EP2031337A1 - Tube plate of a heat exchanger and heat exchanger, in particular for motor vehicles - Google Patents
Tube plate of a heat exchanger and heat exchanger, in particular for motor vehicles Download PDFInfo
- Publication number
- EP2031337A1 EP2031337A1 EP07291046A EP07291046A EP2031337A1 EP 2031337 A1 EP2031337 A1 EP 2031337A1 EP 07291046 A EP07291046 A EP 07291046A EP 07291046 A EP07291046 A EP 07291046A EP 2031337 A1 EP2031337 A1 EP 2031337A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- beads
- plate
- heat exchanger
- passages
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
- F28F9/0224—Header boxes formed by sealing end plates into covers
- F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0091—Radiators
- F28D2021/0094—Radiators for recooling the engine coolant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
- F28D2021/0091—Radiators
- F28D2021/0096—Radiators for space heating
Definitions
- the invention relates to a tube plate of a heat exchanger according to the preamble of claim 1 and a heat exchanger, in particular for motor vehicles according to the preamble of claim 10.
- Heat exchangers for motor vehicles are known in various designs, eg. B. as soldered whole aluminum heat exchanger or as a mechanically joined systems in which the individual parts of the heat exchanger are not material, but mechanically interconnected.
- circular tube heat exchangers in which the pipe ends are connected by mechanical expansion with passages of a tube plate are mechanically joined.
- Such a round tube heat exchanger for use as a coolant radiator for motor vehicles for example, by the EP 0 406 774 A1 known.
- the tube sheet of mechanically joined systems is mechanically connected to a collecting box made of plastic, a so-called water tank, with the interposition of a rubber seal.
- the metallic tube sheet which is preferably made of an aluminum alloy, by beading.
- a mechanically joined heat exchanger for motor vehicles with a metallic tube sheet was known, which is reinforced by extending transversely to the tube sheet beads.
- the tubesheet has a flat plate, in which passages, also called collar, and between the passages, the beads are formed.
- the plate of the tubesheet is bordered by a circumferential groove, which serves to receive a sealing bead for sealing a water box.
- corrugations are arranged in the edge region of the tube plate between the passages, which are preferably rectangular in shape and embossed into the tubesheet.
- the beads are formed by three approximately U-shaped side walls and an open to the groove of the tube sheet side, ie the beads go directly into the gutter.
- the arrangement of the beads thus extends over each the entire length of the two longitudinal sides of the tubesheet.
- the bead according to the invention is relatively easy to produce by a corresponding Umform réelleddling and therefore cost.
- the tubesheet and the heat exchanger are thus not burdened with additional costs.
- the wall thickness of the tubesheet can be reduced due to the beads, thereby saving weight - an advantage that is particularly important when used as a heat exchanger in motor vehicles of particular importance.
- elongated beads are embossed in the tubesheet, which extend between the passages, depending on the pattern of the passages either transversely or obliquely to the longitudinal direction of the tube sheet.
- the tube sheet is advantageously used in heat exchangers for motor vehicles, in particular in radiators or coolant radiators, which are both flowed through by the coolant of the coolant circuit of the internal combustion engine and are thus exposed to similar loads.
- Fig. 1 shows a perspective view of a tube sheet 1, as it is mechanically joined heat exchanger, z. B. radiator ordeffenkühlem used in motor vehicles.
- the tube sheet 1 is made of a sheet metal plate, preferably made of an aluminum material and has an inner part in the form of a rectangular plate 2 and an outer, the plate 2 enclosing area in the form of a circumferential groove 3.
- passages 4 are arranged for receiving pipes, not shown, of the heat exchanger.
- the passages 4 are made by punching punching.
- the tubes, not shown, so-called round tubes are connected by mechanical expansion of the pipe ends with the passages.
- elongated beads 5 for stiffening the central region, ie the plate 2 is formed.
- rectangular-shaped beads 6 are each arranged between adjacent passages, which are also embossed in the tube sheet 1.
- the tubesheet 1 has two longitudinal sides 1 a, 1 b and two narrow sides 1 c, 1 d.
- the rectangular beads 6 are arranged on the entire length of the longitudinal sides 1 a, 1 b, in each case between two passages 4. This results in a stiffening of the tube plate 1 and the plate 2 in the edge regions, by an increase in the resistance moment.
- Fig. 2 shows a plan view of the tube sheet 1 according to Fig. 1 , the same reference numbers are used for the same parts.
- the beads 6 are approximately rectangular in plan view, formed approximately square and have three U-shaped side walls arranged 6a, 6b, 6c and an open side 6d. Between the side walls 6a, 6b, 6c, a bead bottom 6e is arranged. The side walls 6a, 6c approach approximately to the adjacent passages 4 zoom. The open side 6d passes over the bead bottom 6e directly into the circumferential groove 3.
- the obliquely extending oblong beads 5 each end in front of the rectangular beads 6.
- Fig. 3 shows a longitudinal section through the tube sheet 1 in the sectional plane III-III in Fig. 2 , In this sectional view, the depth of the expression of the beads 6, the bead bottom 6d and the two side walls 6a, 6c can be seen. The depth of the expression with respect to the plate 2 determines the moment of resistance of the tube bottom in this edge region.
- Fig. 4 shows a cross section through the tube sheet 1 in the sectional plane IV-IV in Fig. 2 , It can be seen that the bead bottom 6d merges directly into the channel 3, ie the bead 6 is open towards the channel 3.
- the bead wall 6b merges into the plate 2, to which an adjacent passage 4 connects.
- the depth of the bead 6 corresponds in the illustrated embodiment, the height of the passage 4.
- the beads 6 - depending on the stresses occurring - be pronounced different degrees to achieve a corresponding moment of resistance.
- the tube sheet 1 which is not shown, but is known from the aforementioned prior art, on the one hand connected to a water tank made of plastic and the other with pipes of a tube bundle.
- a rubber seal is inserted, which is clamped by means of a flared connection with respect to the water tank.
- the tube ends of the tube bundle are preferably expanded mechanically directly against the passages. Alternatively it can be arranged between the pipe ends and the passages, a rubber seal.
- Such a mechanically joined heat exchanger can be advantageously used as a radiator or coolant radiator for motor vehicles.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Die Erfindung betrifft einen Rohrboden eines Wärmeübertragers nach dem Oberbegriff des Patentanspruches 1 sowie einen Wärmeübertrager, insbesondere für Kraftfahrzeuge nach dem Oberbegriff des Patentanspruches 10.The invention relates to a tube plate of a heat exchanger according to the preamble of
Wärmeübertrager für Kraftfahrzeuge sind in verschiedenen Bauarten bekannt, z. B. als gelötete Ganzaluminiumwärmeübertrager oder als mechanisch gefügte Systeme, bei denen die einzelnen Teile des Wärmeübertragers nicht stofflich, sondern mechanisch miteinander verbunden werden. Mechanisch gefügt sind beispielsweise Rundrohrwärmeübertrager, bei welchen die Rohrenden durch mechanisches Aufweiten mit Durchzügen eines Rohrbodens verbunden werden. Ein derartiger Rundrohrwärmeübertrager zur Verwendung als Kühlmittelkühler für Kraftfahrzeuge wurde beispielsweise durch die
Es ist bekannt, den metallischen Rohrboden, welcher vorzugsweise aus einer Aluminiumlegierung hergestellt wird, durch Sicken zu verstärken. Durch die
Es hat sich gezeigt, dass die bekannten Maßnahmen zur Versteifung des Rohrbodens nicht ausreichend sind, insbesondere, wenn im Rahmen von Weiterentwicklungen geringere Wandstärken des Rohrbodens angestrebt werden, um Gewicht zu sparen.It has been found that the known measures for stiffening the tubesheet are not sufficient, in particular, if lower wall thicknesses of the tubesheet are desired in the context of further developments in order to save weight.
Es ist Aufgabe der vorliegenden Erfindung, einen Rohrboden der eingangs genannten Art in Bezug auf seine Steifigkeit und Haltbarkeit in einem mechanisch gefügten Wärmeübertrager zu verbessern.It is an object of the present invention to improve a tube sheet of the type mentioned in terms of its stiffness and durability in a mechanically joined heat exchanger.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.This object is solved by the features of
Erfindungsgemäß sind im Randbereich der Rohrbodenplatte zwischen den Durchzügen Sicken angeordnet, die vorzugsweise rechteckförmig ausgebildet und in den Rohrboden eingeprägt sind. Vorteilhafterweise werden die Sicken durch drei etwa U-förmig angeordnete Seitenwände und eine zur Rinne des Rohrbodens offene Seite gebildet, d. h. die Sicken gehen unmittelbar in die Rinne über. Die Anordnung der Sicken erstreckt sich somit jeweils über die gesamte Länge der beiden Längsseiten des Rohrbodens. Damit wird der Vorteil einer erheblichen Versteifung des Rohrbodens im Randbereich erzielt, und zwar durch eine Erhöhung des Widerstandsmomentes. Damit wird auch die Haltbarkeit der Verbindung zwischen Rohrboden und Sammelkasten sowie die Lebensdauer des Rohrbodens und des gesamten Wärmeübertragers erhöht. Die erfindungsgemäße Sicke ist relativ einfach durch eine entsprechende Umformmaßnahme herstellbar und daher kostengünstig. Der Rohrboden und der Wärmeübertrager werden somit nicht mit zusätzlichen Kosten belastet. Die Wandstärke des Rohrbodens kann infolge der Sicken reduziert werden, wodurch Gewicht eingespart wird - ein Vorteil, der insbesondere bei der Verwendung als Wärmeübertrager in Kraftfahrzeugen von besonderer Bedeutung ist.According to the invention, corrugations are arranged in the edge region of the tube plate between the passages, which are preferably rectangular in shape and embossed into the tubesheet. Advantageously, the beads are formed by three approximately U-shaped side walls and an open to the groove of the tube sheet side, ie the beads go directly into the gutter. The arrangement of the beads thus extends over each the entire length of the two longitudinal sides of the tubesheet. Thus, the advantage of a significant stiffening of the tube sheet is achieved in the edge region, by increasing the drag torque. Thus, the durability of the connection between the tube sheet and collecting tank and the life of the tube plate and the entire heat exchanger is increased. The bead according to the invention is relatively easy to produce by a corresponding Umformmaßnahme and therefore cost. The tubesheet and the heat exchanger are thus not burdened with additional costs. The wall thickness of the tubesheet can be reduced due to the beads, thereby saving weight - an advantage that is particularly important when used as a heat exchanger in motor vehicles of particular importance.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung sind zusätzlich zu den rechteckförmigen, im Randbereich angeordneten Sicken längliche Sicken in den Rohrboden eingeprägt, welche zwischen den Durchzügen verlaufen, und zwar je nach dem Muster der Durchzüge entweder quer oder schräg zur Längsrichtung des Rohrbodens. Durch diese Kombination von länglichen Sicken im mittleren Bereich des Rohrbodens und die am Rand angeordneten rechteckförmigen Sicken ergibt sich eine optimale Versteifung des Rohrbodens und somit eine Kosten- und Gewichtsersparnis.According to a further preferred embodiment of the invention, in addition to the rectangular, arranged in the edge region beads elongated beads are embossed in the tubesheet, which extend between the passages, depending on the pattern of the passages either transversely or obliquely to the longitudinal direction of the tube sheet. By this combination of elongated beads in the central region of the tube sheet and arranged on the edge rectangular beads results in an optimal stiffening of the tube sheet and thus a cost and weight savings.
Der Rohrboden ist vorteilhaft bei Wärmeübertragern für Kraftfahrzeuge, insbesondere bei Heizkörpern oder Kühlmittelkühlern verwendbar, welche beide vom Kühlmittel des Kühlmittelkreislaufes der Brennkraftmaschine durchströmt werden und somit ähnlichen Belastungen ausgesetzt sind.The tube sheet is advantageously used in heat exchangers for motor vehicles, in particular in radiators or coolant radiators, which are both flowed through by the coolant of the coolant circuit of the internal combustion engine and are thus exposed to similar loads.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen
- Fig. 1
- einen Rohrboden für einen Wärmeübertrager in perspektivischer Darstellung,
- Fig. 2
- den Rohrboden gemäß
Fig. 1 in einer Draufsicht, - Fig. 3
- einen Schnitt entlang der Linie III-III in
Fig. 2 und - Fig. 4
- einen Schnitt durch den Rohrboden gemäß einer Linie IV-IV in
Fig. 2 .
- Fig. 1
- a tube plate for a heat exchanger in a perspective view,
- Fig. 2
- according to the tubesheet
Fig. 1 in a plan view, - Fig. 3
- a section along the line III-III in
Fig. 2 and - Fig. 4
- a section through the tubesheet according to a line IV-IV in
Fig. 2 ,
Der Rohrboden 1 wird, was nicht dargestellt ist, jedoch aus dem eingangs genannten Stand der Technik bekannt ist, einerseits mit einem Wasserkasten aus Kunststoff und andererseits mit Rohren eines Rohrbündels verbunden. In die Rinne 3 wird eine Gummidichtung eingelegt, welche mittels einer Bördelverbindung gegenüber dem Wasserkasten verspannt wird. Die Rohrenden des Rohrbündels werden vorzugsweise mechanisch direkt gegen die Durchzüge aufgeweitet. Alternativ kann zwischen den Rohrenden und den Durchzügen auch eine Gummidichtung angeordnet sein. Ein derartiger mechanisch gefügter Wärmeübertrager kann vorteilhaft als Heizkörper oder Kühlmittelkühler für Kraftfahrzeuge eingesetzt werden.The
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07291046A EP2031337A1 (en) | 2007-08-30 | 2007-08-30 | Tube plate of a heat exchanger and heat exchanger, in particular for motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07291046A EP2031337A1 (en) | 2007-08-30 | 2007-08-30 | Tube plate of a heat exchanger and heat exchanger, in particular for motor vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2031337A1 true EP2031337A1 (en) | 2009-03-04 |
Family
ID=38935778
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07291046A Withdrawn EP2031337A1 (en) | 2007-08-30 | 2007-08-30 | Tube plate of a heat exchanger and heat exchanger, in particular for motor vehicles |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP2031337A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2270471A1 (en) * | 1974-05-10 | 1975-12-05 | Chausson Usines Sa | Seal between water reservoir and heat exchanger - has rubber ring deformed between reservoir and heat exchanger flanges |
EP0406774A1 (en) * | 1989-07-07 | 1991-01-09 | GILARDINI S.p.A. | End tank for automotive radiators |
EP0845650A2 (en) * | 1996-11-29 | 1998-06-03 | Denso Corporation | Heat exchanger assembled without brazing in which adhesive is used to seal tube end portions and an end plate |
JP2000213889A (en) * | 1999-01-26 | 2000-08-02 | Toyo Radiator Co Ltd | Tube plate of heat exchanger |
WO2006082084A1 (en) * | 2005-02-03 | 2006-08-10 | Behr Gmbh & Co. Kg | Heat exchanger |
-
2007
- 2007-08-30 EP EP07291046A patent/EP2031337A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2270471A1 (en) * | 1974-05-10 | 1975-12-05 | Chausson Usines Sa | Seal between water reservoir and heat exchanger - has rubber ring deformed between reservoir and heat exchanger flanges |
EP0406774A1 (en) * | 1989-07-07 | 1991-01-09 | GILARDINI S.p.A. | End tank for automotive radiators |
EP0845650A2 (en) * | 1996-11-29 | 1998-06-03 | Denso Corporation | Heat exchanger assembled without brazing in which adhesive is used to seal tube end portions and an end plate |
JP2000213889A (en) * | 1999-01-26 | 2000-08-02 | Toyo Radiator Co Ltd | Tube plate of heat exchanger |
WO2006082084A1 (en) * | 2005-02-03 | 2006-08-10 | Behr Gmbh & Co. Kg | Heat exchanger |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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Effective date: 20090929 |
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Effective date: 20120301 |