EP1945955A1 - Fluidpumpe - Google Patents
FluidpumpeInfo
- Publication number
- EP1945955A1 EP1945955A1 EP06806140A EP06806140A EP1945955A1 EP 1945955 A1 EP1945955 A1 EP 1945955A1 EP 06806140 A EP06806140 A EP 06806140A EP 06806140 A EP06806140 A EP 06806140A EP 1945955 A1 EP1945955 A1 EP 1945955A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- pressure
- pump
- motor housing
- internal combustion
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims description 13
- 101100495769 Caenorhabditis elegans che-1 gene Proteins 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/04—Helico-centrifugal pumps
-
- 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
- F04D13/0626—Details of the can
Definitions
- the invention relates to a fluid pump for internal combustion engines with an electric motor having a rotor arranged in a motor housing and a stator, wherein the rotor is at least rotationally fixed on a drive shaft, an impeller which is mounted on the drive shaft, at least one stator, which is arranged in the flow direction of the fluid to be conveyed behind the impeller, and a pump housing, which surrounds the motor housing, the impeller and the stator and on which at the axial ends opposite a discharge nozzle and a suction nozzle are formed.
- Fluid pumps for internal combustion engines are used in particular as coolant pumps in the cooling circuit. Whereas in the past there was a direct coupling to the engine speed and the pumps were driven by belt drives or chain drives, in newer engines variable speed electric coolant pumps with split tubes are increasingly used to realize a modern heat management. An abundance in the flow rate can thus be prevented, so that, for example, a faster heating of the internal combustion engine after the cold start is possible.
- the flow rate can be regulated according to the actually required cooling capacity.
- Such a pump is known for example from MTZ no.11 Jg.2005 (S. 872-877).
- This electric coolant pump comprises an EC motor as a drive unit and has a pump head with axial inlet and tangential outlet.
- the components used here and in particular housing parts are relatively large for the power consumption of the pump, since a relatively large drive motor must be used.
- an electric fluid pump is disclosed in Halbaxialbauweise, with the same power consumption of the electric motor, this can be made smaller to achieve higher speeds, so that with smaller size equal flow rates can be achieved. It has a completely encapsulated electric motor, on whose outer side a stator is formed. In the flow direction behind the stator, however, obstacles to carry out the electrical contact with the electronics unit arise.
- the pump housing is made in two parts and has different gradations and through holes for the electrical contact. Depending on the desired maximum flow rate different electric motors and housings have to be designed.
- a pressure-side motor housing part has a Nachleitapparat.
- this Nachleitapparat almost complete freedom from twist can be achieved, so that the kinetic energy of the Tangentialkom- component of the flow velocity is converted with little friction losses in pressure energy. This increases the efficiency of the fluid pump. To achieve an equal flow rate, the size of the electric motor can thus be reduced.
- the Nachleitapparat is formed by return vanes, which are manufactured in one piece with the pressure-side motor housing part and formed on the surface, whereby no additional components are required and the freedom from twist is ensured with low energy losses. The return vanes serve to convert the tangential flow component into an axial flow component without higher pressure losses. The efficiency is increased and components saved.
- the pressure-side motor housing part is narrowing in the flow direction and surrounded by a correspondingly shaped pressure-side pump housing part.
- the return vanes are limited at their radial ends by the pump housing, so that an overflow of the blades is reliably prevented.
- grooves are formed in the pressure-side pump housing part into which the radial ends of the return vanes extend. This in turn reduces the flow resistance by preventing the blades from overflowing, and fixes the position of the motor housing part to the pump housing part, again avoiding assembly errors, since the grooves serve as guide grooves during assembly.
- the pressure-side motor housing part by sliding the pressure-side pump housing part on the pressure side motor housing part with the interposition of a seal in a receiving opening of an axially adjoining motor housing part displaceable, wherein fastening the pressure-side pump housing part to a axially adjacent motor housing part radially outboard pump housing part pressure-side motor housing part is fixed.
- Fasteners must not be used accordingly for the attachment of the pressure-side motor housing part. Alone by the attachment of the pump housing, a tight attachment of the motor housing is guaranteed, so that the assembly cost decreases.
- the pressure-side pump housing part has a flange, via which the fluid pump can be fastened to an internal combustion engine. It is produced by the simplicity of the pump housing parts of the discharge nozzle in one piece with the flange, so that the fluid pump can be flanged without additional intermediate lines idrekt, for example, to a motor housing.
- a plurality of fluid pumps are connected in series via a flange connection, wherein the flanges are formed on the pressure-side pump housing part of the first and on a suction-side pump housing part of a downstream pump.
- a series connection without additional components to achieve a higher required maximum volume flow. This is possible in particular by the swirl freedom in the outlet through the Nachleitapparat.
- the figure shows a side view of a fluid pump according to the invention in a sectional view.
- the fluid pump shown in the figure which is suitable in particular as a coolant pump in internal combustion engines, is driven by an electronically commutated electric motor 1, which consists of a stator 2 and one on a drive shaft 3 arranged rotor 4 consists.
- an impeller 5 is arranged, which is designed in a semi-axial design and by the rotation of the fluid to be delivered, in particular a coolant from a suction nozzle 6 is conveyed substantially axially through the fluid pump to a discharge nozzle 7.
- the electric motor 1 is arranged in a motor housing which consists of a first suction-side motor housing part 8 and a second pressure-side motor housing part 9.
- the suction-side motor housing part 8 Through the suction-side motor housing part 8, the drive shaft 3 leads leads, on which the impeller 5 is arranged.
- the suction-side motor housing part 8 has a bore 10, in which a first bearing 11 for supporting the drive shaft 3 is arranged.
- the spacer serves to extend the distance of the first bearing 11 to a second bearing 15, whereby an angular error in the manufacture of the bore 10 for receiving the bearing can be better compensated.
- a rotor laminated core 16 is arranged on the shaft, which has slits extending in the axial direction for receiving magnets 17, which correspond in a known manner to a stator winding 18.
- the rotor 4 is bounded axially and radially by a capsule 19.
- the stator winding 18 is wound on an insulating body 20 and delimits axially in a known manner a laminated stator core 21.
- This laminated stator core 21 is connected in a form-fitting manner with a return plate 22 for closing the magnetic circuit.
- This return plate 22 abuts against a stop 23, which is formed on an inner surface of the first suction-side motor housing part 8.
- the rotor 4 is separated from the stator 2 by a split tube 24, which rests on the suction side of the pump in a corresponding receiving opening 25 of the suction-side motor housing part 8 and the opposite axial end is in turn arranged in a corresponding receiving opening 26 of the pressure-side motor housing part 9.
- the stator 2 with its sensitive winding 18 is thus located in a NEM through the two motor housing parts 8 and 9 and the split tube 24 separated dry space.
- a closure member 27 is arranged, in which the second bearing 15 is arranged for mounting the drive shaft 3. Axially, this closure member 27 is secured by the pressure-side motor housing part 9, which is arranged with the interposition of a seal 28 in a receiving opening 29 of the suction-side motor housing part 8.
- the support ribs 31 are shaped such that they also serve as a stator, so that no additional stator immediately behind the impeller 5 is necessary. This allows a simple one-piece production of the suction-side motor housing 8 with the support ribs and a cylindrical radially outer pump housing part 32. This pump housing part 32 surrounds the radially inner motor housing part 8 and the entire electric motor. 1
- the suction side in the flow direction expanding pump housing part 33 comprises the suction nozzle 6 which is designed as a cylindrical portion 35 and an adjoining widening portion 36.
- the semi-axial impeller 5 of the fluid pump is arranged in the transition region 37 between the first portion 35th and the second portion 36.
- the expanding section 36 is followed by another short cylindrical section 38 of larger diameter, in order to achieve a clean transition to the cylindrical pump housing part 32.
- grooves 39 are formed in the identical pump housing parts 33, 34, into which radial ends 40 of return vanes 41 engage.
- These return blades 41 serve as a Nachleitapparat 42 by means of which behind the discharge nozzle 7 a completely twist-free flow is achieved.
- This Nachleitapparat 42 is formed on a surface 43 of the pressure-side motor housing part 9 and is therefore necessary that the serving as a stator support ribs 31 are made relatively short and in this area of the fluid pump complete swirl reduction is not achieved in the rule.
- the pressure-side motor housing part 9 can be produced in plastic, while the suction-side motor housing part can be made as far as possible in aluminum and is therefore more expensive. An embodiment of the stator in this area would require a relatively expensive manufacturing process, while the Nachleitapparat the plastic housing part 9 is simple and inexpensive to manufacture.
- the position of the pressure-side pump housing part 34 to the pressure-side motor housing part 9 is determined by the grooves 39.
- the pressure-side pump housing part 34 via the return vanes 40, the motor housing part 9 against the motor housing part 8 and into the receiving openings 29 of the motor housing part 8. Furthermore, this is the Motor housing part 9 pressed against the closure member 27 and the can 24, so that an additional attachment of the two motor housing parts 8, 9 is not necessary.
- the fluid to be delivered in particular the coolant
- the impeller 5 which consists of a plurality of impeller blades 44
- a part of the fluid flows behind the impeller 5 through holes 45 which are formed in the suction-side motor housing part 8.
- a further part of the fluid also flows behind the impeller 5 as far as the drive shaft 3 and here between the first bearing 11 and the drive shaft 3, so that the existing slide bearing is adequately lubricated.
- coolant is in the rotor chamber, which in turn is continued between the drive shaft 3 and the second bearing 15 and by non-visible holes in the closure member 27 in a space 46 behind it.
- This space 46 is connected via a further bore 47, which runs axially through the pressure-side motor housing part 9, to the space behind it.
- This semi-axial pump is characterized in particular by the fact that it is very small to build, since the same power consumption an equal capacity with a smaller motor size and increased speed compared to known pumps can be achieved. This is achieved in particular by the extremely reduced pressure losses in such a design, but also by the semi-axial design.
- Such a pump can be produced very inexpensively, since there are fewer differently designed components. This simultaneously reduces possible errors during assembly. By omitting the additional guide of and the integration of the electrical contact in the support ribs additional components are avoided and reduces pressure losses. It is thus achieved a total of higher efficiency.
- the suction-side pump housing part 33 it is also conceivable, by the simplicity, in particular of the suction-side pump housing part 33, to carry this integrally with valve housing parts, so that the pump housing part 33 has, for example, a receptacle for a bypass or an integrated thermostatic valve. Also, parts of the housing of a sliding ring valve could be made in one piece with the suction-side pump housing part 33.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005054027A DE102005054027A1 (de) | 2005-11-10 | 2005-11-10 | Fluidpumpe |
| PCT/EP2006/009763 WO2007054171A1 (de) | 2005-11-10 | 2006-10-10 | Fluidpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1945955A1 true EP1945955A1 (de) | 2008-07-23 |
| EP1945955B1 EP1945955B1 (de) | 2010-03-10 |
Family
ID=37663301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06806140A Not-in-force EP1945955B1 (de) | 2005-11-10 | 2006-10-10 | Fluidpumpe |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20090155100A1 (de) |
| EP (1) | EP1945955B1 (de) |
| JP (1) | JP2009515086A (de) |
| CN (1) | CN101365884B (de) |
| AT (1) | ATE460587T1 (de) |
| DE (2) | DE102005054027A1 (de) |
| WO (1) | WO2007054171A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004022141A1 (de) * | 2004-05-05 | 2005-11-24 | Heidelberger Druckmaschinen Ag | Vorrichtung zum Fördern und gleichzeitigen Ausrichten von Bogen |
| US9261096B2 (en) * | 2011-07-29 | 2016-02-16 | Regal Beloit America, Inc. | Pump motor combination |
| JP5958442B2 (ja) * | 2013-09-17 | 2016-08-02 | 株式会社デンソー | 液体ポンプ |
| DE102014202564B4 (de) | 2014-02-12 | 2025-06-12 | Volkswagen Aktiengesellschaft | Fluidpumpe und Kühlmittelfördereinrichtung für einen Verbrennungsmotor mit einer solchen |
| DE102014114801B4 (de) * | 2014-10-13 | 2017-08-31 | Lutz Pumpen Gmbh | Strömungsmaschine mit halbaxialem Laufrad |
| JP7399279B2 (ja) * | 2019-10-30 | 2023-12-15 | フローサーブ・プライベート リミテッド | 一体型でモジュール式のモータまたは発電機、並びに同軸の流体流れを備える小型でモジュール式のポンプまたはタービン |
Family Cites Families (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1949796A (en) * | 1931-08-29 | 1934-03-06 | Himmelwerk Ag | Pump or impeller |
| US2824520A (en) * | 1952-11-10 | 1958-02-25 | Henning G Bartels | Device for increasing the pressure or the speed of a fluid flowing within a pipe-line |
| US2855141A (en) * | 1955-11-25 | 1958-10-07 | Jacobus C Van Rijn | Two-piece cantilever fan and motor |
| US2968249A (en) * | 1958-09-04 | 1961-01-17 | Borg Warner | Axial flow apparatus |
| US3102679A (en) * | 1962-01-15 | 1963-09-03 | Loren Cook Company | Centrifugal impeller units |
| US3135212A (en) * | 1962-03-29 | 1964-06-02 | Symington Wayne Corp | Submersible pump |
| US3244106A (en) * | 1963-09-30 | 1966-04-05 | North American Aviation Inc | High pressure pumping device |
| US3398694A (en) * | 1966-08-11 | 1968-08-27 | Marine Constr & Design Co | Submersible pump device for net brailing |
| DE2159025C2 (de) * | 1971-11-29 | 1982-12-30 | Robert Bosch Gmbh, 7000 Stuttgart | Kraftstofförderaggregat, bestehend aus einer Seitenkanalpumpe und einem Elektromotor |
| US3826595A (en) * | 1973-03-07 | 1974-07-30 | Lucas Industries Ltd | Electrically driven pump |
| FR2222885A5 (de) * | 1973-03-23 | 1974-10-18 | Lucas Industries Ltd | |
| US4213745A (en) * | 1978-09-11 | 1980-07-22 | Roberts Samuel A | Pump for central heating system |
| US5487644A (en) * | 1987-02-13 | 1996-01-30 | Ishigaki Mechanical Industry Co., Ltd | Pump having a single or a plurality of helical blades |
| EP0566087B1 (de) * | 1992-04-14 | 1997-02-12 | Ebara Corporation | Pumpengehäuse in Blechbauweise |
| US5350281A (en) * | 1993-01-26 | 1994-09-27 | Sundstrand Corporation | Fan with secondary air passage for motor cooling |
| JP2958218B2 (ja) * | 1993-07-16 | 1999-10-06 | 株式会社荏原製作所 | ポンプ |
| JP3077490B2 (ja) * | 1993-12-28 | 2000-08-14 | 株式会社荏原製作所 | ポンプ組立体 |
| US6056518A (en) * | 1997-06-16 | 2000-05-02 | Engineered Machined Products | Fluid pump |
| DE59908003D1 (de) * | 1998-09-15 | 2004-01-22 | Wilo Ag | Rohrpumpe |
| US6135098A (en) * | 1998-10-06 | 2000-10-24 | Engineered Machine Products, Inc. | Flow-through controllable air charger |
| JP3958484B2 (ja) * | 2000-01-28 | 2007-08-15 | 株式会社荏原製作所 | 水中モータポンプ |
| CN2436703Y (zh) * | 2000-04-27 | 2001-06-27 | 赖轩明 | 分压式离心泵 |
| US6659737B2 (en) * | 2001-02-05 | 2003-12-09 | Engineered Machined Products, Inc. | Electronic fluid pump with an encapsulated stator assembly |
| JP2002235689A (ja) * | 2001-02-09 | 2002-08-23 | Tsurumi Mfg Co Ltd | ブースタポンプおよびその使用方法 |
| US6761532B2 (en) * | 2001-03-14 | 2004-07-13 | Vascor, Inc. | Touch down of blood pump impellers |
| DE20201183U1 (de) * | 2002-01-25 | 2002-07-04 | Allweiler Ag, 78315 Radolfzell | Pumpe mit einen Antriebsmotor durchsetzender Pumpenwelle |
| US6702555B2 (en) * | 2002-07-17 | 2004-03-09 | Engineered Machined Products, Inc. | Fluid pump having an isolated stator assembly |
| US6843638B2 (en) * | 2002-12-10 | 2005-01-18 | Honeywell International Inc. | Vane radial mounting apparatus |
| JP4432474B2 (ja) * | 2003-11-27 | 2010-03-17 | ダイキン工業株式会社 | 遠心送風機の羽根車及びそれを備えた遠心送風機 |
-
2005
- 2005-11-10 DE DE102005054027A patent/DE102005054027A1/de not_active Withdrawn
-
2006
- 2006-10-10 EP EP06806140A patent/EP1945955B1/de not_active Not-in-force
- 2006-10-10 AT AT06806140T patent/ATE460587T1/de active
- 2006-10-10 CN CN200680050712.8A patent/CN101365884B/zh not_active Expired - Fee Related
- 2006-10-10 WO PCT/EP2006/009763 patent/WO2007054171A1/de not_active Ceased
- 2006-10-10 JP JP2008539274A patent/JP2009515086A/ja active Pending
- 2006-10-10 DE DE502006006411T patent/DE502006006411D1/de active Active
- 2006-10-10 US US12/093,405 patent/US20090155100A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007054171A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007054171A1 (de) | 2007-05-18 |
| EP1945955B1 (de) | 2010-03-10 |
| CN101365884A (zh) | 2009-02-11 |
| JP2009515086A (ja) | 2009-04-09 |
| DE102005054027A1 (de) | 2007-05-16 |
| CN101365884B (zh) | 2011-09-28 |
| DE502006006411D1 (de) | 2010-04-22 |
| ATE460587T1 (de) | 2010-03-15 |
| US20090155100A1 (en) | 2009-06-18 |
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