GB2111187A - Multi-plate oil cooler - Google Patents

Multi-plate oil cooler Download PDF

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Publication number
GB2111187A
GB2111187A GB08232274A GB8232274A GB2111187A GB 2111187 A GB2111187 A GB 2111187A GB 08232274 A GB08232274 A GB 08232274A GB 8232274 A GB8232274 A GB 8232274A GB 2111187 A GB2111187 A GB 2111187A
Authority
GB
United Kingdom
Prior art keywords
oil
corrugations
oil cooler
cooler according
plate
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
GB08232274A
Other versions
GB2111187B (en
Inventor
Gebhard Schwarz
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 GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of GB2111187A publication Critical patent/GB2111187A/en
Application granted granted Critical
Publication of GB2111187B publication Critical patent/GB2111187B/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • 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
    • F28D9/00Heat-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
    • F28D9/0031Heat-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 conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043Heat-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 conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04Elements 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
    • 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
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0089Oil coolers

Abstract

A multi-plate water-cooled oil cooler has a pack (5) of double-walled plates (11). in the gap (16) between adjacent plates flow guides are provided in the form of outwardly stamped configurations (20,21) which improve the flow in the gap (16), so as to achieve more even throughflow over the entire cross- section and enhanced cooling efficiency. <IMAGE>

Description

SPECIFICATION Multi-plate oil cooler The invention relates to a multi-plate oil cooler, particularly a water-cooled oil cooler for internal combustion engines, comprising a plurality of package-wise superposed and oil traversed plate members which have on one of their walls outwardly directed stamped configurations which rest on the other wall of the adjacent plate member, bridging between two plate members a gap through which water flows.
Oil coolers of this type are known. The plate members generally consist of two sheet metal plates soldered along their edges and defining a cavity through which oil flows and in which turbulence generating inserts are located. All plate members which are built up in this way are connected to one another by an oil feed and an oil discharge connector, being soldered to this latter.
In order to establish the necessary stability, bosslike stamped-out configurations are furthermore provided on one of the walls of the plate member and rest on the adjacent other wall of the nearest plate member in order to determine the width of the gap between two adjacent plate members. In known constructions, these bosses are also soldered to the adjacent walls so that all in all a very compact cooling member is provided, which is also space-saving by reason of the plate construction. These packages of plates have water flowing through the gaps and according to the construction, so the flow may take place transversely of or paraliel with the connecting plate between feed and discharge connectors.If the quantity of heat to be transferred and thus the cooling efficiency require to be increased, then accordingly more plate members must be provided so that more space is required.
The present invention is based on the problem of increasing the cooling efficiency of such multiplate oil coolers without the need for additional space.
In the case of an oil cooler of the type mentioned at the outset the invention resides in that flow guide means are provided in the gap between two plate members. This design makes it possible to improve the flow conditions in the gap between the plate members and also to compel that portion of the water which would otherwise not be guided through the gaps due to resistance to flow, indeed to flow through the gaps. Thus on the one hand a comparable throughflow over the entire cross-section is achieved, which results in increased cooling efficiency.
A very simple embodiment of the invention is arrived at by constructing the flow guide means as outwardly stamped configurations which are advantageously corrugations or beads in the form or curved or straight guide profiles. This configuration achieves on the one hand the purpose of the invention, which is to increase the surface area involved in heat exchange while on the other the stability of the construction of the entire multi-plate oil cooler can be enhanced, which for example prevents a per se undesirable deformation under heat, so guaranteeing constant heat transfer conditions. A plurality of such corrugations or beads may be constructed along a curve in relation to the guide profiles, so that any breakaway of the flow is avoided.
It is also possible to apply the flow guide means to the plate members as metal guide strips, e.g.
soldering them into position. From the point of view of manufacture, it is true that this embodiment is more expensive but it can have its advantages in terms of heat dissipation.
Further features and advantages will become evident from the sub-claims as well as from the ensuing description of an example of embodiment of the invention which is shown in the accompanying drawings, in which: Fig. 1 is a perspective and diagrammatic view of a torque converter change-speed gearbox with a retarder and with a multi-plate oil cooler according to the invention, and with a casing through which coolant flows; Fig. 2 is a diagrammatic and perspective view of the disc package of the oil cooler in Fig. 1 without a casing; Fig. 3 is a diagrammatic partial section through the plate package taken on the line Ill-Ill in Fig. 2, with an indication of the casing walls, and Fig. 4 is an alternative form of guide profile in the oil cooler in the gap between two plate members viewed as in Fig. 3.
Fig. 1 shows a torque converter change-speed gearbox 1 which can be actuated via the gear shift selector rod 2. The change-speed gearbox has a retarder part 3 such as is used for utility vehicles.
The oil filling of the retarder is cooled by a multiplate type of oil cooler 4 which is constructed according to the invention and which is essentially built up from the plate package 5 shown on an enlarged scale in Fig. 2 and through which oil flows, and the water casing 6 which encloses this plate package. The cooling water which in known manner contains anti-freeze or anti-corrosive agent is supplied to the water casing 6 in a manner which is not shown in greater detail, for example via feed connector 7 and leaves the water casing 6 again via the discharge connector 8. In the case of utility vehicles, this cooling water is branched off from the cooling water system of the internal combustion engine.
The oil to be cooled passes through a feed pipe 9 and a feed connector 10 into the interior of the individual plates 11 and flows therein through turbulence-generating inserts to the oil discharge connector 12 and thence through the pipe 13 back to the retarder 3. This flow, like the flow of the cooling water, is positively maintained by a pump.
Fig. 2 shows that each plate member 11 is in per se known manner constructed from two walls 14 and 1 5 which are soldered to each other along their outer edges, Fig. 2 showing only that wall 1 5 which is towards the viewer. The interior of each of the plate members 11 communicates with the feed and discharge connectors 10 and 12.
Formed between the individual plate member 11 are gaps 16 through which water flows in the direction of the arrows 1 7. In the case of the example of embodiment illustrated, therefore, flow takes place along the longitudinal central plane 1 8 indicated by dash-dotted lines in Figs. 3 and 4 and extending through the axes 29 of the feed and discharge connectors 10 and 1 2 respectively.
With such a flow pattern, which is advantageous for reasons of space, because flat coolers result, suffer in the known constructions from the disadvantage that areas of still water form behind the oil discharge connector 12 which is upstream as shown in Fig. 3, these areas of still water adversely affecting the transfer of heat in this area.
According to the invention, therefore, there are provided alongside the bracing projections 1 9 of known constructions also outwardly extending stamped configurations in the form of corrugations 20 or 21 which form water flow guide profiles in the gap between two adjacent plate members 11 and, as can be seen clearly from the directional arrows indicating the flow pattern in the drawings, ensure that also the areas directly behind the discharge connector 12 have a sufficient throughflow of water. This development therefore increases efficiency in heat transference.
The corrugations 20, 21 are at the same height as the bracing projections 1 9 and, like these, they can at their zenith be soldered to the adjacent (not shown) and plane wall 14 of the adjacently disposed plate member 11. The result is a very compact and stable plate member which can also largely resist heat deformation and which can therefore guarantee stable flow conditions in the gaps between the individual plate members.
The plate members shown in Figs. 2 and 3 can be built up in the same way as was also the case with conventional plate members. The corrugations 20, 21 can be pressed out during the production of the wall 1 5 for the plate member.
No additional production cost is therefore required. All wall parts 1 5 can be very easily constructed in the same way so that the finished plate member can then, as Fig. 2 shows, have on one side the outwardly pressed corrugations 20, 21 while on the other side, as was previously the case, it may have a plane wall 14. It is naturally also possible to press such corrugations out of both side walls so that in each case the corrugations can be soldered to one another. The advantage of such an embodiment would be the greater width of the gap which could be achieved between the plate members.
As can be seen in Fig. 3, the corrugations 20, 21 are located symmetrically in relation to the longitudinal central plane 1 8. The coolant which flows through the water casing, of which the walls 25 are indicated, is thus also conveyed into areas in which zones of still water would occur but for the construction according to the invention. As Fig. 4 shows, with an otherwise symmetrical overall construction of the multi-plate cooler, the corrugations 20, 21 can also be located symmetrically of the transverse central plane 22.
Fig. 4 shows an alternative embodiment in that here the guide profiles formed by the corrugations 20, 21 are in each case formed by two corrugations 20a, 20b or 21 a, 21 b disposed one after another along the guide profile contour, which has the advantage that pressure equalisation is possible in the intermediate space 23 between the serially disposed corrugations 20a and 20b or 21 a and 21 b, so that no areas of still water are created in the region of the corrugations. In addition, in the case of the embodiment shown in Fig. 4, further guide profiles are provided in the form of corrugations 24 which are disposed likewise symmetrically of the longitudinal central plane 8 and, as is not shown in greater detail, also symmetrically in relation to the transverse central plane 22.Therefore, with such a symmetrical arrangement, it is immaterial in what direction of the plate cooler, the flow occurs along the longitudinal central plane 1 8.
It goes without saying that it is also possible to form corresponding guide profiles by corrugations if the flow is parallel with the transverse central plane 22. In this case, areas of still water occur behind the feed and discharge connectors 10 and 12 respectively, so that guide profiles must be so provided that these areas are covered. Thus, an improvement in performance can be achieved by the invention also in the case of multi-plate oil coolers with a transverse flow pattern, particularly if the form of the plates is different and if there is a larger area behind the feed or discharge connectors.
Naturally, it is also possible to construct the guide profiles in some other manner, for example in the form of solid strips and incorporate them into the gap 1 6. The manner of producing the guide profiles which is shown in the embodiment illustrated is however particularly simple and is therefore to be recommended for mass production purposes.
The invention has been explained with reference to a multi-piate oil cooler which is used on a change-speed gearbox which has a retarder.
Naturally, multi-plate oil coolers of the type according to the invention can also be used in all other applications where space-saving coolers with a high heat exchange capacity have to be provided. Therefore, the embodiment of oil coolers according to the invention has found particularly numerous application possibilities in motor vehicle construction for cooling the oil in internal combustion engines.

Claims (10)

1. Multi-plate oil cooler, for example a watercooled oil cooler for an internal combustion engine, the cooler comprising a pack of superposed oil traversed plates each having on one wall outwardly directed configurations which abut a wall of an adjacent plate, bridging between the two plates a gap through which coolant flows.
wherein flow guides are provided in the gap between two plates.
2. A cooler according to claim 1, wherein the flow guide are additional outwardly directed configurations.
3. A cooler according to claim 2, wherein the outwardly directed flow guide configurations are corrugations in the form of curved or straight guides.
4. A cooler according to claim 3, wherein the corrugations are disposed symmetrically of a longitudinal central plane which extends through the axes of oil feed and discharge connectors of the cooler.
5. Oil cooler according to claim 4, characterised in that the corrugations (20, 21, 24) are disposed symmetrically of the transverse central plane (19).
6. Oil cooler according to one of claims 1 to 5 through which water flows in the direction of the longitudinal central plane through the feed and discharge connectors, characterised in that associated with each oil feed and/or oil discharge connector (10, 12) there are corrugations (20) which extend from the connector in each case obliquely outwardly towards the longitudinal central plane (18).
7. Oil cooler according to one of claims 1 to 6, characterised in that the corrugations (20, 21 , 24) are at least partly soldered to the adjacent plate at the points at which they rest thereon.
8. Oil cooler according to claim 9, characterised in that guide profiles are formed by a plurality of corrugations (20a, 20b, 21 a, 21 b) disposed along a curve or a straight line.
9. Oil cooler according to claim 1, characterised in that the flow guide means are mounted on the plate members in the form of baffles.
10. Oil cooler according to claim 9, characterised in that the baffles are produced as solid guide strips from readily heat conductive material.
GB08232274A 1981-12-10 1982-11-11 Multi-plate oil cooler Expired GB2111187B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3148941A DE3148941C2 (en) 1981-12-10 1981-12-10 Water-cooled oil cooler for internal combustion engines

Publications (2)

Publication Number Publication Date
GB2111187A true GB2111187A (en) 1983-06-29
GB2111187B GB2111187B (en) 1984-11-14

Family

ID=6148390

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08232274A Expired GB2111187B (en) 1981-12-10 1982-11-11 Multi-plate oil cooler

Country Status (4)

Country Link
DE (1) DE3148941C2 (en)
FR (1) FR2518243B1 (en)
GB (1) GB2111187B (en)
IT (2) IT1153384B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197169A1 (en) * 1985-04-09 1986-10-15 Ing. Walter Hengst GmbH & Co. KG Oil cooler
EP1931931A1 (en) * 2005-08-26 2008-06-18 SWEP International AB End plate for plate heat exchanger
WO2011126449A1 (en) * 2010-04-08 2011-10-13 Titanx Engine Cooling Holding Ab Heat exchanger with bypass stopper, oil cooling system and method for cooling oil
DE19716845B4 (en) * 1995-12-16 2013-02-21 Behr Gmbh & Co. Kg Heat exchanger

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3242361C3 (en) * 1982-11-16 1994-07-28 Behr Gmbh & Co Disc-type oil cooler
DE3544921A1 (en) * 1985-12-19 1987-07-02 Sueddeutsche Kuehler Behr Disc cooler, in particular oil cooler
DE4106963A1 (en) * 1991-03-05 1992-09-10 Rahmer & Jansen Gmbh Water cooler for hydraulic system or is engine - consists of conventional oil-air cooler, in cast body, for use with two liq. mediums
DE4122961A1 (en) * 1991-07-11 1993-01-14 Kloeckner Humboldt Deutz Ag HEAT EXCHANGER
DE4437877C2 (en) * 1994-10-22 1997-08-07 Behr Gmbh & Co Heat exchangers, especially oil coolers
DE19707647B4 (en) * 1997-02-26 2007-03-01 Behr Gmbh & Co. Kg plate cooler
DE102006023525A1 (en) * 2006-05-19 2007-11-29 Zf Friedrichshafen Ag Coolant guide for a retarder, especially a hydrodynamic retarder of a motor vehicle, comprises coolant lines guided along and very close to a transmission casing

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Publication number Priority date Publication date Assignee Title
GB464004A (en) * 1935-08-03 1937-04-09 Bergedorfer Eisenwerk Ag Improvements in or relating to plate heat exchangers
FR813272A (en) * 1936-11-12 1937-05-29 Anciens Etablissements Lamblin Cooling radiators for engines or other applications
GB500294A (en) * 1937-08-05 1939-02-06 Edwin Prestage Improvements in or relating to plate-type heat-exchange apparatus
FR845942A (en) * 1937-11-15 1939-09-05 Silkeborg Maskinfabrik Plate for heat exchanger devices
GB654395A (en) * 1942-05-22 1951-06-13 Gyorgy Jendrassik Improvements in or relating to plate heat exchangers for fluids
NL187818C (en) * 1952-03-14 Hochtief Ag Hoch Tiefbauten DEVICE FOR REPLACING A SUPPORT FLUID BY A REPLACEMENT MASS.
US3532161A (en) * 1968-06-27 1970-10-06 Aqua Chem Inc Plate type heat exchanger
US3631923A (en) * 1968-06-28 1972-01-04 Hisaka Works Ltd Plate-type condenser having condensed-liquid-collecting means
FR2280871A1 (en) * 1974-08-01 1976-02-27 Chausson Usines Sa Built-up construction heat exchanger - has panels with peripheral support surface and embossed crown sections
GB2023796B (en) * 1978-06-19 1982-08-25 Gen Motors Corp Hollow-plate heat exchange element

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0197169A1 (en) * 1985-04-09 1986-10-15 Ing. Walter Hengst GmbH & Co. KG Oil cooler
DE19716845B4 (en) * 1995-12-16 2013-02-21 Behr Gmbh & Co. Kg Heat exchanger
EP1931931A1 (en) * 2005-08-26 2008-06-18 SWEP International AB End plate for plate heat exchanger
EP1931931A4 (en) * 2005-08-26 2010-04-21 Swep Int Ab End plate for plate heat exchanger
US8684071B2 (en) 2005-08-26 2014-04-01 Swep International Ab End plate for plate heat exchanger
WO2011126449A1 (en) * 2010-04-08 2011-10-13 Titanx Engine Cooling Holding Ab Heat exchanger with bypass stopper, oil cooling system and method for cooling oil
CN102834687A (en) * 2010-04-08 2012-12-19 泰坦X引擎冷却控股公司 Heat exchanger with bypass stopper, oil cooling system and method for cooling oil
US9541334B2 (en) 2010-04-08 2017-01-10 Titanx Engine Cooling Holding Ab Heat exchanger with bypass stopper, oil cooling system and method for cooling oil

Also Published As

Publication number Publication date
IT8254044V0 (en) 1982-12-09
IT1153384B (en) 1987-01-14
IT8224653A0 (en) 1982-12-09
GB2111187B (en) 1984-11-14
FR2518243B1 (en) 1988-10-21
IT8224653A1 (en) 1984-06-09
DE3148941C2 (en) 1985-02-14
DE3148941A1 (en) 1983-06-23
FR2518243A1 (en) 1983-06-17

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Legal Events

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PCNP Patent ceased through non-payment of renewal fee