EP0633444B1 - Heat exchanger with several parallel exchange tubes - Google Patents
Heat exchanger with several parallel exchange tubes Download PDFInfo
- Publication number
- EP0633444B1 EP0633444B1 EP94110457A EP94110457A EP0633444B1 EP 0633444 B1 EP0633444 B1 EP 0633444B1 EP 94110457 A EP94110457 A EP 94110457A EP 94110457 A EP94110457 A EP 94110457A EP 0633444 B1 EP0633444 B1 EP 0633444B1
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- EP
- European Patent Office
- Prior art keywords
- ribs
- heat exchanger
- cross
- exchanger tube
- flow
- 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.)
- Expired - Lifetime
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- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000003990 capacitor Substances 0.000 abstract description 12
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 238000011109 contamination Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
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Classifications
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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
- F28F1/128—Fins with openings, e.g. louvered fins
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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
- F28D1/0535—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
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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
- F28F2215/00—Fins
- F28F2215/08—Fins with openings, e.g. louvers
Definitions
- the invention relates to a heat exchanger made of several parallel to each other arranged exchanger tubes, the cross section for the passage of a of the media involved in the heat exchange is large in relation to the height Has width and which to form a variety of perpendicular to Longitudinal direction of the exchanger tube extending flow channels for the other medium involved in heat exchange on both flat sides Ribs from a multiply deflected, opening and on Exchanger ribbed belt are provided.
- a heat exchanger of this type is known from EP-A-0 546 334.
- the one here Exchanger tubes are used in a device with the fins provided, which are formed from a ribbed band, which in front of the Fastening on the flat sides of the respective exchanger tube multiple deflections receives the required rib shape. Subsequently the ribbed belt thus shaped is attached to the respective one Flat side of the exchanger tube.
- those made from an endless ribbed belt and one each over the Length of the flat sides with continuously formed channel-forming ribs Features in the form of lateral offsets. In this way should have an increased degree of turbulence in the medium flowing through the channels generated to increase the heat transfer.
- a disadvantage of heat exchangers of this type is the relatively high tendency to become contaminated in the channels formed by the ribs. By the characteristics this tendency to contamination is shown in the form of individual lateral offsets still increased, because dirt particles are particularly easy in these places can fix what with progressive operation of the heat exchanger can lead to complete closure of the channel concerned. Hereby becomes an undesirable local deterioration in heat transfer behavior of the heat exchanger.
- the invention is therefore based on the object of further developing the known heat exchanger in such a way that the influence of any contamination on the heat transfer performance of the heat exchanger is reduced.
- the openings of the Ribs of adjacent exchanger tubes are arranged.
- the flow exchange between the cross sections divided by the ribs is further improved in that the side surfaces of the ribs in Area of the rib base are provided with additional openings, the Opening cross sections are each smaller than the cross section of through two adjacent ribs formed flow channels.
- the additional openings are preferably located halfway between two successive openings.
- a particularly good connection between the ribbed belt and the respective one Exchanger tube is achieved when according to a preferred embodiment the ribbed band is folded approximately rectangular, so that the Deflection of flat surfaces for contact with the flat sides of the exchanger tube or on the appropriately designed surfaces of the ribbed belt of the neighboring exchanger tube. This also allows the improve mutual support between adjacent exchanger tubes.
- Another embodiment of the heat exchanger is characterized by partly lowered, partly raised shapes in the side surfaces of the Ribs. These characteristics create or intensify a turbulence of the flowing medium, which increases the heat transfer performance can be increased.
- the ribbed band is over a linear, continuous welding on the flat sides of the Exchanger tube attached. This results in a particularly good one metallic connection between the parts and thus a high heat transfer between the exchanger tube and the fins.
- the rib band is preferably welded to the respective one Flat side of the exchanger tube by means of a capacitor discharge welding process produced.
- This welding process enables when merging the ribbed plate and the exchanger tube Broad sides of the base body to the contour of the respective rib base Adjust without gaps.
- the pressure required for this is two Electrodes generated, which are part of the capacitor discharge welding machine are. While one electrode in the rib foot area between two adjacent ribs, the on the other inside of the base body and forms here an abutment. In this way the is for a gapless touch connecting parts taken care of so that after unloading Capacitor discharge welding machine capacitors a linear Fastening the ribs on the base body and thus a very good heat transfer between these parts is achieved.
- AT-A-380 104 was in the broadest sense a heat exchanger to be addressed plate radiator known in which by appropriate Forming two interconnected radiator plates a plurality of vertically extending channels for the heat-emitting medium is. The channels are in a row one behind the other. In contrast to Heat exchangers according to the invention run through a convector plate formed flow channels parallel to those formed by the radiator plate Channels for the heat-emitting medium.
- the one from AT-A-380 104 known plate radiator differs not only in terms of Use of several exchanger tubes arranged parallel to each other in relation to the height of the very large width of the flow cross-section of the subject of the invention, but also with regard to the assignment of on the one hand from the heat emitting and on the other hand from the heat absorbing Medium flow channels. Because of these fundamental differences the plate radiator known from AT-A-380 104 has no relation to the problem underlying the present invention, namely the influence of any contamination on the heat transfer performance to reduce.
- NL-A-89 00 293 was finally a generic heat exchanger known, but which has no openings, the cross section at least the size of the flow cross-section through two adjacent ribs of the same exchanger tube formed flow channel corresponds.
- the known heat exchanger are narrow slots alternately over the entire area of the folded ribs formed, that is, both in Head area as well as in the side areas and in the foot area.
- the heat exchanger shown in Fig. 1 consists of exchanger tubes 1, which are arranged parallel to each other in the manner of a package. 1 are for reasons of clarity, only two such exchanger tubes 1 shown.
- Fig. 1 shows that the cross section of the exchanger tubes 1 for the Passage of one of the media involved in the heat exchange in proportion to the height H has a large width B.
- the longitudinal edges of the exchanger tube thus formed 1 are rounded, so that the total cross section of a elongated oval.
- the other medium is cross-flow over the outer flat sides 2 of the exchanger tubes 1 out.
- the ribs 3 are made from an endless sheet by repeated bending manufactured so that, viewed in the longitudinal direction of the exchanger tube 1, the Ribs 3 line up in a meandering pattern. This is particularly good in Fig. 2 recognizable.
- the meandering of the ribbed band 4 thus formed are, as also Fig. 2 reveals a rectangular shape, so that the exchanger tube 1 facing and the deflections 5 facing away from the exchanger tube 1 each form flat surfaces 6.
- the surfaces 6 serve a particular purpose good connection of the rib base area with the flat side 2 of the Exchanger tube 1.
- the material for the ribbed belt 4 is e.g. Steel sheet with a thickness of 0.1 to 0.4 mm, which on both sides with a thin aluminum layer is plated.
- the ribs 3 consisting of the rib band 4 deflected in a meandering shape are located on both sides of the exchanger tubes 1.
- the so designed Exchanger tubes 1 can then be assembled into any packages, the attachment and spacing of the individual exchanger tubes 1 to each other at their ends.
- the diversions 5 at the end of the rib 3, the smallest possible distance to the opposite Deflections 5 of the adjacent exchanger tube 1 exhibit.
- the distance must not be so small that the danger a contact between the fins 3 of the adjacent exchanger tubes 1 exists.
- Capacitor discharge welding is a special one Type of resistance welding where the energy required during welding is not taken directly from the mains via a transformer is, but a capacitor bank that acts as an energy storage outside of Welding time is loaded.
- the advantage of capacitor discharge welding consists in the suitability to use different materials, e.g. Steel / aluminum. You can also use this procedure also weld surface-treated materials, e.g. galvanized or aluminized sheets without causing surface damage is coming.
- the capacitor discharge welding process uses two of them independent electrodes 7.8.
- the upper electrode 7 available five times and consists of disc-shaped individual electrodes from a suitable electrode material, e.g. CuCrZr.
- the lower one Electrode 8 is designed as a plate, which extends over the entire width of the Exchanger tube 1 extends and has exactly its inner profile. In this way, the lower electrode 8 also serves to guide the base body of the exchanger tube 1 during the welding process. Especially but the lower electrode 8 forms an abutment for those of the upper Electrodes 7 generated pressing forces.
- the lower electrode 8 is more suitable for this Way with the interposition of insulation on the used Supported welding machine.
- the alignment of the upper electrodes 7 is such that this with its narrow end faces exactly between two neighboring Ribs 3 can retract until they are located at the rib base area between them get to the inside of surface 6.
- Spring elements 7a cause a defined pressing force, that of the abutment serving lower electrode 8 is recorded.
- the capacitors of the welding machine are discharged, which temporarily causes high energy from the upper electrodes 7 of the lower electrode 8 flows.
- the finished Heat exchanger parts come out of the cold after welding Machine, therefore retain their shape and show no tendency to warp or change of shape.
- Figures 4 and 5 show exchanger tube 1 and fins 3 immediately before joining them together, the surfaces coming into contact with one another are provided with a surface structure designed in the pattern repeat.
- the outer flat side 2 of the Exchanger tube 1 with a fine, even corrugation 8 with groove depths 0.1 to 0.3 mm.
- the 5 the surface structure designed in the repeat at the bottom of the rib foot areas, i.e. in the area of the deflection 5. For this purpose, these are embossed in the form of humps projecting downwards or surveys 8a.
- the rib band 4 is a continuous, meandering folded Sheet shown without further structures.
- the ribs do not form a closed line over their entire length Channels, but they are evenly spaced with openings 9 provided, as the exact representations Fig. 1, Fig. 2, Fig. 4 and Fig. 5 show.
- These openings 9 are in the area of the flat side 2 of the Exchanger tube 1 arranged deflections 5, i.e. in the area the end of the ribs. A mass transfer can take place via these openings 9 with which flowing through the ribs 3 of the respectively adjacent exchanger tube 1 Medium take place.
- the flow arrows A illustrate the flow entry into the area of the ribs.
- contamination S in one of the cross-sections it would not be possible for the flow to pass in this area a heat exchanger of the known type, the flow through this cross section be completely prevented.
- the flow can the path of a redirection U go.
- the flow passes through the opening in front of the obstacle 9 in that cross-section through the ribs 3 of the adjacent Exchanger tube 1 is formed.
- part of the flow can then pass over the following Flow back opening 9 into the original cross section, so that the Flow ultimately leaves the heat exchanger evenly.
- each of the openings 9 is at least the size of the cross-section through which it flows Q between two adjacent ribs 3.
- the individual ribs 3 are provided with additional geometric structures, which serve the medium flowing through or flowing past to mix or create turbulence.
- additional geometric structures which serve the medium flowing through or flowing past to mix or create turbulence.
- the ribs 3 and others Characteristics 10 in the form of lateral bulges provided that alternate to one side and to the other side of the respective Extend rib 3. These characteristics 10 have a considerable effect Increase in turbulence of the flowing medium.
- To achieve additional openings 11 are also provided. These are located in the side surfaces of the ribs 3 in the area of the base of the rib. Their opening cross section is significantly smaller than the opening cross section of the openings 9, in particular smaller than the size of the flow Cross section Q between two adjacent ribs 3.
- Fig. 1 shows that the additional openings 11 are each halfway between two successive openings 9 are located.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Power Steering Mechanism (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
Die Erfindung betrifft einen Wärmetauscher aus mehreren parallel zueinander angeordneten Austauscherrohren, deren Querschnitt für den Durchtritt eines der am Wärmeaustausch beteiligten Medien eine im Verhältnis zur Höhe große Breite aufweist und die zur Bildung einer Vielzahl von rechtwinklig zur Längsrichtung des Austauscherrohres verlaufenden Strömungskanälen für das andere am Wärmeaustausch beteiligte Medium auf beiden Flachseiten mit Rippen aus einem mehrfach umgelenkten, Öffnungen aufweisenden und am Austauscherrohr befestigten Rippenband versehen sind.The invention relates to a heat exchanger made of several parallel to each other arranged exchanger tubes, the cross section for the passage of a of the media involved in the heat exchange is large in relation to the height Has width and which to form a variety of perpendicular to Longitudinal direction of the exchanger tube extending flow channels for the other medium involved in heat exchange on both flat sides Ribs from a multiply deflected, opening and on Exchanger ribbed belt are provided.
Ein Wärmetauscher dieser Art ist aus der EP-A-0 546 334 bekannt. Die hierbei verwendeten Austauscherrohre werden in einer Vorrichtung mit den Rippen versehen, die aus einem Rippenband geformt werden, welches vor der Befestigung auf den Flachseiten des jeweiligen Austauscherrohres durch mehrfache Umlenkungen die erforderliche Rippenform erhält. Anschließend erfolgt die Befestigung des so geformten Rippenbandes auf der jeweiligen Flachseite des Austauscherrohres.A heat exchanger of this type is known from EP-A-0 546 334. The one here Exchanger tubes are used in a device with the fins provided, which are formed from a ribbed band, which in front of the Fastening on the flat sides of the respective exchanger tube multiple deflections receives the required rib shape. Subsequently the ribbed belt thus shaped is attached to the respective one Flat side of the exchanger tube.
Bei einer Ausführungsform des bekannten Wärmetauschers ist vorgesehen, die aus einem endlosen Rippenband hergestellten und jeweils einen über die Länge der Flachseiten durchgehend geformten Kanal bildenden Rippen mit Ausprägungen in Form von seitlichen Versätzen zu versehen. Auf diese Weise soll in dem die Kanäle durchströmenden Medium ein erhöhter Turbulenzgrad erzeugt werden, um den Wärmeübergang zu erhöhen. In one embodiment of the known heat exchanger, those made from an endless ribbed belt and one each over the Length of the flat sides with continuously formed channel-forming ribs Features in the form of lateral offsets. In this way should have an increased degree of turbulence in the medium flowing through the channels generated to increase the heat transfer.
Nachteilig bei Wärmetauschern dieser Art ist die relativ hohe Verschmutzungsneigung in den durch die Rippen gebildeten Kanälen. Durch die Ausprägungen in Gestalt einzelner seitlicher Versätze wird diese Verschmutzungsneigung noch erhöht, da sich an diesen Stellen besonders leicht Schmutzteilchen festsetzen können, was mit fortschreitendem Betrieb des Wärmetauschers bis zum vollständigen Verschluß des betreffenden Kanals führen kann. Hierdurch wird eine unerwünschte lokale Verschlechterung des Wärmeübertragungsverhaltens des Wärmetauschers hervorgerufen.A disadvantage of heat exchangers of this type is the relatively high tendency to become contaminated in the channels formed by the ribs. By the characteristics this tendency to contamination is shown in the form of individual lateral offsets still increased, because dirt particles are particularly easy in these places can fix what with progressive operation of the heat exchanger can lead to complete closure of the channel concerned. Hereby becomes an undesirable local deterioration in heat transfer behavior of the heat exchanger.
Der Erfindung liegt daher die Aufgabe zugrunde, den bekannten Wärmetauscher so weiterzuentwickeln, daß der Einfluß eventueller Verschmutzungen auf die Wärmeübertragungsleistung des Wärmetauschers verringert wird.The invention is therefore based on the object of further developing the known heat exchanger in such a way that the influence of any contamination on the heat transfer performance of the heat exchanger is reduced.
Zur Lösung dieser Aufgabe wird vorgeschlagen, die Öffnungen im Bereich der zur Flachseite der Austauscherrohre parallelen Umlenkungen der Rippen mit jeweils mindestens der Größe des Strömungsquerschnittes des durch zwei benachbarte Rippen des gleichen Austauscherrohres gebildeten Strömungskanals auszubilden.To solve this problem, it is proposed to form the openings in the region of the deflections of the ribs parallel to the flat side of the exchanger tubes, each with at least the size of the flow cross section of the flow channel formed by two adjacent ribs of the same exchanger tube.
Durch diese Maßnahme wird erreicht, daß im Fall lokaler Verschmutzungen und insbesondere der Verstopfung einzelner Strömungskanäle über die im Kopfbereich der Rippen ausgebildeten Öffnungen ein Ausweichen der Strömung in die Strömungskanäle des benachbarten Austauscherrohres möglich ist, so daß die Strömungsbehinderung und damit der Verlust an Wärmeübertragungsleistung nur gering ausfällt. Ist ein Durchströmen eines durch benachbarte Rippen gebildeten Strömungskanals nicht mehr möglich, so kann die Strömung über eine der in den Rippen angeordneten Öffnungen in den benachbarten Strömungskanal ausweichen und dort weiterströmen. Nach dieser Umgehung des Hindernisses kann die Strömung dann über eine weitere Öffnung wieder in den ursprünglichen Querschnitt übertreten. Das so erreichte Zusammenfassen zweier Strömungen in einem einzigen Querschnitt hat hinsichtlich der Wärmeübertragungsleistung keine nennenswerten Nachteile, da im Bereich der Umlenkung die Strömungsgeschwindigkeit zwangsläufig ansteigt, so daß sich die Wärmeübertragungsleistung lokal erhöht. Hierdurch wird der Verlust an Wärmeübertragungsleistung im verstopften Querschnitt teilweise wieder aufgehoben.This measure ensures that in the event of local contamination and in particular the blockage of individual flow channels via the in Head area of the ribs formed openings avoiding the Flow into the flow channels of the neighboring exchanger tube is possible, so that the flow obstruction and thus the loss Heat transfer performance is low. Is a flow through one no longer possible through adjacent ribs flow channel, so the flow through one of the openings in the ribs in dodge the adjacent flow channel and continue to flow there. After bypassing the obstacle, the flow can then pass over another Go back to the original cross-section. That accomplished Combining two flows in a single cross section has regard to the heat transfer performance no significant disadvantages, because the flow velocity inevitably increases in the area of the deflection, so that the heat transfer performance increases locally. Hereby is the loss of heat transfer performance in the clogged cross section partially canceled.
Gemäß einer bevorzugten Ausgestaltung überdecken sich die Öffnungen der Rippen benachbarter Austauscherrohre.According to a preferred embodiment, the openings of the Ribs of adjacent exchanger tubes.
Der Strömungsaustausch zwischen den durch die Rippen unterteilten Querschnitten wird ferner dadurch verbessert, daß die Seitenflächen der Rippen im Bereich des Rippenfußes mit zusätzlichen Öffnungen versehen sind, deren Öffnungsquerschnitte jeweils geringer sind als der Querschnitt der durch zwei benachbarte Rippen gebildeten Strömungskanäle.The flow exchange between the cross sections divided by the ribs is further improved in that the side surfaces of the ribs in Area of the rib base are provided with additional openings, the Opening cross sections are each smaller than the cross section of through two adjacent ribs formed flow channels.
Um trotz der zusätzlichen Öffnungen eine hohe mechanische Stabilität des Rippenbandes zu erreichen, befinden sich die zusätzlichen Öffnungen vorzugsweise jeweils auf halber Länge zwischen zwei aufeinanderfolgenden Öffnungen.In order to maintain a high level of mechanical stability despite the additional openings To reach the ribbed belt, the additional openings are preferably located halfway between two successive openings.
Eine besonders gute Verbindung zwischen dem Rippenband und dem jeweiligen Austauscherrohr wird erreicht, wenn gemäß einer bevorzugten Ausführungsform das Rippenband etwa rechteckförmig gefaltet ist, so daß die Umlenkungen ebene Flächen zur Anlage an den Flachseiten des Austauscherrohres bzw. an den entsprechend gestalteten Flächen des Rippenbandes des benachbarten Austauscherrohres bilden. Hierdurch läßt sich auch die gegenseitige Abstützung zwischen benachbarten Austauscherrohren verbessern.A particularly good connection between the ribbed belt and the respective one Exchanger tube is achieved when according to a preferred embodiment the ribbed band is folded approximately rectangular, so that the Deflection of flat surfaces for contact with the flat sides of the exchanger tube or on the appropriately designed surfaces of the ribbed belt of the neighboring exchanger tube. This also allows the improve mutual support between adjacent exchanger tubes.
Eine weitere Ausgestaltung des Wärmetauschers ist gekennzeichnet durch teils abgesenkt, teils erhaben geformte Ausprägungen in den Seitenflächen der Rippen. Diese Ausprägungen erzeugen bzw. verstärken eine Turbulenz des durchströmenden Mediums, wodurch sich die Wärmeübertragungsleistung zusätzlich erhöhen läßt.Another embodiment of the heat exchanger is characterized by partly lowered, partly raised shapes in the side surfaces of the Ribs. These characteristics create or intensify a turbulence of the flowing medium, which increases the heat transfer performance can be increased.
Gemäß einer weiteren Ausgestaltung ist das Rippenband über eine linienförmige, durchgehende Verschweißung an den Flachseiten des Austauscherrohres befestigt. Auf diese Weise ergibt sich eine besonders gute metallische Verbindung zwischen den Teilen und damit ein hoher Wärmeübergang zwischen dem Austauscherrohr und den Rippen.According to a further embodiment, the ribbed band is over a linear, continuous welding on the flat sides of the Exchanger tube attached. This results in a particularly good one metallic connection between the parts and thus a high heat transfer between the exchanger tube and the fins.
Vorzugsweise wird die Verschweißung des Rippenbandes mit der jeweiligen Flachseite des Austauscherrohres mittels eines Kondensator-Entladungs-Schweißverfahrens hergestellt. Dieses Schweißverfahren ermöglicht es, daß sich beim Zusammenführen von Rippenblech und Austauscherrohr die Breitseiten des Grundkörpers an die Kontur des jeweiligen Rippenfußes spaltfrei anpassen. Die hierzu erforderliche Andrückkraft wird von zwei Elektroden erzeugt, die Bestandteil des Kondensator-Entladungs-Schweißgerätes sind. Während die eine Elektrode in den Rippenfußbereich zwischen zwei jeweils benachbart angeordneten Rippen einfährt, liegt die andere Elektrode an der jeweiligen Innenseite des Grundkörpers an und bildet hier ein Widerlager. Auf diese Weise ist für eine spaltlose Berührung der zu verbindenden Teile gesorgt, so daß nach erfolgter Entladung der Kondensatoren des Kondensator-Entladungs-Schweißgerätes eine linienförmige Befestigung der Rippen auf dem Grundkörper und damit eine sehr gute Wärmeübertragung zwischen diesen Teilen erreicht wird.The rib band is preferably welded to the respective one Flat side of the exchanger tube by means of a capacitor discharge welding process produced. This welding process enables when merging the ribbed plate and the exchanger tube Broad sides of the base body to the contour of the respective rib base Adjust without gaps. The pressure required for this is two Electrodes generated, which are part of the capacitor discharge welding machine are. While one electrode in the rib foot area between two adjacent ribs, the on the other inside of the base body and forms here an abutment. In this way the is for a gapless touch connecting parts taken care of so that after unloading Capacitor discharge welding machine capacitors a linear Fastening the ribs on the base body and thus a very good heat transfer between these parts is achieved.
Aus der AT-A-380 104 war zwar ein im weitesten Sinn als Wärmetauscher anzusprechender Plattenradiator bekannt, bei dem durch entsprechende Formung zweier miteinander verbundener Radiatorplatten eine Mehrzahl von senkrecht verlaufenden Kanälen für das wärmeabgebende Medium ausgebildet ist. Die Kanäle liegen hierbei in einer Reihe hintereinander. Im Gegensatz zum erfindungsgemäßen Wärmetauscher verlaufen die durch ein Konvektorblech gebildeten Strömungskanäle parallel zu den durch die Radiatorplatte gebildeten Kanälen für das wärmeabgebende Medium. Der aus der AT-A-380 104 bekannte Plattenradiator unterscheidet sich somit nicht nur bezüglich der Verwendung mehrerer parallel zueinander angeordneter Austauscherrohre mit im Verhältnis zur Höhe sehr großer Breite des Durchströmungsquerschnittes vom Gegenstand der Erfindung, sondern auch hinsichtlich der Zuordnung der einerseits vom Wärmeabgebenden und andererseits vom wärmeaufnehmenden Medium durchströmten Kanäle. Aufgrund dieser grundsätzlichen Unterschiede hat der aus der AT-A-380 104 bekannte Plattenradiator keine Beziehung zu der der vorliegenden Erfindung zugrundeliegenden Aufgabenstellung, nämlich den Einfluß eventueller Verschmutzungen auf die Wärmeübertragungsleistung zu verringern.AT-A-380 104 was in the broadest sense a heat exchanger to be addressed plate radiator known in which by appropriate Forming two interconnected radiator plates a plurality of vertically extending channels for the heat-emitting medium is. The channels are in a row one behind the other. In contrast to Heat exchangers according to the invention run through a convector plate formed flow channels parallel to those formed by the radiator plate Channels for the heat-emitting medium. The one from AT-A-380 104 known plate radiator differs not only in terms of Use of several exchanger tubes arranged parallel to each other in relation to the height of the very large width of the flow cross-section of the subject of the invention, but also with regard to the assignment of on the one hand from the heat emitting and on the other hand from the heat absorbing Medium flow channels. Because of these fundamental differences the plate radiator known from AT-A-380 104 has no relation to the problem underlying the present invention, namely the influence of any contamination on the heat transfer performance to reduce.
Aus der NL-A-89 00 293 war schließlich ein gattungsgemäßer Wärmetauscher bekannt, der jedoch keine Öffnungen besitzt, deren Querschnitt mindestens der Größe des Strömungsquerschnittes des durch zwei benachbarte Rippen des gleichen Austauscherrohres gebildeten Strömungskanals entspricht. Bei dem bekannten Wärmetauscher sind schmale Schlitze abwechselnd über den gesamten Bereich der gefalteten Rippen ausgebildet, das heißt sowohl im Kopfbereich als auch in den Seitenbereichen und im Fußbereich.NL-A-89 00 293 was finally a generic heat exchanger known, but which has no openings, the cross section at least the size of the flow cross-section through two adjacent ribs of the same exchanger tube formed flow channel corresponds. At the known heat exchanger are narrow slots alternately over the entire area of the folded ribs formed, that is, both in Head area as well as in the side areas and in the foot area.
Auf der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt, es zeigen:
- Fig. 1
- in einer Schnittdarstellung einen Wärmetauscher mit zwei parallel zueinander angeordneten Austauscherrohren, die beidseitig mit Rippen versehen sind,
- Fig. 2
- einen Schnitt entlang der Linie ll-ll der Fig. 1,
- Fig. 3
- in einer perspektivischen Ansicht den Ablauf des Verfahrens zur
Herstellung des in den
Figuren 1 und 2 dargestellten Wärmetauschers unter Verwendung eines Kondensator-Entladungs-Schweißverfahrens, - Fig. 4
- in einer Schnittdarstellung die zu verbindenden Teile gemäß Fig. 3 unmittelbar vor dem Zusammensetzen und Verschweißen und
- Fig. 5
- in einer Schnittdarstellung die zu verbindenden Teile gemäß Fig. 3 unmittelbar vor dem Zusammensetzen bzw. Verschweißen bei einer gegenüber Fig. 4 geänderten Vorgehensweise.
- Fig. 1
- a sectional view of a heat exchanger with two mutually parallel exchanger tubes, which are provided on both sides with fins,
- Fig. 2
- 2 shows a section along the line II-II of FIG. 1,
- Fig. 3
- 1 shows a perspective view of the sequence of the method for producing the heat exchanger shown in FIGS. 1 and 2 using a capacitor discharge welding method,
- Fig. 4
- in a sectional view the parts to be connected according to FIG. 3 immediately before assembly and welding and
- Fig. 5
- in a sectional view the parts to be connected according to FIG. 3 immediately before assembling or welding in a modified procedure compared to FIG. 4.
Der in Fig. 1 dargestellte Wärmetauscher besteht aus Austauscherrohren 1,
die nach Art eines Paketes parallel zueinander angeordnet sind. In Fig. 1 sind
aus Gründen der Übersichtlichkeit lediglich zwei solcher Austauscherrohre 1
dargestellt.The heat exchanger shown in Fig. 1 consists of
Fig. 1 läßt erkennen, daß der Querschnitt der Austauscherrohre 1 für den
Durchtritt eines der am Wärmeaustausch beteiligten Medien eine im Verhältnis
zur Höhe H große Breite B aufweist. Die Längskanten des so gebildeten Austauscherrohres
1 sind gerundet, so daß sich insgesamt der Querschnitt eines
langgestreckten Ovals ergibt.Fig. 1 shows that the cross section of the
Das jeweils andere Medium wird im Kreuzstrom über die äußeren Flachseiten
2 der Austauscherrohre 1 geführt. Um den Wärmeaustausch zu verbessern,
sind zur Vergrößerung der wirksamen Wärmeaustauschflächen auf den jeweiligen
Flachseiten 2 der beteiligten Austauscherrohre 1 Rippen 3 angeordnet.
Die Rippen 3 werden aus einem endlosen Blech durch wiederholtes Biegen
hergestellt, so daß, in Längsrichtung des Austauscherrohres 1 betrachtet, die
Rippen 3 sich mäanderförmig aneinanderreihen. Dies ist besonders gut in Fig.
2 zu erkennen.The other medium is cross-flow over the outer
Die Mäandrierungen des so gebildeten Rippenbandes 4 sind, wie ebenfalls Fig.
2 erkennen läßt, rechteckförmig gestaltet, so daß die dem Austauscherrohr 1
zugewandten sowie die dem Austauscherrohr 1 abgewandten Umlenkungen 5
jeweils ebene Flächen 6 bilden. Dabei dienen die Flächen 6 einer besonders
guten Verbindung des Rippenfußbereiches mit der Flachseite 2 des
Austauscherrohres 1. Als Material für das Rippenband 4 eignet sich z.B.
Stahlblech mit einer Dicke von 0,1 bis 0,4 mm, welches beidseitig mit einer
dünnen Aluminiumschicht platiert ist.The meandering of the
Die aus dem mäanderförmig umgelenkten Rippenband 4 bestehenden Rippen 3
befinden sich jeweils auf beiden Seiten der Austauscherrohre 1. Die so gestalteten
Austauscherrohre 1 lassen sich dann zu beliebigen Paketen zusammensetzen,
wobei die Befestigung sowie Beabstandung der einzelnen Austauscherrohre
1 zueinander an deren Enden erfolgt. Hierbei sollen die Umlenkungen
5 am Ende der Rippe 3 einen möglichst geringen Abstand zu den gegenüberliegenden
Umlenkungen 5 des benachbarten Austauscherrohres 1
aufweisen. Der Abstand darf allerdings nicht so gering sein, daß die Gefahr
einer Berührung zwischen den Rippen 3 der einander benachbarten Austauscherrohre
1 besteht.The
Zur Verbindung des Rippenfußbereiches mit der Flachseite 2 des Austauscherrohres
wird ein Kondensator-Entladungs-Schweißverfahren verwendet, welches
nachfolgend anhand der Figuren 3,4 und 5 erläutert wird.For connecting the fin base area to the
Bei dem Kondensator-Entladungs-Schweißen handelt es sich um eine spezielle Art des Widerstandsschweißens, bei dem die erforderliche Energie während des Schweißens nicht direkt dem Netz über einen Transformator entnommen wird, sondern einer Kondensatorbatterie, die als Energiespeicher außerhalb der Schweißzeit geladen wird. Der Vorteil des Kondensator-Entladungs-Schweißens besteht in der Eignung zur Verwendung auch unterschiedlicher Werkstoffe, z.B. Stahl/Aluminium. Außerdem lassen sich mit diesem Verfahren auch oberflächenbehandelte Materialien schweißen, wie z.B. verzinkte oder aluminisierte Bleche, ohne daß es zu einer Beschädigung der Oberfläche kommt.Capacitor discharge welding is a special one Type of resistance welding where the energy required during welding is not taken directly from the mains via a transformer is, but a capacitor bank that acts as an energy storage outside of Welding time is loaded. The advantage of capacitor discharge welding consists in the suitability to use different materials, e.g. Steel / aluminum. You can also use this procedure also weld surface-treated materials, e.g. galvanized or aluminized sheets without causing surface damage is coming.
Das Kondensator-Entladungs-Schweißverfahren verwendet zwei voneinander
unabhängige Elektroden 7,8. Beim Ausführungsbeispiel ist die obere Elektrode
7 fünffach vorhanden und besteht aus scheibenförmig gestalteten Einzelelektroden
aus einem geeigneten Elektrodenwerkstoff, z.B. CuCrZr. Die untere
Elektrode 8 ist als Platte ausgebildet, welche sich über die gesamte Breite des
Austauscherrohres 1 erstreckt und hierbei exakt dessen Innenprofil aufweist.
Auf diese Weise dient die untere Elektrode 8 zugleich der Führung des Grundkörpers
des Austauscherrohres 1 während des Schweißvorganges. Insbesondere
aber bildet die untere Elektrode 8 ein Widerlager für die von den oberen
Elektroden 7 erzeugten Andrückkräfte. Hierzu ist die untere Elektrode 8 in geeigneter
Weise unter Zwischenlage einer Isolierung an dem verwendeten
Schweißgerät abgestützt. Die Ausrichtung der oberen Elektroden 7 ist derart,
daß diese mit ihren schmalen Stirnflächen exakt zwischen zwei benachbarte
Rippen 3 einfahren können, bis sie an dem dazwischen angeordneten Rippenfußbereich
an der Innenseite der Fläche 6 zur Anlage gelangen. Federelemente
7a bewirken hierbei eine definierte Andrückkraft, die von der als Widerlager
dienenden unteren Elektrode 8 aufgenommen wird. Sobald das vorgegebene
Druckniveau erreicht ist, werden die Kondensatoren des Schweißgerätes entladen,
wodurch kurzzeitig eine hohe Energie von den oberen Elektroden 7 zu
der unteren Elektrode 8 fließt. Infolge der Konzentrierung der Schweißenergie
auf die Schweißzone sowie der sehr kurzen Schweißzeit von 1 bis 10 Millisekunden,
tritt keine nennenswerte Erwärmung der Bauteile auf. Die fertigen
Wärmetauscherteile kommen nach der Verschweißung praktisch kalt aus der
Maschine, bleiben daher formbeständig und zeigen keine Neigung zu Verzug
oder Formänderung.The capacitor discharge welding process uses two of them
independent electrodes 7.8. In the exemplary embodiment, the upper electrode
7 available five times and consists of disc-shaped individual electrodes
from a suitable electrode material, e.g. CuCrZr. The lower one
Durch die Verwendung mehrerer unabhängiger oberer Elektroden 7 wird erreicht,
daß geringfügige Durchbiegungen ausgeglichen werden und eine linienförmige,
durchgehende Verschweißung der Rippen 3 mit der jeweiligen Flachseite
2 des Austauscherrohres 1 eintritt.By using several independent upper electrodes 7,
that slight deflections are compensated for and a linear,
continuous welding of the
Die Figuren 4 und 5 zeigen Austauscherrohr 1 und Rippen 3 unmittelbar vor
deren Zusammenfügen, wobei die zueinander in Kontakt kommenden Oberflächen
mit einer im Rapport gestalteten Oberflächenstruktur versehen sind. Bei
dem Ausführungsbeispiel gemäß Fig. 4 ist die außenliegende Flachseite 2 des
Austauscherrohres 1 mit einer feinen, gleichmäßigen Riffelung 8 mit Rillentiefen
von ca. 0,1 bis 0,3 mm versehen. Demgegenüber befindet sich bei dem
Ausführungsbeispiel gemäß Fig. 5 die im Rapport gestaltete Oberflächenstruktur
an der Unterseite der Rippenfußbereiche, d.h. im Bereich der Umlenkung 5.
Diese sind hierzu mit Einprägungen in Gestalt nach unten vorstehender Buckel
oder Erhebungen 8a versehen.Figures 4 and 5
Die Wirkung ist in den in den Figuren 4 und 5 gezeigten Fällen jeweils dieselbe:
Nachdem die zu verbindenden Teile aufeinanderliegen, findet zunächst
ein unmittelbarer metallischer Kontakt zwischen den beteiligten Oberflächen
nur im Bereich der betreffenden Erhebungen 8a statt. Hierdurch entstehen
hinsichtlich ihrer Lage und Ausdehnung genau definierte metallische Brücken,
über die sich die von den Elektroden 7,8 freigesetzte Schweißenergie zunächst
abbaut. Durch den schlagartig einsetzenden Schmelzprozeß werden
diese Erhebungen abgebaut, so daß nach vollständiger Entladung eine besonders
gleichmäßige Schweißverbindung entsteht. Diese Schweißverbindung ist
insbesondere besser als sie im Fall der Verschweißung zufällig aufgerauhter
Oberflächen wäre.The effect is the same in the cases shown in FIGS. 4 and 5:
After the parts to be connected lie on top of each other, first find
direct metallic contact between the surfaces involved
only in the area of the
In Fig. 3 ist das Rippenband 4 als durchgehendes, mäanderförmig gefaltetes
Blech ohne weitere Strukturen dargestellt. Es handelt sich hier allerdings um
eine zur Erläuterung der Erfindung gewählte, vereinfachte Darstellung. Im
Rahmen der Erfindung bilden die Rippen keine über ihre gesamte Länge geschlossenen
Kanäle, sondern sie sind in gleichmäßigen Abständen mit Öffnungen
9 versehen, wie dies die exakten Darstellungen Fig. 1, Fig. 2, Fig. 4 und
Fig. 5 zeigen. Diese Öffnungen 9 sind im Bereich der der Flachseite 2 des
Austauscherrohres 1 abgewandten Umlenkungen 5 angeordnet, d.h. im Bereich
des Endes der Rippen. Über diese Öffnungen 9 kann ein Stoffaustausch
mit dem die Rippen 3 des jeweils benachbarten Austauscherrohres 1 durchströmenden
Medium stattfinden.In Fig. 3 the
Die Wirkungsweise wird nachfolgend anhand der Fig. 1 erläutert: Die Strömungspfeile
A verdeutlichen den Strömungseintritt in den Bereich der Rippen.
Nun befindet sich aber in einer der Querschnitte eine Verschmutzung S. Da
ein Durchtritt der Strömung in diesem Bereich nicht möglich ist, würde bei
einem Wärmetauscher der bekannten Art die Durchströmung dieses Querschnittes
vollständig unterbunden sein. Infolge der erfindungsgemäß vorgesehenen
Öffnungen 9 hingegen kann die Strömung den Weg einer Umlenkung U
gehen. Hierbei tritt die Strömung über die vor dem Hindernis angeordnete Öffnung
9 in jenen Querschnitt über, der durch die Rippen 3 des jeweils benachbarten
Austauscherrohres 1 gebildet wird. Hier findet dann eine entsprechende
Erhöhung der Strömungsgeschwindigkeit statt. Nach der Umgehung
des Hindernisses kann ein Teil der Strömung dann wieder über die nachfolgende
Öffnung 9 in den ursprünglichen Querschnitt zurückströmen, so daß die
Strömung den Wärmetauscher letztlich gleichmäßig verläßt.The mode of operation is explained below with reference to FIG. 1: the flow arrows
A illustrate the flow entry into the area of the ribs.
Now, however, there is contamination S in one of the cross-sections
it would not be possible for the flow to pass in this area
a heat exchanger of the known type, the flow through this cross section
be completely prevented. As a result of the proposed
Die beschriebene Wirkung ist dann sichergestellt, wenn der Öffnungsquerschnitt
jeder der Öffnungen 9 mindestens die Größe des durchströmten Querschnittes
Q zwischen zwei benachbarten Rippen 3 aufweist.The described effect is ensured when the opening cross-section
each of the
Die einzelnen Rippen 3 sind mit zusätzlichen geometrischen Strukturen versehen,
die dazu dienen, das hindurchströmende bzw. vorbeiströmende Medium
zu durchmischen oder Turbulenzen zu erzeugen. Hierzu sind in den Seitenflächen
der Rippen 3 u.a. Ausprägungen 10 in Gestalt seitlicher Ausbuchtungen
vorgesehen, die sich abwechselnd zur einen sowie zur anderen Seite der jeweiligen
Rippe 3 erstrecken. Diese Ausprägungen 10 bewirken eine beträchtliche
Turbulenzerhöhung des vorbeiströmenden Mediums. Um einen Austausch
zwischen dem jeweiligen Rippeninnenraum und dem benachbarten Rippenaußenraum
zu erreichen, sind außerdem zusätzliche Öffnungen 11 vorgesehen.
Diese befinden sich in den Seitenflächen der Rippen 3 im Bereich des Rippenfußes.
Ihr Öffnungsquerschnitt ist deutlich kleiner als der Öffnungsquerschnitt
der Öffnungen 9, insbesondere geringer als die Größe des durchströmten
Querschnittes Q zwischen zwei benachbarten Rippen 3. Fig. 1 läßt erkennen,
daß sich die zusätzlichen Öffnungen 11 jeweils auf halber Länge zwischen
zwei aufeinanderfolgenden Öffnungen 9 befinden. The
- 11
- AustauscherrohrExchanger tube
- 22nd
- FlachseiteFlat side
- 33rd
- Ripperib
- 44th
- RippenbandRibbed band
- 55
- UmlenkungRedirection
- 66
- Flächesurface
- 77
- Elektrodeelectrode
- 7a7a
- FederelementSpring element
- 88th
- Elektrodeelectrode
- 8a8a
- Buckel, ErhebungHump, elevation
- 99
- Öffnungopening
- 1010th
- AusprägungExpression
- 1111
- zusätzliche Öffnungadditional opening
- BB
- Breite des AustauscherrohresWidth of the exchanger tube
- HH
- Höhe des AustauscherrohresHeight of the exchanger tube
- AA
- StrömungspfeilFlow arrow
- SS
- Verschmutzungpollution
- UU
- UmlenkungRedirection
- durchströmter Querschnittflowed cross section
Claims (8)
- Heat exchanger composed of a plurality of exchanger tubes (1) arranged parallel to one another, of which the cross-section for the passage of one of the media involved in the heat exchange has a width (B) which is large in relation to the height (H) and which, to form a multiplicity of flow ducts for the other medium involved in the heat exchange, the said flow ducts running at right angles to the longitudinal direction of the exchanger tube (1), are provided on the two flat sides (2) with ribs (3) composed of a multiply deflected rib strip (4) having orifices and fastened to the exchanger tube (1), characterized in that the orifices (9) in the region of those deflections (5) of the ribs (3) which are parallel to the flat side (2) of the exchanger tubes (1) are designed in each case with at least the size of the flow cross-section of the flow duct formed by two adja-cent ribs (3) of the same exchanger tube (1).
- Heat exchanger according to Claim 1, characterized in that the orifices (9) of the ribs (3) of adja-cent exchanger tubes (1) overlap one another.
- Heat exchanger according to Claim 1 or 2, characterized in that the side faces of the ribs (3) are provided in the region of the rib foot with additional orifices (11), of which the orifice cross-sections are in each case smaller than the cross-section of the flow ducts formed by two adjacent ribs (3).
- Heat exchanger according to Claim 3, characterized in that the additional orifices (11) are in each case located half-away along the length between two successive orifices (9).
- Heat exchanger according to at least one of Claims 1 to 4, characterized in that the rib strip (4) is folded approximately rectangularly, so that the deflections (5) form plane faces (6) for bearing on the flat sides (2) of the exchanger tube (1) or on correspondingly shaped faces of the rib strip (4) of the adjacent exchanger tube (1).
- Heat exchanger according to at least one of Claims 1 to 5, characterized by pressed portions (10) of partly recessed and partly raised shape in the side faces of the ribs (3).
- Heat exchanger according to at least one of Claims 1 to 6, characterized in that the rib strip (4) is fastened to the flat sides (2) of the exchanger tube (1) by means of a continuous linear weld.
- Heat exchanger according to Claim 7, characterized in that the rib strip (4) is welded to the respective flat side (2) by means of a capacitor-discharge welding method.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4322405 | 1993-07-06 | ||
| DE4322405A DE4322405C2 (en) | 1993-07-06 | 1993-07-06 | Process for the production of heat exchanger elements |
| DE9310827U DE9310827U1 (en) | 1993-07-06 | 1993-07-20 | HEAT EXCHANGER FROM SEVERAL EXCHANGER TUBES ARRANGED IN PARALLEL |
| DE9310827U | 1993-07-20 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0633444A2 EP0633444A2 (en) | 1995-01-11 |
| EP0633444A3 EP0633444A3 (en) | 1995-04-26 |
| EP0633444B1 true EP0633444B1 (en) | 1998-05-20 |
Family
ID=25927414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94110457A Expired - Lifetime EP0633444B1 (en) | 1993-07-06 | 1994-07-05 | Heat exchanger with several parallel exchange tubes |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US5429185A (en) |
| EP (1) | EP0633444B1 (en) |
| JP (1) | JPH07151481A (en) |
| KR (1) | KR950003781A (en) |
| CN (1) | CN1102475A (en) |
| AT (1) | ATE166450T1 (en) |
| AU (1) | AU6601494A (en) |
| BR (1) | BR9402643A (en) |
| CA (1) | CA2127413A1 (en) |
| DE (2) | DE9310827U1 (en) |
| IL (1) | IL110148A (en) |
| IN (1) | IN190153B (en) |
| RU (1) | RU2085822C1 (en) |
| TW (1) | TW247345B (en) |
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| DE102009032166B3 (en) * | 2009-07-08 | 2010-09-30 | Handtmann Systemtechnik Gmbh & Co. Kg | Connecting heat exchanger components by welding and soldering, comprises initially welding and fixing the components to be soldered together by condenser discharge welding process in two-stage process and then soldering fixed components |
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| US20040173344A1 (en) * | 2001-05-18 | 2004-09-09 | David Averous | Louvered fins for heat exchanger |
| DE10328748B4 (en) * | 2003-06-25 | 2017-12-14 | Mahle International Gmbh | Heat exchangers, in particular intercoolers for commercial vehicles |
| US20070012430A1 (en) * | 2005-07-18 | 2007-01-18 | Duke Brian E | Heat exchangers with corrugated heat exchange elements of improved strength |
| JP2012007778A (en) * | 2010-06-23 | 2012-01-12 | Komatsu Ltd | Heat exchanger |
| WO2014206455A1 (en) * | 2013-06-26 | 2014-12-31 | L&P Swiss Holding Ag | Method of producing a lumbar support and lumbar support |
| CN105484853B (en) * | 2014-09-17 | 2018-07-06 | 泰安鼎鑫冷却器有限公司 | A kind of double wave inner fin structure charge air cooler |
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| DE4957C (en) * | G. HEMPE, Maschinentechniker, in Buckau bei Magdeburg, Wilhelmstrafse 14 | Water knife | ||
| BE542365A (en) * | 1900-01-01 | |||
| AT79663B (en) * | 1916-03-18 | 1919-12-29 | Johann Schandl | Lamellar coolers for internal combustion engines. |
| US2035665A (en) * | 1932-04-11 | 1936-03-31 | Oscar C Palmer | Radiator construction |
| GB745936A (en) * | 1953-01-28 | 1956-03-07 | William Helmore | Improvements in or relating to corrugated sheet material |
| GB1254372A (en) * | 1969-03-04 | 1971-11-24 | Rootes Motors Ltd | Improvements in or relating to methods of making heat exchangers |
| DE2352950A1 (en) * | 1973-10-23 | 1975-04-30 | Volkswagenwerk Ag | Throughflow heat exchanger for oil or water cooling - has flat components with parallel flow channels, formed by bending light metal pressings |
| DE2813747A1 (en) * | 1978-03-30 | 1979-10-04 | Thermal Waerme Kaelte Klima | HEAT EXCHANGER BLADE AND APPLICATIONS OF THE SAME |
| US4256177A (en) * | 1978-11-09 | 1981-03-17 | Modine Manufacturing Company | Heat exchanger |
| AT380104B (en) * | 1982-10-15 | 1986-04-10 | Stelrad Radiatoren & Kessel | DISK RADIATOR |
| DE3315314C2 (en) * | 1983-04-27 | 1986-11-20 | Schäfer Werke GmbH, 5908 Neunkirchen | Welding machine for performing capacitor discharge welding |
| DE3620345A1 (en) * | 1986-06-18 | 1987-12-23 | Weinsberg Karosseriewerke | Heat exchanger element |
| JPS63318487A (en) * | 1987-06-22 | 1988-12-27 | Matsushita Refrig Co | Finned heat exchanger |
| NL8900293A (en) * | 1989-02-07 | 1990-09-03 | Lummus Heat Transfer Systems B | Heat exchanger for air-cooled steam condenser - installed in pitched roof framework above cooling fan |
| DE4039293C3 (en) * | 1990-12-08 | 1995-03-23 | Gea Luftkuehler Happel Gmbh | Heat exchanger |
| DE4042195A1 (en) * | 1990-12-29 | 1992-07-02 | Bosch Gmbh Robert | HEAT TRANSFER AND METHOD FOR PRODUCING A SLAT FOR A HEAT EXCHANGER |
| DE4140729C2 (en) * | 1991-12-11 | 1995-11-16 | Balcke Duerr Ag | Method and device for producing heat exchanger elements |
| DE4219619C1 (en) * | 1992-06-16 | 1994-01-27 | Fraunhofer Ges Forschung | Making sandwich-type layer assemblies used e.g. in ship, aircraft and spacecraft building - using electro-resistance heating as well as laser heating as layers are forced together |
-
1993
- 1993-07-20 DE DE9310827U patent/DE9310827U1/en not_active Expired - Lifetime
-
1994
- 1994-06-28 IL IL110148A patent/IL110148A/en not_active IP Right Cessation
- 1994-06-29 AU AU66014/94A patent/AU6601494A/en not_active Abandoned
- 1994-07-01 IN IN831DE1994 patent/IN190153B/en unknown
- 1994-07-01 JP JP6182699A patent/JPH07151481A/en active Pending
- 1994-07-05 AT AT94110457T patent/ATE166450T1/en not_active IP Right Cessation
- 1994-07-05 RU RU9494023243A patent/RU2085822C1/en active
- 1994-07-05 DE DE59405984T patent/DE59405984D1/en not_active Expired - Fee Related
- 1994-07-05 EP EP94110457A patent/EP0633444B1/en not_active Expired - Lifetime
- 1994-07-05 CN CN94108286A patent/CN1102475A/en active Pending
- 1994-07-05 BR BR9402643A patent/BR9402643A/en not_active Application Discontinuation
- 1994-07-05 KR KR1019940015979A patent/KR950003781A/en not_active Application Discontinuation
- 1994-07-05 CA CA002127413A patent/CA2127413A1/en not_active Abandoned
- 1994-07-06 US US08/271,279 patent/US5429185A/en not_active Expired - Fee Related
- 1994-07-12 TW TW083106325A patent/TW247345B/zh active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009032166B3 (en) * | 2009-07-08 | 2010-09-30 | Handtmann Systemtechnik Gmbh & Co. Kg | Connecting heat exchanger components by welding and soldering, comprises initially welding and fixing the components to be soldered together by condenser discharge welding process in two-stage process and then soldering fixed components |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950003781A (en) | 1995-02-17 |
| RU2085822C1 (en) | 1997-07-27 |
| JPH07151481A (en) | 1995-06-16 |
| CA2127413A1 (en) | 1995-01-07 |
| EP0633444A2 (en) | 1995-01-11 |
| DE59405984D1 (en) | 1998-06-25 |
| DE9310827U1 (en) | 1993-09-23 |
| IL110148A0 (en) | 1994-10-07 |
| CN1102475A (en) | 1995-05-10 |
| BR9402643A (en) | 1995-04-04 |
| AU6601494A (en) | 1995-01-19 |
| ATE166450T1 (en) | 1998-06-15 |
| IL110148A (en) | 1997-06-10 |
| US5429185A (en) | 1995-07-04 |
| IN190153B (en) | 2003-06-21 |
| EP0633444A3 (en) | 1995-04-26 |
| RU94023243A (en) | 1996-05-10 |
| TW247345B (en) | 1995-05-11 |
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