EP2144029A1 - Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement - Google Patents

Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement Download PDF

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Publication number
EP2144029A1
EP2144029A1 EP08290685A EP08290685A EP2144029A1 EP 2144029 A1 EP2144029 A1 EP 2144029A1 EP 08290685 A EP08290685 A EP 08290685A EP 08290685 A EP08290685 A EP 08290685A EP 2144029 A1 EP2144029 A1 EP 2144029A1
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EP
European Patent Office
Prior art keywords
refrigerant
heat exchanger
flow
return
cooling
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Withdrawn
Application number
EP08290685A
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German (de)
English (en)
Inventor
Fabrice Kaczmarek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr France Hambach SAS
Original Assignee
Behr France Hambach SARL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Behr France Hambach SARL filed Critical Behr France Hambach SARL
Priority to EP08290685A priority Critical patent/EP2144029A1/fr
Publication of EP2144029A1 publication Critical patent/EP2144029A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/02Tubular elements of cross-section which is non-circular
    • F28F1/022Tubular elements of cross-section which is non-circular with multiple channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/053Heat-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
    • F28D1/0535Heat-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
    • F28D1/05366Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05375Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02Header boxes; End plates
    • F28F9/0202Header boxes having their inner space divided by partitions
    • F28F9/0204Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions

Definitions

  • the invention relates to a heat exchanger, in particular of a motor vehicle for cooling a refrigerant, with refrigerant pipes, which open into lateral refrigerant collecting boxes of the heat exchanger, and with corrugated fins, which are arranged between two immediately adjacent refrigerant tubes, wherein the refrigerant can circulate in a closed circuit.
  • the invention also relates to a method for cooling a refrigerant in a refrigerant circuit.
  • generic heat exchangers generally have a block which is essentially composed of refrigerant tubes and corrugated ribs, wherein the ends of the refrigerant tubes are in refrigerant collecting boxes of the heat exchanger open, so that a refrigerant introduced into a first refrigerant collecting box can flow through the refrigerant tubes into a second refrigerant collecting box of the heat exchanger.
  • Such a heat exchanger is for example from the published patent application DE 101 56 944 A1 in which a refrigerant flows into a first portion of a first refrigerant collecting case, passes through first refrigerant tubes into a first header section of a second refrigerant header, flows from there into a second header section of the second refrigerant header and from there back into the direction of further refrigerant tubes the first refrigerant collecting box flows and in this case passes into a second header section of the first refrigerant collecting box and from there, the heat exchanger leaves heated again.
  • the refrigerant can absorb heat energy from the ambient air particularly well, whereby the ambient air cooled very quickly and the effectiveness of the air conditioner shown there can be significantly improved.
  • the object of the invention is achieved by a heat exchanger in particular of a motor vehicle for cooling a refrigerant with refrigerant pipes, which open into lateral refrigerant collecting boxes of the heat exchanger, and with corrugated fins, which are arranged between two immediately adjacent refrigerant tubes, wherein the refrigerant in a single Closed refrigerant circuit can circulate, and the heat exchanger is characterized in that a refrigerant pipe has both a flow and a return for the refrigerant of the refrigerant circuit.
  • thermal silver carrier describes any device by means of which heat can be transferred from a first medium to another medium, so that the first medium can be cooled in this case.
  • heat exchangers are detected by motor vehicles, such as cross-flow heat exchangers used there, in which a refrigerant to be cooled is passed as liquid through refrigerant pipes, which are in contact with corrugated fins, and in which the corrugated fins can be flowed around by ambient air, so that the heat energy the refrigerant can be discharged in particular via the corrugated fins in the ambient air.
  • the flow direction of the ambient air crosses the flow direction or the flow directions of the refrigerant.
  • refrigerant collection boxes describes means of the heat exchanger that provide cavities into which open ends of the refrigerant tubes may open, so that refrigerant can flow through the refrigerant tubes from a first refrigerant collection box of the heat exchanger into another refrigerant collection box of the heat exchanger and vice versa.
  • corrugated ribs in the present case means, preferably made of a good heat-conducting metal sheet, such as a rib shaft, which are in direct operative connection with the refrigerant tubes, so that contained in a refrigerant heat energy from the refrigerant tubes can go particularly well into the corrugated fins.
  • the corrugated fins can then because of their relatively large surface providing this Heat energy particularly well to the environment, especially when they are flowed through by the ambient air or.
  • R134a which can circulate in the closed refrigerant circuit, is currently preferably used with regard to the refrigerant.
  • such a refrigerant pipe has a single refrigerant flow and return of the aforementioned single closed refrigerant circuit, so that the refrigerant is preferably returned to a second refrigerant side box of the heat exchanger and back again with each of the existing refrigerant pipes from a first side refrigerant box of the heat exchanger can.
  • the refrigerant is passed through the refrigerant pipe in a single refrigerant pipe in two opposite directions.
  • the refrigerant pipe is particularly resistant to bending, so that the heat exchanger can be designed to be particularly torsionally rigid and particularly solid.
  • the inner tube and the outer tube are in this case approximately as a refrigerant tubes connected to different circuits, for example, a first fluid of a first cooling circuit can cool a second fluid of a second cooling circuit in the countercurrent flow through the refrigerant tubes.
  • heat exchangers are not meant in the present case, since they have two separate closed circuits with respect to the inner tube and the outer tube, and therefore, because of the two required closed cooling circuits, they are also particularly complex and large.
  • the refrigerant pipe according to the invention provides a flow and a return for a single refrigerant circuit, in which the refrigerant between two refrigerant collecting boxes can advantageously flow back and forth.
  • the present refrigerant pipes having the flow and return for the single refrigerant passed through the refrigerant pipe can be tightly joined by known joining methods such as a soldering method or a sticking method, particularly to the refrigerant collecting boxes.
  • the refrigerant pipe with its flow and its return and related refrigerant pipe channels in an extrusion process be prepared, so that the provision of the refrigerant tubes can be done inexpensively.
  • the refrigerant tubes can also be composed of several component components. For example, a welded tube is inserted into an extruded flat tube, so that the refrigerant tubes according to the invention can form a flow and a return for a common refrigerant.
  • a preferred embodiment provides that the flow has more than one refrigerant passage, preferably a plurality of refrigerant outer passages of the refrigerant pipe.
  • Forms the flow more than a refrigerant channel, for example, in a wall of the refrigerant pipe, can be derived in the refrigerant heat energy particularly well in the wall of the refrigerant pipe and thus also particularly well in the corrugated fins of the heat exchanger.
  • a plurality of refrigerant outer channels are provided in the wall of the refrigerant pipe for this purpose.
  • the return has a refrigerant passage, preferably a refrigerant inner passage of the refrigerant pipe. This makes it possible that already cooled down refrigerant advantageous to return in the center of the refrigerant pipe again.
  • an advantageous embodiment provides that the refrigerant outer channels of the refrigerant tube and the refrigerant inner channel of the refrigerant tube are arranged in a common refrigerant circuit.
  • the refrigerant tube is particularly compact and torsionally rigid when the flow or the refrigerant outer channels of the refrigerant tube and the return or the refrigerant inner channel of the refrigerant tube have a common housing.
  • the refrigerant pipe has a particularly simple and effective structure.
  • the structure of the heat exchanger can be further simplified if only one of the refrigerant collecting boxes has a refrigerant inlet and a refrigerant outlet, by means of which the heat exchanger can be connected to further Kafteschnikankonnekomponenten.
  • Such additional refrigerant circuit components may be, for example, external refrigerant line strands to an internal combustion engine or from an internal combustion engine.
  • a first of the refrigerant collecting boxes forms a terminal collecting box, by means of which the heat exchanger can be connected to the further refrigerant circuit components.
  • the terminal collecting box has the refrigerant inlet and the refrigerant outlet.
  • the weight of the heat exchanger can be further reduced.
  • a second of the refrigerant collecting boxes forms a Umlenksammelkasten by means of which the refrigerant is deflected within the Umlenksammelkastens of the flow of the refrigerant pipe in the return of the refrigerant pipe.
  • a problem-free separation of the flow and the return of the refrigerant pipe in the area of the refrigerant collection boxes of the heat exchanger can be structurally easily achieved when a refrigerant collection box having an inner header and an outer header.
  • the refrigerant outer channels of the refrigerant pipe open into the outer header boxes of the refrigerant collecting boxes and the refrigerant inner channel into the inner header boxes of the refrigerant collecting boxes of the heat exchanger.
  • the return can extend into the inner manifolds of the refrigerant collection boxes, it is advantageous if the return is designed to be longer than the flow.
  • the return flow of the refrigerant pipe is arranged at a distance from a cooling medium for cooling the refrigerant. This ensures that the flow and thus also the still warm refrigerant can advantageously come into contact with the cooling medium.
  • the object of the invention is also achieved by a method for cooling a refrigerant in a refrigerant circuit, in which the refrigerant from a first circulation line strand enters an inlet collecting chamber of a connection box of a heat exchanger, the refrigerant flows from there into a flow of a refrigerant pipe of the heat exchanger, the During the passage of the flow line of the refrigerant pipe, the refrigerant preferably releases heat energy to the environment via corrugations of the heat exchanger, the refrigerant passes into a first header chamber of a heat exchanger, and the refrigerant flows from the first header chamber to a second header chamber of the header box and from there through a connection port flows in a return line of the refrigerant pipe, the refrigerant is passed through the return passage into a drain collecting chamber of the terminal collecting box, and then walked the refrigerant from the terminal box is introduced into a further circulation line of the refrigerant circuit.
  • a refrigerant can be directed and cooled in a confined space particularly effective in a heat exchanger of the motor vehicle.
  • the first collecting chamber of the Umlenksammelkastens be formed for example by an outer Umlenksammelkasten the Umlenkksammelkastens and the second collection chamber of an inner Umlenksammelkasten the Umlenkksammelkastens.
  • the Indian FIG. 1 shown heat exchanger 1 is used for cooling a refrigerant 2.
  • the refrigerant 2 can flow through a plurality of refrigerant tubes 3 therethrough.
  • the heat exchanger 1 in addition corrugated fins 4 (here only exemplified) on.
  • the refrigerant tubes 3 and the corrugated fins 4 extend approximately horizontally between a first refrigerant collecting box 5 and a second refrigerant collecting box 6 of the heat exchanger 1.
  • the first refrigerant collecting box 5 of the heat exchanger 1 is in this embodiment a terminal collecting box 7, by means of which the heat exchanger 1 at another Not shown here refrigerant circuit components of a likewise not shown here in detail single refrigerant circuit can be connected.
  • connection collecting box 7 has an inlet 8 and a drain 9.
  • the inlet 8 is connected to an inlet collecting chamber 10 of the connection collecting box 7 and the outlet 9 is accordingly connected to a drain collecting chamber 11 of the connecting collecting box 7.
  • the inlet collection chamber 10, an outer collection box 12 (see FIG. 2 ) of the first refrigerant header 5 and the drain collection chamber 11 has an inner header 13 (see FIG FIG. 2 ) of the first refrigerant collecting box 5.
  • the inlet collection chamber 10 and the drainage collection chamber 11 is spatially separated from each other, so that between them, the refrigerant 2 can not flow directly.
  • the second refrigerant collecting box 6 does not constitute a terminal collecting box 7 but a deflecting collecting box 14 by means of which the refrigerant 2 inside the heat exchanger 1 can be deflected.
  • the Umlenksammelkasten 14 an inner Umlenksammelkasten 15 and an outer Umlenksammelkasten 16 which are connected in this embodiment in a lower portion 17 of the heat exchanger 1 by means of a connection opening 18 spatially directly with each other.
  • a connection opening 18 spatially directly with each other.
  • an exchange of the refrigerant 2 between the inner Umlenksammelkasten 15 and the outer Umlenksammelkasten 16 take place directly.
  • the refrigerant tubes 3 of the heat exchanger 1 both a flow 19 and a return 20.
  • the refrigerant 2 flows via the inlet 8 into the inlet collecting chamber 10 of the first refrigerant collecting box 5. From the inlet collecting chamber 10, the refrigerant 2 flows further into the respective headers 19 of the refrigerant tubes 3 of the heat exchanger 1. Here, the refrigerant 2 flows through each of the existing refrigerant tubes 3 according to a flow direction 21, so that from the refrigerant 2 via the refrigerant tubes 3 and the connected refrigerant fins 4 can deliver heat energy to the environment 22.
  • the refrigerant 2 reaches the second refrigerant collecting box 6 of the heat exchanger 1, where it enters the outer Umlenksammelkasten 16 Umlenksammelkastens 14 and flows through the connection opening 18 in the inner Umlenksammelwaits 14, rises there and flows into the returns 20 of the refrigerant tubes 3.
  • the refrigerant tubes 3 can be connected to the refrigerant collecting boxes 5 and 6 using the known joining methods.
  • FIG. 3 shows how a refrigerant pipe 3 on the one hand in the outer Umlenksammelkasten 16 and on the other hand into the inner Umlenksammelkasten 15 opens.
  • ends of the shorter flow 19 of the refrigerant pipe 3 in the outer Umlenksammelkasten 16 so that the refrigerant 2 can flow in unhindered there.
  • Has the refrigerant 2 in the FIG. 1 Passes through the opening 18, it passes into the inner Umlenksammelkasten 15 of the second refrigerant tank 6 and the Umlenksammelkastens 14. From there, the refrigerant 2 flows in the return line 20 of the refrigerant pipe.
  • refrigerant tube 3 has a housing 26 which forms both the flow 19 of the refrigerant tube 3 and the return 20 of the refrigerant tube.
  • the flow 19 in this case comprises a plurality of refrigerant outer channels 27 (numbered here only by way of example), whereas, on the other hand, the return 20 only has a single refrigerant inner channel 28.
  • the refrigerant outer channels 27 of the flow 19 in the wall 29 of the return 20 and the refrigerant inner channel 28 are arranged.
  • the refrigerant pipe 3 is particularly compact and extremely rigid, especially since additional dividers 30 are provided between the individual refrigerant outer channels.
  • the refrigerant 2 flows in the refrigerant outer passages 27 in the forward flow direction 21. As shown in FIG. 4 directed into the paper plane. In the refrigerant internal passage 28, the refrigerant 2 flows in the reverse return flow direction 23, as shown in FIG. 4 thus directed out of the paper plane.
  • the inlet 8 of the heat exchanger 1 is shown again in detail, it being well recognized that the inlet 8 extends into the inlet collecting chamber 10, in which also the open ends 31 of the refrigerant outer channels 27 open, the terminal collecting box 7. Accordingly, in each case an open end 32 of the refrigerant inner channel 28 opens into the drainage collection chamber 11 of the terminal collecting box 7.
  • Both the inlet collecting chamber 10 and the drainage collecting chamber 11 of the terminal collecting box 7 are axially closed in the region above the inlet 8 by means of an upper closure 33. Accordingly, the inlet collecting chamber 10 and the drainage collection chamber 11 are axially closed below the outlet 9 by means of a lower closure 34.
  • the refrigerant 2 After the presentation of the FIG. 6 flows the refrigerant 2, after it has flowed through the refrigerant tubes 3 of the heat exchanger 1, from the outlet 9, which is connected to the drainage collection chamber 11, again from the heat exchanger 1 from.
  • the outlet 9 is equipped with further fastening means 35, by means of which the heat exchanger 1 can be permanently secured to a suitable holding device, for example a motor vehicle, in a reliable manner.
  • a suitable holding device for example a motor vehicle

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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)
EP08290685A 2008-07-11 2008-07-11 Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement Withdrawn EP2144029A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08290685A EP2144029A1 (fr) 2008-07-11 2008-07-11 Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08290685A EP2144029A1 (fr) 2008-07-11 2008-07-11 Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement

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EP2144029A1 true EP2144029A1 (fr) 2010-01-13

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EP08290685A Withdrawn EP2144029A1 (fr) 2008-07-11 2008-07-11 Echangeur thermique, en particulier d'un véhicule automobile, destiné au refroidissement d'un liquide de refroidissement et procédé de refroidissement d'un liquide de refroidissement

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20150332A1 (it) * 2015-05-06 2016-11-06 Cordivari S R L Radiatore e procedimento per la realizzazione di detto radiatore.
FR3126769A1 (fr) * 2021-09-03 2023-03-10 Valeo Systemes Thermiques Échangeur de chaleur pour boucle de fluide refrigerant

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202085A (ja) * 1985-03-01 1986-09-06 Showa Alum Corp 熱交換器
JPH01118093A (ja) * 1987-10-30 1989-05-10 Showa Alum Corp ラジエータ
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
DE10156944A1 (de) 2001-01-05 2002-07-11 Behr Gmbh & Co Klimaanlage für ein Kraftfahrzeug
DE10246849A1 (de) * 2001-10-09 2003-04-17 Denso Corp Rohr und Wärmetauscher mit einem solchen
EP1447636A1 (fr) * 2003-02-11 2004-08-18 Delphi Technologies, Inc. Echangeur de chaleur
EP1788333A1 (fr) * 2005-11-21 2007-05-23 Ford Global Technologies, LLC Refroidisseur d'air

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202085A (ja) * 1985-03-01 1986-09-06 Showa Alum Corp 熱交換器
JPH01118093A (ja) * 1987-10-30 1989-05-10 Showa Alum Corp ラジエータ
US5174373A (en) * 1990-07-13 1992-12-29 Sanden Corporation Heat exchanger
DE10156944A1 (de) 2001-01-05 2002-07-11 Behr Gmbh & Co Klimaanlage für ein Kraftfahrzeug
DE10246849A1 (de) * 2001-10-09 2003-04-17 Denso Corp Rohr und Wärmetauscher mit einem solchen
EP1447636A1 (fr) * 2003-02-11 2004-08-18 Delphi Technologies, Inc. Echangeur de chaleur
EP1788333A1 (fr) * 2005-11-21 2007-05-23 Ford Global Technologies, LLC Refroidisseur d'air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20150332A1 (it) * 2015-05-06 2016-11-06 Cordivari S R L Radiatore e procedimento per la realizzazione di detto radiatore.
EP3091325A1 (fr) * 2015-05-06 2016-11-09 Cordivari S.r.l. Radiateur et procédé de fabrication de ce radiateur
FR3126769A1 (fr) * 2021-09-03 2023-03-10 Valeo Systemes Thermiques Échangeur de chaleur pour boucle de fluide refrigerant

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