EP2553276B1 - Fluid cooling device - Google Patents

Fluid cooling device Download PDF

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Publication number
EP2553276B1
EP2553276B1 EP11711450.4A EP11711450A EP2553276B1 EP 2553276 B1 EP2553276 B1 EP 2553276B1 EP 11711450 A EP11711450 A EP 11711450A EP 2553276 B1 EP2553276 B1 EP 2553276B1
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EP
European Patent Office
Prior art keywords
storage tank
cooling device
fluid cooling
fluid
fill
Prior art date
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Active
Application number
EP11711450.4A
Other languages
German (de)
French (fr)
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EP2553276A1 (en
Inventor
Guiseppe Zeolla
Luca Mariani
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.)
Hydac AG
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Hydac AG
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Publication date
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Publication of EP2553276A1 publication Critical patent/EP2553276A1/en
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Publication of EP2553276B1 publication Critical patent/EP2553276B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/26—Supply reservoir or sump assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/54—Inspection openings or windows
    • B65D25/56—Inspection openings or windows with means for indicating level of contents
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6525—Air heated or cooled [fan, fins, or channels]

Definitions

  • the invention relates to a fluid cooling device as a structural unit with a drive motor that drives a rotatable fan, and with a filling and a level indicator having storage tank from which at least one fluid is conveyed into a hydraulic working circle, wherein in the hydraulic working circuit, the fluid is heated and cooled by a heat exchanger of the assembly, preferably back into the storage tank traceable.
  • Fluid cooling devices as part of compact hydraulic units or as a functional unit for a hydraulic working group are basically known. They regularly consist of a cooling device, consisting of a cooler with fan fan and attached storage tank for a circulating fluid. Such fluid cooling devices are used both stationary and in mobile use in vehicles, especially in commercial vehicles or work machines, where temporarily additional hydraulic working groups can be used.
  • the DE 103 28 177 A1 describes a fluid cooling device as a modular unit with a, a fan blower and a pressure medium pump driving drive motor.
  • a fluid (hydraulic oil) is from a storage tank in a hydraulic working group with at least one consumer promoted.
  • the pressure medium is heated in the same during operation of the hydraulic working group and cooled again via a cooling device before it again enters the said storage tank.
  • the storage tank regularly comprises the fan fan or fan in the manner of a flow guide or in the form of a so-called.
  • NACA ring which on the one hand an improved fan flow and on the other a damping effect of operating noise of the fan blower is effected.
  • the number of components and the assembly costs for the pertinent fluid cooling device are lowered by the structural measures.
  • WO 98 / 42986A1 a fluid cooling device that forms a compact unit, consisting of a motor that drives a fan and a fluid pump.
  • the fluid is heated by flow losses and adiabatic processes and fed to a heat exchanger.
  • the fluid is returned to the oil reservoir.
  • the oil tank is trough-shaped with, the motor and the fluid pump partially reshaping walls formed.
  • the fluid cooling device shown represents a compact solution without pipe connections, so that the structural unit, consisting of filter and pump unit and a cooling unit, can be connected in a space-saving manner with an oil tank without further piping.
  • the fluid cooling devices which are freely available on the market and described here by way of example only, are special solutions specially adapted and developed specifically for specific installation situations on site, which do not permit a diverse spatial arrangement such as a turning unit.
  • Their design, the type and arrangement, in particular of fluid connections and filling openings or level indicators, define a fixed installation situation in their mechanical environment, which is not changeable in this respect.
  • the DE 196 52 706 A1 describes a hydraulic compact unit consisting essentially of a pressure medium tank in the manner of an oil tank, which encloses a cooler with an inner outer wall for cooling pressure medium.
  • the cooler has an electric motor with a motor shaft, which serves both to drive a fan rotor and to drive a hydraulic pump.
  • the compact unit is designed so that it can be placed in two operating positions.
  • the pressure medium container has a level sensor in the form of an electrical sensor which communicates with the oil in the interior of the pressure medium container. The level sensor can be changed at the pressure fluid container in a change of the position of use in its orientation, ie in particular ummontiert be.
  • XP 55004110 shows a hydraulic unit, in which a transparent storage tank is provided, which can be filled via a filling opening from the top.
  • XP 55004114 shows a storage tank in which a filling opening in a corner region, which is adjacent to three sides of the fluid tank, is arranged. In addition, a level indicator is provided, which is arranged away from the filling opening.
  • the invention has the object, while maintaining the advantages of the known solutions to further improve that the fluid cooling device allows different installation directions and yet structurally simple, especially based on their components, such as filling, level indicator and associated fluid connections.
  • the structural unit (fluid cooling device) is designed as a turning unit in which a filling opening, preferably provided with a filter device, and a level indicator are arranged on the storage tank that the unit in at least two assembly directions, according two main axes, ie in a vertical, first mounting direction and in a direction perpendicular thereto arranged, preferably horizontal, second mounting direction, mountable, a constructive measure is created to mount the fluid cooling device in different mounting positions and yet with a minimum number of level indicators and filling, namely preferably only in each case an ad or opening to get along.
  • a single filling opening and with a single level indicator which are designed accordingly to mount the fluid cooling device in at least two mutually different mounting positions on a third component accordingly, without resulting in loss of function.
  • the filling and the level indicator in a corner is provided, in order to allow proper filling of the storage tank with fluid and independent of the installation position of the fluid cooling device, whether in the direction of a vertical main axis or in the direction of this intersecting axis to read the level, is provided, the filling and the level indicator in a corner to arrange the storage tank.
  • the corner region in question is characterized by a flattening of the relevant corner of the storage tank, ie by removing the corner formed by the otherwise three acute running wall surfaces. Instead of said corner a approximately 45 ° all three wall panels concerned cutting wall or corner surface is formed, which allows the arrangement of the filling at the apex of the boundary line of the individual wall surfaces of the storage tank.
  • the Storage tank preferably has a parallelepiped-like shape, each with approximately mutually parallel edges on the individual side surfaces, which are configured in a preferred embodiment in about the same length.
  • the level indicator Adjacent to the filling opening, which may also be equipped with a filter device and a pressure compensation device, the level indicator is provided.
  • the level indicator is preferably formed by a scale which is formed directly and preferably in one piece with the wall of the storage tank.
  • the scale is arranged around a control opening or indicator (sight glass), which is recessed in the wall of the storage tank.
  • the storage tank is preferably a formed in the forming process or blow molding thermoplastic resin tank, so that the scaling in the form of spaced lines in the manufacture of the storage tank can be made with.
  • the scaling can be obtained by a corresponding shaping within the thermoforming or blow mold for storage tank preparation.
  • the walls of the storage tank are made transparent, so that directly the level at the scale used can be read.
  • the storage tank In order to effect a UV radiation shielding for the relevant fluid, it may be expedient to form the storage tank from a milky-cloudy plastic or a non-transparent plastic, so that the level then expediently at a, the control opening occlusive transparent sealing element in the Art a sight glass can be read, in which subsequent wall area again the respective scale is arranged to a level balance between the amount shown in the sight glass and the adjacent scaling.
  • the sealing element need not be transparent when the wall of the storage tank is transparent. If the wall of the storage tank is again not transparent, it is advisable to use a transparent sealing element for the inspection opening in the manner of the sight glass. Also, a partial transparency for the wall of the storage tank may be provided in such a way that just a comparison check between scaling and level height is made possible in the storage tank.
  • the level indicator can be embedded in a recess in the wall contour of the storage tank.
  • the scaling preferably includes a fictitious angle of 90 ° to each other in a corresponding arrangement immediately adjacent to the control opening around.
  • the storage tank serves as a support for the fan wheel together with the drive motor and encloses this preferably in the manner of a frame, so that a filled with fluid box construction is realized around the rotatable fan.
  • the storage tank and its shape can be chosen such that it can serve as a guide for incoming air on the one hand and on the other hand forms a good damping measure for any operating noise of the fan.
  • the storage tank is so far preferably flows through cooling air, wherein the flowed through by the heated fluid heat exchanger may also be an integral part of the storage tank, which preferably surrounds the heat exchanger at least on two opposite sides, thereby fixing it to a box or frame construction of the storage tank.
  • the heat exchanger is integrated into the outer contour of the storage tank such that a total of a cuboid or a parallelepiped-like shape of the fluid cooling device is formed as a unit, which makes do without significant attachments and protrusions for mounting on third components.
  • a pressure relief valve of the fluid cooling device can also be part of the storage tank adjacent to the filling opening and the level indicator. In that regard, the operation of the fluid cooling device by changing the mounting position for safety reasons due to the pressure relief valve would be possible without hesitation.
  • FIG. 1 is a perspective, schematic view of a fluid cooling device 1 for receiving and cooling a fluid which is in a hydraulic working circuit of a utility vehicle (not shown) can be used.
  • the fluid may be a hydraulic oil for a shiftable, hydrostatic or mechanical transmission of the motor vehicle.
  • the fluid cooling device 1 can also be integrated into existing hydraulic drive circuits of drive or machine tools in order to cool corresponding working hydraulic oil.
  • FIGS. 2 and 3 give two possible installation positions of the fluid cooling device 1 again, the mounting position in the Fig. 2 shows a substantially vertical orientation of the fluid cooling device 1 and the orientation after the Fig. 3 a horizontal and so far horizontal arrangement of the fluid cooling device 1.
  • the installation situation as shown in the Fig. 4 and in the horizontal arrangement according to the Fig. 3 would that be in the Fig. 1 and 5 shown fluid cooling device 1 shown tilted about an inclination axis in each case by 90 ° in the image plane or out of the image plane.
  • Essential components of the fluid cooling device 1 are a storage tank 4 describing the shape of the fluid cooling device 1, a drive motor 2, for example in the form of a DC electric motor, and a fan wheel 3 driven by it (see FIG. Fig: 5 ).
  • a storage tank 4 describing the shape of the fluid cooling device 1
  • a drive motor 2 for example in the form of a DC electric motor
  • a fan wheel 3 driven by it see FIG. Fig: 5 .
  • free side surfaces serve the overall shape of the fluid cooling device 1 defined by a cuboid shape of the storage tank 4.
  • Fig. 1 shows further a front view of the fluid cooling device 1, wherein the fluid in a rotary blow molding of a preferably formed of polyethylene plastic reservoir tank 4 provides a substantially rectangular front view of the viewer.
  • the web-like extend to the edge of the fan opening 16 can serve as a kind of rectifier for smoothing the cooling air flow and stiffen so the respective cover grille 18 for the fan 3.
  • the cooling air through the fan opening 16 also be provided inversely, in particular if certain installation situations of the fluid cooling device 1 should require this. If necessary, an inverse flow air reversal can also be achieved by an inverse direction of rotation of the vanes during fan operation.
  • the storage tank 4 has a conical, tapered shape in the manner of an inlet funnel to the closed by the grille 18 fan opening 16, so that there are low inlet losses for the fan and insofar as a favorable flow of the cooling air through the storage tank 4 results.
  • the storage tank 4 on its right side wall on a chamfer 29, which is a custom feature and may result, inter alia, from the respective installation situation for the fluid cooling device 1.
  • the storage tank 4 At the lower right side looking towards the Fig. 1 seen is located at the front of the fan opening 16 around different connecting pieces 19 for a leakage oil supply from the hydraulic working circuit, not shown.
  • horizontally and vertically guided U-shaped grooves present that can facilitate the positive fixing to a stand or chassis parts of a vehicle body and otherwise stiffen the container construction. This also results in correspondingly large, mutually separated contact surfaces for setting the supply tank 4 to third-party components.
  • the blower air flow is centered on the in Fig. 5 horizontally extending cooling fins 20 of a heat exchanger 5 directed.
  • the cooling fins 20 extend in the same distance from each other from a box-shaped inlet distribution channel 21 to a box-like drain channel 22, the cooled fluid is discharged back into the interior of the storage tank 4.
  • the channels 21,22 are arranged perpendicular to the cooling fins 20, wherein the entire heat exchanger 5 may be formed both as a casting and in sheet metal construction with solder or welded joints.
  • the heat exchanger 5 has a pressure relief valve 14, which is installed on an upper side of the inlet distribution channel 21 and in the region of an upper side wall 10 "(see. Fig. 1 ) of the storage tank 4 opens.
  • a filling opening 6 at the upper left corner region 8 in the direction of the Fig. 1 Seen on the fluid cooling device 1, which consists of a filler neck 23 with a External thread exists, on which a closure lid 24 is screwed with knurling.
  • Said corner region is defined by a wall surface 9, which is triangular in plan view and connects the side walls 10, 10 ', 10 "of the storage tank 4.
  • a filter element not shown in detail can be integrated in the usual way.
  • the wall surface 9 is formed integrally with the remaining walls of the storage tank 4.
  • a level indicator 7 on the in the Fig. 1 consists of a circular level control opening 13 in the manner of a sight glass and two scales 11, 11 ', which occupy a right angle to each other ..
  • the respective scale 11, 11' can from a single-stroke display according to the presented embodiment, which gives the viewer an indication of the desired maximum or minimum volume level in the storage tank 4, or consist of a multi-line arrangement that allows a statement about which defined amount is received in the storage tank 4.
  • the one scaling 11 is arranged parallel to the mounting direction X and the further scaling 11 'parallel to the mounting direction Y.
  • the intersection point S of the two scaling regions 11, 11 ' forms the center of the fill level control opening 13.
  • the fill level control opening 13 (sight glass) is spaced from the fill opening 6 by about 1/8 to 1/5 of the total length or the total width of the storage tank 4 ,
  • the respective position of the control opening 13 in conjunction with the respective scaling 11, 11 ' is dependent on which filling level for the respective storage tank 4 is predetermined by the user.
  • a sealing element 12 in the form of a clipped plastic cap closes the level control opening 13 and the sealing element is transparent in the embodiment shown formed so that the fluid level is also readable on the sealing element 12 accordingly.
  • the heat exchanger 5 is arranged off-center with its pressure relief valve 14 to the storage tank 4 and seen in relation to all side walls of the storage tank 4 integrated approximately flush in the cuboid overall shape of the tank 4.
  • Diederippen 20 (s. Fig. 5 ) have rectangular, strip-like Grundrißgestalt with constant width and thickness over its entire length.
  • the heat exchanger 5 is constructed as an independent component in a modular manner and can be fluidly connected via plug connections without piping to the storage tank 4. This results in a very quick and easy total assembly option.
  • Fig. 5 in a rear view of the heat exchanger 5, this is connected on its inlet distribution channel side 21 with screws on two tabs 25 to the storage tank 4.
  • An equally positive, detachable connection of the heat exchanger 5 may be additionally provided on its inlet distribution channel side 21, so that overall results in a simple assembly and a surface connection of the heat exchanger 5 with the storage tank 4.
  • the storage tank 4 can be designed with its components due to its production as a plastic part in blow molding or rotational molding process to the effect that not only mechanical and hydraulic connection options are provided, but also cable guides for connection cable of the electric drive motor 2. So in the Fig. 1 to 3 a gap 26 is provided for cable management, which is approximately in the middle of an adjacent to the grid 18 for the fan 3 edge of the side wall Through the gap 26, the power supply for the drive motor 2 in the aforementioned manner can be performed.
  • the Fig. 6 again shows a view of the underside of the fluid cooling device 1 in addition to the side from which the fluid is removed from the storage tank 4.
  • a removal opening 28 is arranged at a further corner region 27 of the tank 4, which can have a corresponding fluid coupling.
  • the removal opening 28 is similar to the wall surface 9 provided in the overlapping region of three side surfaces of the storage tank 4 and the wall surface 9 is arranged diagonally opposite the storage tank 4. Due to the position of the removal opening 28, it is possible that in both provided mounting positions of the fluid cooling device 1, the removal opening 28 comes to rest at the lowest point of the storage tank 4.
  • a view of the return pipe 15 for fluid which is guided from the hydraulic working circuit back to the heat exchanger 5 shown.
  • the pertinent return pipe 15 is so far on the underside of the box-shaped inlet distribution channel 21st

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)

Description

Die Erfindung betrifft eine Fluidkühlvorrichtung als Baueinheit mit einem Antriebsmotor, der ein drehbares Lüfterrad antreibt, und mit einem eine Befüllöffnung sowie eine Füllstandsanzeige aufweisenden Vorratstank, aus dem zumindest ein Fluid in einen hydraulischen Arbeitskreis förderbar ist, wobei in dem hydraulischen Arbeitskreis das Fluid erwärmt wird und über einen Wärmetauscher der Baueinheit gekühlt, vorzugsweise wieder in den Vorratstank rückführbar ist.The invention relates to a fluid cooling device as a structural unit with a drive motor that drives a rotatable fan, and with a filling and a level indicator having storage tank from which at least one fluid is conveyed into a hydraulic working circle, wherein in the hydraulic working circuit, the fluid is heated and cooled by a heat exchanger of the assembly, preferably back into the storage tank traceable.

Fluidkühlvorrichtungen als Teil kompakter Hydraulikaggregate oder als Funktionseinheit für einen hydraulischen Arbeitskreis sind grundsätzlich bekannt. Sie bestehen regelmäßig aus einer Kühlvorrichtung, bestehend aus einem Kühler mit Lüftergebläse und daran angebrachtem Vorratstank für ein im Umlauf befindliches Fluid. Derartige Fluidkühlvorrichtungen werden sowohl stationär als auch in mobiler Anwendung in Fahrzeugen, insbesondere in Nutzkraftwagen oder Arbeitsmaschinen, eingesetzt, bei denen temporär zusätzliche hydraulische Arbeitskreise benutzt werden können.Fluid cooling devices as part of compact hydraulic units or as a functional unit for a hydraulic working group are basically known. They regularly consist of a cooling device, consisting of a cooler with fan fan and attached storage tank for a circulating fluid. Such fluid cooling devices are used both stationary and in mobile use in vehicles, especially in commercial vehicles or work machines, where temporarily additional hydraulic working groups can be used.

Die DE 103 28 177 A1 beschreibt eine Fluidkühlvorrichtung als modulare Baueinheit mit einem, ein Lüftergebläse und eine Druckmittelpumpe antreibenden Antriebsmotor. Ein Fluid (Hydrauliköl) wird dabei aus einem Vorratstank in einen hydraulischen Arbeitskreis mit mindestens einem Verbraucher gefördert. Das Druckmittel wird in dem hydraulischen Arbeitskreis im Betrieb desselben erwärmt und über eine Kühlvorrichtung wieder abgekühlt, bevor es erneut in den genannten Vorratstank gelangt. Der Vorratstank umfaßt regelmäßig das Lüftergebläse oder Lüfterrad in der Art einer Strömungsleiteinrichtung oder in Form eines sog. NACA-Ringes, wodurch zum einen eine verbesserte Gebläseströmung und zum anderen eine Dämpfungswirkung von Betriebsgeräuschen des Lüftergebläses bewirkt ist. Zudem sind durch die konstruktiven Maßnahmen die Bauteilezahl und der Montageaufwand für die dahingehende Fluidkühlvorrichtung gesenkt.The DE 103 28 177 A1 describes a fluid cooling device as a modular unit with a, a fan blower and a pressure medium pump driving drive motor. A fluid (hydraulic oil) is from a storage tank in a hydraulic working group with at least one consumer promoted. The pressure medium is heated in the same during operation of the hydraulic working group and cooled again via a cooling device before it again enters the said storage tank. The storage tank regularly comprises the fan fan or fan in the manner of a flow guide or in the form of a so-called. NACA ring, which on the one hand an improved fan flow and on the other a damping effect of operating noise of the fan blower is effected. In addition, the number of components and the assembly costs for the pertinent fluid cooling device are lowered by the structural measures.

Ferner beschreibt die WO 98/42986A1 eine Fluidkühlvorrichtung, die eine kompakte Baueinheit bildet, bestehend aus einem Motor, der ein Lüfterrad und eine Fluidpumpe antreibt. In dem hydraulischen Arbeitskreis wird wiederum das Fluid durch Strömungsverluste und adiabatische Prozesse erwärmt und zu einem Wärmetauscher geführt. Aus der Fluidkühlvorrichtung wird das Fluid wieder in den Ölbehälter rückgeführt. Der Ölbehälter ist wannenförmig mit, den Motor und die Fluidpumpe teilweise umformenden Wänden ausgebildet. Die gezeigte Fluidkühlvorrichtung stellt eine kompakte, ohne Rohrverbindungen auskommende Lösung dar, so dass die Baueinheit, bestehend aus Filter- und Pumpeneinheit sowie einer Kühleinheit, ohne weitere Verrohrung platzsparend mit einem Ölbehälter verbindbar ist.Furthermore, the describes WO 98 / 42986A1 a fluid cooling device that forms a compact unit, consisting of a motor that drives a fan and a fluid pump. In the hydraulic working circuit, in turn, the fluid is heated by flow losses and adiabatic processes and fed to a heat exchanger. From the fluid cooling device, the fluid is returned to the oil reservoir. The oil tank is trough-shaped with, the motor and the fluid pump partially reshaping walls formed. The fluid cooling device shown represents a compact solution without pipe connections, so that the structural unit, consisting of filter and pump unit and a cooling unit, can be connected in a space-saving manner with an oil tank without further piping.

Allerdings handelt es sich bei den frei auf dem Markt erhältlichen und hier lediglich beispielhaft beschriebenen Fluidkühlvorrichtungen um relativ speziell an bestimmte Einbausituationen vor Ort angepaßte und entwickelte Speziallösungen, die schon etwa eine verschiedenartige räumliche Anordnung etwa als Wendeaggregat nicht zulassen. Ihre Konzeption, die Art und Anordnung, insbesondere von Fluidanschlüssen und Befüllöffnungen oder Füllstandsanzeigen, definieren eine feste Einbausituation in ihrer maschinentechnischen Umgebung, die insoweit nicht veränderbar ist.However, the fluid cooling devices which are freely available on the market and described here by way of example only, are special solutions specially adapted and developed specifically for specific installation situations on site, which do not permit a diverse spatial arrangement such as a turning unit. Their design, the type and arrangement, in particular of fluid connections and filling openings or level indicators, define a fixed installation situation in their mechanical environment, which is not changeable in this respect.

Die DE 196 52 706 A1 beschreibt ein hydraulisches Kompaktaggregat bestehend im Wesentlichen aus einem Druckmittelbehälter in der Art eines Ölbehälters, der mit einer inneren Außenwand einen Kühler zur Kühlung von Druckmittel umschließt. Der Kühler weist einen Elektromotor mit einer Motorwelle auf, die sowohl zum Antrieb eines Lüfterrotors als auch zum Antrieb einer Hydropumpe dient. Das Kompaktaggregat ist so aufgebaut, dass es in zwei Gebrauchslagen aufgestellt werden kann. Der Druckmittelbehälter weist einen Niveaugeber in Form eines elektrischen Sensors auf, der mit dem Öl im Inneren des Druckmittelbehälters kommuniziert. Der Niveaugeber kann an dem Druckmittelbehälter bei einem Wechsel der Gebrauchslage in seiner Ausrichtung geändert, d.h. insbesondere ummontiert, werden.The DE 196 52 706 A1 describes a hydraulic compact unit consisting essentially of a pressure medium tank in the manner of an oil tank, which encloses a cooler with an inner outer wall for cooling pressure medium. The cooler has an electric motor with a motor shaft, which serves both to drive a fan rotor and to drive a hydraulic pump. The compact unit is designed so that it can be placed in two operating positions. The pressure medium container has a level sensor in the form of an electrical sensor which communicates with the oil in the interior of the pressure medium container. The level sensor can be changed at the pressure fluid container in a change of the position of use in its orientation, ie in particular ummontiert be.

Aus dem Dokument von Bucher Hydraulics "Hydraulic Units UP100-S309 Version", XP 55004110 , geht eine Hydraulikeinheit hervor, bei der ein transparenter Vorratstank vorgesehen ist, der über eine Befüllöffnung von der Oberseite her befüllbar ist.From the document of Bucher Hydraulics "Hydraulic Units UP100-S309 Version", XP 55004110 shows a hydraulic unit, in which a transparent storage tank is provided, which can be filled via a filling opening from the top.

Der Katalog der Firma HAWE Hydraulik mit dem Titel "Compact hydraulic power packs type HC and HCW", XP 55004114 , zeigt einen Vorratstank auf, bei dem eine Befüllöffnung in einem Eckbereich, der an drei Seiten des Fluidtanks angrenzt, angeordnet ist. Darüber hinaus ist eine Füllstandsanzeige vorgesehen, die entfernt von der Befüllöffnung angeordnet ist.The catalog of Company HAWE Hydraulik with the title "Compact hydraulic power packs type HC and HCW", XP 55004114 shows a storage tank in which a filling opening in a corner region, which is adjacent to three sides of the fluid tank, is arranged. In addition, a level indicator is provided, which is arranged away from the filling opening.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, unter Beibehalten der Vorteile der bekannten Lösungen diese dahingehend weiter zu verbessern, dass die Fluidkühlvorrichtung verschiedenartige Einbaurichtungen ermöglicht und dennoch konstruktiv einfach aufbaut, insbesondere bezogen auf deren Komponenten, wie Befüllöffnung, Füllstandsanzeige und zugehörigen Fluidanschlüsse.Based on this prior art, the invention has the object, while maintaining the advantages of the known solutions to further improve that the fluid cooling device allows different installation directions and yet structurally simple, especially based on their components, such as filling, level indicator and associated fluid connections.

Eine dahingehende Aufgabe löst eine Fluidkühlvorrichtung mit den Merkmalen des Patentanspruches 1 in seiner Gesamtheit.This object is achieved by a fluid cooling device having the features of claim 1 in its entirety.

Dadurch, dass gemäß dem kennzeichnenden Teil des Patentanspruches 1 die Baueinheit (Fluidkühlvorrichtung) als Wendeaggregat ausgeführt ist, bei dem eine Befüllöffnung, vorzugsweise mit einer Filtereinrichtung versehen, und eine Füllstandsanzeige derart an dem Vorratstank angeordnet sind, dass die Baueinheit in zumindest zwei Montagerichtungen, gemäß zweier Hauptachsen, d.h. in einer vertikalen, ersten Montagerichtung und in einer rechtwinklig dazu angeordneten, vorzugsweise horizontalen, zweiten Montagerichtung, montierbar ist, ist eine konstruktive Maßnahme geschaffen, die Fluidkühlvorrichtung in verschiedenen Einbaulagen zu montieren und dennoch mit einer Mindestzahl an Füllstandsanzeigen und Befüllöffnungen, nämlich vorzugsweise mit jeweils nur einer Anzeige bzw. Öffnung, auszukommen. Bevorzugt ist also vorgesehen, mit einer einzigen Befüllöffnung und mit einer einzigen Füllstandsanzeige, die entsprechend ausgeführt sind, die Fluidkühlvorrichtung in zumindest zwei voneinander verschiedenen Einbaulagen an einem Drittbauteil entsprechend zu montieren, ohne dass es zu Funktionseinbußen kommt.Characterized in that according to the characterizing part of claim 1, the structural unit (fluid cooling device) is designed as a turning unit in which a filling opening, preferably provided with a filter device, and a level indicator are arranged on the storage tank that the unit in at least two assembly directions, according two main axes, ie in a vertical, first mounting direction and in a direction perpendicular thereto arranged, preferably horizontal, second mounting direction, mountable, a constructive measure is created to mount the fluid cooling device in different mounting positions and yet with a minimum number of level indicators and filling, namely preferably only in each case an ad or opening to get along. Preferably, therefore, it is provided with a single filling opening and with a single level indicator, which are designed accordingly to mount the fluid cooling device in at least two mutually different mounting positions on a third component accordingly, without resulting in loss of function.

Um eine einwandfreie Befüllung des Vorratstanks mit Fluid zu ermöglichen und um unabhängig von der Einbaulage der Fluidkühlvorrichtung, ob in Richtung einer vertikalen Hauptachse oder in Richtung einer diese schneidenden Achse, den Füllstand ablesen zu können, ist vorgesehen, die Befüllöffnung und die Füllstandsanzeige in einem Eckbereich des Vorratstanks anzuordnen. Der betreffende Eckbereich zeichnet sich durch eine Abflachung der betreffenden Ecke des Vorratstanks aus, also durch eine Wegnahme der durch die ansonsten drei spitz zueinander laufenden Wandflächen gebildeten Ecke. Anstatt der genannten Ecke wird eine in etwa 45° alle drei betreffenden Wandflächen schneidende Wand oder Eckfläche geformt, die die Anordnung der Befüllöffnung im Scheitelpunkt der Begrenzungsgeraden der einzelnen Wandflächen des Vorratstanks ermöglicht. Der Vorratstank weist dabei bevorzugt eine quaderähnliche Gestalt mit jeweils etwa parallel zueinander verlaufenden Kanten an den einzelnen Seitenflächen auf, die in einer bevorzugten Ausführungsform in etwa gleich lang ausgestaltet sind.In order to allow proper filling of the storage tank with fluid and independent of the installation position of the fluid cooling device, whether in the direction of a vertical main axis or in the direction of this intersecting axis to read the level, is provided, the filling and the level indicator in a corner to arrange the storage tank. The corner region in question is characterized by a flattening of the relevant corner of the storage tank, ie by removing the corner formed by the otherwise three acute running wall surfaces. Instead of said corner a approximately 45 ° all three wall panels concerned cutting wall or corner surface is formed, which allows the arrangement of the filling at the apex of the boundary line of the individual wall surfaces of the storage tank. The Storage tank preferably has a parallelepiped-like shape, each with approximately mutually parallel edges on the individual side surfaces, which are configured in a preferred embodiment in about the same length.

Benachbart zu der Befüllöffnung, die auch mit einer Filtereinrichtung und einer Druckausgleichseinrichtung ausgestattet sein kann, ist die Füllstandsanzeige vorgesehen. Die Füllstandsanzeige ist bevorzugt durch eine Skalierung gebildet, die direkt und vorzugsweise einstückig mit der Wand des Vorratstanks ausgebildet ist. Die Skalierung ist um eine Kontrollöffnung oder Kontrollanzeige (Schauglas) angeordnet, die in der Wand des Vorratstanks ausgespart ist. Der Vorratstank ist bevorzugt ein im Umformverfahren oder Blasformverfahren gebildeter Thermoplast-Kunststofftank, so dass die Skalierung in Form von beabstandeten Strichen bei der Herstellung des Vorratstanks mit vorgenommen werden kann.Adjacent to the filling opening, which may also be equipped with a filter device and a pressure compensation device, the level indicator is provided. The level indicator is preferably formed by a scale which is formed directly and preferably in one piece with the wall of the storage tank. The scale is arranged around a control opening or indicator (sight glass), which is recessed in the wall of the storage tank. The storage tank is preferably a formed in the forming process or blow molding thermoplastic resin tank, so that the scaling in the form of spaced lines in the manufacture of the storage tank can be made with.

Anstelle von beabstandeten Strichen kann aber auch nur immer jeweils ein einzelner Füllstandsstrich angegeben sein, der beispielsweise eine maximale oder minimale Füllstandshöhe im Vorratstank wiedergibt, wobei die Skalierung oder die Einzelstrichangabe einen rechten Winkel mit der zugehörigen zweiten Skalierung bzw. der zweiten Einzelstrichangabe einschließt. Ansonsten läßt sich die Skalierung durch eine entsprechende Formgebung innerhalb der Tiefzieh- oder Blasform zur Vorratstankerstellung erhalten. Bevorzugt sind die Wände des Vorratstanks transparent ausgeführt, so dass unmittelbar der Füllstand an der eingesetzten Skalierung ablesbar ist. Um eine UV-Strahlungsabschirmung für das betreffende Fluid zu bewirken, kann es zweckmäßig sein, den Vorratstank aus einem milchig-trüben Kunststoff oder einem nicht transparenten Kunststoff zu bilden, so dass der Füllstand dann zweckmäßig an einem, die Kontrollöffnung verschließenden transparenten Dichtelement in der Art eines Schauglases mit abgelesen werden kann, in dessen sich anschließendem Wandbereich wieder die jeweilige Skalierung angeordnet ist, um einen Füllstandsabgleich zwischen der im Schauglas gezeigten Menge und der benachbarten Skalierung vornehmen zu können.Instead of spaced strokes, however, only one individual fill line bar can always be indicated, which reproduces, for example, a maximum or minimum filling level in the storage tank, wherein the scale or the individual line indication includes a right angle with the associated second scale or the second single line indication. Otherwise, the scaling can be obtained by a corresponding shaping within the thermoforming or blow mold for storage tank preparation. Preferably, the walls of the storage tank are made transparent, so that directly the level at the scale used can be read. In order to effect a UV radiation shielding for the relevant fluid, it may be expedient to form the storage tank from a milky-cloudy plastic or a non-transparent plastic, so that the level then expediently at a, the control opening occlusive transparent sealing element in the Art a sight glass can be read, in which subsequent wall area again the respective scale is arranged to a level balance between the amount shown in the sight glass and the adjacent scaling.

Bei einer bevorzugten Ausführungsform braucht das Dichtelement nicht transparent ausgebildet zu sein, wenn die Wandung des Vorratstanks transparent ist. Ist die Wandung des Vorratstanks wiederum nicht transparent, so empfiehlt sich, ein transparentes Dichtelement für die Kontrollöffnung in der Art des Schauglases zu verwenden. Auch kann eine Teiltransparenz für die Wandung des Vorratstanks vorgesehen sein in der Art, dass eben noch eine Abgleichsüberprüfung zwischen Skalierung und Füllstandshöhe im Vorratstank ermöglicht ist.In a preferred embodiment, the sealing element need not be transparent when the wall of the storage tank is transparent. If the wall of the storage tank is again not transparent, it is advisable to use a transparent sealing element for the inspection opening in the manner of the sight glass. Also, a partial transparency for the wall of the storage tank may be provided in such a way that just a comparison check between scaling and level height is made possible in the storage tank.

Um einen Schutz vor Beschädigungen zu erreichen, kann die Füllstandsanzeige in einer Vertiefung der Wandkontur des Vorratstanks eingelassen sein. Die Skalierung schließt vorzugsweise einen fiktiven Winkel von 90° zueinander ein und zwar in entsprechender Anordnung unmittelbar benachbart um die Kontrollöffnung herum.To achieve protection against damage, the level indicator can be embedded in a recess in the wall contour of the storage tank. The scaling preferably includes a fictitious angle of 90 ° to each other in a corresponding arrangement immediately adjacent to the control opening around.

Der Vorratstank dient als Träger für das Lüfterrad nebst Antriebsmotor und umschließt dieses bevorzugt in der Art eines Rahmens, so dass ein mit Fluid befüllter Kastenaufbau um das drehbare Lüfterrad realisiert ist. Der Vorratstank und dessen Gestalt kann derart gewählt sein, dass dieser zum einen als Leiteinrichtung für zuströmende Luft dienen kann und zum anderen eine gute Dämpfungsmaßnahme für etwaige Betriebsgeräusche des Lüfterrades bildet. Der Vorratstank ist insoweit vorzugsweise von Kühlluft durchströmt, wobei der von dem erwärmten Fluid durchströmte Wärmetauscher ebenso integraler Bestandteil des Vorratstanks sein kann, wobei dieser bevorzugt den Wärmetauscher zumindest an zwei gegenüberliegenden Seiten umgreift und ihn dabei an einer Kasten- oder Rahmenkonstruktion des Vorratstanks festlegt.The storage tank serves as a support for the fan wheel together with the drive motor and encloses this preferably in the manner of a frame, so that a filled with fluid box construction is realized around the rotatable fan. The storage tank and its shape can be chosen such that it can serve as a guide for incoming air on the one hand and on the other hand forms a good damping measure for any operating noise of the fan. The storage tank is so far preferably flows through cooling air, wherein the flowed through by the heated fluid heat exchanger may also be an integral part of the storage tank, which preferably surrounds the heat exchanger at least on two opposite sides, thereby fixing it to a box or frame construction of the storage tank.

In vorteilhafter Weise ist der Wärmetauscher derart in die Außenkontur des Vorratstanks integriert, dass insgesamt ein Quader oder eine quaderähnliche Gestalt der Fluidkühlvorrichtung als Baueinheit entsteht, die insoweit ohne nennenswerte Anbauteile und Vorsprünge für eine Montage an Drittbauteilen auskommt.Advantageously, the heat exchanger is integrated into the outer contour of the storage tank such that a total of a cuboid or a parallelepiped-like shape of the fluid cooling device is formed as a unit, which makes do without significant attachments and protrusions for mounting on third components.

Ein Überdruckventil der Fluidkühlvorrichtung kann dabei benachbart zu der Befüllöffnung und der Füllstandsanzeige gleichfalls Bestandteil des Vorratstanks sein. Insoweit wäre auch der Betrieb der Fluidkühlvorrichtung durch einen Wechsel der Einbaulage aus sicherheitstechnischen Überlegungen heraus aufgrund des Überdruckventils bedenkenlos möglich.A pressure relief valve of the fluid cooling device can also be part of the storage tank adjacent to the filling opening and the level indicator. In that regard, the operation of the fluid cooling device by changing the mounting position for safety reasons due to the pressure relief valve would be possible without hesitation.

Es kann weiter vorteilhaft sein, zur Anpassung an technische Vorgaben des hydraulischen Arbeitskreises verschiedene Fluidanschlüsse an dem Vorratstank oder der Fluidkühlvorrichtung umsteckbar zu gestalten. Dies begünstigt wiederum den gesamt modularen Aufbau der Fluidkühlvorrichtung mit ihren Komponenten.It may also be advantageous to make different fluid connections to the storage tank or the fluid cooling device to adapt to technical specifications of the hydraulic working group umsteckbar. This in turn favors the overall modular design of the fluid cooling device with its components.

Im Folgenden wird die erfindungsgemäße Fluidkühlvorrichtung anhand eines Ausführungsbeispiels nach der Zeichnung näher erläutert. Dabei zeigen in prinzipieller und nicht maßstäblicher Darstellung die

Fig. 1
eine perspektivische Ansicht einer erfindungsgemäßen Fluidkühlvorrichtung;
Fig. 2
eine Ansicht der Fluidkühlvorrichtung nach der Fig. 1 in vertikaler Montagerichtung;
Fig. 3
eine Ansicht der Fluidkühlvorrichtung nach der Fig. 1 in horizontaler Montagerichtung, indem die Fluidkühlvorrichtung in Blickrichtung auf die Fig. 1 um einen Schwenkwinkel von 90° im Uhrzeigersinn geschwenkt ist;
Fig. 4
eine perspektivische Ansicht eines Einbaubeispiels der Fluidkühlvorrichtung in einem Fahrzeugrahmen in vertikaler Montagerichtung;
Fig. 5
eine Rückseitenansicht der Fluidkühlvorrichtung mit Ansicht eines Wärmetauschers in der Art eines Lamellenkühlers, der in dem Vorratstank der Fluidkühlvorrichtung integriert ist; und
Fig. 6
eine Ansicht der Unter- oder Bodenseite der Fluidkühlvorrichtung von unten her gesehen.
In the following, the fluid cooling device according to the invention will be explained in more detail using an exemplary embodiment according to the drawing. This show in principle and not to scale representation of the
Fig. 1
a perspective view of a fluid cooling device according to the invention;
Fig. 2
a view of the fluid cooling device according to the Fig. 1 in vertical mounting direction;
Fig. 3
a view of the fluid cooling device according to the Fig. 1 in a horizontal mounting direction, by the fluid cooling device in the direction of the Fig. 1 is pivoted by a pivoting angle of 90 ° in a clockwise direction;
Fig. 4
a perspective view of an installation example of the fluid cooling device in a vehicle frame in the vertical mounting direction;
Fig. 5
a rear view of the fluid cooling device with view of a heat exchanger in the manner of a finned cooler, which is integrated in the storage tank of the fluid cooling device; and
Fig. 6
a view of the bottom or bottom side of the fluid cooling device seen from below.

In der Fig. 1 ist in einer perspektivischen, schematischen Ansicht eine Fluidkühlvorrichtung 1 zur Aufnahme und Kühlung eines Fluids, das in einen hydraulischen Arbeitskreis eines Nutzkraftwagens (nicht dargestellt) einsetzbar ist, gezeigt. Das Fluid kann ein Hydrauliköl für ein zuschaltbares, hydrostatisches oder mechanisches Getriebe des Kraftwagens sein. Die Fluidkühlvorrichtung 1 läßt sich auch in bestehende hydraulische Antriebskreise von Antriebs- oder Werkzeugmaschinen integrieren, um entsprechendes Arbeits-Hydrauliköl zu kühlen.In the Fig. 1 is a perspective, schematic view of a fluid cooling device 1 for receiving and cooling a fluid which is in a hydraulic working circuit of a utility vehicle (not shown) can be used. The fluid may be a hydraulic oil for a shiftable, hydrostatic or mechanical transmission of the motor vehicle. The fluid cooling device 1 can also be integrated into existing hydraulic drive circuits of drive or machine tools in order to cool corresponding working hydraulic oil.

Die Darstellungen in den Fig. 2 und 3 geben zwei mögliche Einbaulagen der Fluidkühlvorrichtung 1 wieder, wobei die Einbaulage in der Fig. 2 eine im wesentlichen vertikale Ausrichtung der Fluidkühlvorrichtung 1 zeigt und die Ausrichtung nach der Fig. 3 eine liegende und insoweit horizontale Anordnung der Fluidkühlvorrichtung 1. Insoweit entspricht die vertikale Einbaugestaltung nach der Fig. 2 der Einbausituation gemäß der Darstellung nach der Fig. 4 und bei der horizontalen Anordnung nach der Fig. 3 wäre die in den Fig. 1 und 5 gezeigte Fluidkühlvorrichtung 1 um eine Neigungsachse jeweils um 90° in die Bildebene hinein bzw. aus der Bildebene heraus gekippt dargestellt.The representations in the FIGS. 2 and 3 give two possible installation positions of the fluid cooling device 1 again, the mounting position in the Fig. 2 shows a substantially vertical orientation of the fluid cooling device 1 and the orientation after the Fig. 3 a horizontal and so far horizontal arrangement of the fluid cooling device 1. In this respect corresponds to the vertical installation design according to the Fig. 2 the installation situation as shown in the Fig. 4 and in the horizontal arrangement according to the Fig. 3 would that be in the Fig. 1 and 5 shown fluid cooling device 1 shown tilted about an inclination axis in each case by 90 ° in the image plane or out of the image plane.

Wesentliche Komponenten der Fluidkühlvorrichtung 1 sind ein die Gestalt der Fluidkühlvorrichtung 1 beschreibender Vorratstank 4, ein Antriebsmotor 2, beispielsweise in Form eines Gleichstrom-Elektromotors, und ein von diesem angetriebenes Lüfterrad 3 (s. Fig:5). Zur Festlegung der Fluidkühlvorrichtung 1 dienen freie Seitenflächen der insgesamt durch eine quaderförmige Gestalt des Vorratstanks 4 definierten Gestalt der Fluidkühlvorrichtung 1.Essential components of the fluid cooling device 1 are a storage tank 4 describing the shape of the fluid cooling device 1, a drive motor 2, for example in the form of a DC electric motor, and a fan wheel 3 driven by it (see FIG. Fig: 5 ). To define the fluid cooling device 1, free side surfaces serve the overall shape of the fluid cooling device 1 defined by a cuboid shape of the storage tank 4.

Fig. 1 zeigt des Weiteren eine Frontansicht der Fluidkühlvorrichtung 1, wobei der in einem Rotations-Blasformverfahren aus einem bevorzugt aus Polyethylen-Kunststoff gebildete Vorratstank 4 für Fluid eine im wesentlichen rechteckförmige Frontansicht dem Betrachter bietet. Der als Nabenmotor in einer kreisrunden Gebläseöffnung 16 etwa im Zentrum des Vorratstanks 4 aufgehängte Antriebsmotor 2, der ein fünfflügeliges Lüfterrad 3 antreibt, erzeugt im Betrieb einen Kühlluftstrom in Blickrichtung auf die Fig. 1, 4 und 5 in paralleler Richtung durch die Gebläseöffnung 16 hindurch. Fig. 1 shows further a front view of the fluid cooling device 1, wherein the fluid in a rotary blow molding of a preferably formed of polyethylene plastic reservoir tank 4 provides a substantially rectangular front view of the viewer. The as a hub motor in a circular fan opening 16 approximately in the center of the storage tank 4 suspended drive motor 2, which drives a five-bladed fan 3, generates in operation a cooling air flow in the direction of the Fig. 1 . 4 and 5 in a parallel direction through the fan opening 16 therethrough.

Radial von dem Antriebsmotor 2 abgehende Rippen 17, die stegartig zu dem Rand der Gebläseöffnung 16 hin verlaufen, können als eine Art Gleichrichter zur Glättung des Kühlluftstromes dienen und versteifen derart auch das jeweilige Abdeckgitter 18 für das Lüfterrad 3. In Abhängigkeit der Lüfterradausbildung könnte die Strömungsrichtung der Kühlluft durch die Gebläseöffnung 16 auch invers vorgesehen sein, insbesondere, wenn bestimmte Einbausituationen der Fluidkühlvorrichtung 1 dies erfordern sollten. Eine inverse Strömungsluftumkehr läßt sich gegebenenfalls auch durch eine inverse Drehrichtung der Flügel im Lüfterbetrieb erreichen. Der Vorratstank 4 weist eine konisch, sich verjüngende Gestalt in der Art eines Einlauftrichters auf zu der von dem Abdeckgitter 18 verschlossenen Gebläseöffnung 16, so dass sich geringe Einlaufverluste für das Gebläse ergeben und insoweit ein günstiger Strömungsverlauf der Kühlluft durch den Vorratstank 4 sich ergibt.Radially from the drive motor 2 outgoing ribs 17, the web-like extend to the edge of the fan opening 16, can serve as a kind of rectifier for smoothing the cooling air flow and stiffen so the respective cover grille 18 for the fan 3. Depending on the Lüfterradausbildung could the flow direction the cooling air through the fan opening 16 also be provided inversely, in particular if certain installation situations of the fluid cooling device 1 should require this. If necessary, an inverse flow air reversal can also be achieved by an inverse direction of rotation of the vanes during fan operation. The storage tank 4 has a conical, tapered shape in the manner of an inlet funnel to the closed by the grille 18 fan opening 16, so that there are low inlet losses for the fan and insofar as a favorable flow of the cooling air through the storage tank 4 results.

In Blickrichtung auf die Fig. 1 gesehen weist der Vorratstank 4 an seiner rechten Seitenwand eine Abschrägung 29 auf, die ein kundenspezifisches Gestaltsmerkmal darstellt und sich unter anderem aus der jeweiligen Einbausituation für die Fluidkühlvorrichtung 1 ergeben kann. An der rechten unteren Seite in Blickrichtung auf die Fig. 1 gesehen befindet sich an der um die Gebläseöffnung 16 herumgeführten Frontwand verschiedene Anschlußstutzen 19 für eine Leckageölzufuhr aus dem nicht näher dargestellten hydraulischen Arbeitskreis. Des Weiteren sind verschiedene, in Blickrichtung auf die Fig. 1 gesehen, horizontal und vertikal geführte U-förmige Nuten vorhanden, die die formschlüssige Festlegung an einem Ständer oder an Chassisteilen eines Fahrzeugaufbaus erleichtern können und im Übrigen die Behälterkonstruktion aussteifen. Hieraus ergeben sich auch entsprechend große, voneinander separierte Anlageflächen für das Festlegen des Vorrats-tanks 4 an Drittbauteilen.In the direction of the Fig. 1 Seen, the storage tank 4 on its right side wall on a chamfer 29, which is a custom feature and may result, inter alia, from the respective installation situation for the fluid cooling device 1. At the lower right side looking towards the Fig. 1 seen is located at the front of the fan opening 16 around different connecting pieces 19 for a leakage oil supply from the hydraulic working circuit, not shown. Furthermore, there are different, in the direction of the Fig. 1 seen, horizontally and vertically guided U-shaped grooves present that can facilitate the positive fixing to a stand or chassis parts of a vehicle body and otherwise stiffen the container construction. This also results in correspondingly large, mutually separated contact surfaces for setting the supply tank 4 to third-party components.

Wie die Fig. 5 des Weiteren zeigt, wird der Gebläseluftstrom zentral auf die in Fig. 5 horizontal verlaufenden Kühlrippen 20 eines Wärmetauscher 5 gelenkt. Die Kühlrippen 20 erstrecken sich dabei in gleichem Abstand zueinander von einem kastenförmigen Zulauf-Verteilkanal 21 zu einem ebenso kastenförmigen Ablauf-Kanal 22, der gekühltes Fluid wieder ins Innere des Vorratstanks 4 ableitet. Die Kanäle 21,22 sind senkrecht zu den Kühlrippen 20 angeordnet, wobei der gesamte Wärmetauscher 5 sowohl als Gußteil als auch in Blechbauweise mit Löt- oder Schweißverbindungen ausgebildet sein kann.As the Fig. 5 Furthermore, the blower air flow is centered on the in Fig. 5 horizontally extending cooling fins 20 of a heat exchanger 5 directed. The cooling fins 20 extend in the same distance from each other from a box-shaped inlet distribution channel 21 to a box-like drain channel 22, the cooled fluid is discharged back into the interior of the storage tank 4. The channels 21,22 are arranged perpendicular to the cooling fins 20, wherein the entire heat exchanger 5 may be formed both as a casting and in sheet metal construction with solder or welded joints.

Der Wärmetauscher 5 weist ein Überdruckventil 14 auf, das an einer Oberseite des Zulauf-Verteilkanals 21 eingebaut ist und im Bereich einer oberen Seitenwand 10" (vgl. Fig. 1) des Vorratstanks 4 ausmündet. Um einen Einbau der Fluidkühlvorrichtung 1 in den beiden Montagerichtungen X,Y, die senkrecht zueinander stehen, zu ermöglichen, ist eine Befüllöffnung 6 am oberen linken Eckbereich 8 in Blickrichtung auf die Fig. 1 gesehen an der Fluidkühlvorrichtung 1 angeordnet, die aus einem Einfüllstutzen 23 mit einem Außengewinde besteht, auf das ein Verschlußdeckel 24 mit Rändelung aufgeschraubt ist. Der genannte Eckbereich wird durch eine Wandfläche 9 definiert, die in Draufsicht dreieckförmig ist und die Seitenwände 10, 10', 10" des Vorratstanks 4 miteinander verbindet. Innerhalb des Verschlußdeckels 24 kann ein nicht näher dargestelltes Filterelement in üblicher Weise integriert sein.The heat exchanger 5 has a pressure relief valve 14, which is installed on an upper side of the inlet distribution channel 21 and in the region of an upper side wall 10 "(see. Fig. 1 ) of the storage tank 4 opens. In order to allow installation of the fluid cooling device 1 in the two mounting directions X, Y, which are perpendicular to each other, is a filling opening 6 at the upper left corner region 8 in the direction of the Fig. 1 Seen on the fluid cooling device 1, which consists of a filler neck 23 with a External thread exists, on which a closure lid 24 is screwed with knurling. Said corner region is defined by a wall surface 9, which is triangular in plan view and connects the side walls 10, 10 ', 10 "of the storage tank 4. Within the closure lid 24, a filter element not shown in detail can be integrated in the usual way.

Die Wandfläche 9 ist einstückig mit den übrigen Wänden des Vorratstanks 4 ausgebildet. Benachbart zu der Befüllöffnung 6 ist eine Füllstandsanzeige 7 auf der in der Fig. 1 als Oberseite des Vorratstanks 4 dargestellten Seitenwand 10" angeordnet und besteht zum einen aus einer kreisrunden Füllstands-Kontrollöffnung 13 in der Art eines Schauglases und zwei Skalierungen 11, 11', die einen rechten Winkel zueinander einnehmen. Die jeweilige Skalierung 11, 11' kann aus einer Einzelstrichanzeige gemäß der vorgestellten Ausführungsform bestehen, die dem Betrachter einen Hinweis über den gewünschten Maximal- oder Minimalvolumenstand im Vorratstank 4 gibt, oder aus einer Mehrstrichanordnung bestehen, die eine Aussage darüber erlaubt, welche definierte Menge in dem Vorratstank 4 aufgenommen ist. Bei der Ausführungsform nach den Fig. 2 und 3 ist die eine Skalierung 11 parallel zu der Montagerichtung X angeordnet und die weitere Skalierung 11' parallel zur Montagerichtung Y.The wall surface 9 is formed integrally with the remaining walls of the storage tank 4. Adjacent to the filling opening 6 is a level indicator 7 on the in the Fig. 1 consists of a circular level control opening 13 in the manner of a sight glass and two scales 11, 11 ', which occupy a right angle to each other .. The respective scale 11, 11' can from a single-stroke display according to the presented embodiment, which gives the viewer an indication of the desired maximum or minimum volume level in the storage tank 4, or consist of a multi-line arrangement that allows a statement about which defined amount is received in the storage tank 4. In the embodiment after the FIGS. 2 and 3 the one scaling 11 is arranged parallel to the mounting direction X and the further scaling 11 'parallel to the mounting direction Y.

Der Schnittpunkt S der beiden Skalierungsbereiche 11, 11' bildet den Mittelpunkt der Füllstands-Kontrollöffnung 13. Die Füllstands-Kontrollöffnung 13 (Schauglas) ist von der Befüllöffnung 6 etwa 1/8 bis 1/5 der Gesamtlänge bzw. der Gesamtbreite des Vorratstanks 4 beabstandet. Die jeweilige Position der Kontrollöffnung 13 in Verbindung mit der jeweiligen Skalierung 11, 11' ist abhängig davon, welcher Füllpegel für den jeweiligen Vorratstank 4 anwenderseitig vorgegeben ist. Ein Dichtelement 12 in Form einer eingeklippsten Kunststoffkappe verschließt die Füllstands-Kontrollöffnung 13 und das Dichtelement ist in dem gezeigten Ausführungsbeispiel transparent ausgebildet, so dass der Fluidpegel auch an dem Dichtelement 12 entsprechend ablesbar ist.The intersection point S of the two scaling regions 11, 11 'forms the center of the fill level control opening 13. The fill level control opening 13 (sight glass) is spaced from the fill opening 6 by about 1/8 to 1/5 of the total length or the total width of the storage tank 4 , The respective position of the control opening 13 in conjunction with the respective scaling 11, 11 'is dependent on which filling level for the respective storage tank 4 is predetermined by the user. A sealing element 12 in the form of a clipped plastic cap closes the level control opening 13 and the sealing element is transparent in the embodiment shown formed so that the fluid level is also readable on the sealing element 12 accordingly.

Wie die Fig. 2 und 3 in einer jeweiligen Draufsicht auf die Seitenwand 10" zeigen, ist der Wärmetauscher 5 außermittig mit seinem Überdruckventil 14 an dem Vorratstank 4 angeordnet und in Bezug auf alle Seitenwände des Vorratstanks 4 gesehen in etwa bündig in die quaderartige Gesamtgestalt des Tanks 4 integriert. Die Kühlrippen 20 (s. Fig. 5) haben rechteckförmige, streifenartige Grundrißgestalt mit gleichbleibender Breite und Dicke über ihre gesamte Länge. Der Wärmetauscher 5 ist als eigenständiges Bauteil modulartig aufgebaut und kann über Steckverbindungen ohne Verrohrung mit dem Vorratstank 4 fluidführend verbunden werden. Dadurch ergibt sich eine sehr schnelle und einfache Gesamtmontagemöglichkeit.As the FIGS. 2 and 3 shown in a respective plan view of the side wall 10 ", the heat exchanger 5 is arranged off-center with its pressure relief valve 14 to the storage tank 4 and seen in relation to all side walls of the storage tank 4 integrated approximately flush in the cuboid overall shape of the tank 4. Die Kühlrippen 20 (s. Fig. 5 ) have rectangular, strip-like Grundrißgestalt with constant width and thickness over its entire length. The heat exchanger 5 is constructed as an independent component in a modular manner and can be fluidly connected via plug connections without piping to the storage tank 4. This results in a very quick and easy total assembly option.

Wie die Fig. 5 in einer Rückseitenansicht auf den Wärmetauscher 5 zeigt, ist dieser auf seiner Zulauf-Verteilkanalseite 21 mit Schrauben an zwei Laschen 25 mit dem Vorratstank 4 verbunden. Auf der Seite seines Ablaufkanals 22 ist der Wärmetauscher 5 formschlüssig lösbar in Hinterschnitte des Vorratstanks 4 eingebracht. Eine ebenso formschlüssige, lösbare Verbindung des Wärmetauschers 5 kann zusätzlich auf seiner Zulauf-Verteilkanalseite 21 vorgesehen sein, so dass sich insgesamt eine einfache Montage und eine flächige Verbindung des Wärmetauschers 5 mit dem Vorratstank 4 ergibt.As the Fig. 5 in a rear view of the heat exchanger 5, this is connected on its inlet distribution channel side 21 with screws on two tabs 25 to the storage tank 4. On the side of its outlet channel 22 of the heat exchanger 5 is positively releasably introduced into undercuts of the storage tank 4. An equally positive, detachable connection of the heat exchanger 5 may be additionally provided on its inlet distribution channel side 21, so that overall results in a simple assembly and a surface connection of the heat exchanger 5 with the storage tank 4.

Der Vorratstank 4 kann mit seinen Bestandteilen aufgrund seiner Herstellungsweise als Kunststoffteil in Blas- oder Rotationsformverfahren hergestellt dahingehend ausgestaltet sein, dass nicht nur mechanische und hydraulische Anschlußmöglichkeiten vorgesehen sind, sondern auch Kabelführungen für Anschlußkabel des elektrischen Antriebsmotors 2. So ist in den Fig. 1 bis 3 ein Spalt 26 zur Kabelführung vorgesehen, der sich etwa mittig an einer dem Gitter 18 für das Lüfterrad 3 benachbarten Kante der Seitenwand 10" befindet. Durch den Spalt 26 läßt sich die Stromversorgung für den Antriebsmotor 2 in genannter Weise durchführen.The storage tank 4 can be designed with its components due to its production as a plastic part in blow molding or rotational molding process to the effect that not only mechanical and hydraulic connection options are provided, but also cable guides for connection cable of the electric drive motor 2. So in the Fig. 1 to 3 a gap 26 is provided for cable management, which is approximately in the middle of an adjacent to the grid 18 for the fan 3 edge of the side wall Through the gap 26, the power supply for the drive motor 2 in the aforementioned manner can be performed.

Die Fig. 6 zeigt wiederum eine Ansicht der Unterseite der Fluidkühlvorrichtung 1 nebst derjenigen Seite, aus welcher das Fluid aus dem Vorratstank 4 entnommen wird. Hierzu ist an einem weiteren Eckbereich 27 des Tanks 4 eine Entnahmeöffnung 28 angeordnet, die eine entsprechende Fluidkupplung aufweisen kann. Die Entnahmeöffnung 28 ist ähnlich wie die Wandfläche 9 im Überschneidungsbereich dreier Seitenflächen des Vorratstanks 4 vorgesehen und ist der Wandfläche 9 diagonal gegenüberliegend am Vorratstank 4 angeordnet. Durch die Position der Entnahmeöffnung 28 ist es möglich, dass in beiden vorgesehen Einbaulagen der Fluidkühlvorrichtung 1 die Entnahmeöffnung 28 an der tiefsten Stelle des Vorratstanks 4 zu liegen kommt. Ebenso ist in der Fig. 6 eine Ansicht des Rücklaufstutzens 15 für Fluid, welches aus dem hydraulischen Arbeitskreis zurück zu dem Wärmetauscher 5 geführt ist, gezeigt. Der dahingehende Rücklaufstutzen 15 befindet sich insoweit an der Unterseite des kastenförmigen Zulauf-Verteilkanals 21.The Fig. 6 again shows a view of the underside of the fluid cooling device 1 in addition to the side from which the fluid is removed from the storage tank 4. For this purpose, a removal opening 28 is arranged at a further corner region 27 of the tank 4, which can have a corresponding fluid coupling. The removal opening 28 is similar to the wall surface 9 provided in the overlapping region of three side surfaces of the storage tank 4 and the wall surface 9 is arranged diagonally opposite the storage tank 4. Due to the position of the removal opening 28, it is possible that in both provided mounting positions of the fluid cooling device 1, the removal opening 28 comes to rest at the lowest point of the storage tank 4. Likewise is in the Fig. 6 a view of the return pipe 15 for fluid, which is guided from the hydraulic working circuit back to the heat exchanger 5 shown. The pertinent return pipe 15 is so far on the underside of the box-shaped inlet distribution channel 21st

Claims (9)

  1. A fluid cooling device (1) as a structural unit with a drive motor (2) which drives a rotatable fan impeller (3), and with a storage tank (4) with a filling opening (6) as well as a fill-level indicator (7), from which at least one fluid can be conveyed into a hydraulic working circuit, wherein in the hydraulic working circuit the fluid is heated and cooled via a heat exchanger (5) of the fluid cooling device (1), preferably can be returned again to the storage tank (4), characterised in that the structural unit is made as a turning assembly, in which the filling opening (6) for fluid and the fill-level indicator (7) are arranged on the storage tank (4) such that the indicator can be used or read in a first, vertical installation direction (X, Y) of the structural unit and in a second installation direction (Y, X) of the structural unit which is provided at a right angle to the first installation direction (X, Y), and that the filling opening (6) and the fill-level indicator (7) are arranged in a corner region (8) of the storage tank (4).
  2. The fluid cooling device according to claim 1, characterised in that the filling opening (6) is arranged on a wall surface (9) of the storage tank (4), which surface connects the three side walls (10, 10', 10") of the storage tank (4) in the corner region (8) to one another.
  3. The fluid cooling device according to one of the preceding claims, characterised in that the fill-level indicator (7) is formed by scaling (11, 11') which can be read in at least two installation directions (X, Y) of the structural unit arranged on the outside of a side wall (10") of the storage tank (4), and which indicator is arranged in the region of a fill-level check opening (13) sealed with a sealing element (12).
  4. The fluid cooling device according to the preceding claim, characterised in that the fill-level indicator (7) is located countersunk in the outline of the storage tank (4) and the sealing element (12) is made non-transparent in a transparent design of the side wall (10") of the storage tank (4) and is made transparent in a non-transparent design of the side wall (10") of the storage tank (4).
  5. The fluid cooling device according to one of the preceding claims, characterised in that the filling opening (6) is arranged in a corner region (8) of the storage tank (4) which is defined by a tilted triangular wall surface (9) which passes into the three side walls (10, 10', 10") which rest substantially perpendicular to one another.
  6. The fluid cooling device according to one of the preceding claims, characterised in that the one installation direction (X) runs parallel to the side wall (10') which encompasses the fan impeller (3) on the face side, and that the further installation direction (Y) is arranged parallel to the side wall (10") with the fill-level indicator (7).
  7. The fluid cooling device according to one of the preceding claims, characterised in that the heat exchanger (5) is inserted into the outline of the storage tank (4) and is enclosed at least on two sides by the storage tank (4).
  8. The fluid cooling device according to one of the preceding claims, characterised in that there is a pressure relief valve (14) of the structural unit adjacent to the filling opening (6) and the fill-level indicator (7).
  9. The fluid cooling device according to one of the preceding claims, characterised in that a return connecting piece (15) for fluid flowing out of the hydraulic working circuit into the structural unit is arranged repositionably on the latter.
EP11711450.4A 2010-03-26 2011-03-22 Fluid cooling device Active EP2553276B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010012952A DE102010012952A1 (en) 2010-03-26 2010-03-26 Fluid Cooler
PCT/EP2011/001399 WO2011116924A1 (en) 2010-03-26 2011-03-22 Fluid cooling device

Publications (2)

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EP2553276A1 EP2553276A1 (en) 2013-02-06
EP2553276B1 true EP2553276B1 (en) 2019-08-07

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EP11711450.4A Active EP2553276B1 (en) 2010-03-26 2011-03-22 Fluid cooling device

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US (1) US9222492B2 (en)
EP (1) EP2553276B1 (en)
DE (1) DE102010012952A1 (en)
WO (1) WO2011116924A1 (en)

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US9222492B2 (en) 2015-12-29
WO2011116924A1 (en) 2011-09-29
US20130081387A1 (en) 2013-04-04
EP2553276A1 (en) 2013-02-06
DE102010012952A1 (en) 2011-09-29

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