EP2786020A2 - Nassläufer-motorpumpe - Google Patents
Nassläufer-motorpumpeInfo
- Publication number
- EP2786020A2 EP2786020A2 EP12818776.2A EP12818776A EP2786020A2 EP 2786020 A2 EP2786020 A2 EP 2786020A2 EP 12818776 A EP12818776 A EP 12818776A EP 2786020 A2 EP2786020 A2 EP 2786020A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- motor
- rotor
- space
- annular
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D13/0606—Canned motor pumps
- F04D13/062—Canned motor pumps pressure compensation between motor- and pump- compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
Definitions
- the invention relates to a wet-rotor motor pump with a can, which separates the motor stator from the rotor mounted in the can on a motor shaft, wherein the motor shaft protrudes into the pump chamber and there carries the pump impeller, and wherein on the impeller back coaxial with the pump chamber there is an open annular space from which through at least one flow passage located in the dividing wall, the delivery fluid flows into the rotor space in order to flow back into the pump chamber after flowing through the rotor space.
- the rotor of the electric motor is surrounded by the medium.
- the stator is separated from the medium by a canned / pot.
- the bearings of the rotor are lubricated by the medium.
- the media are with particles and
- the object of the invention is to allow as few particles as possible to enter the rotor space.
- Annulus connects with the impeller interior in particular with the pump suction.
- the impeller rear carries conveying elements, in particular in the form of blades, which hold the fluid in the annular space
- a coaxial ring element can protrude, which surrounds the motor shaft and delimits the annular space towards the motor shaft. It is also advantageous if the annular element of the impeller with its free annular end face on the can, in particular on Spaltrohrflansch adjacent in such a way that between the end face and the can, in particular the
- Canned tube surrounding rotor space passes. It is also proposed that the wall of the coaxial ring element is bent in a quarter-circle in cross-section to the outside, so that the ring member has a larger diameter at its annular free end face than in the remaining area.
- the motor shaft is a hollow shaft through which liquid in the rotor chamber flows into the pump chamber.
- the motor hollow shaft in the amount of the ring member at least one particular radial opening, bore or groove, flows through the liquid from the annular element surrounding the inner ring space in the wave cavity, so that also thereby particles are discharged to the suction side.
- the impeller has a rear support disk on which the impeller blades are arranged, wherein on the back of the Support disc permanent magnets are mounted, for trapping contained in the pumped liquid particles wherein the support disc is made of plastic, that the magnets are disposed within the plastic of the support disc and that the magnet side, which is located on the back of the support disc
- Flow is facing is covered by a layer of material.
- the material layer covering the magnets ensures that the magnetizable particles do not adhere to the magnet of the impeller, but are conveyed into the pump chamber by the centrifugal forces acting on the rear side of the impeller and thus conveyed to the pump outlet.
- the magnets have it for the
- magnetizable particles a diverting effect, being sure that they do not adhere to the magnet and thus does not worsen the efficiency of the impeller.
- the wet-rotor motor pump has, as a centrifugal pump, an impeller 1 which is driven by a coaxial shaft, in particular a hollow shaft 2, which carries a rotor core 3 which rotates within the stator 4 of the electric motor.
- the rotor core 3 is separated from the stator by a split tube 5, that of the conveyed medium
- the can 5 forms on the impeller 1 end facing a
- a ring member 11 is coaxially formed, so that between the impeller back and the Spaltrohrflansch 8, an annular space 12 which is separated from the rest of the pump chamber 10 to a gap 13.
- An annular throttled flow opening 7 is formed between the front end of the annular projection 11 and the can 5 and / or between the annular projection 11 and a sealing coaxial, not shown sealing ring, in particular floating ring surrounding the Hohiweiie 2.
- the from the Annulus 12 through the annular opening 17 between ring member 11 and can 5 in the crevice interior flowing medium first flows past the inner wall of the can 5 to the crevice end to pass through openings in the longitudinal cavity 18 of the hollow shaft 2 and back to the suction side of the pump.
- the ring member 11 has substantially the shape of a cylinder liner, which is integrally formed on the rear wheel.
- the wall of the coaxial ring element is bent in a quarter-circle in cross-section to the outside, so that the ring member 11 at its annular free end face has a larger diameter than in the remaining area.
- the outer end face 14 of the ring element with the gap tube 5 or the Spaltrohrflansch 8 the flow opening 17 through which flows a small portion of the fluid from the annular space 12 in the rotor space surrounding the can.
- the liquid within the annular space 12 is throttled by the fact that in the rear wall of the impeller 1 at least one throttled opening 15 is arranged, flows through the liquid contained in the annular space 12 there accumulated particles to the suction side of the pump.
- the hollow shaft 2 is located near the impeller 1 at the level of the ring member 11 at least one particular radial opening 19, bore or groove, flows through the liquid from the annular element 11 surrounding the inner annular space 20 in the wave cavity 18.
- bore or groove flows through the liquid from the annular element 11 surrounding the inner annular space 20 in the wave cavity 18.
- the effect of the magnetic force acting on the particles that the aspiring through the Radreteraumströmung to the center (wave) particles are deflected by these magnets on the impeller back to the impeller rear wall and are pushed back by the centrifugal force acting here in the pump chamber, without the engine rotor space within the Can reach gap pot or canned and without getting into the camp.
- the magnets can be designed differently, eg as a ring,
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011119625A DE102011119625A1 (de) | 2011-11-29 | 2011-11-29 | Nassläufer-Motorpumpe |
| PCT/EP2012/004851 WO2013079178A2 (de) | 2011-11-29 | 2012-11-23 | Nassläufer-motorpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2786020A2 true EP2786020A2 (de) | 2014-10-08 |
| EP2786020B1 EP2786020B1 (de) | 2020-09-23 |
Family
ID=47603520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12818776.2A Active EP2786020B1 (de) | 2011-11-29 | 2012-11-23 | Nassläufer-motorpumpe |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2786020B1 (de) |
| DE (1) | DE102011119625A1 (de) |
| WO (1) | WO2013079178A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3017907B1 (fr) * | 2014-02-26 | 2019-01-25 | Wilo Salmson France | Pompe de circulation de fluide comportant deux sous-ensembles dont l'un est amovible par rapport a l'autre |
| EP3032712B1 (de) | 2014-12-12 | 2018-02-07 | Goodrich Control Systems | Motor für ein elektrohydraulisches Stellorgan |
| KR102367740B1 (ko) * | 2015-11-18 | 2022-02-28 | 한온시스템 주식회사 | 차량용 공기 압축기 |
| DE102017214997A1 (de) * | 2017-08-28 | 2019-02-28 | Mahle International Gmbh | Elektrische Fluidpumpe |
| US11293444B2 (en) * | 2018-06-14 | 2022-04-05 | Regal Beloit America, Inc. | Pump assembly having an axial flux electric motor |
| CN116753194B (zh) * | 2023-07-14 | 2025-12-02 | 东莞百斯特流体科技有限公司 | 一种泵的内置循环散热结构及该种泵 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1496035A (en) * | 1974-07-18 | 1977-12-21 | Iwaki Co Ltd | Magnetically driven centrifugal pump |
| JPS51111902A (en) * | 1975-03-26 | 1976-10-02 | Iwaki:Kk | Magnet pump |
| DE3645260C2 (de) * | 1986-11-20 | 1995-01-19 | Hermetic Pumpen Gmbh | Pumpe mit einem Spaltrohrmagnetkupplungsantrieb |
| DE3931665C1 (en) * | 1989-09-22 | 1991-02-21 | Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund, De | Split-ring electric motor for pump - has feeder coupled to pump chamber at point exhibiting high pressure |
| US5248245A (en) * | 1992-11-02 | 1993-09-28 | Ingersoll-Dresser Pump Company | Magnetically coupled centrifugal pump with improved casting and lubrication |
| GB2290113B (en) * | 1994-05-31 | 1998-07-15 | Ingersoll Dresser Pump Co | Centrifugal pump |
| DE29610799U1 (de) * | 1996-06-20 | 1997-02-27 | Klaus Union Armaturen | Hydrodynamisches Gleitlager für einen Läufer einer Pumpe |
| US6012909A (en) * | 1997-09-24 | 2000-01-11 | Ingersoll-Dresser Pump Co. | Centrifugal pump with an axial-field integral motor cooled by working fluid |
| DE10240800B4 (de) * | 2002-08-30 | 2005-03-24 | Munsch Chemie-Pumpen Gmbh | Pumpe für chemisch aggressive Fördermedien |
| DE10322464B4 (de) | 2003-05-16 | 2012-05-03 | Ksb Ag | Spaltrohrmotorpumpe |
| DE102004019721A1 (de) * | 2004-03-18 | 2005-10-06 | Medos Medizintechnik Ag | Pumpe |
-
2011
- 2011-11-29 DE DE102011119625A patent/DE102011119625A1/de not_active Withdrawn
-
2012
- 2012-11-23 WO PCT/EP2012/004851 patent/WO2013079178A2/de not_active Ceased
- 2012-11-23 EP EP12818776.2A patent/EP2786020B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013079178A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013079178A4 (de) | 2013-11-21 |
| WO2013079178A3 (de) | 2013-10-03 |
| DE102011119625A1 (de) | 2013-05-29 |
| EP2786020B1 (de) | 2020-09-23 |
| WO2013079178A2 (de) | 2013-06-06 |
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