EP3504433B1 - Motor pump device - Google Patents
Motor pump device Download PDFInfo
- Publication number
- EP3504433B1 EP3504433B1 EP17761804.8A EP17761804A EP3504433B1 EP 3504433 B1 EP3504433 B1 EP 3504433B1 EP 17761804 A EP17761804 A EP 17761804A EP 3504433 B1 EP3504433 B1 EP 3504433B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- motor
- pump device
- housing
- electric 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 claims description 26
- 238000009434 installation Methods 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 11
- 239000003921 oil Substances 0.000 description 11
- 239000002826 coolant Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000005068 cooling lubricant Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- 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
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
- F04B23/103—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being a radial piston pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/007—General arrangements of parts; Frames and supporting elements
-
- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
- F04B23/026—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir a pump-side forming a wall of 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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/08—Combinations of two or more pumps the pumps being of different types
- F04B23/12—Combinations of two or more pumps the pumps being of different types at least one pump being of the rotary-piston positive-displacement type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/70—Use of multiplicity of similar components; Modular construction
Definitions
- the invention relates to a motor pump device.
- Such devices are also referred to in technical terms as motor-pump units and are primarily used to supply hydraulic circuits with hydraulic oil of predeterminable pressure.
- the units mentioned are regularly characterized by a high power density with small dimensions and can be provided as a functional unit for the pressurized oil supply to oil-hydraulic systems.
- Such a hydraulic compact unit is an example in the DE 196 52 706 A1 It is shown that the tank unit has an annular cylindrical pressure medium container, which has an outer outer wall and an inner outer wall as well as two end flanges, with a closed electric motor surrounded by the pressure medium container and cooled by a cooling air flow, and with a hydraulic pump that can be driven by the electric motor as a supply pump for the respective hydraulic Circulation.
- the aim here is that such a unit has a very compact structure with sufficient cooling of the electric motor for continuous operation, in particular in the form of an attachment.
- the pressure medium container keeps the electric motor tight surrounds and the inner outer wall of the pressure medium container provided with cooling fins serves as a guide for the cooling air flow passing over the electric motor. In this way, all of the air flowing between the electric motor and the pressure medium container is used to the full for cooling the electric motor and also sweeps closely along the housing of the winding heads of the electric motor, which are removed from a fan wheel.
- the DE 299 06 881 U1 discloses a motor-pump device, designed as a modular system, consisting of an electric motor, a radial piston pump that can be driven by the electric motor and a gear pump, a tank unit and add-on parts, with several used supply pumps conveying to a common supply connection for the implementation of a hydraulic single or multi-circuit system.
- the pump unit shown there has two bearings for the drive shaft and rotor.
- the EP 2 241 753 A1 and the EP 2 025 934 A1 disclose further motor pump devices.
- the object of the invention is to further improve the above-mentioned units in such a way that, despite their compact design and high specific power, they are thermally advantageous in such a way that they can be used in uninterrupted periodic operation (S6) can be used for continuous operation (S1).
- a motor pump device which is designed as a modular system, achieves an object in this regard according to the feature configuration of patent claim 1.
- a motor-pump device can be constructed in practice for obtaining a large number of pressure combinations.
- the mentioned use of different supply pumps, pump sizes, motors, installation positions, tank lengths etc. results in a very large variety of variants, which depending on the application at hand can be designed for the unit from a thermal point of view such that uninterrupted periodic operation (S6) up to for continuous operation (S1) is possible.
- the exact duty cycle is to be selected depending on the power output of the unit as well as the operating and environmental conditions. that a maximum permissible operating temperature, for example in the form of the oil temperature in the unit, of preferably 80 ° C. is not exceeded.
- a temperature switch can preferably be used in or outside the unit.
- the special features of the motor-pump device are based on the flexible modular system according to the invention in accordance with the features of claim 1, which among other things enables the combination of high and / or low pressure with only one unit. In this way, the implementation of so-called one to two-circuit supply systems is also possible.
- the unit according to the invention can be used both horizontally and vertically and the tank unit in the form of the oil container can be flexibly adjusted to the oil volume required in each case.
- the housing of its tank unit is designed as an extruded profile and is provided with cooling fins along its outer circumference facing the surroundings.
- the desired increased operating mode can be realized in this way.
- additional cooling measures can be avoided, such as attaching a fan, the fan wheel of which is to be driven by the electric motor next to the respective supply pump via a drive shaft, which leads to corresponding losses in the operation of the known aggregates leads.
- an additional oil cooler can be dispensed with in certain applications.
- the in Fig. 1 as a whole from the outside motor pump device, as shown, horizontally and vertically according to the longitudinal sectional view of the Fig. 2 deploy.
- the in the Fig. 2 Motor pump device shown is designed as a modular system and has an electric motor designated as a whole with 10.
- the electric motor 10 can consist of a conventional asynchronous machine with an external stator 12 and an internal rotor 14 (see Fig. 2 ).
- the rotor 14 is connected in a conventional manner to a drive shaft 16 of the electric motor 10, which is rotatably supported at the end in bearing points 18.
- Another third bearing 20 is present between the end bearings 18 and is accommodated in the multi-part motor housing 22 of the electric motor 10 on an inner wall.
- the electric motor 10 can be equipped with or without a fan wheel; here in Fig. 1 and 2nd shown with fan wheel.
- a radial piston pump 24 is installed below the motor housing 22 with a total of three pump elements 26 as shown in FIG Fig. 3 .
- three pistons or pump elements 26 instead of three pistons or pump elements 26, six pistons or pump elements can also be used for the radial piston pump.
- the three or six valve spring-controlled radial piston pump elements 26 mentioned are actuated independently of the direction of rotation by an eccentric drive 28 which is driven by the external electric motor 10, specifically via its drive shaft 16.
- Fig. 3 Pump elements 26 shown in a pump housing in the manner of an annular flange 30 received.
- This ring flange 30 is, as is particularly the case Fig. 2 shows, between the electric motor 10 and a tank unit designated as a whole by 32 of the motor pump device.
- the inside of the tank unit 32 is used for Inclusion of a predeterminable amount of oil fluid.
- a gear pump 34 is integrated within the tank unit 32, the technical structure of which is customary and is therefore no longer shown in detail.
- the gear pump 34 removes, looking in the direction of Fig. 2 seen, on its underside via an extraction nozzle 36 with filter element 45 fluid from the tank unit 32 for further delivery from the unit into a one or two-circuit system of an overall hydraulic system (not shown).
- the radial piston pump 24 also has a suction line 38 with a filter element 39 for the purpose of filtering the oil removed from the tank 32 by means of the radial piston pump 24, which oil is also released from the hydraulic unit to a hydraulic consumer, as described at the beginning.
- the output shaft 42 of the gear pump 34 which in the Fig. 2 is only shown in principle and schematically, is driven by the drive shaft 16 of the electric motor 10 via a so-called Oldham coupling 44.
- the nozzle-like fluid extraction parts including the suction lines 36 and 38, are designed in such a way that fluid extraction from the tank 32 is possible both in a horizontal installation position of the unit as shown in FIG Fig. 1 can take place as well as a vertical elevation of the unit as shown in the Fig. 2 is possible.
- the ventilation filter 40 can be removed ( Fig. 1 , 3rd ).
- the motor pump device can be equipped with radial piston pumps 24 and / or with gear pumps 34 in such a way that a pressure supply for hydraulic single and dual circuit systems is possible, and only in low pressure (LP) or only in high pressure (HD) or combined accordingly according to low pressure (LP) and high pressure (HD).
- LP low pressure
- HD high pressure
- the respective radial piston pump 24 of the high pressure supply and the gear pump 34 used in each case Low pressure supply of a hydraulic circuit should serve.
- this can be of two or four poles, and that is in the Fig. 1
- the unit shown is only intended for pure low pressure applications in continuous operation Fig. 1
- Damping ring 46 shown from the outside between the ring flange 30 and the housing 22 of the electric motor 10 can also be omitted or replaced due to another pump control.
- a single-circuit system can be supplied with high pressure (HD), low pressure (ND), high and low pressure (HN) and with low pressure / low pressure (NN).
- the supply is made with low pressure / low pressure (NN), high pressure / high pressure (HH) or with high / low pressure (HN).
- HH high pressure / high pressure
- HN high / low pressure
- only one radial piston pump 24 can be used as the high pressure pump or only one gear pump 34 as the low pressure pump; otherwise all other components remain, as exemplified in the Fig. 2 shown, received.
- N; NN; NN Only with pure low-pressure variants (N; NN; NN) can a different motor-pump connection be used depending on the application.
- the above-mentioned high pressure pump can supply 700 bar supply pressure at flow rates of around 3 l / minute.
- the low-pressure pump has a higher delivery rate up to, for example, 8.6 l / min at 250 bar or, for example, 20 l / minute at 110 bar supply pressure. If two low pressure supply pumps are combined with one another, one of the pumps can be switched to unpressurized circulation to save energy as required in single circuit operation.
- the pumps can be operated alternately or in parallel in the dual-circuit system (NN; HN; HH). The relevant values are only examples and can be adapted accordingly depending on the application.
- an electrical connection box 50 is provided on the outer circumference of the motor housing 22.
- At least one longitudinal linkage, designated as a whole with 48 and valves, is attached to the pump flange 30.
- a fill level indicator of the container contents can be integrated on the tank base 62 for the horizontal construction and on the tank housing 52 for the vertical construction.
- the tank unit 32 is now shown in more detail. So it shows Fig. 4 the tank unit 32 in the manner of an exploded view with a housing 52 which is designed as an extruded profile, preferably made of aluminum. Along its outer circumference, the housing 52 has axially continuous cooling fins 54 which are an integral part of the extruded profile.
- the cooling fins 54 mentioned are interrupted by two flat profiles 56 and a flange plate 58 on the underside of the housing 52 in the circumferential direction.
- the two flat profiles 56 can be used to carry an unspecified machine plate from the manufacturer and, as a further attachment, a level meter or sensor (not shown).
- the flange plate 58 is used for the horizontal elevation of the unit presented, as exemplified in FIG Fig. 1 is shown.
- the flange plate 58 mentioned is an integral part of the cylindrical housing body 52 of the tank unit 32 and is in the form of a hollow profile, as shown in particular in the diagrams of FIGS 5 and 6 result, designed.
- Two cooling channels 60 run along the tank unit 32 between the flange plate 58 and the cylindrical jacket of the housing 52.
- connection component (tank foot) 62 the stand of the unit as shown in the Fig. 2 can serve or the flange 62 has an attachment in the form of a fill level sensor 66 on the bottom, which then results in a horizontal installation position of the unit, as in Fig. 1 shown, pretends.
- left connection component (tank adapter) 64 carries at its upper right end the filler neck 40 for the tank unit 32 and closes in succession, as in the Fig. 1 shown, to the annular flange 30 with the radial piston pump 24.
- the two flanges 62, 64 have connection points 68, with which a cooling circuit (not shown in more detail) can be implemented, in which, according to the arrow representations, the coolant enters at the connection point 68 of the tank base 62, is then passed on to the two cooling channels 60 and collected by the tank adapter 64, the correspondingly heated cooling liquid leaves the tank unit 32 via the connection point 68. Effective cooling of the tank contents is possible in this way. While the cooling fins 54 shown serve primarily for air and convection cooling of the tank contents, the cooling channels 60 enable integrated liquid cooling for the tank contents of the tank unit 32.
- the cooling medium When using the unit in machine tools, the cooling medium would be useful to use their cooling lubricant, since one Coolant supply as a unit is often already integrated in the machine tool. However, other cooling media such as water, glycol, etc. are also used.
- the cooling medium along the tank profile absorbs the heat of the oil tank and thus also the hydraulic oil that is stored in the tank unit 32 due to the temperature difference.
- the coolant inlet is located at the tank foot 62 and the outlet at the tank adapter 64.
- this cooling process results in a saturation of the oil temperature below the permitted max. Temperature reached. Accordingly, electric motors with an appropriate operating mode are used for the periodic uninterrupted operation up to continuous operation.
- the two thermal Problem areas oil temperature and engine temperature of the hydraulic unit for the two operating modes mentioned solved.
- the hydraulic fluid is cooled very well and higher operating modes and operating times can be achieved with the unit during operation.
- These cooling processes are both horizontal ( Fig. 1 ) as well as in vertical ( Fig. 2 ) Alignment of the unit can be used.
- the through holes 70 on the tank base 62 can also be provided with screw connections (not shown in more detail).
- Fig. 7 a low-pressure single-circuit system
- the gear pump 34 designed as a low-pressure pump feeding into a single supply connection P of the hydraulic single-circuit system, not shown in any more detail.
- the fluid coming from the low-pressure system is returned via the tank connection T to the tank unit 32 for a further removal.
- the removal takes place via the removal nozzle 36 and the low-pressure filter element 45 connected to it, so that the fluid then reaches the suction side of the gear pump 34.
- the connections P, T serve as an interface for the continuation of the fluid to a chaining system of a hydraulic circuit, not shown in detail, which is designed here as a single-circuit system.
- the gear pump 34 also delivers the fluid on its pressure side to the supply connection P of the single-circuit system.
- a radial piston pump 24 is used for a high-pressure supply to the single-circuit system, so that the gear pumps 34 intended for the low-pressure range are not provided within the unit.
- the radial piston pump 24 according to the Fig. 10 conveys pressurized fluid into the pressure supply connection P with only one supply line 72.
- the one supply connection P1 is supplied via a supply line 72 of the high-pressure radial piston pump 24, whereas the low-pressure gear pump 34 supplies the further pressure supply connection P2 with pressure that can be predetermined by pressure fluid.
- This is via the pressure supply connections P1, P2 implemented a two-circuit system, one with high pressure (P1), one with low pressure (P2).
- each supply connection P1, P2 being assigned its own supply line 72, which is supplied by the radial piston pump 24.
- a number of pistons, for example three pistons or pump elements 26 can be assigned to the circuit with the supply connection P1, and the remaining pistons or pump elements 26 then supply the second circuit via the further one Supply connection P2.
- the unit appears through a clear adjustment of transitions of the components mentioned in a clearly structured form as a high quality product with a clear visual order, which helps assembly and repair work easier.
- a very flexible modular system with a uniform structure is available.
- it can be more cost-effective to create an assembly with a radial piston pump 24 and a gear pump 34 and, depending on requirements, only ever one of the two pumps 24, 34 or both pumps 24, 34 in operation take to design each as a separate high or low pressure unit, which then only has a specially adapted supply pump.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Description
Die Erfindung betrifft eine Motor-Pumpenvorrichtung.The invention relates to a motor pump device.
Solche Vorrichtungen werden fachsprachlich auch als Motor-Pumpen-Aggregate bezeichnet und dienen vorrangig der Versorgung hydraulischer Kreisläufe mit Hydrauliköl vorgebbaren Druckes. Die genannten Aggregate zeichnen sich regelmäßig durch eine hohe Leistungsdichte bei kleinen Abmessungen aus und können für die angesprochene Druckölversorgung ölhydraulischer Anlagen diesen als funktionsfähige Baueinheit beigestellt werden.Such devices are also referred to in technical terms as motor-pump units and are primarily used to supply hydraulic circuits with hydraulic oil of predeterminable pressure. The units mentioned are regularly characterized by a high power density with small dimensions and can be provided as a functional unit for the pressurized oil supply to oil-hydraulic systems.
Ein solches hydraulisches Kompaktaggregat ist beispielhaft in der
Die
Die
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, die vorstehend genannten Aggregate dahingehend weiter zu verbessern, dass trotz ihrer kompakten Bauweise und der hohen spezifischen Leistung diese derart thermisch vorteilhaft ausgebildet sind, dass sie im ununterbrochenen periodischen Betrieb (S6) bis hin zum Dauerbetrieb (S1) zwanglos eingesetzt werden können.On the basis of this prior art, the object of the invention is to further improve the above-mentioned units in such a way that, despite their compact design and high specific power, they are thermally advantageous in such a way that they can be used in uninterrupted periodic operation (S6) can be used for continuous operation (S1).
Eine dahingehende Aufgabe löst eine Motor-Pumpenvorrichtung, die als Baukastensystem konzipiert ist, gemäß der Merkmalsausgestaltung des Patentanspruchs 1.A motor pump device, which is designed as a modular system, achieves an object in this regard according to the feature configuration of patent claim 1.
Nach dem Anspruch 1 besteht die erfindungsgemäße Motor-Pumpenvorrichtung mindestens aus
- einem Elektromotor, wobei ein Rotor des Elektromotors mit einer Antriebswelle desselben verbunden ist, die endseitig in Lagerstellen drehbar gelagert ist, und wobei zwischen den endseitigen Lagerstellen noch eine weitere dritte Lagerstelle vorhanden ist, die in einem mehrteiligen Motorgehäuse des Elektromotors an einer Innenwand aufgenommen ist,
- einer von dem Elektromotor jeweils antreibbaren Radialkolbenpumpe, die vorzugsweise einer Hochdruckversorgung dient, und/oder einer Zahnradpumpe, die vorzugsweise einer Niederdruckversorgung dient,
- einer Tankeinheit, und
- Anbauteilen, wie Ventilen in Längsverkettung und Füllstandsmesser, wobei für eine Realisierung eines hydraulischen Ein- oder Mehrkreissystems,
- jede zum Einsatz kommende Versorgungspumpe einen eigenen Versorgungsanschluss für den jeweiligen Kreis des zum Einsatz kommenden Systems aufweist, oder
- mehrere eingesetzte Versorgungspumpen in einen gemeinsamen Versorgungsanschluss fördern, oder
- eine einzelne Versorgungspumpe, die vorzugsweise der Hochdruckförderung dient, mehrere Versorgungsstränge aufweist, die jeweils an einen Versorgungsanschluss angeschlossen sind.
- an electric motor, wherein a rotor of the electric motor is connected to a drive shaft of the same, which is rotatably supported in bearings at the end, and between the bearings at the end there is another third bearing which is accommodated in a multi-part motor housing of the electric motor on an inner wall,
- a radial piston pump which can be driven by the electric motor and which preferably serves a high pressure supply and / or a gear pump which preferably serves a low pressure supply,
- a tank unit, and
- Add-on parts, such as valves in longitudinal linkage and level meter, whereby for the implementation of a hydraulic single or multi-circuit system,
- each supply pump used has its own supply connection for the respective circuit of the system used, or
- Pump several used supply pumps into a common supply connection, or
- a single supply pump, which is preferably used for high-pressure delivery, has a plurality of supply lines, each of which is connected to a supply connection.
Mit den Merkmalen des Patentanspruchs 1 in seiner Gesamtheit lässt sich eine Motor-Pumpenvorrichtung für den Erhalt einer Vielzahl von Drucckombinationen in der Praxis aufbauen. Durch die angesprochene Verwendung unterschiedlicher Versorgungspumpen, Pumpengrößen, Motoren, Einbaulagen, Tanklängen etc., ergibt sich eine sehr hohe Variantenvielfalt, die je nach vorliegendem Anwendungsfall für das Aggregat aus thermischer Sicht derart ausgelegt werden kann, dass ein ununterbrochener periodischer Betrieb (S6) bis hin zum Dauerbetrieb (S1) möglich ist. Die jeweils genaue Einschaltdauer ist dabei in Abhängigkeit von der Abgabeleistung des Aggregats sowie den Betriebs- und Umgebungsbedingungen derart zu wählen, dass eine maximal zulässige Betriebstemperatur, beispielsweise in Form der Öltemperatur im Aggregat, von vorzugsweise 80°C nicht überschritten wird. Zur selbständigen Überwachung der Betriebstemperatur kann vorzugsweise ein Temperaturschalter in oder außerhalb des Aggregats eingesetzt werden.With the features of claim 1 in its entirety, a motor-pump device can be constructed in practice for obtaining a large number of pressure combinations. The mentioned use of different supply pumps, pump sizes, motors, installation positions, tank lengths etc. results in a very large variety of variants, which depending on the application at hand can be designed for the unit from a thermal point of view such that uninterrupted periodic operation (S6) up to for continuous operation (S1) is possible. The exact duty cycle is to be selected depending on the power output of the unit as well as the operating and environmental conditions. that a maximum permissible operating temperature, for example in the form of the oil temperature in the unit, of preferably 80 ° C. is not exceeded. For independent monitoring of the operating temperature, a temperature switch can preferably be used in or outside the unit.
Die Besonderheiten der Motor-Pumpenvorrichtung beruhen auf dem erfindungsgemäßen flexiblen Baukastensystem gemäß der Merkmalsausgestaltung des Patentanspruchs 1, welches unter anderem die Kombination von Hoch- und/oder Niederdruck mit nur einem Aggregat ermöglicht. Dergestalt ist auch die Realisierung von sog. Ein- bis zu Zwei-Kreisversorgungssystemen möglich. Das erfindungsgemäße Aggregat kann sowohl horizontal als auch vertikal eingesetzt werden und die Tankeinheit in Form des Ölbehälters kann flexibel auf das jeweils benötigte Ölvolumen eingestellt werden.The special features of the motor-pump device are based on the flexible modular system according to the invention in accordance with the features of claim 1, which among other things enables the combination of high and / or low pressure with only one unit. In this way, the implementation of so-called one to two-circuit supply systems is also possible. The unit according to the invention can be used both horizontally and vertically and the tank unit in the form of the oil container can be flexibly adjusted to the oil volume required in each case.
Für die vorstehend genannten Betriebsarten (S1 und S6) hat es sich als vorteilhaft erwiesen, bei einer Motor-Pumpenvorrichtung vorzusehen, dass das Gehäuse ihrer Tankeinheit als Strangpressprofil ausgebildet entlang ihres der Umgebung zugewandten Außenumfangs mit Kühlrippen versehen ist. Dank des vorzugsweise außenliegenden Elektromotors und dem angesprochenen berippten Tankaußenprofil, vorzugsweise aus Aluminiummaterial hergestellt, ist die erwünscht erhöhte Betriebsart dergestalt realisierbar. Insbesondere bei Einsatz eines integrierten Kühlsystems über mindestens einen Kühlkanal im Stranggussprofil der Tankeinheit lassen sich zusätzlich Kühlmaßnahmen vermeiden, wie beispielsweise das Anbringen eines Lüfters, dessen Lüfterrad über eine Antriebswelle von dem Elektromotor neben der jeweiligen Versorgungspumpe mit anzutreiben ist, was zu entsprechenden Verlusten im Betrieb der bekannten Aggregate führt. Weiterhin kann somit in bestimmten Anwendungsfällen auf einen zusätzlichen Ölkühler verzichtet werden.For the above-mentioned operating modes (S1 and S6), it has proven to be advantageous in a motor pump device to provide that the housing of its tank unit is designed as an extruded profile and is provided with cooling fins along its outer circumference facing the surroundings. Thanks to the preferably external electric motor and the addressed ribbed tank outer profile, preferably made of aluminum material, the desired increased operating mode can be realized in this way. In particular, when using an integrated cooling system via at least one cooling channel in the continuous casting profile of the tank unit, additional cooling measures can be avoided, such as attaching a fan, the fan wheel of which is to be driven by the electric motor next to the respective supply pump via a drive shaft, which leads to corresponding losses in the operation of the known aggregates leads. Furthermore, an additional oil cooler can be dispensed with in certain applications.
Weitere vorteilhafte Ausführungsformen der erfindungsgemäßen Lösung sind Gegenstand der weiteren Unteransprüche. Im Folgenden wird die aggregatartige Motor-Pumpenvorrichtung anhand der Zeichnung näher erläutert. Dabei zeigen in prinzipieller und nicht maßstäblicher Darstellung die
- Fig. 1
- in perspektivischer Schrägansicht die Motor-Pumpenvorrichtung als Ganzes;
- Fig. 2
- in der Art eines Längsschnitts eine Seitendarstellung auf die Motor-Pumpenvorrichtung nach der
Fig. 1 in vertikal aufgeständerter Bauweise; - Fig. 3
- eine Ansicht durch die Motor-Pumpenvorrichtung längs der Linie III - III in
Fig. 2 ; - Fig. 4 bis 6
- in verschiedenen Darstellungen Teile einer Tankeinheit, wie sie für die Motor-Pumpenvorrichtung nach den
Fig. 1 und2 eingesetzt ist; und - Fig. 7 bis 12
- in der Art hydraulischer Schaltplandarstellungen verschiedene Einsatzmöglichkeiten der Motor-Pumpenvorrichtung für verschiedene hydraulische Ein- und Zweikreissysteme.
- Fig. 1
- in perspective oblique view the motor-pump device as a whole;
- Fig. 2
- in the manner of a longitudinal section a side view of the motor pump device according to the
Fig. 1 in a vertical construction; - Fig. 3
- a view through the motor pump device along the line III - III in
Fig. 2 ; - 4 to 6
- in different representations parts of a tank unit, as for the motor pump device according to the
Fig. 1 and2nd is inserted; and - 7 to 12
- In the manner of hydraulic circuit diagrams, various possible uses of the motor-pump device for various hydraulic single and double-circuit systems.
Die erfindungsgemäße Motor-Pumpenvorrichtung eignet sich als Hoch-Niederdruck-Aggregat besonders für:
- Pressen und Umformmaschinen,
- Spannen, Klemmen, Lösen, Indexieren an Werkzeugmaschinen,
- hydraulische Werkzeuge als Antriebsaggregate,
- Spannhydraulik,
- Betätigung von Hebe- und Schwenkeinrichtungen,
- Hilfs- und Nebenantriebe,
- andere kundenspezifische Anwendungen.
- Presses and forming machines,
- Clamping, clamping, releasing, indexing on machine tools,
- hydraulic tools as drive units,
- Clamping hydraulics,
- Actuation of lifting and swiveling devices,
- Auxiliary and auxiliary drives,
- other custom applications.
Für die dahingehenden Anwendungen lässt sich die in
In Blickrichtung auf die
Ferner sind die in der
Die Abtriebswelle 42 der Zahnradpumpe 34, die in der
Was sich noch näher aus den
Insbesondere kann für ein Einkreissystem dieses mit Hochdruck (HD), Niederdruck (ND), Hoch- und Niederdruck (HN) und mit Niederdruck/Niederdruck (NN) versorgt werden. Bei einem Zweikreissystem erfolgt die Versorgung mit Niederdruck/Niederdruck (N-N), Hochdruck/Hochdruck (H-H) oder mit Hoch-/Niederdruck (H-N). Je nach angesprochener Versorgungsart mit Hochdruck oder mit Niederdruck kann gemäß dem hier vorgestellten Baukastensystem auch nur eine radiale Kolbenpumpe 24 als Hochdruckpumpe oder nur eine Zahnradpumpe 34 als Niederdruckpumpe zum Einsatz kommen; ansonsten bleiben alle anderen Baukomponenten, wie beispielhaft in der
Wie sich aus der
In den
Wie sich des Weiteren aus der
Wie sich aus der
Der Kühlflüssigkeitseintritt befindet sich am Tankfuß 62 und der Austritt am Tankadapter 64. Durch dieses Kühlverfahren wird in bestimmten Anwendungsfällen eine Sättigung der Öltemperatur unterhalb der zugelassenen max. Temperatur erreicht. Für den periodischen ununterbrochenen Betrieb bis hin zum Dauerbetrieb werden dementsprechend Elektromotoren mit angemessener Betriebsart eingesetzt. Somit werden die beiden thermischen Problemstellen (Öltemperatur und Motortemperatur) des Hydraulikaggregates für die beiden genannten Betriebsarten gelöst.The coolant inlet is located at the
Aufgrund der integrierten Flüssigkeitskühlung sowie einer erhöhten Oberfläche durch die Kühlrippen 54 und einer guten Wärmeleitung durch Einsatz des Werkstoffes Aluminium für das Gehäuse 52 liegt eine sehr gute Kühlung des Hydraulikfluids vor und es können dergestalt höhere Betriebsarten und Einschaltdauern mit dem Aggregat im Betrieb erreicht werden. Diese Kühlverfahren sind sowohl in horizontaler (
Im Folgenden werden nunmehr die einzelnen Systemlösungen anhand von Beispielen nach den
So zeigt die
Die Lösung nach der
Bei der Ausführungsform nach der
Bei der Lösung nach der
Bei der Ausführungsform nach der
Bei der Lösung nach der
Wie die
Claims (13)
- Motor pump device, designed as a modular system, consisting of at least- one electric motor (10), wherein a rotor (14) of the electric motor (10) is connected to a drive shaft (16) of said electric motor, the ends of said drive shaft being rotatably mounted in bearing positions (18), and wherein another third bearing position (20) is provided between the end bearing positions (18), said third bearing position being accommodated on an inner wall in a multi-part motor housing (22) of the electric motor (10),- one radial piston pump (24), which can be respectively driven by the electric motor (10), said pump preferably providing a high pressure supply, and/or a gear pump (34), which preferably provides a low pressure supply,- one tank unit (32), and- add-on parts such as valves (48) in a longitudinal concatenation and a filling level gauge (66),wherein, to construct a hydraulic single or multiple circuit system.- each supply pump (24, 34) used has its own supply connection (P1, P2) for the respective circuit of the system used, or- a plurality of supply pumps (24, 34) used feed into a shared supply connection (P), or- a single supply pump (24), which preferably provides a high pressure feed, has a plurality of supply lines (72), which are each connected to a supply connection (P1, P2).
- Motor pump device according to claim 1, characterised in that the respective radial piston pump (24) is accommodated between the electric motor (10) and the tank unit (32).
- Motor pump device according to either claim 1 or claim 2, characterised in that the respective gear pump (34) is accommodated in the tank unit (32).
- Motor pump device according to any one of the preceding claims, characterised in that the electric motor (10), with the shared drive shaft (16), drives both the respective radial piston pump (24) and the gear pump (34).
- Motor pump device according to any one of the preceding claims, characterised in that the electric motor (10) has the motor housing (22) on the outside, said motor housing being connected to the environment and the pump housing (30) of the supply pump (24, 34) being connected to said motor housing, a housing (52) of the tank unit being connected in turn to said pump housing.
- Motor pump device according to any one of the preceding claims, characterised in that the electric motor (10), the supply pump (24, 34) and the tank unit (32) are the main components of the modular system.
- Motor pump device according to any one of the preceding claims, characterised in that the electric motor (10) is an asynchronous machine with an external stator (12) and the internal rotor (14).
- Motor pump device according to any one of the preceding claims, characterised in that a longitudinal valve arrangement (modular stacking system) is fixed to the pump flange (30).
- Motor pump device according to any one of the preceding claims, characterised in that the pistons (26) of the radial piston pump (24) can be driven by an eccentric drive (28) of the drive shaft (16) of the electric motor (10) and/or the output shaft (42) of the gear pump (34) is connected to the drive shaft (16) of the electric motor (10) via an Oldham coupling (44).
- Motor pump device according to any one of the preceding claims, characterised in that the housing (52) of the tank unit (32), which is designed as an extruded profile, is furnished with cooling fins (54) along its outer circumference facing the environment.
- Motor pump device according to claim 10, characterised in that the housing (52) of the tank unit (32) is designed as a cylindrical body and in that a flange plate (58) is arranged along its outer circumference, said flange plate transitioning into the cylindrical body in one piece, and in that said flange plate (58) allows a motor pump device to be installed in a horizontal installation position and a tank base (62) to be installed in a vertical installation position.
- Motor pump device according to claim 11, characterised in that at least one cooling channel (60) is provided as an integral part of the jacket of the housing (52) of the tank unit (32), preferably at the transition point between the flange plate (58) and the cylindrical jacket of the housing (52).
- Motor pump device according to either claim 11 or claim 12, characterised in that the housing (52) of the tank unit (32) comprises, on the one hand, the tank base (62) for holding the motor pump device in a vertical orientation and, on the other hand, another tank adapter (64) for connecting the ring flange (30) to the respective radial piston pump (24).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016010669.7A DE102016010669A1 (en) | 2016-08-29 | 2016-08-29 | Motor-pump device |
PCT/EP2017/001026 WO2018041401A1 (en) | 2016-08-29 | 2017-08-29 | Motor pump device |
Publications (3)
Publication Number | Publication Date |
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EP3504433A1 EP3504433A1 (en) | 2019-07-03 |
EP3504433B1 true EP3504433B1 (en) | 2020-04-22 |
EP3504433B2 EP3504433B2 (en) | 2024-01-17 |
Family
ID=59791023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17761804.8A Active EP3504433B2 (en) | 2016-08-29 | 2017-08-29 | Motor pump device |
Country Status (3)
Country | Link |
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EP (1) | EP3504433B2 (en) |
DE (1) | DE102016010669A1 (en) |
WO (1) | WO2018041401A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018001725A1 (en) * | 2018-03-05 | 2019-09-05 | Hydac Fluidtechnik Gmbh | connection device |
DE102018111059A1 (en) * | 2018-05-08 | 2019-11-14 | Speck-Kolbenpumpenfabrik Otto Speck Gmbh & Co Kg | DRIVE FOR A PISTON PUMP OR COMPRESSOR |
FR3091561B1 (en) * | 2019-01-03 | 2021-05-28 | Automatisation Et Controle Du Serrage | HYDRAULIC MICROCENTRAL |
DE102019200703A1 (en) | 2019-01-21 | 2020-07-23 | Hawe Hydraulik Se | Sensor unit, fluid unit with sensor unit and method for measuring parameters of a fluid |
DE102019206326A1 (en) * | 2019-05-03 | 2020-11-05 | Hawe Hydraulik Se | Pump housing with coolant channel and pump unit |
DE102019212074A1 (en) * | 2019-08-13 | 2021-02-18 | Robert Bosch Gmbh | Motor-hydromachine unit for attachment to a hydraulic unit |
CN112032015A (en) * | 2020-09-03 | 2020-12-04 | 王萍 | Step-by-step driving type efficient water pump |
CN115681067A (en) * | 2022-09-30 | 2023-02-03 | 北京精密机电控制设备研究所 | Coaxial integrated servo motor pump with drive control function |
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Also Published As
Publication number | Publication date |
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EP3504433A1 (en) | 2019-07-03 |
DE102016010669A1 (en) | 2018-03-01 |
WO2018041401A1 (en) | 2018-03-08 |
EP3504433B2 (en) | 2024-01-17 |
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