WO2000066893A1 - Roue a ailettes ouverte pour pompes centrifuges - Google Patents

Roue a ailettes ouverte pour pompes centrifuges Download PDF

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Publication number
WO2000066893A1
WO2000066893A1 PCT/DE2000/001264 DE0001264W WO0066893A1 WO 2000066893 A1 WO2000066893 A1 WO 2000066893A1 DE 0001264 W DE0001264 W DE 0001264W WO 0066893 A1 WO0066893 A1 WO 0066893A1
Authority
WO
WIPO (PCT)
Prior art keywords
web plate
open impeller
blade
impeller according
blade elements
Prior art date
Application number
PCT/DE2000/001264
Other languages
German (de)
English (en)
Inventor
Dieter Hoffmeier
Original Assignee
Oase-Pumpen Wübker Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oase-Pumpen Wübker Gmbh & Co. Kg filed Critical Oase-Pumpen Wübker Gmbh & Co. Kg
Priority to AU53887/00A priority Critical patent/AU5388700A/en
Priority to EP00938505A priority patent/EP1173678A1/fr
Priority to DE10081167T priority patent/DE10081167D2/de
Publication of WO2000066893A1 publication Critical patent/WO2000066893A1/fr

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
    • 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
    • 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
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures

Definitions

  • the present invention relates to an open impeller for a centrifugal pump or the like. , With a hub part, in which a central hub bore is formed, and with a first blade element, which are connected on the hub side to the hub part.
  • Such an impeller is e.g. B. from DE 44 24 996 AI known.
  • the open design of such an impeller is primarily inexpensive and also leads to better accessibility, e.g. B. for the purpose of cleaning, machining or the like.
  • the hydraulic efficiency of such an open impeller is worse than in the case of a closed impeller due to the gap loss resulting from the pressure difference between the front side of the blade and the rear side of the blade.
  • the object of the present invention is therefore to create an open impeller for a centrifugal pump which acts like a closed impeller.
  • the object is achieved in that a central web plate is provided, on which blade elements are supported on both sides.
  • the open impeller acts like a closed impeller at a pressure height of ⁇ 10m.
  • the suction effect takes place on both sides of the center web plate, so that there is no one-sided axial thrust.
  • the impeller remains an open impeller with the advantages of easy access and inexpensive manufacture mentioned above.
  • the cheaper production compared to a closed impeller essentially results from the fact that the Large open impeller can be manufactured in one piece, whereas closed impellers usually require two or more parts.
  • central web plate is arranged at a radial distance from the hub part and delimits an annular gap with the hub part. As a result, the liquid to be pumped can easily reach both sides of the center web plate.
  • a further advantage according to claim 5 is that a second blade element is provided, which is arranged in each case between two first blade elements of the center web plate and ends on the hub side in front of the annular gap. This improves the number of blades and thus the smooth running.
  • Another advantage according to claim 6 is that two first blade elements are arranged on both sides of the central web plate in a mirror-symmetrical manner. This leads to a favorable compensation of the axial thrust on both sides.
  • Another advantage according to claim 8 is that the first blade elements are offset from one another in the direction of rotation on both sides of the center web plate. This further improves the smoothness of the movement, since the offset means that the number of blades acting on both sides (number of half blades) increases in the direction of rotation.
  • Another advantage according to claim 9 is that the second blade elements are offset from one another in the direction of rotation on both sides of the center web plate. This further improves the smoothness of the operation, since the offset causes the number of blades acting on both sides (number of half blades) to increase in the direction of rotation.
  • Another advantage according to claim 10 is that a blade width on a suction side of the center web plate is wider than on a back side of the center web plate opposite the suction side. The axial thrust to the suction side can be determined by the formation of different wide blade elements depending on the side of the center web plate.
  • Another advantage according to claim 11 is that the radial expansion of the center web plate is greater than the maximum radial expansion of one of the blade elements. As a result, the impeller behaves aerodynamically.
  • Figure 1 is a schematic, perspective view of an impeller of the present invention from a first side. 2 shows a schematic, perspective view of the impeller from FIG. 1;
  • FIG. 3 shows a schematic illustration of a detail of the impeller in cross section, according to a second embodiment
  • Fig. 4 shows a schematic representation of a further detail of the impeller in cross section, in a third embodiment.
  • an impeller 1 is shown from a first and second side. Since both sides are of identical design, the impeller 1 is only described on the basis of one side.
  • a hub bore 5 is formed in a hub part 3.
  • a central web plate 7 with a first side 7.1 and a second side 7.2 is arranged concentrically and at a radial distance from the hub part 3.
  • the center web plate 7 lies on a central plane of the hub part 3, so that an annular gap 9 is formed due to the distance between the two components.
  • a group of identically shaped, first blade elements 11 is connected to the hub part 3.
  • Each first blade element 11 has the shape of a circular arc section and is arranged at the same distance and in the same orientation to the respectively adjacent blade element 3 around the hub bore 5.
  • each first blade element 11 sits on the hub part 3 and is of uniform design over a section in the area of the annular gap 9.
  • the first blade element 11 bifurcates and is supported with both fork parts 11.1 and 11.2 on the sides 7.1 and 7.2 of the center wall plate 7.
  • the first blade elements 11 end at a peripheral edge of the center web plate 7.
  • a second blade element 13 is arranged on each side 7.1 and 7.2 of the center web plate 7. This extends exclusively over the central web plate 7, but not over the annular gap 9 and is also not connected to the hub part 3.
  • the second blade element 13 is in the form of a circular arc section with the same orientation as the first blade element 11.
  • the radii of curvature of all first and second blade elements 11, 13 are also the same.
  • the blade elements 11, 13 or the fork parts 11.1, 11.2 of the first blade elements 11 are arranged on both sides of the center web plate 7 in a mirror-symmetrical manner.
  • first and / or second blade elements 11, 13 on one side of the center web plate 7 can also be offset in the direction of rotation of the first and / or second blade elements 11, 13 of the center web plate 7. This results in better running smoothness, since this arrangement corresponds to a total of twice the number of blades.
  • the center web plate 7 has a diameter that is larger than the mmaximal radial extent of the first and / or second blade elements 11, 13. This leaves a radial web 15 on the circumference, which separates the tear-off edges of the blade elements 11, 13 on both sides (FIG 3).
  • the blade width of a blade element 11, 13 on the suction side A is greater than that of a blade element 11, 13 on the rear side R.
  • the axial thrust to the suction side can be regulated (FIG. 4).
  • first blade elements 11 can only be arranged on the first side 7.1 of the center web plate 7.
  • the second blade elements 13 can then either be arranged only on the second side 7.2 of the center web plate 7 or on both sides 7.1 and 7.2.

Abstract

L'invention concerne une roue à ailettes ouverte destinée à une pompe centrifuge ou à un appareil analogue, qui comprend une partie moyeu, dans laquelle est formé un alésage de moyeu central, ainsi qu'un premier ensemble d'ailettes qui est relié à la partie moyeu. Cette roue comporte également une plaque centrale de liaison sur les deux côtés de laquelle reposent des premières ailettes.
PCT/DE2000/001264 1999-04-29 2000-04-22 Roue a ailettes ouverte pour pompes centrifuges WO2000066893A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU53887/00A AU5388700A (en) 1999-04-29 2000-04-22 Open impeller for centrifugal pumps
EP00938505A EP1173678A1 (fr) 1999-04-29 2000-04-22 Roue a ailettes ouverte pour pompes centrifuges
DE10081167T DE10081167D2 (de) 1999-04-29 2000-04-22 Offenes Laufrad für Kreiselpumpen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19919192.1 1999-04-29
DE1999119192 DE19919192A1 (de) 1999-04-29 1999-04-29 Offenes Laufrad für Kreiselpumpen o. dgl.

Publications (1)

Publication Number Publication Date
WO2000066893A1 true WO2000066893A1 (fr) 2000-11-09

Family

ID=7906075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2000/001264 WO2000066893A1 (fr) 1999-04-29 2000-04-22 Roue a ailettes ouverte pour pompes centrifuges

Country Status (4)

Country Link
EP (1) EP1173678A1 (fr)
AU (1) AU5388700A (fr)
DE (2) DE19919192A1 (fr)
WO (1) WO2000066893A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110937A1 (fr) * 2009-03-25 2010-09-30 Woodward Governor Company Roue centrifuge à équilibre de force contrôlé

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102042263B (zh) * 2010-12-22 2012-08-29 中国海洋石油总公司 一种用于海底泥浆举升泵的双盘直叶片叶轮
CN102297137B (zh) * 2011-07-26 2015-11-25 中国石油大学(华东) 一种开式不连续叶片泵
CN107795513A (zh) * 2017-12-12 2018-03-13 无锡市盛源汽车配件厂 设置进水栅防护的汽车水泵叶轮

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2111441A (en) * 1935-07-26 1938-03-15 Homer A Thrush Circulator
US3246605A (en) * 1964-03-16 1966-04-19 William L Fisher Rotary pumps
US3816020A (en) * 1972-10-19 1974-06-11 Selgo Pumps Inc Pump
US3975113A (en) * 1974-12-31 1976-08-17 Ogles Ethridge F Centrifugal pump
US4589822A (en) * 1984-07-09 1986-05-20 Mici Limited Partnership Iv Centrifugal blood pump with impeller
US5364233A (en) * 1993-08-30 1994-11-15 Benoit Terry J Irrigation pump apparatus
US5494403A (en) * 1992-04-14 1996-02-27 Ebara Corporation Full-circumferential flow pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345635A1 (de) * 1973-09-10 1975-03-27 Stork Koninklijke Maschf Verfahren zur herstellung eines mit schaufeln versehenen rotors und durch dieses verfahren hergestellter rotor
DE4424996A1 (de) * 1994-07-15 1996-01-18 Oase Pumpen Kreiselpumpe, insbesondere für Springbrunnen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2111441A (en) * 1935-07-26 1938-03-15 Homer A Thrush Circulator
US3246605A (en) * 1964-03-16 1966-04-19 William L Fisher Rotary pumps
US3816020A (en) * 1972-10-19 1974-06-11 Selgo Pumps Inc Pump
US3975113A (en) * 1974-12-31 1976-08-17 Ogles Ethridge F Centrifugal pump
US4589822A (en) * 1984-07-09 1986-05-20 Mici Limited Partnership Iv Centrifugal blood pump with impeller
US5494403A (en) * 1992-04-14 1996-02-27 Ebara Corporation Full-circumferential flow pump
US5364233A (en) * 1993-08-30 1994-11-15 Benoit Terry J Irrigation pump apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010110937A1 (fr) * 2009-03-25 2010-09-30 Woodward Governor Company Roue centrifuge à équilibre de force contrôlé
CN102361698A (zh) * 2009-03-25 2012-02-22 伍德沃德公司 受控的力平衡的离心式叶轮
US8221070B2 (en) 2009-03-25 2012-07-17 Woodward, Inc. Centrifugal impeller with controlled force balance

Also Published As

Publication number Publication date
AU5388700A (en) 2000-11-17
EP1173678A1 (fr) 2002-01-23
DE10081167D2 (de) 2002-05-29
DE19919192A1 (de) 2000-11-09

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