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EP2228541B1 - Roue de rotor pour une pompe centrifuge - Google Patents

Roue de rotor pour une pompe centrifuge Download PDF

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Publication number
EP2228541B1
EP2228541B1 EP09003369A EP09003369A EP2228541B1 EP 2228541 B1 EP2228541 B1 EP 2228541B1 EP 09003369 A EP09003369 A EP 09003369A EP 09003369 A EP09003369 A EP 09003369A EP 2228541 B1 EP2228541 B1 EP 2228541B1
Authority
EP
European Patent Office
Prior art keywords
blades
blade
impeller
impeller according
pair
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.)
Active
Application number
EP09003369A
Other languages
German (de)
English (en)
Other versions
EP2228541A1 (fr
Inventor
Aage Bruhn
Lars ØSTERGAARD
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
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 Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP09003369A priority Critical patent/EP2228541B1/fr
Priority to TW098121123A priority patent/TWI495795B/zh
Priority to US12/714,626 priority patent/US8740569B2/en
Priority to CN201010128895.9A priority patent/CN101832291B/zh
Publication of EP2228541A1 publication Critical patent/EP2228541A1/fr
Application granted granted Critical
Publication of EP2228541B1 publication Critical patent/EP2228541B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape

Definitions

  • the invention relates to an impeller for a centrifugal pump according to the features specified in the preamble of claim 1, from the document DE 41 392 293 is known.
  • Such wheels consist at least of a support body, typically a support plate and arranged thereon blades.
  • the support disk is regularly designed for rotationally fixed arrangement on a shaft.
  • the impeller blades are exposed depending on the design (open impeller) or covered by a cover plate, which is opposite to the support plate and connected to the blades.
  • Such wheels are known in a variety of designs and are used in single or multi-stage centrifugal pumps, they typically have two or more impeller blades, which may be the same or different and / or arranged.
  • centrifugal pumps are available in different sizes.
  • the size variance is varied not only by changing the geometrical dimensions and driving power, but also by variance of the blades. If z.
  • the invention is based on the object, manufacturing technology favorable impeller variance, d. H. To create wheels with different funding characteristics that are possible cost, especially made of sheet metal.
  • the impeller according to the invention for a centrifugal pump has a support disk with blades arranged thereon, in which blades are arranged in pairs next to one another and at least one Shovel pair forming blades have the same shape and size.
  • the basic idea of the present invention is to provide at least one, preferably a plurality of blade pairs on the impeller, which are each arranged next to each other and have the same shape and size.
  • these blades preferably have the same shape and size in the final product.
  • the fundamental idea is to reduce the variance of the blade shape, so that the number of tools for producing the blades can be reduced and, moreover, the feeding of the blades in the production process and their handling is simplified.
  • the shape and size of such pairs of blades are identical, d. H. they have the same dimensions and the same radii of curvature.
  • a pair of blades forms a flow-effective blade. So it can be formed with two blades of the same shape hydraulically different effective blades on the impeller solely by arranging the blades.
  • the shape of the blade of such a blade pair according to the invention is typically designed as used in a normal impeller.
  • the achievable by the paired arrangement of identical wheels according to the invention variance is then used for special purposes.
  • such an elongate blade can be formed by two blades of a pair of blades which are telescoped to each other.
  • Such an extended blade can, for example, for a support disc larger diameter are used when an impeller is to be designed to achieve a higher head.
  • an impeller is to be designed to produce a lower delivery rate.
  • a blade pair consisting of two blades of the same shape and size can be arranged and aligned such that a dead space forms therebetween fluidically, namely if the radially inner end of one blade bears against the other blade and the radially outer ends are spaced apart, It is understood that a required plurality of such impeller pairs can be arranged on a support disk and that the dead space thus formed is particularly effective when the impeller has a covering cover disk.
  • such a dead space can also be formed in another way by a pair of vanes of blades of the same shape and size, for example, when the radially outer ends abut each other and the inner ends are spaced apart, which, however, should generally be less favorable.
  • the present invention can be applied to open or covered wheels, particularly advantageous for wheels having a covering shroud.
  • the blades of a blade pair can be positioned such that a blade of the blade pair protrudes radially beyond the support and / or cover disk. This results hydraulically different effective blades. possibly in a further manufacturing step, the protruding ends can be removed or left so.
  • an impeller blade is advantageously dimensioned so that it has a constant height over its entire length. This is particularly advantageous for the pairwise arrangement, since dead spaces can be created particularly well or longer blades can be formed.
  • the invention is particularly advantageous applicable to wheels that are made of sheet metal, in which so support and / or cover plate and the blades are formed of sheet metal and joined together by welding. Basically, however, the invention is not limited thereto. It is also advantageously applicable to wheels made of other materials, such as plastics or composite materials, in particular when support disk, shroud and blades are made independently and then joined.
  • This in Fig. 1 shown impeller has a circular support plate 1, which has a central recess 2, which is profiled and is provided for non-rotatable connection with a drive shaft, not shown, as counts in centrifugal pumps of the prior art.
  • a plurality of impeller blades 3 is arranged, which extend at a distance from the recess 2 to the outer periphery of the support disk 1.
  • the blades 3 are covered on the opposite side of the support disk 1 by a cover plate 4, which in the embodiment according to Fig. 1 on the inside in an annular portion 5 opens, which forms the inlet of the impeller, as is known per se and therefore will not be described in detail here.
  • FIG Fig. 2 When the cover plate 4 is removed, the shape and arrangement of the blades 3 can be seen, as shown in FIG Fig. 2 is shown by way of example.
  • This impeller according Fig. 2 has a total of six blades 3, which have the same shape and size and are arranged at the same angular distance on the support disk 1.
  • FIGS. 1 and 2 is designed to be designed for lower flow rates are in the impeller according to Fig. 3 in each case two blades 3a and 3b are arranged to form a pair of blades such that a dead space 6 is hydraulically arranged between them forms.
  • the blades 3a and 3b are of the same shape and size, ie they have the same length, the same height and the same radius of curvature for the same material thickness. However, they are arranged differently.
  • the blades 3a are arranged in the same way as those in the impeller according to Fig.
  • blades 3b are arranged such that the radially inner end 7 of a blade 3b abuts the inside of a blade 3a, whereas the radially outer ends 8 of the blades 3a and 3b are spaced apart.
  • Fig. 4 In the execution according to Fig. 4 are on the support plate 1 also six blade pairs, each consisting of the blades 3a and 3b, arranged, but not to form a dead space, but to form longer blades.
  • the blades 3a and 3b are applied to each other in pairs and pulled apart telescopically, so that in comparison to the individual blades 3a and 3b from each pair of blades a single hydraulically effective blade, but longer length results.
  • Fig. 5 are also six pairs of blades each consisting of the blades 3a and 3b arranged on a support disk 1.
  • the vanes 3a are arranged radially further inward so that their radially outer ends terminate with the outer circumference of the support disk 1, whereas the outer ends of the vanes 3b protrude beyond this outer circumference.
  • the blades 3a and 3b are arranged at different angles to each other.
  • the pairs of blades 3a and 3b arranged on the support disk 1 are identical in shape and size, ie they have the same length, the same height and the same radius of curvature. That way you can get wheels different hydraulic properties can be produced using the same shape components, which is advantageous, since one and the same punching tool can be used for the blades 3 and 3a and 3b. It is understood that this is not mandatory. It can also be arranged under pairwise arrangement of the same shape blades 3a and 3b on a wheel different blade pairs or other other blades, if this is advantageous or appropriate.
  • the according to Fig. 5 illustrated and above impeller may optionally be processed in a further processing step, such that the protruding ends of the blades 3b are removed, then the resulting pairs of blades, consisting of the blades 3b 'and 3a, are no longer form-and after this processing step size the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

  1. Roue mobile pour pompe centrifuge comprenant un disque porteur (1) et des aubes (3) disposées sur ce disque, dans laquelle des aubes (3) sont disposées par paires l'une à côté de l'autre, chaque paire d'aubes formant une aube agissant sur l'écoulement (3a, 3b), caractérisée en ce qu'au moins les aubes (3a, 3b) qui forment une paire d'aubes présentent la même forme et la même dimension.
  2. Roue mobile selon la revendication 1, caractérisée en ce que les aubes (3a, 3b) d'une paire d'aubes sont appuyées l'une contre l'autre dans une disposition télescopique.
  3. Roue mobile selon l'une des revendications précédentes, caractérisée en ce que les aubes (3a, 3b) d'une paire d'aubes forment un espace mort (6).
  4. Roue mobile selon l'une des revendications précédentes, caractérisée en ce que les aubes (3a, 3b) d'une paire d'aubes qui forment un espace mort (6) sont espacées à leurs extrémités radialement extérieures (8) et que l'extrémité radialement intérieure (7) d'une aube (3b) est appuyée contre l'autre aube (3a).
  5. Roue mobile selon l'une des revendications précédentes, caractérisée en ce qu'il est prévu un disque de recouvrement (4) qui recouvre la roue mobile.
  6. Roue mobile selon l'une des revendications précédentes, caractérisée en ce que les aubes (3a, 3b) d'une paire d'aubes sont positionnées de telle manière qu'une aube (3b) d'une paire d'aubes déborde radialement au-delà du disque porteur et/ou du disque de recouvrement (1, 4).
  7. Roue mobile selon l'une des revendications précédentes, caractérisée en ce que toutes les aubes (3a, 3b) présentent la même forme et la même dimension.
  8. Roue mobile selon l'une des revendications précédentes, caractérisée en ce qu'une aube (3) présente une hauteur constante sur toute sa longueur radiale.
  9. Roue mobile selon l'une des revendications précédentes, caractérisée en ce que le disque porteur et/ou le disque de recouvrement (1, 4) et les aubes (3) sont faits de métal, de préférence de tôle, et sont assemblés entre eux par soudage.
EP09003369A 2009-03-09 2009-03-09 Roue de rotor pour une pompe centrifuge Active EP2228541B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09003369A EP2228541B1 (fr) 2009-03-09 2009-03-09 Roue de rotor pour une pompe centrifuge
TW098121123A TWI495795B (zh) 2009-03-09 2009-06-24 離心泵用葉輪
US12/714,626 US8740569B2 (en) 2009-03-09 2010-03-01 Impeller for a centrifugal pump
CN201010128895.9A CN101832291B (zh) 2009-03-09 2010-03-04 用于离心泵的叶轮

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09003369A EP2228541B1 (fr) 2009-03-09 2009-03-09 Roue de rotor pour une pompe centrifuge

Publications (2)

Publication Number Publication Date
EP2228541A1 EP2228541A1 (fr) 2010-09-15
EP2228541B1 true EP2228541B1 (fr) 2012-11-14

Family

ID=40933589

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09003369A Active EP2228541B1 (fr) 2009-03-09 2009-03-09 Roue de rotor pour une pompe centrifuge

Country Status (4)

Country Link
US (1) US8740569B2 (fr)
EP (1) EP2228541B1 (fr)
CN (1) CN101832291B (fr)
TW (1) TWI495795B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2703855C (fr) * 2009-07-31 2018-12-11 Rem Enterprises Inc. Pompe a vide d'air perfectionnee pour chargeuse de particules et appareillage de transfert
US9022742B2 (en) * 2012-01-04 2015-05-05 Aerojet Rocketdyne Of De, Inc. Blade shroud for fluid element
KR101914215B1 (ko) * 2012-04-17 2018-11-01 한화에어로스페이스 주식회사 임펠러의 제조방법
US9599120B2 (en) * 2012-08-24 2017-03-21 Asmo Co., Ltd. Impeller for centrifugal pump and centrifugal pump of vehicle washer device
JP6117659B2 (ja) * 2013-09-06 2017-04-19 本田技研工業株式会社 遠心ポンプ
ITUB20150308A1 (it) 2015-05-04 2016-11-04 Ebara Corp Struttura di girante, particolarmente per pompe centrifughe
DE102016225891A1 (de) * 2016-12-21 2018-06-21 KSB SE & Co. KGaA Freistrompumpe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0500000B1 (fr) * 1991-02-12 1996-08-14 Comadur S.A. Elément de commande formant souris

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US436015A (en) * 1890-09-09 Agitator for stuff-chests
US538050A (en) * 1895-04-23 Half to isaac l
US1947658A (en) * 1931-12-17 1934-02-20 Pizzuto Nicolas Impeller and shaft therefor for use in centrifugal and turbine pumps
US3362338A (en) * 1965-01-28 1968-01-09 Armstrong Ltd S A Impellers for centrifugal pumps
GB1510629A (en) * 1974-08-08 1978-05-10 Penny Turbines Ltd N Centrifugal compressor or centripetal turbine
GB2168764B (en) 1984-12-22 1989-06-07 Rolls Royce Plc Centrifugal pump impellers
GB2260788A (en) * 1991-10-05 1993-04-28 Jaguar Cars Pump impeller
DE4139293A1 (de) * 1991-11-29 1993-06-03 Inst Verbundwerkstoffe Gmbh Faserkunststoffverbund-laufrad fuer eine radialstroemungsmaschine
US20030002985A1 (en) * 2001-07-02 2003-01-02 Shu-Chen Tsui Spiral fluted wheel for a pump
SE523740C2 (sv) * 2001-08-27 2004-05-11 Aerodyn Ab Pumpanordning av centrifugaltyp
US7186332B2 (en) * 2004-04-30 2007-03-06 Gl&V Management, Hungary Kft Orbital wastewater treatment system with combined surface aerator and submerged impeller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0500000B1 (fr) * 1991-02-12 1996-08-14 Comadur S.A. Elément de commande formant souris

Also Published As

Publication number Publication date
CN101832291A (zh) 2010-09-15
US8740569B2 (en) 2014-06-03
CN101832291B (zh) 2015-05-13
US20100226773A1 (en) 2010-09-09
TW201033473A (en) 2010-09-16
EP2228541A1 (fr) 2010-09-15
TWI495795B (zh) 2015-08-11

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