EP2241753A1 - Motor pump unit - Google Patents
Motor pump unit Download PDFInfo
- Publication number
- EP2241753A1 EP2241753A1 EP09005384A EP09005384A EP2241753A1 EP 2241753 A1 EP2241753 A1 EP 2241753A1 EP 09005384 A EP09005384 A EP 09005384A EP 09005384 A EP09005384 A EP 09005384A EP 2241753 A1 EP2241753 A1 EP 2241753A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer housing
- support plate
- motor
- motor pump
- pump unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 210000002445 nipple Anatomy 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000010792 warming 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
- 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
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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
- F04B23/02—Pumping installations or systems having reservoirs
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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
- 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
Definitions
- the invention relates to a motor pump unit specified in the preamble of claim 1. Art.
- motor pump units for example, in terms of performance, the filling volume, the useful volume, the assembly with pump elements, the tik Schemee, the dimensions of the items and the like. Different. This leads to a need for a modular design that can be created with as few simple basic components, logistically simple, and in terms of storage well manageable different motor pump units in a universal manner.
- the support plate is screwed to the heat transfer ring made of a light metal alloy outer housing.
- the support plate is prepared for mounting a plurality of radial piston pump elements, which are connected on the pressure side via a separately mounted from the support plate pressure collecting annular channel with the arranged in the outer housing hydraulic connection area. Since the support plate is arranged at a relatively short distance from the open end of the outer housing, with an outer housing type no assembly of the motor pump unit with a gear pump element or with larger radial piston pump elements is possible. Rather, then another outer housing as well as another support plate is required, and also the pressure-side connection of the respective pump element with the outer connection area must be tailored.
- the end EP-A-0940578 known motor pump unit has a molded into the solid outer housing inner mounting flange for a plurality of distributed around the motor shaft arranged radial piston pump elements, which are connected via a separately formed and installed between the pump elements Druckringsammelkanal with the connection area of the outer housing.
- the pressure channel must be redesigned and installed become.
- the electric motor is inserted with an encapsulation from above into the outer housing and fixed to the flange of the outer housing.
- a known motor pump unit has a basic type of cast outer housing with cast-technically integrated support plate.
- the support plate is subjected to various processing steps together with the outer housing in order to assemble different pump element assemblies (radial piston pump elements and / or gear pump elements, single-circuit, dual-circuit).
- Radial piston pump elements are mounted with steel blocks and steel liners and connected to the pressure channel internally formed in the support plate and maintaining a steel lining; Gear pump elements, however, directly to the pressure channel. In the case of several radial piston pump elements, only one is connected to the pressure channel via the steel block, while the others are connected to the one steel block via separately installed collective power.
- a second support plate is mounted with spacer elements containing pressure channels on the support plate of the outer housing, and connected via a steel pipe section with a second connection channel with hydraulic connection area.
- motor pump unit is used in the open end of the outer housing solid ground for storage of the motor shaft and the Assembly of different types of pump elements.
- the bottom has the external connection region and internal pressure channels, which are connected to mounting regions for, for example, radial piston pump elements or a gear pump element.
- the different pump elements can either be mounted or in combination.
- the gear pump element is either exposed to the ground or in a flanged on the ground additional container.
- Different gear pump elements of a construction series can be optionally mounted.
- the floor can be built like a box for different embodiments of motor pump units.
- the invention has for its object to provide a motor pump unit of the type mentioned above, which consists of a few, easy to produce and assemble components and is modular expandable or universally modular manner expandable in different embodiments.
- the simply formed support plate is mounted in the outer housing, on which the respective pump element is arranged and connected via the arranged in the support plate pressure channel with the externally accessible connection area of the outer housing via the pipe nipple.
- the pipe nipple is part of the pressure channel and connects the connection area in the outer housing with the pressure channel opening in the support plate. It is not required separately manufactured or installed pressure channel, and designed the pressure-resistant connection between the terminal portion of the outer housing and the pressure channel in the support plate by means of the pipe nipple easy.
- the motor pump unit is modular expandable or modifiable by different motor pump elements and / or different support plates are installed in a basic type of the outer housing.
- the different support plates are the same in terms of their mountability in the outer housing and its connection to the connection area and differ only in terms of Montier Schemee for different pump elements and optionally the pressure channel, the pressure channel mouth can also be standardized and tuned to the pipe nipple. This facilitates storage and avoids logistical problems, because the basic type of the outer housing with the different support plates and the suitable pump elements for these simple, space-saving and clearly prepared and can be combined.
- the pipe nipple eliminates the need for, when mounted on the outer housing and mounted in the outer housing Tray plate tailor the pressure channel and to have to lead into the outer terminal area, however, in a connectable to the outer housing intermediate plate in which the Montier Schemee for the pump elements and the pressure channel are preformed, and which also has the connection area, for different embodiments of motor pump units a variety to have to have such expensive and expensive to produce intermediate plates.
- the outer housing formed with the connection region can be produced as a basic type in large numbers in a cost-effective and dimensionally accurate manner, for example, from light metal or a light metal alloy by means of a chill casting process.
- the pipe nipple is suitably sealed at both ends and removably mounted to the outside from the connection area of the outer housing.
- the pipe nipple contributes to easy installation of the respective motor pump unit and ease of maintenance.
- the universally usable for various embodiments of the motor pump assembly pipe nipple has expedient at both end outer circumferential grooves each for a seal and possibly a seal support ring, on the one hand a simple assembly by inserting the pipe nipple and on the other hand the required pressure resistance even at the high pressure, the radial piston pump elements generate, ensure.
- the pipe nipple can be installed so that an outboard end in the connection area is approximately flush, while its other end engages with an appropriate coverage in the pressure channel mouth of the support plate.
- the coverage should expediently have a dimension that corresponds approximately to the outer diameter of the pipe nipple.
- the pipe nipple used with seals also compensates for any occurring Relative movements between the plate and the inner wall of the outer housing, for example caused by vibrations and / or thermal influences.
- the pressure channel may be a simple straight bore with a 90 ° branch channel to the pressure outlet of the gear pump.
- the branch channel opens at a suitable point in the mounting area on one side of the support plate. The mounting area of this support plate fits different gear pump elements.
- radial piston pump elements of the pressure channel is formed in the interior of the support plate as Drucksammelringkanal comprising a connection to the pressure port mouth and a plurality of opening into a mounting surface for radial piston pump elements puncture channels.
- the mounting surface may generally be prepared for a larger number of radial piston pumping elements. Unused stitch channels are then blocked.
- the hole pattern for mounting the respective support plate in the outer housing may be the same among the various, optionally usable support plates, as well as possibly the passage for a pump shaft and a receptacle for a pump shaft bearing.
- these structures may differ in the various types of support plates optionally usable, since the bearing loads to be absorbed by the support plate in a gear pump element are different from those which occur in the case of a plurality of radial piston elements usually driven by an eccentric. Pump elements occur.
- the type of support plate intended for such pump elements is made of steel, whereas the types of support plates intended for gear pump elements consist, for example, of light metal or a light metal alloy.
- the support plates may be castings, machined parts or inexpensively prefabricated moldings.
- the respective support plate in the outer housing may be a flat annular surface, or distributed in the circumferential direction have regular mounting zones for mounting screws.
- the mounting area for the pumping elements may be different from the mounting area for gear pumping for radial piston pumping elements, and, suitably, a gear pumping element mounting area is a surface which allows the attachment of different types of gear pumping elements selectively.
- a heat transferring ring is integrally formed with the inner wall of the outer housing, which contains at least one oil passage, so that the stored oil in the reservoir can circulate. Further, the heat transferring forms a Statorstecksitz for the stator of the electric motor.
- additional ribs may be provided adjacent to the heat transferring ring. The ribs can also be used on one side of the heat transfer ring to form the Montier Suitees for each support plate.
- the connecting channel in which the pipe nipple is introduced, located at a considerable distance from the open end of the outer housing. This distance can be a multiple of the plate thickness and is chosen so that there is sufficient space for pump elements of different heights and they do not project beyond the open end of the outer housing.
- an electrical connection area or connection box of the motor pump unit is arranged.
- the basic type of outer housing determines the filling volume and the useful volume with sealing lids attached directly to the two open ends of the outer housing.
- a filling volume for example, 12.0 l
- a useful volume of, for example, 5.0 l can then be achieved.
- an extension housing is installed between the outer housing and at least one closure lid.
- an extension to a filling volume of 22.0 l and a useful volume of 14.0 l can be achieved with the same outer housing.
- a further identical outer housing of the basic type is installed for expansion, so that, for example, a dual-circuit pump system with the same or different pump element configurations is created which shares the filling volume and useful volume.
- a cooling fan is mounted on at least one closure lid, which has its own drive motor and provides with ribbed structures outside of the outer housing or on the extension housing for a more intense heat dissipation.
- the support plates TP1, TP2 differ from each other by individual adaptation to the mounted pump elements P, wherein gear pump elements Z1, Z2 and radial piston pump elements RK different specifications, designs, power levels and the like.
- gear pump elements Z1, Z2 and radial piston pump elements RK different specifications, designs, power levels and the like.
- an inserted pipe nipple N is used to form a pressure channel K from the respective installed pump element P to an externally accessible connection area B of the outer housing 1.
- the motor pump unit A in Fig. 1 has a filling volume of about 12.0 l and a useful volume of about 5.0 I.
- the outer housing 1 is for example a light metal Kokillengussteil (aluminum or aluminum alloy) with an outside at least partially ribs 2 and a largely smooth or ribbed also inner wall 7 and open ends 3, 4, on which the closure cover 5, 6 are mounted.
- a heat transfer ring 8 is provided, which defines a Statorstecksitz 9 for a stator 20 of the electric motor E and on which the Statorstecksitz 9 facing away from a Montier Scheme 10 for the respective support plate TP1, TP2 is provided. At least in the area of the heat transfer ring 8 additional ribs 11 may be provided (see also Fig. 2 ).
- the in Fig.1 shown type of support plate TP1 is intended for mounting at least one gear pump element Z1 by means of fastening screws 22 and has an overhead example annular mounting area 12 for mounting in the mounting area 10 (with a corresponding hole pattern for mounting screws 28) and on the opposite side a flat Montier Society 14 for at least one Type of gear pump element Z1.
- the support plate TP1 has an outer edge 13 which is spaced from the inner wall 7 of the outer housing 1 when the support plate TP1 is mounted in the outer housing 1.
- the pressure channel 8 is defined by an internal, for example radial bore 15 and one of them branching off at 90 ° to the mounting region 14 branch channel 16, wherein the bore 15 leads to a pressure port mouth 25 with a slightly larger inner diameter, which opens into the outer edge 13 and is aligned with a connection channel 26 in the connection region B of the outer housing 1 in the mounting position of the support plate TP1.
- a central passage 17 'for a motor shaft 19 is formed adjacent to a bearing seat 17 for a motor shaft bearing 18.
- the other end of the motor shaft 19 is mounted in a shaft bearing 21 at the upper end of the stator adjacent to the closure lid 5.
- connection region B is located at a distance from the open end 4 of the outer housing 1.
- a widening 27 may be formed, in which an outboard collar of the pipe nipple N engages and limits the insertion depth.
- From the inner wall 7 may be provided in the direction of the outer edge 13 of the support plate TP1 extending or contacting this skirt 29.
- the pipe nipple N is a straight pipe section and has in both end regions outer circumferential grooves 26 for each seal and optionally a support ring.
- the pipe nipple N is inserted from the outside of the outer housing in the connection channel 24, with its end approximately flush with the connection area B and received at the other end with a cover in the pressure channel mouth 25, wherein the Dimension of the overlap, for example, corresponds approximately to the outer diameter of the pipe nipple N.
- an electrical connection region 23 for example a terminal box, may be provided on the outer housing.
- the outer housing 1 defines with the closure lids 5, 6 a certain filling volume of an oil reservoir R, for example in Fig. 1 a filling volume of about 12.0 I with a useful volume of about 5.0 I.
- a filling volume of about 12.0 I with a useful volume of about 5.0 I.
- the Fig. 2 can be seen in the direction of the open end 4 of the outer housing 1, that the support plate TP1 is fixed centrally with, for example, five screws 28, and that the mounting portion 14 for the gear pump element Z1 is an approximately rectangular flat surface on which the gear pump element Z1 is slightly eccentric is fixed with the mounting screws 22.
- the lower part of the oil reservoir R communicates with the upper part through a connection opening in the heat transferring ring 10.
- the ribs 11 are, for example, radial ribs.
- a cooling fan L is indicated in dashed lines for an alternative embodiment of a motor pump unit A, which has its own drive motor M and thus can be driven independently of the electric motor E, taking advantage of the enlarged surface of the ribs 2 from the heat transferring ring 8 and the outer housing Dissipate 1 outwardly conducted heat.
- Fig. 3 also shows the connection channel 24 in the connection region B and the pipe nipple N mounted there, which connects the connection region B with the pressure channel K in the respectively mounted support plate TP1.
- the embodiment of the motor pump unit A in Fig. 4 is different from that of Fig. 1-3 in that the pump element P1 is opposite to the pump element P in the Fig. 1-3 larger and / or more efficient gear pump element Z2 is that on the support plate TP1 or a correspondingly adapted, other support plate TP1 'mounted is.
- the connection region of the motor shaft 19 to the gear pump element Z2 can be designed somewhat differently.
- the outer housing 1, the pipe nipple N and the electric motor E correspond z. B. those of the preceding figures.
- a plurality of pump elements P are mounted on another support plate TP2, namely, for example, any number of radial piston pump elements RK, which are arranged in a common plane and driven by an eccentric 31 on the motor shaft 19.
- the support plate TP2 differs from the support plate TP1 of the preceding figures with at least approximately the same outer diameter of the outer edge 13 by a larger, substantially constant thickness and another design of the pressure channel K and the Montier Schemees 14 'for the pump elements P.
- the pressure channel K is in this case, for a plurality of radial piston pump elements, a pressure collecting ring channel 32, which is transferred into the pressure channel mouth 25 and has a plurality of branch channels 33 opening into the mounting region 14 '.
- the pressure channel mouth 25 is also here above the skirt 29 of the outer housing 1 via the pipe nipple N with the connection channel 24 in the connection region B connected.
- the passage area and bearing area for the motor shaft can also be designed specifically.
- the support plate TP1, TP1 ' may be a molded part made of a light metal or a light metal alloy (aluminum) because the pressure of the gear pump element is less than the pressure generated by radial piston pump elements.
- the support plate TP2 is made of steel. The mutually different support plates TP1, TP2 are easy to manufacture and easy to install parts of a kit for modular creation of different embodiments of motor pump units A.
- Fig. 5 is the lower open end 4 of the outer housing 1 (the basic type of the outer housing) closed by the closure lid 6.
- the motor pump unit A in Fig. 5 an attached to the upper open end 3 of the outer housing 1 extension part 30, which is closed on the upper side by the closure lid 5.
- the filling volume and the useful volume are extended, for example to 22.0 l and 15.0 l.
- expansion stage of a motor pump unit A either according to Fig. 1 .
- Fig. 4 or Fig. 5 may be placed instead of the extension section 30 or additionally a second outer housing 1, so that the motor pump unit A is a dual-circuit pump unit, wherein the two pump circuits share the oil reservoir R together.
- one pump stage may be equipped with radial piston pump elements, and the other with a gear pump element, or vice versa.
- only gear pump elements or only radial piston pump elements could be used in the motor pump unit, possibly different power levels or in different numbers for the pump stages.
- the height of the motor pump unit according to Fig. 1 with the attached cap about 425 mm with a housing outer width of about 245 mm, while the housing length of the embodiment of Fig. 5 can be about 675 mm.
- a basic type of pipe nipple N is used for the various embodiments.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Die Erfindung betrifft ein Motorpumpenaggregat der im Oberbegriff des Patentanspruchs 1 angegebenen Art.The invention relates to a motor pump unit specified in the preamble of
Vielfältige beispielsweise Anwendungsgebiete solcher Motorpumpenaggregate sind die mobile Hochdruckhydraulik, Werkzeugmaschinen, tragbare oder mobile Hydraulikgeräte, Sonnenstand-Nachvorrichtungen von Solargeneratoren, oder dgl. Dabei gibt es eine große Palette solcher Motorpumpenaggregate, die sich beispielsweise hinsichtlich der Leistung, des Füllvolumens, des Nutzvolumens, der Bestückung mit Pumpenelementen, der Einsatzdruckbereiche, der Abmessungen der Einzelteile und dgl. unterscheiden. Daraus leitet sich Bedarf nach einer Modularbauweise ab, die mit möglichst wenigen, einfachen Grundkomponenten, logistisch einfach, und hinsichtlich der Lagerhaltung gut beherrschbar unterschiedliche Motorpumpenaggregate in universeller Weise erstellen lässt.Diverse, for example, fields of application of such motor pump units are mobile high-pressure hydraulics, machine tools, portable or mobile hydraulic devices, sun-state Nachvorrichtungen of solar generators, or the like. There is a large range of such motor pump units, for example, in terms of performance, the filling volume, the useful volume, the assembly with pump elements, the Einsatzdruckbereiche, the dimensions of the items and the like. Different. This leads to a need for a modular design that can be created with as few simple basic components, logistically simple, and in terms of storage well manageable different motor pump units in a universal manner.
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Der Erfindung liegt die Aufgabe zugrunde, ein Motorpumpenaggregat der eingangs genannten Art anzugeben, das aus wenigen, einfach herstellbaren und montierbaren Komponenten besteht und modular erweiterbar oder in unterschiedliche Ausführungsformen universell baukastenartig erweiterbar ist.The invention has for its object to provide a motor pump unit of the type mentioned above, which consists of a few, easy to produce and assemble components and is modular expandable or universally modular manner expandable in different embodiments.
Die gestellte Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.The stated object is achieved with the features of
Im Motorpumpenaggregat ist in dem Außengehäuse die einfach ausgebildete Tragplatte montiert, an der das jeweilige Pumpenelement angeordnet und über den in der Tragplatte angeordneten Druckkanal mit dem außen zugänglichen Anschlussbereich des Außengehäuses über den Rohrnippel verbunden ist. Der Rohrnippel ist Teil des Druckkanals und verbindet den Anschlussbereich im Außengehäuse mit der Druckkanalmündung in der Tragplatte. Es wird kein gesondert hergestellter oder installierter Druckkanal benötigt, und gestaltet sich die druckfeste Verbindung zwischen dem Anschlussbereich des Außengehäuses und dem Druckkanal in der Tragplatte mittels des Rohrnippels einfach. Das Motorpumpenaggregat ist modular erweiterbar oder abwandelbar, indem unterschiedliche Motorpumpenelemente und/oder unterschiedliche Tragplatten in einen Grundtyp des Außengehäuses eingebaut werden. Die unterschiedlichen Tragplatten sind in Bezug auf ihre Montierbarkeit im Außengehäuse und ihren Anschluss an den Anschlussbereich gleich und unterscheiden sich nur hinsichtlich der Montierbereiche für unterschiedliche Pumpenelemente und gegebenenfalls des Druckkanals, wobei die Druckkanalmündung ebenfalls standardisiert sein kann und auf den Rohrnippel abgestimmt ist. Dies erleichtert die Lagerhaltung und vermeidet logistische Probleme, weil der Grundtyp des Außengehäuses mit den unterschiedlichen Tragplatten und den für diese geeigneten Pumpenelementen einfach, platzsparend und übersichtlich bereithaltbar und kombinierbar sind. Insbesondere der Rohrnippel schließt die Notwendigkeit aus, bei vom Außengehäuse getrennter und im Außengehäuse montierter Tragplatte den Druckkanal maßschneidern und bis in den außenliegenden Anschlussbereich führen zu müssen, hingegen bei einer mit dem Außengehäuse verbindbaren Zwischenplatte, in der die Montierbereiche für die Pumpenelemente und der Druckkanal vorgeformt sind, und die auch den Anschlussbereich aufweist, für unterschiedliche Ausführungsformen vom Motorpumpenaggregaten eine Vielzahl solche teurer und aufwendig herstellbarer Zwischenplatten bereithalten zu müssen. Das mit dem Anschlussbereich ausgebildete Außengehäuse kann als Grundtyp in großer Stückzahl kostengünstig und formgenau beispielsweise aus Leichtmetall oder einer Leichtmetalllegierung nach einem Kokillengussverfahren hergestellt werden.In the motor pump unit, the simply formed support plate is mounted in the outer housing, on which the respective pump element is arranged and connected via the arranged in the support plate pressure channel with the externally accessible connection area of the outer housing via the pipe nipple. The pipe nipple is part of the pressure channel and connects the connection area in the outer housing with the pressure channel opening in the support plate. It is not required separately manufactured or installed pressure channel, and designed the pressure-resistant connection between the terminal portion of the outer housing and the pressure channel in the support plate by means of the pipe nipple easy. The motor pump unit is modular expandable or modifiable by different motor pump elements and / or different support plates are installed in a basic type of the outer housing. The different support plates are the same in terms of their mountability in the outer housing and its connection to the connection area and differ only in terms of Montierbereiche for different pump elements and optionally the pressure channel, the pressure channel mouth can also be standardized and tuned to the pipe nipple. This facilitates storage and avoids logistical problems, because the basic type of the outer housing with the different support plates and the suitable pump elements for these simple, space-saving and clearly prepared and can be combined. In particular, the pipe nipple eliminates the need for, when mounted on the outer housing and mounted in the outer housing Tray plate tailor the pressure channel and to have to lead into the outer terminal area, however, in a connectable to the outer housing intermediate plate in which the Montierbereiche for the pump elements and the pressure channel are preformed, and which also has the connection area, for different embodiments of motor pump units a variety to have to have such expensive and expensive to produce intermediate plates. The outer housing formed with the connection region can be produced as a basic type in large numbers in a cost-effective and dimensionally accurate manner, for example, from light metal or a light metal alloy by means of a chill casting process.
Zu einem Außengehäuse-Grundtyp passen unterschiedliche Platten, die sich gegebenenfalls hinsichtlich des Pumpenelement-Montierbereiches und/oder des innenliegenden Druckkanals und/oder des Materials und/oder ihres Herstellverfahrens unterscheiden, ansonsten aber standardisiert sein können, was den Montierbereich im Außengehäuse und die Druckkanalmündung zum Einbringen des Rohrnippels betrifft. Durch Verwendung von Pumpenelementen, die sich hinsichtlich ihres Förderprinzips (Zahnradpumpen oder Kolbenpumpen), z. B., für Mitteldruck- oder Hochdruckeinsatzfälle, und/oder ihrer Bauweise und/oder ihrer Leistung unterscheiden, können wahlweise mit den unterschiedlichen Tragplatten kombiniert werden.To a Außengehäusegrund type fit different plates, which may differ with respect to the Pumpenelement- Montierbereiches and / or the inner pressure channel and / or the material and / or their manufacturing process, but otherwise may be standardized, which the mounting area in the outer housing and the pressure channel mouth to Introducing the pipe nipple concerns. By using pump elements that are in terms of their delivery principle (gear pumps or piston pumps), z. B., for medium pressure or high pressure applications, and / or their construction and / or their performance, can be optionally combined with the different support plates.
Der Rohrnippel ist zweckmäßig beidendig abgedichtet und nach außen aus dem Anschlussbereich des Außengehäuses herausnehmbar montiert. Somit trägt der Rohrnippel zur einfachen Montage des jeweiligen Motorpumpenaggregats und zur Wartungsfreundlichkeit bei.The pipe nipple is suitably sealed at both ends and removably mounted to the outside from the connection area of the outer housing. Thus, the pipe nipple contributes to easy installation of the respective motor pump unit and ease of maintenance.
Der universell für die verschiedensten Ausführungsformen des Motorpumpenaggregats verwendbare Rohrnippel hat zweckmäßig an beiden Endbereichen außen umlaufende Nuten jeweils für eine Dichtung und gegebenenfalls einen Dichtungsstützring, um einerseits eine einfache Montage durch Einschieben des Rohrnippels und andererseits die erforderliche Druckfestigkeit selbst bei dem Hochdruck, den Radialkolben-Pumpenelemente erzeugen, zu gewährleisten.The universally usable for various embodiments of the motor pump assembly pipe nipple has expedient at both end outer circumferential grooves each for a seal and possibly a seal support ring, on the one hand a simple assembly by inserting the pipe nipple and on the other hand the required pressure resistance even at the high pressure, the radial piston pump elements generate, ensure.
Der Rohrnippel kann so installiert werden, dass ein außenliegendes Ende im Anschlussbereich in etwa bündig liegt, während sein anderes Ende mit einer zweckmäßigen Überdeckung in die Druckkanalmündung der Tragplatte eingreift. Die Überdeckung sollte zweckmäßig ein Maß haben, dass in etwa dem Außendurchmesser des Rohrnippels entspricht. Der mit Dichtungen eingesetzte Rohrnippel kompensiert auch gegebenenfalls auftretende Relativbewegungen zwischen der Platte und der Innenwand des Außengehäuses, beispielsweise hervorgerufen durch Vibrationen und/oder thermische Einflüsse.The pipe nipple can be installed so that an outboard end in the connection area is approximately flush, while its other end engages with an appropriate coverage in the pressure channel mouth of the support plate. The coverage should expediently have a dimension that corresponds approximately to the outer diameter of the pipe nipple. The pipe nipple used with seals also compensates for any occurring Relative movements between the plate and the inner wall of the outer housing, for example caused by vibrations and / or thermal influences.
In der Ausführungsform der Tragplatte für zumindest ein Zahnrad-Pumpenelement kann der Druckkanal eine einfache gerade Bohrung mit einem 90° Stichkanal zum Druckauslass der Zahnradpumpe sein. Der Stichkanal mündet an geeigneter Stelle im Montierbereich an einer Seite der Tragplatte. Der Montierbereich dieser Tragplatte passt zu unterschiedlichen Zahnradpumpenelementen.In the embodiment of the support plate for at least one gear pump element, the pressure channel may be a simple straight bore with a 90 ° branch channel to the pressure outlet of the gear pump. The branch channel opens at a suitable point in the mounting area on one side of the support plate. The mounting area of this support plate fits different gear pump elements.
Bei einer anderen Ausführungsform der Tragplatte für beispielsweise Radialkolben-Pumpenelemente ist der Druckkanal im Inneren der Tragplatte als Drucksammelringkanal ausgebildet, der einen Anschluss an die Druckkanalmündung und mehrere in einer Montierfläche für Radialkolben-Pumpenelemente mündende Stichkanäle umfasst. Die Montierfläche kann generell für eine größere Anzahl Radialkolben-Pumpenelemente vorbereitet sein. Nichtbenutzte Stichkanäle werden dann verblockt. Das Lochbild zum Montieren der jeweiligen Tragplatte im Außengehäuse kann unter den verschiedenen, wahlweise einsetzbaren Tragplatten gleich sein, wie auch gegebenenfalls der Durchgang für eine Pumpenwelle und eine Aufnahme für ein Pumpenwellenlager. Alternativ können sich auch diese Strukturen (Durchgang und Lageraufnahme) bei den verschiedenen wahlweise einsetzbaren Typen der Tragplatten unterscheiden, da die von der Tragplatte aufzunehmenden Lager-Belastungen bei einem Zahnrad-Pumpenelement verschieden sind von denen, die bei mehreren meist durch einen Exzenter angetriebenen Radialkolben-Pumpenelementen auftreten.In another embodiment of the support plate for example, radial piston pump elements of the pressure channel is formed in the interior of the support plate as Drucksammelringkanal comprising a connection to the pressure port mouth and a plurality of opening into a mounting surface for radial piston pump elements puncture channels. The mounting surface may generally be prepared for a larger number of radial piston pumping elements. Unused stitch channels are then blocked. The hole pattern for mounting the respective support plate in the outer housing may be the same among the various, optionally usable support plates, as well as possibly the passage for a pump shaft and a receptacle for a pump shaft bearing. Alternatively, these structures (passage and bearing receptacle) may differ in the various types of support plates optionally usable, since the bearing loads to be absorbed by the support plate in a gear pump element are different from those which occur in the case of a plurality of radial piston elements usually driven by an eccentric. Pump elements occur.
Aufgrund der hohen Drücke von Radialkolben-Pumpenelementen ist die für solche Pumpenelemente bestimmte Tragplattengattung aus Stahl hergestellt, während die für Zahnrad-pumpenelemente bestimmten Tragplattentypen beispielsweise aus Leichtmetall oder einer Leichtmetalllegierung bestehen. Die Tragplatten können Gussteile, spanend bearbeitete Teile oder kostengünstig vorgefertigte Formteile sein.Because of the high pressures of radial piston pump elements, the type of support plate intended for such pump elements is made of steel, whereas the types of support plates intended for gear pump elements consist, for example, of light metal or a light metal alloy. The support plates may be castings, machined parts or inexpensively prefabricated moldings.
Der Montierbereich der jeweiligen Tragplatte im Außengehäuse kann eine ebene Kreisringfläche sein, oder in Umfangsrichtung verteilte regelmäßige Montierzonen für Befestigungsschrauben aufweisen. Der Montierbereich für die Pumpenelemente kann für Radialkolben-Pumpenelemente verschieden sein von dem Montierbereich für Zahnradpumpen, wobei, zweckmäßig, ein Zahnradpumpenelement-Montierbereich eine Fläche ist, die die Anbringung unterschiedlicher Typen von Zahnradpumpenelementen wahlweise gestattet.The Montierbereich the respective support plate in the outer housing may be a flat annular surface, or distributed in the circumferential direction have regular mounting zones for mounting screws. The mounting area for the pumping elements may be different from the mounting area for gear pumping for radial piston pumping elements, and, suitably, a gear pumping element mounting area is a surface which allows the attachment of different types of gear pumping elements selectively.
Bei einer zweckmäßigen Ausführungsform ist mit der Innenwand des Außengehäuses ein Wärmeübertragungsring einstückig ausgebildet, der zumindest einen Öldurchgang enthält, damit das im Reservoir gespeicherte Öl zirkulieren kann. Ferner formt der Wärmeübertragungsring einen Statorstecksitz für den Stator des Elektromotors. Um die Steifigkeit des Außengehäuses zu erhöhen, und auch die Wärmeübertragungseigenschaften zu verbessern, können zusätzliche Verrippungen angrenzend an den Wärmeübertragungsring vorgesehen sein. Die Verrippungen können an einer Seite des Wärmeübertragungsring außerdem zur Ausbildung des Montierbereiches für die jeweilige Tragplatte herangezogen werden.In an expedient embodiment, a heat transferring ring is integrally formed with the inner wall of the outer housing, which contains at least one oil passage, so that the stored oil in the reservoir can circulate. Further, the heat transferring forms a Statorstecksitz for the stator of the electric motor. In order to increase the rigidity of the outer casing, and also to improve the heat transfer properties, additional ribs may be provided adjacent to the heat transferring ring. The ribs can also be used on one side of the heat transfer ring to form the Montierbereiches for each support plate.
Im Außengehäuse kann sich der Verbindungskanal, in den der Rohrnippel eingebracht wird, in beträchtlichem Abstand vom offenen Ende des Außengehäuses befinden. Dieser Abstand kann ein mehrfaches der Plattendicke betragen und wird so gewählt, dass für unterschiedlich hohe Pumpenelemente ausreichend Platz vorliegt, und diese nicht über das offene Ende des Außengehäuses vorstehen. Vorzugsweise ist sogar zwischen dem hydraulischen Anschlussbereich an der Außenseite des Außengehäuses und dem offenen Ende ein elektrischer Anschlussbereich oder Anschlusskasten des Motorpumpenaggregats angeordnet.In the outer housing, the connecting channel, in which the pipe nipple is introduced, located at a considerable distance from the open end of the outer housing. This distance can be a multiple of the plate thickness and is chosen so that there is sufficient space for pump elements of different heights and they do not project beyond the open end of the outer housing. Preferably, even between the hydraulic connection area on the outer side of the outer housing and the open end, an electrical connection area or connection box of the motor pump unit is arranged.
In einer Ausführungsform des Motorpumpenaggregates bestimmt der Grundtyp des Außengehäuses das Füllvolumen und das Nutzvolumen mit direkt an den beiden offenen Enden des Außengehäuses angebrachten Verschlussdeckeln. Bei einem Füllvolumen von beispielsweise 12,0 I kann dann ein Nutzvolumen von beispielsweise 5,0 I erzielt werden.In one embodiment of the motor pump unit, the basic type of outer housing determines the filling volume and the useful volume with sealing lids attached directly to the two open ends of the outer housing. With a filling volume of, for example, 12.0 l, a useful volume of, for example, 5.0 l can then be achieved.
Bei einer weiteren Ausführungsform des Motorpumpenaggregats mit größerem Füllvolumen und größerem Nutzvolumen ist zwischen dem Außengehäuse und wenigstens einem Verschlussdeckel ein Verlängerungsgehäuse eingebaut. So lässt sich beispielsweise mit dem gleichen Außengehäuse eine Erweiterung auf ein Füllvolumen von 22,0 I und ein Nutzvolumen von 14,0 I erzielen.In a further embodiment of the motor pump unit with a larger filling volume and larger useful volume, an extension housing is installed between the outer housing and at least one closure lid. For example, an extension to a filling volume of 22.0 l and a useful volume of 14.0 l can be achieved with the same outer housing.
Bei einer anderen Ausführungsform des Motorpumpenaggregats wird zur Erweiterung ein weiteres gleiches Außengehäuse des Grundtyps eingebaut, sodass beispielsweise ein Zweikreis-Pumpensystem mit gleichen oder unterschiedlichen Pumpenelementbestückungen geschaffen wird, das sich das Füllvolumen und Nutzvolumen teilt.In another embodiment of the motor pump unit, a further identical outer housing of the basic type is installed for expansion, so that, for example, a dual-circuit pump system with the same or different pump element configurations is created which shares the filling volume and useful volume.
Bei einer weiteren Ausführungsform wird an zumindest einem Verschlussdeckel ein Kühllüfter montiert, der einen eigenen Antriebsmotor besitzt und mit verrippten Strukturen außen am Außengehäuse bzw. am Verlängerungsgehäuse für eine intensivere Wärmeabfuhr sorgt.In a further embodiment, a cooling fan is mounted on at least one closure lid, which has its own drive motor and provides with ribbed structures outside of the outer housing or on the extension housing for a more intense heat dissipation.
Anhand der Zeichnungen werden Ausführungsformen des Erfindungsgegenstandes erläutert. Es zeigen:
- Fig.1
- einen Längsschnitt einer ersten Ausführungsform eines Motorpumpenaggregats,
- Fig. 2
- eine Schnittansicht zu
Fig. 1 in einer Schnittebene II vonFig. 3 , - Fig. 3
- eine Seitenansicht zu
Fig. 1 , - Fig. 4
- einen Längsschnitt analog zu
Fig. 1 einer weiteren Ausführungsvariante, und - Fig. 5
- einen Längsschnitt einer weiteren Ausführungsvariante des Motorpumpenaggregats.
- Fig.1
- a longitudinal section of a first embodiment of a motor pump unit,
- Fig. 2
- a sectional view too
Fig. 1 in a sectional plane II ofFig. 3 . - Fig. 3
- a side view too
Fig. 1 . - Fig. 4
- a longitudinal section analogous to
Fig. 1 a further embodiment, and - Fig. 5
- a longitudinal section of another embodiment of the motor pump unit.
In den Ausführungsformen der
Das Motorpumpenaggregat A in
Im Außengehäuse 1 ist, vorzugsweise einstückig mit der Innenwand 7, ein Wärmeübertragungsring 8 vorgesehen, der einen Statorstecksitz 9 für einen Stator 20 des Elektromotors E definiert und an dem dem Statorstecksitz 9 abgewandt ein Montierbereich 10 für die jeweilige Tragplatte TP1, TP2 vorgesehen ist. Zumindest im Bereich des Wärmeübertragungsringes 8 können zusätzlichen Verrippungen 11 vorgesehen sein (siehe auch
Der in
In der Tragplatte TP1 ist ein mittiger Durchgang 17' für eine Motorwelle 19 angrenzend an einen Lagersitz 17 für ein Motorwellenlager 18 geformt. Das andere Ende der Motorwelle 19 ist in einem Wellenlager 21 am oberen Statorende benachbart zum Verschlussdeckel 5 gelagert.In the support plate TP1, a central passage 17 'for a
Der Anschlussbereich B befindet sich im Abstand vom offenen Ende 4 des Außengehäuses 1. In der außenliegenden Mündung des Anschlusskanals 24 kann eine Aufweitung 27 geformt sein, in die ein außenliegender Bund des Rohrnippels N eingreift und die Einstecktiefe begrenzt. Von der Innenwand 7 kann sich eine in Richtung zum Außenrand 13 der Tragplatte TP1 erstreckende oder diesen kontaktierende Schürze 29 vorgesehen sein.The connection region B is located at a distance from the
Der Rohrnippel N ist ein gerader Rohrabschnitt und weist in beiden Endbereichen außenliegende Umfangsnuten 26 für jeweils eine Dichtung und gegebenenfalls einen Stützring auf. Der Rohrnippel N ist von der Außenseite des Außengehäuses in den Anschlusskanal 24 eingesetzt, mit seinem Ende in etwa bündig mit dem Anschlussbereich B und mit dem anderen Ende mit einer Überdeckung in der Druckkanalmündung 25 aufgenommen, wobei das Maß der Überdeckung beispielsweise in etwa dem Außendurchmesser des Rohrnippels N entspricht. Zwischen dem hydraulischen Anschlussbereich B im Außengehäuse 1 und dem offenen Ende 4 kann ein elektrischer Anschlussbereich 23, beispielsweise ein Klemmenkasten, am Außengehäuse vorgesehen sein.The pipe nipple N is a straight pipe section and has in both end regions outer
Das Außengehäuse 1 definiert mit den Verschlussdeckeln 5, 6 ein bestimmtes Füllvolumen eines Ölreservoirs R, beispielsweise in
In der Seitenansicht in
Die Ausführungsform des Motorpumpenaggregats A in
In der Ausführungsform des Motorpumpenaggregats A in
In den
In
Bei einer weiteren, nicht gezeigten Erweiterungsstufe eines Motorpumpenaggregats A entweder gemäß
Bei einer zweckmäßigen Ausführungsform beträgt die Höhe des Motorpumpenaggregats gemäß
Claims (16)
Priority Applications (2)
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EP20090005384 EP2241753B1 (en) | 2009-04-15 | 2009-04-15 | Motor pump unit |
ES09005384T ES2389633T3 (en) | 2009-04-15 | 2009-04-15 | Motor pump group |
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EP20090005384 EP2241753B1 (en) | 2009-04-15 | 2009-04-15 | Motor pump unit |
Publications (2)
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EP2241753A1 true EP2241753A1 (en) | 2010-10-20 |
EP2241753B1 EP2241753B1 (en) | 2012-08-01 |
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EP20090005384 Active EP2241753B1 (en) | 2009-04-15 | 2009-04-15 | Motor pump unit |
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ES (1) | ES2389633T3 (en) |
Cited By (6)
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EP2642122A1 (en) | 2012-03-21 | 2013-09-25 | HAWE Hydraulik SE | Pump power unit |
DE102015207033A1 (en) * | 2015-04-17 | 2016-10-20 | Werkzeuge Für Die Elektrische Stromverteilung Ug (Haftungsbeschränkt) | Portable mobile hydraulic pump for hydraulically operated tools |
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DE102017127675A1 (en) * | 2017-11-23 | 2019-05-23 | Hoerbiger Automatisierungstechnik Holding Gmbh | Hydraulic pressure supply unit |
EP3536952A1 (en) * | 2018-03-05 | 2019-09-11 | Hydac Fluidtechnik GmbH | Connection device of hydraulic pump unit |
US11193491B2 (en) | 2019-05-03 | 2021-12-07 | Hawe Hydraulik Se | Hydraulic power unit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102018214555B4 (en) * | 2018-08-28 | 2022-09-08 | Hawe Hydraulik Se | Modular motor pump unit |
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Also Published As
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ES2389633T3 (en) | 2012-10-29 |
EP2241753B1 (en) | 2012-08-01 |
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