WO2009130125A1 - Heat exchanger, particularly oil cooler - Google Patents

Heat exchanger, particularly oil cooler Download PDF

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Publication number
WO2009130125A1
WO2009130125A1 PCT/EP2009/054131 EP2009054131W WO2009130125A1 WO 2009130125 A1 WO2009130125 A1 WO 2009130125A1 EP 2009054131 W EP2009054131 W EP 2009054131W WO 2009130125 A1 WO2009130125 A1 WO 2009130125A1
Authority
WO
WIPO (PCT)
Prior art keywords
bypass
heat exchanger
channel
housing
valve
Prior art date
Application number
PCT/EP2009/054131
Other languages
German (de)
French (fr)
Inventor
Herbert Jainek
Original Assignee
Mann+Hummel Gmbh
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 Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Publication of WO2009130125A1 publication Critical patent/WO2009130125A1/en

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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
    • F28D9/0031—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 conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—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 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
    • F28D9/005—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 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 the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • F28D2021/0089—Oil coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the invention relates to a heat exchanger, in particular a heat exchanger
  • Oil cooler according to the preamble of claim 1.
  • the oil cooler comprises a plurality pa ⁇ in a housing
  • cooler consisting of a parallel to the cooling channels
  • the valve body of the bypass valve is
  • the outside forms on the housing of the oil cooler
  • the invention is based on the object, with simple constructive
  • the heat exchanger according to the invention is particularly suitable for use in motor vehicles, preferably for internal combustion engines in motor vehicles.
  • the heat exchanger is, for example, an oil cooler with which the circulated oil of an internal combustion engine is cooled.
  • the heat exchanger has a housing with therein arranged cooling channels for the medium to be cooled and a bypass channel, which is associated with a bypass valve, which is advantageously integrated in the heat exchanger.
  • the bypass valve keeps the bypass channel closed under normal conditions. Particularly at low temperatures and correspondingly viscous medium, the pressure of the medium is sufficient to open the valve body of the bypass valve against the force of a closing spring and thereby release the bypass channel, so that the medium, in particular bypassing the regular cooling channels directly via an outflow opening from the housing is derived.
  • the valve body of the bypass valve is guided in the closed position through an opening in the housing and protrudes in the transverse direction in the bypass channel, wherein in the open position, the valve body is at least partially pulled out of the bypass channel to release the bypass flow. Since the valve body now protrudes transversely to the flow direction in the bypass channel and thus no longer necessarily forms the conclusion of the bypass channel, it is possible to arrange the outlet opening of the bypass channel regardless of the position of the bypass valve. This additional design freedom is created with regard to the positioning of the bypass valve and outlet of the bypass.
  • the bypass valve is at a distance from the bypass outlet opening.
  • bypass valve which generally protrudes beyond the outside of the housing, at a location of the heat exchanger housing at which a sufficient installation space is available in the installed position on the engine or on other components.
  • bypass outlet opening can be arranged in principle at any point of the housing of the heat exchanger.
  • the bypass channel opens within the housing in a discharge channel, in which also open the cooling channels through which the medium to be cooled is usually performed.
  • the housing outlet opening of the bypass falls into this sem case with the outlet opening of the outflow together.
  • the outlet opening is arranged, for example, on the same side of the housing as the inlet opening for introducing the medium to be cooled into the heat exchanger.
  • the bypass valve of the inlet opening is axially opposite, that is arranged on the opposite side of the housing.
  • the bypass channel preferably extends adjacent to the housing inner wall. This is expediently formed by a cover plate, which is identical to the housing wall, so that the bypass channel runs parallel to the cover plate. As far as the bypass channel opens into the common outflow channel with the cooling channels, the outflow channel is expediently directed perpendicular to the bypass channel and thus also to the cover plate.
  • bypass valve is formed separately from the housing of the heat exchanger and flanged from the outside to the housing and connected by suitable means to the housing.
  • connection between bypass valve and the outside of the housing for example, by soldering, which in the same Ar- Beits Republic can be performed as the preferably in Lötver ⁇
  • bypass entry opening is expediently zwi ⁇ in a partition wall
  • the valve is preferably on
  • Fig. 1 shows a section through an executed as an oil cooler
  • bypass valve outside a bypass valve
  • Fig. 2 is a detailed illustration of the bypass valve including the bypass channel and a parallel to the bypass channel Küh ⁇
  • Fig. 3 is a section through a heat exchanger in another
  • FIG. 4 is a plan view of the heat exchanger of FIG .. 3
  • the heat exchanger 1 has a housing 2 which has a base
  • lungskanal 5 is flow-separated.
  • the fluid first flows into an inlet connected to the inlet opening 6.
  • passage channel 7, which is directed vertically to the plane of the base plate 3 and the cover plate 4. Normally, the fluid branches off from the inflow channel 7 into the cooling channels 9, which extend perpendicularly to the inflow channel 7.
  • cooling channels 5 open into a discharge channel 11 which is connected to an outlet opening 8 in the base plate 3 and parallel to the inlet channel 7 extends.
  • the bypass channel 10 communicates with corresponding openings both with the inflow 7 and the outflow channel 11.
  • the bypass channel 10, a bypass valve 12 is assigned, which rests on the outside of the housing 2 and is designed as a separate component.
  • the bypass valve housing is connected to the housing outside of the housing 2, for example soldered to the housing 2.
  • the valve body 14 of the bypass valve 12 is to be adjusted between a closing position closing the flow through the bypass passage 10, in which the valve body projects transversely into the bypass passage 10, and an opening position in which the bypass passage 10 is released.
  • FIG. 2 shows an illustration of the bypass valve 12.
  • the longitudinal axis of the valve body 14 and the direction of movement of the valve body extend transversely to the longitudinal direction of the bypass channel 10.
  • the valve body 14 protrudes through an opening 21, which in the cover 4 as part of the housing 2 is introduced.
  • the longitudinal direction of the valve body 14 is coaxial with the longitudinal axis of the inflow 7, accordingly, the opening 21 in the cover plate 4 is axially or diametrically opposite to Inlet opening 6 in the base plate 3. It is also possible, however, a relative to the longitudinal axis of the inflow 7 displaced position of the opening 21, in which the opening 21 but still communicates with the inflow channel 7.
  • a channel inlet opening 19 are provided in the transition between the inlet channel 7 and the heat exchanger element 5 and a bypass inlet opening 20, via which the introduced via the inlet channel 7 medium is to be introduced into the bypass channel 10.
  • the valve body 14 closes in its closed position, the bypass inlet opening 20.
  • the valve body 14 is formed like a stem, wherein the widened Stempelfuß rests in the closed position on the bypass inlet opening 20, so that no medium from the inflow passage 7 can flow into the bypass passage 10.
  • the valve body 14 forming a plunger is acted upon by the force of a valve spring 16 in the closed position.
  • the base of the valve spring 16 is supported on a screw plug 17 which is received in the valve housing 15.
  • the valve housing 15 thus forms a seat for the screw plug 17, wherein on the cover plate 4 side facing between the screw plug 17 and a shoulder on the inside of the valve housing 15, a sealing ring 18 is inserted.
  • bypass inlet opening of the valve body 14 To release the bypass inlet opening of the valve body 14 must be raised against the force of the valve spring 16 from the closed position. In the raised position, the bypass entry opening 20 is released and the medium can flow into the bypass channel 10.
  • the bypass valve 12 with the valve body 14, the valve housing 15, the valve spring 16, the screw plug 17 and the sealing ring 18 is pre-assembled and screwed onto the housing of the radiator.
  • FIG. 3 another embodiment of a heat exchanger 1 is shown.
  • the cover plate 4 is formed in contrast to the previous embodiment with a raised sipe 22, which creates space for the running on the inside of the cover plate 24 bypass channel 10.
  • the channel outlet opening 23 and the coaxial for this lying bypass outlet opening 23a via which the fluid is passed in each case into the outflow channel in the housing.
  • the bead 22 is shown in plan view, which is introduced into the cover plate 4. The width of the bead is limited to the width of the underlying bypass channel.

Abstract

The invention relates to a heat exchanger, particularly an oil cooler, having cooling channels (9) disposed in a housing (2) and a bypass (10) that can be closed by a bypass valve (12). The valve body (14) of the bypass valve (12) is guided by an opening (21) in the housing (2) and protrudes in the transverse direction into the bypass channel (10).

Description

Beschreibung description
Wärmetauscher, insbesondere Ölkühler Technisches Gebiet [0001] Die Erfindung bezieht sich auf einen Wärmetauscher, insbesondere einenTECHNICAL FIELD The invention relates to a heat exchanger, in particular a heat exchanger
Ölkühler, nach dem Oberbegriff des Anspruches 1.Oil cooler, according to the preamble of claim 1.
Stand der TechnikState of the art
[0002] In der EP 1 780 384 A2 wird ein Ölkühler für eine Verbrennungskraftma¬In EP 1 780 384 A2, an oil cooler for a Verbrennungsennungskraftma¬
schine beschrieben, der zur Kühlung beispielsweise von Schmieröl für dendescribed for cooling, for example, lubricating oil for the
Motor dient. Der Ölkühler umfasst in einem Gehäuse eine Mehrzahl pa¬Motor is used. The oil cooler comprises a plurality pa¬ in a housing
rallel verlaufender Kühlungskanäle, durch die das herangeführte Öl strömt.Rallel extending cooling channels through which the oil supplied flows.
Für den Fall kalten und dadurch zähflüssigen Öls ist ein Bypass im Öl¬In the case of cold and thus viscous oil is a bypass in Öl¬
kühler vorgesehen, bestehend aus einem parallel zu den Kühlungskanälenprovided cooler, consisting of a parallel to the cooling channels
verlaufenden Bypasskanal, der zu einer Austrittsöffnung mit darin ange¬extending bypass channel, which ange¬ to an outlet opening with therein
ordnetem Bypassventil geführt ist. Der Ventilkörper des Bypassventils wirdordered bypass valve is guided. The valve body of the bypass valve is
über eine Schließfeder in der Schließposition gehalten, wobei der Druckheld by a closing spring in the closed position, the pressure
des zähflüssigen Öls den Ventilkörper gegen die Kraft der Feder öffnet.of the viscous oil opens the valve body against the force of the spring.
[0003] Bei dieser Ausgestaltung bildet das außen auf das Gehäuse des ÖlkühlersIn this embodiment, the outside forms on the housing of the oil cooler
aufgesetzte Bypassventil den Abschluss des Bypasskanals. Je nach ge¬attached bypass valve the completion of the bypass channel. Depending ge ge
wünschter Position der Bypassaustrittsöffnung muss daher an entspre¬desired position of the bypass outlet opening must therefore be on
chender Stelle ein Bypassventil vorgesehen werden, was jedoch aufgrundChender place a bypass valve are provided, but due to
des Überstandes des Ventils über die Gehäuseaußenseite zu konstruk¬the supernatant of the valve on the outside of the housing zu konstruk¬
tiven Einschränkungen führt. Offenbarung der Erfindungtive restrictions. Disclosure of the invention
[0004] Der Erfindung liegt die Aufgabe zu Grunde, mit einfachen konstruktivenThe invention is based on the object, with simple constructive
Maßnahmen einen variabel einsetzbaren Wärmetauscher zu schaffen.Measures to create a variable heat exchanger.
[0005] Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Anspruches 1 gelöst. Die Unteransprüche geben zweckmäßige Weiterbildungen an.This object is achieved by the features of claim 1. The dependent claims indicate expedient developments.
[0006] Der erfindungsgemäße Wärmetauscher eignet sich insbesondere zur Anwendung in Kraftfahrzeugen, vorzugsweise für Verbrennungsmotoren in Kraftfahrzeugen. Es handelt sich bei dem Wärmetauscher beispielsweise um einen Ölkühler, mit dem das im Kreislauf geführte Öl einer Brennkraftmaschine gekühlt wird.The heat exchanger according to the invention is particularly suitable for use in motor vehicles, preferably for internal combustion engines in motor vehicles. The heat exchanger is, for example, an oil cooler with which the circulated oil of an internal combustion engine is cooled.
[0007] Der Wärmetauscher weist ein Gehäuse mit darin angeordneten Kühlungskanälen für das zu kühlende Medium auf sowie einen Bypasskanal, dem ein Bypassventil zugeordnet ist, das vorteilhafterweise in den Wärmetauscher integriert ist. Das Bypassventil hält den Bypasskanal unter regulären Bedingungen geschlossen. Insbesondere bei niedrigen Temperaturen und entsprechend zähflüssigem Medium reicht der Druck des Mediums aus, um den Ventilkörper des Bypassventils gegen die Kraft einer Schließfeder zu öffnen und hierdurch den Bypasskanal freizugeben, so dass das Medium insbesondere unter Umgehung der regulären Kühlungskanäle unmittelbar über eine Abströmöffnung aus dem Gehäuse abgeleitet wird. [0008] Erfindungsgemäß ist vorgesehen, dass der Ventilkörper des Bypassventils in der Schließstellung durch eine Öffnung im Gehäuse geführt ist und in Querrichtung in den Bypasskanal einragt, wobei in Öffnungsstellung der Ventilkörper zumindest teilweise aus dem Bypasskanal zur Freigabe der Bypassströmung herausgezogen ist. Da der Ventilkörper nunmehr quer zur Strömungsrichtung in den Bypasskanal einragt und somit nicht mehr zwangsläufig den Abschluss des Bypasskanals bildet, ist es möglich, die Austrittsöffnung des Bypasskanals unabhängig von der Position des Bypassventils anzuordnen. Damit werden zusätzliche konstruktive Freiheiten geschaffen hinsichtlich der Positionierung von Bypassventil und Abströmöffnung des Bypass. In bevorzugter Ausführung liegt das Bypassventil auf Abstand zur Bypassaustrittsöffnung. Diese funktionale Trennung von By- passaustrittsöffnung und Bypassventil ermöglicht es beispielsweise, das in der Regel über die Gehäuseaußenseite überstehende Bypassventil an einer Stelle des Wärmetauschergehäuses anzuordnen, an der in Einbaulage am Motor oder an sonstigen Bauteilen ein ausreichender Einbauraum zur Verfügung steht. Außerdem kann die Bypassaustrittsöffnung im Prinzip an beliebiger Stelle des Gehäuses des Wärmetauschers angeordnet werden.The heat exchanger has a housing with therein arranged cooling channels for the medium to be cooled and a bypass channel, which is associated with a bypass valve, which is advantageously integrated in the heat exchanger. The bypass valve keeps the bypass channel closed under normal conditions. Particularly at low temperatures and correspondingly viscous medium, the pressure of the medium is sufficient to open the valve body of the bypass valve against the force of a closing spring and thereby release the bypass channel, so that the medium, in particular bypassing the regular cooling channels directly via an outflow opening from the housing is derived. According to the invention it is provided that the valve body of the bypass valve is guided in the closed position through an opening in the housing and protrudes in the transverse direction in the bypass channel, wherein in the open position, the valve body is at least partially pulled out of the bypass channel to release the bypass flow. Since the valve body now protrudes transversely to the flow direction in the bypass channel and thus no longer necessarily forms the conclusion of the bypass channel, it is possible to arrange the outlet opening of the bypass channel regardless of the position of the bypass valve. This additional design freedom is created with regard to the positioning of the bypass valve and outlet of the bypass. In a preferred embodiment, the bypass valve is at a distance from the bypass outlet opening. This functional separation of by-pass outlet opening and bypass valve makes it possible, for example, to arrange the bypass valve, which generally protrudes beyond the outside of the housing, at a location of the heat exchanger housing at which a sufficient installation space is available in the installed position on the engine or on other components. In addition, the bypass outlet opening can be arranged in principle at any point of the housing of the heat exchanger.
[0009] Gemäß einer bevorzugten Weiterbildung ist vorgesehen, dass der Bypasskanal innerhalb des Gehäuses in einen Abströmkanal mündet, in den auch die Kühlungskanäle einmünden, durch die das zu kühlende Medium im Regelfall geführt ist. Die Gehäuseaustrittsöffnung des Bypass fällt in die- sem Fall mit der Austrittsöffnung des Abströmkanals zusammen. Außerdem genügt es, lediglich einen einzigen Abströmkanal im Gehäuse vorzusehen, dem die Aufgabe eines Sammelkanals zukommt und der das gekühlte Fluid aus allen Kühlungskanälen und auch aus dem Bypass sammelt und schließlich aus dem Gehäuse ableitet. Die Austrittsöffnung ist beispielsweise an der gleichen Gehäuseseite wie die Eintrittsöffnung zum Einführen des zu kühlenden Mediums in den Wärmetauscher angeordnet. Gemäß eines weiteren Ausführungsbeispieles ist vorgesehen, dass das Bypassventil der Eintrittsöffnung axial gegenüberliegt, also auf der gegenüberliegenden Gehäuseseite angeordnet ist.According to a preferred embodiment it is provided that the bypass channel opens within the housing in a discharge channel, in which also open the cooling channels through which the medium to be cooled is usually performed. The housing outlet opening of the bypass falls into this sem case with the outlet opening of the outflow together. In addition, it is sufficient to provide only a single outflow channel in the housing, which plays the role of a collecting channel and collects the cooled fluid from all the cooling channels and also from the bypass and finally derived from the housing. The outlet opening is arranged, for example, on the same side of the housing as the inlet opening for introducing the medium to be cooled into the heat exchanger. According to a further embodiment, it is provided that the bypass valve of the inlet opening is axially opposite, that is arranged on the opposite side of the housing.
[0010] Der Bypasskanal verläuft vorzugsweise benachbart zur Gehäuseinnenwand. Diese wird zweckmäßigerweise von einer Abdeckplatte gebildet, die mit der Gehäusewandung identisch ist, so dass der Bypasskanal parallel zur Abdeckplatte verläuft. Soweit der Bypasskanal in den gemeinsamen Abströmkanal mit den Kühlungskanälen einmündet, ist der Abströmkanal zweckmäßigerweise senkrecht zum Bypasskanal und damit auch zur Abdeckplatte gerichtet.The bypass channel preferably extends adjacent to the housing inner wall. This is expediently formed by a cover plate, which is identical to the housing wall, so that the bypass channel runs parallel to the cover plate. As far as the bypass channel opens into the common outflow channel with the cooling channels, the outflow channel is expediently directed perpendicular to the bypass channel and thus also to the cover plate.
[0011] Gemäß weiterer vorteilhafter Ausführung ist das Bypassventil separat vom Gehäuse des Wärmetauschers ausgebildet und von außen an das Gehäuse angeflanscht und mithilfe geeigneter Maßnahme mit dem Gehäuse verbunden. Die Verbindung zwischen Bypassventil und der Außenseite des Gehäuses erfolgt beispielsweise durch Löten, was im gleichen Ar- beitsschritt durchgeführt werden kann wie der vorzugsweise im Lötver¬According to another advantageous embodiment, the bypass valve is formed separately from the housing of the heat exchanger and flanged from the outside to the housing and connected by suitable means to the housing. The connection between bypass valve and the outside of the housing, for example, by soldering, which in the same Ar- Beitsschritt can be performed as the preferably in Lötver¬
fahren herzustellende Kühler. Grundsätzlich kommt aber auch eine ein¬drive to be produced radiator. In principle, however, a ein¬
teilige Ausführung von Ventilgehäuse und Gehäuse des WärmetauschersPartial design of valve body and housing of the heat exchanger
in Betracht.into consideration.
[0012] Die Bypasseintrittsöffnung ist zweckmäßigerweise in eine Trennwand zwi¬The bypass entry opening is expediently zwi¬ in a partition wall
schen einem der Kühlungskanäle und dem Bypasskanal eingebracht. Die¬introduced one of the cooling channels and the bypass channel. Die¬
se Bypasseintrittsöffnung wird vorteilhafterweise von dem Ventilkörper desThe bypass entry opening is advantageously formed by the valve body of the
Bypassventils beaufschlagt und dadurch in der Schließstellung des VentilsBypass valve applied and thereby in the closed position of the valve
verschlossen. Das Medium strömt in Querrichtung über die Bypassein¬locked. The medium flows in the transverse direction over the Bypassein¬
trittsöffnung in den Bypasskanal ein, wobei die Bewegung des Ventil¬outlet opening in the bypass channel, wherein the movement of the Ventil¬
körpers ebenfalls in Querrichtung erfolgt. Das Ventil liegt vorzugsweise aufBody also takes place in the transverse direction. The valve is preferably on
der der Bypasseintrittsöffnung abgewandten Außenseite des Bypasska-the outside of the bypass cable facing away from the bypass entry opening
nals.Nalles.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
[0013] Weitere Vorteile und zweckmäßige Ausführungen sind den weiteren An¬Further advantages and expedient embodiments are the further An¬
sprüchen, der Figurenbeschreibung und den Zeichnungen zu entnehmen.spell out, the figure description and the drawings.
Es zeigen:Show it:
Fig. 1 einen Schnitt durch einen als Ölkühler ausgeführten Wärme¬Fig. 1 shows a section through an executed as an oil cooler Wärme¬
tauscher, der in einem Gehäuse eine Mehrzahl parallel verlaufender Küh¬exchanger, which in a housing a plurality of parallel Küh¬
lungskanäle für das zu kühlende Medium aufweist, wobei an der Gehäuse¬has flow channels for the medium to be cooled, wherein on the Gehäus¬
außenseite ein Bypassventil angeordnet ist,outside a bypass valve is arranged
Fig. 2 eine detaillierte Darstellung des Bypassventils einschließlich des Bypasskanals und eines parallel zum Bypasskanal verlaufenden Küh¬Fig. 2 is a detailed illustration of the bypass valve including the bypass channel and a parallel to the bypass channel Küh¬
lungskanals,development channel,
Fig. 3 einen Schnitt durch einen Wärmetauscher in einer weiterenFig. 3 is a section through a heat exchanger in another
Ausführung,Execution,
Fig. 4 eine Draufsicht auf den Wärmetauscher nach Fig. 3.4 is a plan view of the heat exchanger of FIG .. 3
[0014] In den Figuren sind gleiche Bauteile mit gleichen Bezugszeichen ver¬In the figures, the same components ver¬ with the same reference numerals
sehen.see.
Ausführungsformen der ErfindungEmbodiments of the invention
[0015] Bei dem in Fig. 1 dargestellten Wärmetauscher 1 handelt es sich ins¬In the heat exchanger 1 shown in Fig. 1 is ins¬
besondere um einen Ölkühler zur Kühlung von Öl einer Brennkraftma¬special to an oil cooler for cooling of a Brennkraftma¬ oil
schine. Der Wärmetauscher 1 weist ein Gehäuse 2 auf, das eine Grund¬machine. The heat exchanger 1 has a housing 2 which has a base
platte 3 und eine parallel zur Grundplatte angeordnete Abdeckplatte 4 um-plate 3 and a cover plate 4 arranged parallel to the base plate.
fasst. Im Gehäuse 2 des Wärmetauschers 1 sind eine Mehrzahl plattenför-summarizes. In the housing 2 of the heat exchanger 1, a plurality of plates för
miger und parallel zueinander verlaufender Wärmetauscherelemente 5 an¬miger and mutually parallel heat exchanger elements 5 an¬
geordnet, die parallel zur Grundplatte 3 und zur Abdeckplatte 4 liegen undordered, which are parallel to the base plate 3 and the cover plate 4 and
zwischen denen Kühlungskanäle 9 für das zu kühlende Medium gebildetformed between which cooling channels 9 for the medium to be cooled
sind. Unmittelbar parallel zur Abdeckplatte 4 verläuft auf der Innenseite einare. Immediately parallel to the cover plate 4 extends on the inside
Bypasskanal 10, der gegenüber dem nächstliegenden, parallelen Küh¬Bypass channel 10, opposite to the nearest, parallel Küh¬
lungskanal 5 strömungssepariert ist.lungskanal 5 is flow-separated.
[0016] In die Grundplatte 3 ist eine Eintrittsöffnung 6 eingebracht, über die das zuIn the base plate 3, an inlet opening 6 is introduced, via which the
kühlende Medium in das Innere des Gehäuses 2 eingeleitet wird. Das Me¬cooling medium is introduced into the interior of the housing 2. The Me¬
dium strömt zunächst in einen mit der Einstrittsöffnung 6 verbundenen Ein- trittskanal 7, der vertikal zur Ebene der Grundplatte 3 bzw. der Abdeckplatte 4 gerichtet ist. Von dem Einströmkanal 7 verzweigt im Normalfall das Fluid in die Kühlungskanäle 9, die sich senkrecht zum Einströmkanal 7 erstrecken.The fluid first flows into an inlet connected to the inlet opening 6. passage channel 7, which is directed vertically to the plane of the base plate 3 and the cover plate 4. Normally, the fluid branches off from the inflow channel 7 into the cooling channels 9, which extend perpendicularly to the inflow channel 7.
[0017] Abströmseitig münden die Kühlungskanäle 5 in einen Abströmkanal 11 , der mit einer Austrittsöffnung 8 in der Grundplatte 3 verbunden ist und parallel zum Einströmkanal 7 verläuft.Downstream, the cooling channels 5 open into a discharge channel 11 which is connected to an outlet opening 8 in the base plate 3 and parallel to the inlet channel 7 extends.
[0018] Der Bypasskanal 10 kommuniziert mit entsprechenden Öffnungen sowohl mit dem Einströmkanal 7 als auch mit dem Abströmkanal 11. Dem Bypasskanal 10 ist ein Bypassventil 12 zugeordnet, das auf der Außenseite des Gehäuses 2 aufsitzt und als separates Bauteil ausgeführt ist. Das By- passventilgehäuse ist mit der Gehäuseaußenseite des Gehäuses 2 verbunden, beispielsweise an das Gehäuse 2 angelötet. Der Ventilkörper 14 des Bypassventils 12 ist zwischen einer den Strömungsdurchfluss durch den Bypasskanal 10 verschließenden Schließposition, in der der Ventilkörper quer in den Bypasskanal 10 einragt, und einer Öffnungsposition zu verstellen, in der der Bypasskanal 10 freigegeben ist. Über eine Umlenkplatte 13, die auf der Innenseite der Abdeckplatte 4 im Bereich der Stirnseiten des Bypasskanals 10 angeordnet ist, erfolgt eine Umlenkung der in den Bypasskanal 10 hineinführenden bzw. der aus dem Bypasskanal herausgeführten Strömung. [0019] Fig. 2 zeigt eine Darstellung des Bypassventils 12. Die Längsachse des Ventilkörpers 14 und die Bewegungsrichtung des Ventilkörpers verlaufen quer zur Längsrichtung des Bypasskanals 10. Der Ventilkörper 14 ragt durch eine Öffnung 21 hindurch, die in die Abdeckplatte 4 als Bestandteil des Gehäuses 2 eingebracht ist. Die Verstellrichtung des Ventilkörpers 14 liegt somit quer zur Ebene der Abdeckplatte 4 und zugleich in Achsrichtung des Einströmkanals 7. Die Längsachse des Ventilkörpers 14 liegt koaxial zur Längsachse des Einströmkanals 7, dementsprechend befindet sich die Öffnung 21 in der Abdeckplatte 4 axial bzw. diametral gegenüberliegend zur Einströmöffnung 6 in der Grundplatte 3. Möglich ist aber auch eine gegenüber der Längsachse des Einströmkanals 7 verschobene Position der Öffnung 21 , in der die Öffnung 21 aber noch mit dem Einströmkanal 7 kommuniziert.The bypass channel 10 communicates with corresponding openings both with the inflow 7 and the outflow channel 11. The bypass channel 10, a bypass valve 12 is assigned, which rests on the outside of the housing 2 and is designed as a separate component. The bypass valve housing is connected to the housing outside of the housing 2, for example soldered to the housing 2. The valve body 14 of the bypass valve 12 is to be adjusted between a closing position closing the flow through the bypass passage 10, in which the valve body projects transversely into the bypass passage 10, and an opening position in which the bypass passage 10 is released. Via a deflecting plate 13, which is arranged on the inside of the cover plate 4 in the region of the front sides of the bypass channel 10, there is a deflection of the leading into the bypass passage 10 and out of the bypass channel flow. 2 shows an illustration of the bypass valve 12. The longitudinal axis of the valve body 14 and the direction of movement of the valve body extend transversely to the longitudinal direction of the bypass channel 10. The valve body 14 protrudes through an opening 21, which in the cover 4 as part of the housing 2 is introduced. The longitudinal direction of the valve body 14 is coaxial with the longitudinal axis of the inflow 7, accordingly, the opening 21 in the cover plate 4 is axially or diametrically opposite to Inlet opening 6 in the base plate 3. It is also possible, however, a relative to the longitudinal axis of the inflow 7 displaced position of the opening 21, in which the opening 21 but still communicates with the inflow channel 7.
[0020] Ebenfalls in Achsrichtung liegend sind eine Kanaleintrittsöffnung 19 im Übergang zwischen dem Einströmkanal 7 und dem Wärmetauscherelement 5 sowie eine Bypasseintrittsöffnung 20 vorgesehen, über die das über den Einströmkanal 7 herangeführte Medium in den Bypasskanal 10 einzuleiten ist. Der Ventilkörper 14 verschließt in seiner Schließposition die Bypasseintrittsöffnung 20. Hierzu ist der Ventilkörper 14 stempeiförmig ausgebildet, wobei der verbreiterte Stempelfuß in der Schließposition auf der Bypasseintrittsöffnung 20 aufliegt, so dass kein Medium aus dem Einströmkanal 7 in den Bypasskanal 10 überströmen kann. [0021] Der einen Stößel bildende Ventilkörper 14 wird von der Kraft einer Ventilfeder 16 in die Schließposition beaufschlagt. Der Fußpunkt der Ventilfeder 16 stützt sich an einer Verschlussschraube 17 ab, die im Ventilgehäuse 15 aufgenommen ist. Das Ventilgehäuse 15 bildet somit einen Sitz für die Verschlussschraube 17, wobei auf der der Abdeckplatte 4 zugewandten Seite zwischen Verschlussschraube 17 und einem Absatz auf der Innenseite des Ventilgehäuses 15 ein Dichtring 18 eingesetzt ist.Also lying in the axial direction, a channel inlet opening 19 are provided in the transition between the inlet channel 7 and the heat exchanger element 5 and a bypass inlet opening 20, via which the introduced via the inlet channel 7 medium is to be introduced into the bypass channel 10. The valve body 14 closes in its closed position, the bypass inlet opening 20. For this, the valve body 14 is formed like a stem, wherein the widened Stempelfuß rests in the closed position on the bypass inlet opening 20, so that no medium from the inflow passage 7 can flow into the bypass passage 10. The valve body 14 forming a plunger is acted upon by the force of a valve spring 16 in the closed position. The base of the valve spring 16 is supported on a screw plug 17 which is received in the valve housing 15. The valve housing 15 thus forms a seat for the screw plug 17, wherein on the cover plate 4 side facing between the screw plug 17 and a shoulder on the inside of the valve housing 15, a sealing ring 18 is inserted.
[0022] Zur Freigabe der Bypasseintrittsöffnung muss der Ventilkörper 14 gegen die Kraft der Ventilfeder 16 aus der Schließposition angehoben werden. In der angehobenen Position ist die Bypasseintrittsöffnung 20 freigegeben und das Medium kann in den Bypasskanal 10 einströmen.To release the bypass inlet opening of the valve body 14 must be raised against the force of the valve spring 16 from the closed position. In the raised position, the bypass entry opening 20 is released and the medium can flow into the bypass channel 10.
[0023] Das Bypassventil 12 mit dem Ventilkörper 14, dem Ventilgehäuse 15, der Ventilfeder 16, der Verschlussschraube 17 und dem Dichtring 18 wird vormontiert und auf das Gehäuse des Kühlers aufgeschraubt.The bypass valve 12 with the valve body 14, the valve housing 15, the valve spring 16, the screw plug 17 and the sealing ring 18 is pre-assembled and screwed onto the housing of the radiator.
[0024] In Fig. 3 ist ein weiteres Ausführungsbeispiel für einen Wärmetauscher 1 dargestellt. Die Abdeckplatte 4 ist im Unterschied zum vorhergehenden Ausführungsbeispiel mit einer erhaben ausgeführten Sicke 22 ausgebildet, die Raum schafft für den auf der Innenseite der Abdeckplatte 24 verlaufenden Bypasskanal 10. Zu erkennen ist in Fig. 3 auch die Kanalaustrittsöffnung 23 sowie die hierzu koaxial liegende Bypassaustrittsöffnung 23a, über die das Fluid jeweils in den Abströmkanal im Gehäuse geleitet wird. [0025] In Fig. 4 ist die Sicke 22 in Draufsicht dargestellt, die in die Abdeckplatte 4 eingebracht ist. Die Breite der Sicke ist auf die Breite des darunter liegenden Bypasskanals beschränkt.In Fig. 3, another embodiment of a heat exchanger 1 is shown. The cover plate 4 is formed in contrast to the previous embodiment with a raised sipe 22, which creates space for the running on the inside of the cover plate 24 bypass channel 10. It can be seen in Fig. 3, the channel outlet opening 23 and the coaxial for this lying bypass outlet opening 23a , via which the fluid is passed in each case into the outflow channel in the housing. 4, the bead 22 is shown in plan view, which is introduced into the cover plate 4. The width of the bead is limited to the width of the underlying bypass channel.
[0026] Den Bypasskanal durch die Sicke in der Abeckplatte zu bilden hat den Vorteil einer einfachen und kostengünstigen Ausführung. Es ist keine zusätzliche Umlenkplatte erforderlich. To form the bypass channel through the bead in the top plate has the advantage of a simple and inexpensive design. There is no additional baffle required.

Claims

Ansprüche claims
1. Wärmetauscher, insbesondere Ölkühler, mit in einem Gehäuse (2) angeordneten Kühlungskanälen (9) für das zu kühlende Medium und einem Bypass- kanal (10), der von einem Bypassventil (12) zu verschließen ist, dessen Ventilkörper (14) zwischen einer Schließposition und einer Öffnungsposition verstellbar ist, dadurch gekennzeichnet, dass der Ventilkörper (14) des Bypass- ventils (12) in der Schließstellung durch eine Öffnung (21) im Gehäuse (2) geführt ist und in Querrichtung in den Bypasskanal (10) einragt, wobei der Ventilkörper (14) in der Öffnungsstellung zumindest teilweise aus dem Bypasskanal (10) zur Freigabe der Bypassströmung herausgezogen ist.1. heat exchanger, in particular oil cooler, with in a housing (2) arranged cooling channels (9) for the medium to be cooled and a bypass channel (10) to be closed by a bypass valve (12) whose valve body (14) between a closing position and an opening position is adjustable, characterized in that the valve body (14) of the bypass valve (12) is guided in the closed position through an opening (21) in the housing (2) and protrudes in the transverse direction in the bypass channel (10) , Wherein the valve body (14) in the open position is at least partially pulled out of the bypass channel (10) for releasing the bypass flow.
2. Wärmetauscher nach Anspruch 1 , dadurch gekennzeichnet, dass das Bypassventil (12) auf Abstand zur Bypassaustrittsöffnung (24) angeordnet ist.2. Heat exchanger according to claim 1, characterized in that the bypass valve (12) is arranged at a distance from the bypass outlet opening (24).
3. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Bypasskanal (10) innerhalb des Gehäuses (2) in einen Abströmkanal (11) mündet, in den auch die Kühlungskanäle (9) münden.3. Heat exchanger according to claim 1 or 2, characterized in that the bypass channel (10) within the housing (2) in an outflow channel (11) opens, in which also the cooling channels (9) open.
4. Wärmetauscher nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Eintrittsöffnung (6) für das Medium und die Austrittsöffnung (8) an der gleichen Gehäuseseite angeordnet sind.4. Heat exchanger according to one of claims 1 to 3, characterized in that the inlet opening (6) for the medium and the outlet opening (8) are arranged on the same side of the housing.
5. Wärmetauscher nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Bypassventil (12) axial gegenüberliegend zur Eintrittsöffnung (6) positioniert ist. 5. Heat exchanger according to one of claims 1 to 4, characterized in that the bypass valve (12) axially opposite to the inlet opening (6) is positioned.
6. Wärmetauscher nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Bypasskanal (10) von einer Abdeckplatte (4) begrenzt ist, die eine Gehäuseaußenwand bildet.6. Heat exchanger according to one of claims 1 to 5, characterized in that the bypass channel (10) by a cover plate (4) is limited, which forms a housing outer wall.
7. Wärmetauscher nach Anspruch 6, dadurch gekennzeichnet, dass in die Abdeckplatte (4) eine den Bypasskanal (10) formende Sicke (22) eingebracht ist.7. Heat exchanger according to claim 6, characterized in that in the cover plate (4) has a bypass channel (10) forming bead (22) is introduced.
8. Wärmetauscher nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Bypassventil (12) als separates Bauteil ausgeführt und an das Gehäuse (2) angeflanscht und mit diesem verbunden ist.8. Heat exchanger according to one of claims 1 to 7, characterized in that the bypass valve (12) designed as a separate component and flanged to the housing (2) and connected thereto.
9. Wärmetauscher nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Ventilkörper (14) des Bypassventils (12) in der Schließstellung die Bypasseintrittsöffnung (20) des Bypasskanals (10) verschließt.9. Heat exchanger according to one of claims 1 to 8, characterized in that the valve body (14) of the bypass valve (12) in the closed position, the bypass inlet opening (20) of the bypass passage (10) closes.
10. Wärmetauscher nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass Bypasseintrittsöffnung (20) in eine Trennwand zwischen einem Kühlungskanal (9) und dem Bypasskanal (10) eingebracht ist.10. Heat exchanger according to one of claims 1 to 9, characterized in that bypass inlet opening (20) is introduced into a partition wall between a cooling channel (9) and the bypass channel (10).
11. Wärmetauscher nach Anspruch 10, dadurch gekennzeichnet, dass der Kühlungskanal (9) und der Bypasskanal (10) parallel zueinander verlaufen. 11. Heat exchanger according to claim 10, characterized in that the cooling channel (9) and the bypass channel (10) extend parallel to each other.
PCT/EP2009/054131 2008-04-24 2009-04-07 Heat exchanger, particularly oil cooler WO2009130125A1 (en)

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