EP1764571B1 - Heat exchanger, especially radiator, for air conditioning system - Google Patents
Heat exchanger, especially radiator, for air conditioning system Download PDFInfo
- Publication number
- EP1764571B1 EP1764571B1 EP06015635.3A EP06015635A EP1764571B1 EP 1764571 B1 EP1764571 B1 EP 1764571B1 EP 06015635 A EP06015635 A EP 06015635A EP 1764571 B1 EP1764571 B1 EP 1764571B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flat
- flat tubes
- heat exchanger
- impressions
- radiator
- 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.)
- Not-in-force
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
- F28F3/044—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being pontual, e.g. dimples
-
- 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
- F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
Definitions
- the invention relates to a radiator for an air conditioner with flat tubes, which are flowed through in a direction of coolant and between which Heilieit stylesen are arranged, which are flowed around by air or other medium.
- a heat exchanger for motor vehicles which comprises a plurality of flat tubes, which are traversed by a liquid cooling medium. Between the flat tubes are arranged by ambient air or other media acted upon corrugated fins, wherein the flat tubes have on at least one of its flat sides inwardly directed indentations.
- Conventional heat exchangers, in particular radiators, for air conditioning systems are usually equipped with deflections, so that they are flowed through several times.
- some investment concepts which, for example, have a coolant inlet arranged at the bottom and a coolant outlet arranged at the top, simply through-flow heat exchangers are to be preferred, since due to the simple flow through a natural stratification occurs.
- the present invention provides a compromise between the requirement for high heat output and the goal of keeping the coolant side pressure drop as small as possible.
- the relatively large inner diameter of the pipe leads to a relatively small pressure drop on the coolant side, but also to lower heat output.
- this disadvantage can be overcome by the partial imprints, which are also referred to as winglets.
- the indentations improve the heat transfer on the coolant side, whereby the coolant-side pressure drop does not rise or only moderately increases with a suitable geometry of the impressions.
- a radiator according to the invention is characterized in that the indentations have a depth of 0.1 to 0.4 mm. These values have proven to be particularly advantageous in the context of the present invention.
- An inventive radiator is characterized in that the flat tubes have a clear inner tube width of 1.3 to 1.5 mm. Preferably, the flat tubes have a clear tube width of 1.38 mm. In this case, customary manufacturing tolerances must be taken into account.
- An inventive radiator is characterized in that the indentations are formed by elongated depressions, which are provided on each flat side of the flat tubes.
- An alternative radiator according to the invention is also characterized in that the indentations are formed by elongated recesses which are respectively provided on both flat sides of the flat tubes.
- a radiator according to the invention is also characterized in that impressions are also formed in the shape of a knob.
- impressions are also formed in the shape of a knob.
- FIG. 1 a heat exchanger 1 is shown in plan view.
- the heat exchanger 1 is a radiator of an air conditioning system of a motor vehicle.
- the heat exchanger 1 comprises a lower collection box 4, which is equipped with an inlet connection 5, through which, as indicated by an arrow 6, coolant enters the heat exchanger 1.
- the heat exchanger 1 has an upper collecting box 7, which is equipped with an outlet nozzle 8, through which, as indicated by an arrow 10, the coolant exits the heat exchanger 1.
- the two header boxes 4, 7 are connected by a plurality of flat tubes, which are simply flowed through in the direction of an arrow 14 by the coolant. Between each two flat tubes, a gap is provided in which an air guide, in particular a corrugated fin is arranged.
- the louvers between the flat tubes are perpendicular to the plane of the FIG. 1 flows through a medium, in particular of ambient air.
- FIG. 2 is a portion of a flat tube 20 of the in FIG. 1 shown heat exchanger shown in perspective.
- the flat tube 20 has in the Center on a longitudinal bead 22, which serves to give the flat tube 20 a greater rigidity. Because of the bead 22, the flat tube 20 is also referred to as a bead tube.
- the flat tube 20 comprises an upper flat side 24 and a lower flat side 25.
- the two flat sides 24, 25 are provided with a plurality of elongated depressions 26 to 29.
- flat tubes with the outside dimensions 26.0 ⁇ 1.9 ⁇ 0.26 mm 3 are mainly used. These flat tubes have a clear inner tube width of 1.38 mm. The height of the impressions is in the range of 0.1 to 0.4 mm. Due to the height of the indentations, the heat transfer on the coolant side can be varied until a desired performance result is achieved.
- FIG. 3 nine different rectangular sections are shown, each representing an embodiment of a flat tube in plan view. Solid lines show various impressions in the visible flat side of the respective flat tube. With dashed lines indentations in the underlying flat side of the respective flat tube are indicated.
- the flat tube 31 includes a plurality of indentations 41, 42, which are each arranged in pairs V-shaped to each other. In the invisible flat side of the flat tube 31 also impressions 44, 45 are formed, which complement with the indentations 41, 42 to a rhombus.
- the flat tubes 32 and 33 show further V-shaped or diamond-shaped arrangements of oblong indentations.
- the flat tubes 34 and 36 show X-shaped arrangements of impressions with the two flat sides of the respective flat tube.
- the flat tube 35 in turn has V-shaped impressions.
- the flat tube 37 is formed identically to the flat tube 31.
- the flat tubes 38 and 39 according to the invention, in addition to elongated impressions or depressions, as shown in FIGS. 31 and 37, also have knob-like embossments 51 to 54.
- the flat tubes 31 to 39 are each flowed through from bottom to top.
Description
Die Erfindung betrifft einen Heizkörper für eine Klimaanlage mit Flachrohren, die in einer Richtung von Kühlmittel durchströmt werden und zwischen denen Luftieiteinrichtungen angeordnet sind, die von Luft oder einem anderen Medium umströmt werden.The invention relates to a radiator for an air conditioner with flat tubes, which are flowed through in a direction of coolant and between which Luftieiteinrichtungen are arranged, which are flowed around by air or other medium.
Aus der deutschen Offenlegungsschrift
Die Aufgabe wird mit einem Heizkörper gemäß den Merkmalen von Anspruch 1 gelöst.The object is achieved with a radiator according to the features of
Als lichte innere Rohrweite wird die Höhe des Innenraums eines Flachrohrs bezeichnet. Die vorliegende Erfindung schafft entgegen von üblichen Auslegungsregeln und Vorurteilen einen Kompromiss zwischen der Forderung nach einer hohen Heizleistung und dem Ziel, den kühlmittelseitigen Druckabfall möglich klein zu halten. Die relativ große lichte innere Rohrweite führt zu einem relativ kleinen Druckabfall auf der Kühlmittelseite, aber auch zu geringerer Heizleistung. Dieser Nachteil kann jedoch durch die partiellen Einprägungen, die auch als Winglets bezeichnet werden, behoben werden. Durch die Einprägungen wird der Wärmeübergang auf der Kühlmittelseite verbessert, wobei der kühlmittelseitige Druckabfall bei geeigneter Geometrie der Einprägungen nicht oder nur moderat ansteigt.As a clear inner tube width, the height of the interior of a flat tube is called. Contrary to common design rules and prejudices, the present invention provides a compromise between the requirement for high heat output and the goal of keeping the coolant side pressure drop as small as possible. The relatively large inner diameter of the pipe leads to a relatively small pressure drop on the coolant side, but also to lower heat output. However, this disadvantage can be overcome by the partial imprints, which are also referred to as winglets. The indentations improve the heat transfer on the coolant side, whereby the coolant-side pressure drop does not rise or only moderately increases with a suitable geometry of the impressions.
Ein erfindungsgemäßer Heizkörper ist dadurch gekennzeichnet, dass die Einprägungen eine Tiefe von 0,1 bis 0,4 mm aufweisen. Diese Werte haben sich im Rahmen der vorliegenden Erfindung als besonders vorteilhaft erwiesen.A radiator according to the invention is characterized in that the indentations have a depth of 0.1 to 0.4 mm. These values have proven to be particularly advantageous in the context of the present invention.
Ein erfindungsgemäßer Heizkörper ist dadurch gekennzeichnet, dass die Flachrohre eine lichte innere Rohrweite von 1,3 bis 1,5 mm aufweisen. Vorzugsweise haben die Flachrohre eine lichte Rohrweite von 1,38 mm. Dabei sind übliche, herstellungsbedingte Toleranzen zu berücksichtigen.An inventive radiator is characterized in that the flat tubes have a clear inner tube width of 1.3 to 1.5 mm. Preferably, the flat tubes have a clear tube width of 1.38 mm. In this case, customary manufacturing tolerances must be taken into account.
Ein erfindungsgemäßer Heizkörper ist dadurch gekennzeichnet, dass die Einprägungen von länglichen Vertiefungen gebildet werden, die auf jeweils einer Flachseite der Flachrohre vorgesehen sind.An inventive radiator is characterized in that the indentations are formed by elongated depressions, which are provided on each flat side of the flat tubes.
Ein alternativer erfindungsgemäßer Heizkörper ist auch dadurch gekennzeichnet, dass die Einprägungen von länglichen Vertiefungen gebildet werden, die jeweils auf beiden Flachseiten der Flachrohre vorgesehen sind. Damit wurden im Rahmen der vorliegenden Erfindung die besten Resultate erzielt.An alternative radiator according to the invention is also characterized in that the indentations are formed by elongated recesses which are respectively provided on both flat sides of the flat tubes. Thus, the best results were achieved in the context of the present invention.
Ein erfindungsgemäßer Heizkörper ist auch dadurch gekennzeichnet, dass auch Einprägungen noppenartig ausgebildet sind. Als besonders vorteilhaft hat sich eine Kombination von länglichen mit noppenartigen Einprägungen auf beiden Flachseiten der Flachrohre erwiesen.A radiator according to the invention is also characterized in that impressions are also formed in the shape of a knob. As a particularly advantageous has proven to be a combination of elongated with knob-like impressions on both flat sides of the flat tubes.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung verschiedene Ausführungsbeispiele im Einzelnen beschrieben sind. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein. Es zeigen:
Figur 1- einen erfindungsgemäßen Wärmeübertrager in der Draufsicht;
- Figur 2
- eine perspektivische Darstellung eines Abschnitts eines Flachrohrs mit Einprägungen und
- Figur 3
- neun Ausführungsbeispiele von Flachrohren in der Draufsicht.
- FIG. 1
- a heat exchanger according to the invention in plan view;
- FIG. 2
- a perspective view of a portion of a flat tube with indentations and
- FIG. 3
- nine embodiments of flat tubes in plan view.
In
In
Im Rahmen der vorliegenden Erfindung werden hauptsächlich Flachrohre mit den Außenabmessungen 26,0 x 1,9 x 0,26 mm3 verwendet. Diese Flachrohre weisen eine lichte innere Rohrweite von 1,38 mm auf. Die Höhe der Einprägungen liegt im Bereich von 0,1 bis 0,4 mm. Durch die Höhe der Einprägungen kann der Wärmeübergang auf der Kühlmittelseite variiert werden, bis ein gewünschtes Leistungsresultat erzielt wird.In the context of the present invention, flat tubes with the outside dimensions 26.0 × 1.9 × 0.26 mm 3 are mainly used. These flat tubes have a clear inner tube width of 1.38 mm. The height of the impressions is in the range of 0.1 to 0.4 mm. Due to the height of the indentations, the heat transfer on the coolant side can be varied until a desired performance result is achieved.
In
Das Flachrohr 31 umfasst mehrere Einprägungen 41, 42, die jeweils paarweise V-förmig zueinander angeordnet sind. In der nicht sichtbaren Flachseite des Flachrohrs 31 sind ebenfalls Einprägungen 44, 45 ausgebildet, die sich mit den Einprägungen 41, 42 zu einer Raute ergänzen. Die Flachrohre 32 und 33 zeigen weitere V-förmige beziehungsweise rautenförmige Anordnungen von länglichen Einprägungen. Die Flachrohre 34 und 36 zeigen X-förmige Anordnungen von Einprägungen mit den beiden Flachseiten des jeweiligen Flachrohrs. Das Flachrohr 35 weist wiederum V-förmig angeordnete Einprägungen auf. Das Flachrohr 37 ist identisch zu dem Flachrohr 31 ausgebildet. Die Flachrohre 38 und 39 weisen erfindungsgemäß zusätzlich zu länglichen Einprägungen beziehungsweise Vertiefungen, wie sie in 31 und 37 gezeigt sind, noch noppenartige Einprägungen 51 bis 54 auf. Die Flachrohre 31 bis 39 werden jeweils von unten nach oben durchströmt.The
Claims (1)
- A radiator for an air-conditioning system having flat tubes (20; 31-39) through which coolant flows in one direction and between which air guide arrangements surrounded by air or another medium are arranged, characterised in that the flat tubes (20; 31-39) have a clear inner pipe diameter of 1.3 mm to 1.5 mm and impressions (26-29; 41-45, 51-54) extending into the interior of the flat tubes, wherein the impressions (26-29; 41-45, 51-54) have a depth of 0.1 to 0.4 mm, wherein the impressions are formed by elongate recesses which are provided on either flat side of the flat tubes or each of which is provided on both flat sides of the flat tubes and wherein impressions (51-54) are also formed in a knob-like manner.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510044558 DE102005044558A1 (en) | 2005-09-17 | 2005-09-17 | Heat exchanger, in particular radiator, for air conditioning |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1764571A1 EP1764571A1 (en) | 2007-03-21 |
EP1764571B1 true EP1764571B1 (en) | 2017-04-12 |
Family
ID=37517125
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06015635.3A Not-in-force EP1764571B1 (en) | 2005-09-17 | 2006-07-27 | Heat exchanger, especially radiator, for air conditioning system |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1764571B1 (en) |
DE (1) | DE102005044558A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2630754B1 (en) * | 2016-02-19 | 2018-03-07 | Valeo Térmico, S. A. | CIRCULATION CHANNEL FOR DRIVING A FLUID OF A HEAT EXCHANGER, AND HEAT EXCHANGER |
EP3270085B1 (en) * | 2016-07-12 | 2019-11-06 | Borgwarner Emissions Systems Spain, S.L.U. | Heat exchanger for an egr system |
CN109489466A (en) * | 2018-11-13 | 2019-03-19 | 哈尔滨工程大学 | A kind of heat exchanger with staggeredly concaveconvex structure |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5730213A (en) * | 1995-11-13 | 1998-03-24 | Alliedsignal, Inc. | Cooling tube for heat exchanger |
SE516992C2 (en) * | 1999-10-07 | 2002-04-02 | Jaerlaasa Faergindustrier Ab | Linseed oil and process for its preparation |
DE10127084B4 (en) * | 2000-06-17 | 2019-05-29 | Mahle International Gmbh | Heat exchanger, in particular for motor vehicles |
DE10242311A1 (en) * | 2002-09-12 | 2004-03-18 | Modine Manufacturing Co., Racine | Coolant radiator |
KR100950714B1 (en) * | 2003-05-29 | 2010-03-31 | 한라공조주식회사 | Plate for heat exchanger |
WO2005005904A1 (en) * | 2003-07-15 | 2005-01-20 | Outokumpu Copper Products Oy | Pressure containing heat transfer tube and method of making thereof |
DE102004045018B4 (en) * | 2003-09-30 | 2019-08-01 | Mahle International Gmbh | Method for producing a flat tube for a heat exchanger of a motor vehicle, flat tube, method for producing a heat exchanger and heat exchangers |
-
2005
- 2005-09-17 DE DE200510044558 patent/DE102005044558A1/en not_active Withdrawn
-
2006
- 2006-07-27 EP EP06015635.3A patent/EP1764571B1/en not_active Not-in-force
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
DE102005044558A1 (en) | 2007-03-29 |
EP1764571A1 (en) | 2007-03-21 |
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