in the
FIGS. 1 and2 but in another embodiment, - Fig. 7
- highly simplified sectional views of the Rippenrohrwärmeübertragers in the region of the pipe system in different embodiments ad.
Entsprechend den
Der Rippenrohrwärmeübertrager 1 umfasst außerdem ein Rohrsystem 9, das einen ebenfalls durch Pfeile angedeuteten zweiten Strömungspfad 10 für ein zweites Fluid bildet, das vorzugsweise flüssig ist. Das Rohrsystem 9 weist einen zweiten Einlass 11 für das zweite Fluid sowie einen zweiten Auslass 12 für das zweite Fluid auf. Das Rohrsystem 9 ist im Inneren des Gehäuses 2 mit dem ersten Strömungspfad 3 wärmeübertragend gekoppelt.The finned
Das Rohrsystem 9 weist eine Vielzahl von Rohren 13 auf, die zueinander parallel verlaufen und sich dabei zwischen den beiden Gehäusewänden 7 erstrecken. Die Rohre 13 erstrecken sich dabei senkrecht zu den Ebenen der Gehäusewände 7 und senkrecht zur Strömungsrichtung 6 des ersten Fluids. Somit erstrecken sich die Rohre 13 durch den ersten Strömungspfad 3 hindurch, so dass sie vom ersten Fluid 3 beaufschlagt bzw. umströmt sind. Um den Wärmeübergang zwischen erstem Fluid und zweitem Fluid zu verbessern, sind die Rohre 13 innerhalb des ersten Strömungspfads 3 mit Rippen 14 versehen.The
Zur Realisierung des zweiten Strömungspfads 10 sind die Rohre 13 auf geeignete Weise fluidisch miteinander verbunden. Diese fluidische Verbindung der Rohre 13 erfolgt dabei außerhalb des ersten Strömungspfads 3, und zwar innerhalb der beiden Gehäusewände 7. Hierzu sind in den Gehäusewänden 7 Hohlräume 15 enthalten, die mit den Rohren 13 fluidisch verbunden sind.To realize the
Gemäß den
Zweckmäßig sind die Hohlräume 15 dadurch hergestellt, dass in der Außenwand 17 Vertiefungen 18 ausgeformt sind, die zur Innenwand 16 hin offen sind und die im zusammengebauten Zustand der Gehäusewand 7 durch die Innenwand 16 verschlossen sind. Beispielsweise sind die Vertiefungen 18 durch Umformung in der Außenwand 17 hergestellt. Hierdurch erhält die Außenwand 17 eine beulenartige Struktur, wobei sich die Außenwand 17 nach wie vor in einer Ebene erstreckt. Im Unterschied dazu ist die Innenwand 16 zweckmäßig eben ausgestaltet. Gemäß den
Die Innenwand 16 besitzt Rohröffnungen 20, durch welche die Rohre 13 durchgeführt sind. Dabei durchsetzt je ein Rohr 13 je eine Rohröffnung 20. Im Beispiel der
Gemäß den
Alternativ dazu zeigt
Die
Derartige Verteilerkammern 28 ermöglichen eine parallele Verschaltung mehrer Rohrgruppen, die ihrerseits jeweils mehrere in Reihe geschaltete Rohre 13 aufweisen. Hierdurch kann der Volumenstrom durch den zweiten Strömungspfad 10 vergrößert werden.
Entsprechend den
Wie insbesondere den
Gemäß den
Claims (15)
dadurch gekennzeichnet,
dass die beiden Gehäusewände (7) Hohlräume (15) enthalten, die mit den jeweiligen Rohren (13) fluidisch verbunden sind.Finned tube heat exchanger according to claim 1,
characterized,
that the two housing walls contain (7) cavities (15) which are fluidly connected to the respective tubes (13).
dadurch gekennzeichnet,
dass die jeweilige Gehäusewand (7) doppelwandig ausgestaltet ist und eine dem ersten Strömungspfad (3) zugewandte Innenwand (16) und eine vom ersten Strömungspfad (3) abgewandte Außenwand (17) aufweist, wobei die jeweiligen Rohre (13) zwischen Außenwand (17) und Innenwand (16) miteinander fluidisch verbunden sind.Finned tube heat exchanger according to claim 1 or 2,
characterized,
that the respective housing wall (7) is double constructed and facing towards the first flow path (3) inner wall (16) and facing away from a the first flow path (3) outer wall (17), wherein the respective tubes (13) between the outer wall (17) and inner wall (16) are fluidly connected to each other.
dadurch gekennzeichnet,
dass die Rohre (13) die jeweilige Innenwand (16) durchdringen und in Hohlräumen (15) enden, die zwischen Innenwand (16) und Außenwand (17) ausgebildet sind.Finned tube heat exchanger according to claim 3,
characterized,
that the tubes (13) penetrate the respective inner wall (16) and ends in cavities (15) between the inner wall (16) and outer wall (17) are formed.
dadurch gekennzeichnet,
dass die Hohlräume (15) in der Außenwand (17) ausgeformt sind und durch die Innenwand (16) verschlossen sind.Finned tube heat exchanger according to claim 4,
characterized,
in that the cavities (15) are formed in the outer wall (17) and are closed by the inner wall (16).
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
dass die jeweilige Innenwand (16) Rohröffnungen (20) aufweist, die jeweils von einem einzigen Rohr (13) durchsetzt sind, wobei die Rohröffnungen (20) jeweils kragenlos oder mit umlaufendem Kragen (21) oder als Durchzüge ausgestaltet sind.Finned tube heat exchanger according to one of claims 3 to 7,
characterized,
in that the respective inner wall (16) has tube openings (20) which in each case are penetrated by a single tube (13), wherein the tube openings (20) are each configured collar-free or with circumferential collar (21) or as passages.
dadurch gekennzeichnet,
dass die Rohre (13) jeweils an der jeweiligen Innenwand (16) befestigt sind und die jeweilige Außenwand (17) nicht berühren.Finned tube heat exchanger according to one of claims 3 to 8,
characterized,
that the tubes (13.) are each at the respective inner wall (16) are fastened and the respective outer wall (17) do not touch.
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
dass sich die Rohre (13) quer zur Längsrichtung des Gehäuses (2) durch den ersten Strömungspfad (3) hindurch erstrecken und sowohl in der Längsrichtung als auch der Querrichtung des Gehäuses (2) parallel nebeneinander angeordnet sind.Finned tube heat exchanger according to one of the claims 1 to 12,
characterized,
in that the tubes (13) extend transversely to the longitudinal direction of the housing (2) through the first flow path (3) and are arranged parallel next to one another in both the longitudinal direction and the transverse direction of the housing (2).
dadurch gekennzeichnet,
dass die fluidischen Verbindungen der Rohre (13) so realisiert sind, dass mehrere parallel geschaltete Rohrgruppen gebildet sind, die jeweils mehrere in Reihe geschaltete Rohre (13) aufweisen.Finned tube heat exchanger according to one of the claims 1 to 13,
characterized,
in that the fluidic connections of the tubes (13) are realized in such a way that a plurality of tube groups connected in parallel are formed, each of which has several tubes (13) connected in series.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011003609A DE102011003609A1 (en) | 2011-02-03 | 2011-02-03 | Finned tube heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2485007A2 true EP2485007A2 (en) | 2012-08-08 |
EP2485007A3 EP2485007A3 (en) | 2014-06-18 |
Family
ID=45558532
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12151556.3A Withdrawn EP2485007A3 (en) | 2011-02-03 | 2012-01-18 | Heat exchanger with finned tubes |
Country Status (4)
Country | Link |
---|---|
US (1) | US9494367B2 (en) |
EP (1) | EP2485007A3 (en) |
JP (1) | JP2012163324A (en) |
DE (1) | DE102011003609A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2896925A1 (en) * | 2013-12-24 | 2015-07-22 | LG Electronics Inc. | Heat exchanger |
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WO2012027688A1 (en) * | 2010-08-26 | 2012-03-01 | Modine Manufacturing Company | Waste heat recovery system and method of operating the same |
JP5796563B2 (en) * | 2011-11-29 | 2015-10-21 | 株式会社デンソー | Heat exchanger |
KR101400833B1 (en) * | 2012-12-26 | 2014-05-29 | 주식회사 경동나비엔 | Pin-tube type heat exchanger |
EP3246647B1 (en) * | 2016-05-19 | 2019-10-30 | Borgwarner Emissions Systems Spain, S.L.U. | Heat exchange device |
US20170356674A1 (en) * | 2016-06-13 | 2017-12-14 | Laars Heating Systems Company | Water management header for a boiler or water heater |
WO2018142460A1 (en) * | 2017-01-31 | 2018-08-09 | 三菱電機株式会社 | Heat exchanger and refrigeration cycle apparatus |
US10684080B2 (en) * | 2017-07-19 | 2020-06-16 | General Electric Company | Additively manufactured heat exchanger |
DE102017219433B4 (en) * | 2017-10-30 | 2022-08-11 | Hanon Systems | Heat exchanger for an internal combustion engine |
EP3842723B1 (en) * | 2019-12-23 | 2024-12-18 | Hamilton Sundstrand Corporation | Two-stage fractal heat exchanger |
JP7437418B2 (en) * | 2019-12-24 | 2024-02-22 | 東芝キヤリア株式会社 | Heat exchanger and refrigeration cycle equipment |
KR20240024103A (en) * | 2021-05-20 | 2024-02-23 | 인터갈락틱 스페이스웍스, 엘엘씨 | Refrigerant heat exchanger with integrated multi-pass and flow distribution technology |
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DE3528499C1 (en) * | 1985-08-08 | 1987-03-12 | Konvekta Gmbh | Heat exchanger device with heat exchanger tubes and sheet-shaped fins |
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JP3818270B2 (en) * | 2003-04-17 | 2006-09-06 | 株式会社デンソー | Heat exchanger |
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2011
- 2011-02-03 DE DE102011003609A patent/DE102011003609A1/en not_active Withdrawn
-
2012
- 2012-01-18 EP EP12151556.3A patent/EP2485007A3/en not_active Withdrawn
- 2012-02-01 JP JP2012019906A patent/JP2012163324A/en active Pending
- 2012-02-02 US US13/364,635 patent/US9494367B2/en not_active Expired - Fee Related
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Title |
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None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2896925A1 (en) * | 2013-12-24 | 2015-07-22 | LG Electronics Inc. | Heat exchanger |
US10156406B2 (en) | 2013-12-24 | 2018-12-18 | Lg Electronics Inc. | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
JP2012163324A (en) | 2012-08-30 |
US20120199327A1 (en) | 2012-08-09 |
EP2485007A3 (en) | 2014-06-18 |
US9494367B2 (en) | 2016-11-15 |
DE102011003609A1 (en) | 2012-08-09 |
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