EP1443210B1 - Motorpumpenaggregat - Google Patents
Motorpumpenaggregat Download PDFInfo
- Publication number
- EP1443210B1 EP1443210B1 EP03022470A EP03022470A EP1443210B1 EP 1443210 B1 EP1443210 B1 EP 1443210B1 EP 03022470 A EP03022470 A EP 03022470A EP 03022470 A EP03022470 A EP 03022470A EP 1443210 B1 EP1443210 B1 EP 1443210B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pumps
- pump
- motor
- electric motor
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000555745 Sciuridae Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
-
- 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
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/03—Containers specially adapted for medical or pharmaceutical purposes for pills or tablets
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/008—Prime movers
Definitions
- the invention relates to a motor pump unit comprising an electric motor and a pump.
- the motor and pump are nested; the engine envelops the pump.
- EP 0 611 887 A1 describes another motor pump unit.
- the rotor of the engine is an independent component, but rotatably connected to the cylinder block of a piston pump.
- the invention has for its object to further improve a motor pump unit of the type mentioned, in particular with respect to the manufacturing costs and space requirements.
- the entire motor pump unit comprises two axially aligned internal gear pumps and an electric motor which is associated with the one of the two pump.
- the adjacent pumps are assigned to each other such that they can be driven by a single electric motor. It can thus achieve a high delivery volume and / or a high delivery pressure.
- a big advantage is that the two pumps are inside a single housing are arranged so that they are enclosed in the operation of the entire unit of oil and therefore no seals are needed.
- the two pumps can be completely identical. But they can also have different diameters in the conveying area, i. where the conveyor tooth boundary is located.
- the invention can be applied to internal gear pumps.
- the pump forms a completely independent, self-sufficient unit. It can be manufactured separately, tested separately and installed completely in the space enclosed by the stator of the electric motor.
- the engine is cooled with oil.
- the motor pump unit comprises an electric motor 1 with a laminated stator core 1.1, a winding 1.2 and a rotor 1.3.
- first internal gear pump 2 This has a pinion 2.1, a relative to this eccentric ring gear 2.2 and a pinion shaft 2.3.
- the pinion shaft 2.3 is mounted in side windows 2.4, 2.5.
- plain bearings 2.4.1, 2.5.1 are provided.
- the two elements motor and first pump are enclosed by a common housing 3.
- a common housing 3 In the housing 3 there is an inlet 3.1 and a first outlet 3.2 for the medium to be pumped.
- the rotor 1.3 of the engine 1 is cup-shaped. In the present axial section, it appears U-shaped.
- the pinion shaft is 2.3 with the rotor 1.3 via a tooth 2.3.1 in rotary connection.
- the web 1.3.1 of the U namely an internal toothing
- the pinion shaft has a corresponding external toothing. Internal teeth and external teeth mesh with each other.
- the rotor 1.3 is mounted on the first pump 2, more precisely on the ring gear 2.3 and the side windows 2.4, 2.5.
- a second internal gear pump is provided. This is arranged axially adjacent to the first pump 2, in such a way that the axes of the two pumps are aligned.
- the housing 3 is led out beyond the first pump 2 and also flows around the second pump 20.
- the second pump 20 is identical in construction to the first pump 2. It accordingly has a pinion shaft 20.3, which with the pinion shaft 2.3 is identical and which is also about a toothing 20.3.1 with the rotor 1.3 in rotary connection.
- the housing 3 has a second outlet 3.3.
- the second pump 20 is fixed to the right lid of the housing 3.
- the pot-shaped rotor 1.3 drives the two pinion shafts 2.3, 20.3.
- the course of the oil is shown by the bold arrows.
- the oil is sucked in at inlet 3.1, shown in the figure on the left, passes through the gap between stator lamination 1.1 and rotor 1.3 in the space between the two pumps 2 and 20. There, the oil flow is divided. A partial flow passes through the pump 2 and at the first outlet 3.2 again, and a second partial flow passes through the second pump 20 and the second outlet 3.2 from.
- the motor pump unit thus has a suction port and two pressure ports.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pharmacology & Pharmacy (AREA)
- Veterinary Medicine (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Reciprocating Pumps (AREA)
- Compressor (AREA)
- Control Of Electric Motors In General (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
- Die Erfindung betrifft ein Motorpumpenaggregat, umfassend einen Elektromotor und eine Pumpe. Dabei sind Motor und Pumpe ineinander verschachtelt; der Motor umhüllt die Pumpe. Auf WO 01/73295 wird verwiesen.
- DE 195 38 278 A1 beschreibt ein ähnliches Motorpumpenaggregat. Dabei ist der Rotor des Elektromotors gleichzeitig das Pumpenrad der Pumpe.
- EP 0 611 887 A1 beschreibt ein weiteres Motorpumpenaggregat. Dabei ist der Rotor des Motors zwar ein eigenständiges Bauteil, aber mit dem Zylinderblock einer Kolbenpumpe drehfest verbunden.
- Aggregate dieser Bauart haben den großen Vorteil, dass sie nur einen minimalen Raum beanspruchen. Sie sind aber noch verbesserungsfähig.
- Der Erfindung liegt die Aufgabe zugrunde, ein Motorpumpenaggregat der genannten Bauart noch weiter zu verbessern, insbesondere bezüglich des Fertigungsaufwandes und des Raumbedarfs.
- Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst.
- Die Erfindung geht aus von der genannten WO-Schrift, jedoch mit einer Vervielfachung der einzelnen Aggregate. Gemäß einer bevorzugten Ausführungsform umfasst das gesamte Motorpumpenaggregat zwei axial miteinander fluchtende Innnenzahnradpumpen sowie einen Elektromotor, der der einen der beiden Pumpe zugeordnet ist. Dabei sind die einander benachbarten Pumpen einander derart zugeordnet, dass sie von einem einzigen Elektromotor angetrieben werden können. Es lässt sich damit ein hohes Fördervolumen und/ oder ein hoher Förderdruck erzielen. Ein großer Vorteil liegt darin, dass die beiden Pumpen innerhalb eines einzigen Gehäuses angeordnet sind, so dass sie beim Betrieb des gesamten Aggregates von Öl umschlossen sind und daher keine Dichtungen benötigt werden.
- Die beiden Pumpen können völlig baugleich sein. Sie können aber auch unterschiedliche Durchmesser im Förderbereich haben, d.h. dort, wo sich die Förderzahngrenze befinden.
- Es kommen verschiedene Arten von Elektromotoren in Betracht, beispielsweise Asynchronmotoren, Reluktanzmotoren oder sogenannte Kurzschlussläufer.
- Es kommen auch die unterschiedlichsten Arten von Pumpen in Betracht. Besonders vorteilhaft lässt sich die Erfindung bei Innenzahnradpumpen anwenden.
- Die Pumpe bildet dabei eine völlig selbständige, autarke Einheit. Sie lässt sich separat herstellen, separat prüfen sowie komplett in den vom Stator des Elektromotors umschlossenen Raum einbauen.
- Der Motor wird mit Öl gekühlt.
- Dabei ist es möglich, den Rotor des Elektromotors auf dem Gehäuse der betreffenden Innenzahnradpumpe zu lagern.
- Die Erfindung ist anhand der Zeichnungen erläutert. Darin ist im einzelnen folgendes dargestellt:
- Das Motorpumpenaggregat umfasst einen Elektromotor 1 mit einem Statorblechpaket 1.1, einer Wicklung 1.2 und einem Rotor 1.3.
- Es umfasst ferner eine erste Innenzahnradpumpe 2. Diese weist ein Ritzel 2.1 auf, ein gegenüber diesem exzentrischen Hohlrad 2.2 sowie einer Ritzelwelle 2.3. Die Ritzelwelle 2.3 ist in Seitenscheiben 2.4, 2.5 gelagert. Im vorliegenden Falle sind Gleitlager 2.4.1, 2.5.1 vorgesehen.
- Die beiden Elemente Motor und erste Pumpe sind von einem gemeinsamen Gehäuse 3 umschlossen. Im Gehäuse 3 befinden sich ein Zulauf 3.1 sowie ein erster Auslauf 3.2 für das zu pumpende Medium.
- Der Rotor 1.3 des Motors 1 ist topfförmig gestaltet. Im vorliegenden Axialschnitt erscheint er U-förmig. Dabei steht die Ritzelwelle 2.3 mit dem Rotor 1.3 über eine Verzahnung 2.3.1 in Drehverbindung. Im Steg 1.3.1 des U befindet sich nämlich eine Innenverzahnung, während die Ritzelwelle eine entsprechende Außenverzahnung aufweist. Innenverzahnung und Außenverzahnung kämmen miteinander.
- Es könnte auch eine anderweitige Triebverbindung zwischen dem Rotor 1.3 des Motors 1 und der Ritzelwelle 2.3 hergestellt sein. So ist es denkbar, zwischen diesen beiden nicht nur eine einzige, sondern zwei oder mehrere Verzahnungen mit entsprechenden Drehmoment übertragenden Elementen vorzusehen, so dass eine Übersetzung von der Drehzahl des Rotors zur Ritzelwelle ins Langsame oder ins Schnelle erfolgt.
- Der Rotor 1.3 ist auf der ersten Pumpe 2 gelagert, genauer gesagt auf dem Hohlrad 2.3 und den Seitenscheiben 2.4, 2.5.
- Gemäß der Erfindung ist eine zweite Innenzahnradpumpe vorgesehen. Diese ist axial neben der ersten Pumpe 2 angeordnet, und zwar derart, dass die Achsen der beiden Pumpen miteinander fluchten. Das Gehäuse 3 ist über die erste Pumpe 2 hinausgeführt und umfließt auch die zweite Pumpe 20.
- Die zweite Pumpe 20 ist baugleich mit der ersten Pumpe 2. Sie weist demgemäss auch eine Ritzelwelle 20.3 auf, die mit der Ritzelwelle 2.3 baugleich ist und die ebenfalls über eine Verzahnung 20.3.1 mit dem Rotor 1.3 in Drehverbindung steht.
- Das Gehäuse 3 weist einen zweiten Auslauf 3.3 auf.
- Die zweite Pumpe 20 ist am rechten Deckel des Gehäuses 3 fixiert.
- Bei der erfindungsgemäßen Ausführungsform treibt somit der topfförmige Rotor 1.3 die beiden Ritzelwellen 2.3, 20.3 an.
- Der Verlauf des Öles ist durch die fettgedruckten Pfeile dargestellt. Das Öl wird bei Zulauf 3.1, in der Figur links dargestellt, angesaugt, gelangt durch den Spalt zwischen Statorblechpaket 1.1 und Rotor 1.3 in den Zwischenraum zwischen den beiden Pumpen 2 und 20. Dort teilt sich der Ölstrom auf. Ein Teilstrom tritt durch die Pumpe 2 hindurch und am ersten Auslauf 3.2 wieder aus, und ein zweiter Teilstrom tritt durch die zweite Pumpe 20 hindurch und am zweiten Auslauf 3.2 aus. Das Motorpumpenaggregat hat somit einen Sauganschluss und zwei Druckanschlüsse.
Claims (1)
- Motorpumpenaggregat;
mit zwei Innenzahnradpumpen (2,20), jeweils umfassend ein Ritzel, ein gegenüber diesem exzentrisches Hohlrad sowie eine Ritzelwelle (2.3, 20.3) die in Seitenscheiben gelagert ist;
die Ritzel der beiden Pumpen (2, 20) sind baugleich, und die Achsen der Pumpen (2, 20) fluchten miteinander;
wenigstens einer der beiden Pumpen (2, 20) ist ein Elektromotor (1) zugeordnet;
der Rotor (1.3) des Elektromotors (1) ist - im Axialschnitt gesehen - U-förmig und umschließt die ihm zugeordnete Pumpe (2) konzentrisch;
der Steg (1.3.1) des U ist im Bereich der Drehachse mit einer Innenverzahnung versehen;
die Innenverzahnung des Steges kämmt mit den beiden Ritzelwellen (2.3, 20.3);
der Elektromotor (1) und die Pumpen (2, 20) sind von einem einzigen Gehäuse (3) umschlossen;
den beiden Pumpen (2, 20) sind ein einziger Sauganschluss (3.1) und zwei Druckanschlüsse (3.2, 3.3) zugeordnet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10304121 | 2003-01-31 | ||
| DE10304121A DE10304121A1 (de) | 2003-01-31 | 2003-01-31 | Motorpumpenaggregat |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1443210A2 EP1443210A2 (de) | 2004-08-04 |
| EP1443210A3 EP1443210A3 (de) | 2005-08-10 |
| EP1443210B1 true EP1443210B1 (de) | 2006-08-02 |
| EP1443210B8 EP1443210B8 (de) | 2006-09-06 |
Family
ID=32603100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03022470A Expired - Lifetime EP1443210B8 (de) | 2003-01-31 | 2003-10-08 | Motorpumpenaggregat |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7381036B2 (de) |
| EP (1) | EP1443210B8 (de) |
| JP (1) | JP3971369B2 (de) |
| KR (1) | KR20040069989A (de) |
| AT (1) | ATE335132T1 (de) |
| DE (2) | DE10304121A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111102202A (zh) * | 2019-12-21 | 2020-05-05 | 郭伟聪 | 一种多方位液体远距离输送装置 |
| WO2020253559A1 (zh) * | 2019-06-19 | 2020-12-24 | 浙江三花智能控制股份有限公司 | 电动泵 |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273648A (ja) * | 2004-02-23 | 2005-10-06 | Aisin Seiki Co Ltd | 電動ポンプ |
| DE202005005620U1 (de) * | 2005-04-08 | 2006-08-17 | Hawe Hydraulik Gmbh & Co. Kg | Pumpenaggregat |
| DE102006042810A1 (de) * | 2006-09-08 | 2008-03-27 | Voith Turbo Gmbh & Co. Kg | Hydrostatische Energieerzeugungseinheit |
| FR2918718B1 (fr) * | 2007-07-10 | 2013-06-28 | Inergy Automotive Systems Res | Pompe rotative pour vehicule. |
| JP2009191754A (ja) * | 2008-02-15 | 2009-08-27 | Toyota Industries Corp | 可変容量ギヤポンプ |
| JP5860695B2 (ja) * | 2011-12-28 | 2016-02-16 | Kyb株式会社 | 電動オイルポンプ |
| JP5767996B2 (ja) * | 2012-03-29 | 2015-08-26 | カヤバ工業株式会社 | 流体圧駆動ユニット |
| JP5934543B2 (ja) * | 2012-03-29 | 2016-06-15 | Kyb株式会社 | 流体圧駆動ユニット |
| KR102150608B1 (ko) * | 2014-02-25 | 2020-09-01 | 엘지이노텍 주식회사 | 전동 펌프 |
| DE102015015863A1 (de) * | 2015-12-09 | 2017-06-14 | Fte Automotive Gmbh | Elektromotorisch angetriebene Flüssigkeitspumpe |
| CN105464964B (zh) * | 2015-12-31 | 2017-12-01 | 太仓顺达磁力泵科技有限公司 | 一种用于固液混合物料输送的传输泵 |
| CN210141194U (zh) * | 2016-09-30 | 2020-03-13 | 日本电产东测有限公司 | 泵装置 |
| DE102016225923B4 (de) | 2016-12-21 | 2020-06-18 | Hawe Hydraulik Se | Pumpenaggregat für ein Hydrauliksystem und Kanalelement für ein Pumpenaggregat |
| DE102019200560B4 (de) | 2018-09-14 | 2025-04-30 | Hanon Systems Efp Deutschland Gmbh | Gerotorpumpe und Verfahren zur Herstellung eines Druckausgleichs in einer Gerotorpumpe |
| JP7437396B2 (ja) | 2018-11-13 | 2024-02-22 | ジーエイチエスピー・インコーポレイテッド | 多様な用途で使用するためのモジュラー流体ポンプ |
| US11990819B2 (en) | 2020-11-24 | 2024-05-21 | Bosch Rexroth Corporation | Electric and hydraulic machine |
| DE102023116639A1 (de) * | 2023-06-23 | 2024-12-24 | Valeo Embrayages | Hydraulikpumpe |
| GB202319533D0 (en) * | 2023-12-19 | 2024-01-31 | Rolls Royce Plc | Positive displacement pump system |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2420124A (en) * | 1944-11-27 | 1947-05-06 | Coulson Charles Chilton | Motor-compressor unit |
| US2691346A (en) * | 1948-09-07 | 1954-10-12 | F E Myers & Bro Co | Double rotary fluid pump |
| US2711286A (en) * | 1952-08-01 | 1955-06-21 | Wetmore Hodges | Motor-pump or compressor |
| US2871793A (en) * | 1956-06-29 | 1959-02-03 | Robbins & Myers | Electric motor and pump combination |
| FR1458497A (fr) * | 1965-09-23 | 1966-03-04 | Outil Hydraulique B G | Répartiteur-synchronisateur de débits |
| DE2938276A1 (de) * | 1979-09-21 | 1981-04-09 | Robert Bosch Gmbh, 7000 Stuttgart | Fluegelzellenverdichter |
| AU595039B2 (en) * | 1986-04-23 | 1990-03-22 | A.B. Svenska Rotor Maskiner | Cone type screw compressor |
| DE3614819A1 (de) * | 1986-05-02 | 1987-11-12 | Kloeckner Humboldt Deutz Ag | Innenverzahnte doppelpumpe mit gemeinsamer ansaugung und getrennten druckausgaengen |
| JP2687822B2 (ja) | 1992-08-06 | 1997-12-08 | ダイキン工業株式会社 | 流体圧力発生装置 |
| EP0769621A1 (de) * | 1995-09-26 | 1997-04-23 | Fraunhofer-Gesellschaft Zur Förderung Der Angewandten Forschung E.V. | Mikropumpe und Mikromotor |
| DE19538278A1 (de) | 1995-10-15 | 1996-05-02 | Sbs Sondermaschinen Gmbh | Umwälzpumpe mit Elektroantrieb |
| US5857842A (en) * | 1997-06-16 | 1999-01-12 | Sheehan; Kevin | Seamless pump with coaxial magnetic coupling including stator and rotor |
| DE19817162A1 (de) * | 1998-04-17 | 1999-10-21 | Sachsenhydraulik Gmbh | Elektrohydraulischer Kompaktantrieb |
| JP2002522696A (ja) * | 1998-08-06 | 2002-07-23 | オートモウティヴ、モウシャン、テクノラジ、リミティド | 電動機駆動ポンプ |
| DE10015139A1 (de) * | 2000-03-29 | 2001-10-11 | Voith Turbo Kg | Motorpumpenaggregat |
| US6733249B2 (en) * | 2001-05-17 | 2004-05-11 | Delphi Technologies, Inc. | Multi-stage internal gear fuel pump |
| US6699024B2 (en) * | 2001-06-29 | 2004-03-02 | Parker Hannifin Corporation | Hydraulic motor |
| KR100875749B1 (ko) * | 2002-07-02 | 2008-12-24 | 엘지전자 주식회사 | 밀폐형 압축기 |
-
2003
- 2003-01-31 DE DE10304121A patent/DE10304121A1/de not_active Ceased
- 2003-10-08 AT AT03022470T patent/ATE335132T1/de not_active IP Right Cessation
- 2003-10-08 EP EP03022470A patent/EP1443210B8/de not_active Expired - Lifetime
- 2003-10-08 DE DE50304454T patent/DE50304454D1/de not_active Expired - Lifetime
- 2003-11-26 JP JP2003396239A patent/JP3971369B2/ja not_active Expired - Fee Related
-
2004
- 2004-01-15 KR KR1020040002837A patent/KR20040069989A/ko not_active Withdrawn
- 2004-01-30 US US10/768,495 patent/US7381036B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020253559A1 (zh) * | 2019-06-19 | 2020-12-24 | 浙江三花智能控制股份有限公司 | 电动泵 |
| US11976658B2 (en) | 2019-06-19 | 2024-05-07 | Zhejiang Sanhua Intelligent Controls Co., Ltd. | Electric pump with cooling channel arrangement |
| CN111102202A (zh) * | 2019-12-21 | 2020-05-05 | 郭伟聪 | 一种多方位液体远距离输送装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE335132T1 (de) | 2006-08-15 |
| KR20040069989A (ko) | 2004-08-06 |
| EP1443210B8 (de) | 2006-09-06 |
| EP1443210A3 (de) | 2005-08-10 |
| EP1443210A2 (de) | 2004-08-04 |
| DE50304454D1 (de) | 2006-09-14 |
| US20040219035A1 (en) | 2004-11-04 |
| JP3971369B2 (ja) | 2007-09-05 |
| DE10304121A1 (de) | 2004-08-12 |
| US7381036B2 (en) | 2008-06-03 |
| JP2004232627A (ja) | 2004-08-19 |
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