EP0449861A1 - Kreiselpumpenlaufrad geringer spezifischer drehzahl. - Google Patents
Kreiselpumpenlaufrad geringer spezifischer drehzahl.Info
- Publication number
- EP0449861A1 EP0449861A1 EP90900104A EP90900104A EP0449861A1 EP 0449861 A1 EP0449861 A1 EP 0449861A1 EP 90900104 A EP90900104 A EP 90900104A EP 90900104 A EP90900104 A EP 90900104A EP 0449861 A1 EP0449861 A1 EP 0449861A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impeller
- blade
- channels
- centrifugal pump
- pump impeller
- 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
- 239000007788 liquid Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005304 joining 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
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2238—Special flow patterns
- F04D29/2255—Special flow patterns flow-channels with a special cross-section contour, e.g. ejecting, throttling or diffusing effect
-
- 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
- F04D29/2222—Construction and assembly
Definitions
- the invention relates to a centrifugal pump impeller according to the preamble of the main claim.
- impellers for centrifugal pumps which operate in the area of the lowest specific speed.
- These impellers have the feature that the actual vane channels are created by cutting tools, have a straight course and have a constant circular cross section over their entire length. They have the advantage over the known impellers which have a diffuser-widening vane channel the ease of manufacture, but have the disadvantage of poor hydraulic efficiency.
- the object of the invention is to provide an increase in the pressure figure and an improvement in the efficiency of a centrifugal pump impeller for small delivery quantities and large delivery heights. This object is achieved in accordance with the characterizing part of the main claim.
- the respective blade channels are cut obliquely. This enables the different inclination variations of the impeller cover and / or blade channels. This results in a gradual opening of the vane channels, on the basis of which a favorable influence on the liquid flowing within the vane channels is possible.
- a further embodiment of the invention described in claim 5 provides that the distance between the impeller cover plate and the opposite housing wall is at most the difference between at the impeller outlet in Axial direction of measurable blade channel depth and an outward extension of the blade channel wall on the impeller outer diameter corresponds to the blade channel depth that can be determined.
- the configurations described in claims 6 and 7 relate to the shape of the vane channel openings.
- the openings of the blade channels which are continuously widening from the beginning to the outer diameter of the impeller, enable a smoothly occurring and slowly increasing impulse exchange towards the outlet.
- Fig. 1 is a perspective view of the impeller
- Fig. 2 is a front view
- Fig. 3 is a section along line III-III of Fig. 2 and Fig. 4 shows a detail of the outlet area of the impeller.
- the impeller (1) shown in FIG. 1 has a suction opening (2) through which the fastening means for the connection to a pump shaft - not shown here - are also introduced.
- the suction-side impeller cover disk (3) has a smooth surface here and has an inclination which obliquely cuts the blade channels (5) in the area of the impeller outer diameter (4).
- the blade channels (5) extend radially outward from the center of the impeller.
- the shape of the impeller channels (5>) selected here has a circular cross-section; however, other cross-sectional shapes are also conceivable.
- the blade channels (5) can be produced by bores drilled into the impeller from the outside Furthermore, there is the possibility of dividing the impeller in a plane intersecting the axis of rotation and machining the blade channel shapes into the two part halves by means of machining and then joining the two halves to form a uniform whole. can also run in the tangential direction.
- each vane channel In the area of the impeller outer diameter (4), each vane channel has an opening (6) that widens outwards. Furthermore, the vane channel width (b) that can be measured there is shown on the outer diameter. Hi It is the blade channel width reduced by the inclined section.
- the intersection (z) of this extension (x) with the cylindrical plane (y) of the outer diameter of the impeller forms a limit value, while the blade channel wall opposite this forms another limit that includes the blade channel width (b *) that can be determined.
- FIG. 2 shows a front view of the impeller (1), which can be seen how the blade channels run inside the impeller.
- the impeller (1) shown here as an example has a number and shape of blade channels (5) which, when the impeller inlet (2) is shown here, results in an overlap of the blade channels in the inlet.
- the delivery rate can also be influenced by appropriate variation of the suction opening (2) forming the impeller inlet.
- the openings (6) have a width (w) which is smaller than the maximum width of the blade channels (5).
- Channels through corresponding inclination of the blade ⁇ or the cover plate can be the size of the width (w) influence.
- Fig. 3 which corresponds to a section of III-III of Fig. 2, the course of the inclined blade channels (5) and the inclination of the impeller cover plates (3, 7) can be seen.
- the blade channels and the impeller cover disks are inclined with respect to planes (11, 12) that are perpendicular to the axis of rotation (8).
- the alternating one blade channel is inclined to the suction-side cover plate (3) and the adjacent blade channel to the pressure-side cover plate (7).
- a corresponding selection of the angle of inclination of the blade channels and / or the cover disk angle of inclination results in a cut of the blade channels in the impeller outlet area.
- a design of the actual blade channel opening (6) or its width (w) shown in FIG. 2 is thus possible in a simple manner.
- the impeller is opposite the housing wall (9) on the suction side and the housing wall (10) on the pressure side. Although these run parallel to the respective impeller cover, this is not a mandatory requirement. Different inclinations are also conceivable.
- Fig. 4 From Fig. 4 it can be seen that in the area of the openings (6) between the impeller cover disc (3) and the suction-side housing wall (9) there is a distance (s) which is smaller than the difference (d) which can be measured on the impeller outer diameter (4) Blade channel width (b) and the determinable blade channel width (b *).
- the distance (s) may at most correspond to the difference (d). A larger value would not produce the necessary effect.
- the distance ( ⁇ ) used in the exemplary embodiment is smaller than the difference (d) shown. Depending on the selected distance (s), it is possible to influence the pump characteristic in a simple manner.
- the value (b *) can be determined by extending the blade duct wall provided with the opening (6) and closest to the housing towards the outside in the direction of the outer diameter of the impeller (4). Starting from the intersection (z) between the extension (x) and the cylindrical plane (y) of the outer diameter of the impeller, the blade channel width (b *) is determined into the blade channel. This can apply to both the suction and the pressure side of the impeller.
- the distance (s) is always determined for one impeller side, i.e. on the suction or pressure side.
- the distances (s) between the suction-side housing wall and the impeller cover plate or between the pressure-side housing wall and the impeller cover plate can have the same or different dimensions. If the open vane channels are only installed on one side of the impeller, then the distance (s) corresponds at most to the difference (d). If the open vane channels were attached on both sides, the distance (s) would be based on the dimensions prevailing on the respective impeller side.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT90900104T ATE89646T1 (de) | 1988-12-23 | 1989-12-12 | Kreiselpumpenlaufrad geringer spezifischer drehzahl. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3843428A DE3843428C2 (de) | 1988-12-23 | 1988-12-23 | Kreiselpumpenlaufrad geringer spezifischer Drehzahl |
DE3843428 | 1988-12-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0449861A1 true EP0449861A1 (de) | 1991-10-09 |
EP0449861B1 EP0449861B1 (de) | 1993-05-19 |
Family
ID=6369968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90900104A Expired - Lifetime EP0449861B1 (de) | 1988-12-23 | 1989-12-12 | Kreiselpumpenlaufrad geringer spezifischer drehzahl |
Country Status (4)
Country | Link |
---|---|
US (1) | US5257910A (de) |
EP (1) | EP0449861B1 (de) |
DE (2) | DE3843428C2 (de) |
WO (1) | WO1990007650A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5290236A (en) * | 1991-09-25 | 1994-03-01 | Baxter International Inc. | Low priming volume centrifugal blood pump |
DE102006040130A1 (de) * | 2006-08-26 | 2008-02-28 | Ksb Aktiengesellschaft | Förderpumpe |
DE102007020218A1 (de) * | 2007-04-28 | 2008-10-30 | Ksb Aktiengesellschaft | Förderpumpe |
US8221070B2 (en) * | 2009-03-25 | 2012-07-17 | Woodward, Inc. | Centrifugal impeller with controlled force balance |
PL216284B1 (pl) * | 2010-03-22 | 2014-03-31 | Fundacja Rozwoju Kardiochirurgii Im Prof Zbigniewa Religi | Pompa odśrodkowa jednostrumieniowa |
WO2014137206A1 (en) * | 2013-03-07 | 2014-09-12 | Chaushevski Nikola | Rotational chamber pump |
US10634999B2 (en) * | 2014-07-24 | 2020-04-28 | Nissan Chemical Industries, Ltd. | Resin composition for forming color filter underlayer film |
US9777741B2 (en) | 2014-11-20 | 2017-10-03 | Baker Hughes Incorporated | Nozzle-shaped slots in impeller vanes |
WO2021205638A1 (ja) * | 2020-04-10 | 2021-10-14 | セイコー化工機株式会社 | 磁気浮上式ポンプ |
CN114483641B (zh) * | 2022-02-15 | 2023-06-16 | 上海工业泵制造有限公司 | 一种叶轮及应用该叶轮的水泵 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL102212C (de) * | ||||
CA644854A (en) * | 1962-07-17 | Patay Pumps And Turbines Limited | Rotary tube pumps, turbines and the like | |
DE1249693B (de) * | ||||
FR529613A (fr) * | 1920-12-21 | 1921-12-02 | Pompe centrifuge multitubulaire | |
US1986836A (en) * | 1933-01-09 | 1935-01-08 | Fairbanks Morse & Co | Method of making centrifugal pumps |
US2074650A (en) * | 1934-01-24 | 1937-03-23 | William S Holdaway | Centrifugal pump |
US1988875A (en) * | 1934-03-19 | 1935-01-22 | Saborio Carlos | Wet vacuum pump and rotor therefor |
GB575346A (en) * | 1944-03-01 | 1946-02-14 | Aluminium Plant & Vessel Co | Improvements in or relating to centrifugal pumps |
DE804064C (de) * | 1944-03-01 | 1951-04-16 | Apv Co Ltd | Fluegelrad fuer Zentrifugalpumpen, insbesondere zum Foerdern von Milch |
US2684062A (en) * | 1950-11-18 | 1954-07-20 | Rose David | Centrifugal projector |
US2956503A (en) * | 1956-02-15 | 1960-10-18 | Neidl Georg | Rotary pumps, particularly for delivery of sewage, thick slurries and the like liquids |
US3107625A (en) * | 1961-09-01 | 1963-10-22 | Walter E Amberg | Centrifugal liquid pump |
DE1453723A1 (de) * | 1963-07-19 | 1969-07-31 | Barske Ulrich Max | Kreiselpumpe,insbesondere fuer kleine bis mittlere Foerderstroeme |
SU620674A1 (ru) * | 1976-09-21 | 1978-08-25 | Предприятие П/Я Р-6603 | Центробежное колесо |
SU928080A1 (ru) * | 1980-09-25 | 1982-05-15 | Специальное Конструкторско-Технологическое Бюро Герметичных И Скважинных Насосов | Рабочее колесо центробежного насоса |
SU1052053A1 (ru) * | 1982-04-29 | 1984-10-30 | Uskov G I | Центробежный насос |
IT1187933B (it) * | 1986-02-25 | 1987-12-23 | Gilardini Spa | Pompa rotativa per liquidi |
-
1988
- 1988-12-23 DE DE3843428A patent/DE3843428C2/de not_active Expired - Fee Related
-
1989
- 1989-12-12 DE DE9090900104T patent/DE58904451D1/de not_active Expired - Lifetime
- 1989-12-12 WO PCT/EP1989/001522 patent/WO1990007650A1/de active IP Right Grant
- 1989-12-12 EP EP90900104A patent/EP0449861B1/de not_active Expired - Lifetime
- 1989-12-12 US US07/691,049 patent/US5257910A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9007650A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1990007650A1 (de) | 1990-07-12 |
DE58904451D1 (de) | 1993-06-24 |
US5257910A (en) | 1993-11-02 |
EP0449861B1 (de) | 1993-05-19 |
DE3843428C2 (de) | 1993-12-09 |
DE3843428A1 (de) | 1990-07-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69113616T2 (de) | Seitenkanalpumpe. | |
DE10327574B4 (de) | Laufrad für eine Kraftstoffpumpe | |
DE1817430A1 (de) | Regenerativkompressor | |
DE2551614A1 (de) | Axial kurzer axialventilator | |
DE69101953T2 (de) | Mehrphasige Pump- oder Kompressionsvorrichtung und ihre Anwendung. | |
DE2744366A1 (de) | Laufrad fuer einen radialen turboverdichter | |
DE10327573B4 (de) | Einstufige Strömungspumpe | |
EP0752066B1 (de) | Einrichtung zur geräuschreduzierung bei kreiselpumpen | |
DE102004043036A1 (de) | Strömungsarbeitsmaschine mit Fluidentnahme | |
DE3843428C2 (de) | Kreiselpumpenlaufrad geringer spezifischer Drehzahl | |
DE3147513C3 (de) | ||
DE1453730B2 (de) | Radialkreiselpumpenlaufrad | |
DE69106179T2 (de) | Diagonal-Verdichter. | |
DE10220643A1 (de) | Flügelrad für eine Flüssigkeitspumpe | |
DE4143466C2 (de) | Steuerscheibe für Flügelzellenpumpe | |
DE3844158A1 (de) | Kaskadenpumpenmechanismus | |
DE10314425B4 (de) | Leitvorrichtung für ein in Blechbauweise ausgeführtes Gehäuse einer Kreiselpumpe | |
EP0133306B1 (de) | Laufrad für eine Durchströmturbine | |
DE2434397C2 (de) | Radialturbine | |
DE3028775C2 (de) | ||
DE4109149C2 (de) | Steuerscheibe für Flügelzellenpumpe | |
DE68913409T2 (de) | Laufrad. | |
EP1538369A1 (de) | Ölleitkontur in einem Getriebegehäuse | |
DE2327125B2 (de) | Axialventilator mit gehaeuse | |
DE19510812A1 (de) | Kreiselpumpe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19901227 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19921105 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
REF | Corresponds to: |
Ref document number: 89646 Country of ref document: AT Date of ref document: 19930615 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 58904451 Country of ref document: DE Date of ref document: 19930624 |
|
ITF | It: translation for a ep patent filed | ||
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19930802 |
|
EPTA | Lu: last paid annual fee | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
EAL | Se: european patent in force in sweden |
Ref document number: 90900104.2 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20021125 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20021219 Year of fee payment: 14 Ref country code: BE Payment date: 20021219 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 20021220 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20021223 Year of fee payment: 14 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20021230 Year of fee payment: 14 Ref country code: LU Payment date: 20021230 Year of fee payment: 14 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031212 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031212 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031213 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031231 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031231 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031231 |
|
BERE | Be: lapsed |
Owner name: *KSB A.G. Effective date: 20031231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040701 |
|
EUG | Se: european patent has lapsed | ||
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20031212 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 20040701 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051212 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20081211 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20081209 Year of fee payment: 20 |