EP0968371B1 - Fluid cooling device - Google Patents

Fluid cooling device Download PDF

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Publication number
EP0968371B1
EP0968371B1 EP98912445A EP98912445A EP0968371B1 EP 0968371 B1 EP0968371 B1 EP 0968371B1 EP 98912445 A EP98912445 A EP 98912445A EP 98912445 A EP98912445 A EP 98912445A EP 0968371 B1 EP0968371 B1 EP 0968371B1
Authority
EP
European Patent Office
Prior art keywords
fluid
cooling device
oil tank
fluid cooling
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98912445A
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German (de)
French (fr)
Other versions
EP0968371A1 (en
Inventor
Lothar Thome
Wolfgang Schabbach
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Hydac Fluidtechnik GmbH
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Hydac Fluidtechnik GmbH
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Publication date
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Publication of EP0968371A1 publication Critical patent/EP0968371A1/en
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Anticipated expiration legal-status Critical
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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
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • 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
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20507—Type of prime mover
    • F15B2211/20515—Electric motor
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/625—Accumulators

Definitions

  • the invention relates to a fluid cooling device as a structural unit with a Motor that drives a fan wheel and a fluid pump that draw fluid from one Takes the oil tank and pumps it into a hydraulic working group that holds the fluid heated, and leads to a heat exchanger from which the fluid is cooled in the oil tank returns according to the features of the preamble of claim 1.
  • Related fluid cooling devices also referred to as oil air coolers can be used as compact structural units (DE 44 00 487 A1) in hydraulic or install liquid circuits in systems or machines.
  • the Liquid cooling is usually based on the inlet temperature difference between liquid and ambient air, volume flow and air flow dependent. Thermal problems caused by multi-shift operation and higher air temperatures can also be prevented.
  • the oil tank must be appropriately large Have volume.
  • the object of the invention to further improve the known fluid cooling devices, that they are still compact and still have one have relatively large volume liquid or oil containers as well as maintenance and are easy to assemble.
  • a fluid cooling device solves this problem with the features of claim 1.
  • the fluid cooling device is between the raised tub edges of the oil tank Arranged housing part that receives the fan wheel and an air duct forms for the heat exchanger through which the fluid is guided.
  • the sole side at least partially over the Sole length also has fastening webs. Because of that The foot section is a space-saving, secure attachment of the entire fluid cooling device possible on fixed components and housing walls.
  • the fluid cooling device has an electric motor 10, which has a fan wheel 12 and drives a fluid pump 14.
  • the fluid pump 14 takes fluid from one Oil container 16 and pumps it into a hydraulic working group 18, of which 5 with the usual short names, the connections for the Hydraulic lines are shown.
  • the fluid heats up accordingly and is to be heated up by the fluid cooling device a predeterminable temperature value can be cooled.
  • a heat exchanger is used for this 20, from which the fluid returns cooled to the oil container 16.
  • the drive direction of the fluid pump 14 is in the viewing direction of FIG. 2 seen there indicated by an arrow 22.
  • the oil container 16 is trough-shaped and with raised tub edges 24 in the manner of a half-shell educated. This includes at least partially from the bottom the motor 10 and the fluid pump 14. Between the raised tub edges 24 of the oil container 16, a housing part 26 is arranged, which Fan wheel 12 receives and an air duct 28 for the heat exchanger 20 forms through which the fluid is guided.
  • the fastening shoe 32 in question is, as is particularly the case in FIGS. 1 and 3 show, hollow box-shaped and the toe 38 points in the direction of the engine 10.
  • the mounting shoe 32 is thus in its hollow box-like Shell arrangement transversely to the longitudinal orientation of the trough-shaped oil container 16 arranged and in operative connection with this. Initiated vibrations in operation of the fluid cooling device can thus be safely via the Fixing shoe 32 in the respective stand device or the underground derived.
  • the fastening shoe 32 is bulge-resistant and allows especially through the sloping fastening part between the toe 38 and the horizontal support surface for the underside of the oil tank pan 16 a safe, low-vibration introduction of force into the fluid cooling device detachable area.
  • the oil reservoir 16 is in the region of the engine 10 in a trough-like cross section below it dimensioned smaller than the comparable cross-sectional area of the oil container 16, which is arranged below the fluid pump 14. This results in a chamber system of the oil container 16 with different ones Cross-sectional areas.
  • the fan wheel 12 is from a drive shaft 40 penetrated or firmly connected to this on impact, in the manner of a Hollow shaft includes the output shaft 42 of the motor 10 and the drive shaft 44 drives the fluid pump 14.
  • the relevant axis and shaft arrangement is oriented coaxially to a longitudinal axis 46 of the fluid cooling device. The exact relationships result in particular from the sectional view according to Fig.3.
  • the hydraulic working circuit 18 with a hydraulic accumulator 48 for example in the form of a membrane accumulator, the cooling device fluid-carrying in connection with a protection of the printing or working group against Pressure fluctuations allowed and fluid volume losses can compensate.
  • the relevant hydraulic accumulator 48 is shown in FIG Fig.3 omitted.
  • the supply line opening into the hydraulic accumulator 48 50 of the heat exchanger 20 also opens into the part of the oil container 16 which is arranged below the motor 10, one leading to the fluid pump 14 Feed line 52 into the oil container 16 arranged below it empties.
  • the fluid cooling device for pressure monitoring a conventional manometer 54, for filtering the fluid at least one filter unit 56 and for a level control of the oil container 16 at least a relevant display device 58. Otherwise, the oil tank 16 provided with a filling filter 60 for the fluid.
  • the circuit diagram after the 5 explains the function of the fluid cooling device in more detail.
  • the fluid pump 14 removes fluid, in particular hydraulic oil, via the feed line 52, out of the oil tank 16 and conveys this via the filter unit 56 in Direction of connection P of the hydraulic circuit 18.
  • the pressure gauge 54 monitors the pressure in the hydraulic working group 18 and Hydraulic accumulator 48 compensates for pressure fluctuations in the system. That is in the hydraulic Working group 18 heated fluid returns via the connection point T back into the fluid cooling device and passes through the supply line 50 in the heat exchanger 20 and from there appropriately cooled in return in the oil tank 16 for a new circulation.
  • Both the air cooler as well as the hydraulic working group can with further useful connections A, B, M, MS, T1 and P1 may be provided. restrictors as well as pressure relief valves of conventional design secure the hydraulic Circle against overload.

Abstract

A fluid cooling device in the form of a modular unit has a motor which drives a ventilator wheel and a hydraulic pump which takes fluid from an oil reservoir and delivers it to a hydraulic work circuit. The circuit heats the fluid and sends it to a heat exchanger from which the fluid returns, cooled, to the oil reservoir. The oil reservoir, being shaped like a trough and surrounding at least part of the motor and the hydraulic pump and having high walls in the manner of a half-shell, results in a relatively high-volume oil reservoir with is a part of the fluid cooling device with a compact, space-saving structure by at least partially containing parts of the fluid cooling device to save space.

Description

Die Erfindung betrifft eine Fluidkühlvorrichtung als Baueinheit mit einem Motor, der ein Lüfterrad sowie eine Flüidpumpe antreibt, die Fluid aus einem Ölbehälter nimmt und in einen hydraulischen Arbeitskreis fördert, der das Fluid erwärmt, sowie zu einem Wärmetauscher führt, aus dem das Fluid gekühlt in den Ölbehälter zurückkehrt gemäß den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to a fluid cooling device as a structural unit with a Motor that drives a fan wheel and a fluid pump that draw fluid from one Takes the oil tank and pumps it into a hydraulic working group that holds the fluid heated, and leads to a heat exchanger from which the fluid is cooled in the oil tank returns according to the features of the preamble of claim 1.

Dahingehende Fluidkühlvorrichtungen, die auch als Ölluftkühler bezeichnet werden, lassen sich als kompakte Baueinheiten (DE 44 00 487 A1) in Hydraulik- oder Flüssigkeitskreisläufe von Anlagen oder Maschinen einbauen. Die Flüssigkeitskühlung ist dabei in der Regel von der Eintrittstemperaturdifferenz zwischen Flüssigkeit und Umgebungsluft, vom Volumenstrom und dem Luftdurchsatz abhängig. Wärmeprobleme, die durch mehrschichtigen Betrieb und höhere Lufttemperatur entstehen, können ebenfalls verhindert werden. Um dahingehende Fluidkühlvorrichtungen auch für größere hydraulische Arbeitskreise einsetzen zu können, muß der Ölbehälter ein entsprechend groß dimensioniertes Volumen aufweisen.Related fluid cooling devices, also referred to as oil air coolers can be used as compact structural units (DE 44 00 487 A1) in hydraulic or install liquid circuits in systems or machines. The Liquid cooling is usually based on the inlet temperature difference between liquid and ambient air, volume flow and air flow dependent. Thermal problems caused by multi-shift operation and higher air temperatures can also be prevented. Around relevant fluid cooling devices also for larger hydraulic working groups To be able to use, the oil tank must be appropriately large Have volume.

Es ist zwar in der DE 43 37 131 A1 bei einem Hydraulikaggregat bereits vorgeschlagen worden, zur Vergrößerung des Ölbehältervolumens den Ölbehälter in der Art einer hohlen Kapsel um eine Motor- und Pumpeneinheit des Hydraulikaggregates anzuordnen, die aber den freien Zugang von außen her, beispielsweise zu Montage- und Wartungszwecken, zu der Motor- und Pumpeneinheit des Hydraulikaggregates deutlich erschwert.It is already proposed in DE 43 37 131 A1 for a hydraulic unit the oil tank to increase the oil tank volume in the manner of a hollow capsule around a motor and pump unit of the hydraulic unit to arrange, but free access from the outside, for example for assembly and maintenance purposes, to the motor and pump unit of the hydraulic unit significantly more difficult.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die bekannten Fluidkühlvorrichtungen dahingehend weiterzuverbessern, daß sie nach wie vor kompakt aufbauen und dennoch über einen relativ großvolumigen Flüssigkeits- oder Ölbehälter verfügen sowie wartungsund montagefreundlich sind. Eine dahingehende Aufgabe löst eine Fluidkühlvorrichtung mit den Merkmalen des Anspruches 1.Starting from this prior art, the object of the invention to further improve the known fluid cooling devices, that they are still compact and still have one have relatively large volume liquid or oil containers as well as maintenance and are easy to assemble. A fluid cooling device solves this problem with the features of claim 1.

Gemäß dem kennzeichnenden Teil des Anspruches 1, ist ein relativ großvolumig aufbauender Ölbehälter gegeben, der dennoch platzsparend in Kompaktbauweise Bestandteil der Fluidkühlvorrichtung ist, indem er Teile derselben platzsparend zumindest teilweise umfaßt. Ausgehend von dem von den Wannenrändern freigelassenen Bauraum ist darüber hinaus zu Montage- und Wartungszwecken eine gute Zugänglichkeit der Motorund Fluidpumpenbaueinheit gewährleistet.According to the characterizing part of claim 1, there is a relatively large-volume oil tank, which nevertheless space-saving in a compact design part of the fluid cooling device is by including parts of the same at least partially to save space. outgoing of the construction space left free by the tub edges is above Good accessibility for the engine and for assembly and maintenance purposes Fluid pump assembly guaranteed.

Bei der erfindungsgemäßen Fluidkühlvorrichtung ist zwischen den hochgezogenen Wannenrändern des Ölbehälters ein Gehäuseteil angeordnet, das das Lüfterrad aufnimmt und einen Luftführungsschacht für den Wärmetauscher bildet, durch den das Fluid geführt ist. Vorzugsweise ist dabei in Verlängerung des Gehäuseteils unterhalb des Ölbehälters ein Fußteil angeordnet, das in der Art eines der Befestigung der Vorrichtung dienenden Schuhs ausgebildet ist, dessen Sohlenseite zumindest teilweise über die Sohlenlänge hinaus Befestigungsstege aufweist. Aufgrund des dahingehenden Fußteils ist eine platzsparende sichere Befestigung der gesamten Fluidkühlvorrichtung an feststehenden Bauteilen und Gehäusewänden möglich.In the fluid cooling device according to the invention is between the raised tub edges of the oil tank Arranged housing part that receives the fan wheel and an air duct forms for the heat exchanger through which the fluid is guided. Preferably is an extension of the housing part below the oil tank Arranged foot part, which serves in the manner of a fastening of the device Shoe is formed, the sole side at least partially over the Sole length also has fastening webs. Because of that The foot section is a space-saving, secure attachment of the entire fluid cooling device possible on fixed components and housing walls.

Durch die schuhartige Ausgestaltung des Fußteils ist die dahingehende Fixierung darüber hinaus vibrationsarm und die rechts und links an dem Gehäuseteil befestigten Baukomponenten der Fluidkühlvorrichtung greifen in der Art einer Waage ausbalanciert an dem Gehäuseteil und mithin an dem Fußteil an.Due to the shoe-like design of the foot section, this fixation In addition, low vibration and the right and left on the housing part attached components of the fluid cooling device engage in art a balance balanced on the housing part and thus on the foot part.

Neben einem kompakten Aufbau für die Fluidkühlvorrichtung wird ferner erreicht, daß die Massekomponenten der Kühlvorrichtung gleichmäßig verteilt sind, so daß im Betrieb auch bei entsprechenden Eigenbewegungen und Vibrationen ein sicherer Stand über den Befestigungsschuh erreichbar ist. Auf weitere Ausgleichsmaßnahmen kann somit verzichtet werden, was wiederum günstig für die angestrebte Baugrößenminimierung ist.In addition to a compact structure for the fluid cooling device achieved that the mass components of the cooling device evenly distributed are, so that in operation with appropriate own movements and vibrations a secure stand can be reached via the fastening shoe. On further compensatory measures can thus be dispensed with, which in turn is favorable for the desired size minimization.

Weitere vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche.Further advantageous embodiments are the subject of the dependent claims.

Im folgenden wird die Fluidkühlvorrichtung anhand einer Ausführungsform nach der Zeichnung näher erläutert.
Es zeigen in prinzipieller und teilweise nicht maßstäblicher Darstellung die

Fig.1
eine perspektivische Ansicht auf die Fluidkühlvorrichtung;
Fig.2 und 4
jeweils eine stirnseitige Endansicht;
Fig.3
einen Schnitt längs der Linie III - III in Fig.2;
Fig.5
den in Schaltsymbolen dargestellten Grundaufbau der Fluidkühlvorrichtung.
In the following the fluid cooling device is explained in more detail using an embodiment according to the drawing.
They show the principle and partly not to scale
Fig.1
a perspective view of the fluid cooling device;
Fig. 2 and 4
each have a front end view;
Figure 3
a section along the line III - III in Figure 2;
Figure 5
the basic structure of the fluid cooling device shown in circuit symbols.

Die Fluidkühlvorrichtung weist einen Elektromotor 10 auf, der ein Lüfterrad 12 sowie eine Fluidpumpe 14 antreibt. Die Fluidpumpe 14 nimmt Fluid aus einem Ölbehälter 16 und fördert es in einen hydraulischen Arbeitskreis 18, von dem in der Fig.5 mit den üblichen Kurzbezeichnungen die Anschlüsse für die Hydraulikleitungen dargestellt sind. In dem hydraulischen Arbeitskreis 18 erwärmt sich entsprechend das Fluid und soll von der Fluidkühlvorrichtung auf einen vorgebbaren Temperaturwert rückgekühlt werden. Hierzu dient ein Wärmetauscher 20, aus dem das Fluid gekühlt in den Ölbehälter 16 zurückkehrt. Die Antriebsrichtung der Fluidpumpe 14 ist in Blickrichtung auf die Fig.2 gesehen dort mit einem Pfeil 22 angegeben.The fluid cooling device has an electric motor 10, which has a fan wheel 12 and drives a fluid pump 14. The fluid pump 14 takes fluid from one Oil container 16 and pumps it into a hydraulic working group 18, of which 5 with the usual short names, the connections for the Hydraulic lines are shown. In the hydraulic working group 18 the fluid heats up accordingly and is to be heated up by the fluid cooling device a predeterminable temperature value can be cooled. A heat exchanger is used for this 20, from which the fluid returns cooled to the oil container 16. The drive direction of the fluid pump 14 is in the viewing direction of FIG. 2 seen there indicated by an arrow 22.

Wie insbesondere die Fig.1 zeigt, ist der Ölbehälter 16 wannenförmig ausgebildet und mit hochgezogenen Wannenrändern 24 in der Art einer Halbschale ausgebildet. Diese umfaßt zumindest teilweise von der Unterseite her den Motor 10 sowie die Fluidpumpe 14. Zwischen den hochgezogenen Wannenrändern 24 des Ölbehälters 16 ist ein Gehäuseteil 26 angeordnet, das das Lüfterrad 12 aufnimmt und einen Luftführungsschacht 28 für den Wärmetauscher 20 bildet, durch den das Fluid geführt ist.As FIG. 1 shows in particular, the oil container 16 is trough-shaped and with raised tub edges 24 in the manner of a half-shell educated. This includes at least partially from the bottom the motor 10 and the fluid pump 14. Between the raised tub edges 24 of the oil container 16, a housing part 26 is arranged, which Fan wheel 12 receives and an air duct 28 for the heat exchanger 20 forms through which the fluid is guided.

In Verlängerung des Gehäuseteils 26 ist unterhalb des Ölbehälters 16 ein Fußteil 30 angeordnet, das in der Art einer der Befestigung der Vorrichtung dienenden Schuhs 32 ausgebildet ist, dessen Sohlenseite 34 zumindest teilweise über die Sohlenlänge hinaus zwei in Längsrichtung der Fluidkühlvorrichtung einander gegenüberliegende Befestigungsstege 36 aufweist. Der in Rede stehende Befestigungsschuh 32 ist, wie dies insbesondere die Fig.1 und 3 zeigen, hohlkastenartig ausgebildet und die Schuhspitze 38 zeigt in Richtung des Motors 10. Der Befestigungsschuh 32 ist somit in seiner hohlkastenartigen Schalenanordnung quer zur Längsausrichtung des wannenförmigen Ölbehälters 16 angeordnet und mit diesem in Wirkverbindung stehend. Eingeleitete Vibrationen im Betrieb der Fluidkühlvorrichtung lassen sich somit sicher über den Befestigungsschuh 32 in die jeweilige Ständervorrichtung oder den Untergrund ableiten. Der dahingehende Befestigungsschuh 32 ist beulsteif ausgeführt und erlaubt insbesondere über das schräge Befestigungsteil zwischen Schuhspitze 38 und der horizontal verlaufenden Auflagefläche für die Unterseite der Ölbehälterwanne 16 eine sichere vibrationsarme Krafteinleitung in den die Fluidkühlvorrichtung abständernden Bereich.An extension of the housing part 26 is below the oil container 16 Foot part 30 arranged in the manner of one of the attachment of the device serving shoe 32 is formed, the sole side 34 at least partially beyond the sole length two in the longitudinal direction of the fluid cooling device mutually opposite fastening webs 36. The in The fastening shoe 32 in question is, as is particularly the case in FIGS. 1 and 3 show, hollow box-shaped and the toe 38 points in the direction of the engine 10. The mounting shoe 32 is thus in its hollow box-like Shell arrangement transversely to the longitudinal orientation of the trough-shaped oil container 16 arranged and in operative connection with this. Initiated vibrations in operation of the fluid cooling device can thus be safely via the Fixing shoe 32 in the respective stand device or the underground derived. The fastening shoe 32 is bulge-resistant and allows especially through the sloping fastening part between the toe 38 and the horizontal support surface for the underside of the oil tank pan 16 a safe, low-vibration introduction of force into the fluid cooling device detachable area.

Der Ölbehälter 16 ist im Bereich des Motors 10 im wannenartigen Querschnitt unterhalb desselben kleiner dimensioniert als der vergleichbare Querschnittsbereich des Ölbehälters 16, der unterhalb der Fluidpumpe 14 angeordnet ist. Dadurch ergibt sich ein Kammersystem des Ölbehälters 16 mit unterschiedlichen Querschnittsbereichen. Das Lüfterrad 12 ist von einer Antriebswelle 40 durchgriffen oder mit dieser auf Stoß fest verbunden, die in der Art einer Hohlwelle die Abtriebswelle 42 des Motors 10 umfaßt sowie die Antriebsachse 44 der Fluidpumpe 14 antreibt. Die dahingehende Achs- und Wellenanordnung ist koaxial zu einer Längsachse 46 der Fluidkühlvorrichtung orientiert. Die genauen Verhältnisse ergeben sich insbesondere aus der Schnittdarstellung nach der Fig.3.The oil reservoir 16 is in the region of the engine 10 in a trough-like cross section below it dimensioned smaller than the comparable cross-sectional area of the oil container 16, which is arranged below the fluid pump 14. This results in a chamber system of the oil container 16 with different ones Cross-sectional areas. The fan wheel 12 is from a drive shaft 40 penetrated or firmly connected to this on impact, in the manner of a Hollow shaft includes the output shaft 42 of the motor 10 and the drive shaft 44 drives the fluid pump 14. The relevant axis and shaft arrangement is oriented coaxially to a longitudinal axis 46 of the fluid cooling device. The exact relationships result in particular from the sectional view according to Fig.3.

Des weiteren ist der hydraulische Arbeitskreis 18 mit einem Hydrospeicher 48, beispielsweise in Form eines Membranspeichers, der Kühlvorrichtung fluidführend in Verbindung, der eine Absicherung des Druck- oder Arbeitskreises gegen Druckschwankungen erlaubt und Fluidmengenverluste ausgleichen kann. Der einfacheren Darstellung wegen ist der dahingehende Hydrospeicher 48 in der Fig.3 weggelassen. Die in den Hydrospeicher 48 mündende Versorgungsleitung 50 des Wärmetauschers 20 mündet auch in den Teil des Ölbehälters 16, der unterhalb des Motors 10 angeordnet ist, wobei eine zur Fluidpumpe 14 führende Zuführleitung 52 in den unterhalb von ihr angeordneten Ölbehälter 16 mündet. Des weiteren weist die Fluidkühlvorrichtung zur Drucküberwachung ein übliches Manometer 54, zur Filtrierung des Fluids mindestens eine Filtereinheit 56 sowie für eine Füllstandskontrolle des Ölbehälters 16 mindestens eine dahingehende Anzeigeeinrichtung 58 auf. Im übrigen ist der Ölbehälter 16 mit einem Einfüllfilter 60 für das Fluid versehen.Furthermore, the hydraulic working circuit 18 with a hydraulic accumulator 48, for example in the form of a membrane accumulator, the cooling device fluid-carrying in connection with a protection of the printing or working group against Pressure fluctuations allowed and fluid volume losses can compensate. The For the sake of simplicity, the relevant hydraulic accumulator 48 is shown in FIG Fig.3 omitted. The supply line opening into the hydraulic accumulator 48 50 of the heat exchanger 20 also opens into the part of the oil container 16 which is arranged below the motor 10, one leading to the fluid pump 14 Feed line 52 into the oil container 16 arranged below it empties. Furthermore, the fluid cooling device for pressure monitoring a conventional manometer 54, for filtering the fluid at least one filter unit 56 and for a level control of the oil container 16 at least a relevant display device 58. Otherwise, the oil tank 16 provided with a filling filter 60 for the fluid.

Zum besseren Verständnis wird anhand der Schaltplandarstellung nach der Fig.5 die Funktion der Fluidkühlvorrichtung näher erläutert. Nach Inbetriebnahme des Elektromotors 10 treibt dieser über die Achsanordnung 42,44 sowohl die Fluidpumpe 14 als auch das Lüfterrad 12 gleichsinnig an. Die Fluidpumpe 14 entnimmt über die Zuführleitung 52 Fluid, insbesondere Hydrauliköl, aus dem Ölbehälter 16 und fördert dieses über die Filtereinheit 56 in Richtung des Anschlusses P des hydraulischen Arbeitskreises 18. Das Manometer 54 überwacht dabei den Druck im hydraulischen Arbeitskreis 18 und der Hydrospeicher 48 gleicht Druckschwankungen im System aus. Das sich im hydraulischen Arbeitskreis 18 erwärmte Fluid kehrt über die Anschlußstelle T zurück in die Fluidkühlvorrichtung und gelangt über die Versorgungsleitung 50 in den Wärmetauscher 20 und von dort entsprechend gekühlt in Rückführung in den Ölbehälter 16 für einen erneuten Umlauf. Sowohl die Luftkühlvorrichtung als auch der hydraulische Arbeitskreis können mit weiteren Nutzanschlüssen A, B, M, MS, T1 und P1 versehen sein. Drosseleinrichtungen sowie Druckbegrenzungsventile üblicher Bauart sichern den hydraulischen Kreis gegen Überlastung ab. For a better understanding, the circuit diagram after the 5 explains the function of the fluid cooling device in more detail. After commissioning of the electric motor 10 drives it both via the axle arrangement 42, 44 the fluid pump 14 and the fan wheel 12 in the same direction. The fluid pump 14 removes fluid, in particular hydraulic oil, via the feed line 52, out of the oil tank 16 and conveys this via the filter unit 56 in Direction of connection P of the hydraulic circuit 18. The pressure gauge 54 monitors the pressure in the hydraulic working group 18 and Hydraulic accumulator 48 compensates for pressure fluctuations in the system. That is in the hydraulic Working group 18 heated fluid returns via the connection point T back into the fluid cooling device and passes through the supply line 50 in the heat exchanger 20 and from there appropriately cooled in return in the oil tank 16 for a new circulation. Both the air cooler as well as the hydraulic working group can with further useful connections A, B, M, MS, T1 and P1 may be provided. restrictors as well as pressure relief valves of conventional design secure the hydraulic Circle against overload.

Mit der vorstehend beschriebenen Fluidkühlvorrichtung lassen sich bei ausgesprochen kompakter Bauweise hohe Fluidmengen in dem wannenförmigen Ölbehälter bevorraten und über das Fußteil der Kühlvorrichtung läßt sich dennoch ein sicherer vibrationsarmer Stand im Betrieb der Vorrichtung erreichen.With the fluid cooling device described above can be pronounced at compact design high amounts of fluid in the trough-shaped oil tank stockpile and the foot of the cooler can still achieve a safe low-vibration level during operation of the device.

Claims (9)

  1. Fluid cooling device as a unit with a motor (10) driving a ventilator rotor (12) and a fluid pump (14) taking fluid from an oil tank (16) and delivering it to a hydraulic operating circuit (18) which heats the fluid, and carries it to a heat exchanger (20) from which cooled fluid returns to the oil tank (16) that is the pan-shaped and, with its edges (24) extended to a high point like a semi-pan, at least partly surrounds the motor (10) and the fluid pump (14), characterised in that a casing part (26) is arranged between the high pan edges (24) of the oil tank (16), accommodating the ventilator rotor (12) and forming an air shaft (28) for the heat exchanger (20) through which the fluid is carried.
  2. Fluid cooling device according to claim 1, characterised in that a foot part (30) is arranged in the extension of the casing part (26) underneath the oil tank (16) designed in the form of a shoe (32) serving the purpose of mounting the device, the sole side (34) of which has mounting bars (36) extending at least partly beyond the length of the sole.
  3. Fluid cooling device according to claim 2, characterised in that the mounting shoe (32) is box-like and the shoe point (38) points in the direction of the motor (10).
  4. Fluid cooling device according to one of the claims 1 to 3, characterised in that the dimensions of the pan-like section of the oil tank (16) in the area of the motor (10) are smaller than the comparable area of the oil tank (16) arranged underneath the fluid pump (14).
  5. Fluid cooling device according to one of the claims 1 to 4, characterised in that the drive shaft (40) in the form of a hollow shaft comprising the output shaft (42) of the motor (10) and the drive shaft (44) of the fluid pump (14) passes through the ventilator rotor (12).
  6. Fluid cooling device according to one of the claims 1 to 5, characterised in that the hydraulic circuit (18) communicates hydraulically with a hydraulic accumulator (48) of the cooling device.
  7. Fluid cooling device according to claim 6, characterised in that the supply line (50) of the heat exchanger (20) terminating in the hydraulic accumulator also terminates in the part of the oil tank (16) which is arranged underneath the motor (10) and that the feed line (52) leading to the fluid pump (14) terminates in the oil tank (16) arranged underneath it.
  8. Fluid cooling device according to one of the claims 1 to 7, characterised in that it has a pressure gauge (54) for pressure monitoring, at least one filter unit (56) for filtering the fluid and at least one appropriate gauge (58) for checking the level in the oil tank (16).
  9. Fluid cooling device according to one of the claims 1 to 8, characterised in that the oil tank (16) has a filler filter (60) for the fluid.
EP98912445A 1997-03-20 1998-03-06 Fluid cooling device Expired - Lifetime EP0968371B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19711591A DE19711591A1 (en) 1997-03-20 1997-03-20 Fluid cooling device
DE19711591 1997-03-20
PCT/EP1998/001263 WO1998042986A1 (en) 1997-03-20 1998-03-06 Fluid cooling device

Publications (2)

Publication Number Publication Date
EP0968371A1 EP0968371A1 (en) 2000-01-05
EP0968371B1 true EP0968371B1 (en) 2002-11-20

Family

ID=7823993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98912445A Expired - Lifetime EP0968371B1 (en) 1997-03-20 1998-03-06 Fluid cooling device

Country Status (11)

Country Link
US (1) US6290473B1 (en)
EP (1) EP0968371B1 (en)
JP (1) JP2001518172A (en)
CN (1) CN1097683C (en)
AT (1) ATE228213T1 (en)
DE (2) DE19711591A1 (en)
DK (1) DK0968371T3 (en)
ES (1) ES2187948T3 (en)
FI (1) FI109485B (en)
PT (1) PT968371E (en)
WO (1) WO1998042986A1 (en)

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DE10331216B3 (en) * 2003-07-10 2004-09-09 Hydac System Gmbh Liquid cooling device for cooling liquid has second fluid pump pumping second form of fluid through second circuit
WO2004113698A1 (en) 2003-06-17 2004-12-29 Hydac System Gmbh Fluid cooling device
DE10328177A1 (en) * 2003-06-17 2005-01-13 Hydac System Gmbh Fluid-cooling device for hydraulic circuits of driving engines or machine tools comprises a feed reservoir partly surrounding a ventilation wheel and forming a preferably plastic ventilation housing
DE102010056567A1 (en) 2010-12-30 2012-07-05 Hydac Cooling Gmbh Liquid-air cooling system

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US7424907B2 (en) * 2002-10-01 2008-09-16 Enertron, Inc. Methods and apparatus for an integrated fan pump cooling module
DE10312417A1 (en) * 2003-03-20 2004-09-30 Henschel Recycling Technik Gmbh Hydraulic aggregate, has drive unit, consisting of a main engine and associated pumps, which operationally coordinates with a pump unit, a cooling equipment, an air filter, a heating fixing device, and a filter
DE10312416A1 (en) * 2003-03-20 2004-09-30 Henschel Recycling Technik Gmbh Filter structure for hydraulic aggregates, has filter to filter down oil returned by main oil circuit to the oil tank via a return pipe
US7296407B2 (en) 2004-03-08 2007-11-20 Bosch Rexroth Corporation Hydraulic service module
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DE102008034175A1 (en) * 2008-07-22 2010-01-28 Linde Material Handling Gmbh Electrohydraulic drive arrangement for driving e.g. working hydraulics system of ground conveyor, has ventilation device and exchanger connected to construction unit, where ventilation device cools control electronics unit
DE102010012952A1 (en) 2010-03-26 2011-09-29 Hydac Ag Fluid Cooler
CN102410286B (en) * 2011-11-08 2014-05-21 攀钢集团工程技术有限公司 Cooling system, hydraulic transmission system comprising same and vehicle
US9228760B2 (en) * 2012-04-27 2016-01-05 Mac, Inc. Flameless heating system
DE102014002410A1 (en) * 2014-02-20 2015-08-20 Hydac Fluidtechnik Gmbh compact unit
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DE10328177A1 (en) * 2003-06-17 2005-01-13 Hydac System Gmbh Fluid-cooling device for hydraulic circuits of driving engines or machine tools comprises a feed reservoir partly surrounding a ventilation wheel and forming a preferably plastic ventilation housing
DE10331216B3 (en) * 2003-07-10 2004-09-09 Hydac System Gmbh Liquid cooling device for cooling liquid has second fluid pump pumping second form of fluid through second circuit
WO2005005843A1 (en) 2003-07-10 2005-01-20 Hydac System Gmbh Fluid cooling device
DE102010056567A1 (en) 2010-12-30 2012-07-05 Hydac Cooling Gmbh Liquid-air cooling system
WO2012089316A2 (en) 2010-12-30 2012-07-05 Hydac Cooling Gmbh Liquid-air cooling system
US9267746B2 (en) 2010-12-30 2016-02-23 Hydac Cooling Gmbh Liquid-air cooling system

Also Published As

Publication number Publication date
DE59806358D1 (en) 2003-01-02
ATE228213T1 (en) 2002-12-15
CN1250508A (en) 2000-04-12
DE19711591A1 (en) 1998-09-24
WO1998042986A1 (en) 1998-10-01
JP2001518172A (en) 2001-10-09
CN1097683C (en) 2003-01-01
FI109485B (en) 2002-08-15
DK0968371T3 (en) 2003-03-17
FI19991945A (en) 1999-09-13
US6290473B1 (en) 2001-09-18
EP0968371A1 (en) 2000-01-05
ES2187948T3 (en) 2003-06-16
PT968371E (en) 2003-02-28

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