EP0647822A1 - Lamellenwärmetauscher, insbesondere als Ölkühler benutzt - Google Patents

Lamellenwärmetauscher, insbesondere als Ölkühler benutzt Download PDF

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Publication number
EP0647822A1
EP0647822A1 EP94202948A EP94202948A EP0647822A1 EP 0647822 A1 EP0647822 A1 EP 0647822A1 EP 94202948 A EP94202948 A EP 94202948A EP 94202948 A EP94202948 A EP 94202948A EP 0647822 A1 EP0647822 A1 EP 0647822A1
Authority
EP
European Patent Office
Prior art keywords
fluid
plate
heat exchanger
circular rim
plates
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.)
Granted
Application number
EP94202948A
Other languages
English (en)
French (fr)
Other versions
EP0647822B1 (de
Inventor
Hélène Gire
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur SA
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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0647822A1 publication Critical patent/EP0647822A1/de
Application granted granted Critical
Publication of EP0647822B1 publication Critical patent/EP0647822B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2230/00—Sealing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/916—Oil cooler

Definitions

  • the invention relates to a plate heat exchanger, suitable for allowing a heat exchange between two fluids and which can be used in particular for cooling the lubricating oil, that is to say the engine oil and / or oil from the gearbox of a motor vehicle.
  • the plates have the general shape of a disc which usually has a circular inner lip and a circular peripheral lip, said lips extending in a plane perpendicular to the stacking direction. So when the lips counterparts of two adjacent plates, forming part of the same pair, are joined together, for example by brazing, these two plates define an annular blade for the circulation of the first fluid, for example oil.
  • each plate has two diametrically opposite passage openings, namely an inlet opening and an outlet opening, each opening being bordered by a lip capable of '' be joined tightly to a homologous lip of an adjacent plate.
  • Such heat exchangers are used in particular for cooling the lubricating oil from an engine block.
  • a threaded pin serving, on the one hand, for fixing the heat exchanger on the engine block and, on the other hand, for the fixing an oil filter on the heat exchanger.
  • the hollow central tube then serves to return the oil to the engine block, either directly in the tube, or via the threaded axis which is then made hollow.
  • a bypass fitted with a valve which is normally open when the oil is cold and viscous and closed when the oil is hot and fluid.
  • the oil flows directly through the exchanger from the inlet to the bypass, passing through the inlet openings on the plates, to reach the filter directly and return to the engine via the tube or the central axis, the oil then not being cooled.
  • the valve closed position the oil is distributed in each blade through the plate inlet openings and it leaves each blade through the plate outlet openings to reach a passage communicating with the filter, the return to the engine is carried out through the duct or the central axis, the oil then being cooled by heat exchange with the coolant.
  • this method of assembly reduces the useful heat exchange surface of each plate.
  • the seal between the first and the second fluid is ensured, on the one hand, thanks to the central tube and, on the other hand, thanks to the contact of two flat surfaces formed in relief on the two adjacent plates of two pairs different. Furthermore, in the event of failure of the heat exchanger, a leak may occur, leading to mixing of the first fluid with the second fluid.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • each pair of plates comprises a first plate and a second plate provided respectively with a first internal cylindrical collar and a second internal cylindrical collar which surround the central tube. , extend parallel to the stacking direction and overlap each other.
  • the first plate has a generally planar annular face connecting directly with the first collar
  • the second plate has a generally planar annular face connecting with the second collar via a clean overhanging annular part in contact with the planar annular face of the first plate of an adjacent pair of plates, to form a tight junction
  • This junction is created by the contact due to the stacking of two flat surfaces extending perpendicular to the stacking direction.
  • the fluids flowing on either side of this junction are the first fluid and the second fluid, since the surfaces in contact are completely distinct from each other.
  • the first collar extends between the central tube and the second collar.
  • the invention also provides that the first plate and the second plate are respectively provided with a first outer circular rim and a second outer circular rim disposed near the housing and overlapping each other.
  • the first outer circular rim extends between the second outer circular rim and the housing.
  • the second outer circular rim extends between the first outer circular rim and the housing.
  • the first outer circular rim and the second circular rim outside are advantageously both coiled edges.
  • Such an assembly method increases the overlap surface between the two flanges to guarantee a better seal between the first fluid flowing between the two plates of the same pair and the second fluid flowing at the periphery of the plates.
  • FIGS. 1 and 2 represent a plate heat exchanger used, in the example, for cooling the engine oil of a motor vehicle.
  • the exchanger 10 comprises a housing 12 having a casing wall defined by generators parallel to an axis XX.
  • This envelope wall ( Figure 2) comprises a semi-cylindrical wall 14 connecting to two parallel flat walls 16 and 18 which themselves connect, respectively by rounded edges 20 and 22, to a flat wall 24 perpendicular to the walls 16 and 18. From the wall 24 extend two tubes 26 and 28 respectively serving for the inlet and the outlet of the cooling liquid, for example glycol water.
  • the exchanger further comprises a stack of plates 30 arranged in pairs and alternately inside the housing around a central tube 32 defining a stacking direction XX.
  • the plates 30, also called half-plates, are generally similar and each have the general shape of an annular disc suitable for surrounding the central tube 32 and for being housed inside the housing 12.
  • each pair of plates comprises a first plate 30-1 and a second plate 30-2 respectively provided with a first internal cylindrical collar 34-1 and a second internal cylindrical collar 34-2 which surround the central tube 32, extend parallel to the stacking direction XX and partially overlap.
  • the first plate 30-1 has a generally planar annular face 36-1 connecting directly with the first collar 34-1
  • the second plate 30-2 has a generally planar annular face 36-2 connecting with the second collar 34 -2 via an overhanging annular part 38 suitable for coming into contact with the planar annular face 36-1 of the first plate 30-1 of a pair of adjacent plates to form a tight junction.
  • the first collar 34-1 extends between the central tube 32 and the second collar 34-2.
  • the first plate 30-1 and the second plate 30-2 are respectively provided with a first external circular rim 40-1 and a second external circular rim 40-2 arranged near of the housing and overlapping each other.
  • the first outer circular rim 40-1 extends between the second circular rim 40-2 and the housing 12.
  • the second outer circular rim 40-2 extends between the first outer circular rim 40-1 and the housing 12.
  • the two circular edges 40-1 and 40-2 are both rolled edges.
  • each blade has two diametrically opposite passage openings, namely an opening of inlet 44 limited by a peripheral lip 46 and an outlet opening 48 limited by a peripheral lip 50 (FIG. 2).
  • Each of the lips 46 and 50 is capable of being joined in a sealed manner to a homologous opening of an adjacent plate.
  • the plates 30 (plates 30-1 and 30-2 arranged in pairs) are preferably joined together by brazing and the stack of plates is inserted into the housing around the central tube 32 of axis XX.
  • the heat exchanger 10 further comprises an annular bottom 56 which has an opening 58 situated in alignment with the openings 44 and constituting the oil inlet of the exchanger.
  • the bottom 56 is held by a seal-holder cup 60 placed between the casing of the housing and the central tube 48.
  • the heat exchanger comprises a seal holder cup 62 connected to the casing of the housing and to the central tube 32.
  • the cup 62 has a bypass 64 located in the axial alignment of the openings 44 and controlled by a valve 66, as well as a passage opening 68 arranged in alignment with the openings 44.
  • the heat exchanger 10 is intended to be fixed to an engine block 70 and to receive an oil filter 72, the fixing of the exchanger on the engine block and the fixing of the oil filter on the exchanger being carried out by example by means of a hollow threaded pin as described in document FR-A-2 214 873 already cited.
  • the exchanger 10 operates in the following manner. When the oil is cold and viscous, it enters the exchanger 10 through the opening 58 and, under the effect of the high viscosity of the oil, this results in a rise in the pressure which causes the opening of the valve 66. The oil passes directly through the exchanger from the inlet 58 to the bypass 64 through the openings 44 formed in the plates 30. The oil then passes through the filter and returns to the engine block via the central tube 32.
  • valve 66 When the oil is hot and fluid, the valve 66 is closed. The oil is then distributed in each annular blade 42 through the openings 44 and it emerges from each blade through the openings 48 to reach the opening 68. The oil then passes through the filter and returns to the engine block through the tube central 32.
  • inner collars 34-1 and 34-2 provide an oil / oil seal which is not of a critical nature.
  • the assembly between the outer circular flanges 40-1 and 40-2 is obtained by flanges overlapping over a significant distance and therefore ensuring a secure seal between the oil and the coolant.

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)
EP94202948A 1993-10-12 1994-10-07 Lamellenwärmetauscher, insbesondere als Ölkühler benutzt Expired - Lifetime EP0647822B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9312133 1993-10-12
FR9312133A FR2711234B1 (fr) 1993-10-12 1993-10-12 Echangeur de chaleur à lames utile notamment comme refroidisseur d'huile.

Publications (2)

Publication Number Publication Date
EP0647822A1 true EP0647822A1 (de) 1995-04-12
EP0647822B1 EP0647822B1 (de) 1998-07-15

Family

ID=9451751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94202948A Expired - Lifetime EP0647822B1 (de) 1993-10-12 1994-10-07 Lamellenwärmetauscher, insbesondere als Ölkühler benutzt

Country Status (7)

Country Link
US (1) US5588485A (de)
EP (1) EP0647822B1 (de)
KR (1) KR950012023A (de)
BR (1) BR9404068A (de)
DE (1) DE69411656T2 (de)
ES (1) ES2119067T3 (de)
FR (1) FR2711234B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772831A1 (fr) * 1997-12-23 1999-06-25 Valeo Thermique Moteur Sa Dispositif de refroidissement d'huile a echangeur de chaleur huile/eau pour vehicule automobile

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7318451B2 (en) * 2005-04-20 2008-01-15 Dana Canada Corporation Flapper valves with spring tabs
US20060237079A1 (en) * 2005-04-20 2006-10-26 Cheadle Brian E Self-riveting flapper valves
US7222641B2 (en) * 2005-04-20 2007-05-29 Dana Canada Corporation Snap-in flapper valve assembly
US7735520B2 (en) * 2005-04-20 2010-06-15 Dana Canada Corporation Tubular flapper valves
US20060237184A1 (en) * 2005-04-20 2006-10-26 Yuri Peric Tubular flapper valves
US7828014B2 (en) * 2005-04-20 2010-11-09 Dana Canada Corporation Self-riveting flapper valves
US7644732B2 (en) * 2005-04-20 2010-01-12 Dana Canada Corporation Slide-in flapper valves
US7306030B2 (en) * 2005-04-20 2007-12-11 Dana Canada Corporation Snap-in baffle insert for fluid devices
AT8644U1 (de) * 2005-07-15 2006-10-15 Pustelnik Philipp Dipl Ing Ölkühler
DE102005041036A1 (de) * 2005-08-25 2007-03-01 Joma-Polytec Kunststofftechnik Gmbh Wärmetauscher, insbesondere Ölkühler für eine Verbrennungsmaschine
DE102005048294A1 (de) † 2005-10-08 2007-04-12 Modine Manufacturing Co., Racine Gelöteter Wärmetauscher und Herstellungsverfahren
DE102008027424A1 (de) * 2008-06-10 2009-12-17 Hydac S.A. Fluidkühlvorrichtung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0208957A1 (de) * 1985-06-25 1987-01-21 Nippondenso Co., Ltd. Wärmeaustauscher
US4669532A (en) * 1984-04-23 1987-06-02 Kabushiki Kaisha Tsuchiya Seisakusho Heat exchanger with temperature responsive bypass
JPS63268564A (ja) * 1988-03-17 1988-11-07 Tsuchiya Mfg Co Ltd オイルクーラのエレメント

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2521328Y2 (ja) * 1990-08-06 1996-12-25 カルソニック株式会社 自動変速機用オイルクーラ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4669532A (en) * 1984-04-23 1987-06-02 Kabushiki Kaisha Tsuchiya Seisakusho Heat exchanger with temperature responsive bypass
EP0208957A1 (de) * 1985-06-25 1987-01-21 Nippondenso Co., Ltd. Wärmeaustauscher
JPS63268564A (ja) * 1988-03-17 1988-11-07 Tsuchiya Mfg Co Ltd オイルクーラのエレメント

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 67 (M - 798) 15 February 1989 (1989-02-15) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772831A1 (fr) * 1997-12-23 1999-06-25 Valeo Thermique Moteur Sa Dispositif de refroidissement d'huile a echangeur de chaleur huile/eau pour vehicule automobile

Also Published As

Publication number Publication date
DE69411656T2 (de) 1998-11-05
KR950012023A (ko) 1995-05-16
US5588485A (en) 1996-12-31
ES2119067T3 (es) 1998-10-01
FR2711234B1 (fr) 1995-11-24
DE69411656D1 (de) 1998-08-20
FR2711234A1 (fr) 1995-04-21
EP0647822B1 (de) 1998-07-15
BR9404068A (pt) 1995-06-13

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