EP1977114A1 - Laufrad - Google Patents
LaufradInfo
- Publication number
- EP1977114A1 EP1977114A1 EP07702382A EP07702382A EP1977114A1 EP 1977114 A1 EP1977114 A1 EP 1977114A1 EP 07702382 A EP07702382 A EP 07702382A EP 07702382 A EP07702382 A EP 07702382A EP 1977114 A1 EP1977114 A1 EP 1977114A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- width
- closed
- design
- flow
- 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
- 238000001816 cooling Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 16
- 239000004033 plastic Substances 0.000 description 10
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005495 investment casting Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007528 sand casting Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/24—Vanes
- F04D29/242—Geometry, shape
Definitions
- the invention relates to closed impellers for centrifugal pumps for the promotion of homogeneous fluids, in particular for use in automotive cooling systems.
- DE-PS 843 812 a design of an impeller for centrifugal pumps to promote inhomogeneous substances (substances with increased gas or solids content) described above, which is characterized by a special channel and impeller design by means of the usual entmischende effect of the centripetal field of the centrifugal pumps.
- This arrangement presented there is characterized in particular by at most four main blades between which mixing blades are arranged on the outer periphery.
- the channel width initially remains the same in the region of the flow inlet and then tapers towards the flow outlet.
- the open impeller designs are usually made in one piece in the plastic injection molding process, for example, from a thermoplastic or a thermoset material.
- the closed design of the wheels can be made of plastic.
- closed wheels with one or two-dimensional curved blades but also with the help of split slides for example, be made in one piece as plastic injection molded parts. Although it then eliminates a step of assembling the cover plate, but then inevitably occur significantly higher tooling costs.
- closed impellers with spatially curved blades compared to closed impellers with two-dimensionally curved blades have a larger specific diameter, a poorer suction behavior and also an increased cavitation hazard at the same delivery rate.
- Impellers with spatially curved blades proposed, which in addition to precisely defined blade shapes, a high blade surface quality, good concentricity properties, high reliability, minimized
- the mostly used in series production impeller material plastic allows in addition to a cost-effective production of the individual components and a relatively inexpensive achievable, high surface quality, low frictional resistance, high corrosion resistance to the fluid and a high resistance to
- the cavitation arises in the operating condition of the impeller in areas of low pressure level, i. at a pressure below the vapor pressure of the
- cavitation erosion always occurs only in the areas of elevated pressure, i. mostly after the wheel up.
- Downstream components and assemblies are the pump housing and / or by integrating the pump into the engine, the timing case cover, the cylinder crankcase, the cylinder head oa ..
- the aluminum casting has a much poorer resistance to cavitation erosion, so that cavitation building up in areas with low pressure levels in the impeller leads to damage due to cavitation erosion on the components and assemblies made of cast aluminum downstream of the impeller, which then become longer Continuous operation to a total failure of this
- the invention is therefore based on the object to overcome the aforementioned disadvantages of the prior art and to develop a novel design of closed impellers for centrifugal pumps for the promotion of homogeneous fluids, especially for use in coolant pumps, which allows both closed wheels with single curved Shovels, as well as closed wheels with spatially curved blades cost to manufacture, to minimize the effects of Kavitationsverschl foundedes on the impeller downstream components / assemblies, while improving the hydraulic efficiency and the suction behavior of the respective impeller design significantly.
- this object is achieved by means of an impeller in a closed design for centrifugal pumps which is characterized in that the width of the blade channel in the meridian section continuously increases from the flow entering the impeller to the flow outlet from the impeller such that the ratio of the outlet width (b2) to Entry width (b1) is in the range between 1.01 and 1.2.
- the exit width (b2) can be dimensioned professionally (for example according to the "speed triangle"), whereby the larger exit width can be compensated by other parameters such as a smaller exit angle, the blade thickness, etc. ,
- the ratio of the outlet width (b2) to the inlet width (b1) should always be in the range between 1, 01 and 1, 2, since recirculation increases in the impeller as the outlet width (b2) increases, which then leads to a separation of the flow.
- Figure 1 the top view of a Radialschaufelrad
- Figure 2 the side view of a radial blade wheel of Figure 1 in section at A-A according to a design according to the
- Figure 3 the side view of the radial blade wheel of Figure 1 in section in A-A according to the inventive design
- Figure 4 the top view of a Francis paddle wheel
- Figure 5 the side view of a Francis Schaufelrades of Figure 4 in section at B-B according to a design according to the inventive design
- FIG. 6 shows the side view of the Francis blade wheel according to FIG. 4 in section at BB according to the construction according to the invention
- FIG. 7 shows the top view of a diagonal vane wheel
- FIG. 8 the side view of a diagonal paddle wheel according to FIG
- FIG. 1 shows a plan view of an impeller 1 designed as a radial impeller with simply curved blades 3.
- FIG. 2 now shows the side view of a radial blade wheel according to FIG. 1 in section in A-A according to what has been described in DE 197 42 023 B4
- FIG 3 is the side view of the radial blade wheel of Figure 1 in
- Blades 3 trained impeller 1 shown in plan view.
- FIG. 5 now shows the side view of a Francis paddle wheel
- FIG. 6 the side view of the Francis blade wheel according to FIG. 4 is shown in section at BB according to the design according to the invention, in one piece, with the bottom 2, the blades 3 and the cover 4, the exit width (contrary to the usual dimensioning in the prior art) b2 according to the invention is increased compared to the entrance width b1.
- a vane wheel 1 designed as a diagonal vane wheel with spatially curved blades 3 is shown in plan view.
- FIG. 8 now shows the side view of a diagonal paddle wheel according to FIG.
- FIG. 9 the side view of the diagonal paddle wheel according to FIG. 7 is shown in section at CC according to the design according to the invention, in one piece, with the bottom 2, the blades 3 and the cover 4, the exit width (contrary to the usual dimensioning in the prior art) b2 according to the invention is increased compared to the entrance width b1.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006003727A DE102006003727A1 (de) | 2006-01-26 | 2006-01-26 | Laufrad |
PCT/DE2007/000104 WO2007085231A1 (de) | 2006-01-26 | 2007-01-20 | Laufrad |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1977114A1 true EP1977114A1 (de) | 2008-10-08 |
EP1977114B1 EP1977114B1 (de) | 2010-06-16 |
Family
ID=37890748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07702382A Active EP1977114B1 (de) | 2006-01-26 | 2007-01-20 | Laufrad |
Country Status (6)
Country | Link |
---|---|
US (1) | US8469671B2 (de) |
EP (1) | EP1977114B1 (de) |
JP (1) | JP4927097B2 (de) |
AT (1) | ATE471458T1 (de) |
DE (3) | DE102006003727A1 (de) |
WO (1) | WO2007085231A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2333397C2 (ru) * | 2006-08-02 | 2008-09-10 | Шлюмбергер Текнолоджи Б.В. | Ступень погружного центробежного насоса |
US8550039B2 (en) * | 2010-10-28 | 2013-10-08 | GM Global Technology Operations LLC | Pump assembly and method of manufacturing same |
DE102010063264A1 (de) * | 2010-12-16 | 2012-06-21 | Mahle International Gmbh | Sammelbehälter |
SE536929C2 (sv) * | 2011-05-09 | 2014-11-04 | Luossavaara Kiirunavaara Ab | Rotormaskin avsedd att arbeta som pump eller omrörare samt en impeller för en sådan rotormaskin |
US9309895B2 (en) | 2012-06-18 | 2016-04-12 | Kennametal Inc. | Closed impeller with a coated vane |
CN103452900B (zh) * | 2013-09-18 | 2015-06-10 | 成都市永益泵业有限公司 | 一种可提高泵效率的离心叶轮几何参数优化设计方法 |
DE102014201487B3 (de) * | 2014-01-28 | 2015-03-05 | Bühler Motor GmbH | Kreiselpumpenlaufrad |
WO2016117709A1 (en) * | 2015-01-19 | 2016-07-28 | Ebara Corporation | Centrifugal impeller for fluid-operated pumps, and method for manufacturing the impeller |
ITUB20150308A1 (it) * | 2015-05-04 | 2016-11-04 | Ebara Corp | Struttura di girante, particolarmente per pompe centrifughe |
CN106949088A (zh) * | 2017-05-20 | 2017-07-14 | 江苏斯别特制泵有限公司 | 一种特殊改进的大功率潜水混流泵叶轮 |
CN107747562A (zh) * | 2017-10-27 | 2018-03-02 | 珠海格力电器股份有限公司 | 混流风轮的叶片组件、混流风轮及具有混流风轮的装置 |
RU187738U1 (ru) * | 2018-05-25 | 2019-03-15 | Общество с ограниченной ответственностью "Ижнефтепласт" | Рабочее колесо центробежного насоса |
KR102234649B1 (ko) * | 2019-04-29 | 2021-03-31 | 강원대학교산학협력단 | 밀폐형 원심펌프 임펠러 |
CN111396351A (zh) * | 2020-04-27 | 2020-07-10 | 西安航空学院 | 一种扩口增压的超低比转速离心泵叶轮 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE195747C (de) * | 1905-12-10 | 1908-02-24 | Neumann Fritz | Laufräder von zentrifugalpumpen, bei denen die schaufeln gekrümmt sind und die eintrittshöhe grösser als die austrittshöhe ist |
CH269595A (de) * | 1946-12-20 | 1950-07-15 | Egger Emile | Zentrifugalpumpe. |
DE843812C (de) * | 1947-10-25 | 1952-07-14 | Sulzer Ag | Kreiselpumpe fuer nicht homogene Foerderstoffe |
DE897801C (de) * | 1949-09-04 | 1953-11-23 | Pleuger Kommanditgesellschaft | Laufrad fuer Kreiselpumpen |
DE1176485B (de) * | 1958-01-31 | 1964-08-20 | Eta Corp G M B H | Kreiselradmaschine, insbesondere Kreiselrad-pumpe, mit im Meridianschnitt sich erweiterndem Stroemungsweg |
US3775024A (en) * | 1970-05-20 | 1973-11-27 | Airtex Prod Division Of United | Submersible fuel pump |
US4253798A (en) * | 1978-08-08 | 1981-03-03 | Eiichi Sugiura | Centrifugal pump |
US4666373A (en) * | 1986-03-20 | 1987-05-19 | Eiichi Sugiura | Impeller for rotary fluid machine |
JPS6360095A (ja) * | 1986-08-29 | 1988-03-16 | Tokushu Denkyoku Kk | 硬化肉盛金属 |
DE3632259C2 (de) * | 1986-09-23 | 1995-11-23 | Eaton Gmbh | Verfahren zur Herstellung eines Pumpenlaufrades für eine Kühlmittelpumpe in einem Kraftfahrzeug |
AUPN715595A0 (en) | 1995-12-14 | 1996-01-18 | Warman International Limited | Improved centrifugal pump |
JP4016441B2 (ja) * | 1996-10-02 | 2007-12-05 | 株式会社ジェイ・エム・エス | ターボ式血液ポンプ |
DE19742023B4 (de) | 1997-09-24 | 2006-07-13 | Beez, Günther, Dipl.-Ing. | Laufrad |
US6413039B1 (en) * | 2000-06-01 | 2002-07-02 | Uis, Inc | Impeller for coolant pumps |
-
2006
- 2006-01-26 DE DE102006003727A patent/DE102006003727A1/de not_active Withdrawn
-
2007
- 2007-01-20 JP JP2008551644A patent/JP4927097B2/ja not_active Expired - Fee Related
- 2007-01-20 US US12/223,010 patent/US8469671B2/en active Active
- 2007-01-20 DE DE112007000708T patent/DE112007000708A5/de not_active Withdrawn
- 2007-01-20 WO PCT/DE2007/000104 patent/WO2007085231A1/de active Application Filing
- 2007-01-20 EP EP07702382A patent/EP1977114B1/de active Active
- 2007-01-20 DE DE502007004127T patent/DE502007004127D1/de active Active
- 2007-01-20 AT AT07702382T patent/ATE471458T1/de active
Non-Patent Citations (1)
Title |
---|
See references of WO2007085231A1 * |
Also Published As
Publication number | Publication date |
---|---|
ATE471458T1 (de) | 2010-07-15 |
DE112007000708A5 (de) | 2008-12-24 |
DE502007004127D1 (de) | 2010-07-29 |
US20090016895A1 (en) | 2009-01-15 |
US8469671B2 (en) | 2013-06-25 |
EP1977114B1 (de) | 2010-06-16 |
JP4927097B2 (ja) | 2012-05-09 |
JP2009524759A (ja) | 2009-07-02 |
WO2007085231A1 (de) | 2007-08-02 |
DE102006003727A1 (de) | 2007-08-02 |
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