EP2674092A1 - Pompe et procédé de fabrication dýune hélice pour une pompe - Google Patents

Pompe et procédé de fabrication dýune hélice pour une pompe Download PDF

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Publication number
EP2674092A1
EP2674092A1 EP13170737.4A EP13170737A EP2674092A1 EP 2674092 A1 EP2674092 A1 EP 2674092A1 EP 13170737 A EP13170737 A EP 13170737A EP 2674092 A1 EP2674092 A1 EP 2674092A1
Authority
EP
European Patent Office
Prior art keywords
impeller
blades
pump
pump according
cover plate
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
Application number
EP13170737.4A
Other languages
German (de)
English (en)
Other versions
EP2674092B1 (fr
Inventor
Tobias Albert
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP2674092A1 publication Critical patent/EP2674092A1/fr
Application granted granted Critical
Publication of EP2674092B1 publication Critical patent/EP2674092B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements
    • D06F39/085—Arrangements or adaptations of 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4214—Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225—Arrangements or adaption of recirculation or discharge pumps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/10—Impellers
    • 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
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/026—Selection of particular materials especially 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for 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
    • 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
    • F04D29/2227—Construction and assembly for special materials
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/20—Manufacture essentially without removing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/50—Building or constructing in particular ways
    • F05D2230/53—Building or constructing in particular ways by integrally manufacturing a component, e.g. by milling from a billet or one piece construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • the invention relates to a pump, in particular for household appliances such as dishwashers or washing machines.
  • the pump is designed as a so-called centrifugal pump.
  • the invention relates to a method for producing an impeller for such a pump.
  • centrifugal pump is out of the EP 2150165 B known.
  • the centrifugal pump described therein has an impeller with an upper cover plate and a lower cover plate, between which there are several blades.
  • the invention has for its object to provide an aforementioned pump and a method for producing an impeller for such a pump with which problems of the prior art can be avoided and in particular an efficient delivery of fluid is possible and advantageously an easy to manufacture, reliably functioning impeller can be provided.
  • a pump in particular for household appliances such as dishwashers or washing machines, that it has an impeller for conveying fluid, wherein the pump with the impeller is designed for a function as a centrifugal pump with central axial suction and radial or tangential outlet of the to be pumped fluids from the impeller.
  • the impeller has an upper cover disk and a lower cover disk, wherein a plurality of blades lie or are arranged between the cover disk.
  • the impeller is thus designed as a so-called closed impeller.
  • the blades extend in the radially inner region substantially upright or more strongly in the axial direction of the pump or the impeller parallel to the axis of rotation of the impeller than in their further course to the outside or towards the radially outer region.
  • the blades are thus less inclined in the radially inner region relative to the longitudinal central axis than in the radially outer region. Particularly advantageous they are approximately upright in the radially inner region.
  • the blades are thus increasingly inclined or inclined or increasingly inclined.
  • its inclination advantageously changes from little or no inclination in the radially inner region to the maximum inclination in the radially outer end region.
  • the inclination of the blades is designed such that the blades are inclined towards the upper cover disk in the direction of rotation of the impeller or are inclined.
  • the change in inclination from monotonous radially inward to radially outward increase. This means that it is at least not falling again.
  • the inclination thus increases continuously. It can grow evenly, but it does not have to. If the inclination increases approximately evenly, on the one hand the shape can be easily produced and on the other hand this in turn improves the flow guidance.
  • a maximum angle of inclination of the blades in the radially outer region may be less than 75 ° to the axis of rotation.
  • it is between 45 ° and 70 °. It may be, for example, at the lower cover plate about 70 ° and at the top about 50 °.
  • the blade can differ in cross section from a straight extension. This means that in their course from the lower cover disc to the upper one Cover disc can be slightly curved, advantageously turn in the direction of rotation.
  • the curvature may be a few percent of the extension length between the lower cover disk and the upper cover disk, for example 1% to 10% or even to 20%. It is preferably about 10%.
  • the blades are curved in its longitudinal course from radially inward to radially outward, particularly advantageous against the direction of rotation curved.
  • a curvature may preferably be uniform. As an approximate measure of the curvature, it may be between 5% and 30% of the extension length between the radially innermost and radially outermost points beyond the bond line between these two points, preferably 15% to 20%.
  • the impeller it is considered preferable if all blades of the impeller are formed identically. Although this not so much for the manufacturing process special advantages, but for the hydraulic properties and the concentricity of the impeller. Particularly advantageously, the impeller also has only said blades.
  • an impeller has three to eight blades. More preferably, there are four to six blades.
  • the blades do not point with their extension direction on the axis of rotation of the impeller, but past it.
  • the vanes also do not occupy the radially innermost region of the impeller or are disposed only outside thereof. For example, the innermost 10% to 40% of the radius may be free of blades.
  • a central protruding projection is arranged on the lower cover plate of the impeller. This projection can project beyond the blades in the direction of the upper cover disk. The blades should be close to the Run ahead, so have at least in the lower cover plate only a small radial distance to him.
  • the lower cover plate and the upper cover plate not only in the radially outer region parallel or at the same distance from each other or from the inside out at least not nearly to each other, but are also particularly advantageous even.
  • the entire lower cover plate is flat to the interior of the impeller. This applies particularly advantageous for the underside of the upper cover plate.
  • said linear slide should be retracted and extended perpendicular to the axis of rotation of the impeller in a direction which passes by the axis of rotation of the impeller, said equidistant spacings of the cover plates are mutually necessary at least at their sides facing each other.
  • one linear slide is used per blade, wherein advantageously a linear slide forms the front of a blade and the back of an adjacent blade, etc., at least partially, preferably at least the outer half of the blade. Its sliding direction can pass through the corresponding blade and preferably at least still hit a part of the next blade following in the direction of rotation.
  • the inclination of the blades in relation to the axis of rotation of the impeller which becomes stronger from radially inward to outward, does not obstruct the use of the linear slide in any way.
  • the linear slide for all blades are retracted and extended from radially outside substantially in the same plane.
  • This plane should be parallel to the lower cover plate, in particular also to the upper cover plate, or rather parallel to the inner sides of the cover plates.
  • a pump 10 which is designed as a radial impeller pump.
  • a pump chamber it has an impeller 11, which sucks in fluid through a central intake and discharges it in the radial direction into the pump chamber. From there, the fluid can emerge after a few revolutions within the pump chamber from an outlet.
  • the impeller 11 is specially designed for this pump, as from the Fig. 1 to 4 becomes clear.
  • the impeller 11 has an upper cover disk 13 and a lower cover disk 20.
  • the upper cover plate 13 has a central suction opening 14.
  • the lower cover plate 20 on an axle 21, with the impeller 11 is attached to an axis of a pump motor.
  • the trained as a rounded survey axle 21 also deflects the sucked fluid radially outward.
  • the top of the upper cover plate 13 is flat except for a slightly thicker edge of the suction port 14, as well as above all Fig. 4 becomes clear. The same applies to the underside of the lower cover plate 20, which in both cases does not have to be this way.
  • a bottom 16 of the upper cover plate 13 is flat or plane, in particular plane-parallel to the top. Except for a central region with the axle receptacle 21, this also applies to an upper side 23 of the lower cover disk 20. In particular, underside 16 and upper side 23 are again plane-parallel to one another except for the region of the axle receptacle 21.
  • the impeller 11 has five blades 27 whose shape or course mainly from the Fig. 2 and 3 can be seen.
  • the blades 27 are each formed or shaped identical.
  • An outer edge 28a of the blades 27 coincides with an outer edge 18 of the upper cover plate 13 and an outer edge 24 of the lower cover plate 20.
  • the outer edge 28a of the blades 27 is highly inclined or inclined, see in particular the Fig. 1 and 4 ,
  • the initial angle to the lower cover plate 20 is about 20 °, in the upper region to the upper cover plate 13, there are more, about 40 °.
  • the inclination decreases more and more, so far, until they extend to an inner edge 28b almost perpendicular to the cover plates 13 and 20 and parallel to the longitudinal center axis of the pump or to the axis of rotation of the impeller 11.
  • the inner edge 28b of the blades 27 is located approximately where the slowly rising axle 21 begins.
  • the blades 27 are arranged at a uniform distance from each other or are evenly distributed. From the side view according to Fig. 4 It can be seen that the slope at the outer edge 28a of the blades 27 always increases, ie strictly monotonous. From the top view Fig. 3 It can be seen that a curvature of the blades 27 also always increases from outside to inside, albeit only slightly.
  • such an impeller 11 could be formed as desired in the production of several parts with such in the longitudinal course in their inclination changing blades, since a production example, in plastic injection molding is very variable.
  • the upper cover plate and the lower cover plate could also be curved, as is known from other impellers in similar pumps, see for example the EP 2150165 B ,
  • a linear slide 30 can be used for the production, as shown in the figures, or five such linear slides are used.
  • the sliding direction S is shown.
  • a form side 31, in the 3 and 4 pointing to the right, is exactly the same as it is in Fig. 3 the side facing toward the lower cover plate 20 and in the direction of rotation of the blades 27 corresponds.
  • a blade area 33 on the forming side 31 corresponds exactly to this side of the blade 27. This is adjoined by an inner area 34 which, as it were, defines the inner edges 28b of the blades 27 toward the axle receptacle 21.
  • the axle 21 itself is produced by a further slide, which in the Fig. 3 retracted into the drawing plane.
  • Another blade area 33 'on the linear slide 30 forms in the circumferentially next blade 27 which counter to the direction of rotation pointing side of the blade 27, which thus points to the previously described blade.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13170737.4A 2012-06-12 2013-06-06 Pompe et procédé de fabrication d'une hélice pour une pompe Active EP2674092B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012209832A DE102012209832B3 (de) 2012-06-12 2012-06-12 Pumpe und Verfahren zum Herstellen eines Impellers für eine Pumpe

Publications (2)

Publication Number Publication Date
EP2674092A1 true EP2674092A1 (fr) 2013-12-18
EP2674092B1 EP2674092B1 (fr) 2016-03-09

Family

ID=48578837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13170737.4A Active EP2674092B1 (fr) 2012-06-12 2013-06-06 Pompe et procédé de fabrication d'une hélice pour une pompe

Country Status (7)

Country Link
US (1) US20130330170A1 (fr)
EP (1) EP2674092B1 (fr)
KR (1) KR102060203B1 (fr)
CN (1) CN103486077B (fr)
DE (1) DE102012209832B3 (fr)
ES (1) ES2566189T3 (fr)
PL (1) PL2674092T3 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170082070A1 (en) * 2012-04-17 2017-03-23 Timothy J. Miller Turbopump with a single piece housing and a smooth enamel glass surface
DE102012216196A1 (de) 2012-09-12 2014-03-13 E.G.O. Elektro-Gerätebau GmbH Pumpe
AP2015008763A0 (en) * 2013-03-28 2015-09-30 Weir Minerals Australia Ltd Slurry pump impeller
CN103644141B (zh) * 2013-12-20 2015-09-30 中国农业大学 一种获取双吸离心泵叶片载荷分布曲线的方法
KR101664906B1 (ko) * 2014-08-11 2016-10-13 한국생산기술연구원 역회전형 펌프 터빈, 이를 포함하는 자가 발전 시스템 및 역회전형 펌프 터빈의 최적화 설계 방법
CN104389813B (zh) * 2014-10-11 2017-11-07 广东威灵电机制造有限公司 叶轮、水泵和具有其的洗碗机
DE102014117841A1 (de) * 2014-12-04 2016-06-09 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung mit einem drehfesten ersten Bauteil und einem zumindest bereichsweise mit dem ersten Bauteil drehbar verbundenen zweiten Bauteil
DE102014117840A1 (de) 2014-12-04 2016-06-09 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung mit einem drehfesten ersten Bauteil und einem zumindest bereichsweise mit dem ersten Bauteil drehbar verbundenen zweiten Bauteil
DE102021205247A1 (de) 2021-05-21 2022-11-24 E.G.O. Elektro-Gerätebau GmbH Pumpe für ein wasserführendes Haushaltsgerät und wasserführendes Haushaltsgerät mit einer solchen Pumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425355A (en) * 1967-07-14 1969-02-04 Gen Motors Corp Dishwasher pump assembly
FR2428753A1 (fr) * 1978-06-14 1980-01-11 Indesit Rotor pour pompe centrifuge de machine a laver la vaisselle
DE29521584U1 (de) * 1994-05-28 1997-10-09 Miele & Cie GmbH & Co, 33332 Gütersloh Pumpe, insbesondere Kreiselpumpe als Umwälzpumpe für wasserführende Haushaltsgeräte, wie Geschirrspülmascchinen und Waschmaschinen
WO2009143569A1 (fr) * 2008-05-27 2009-12-03 Weir Minerals Australia Ltd Turbine de pompe à boue

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US3664760A (en) * 1970-09-02 1972-05-23 Coleco Ind Inc Centrifugal pump
SU1528035A1 (ru) * 1987-02-18 1994-10-30 А.И. Золотарь Центробежный насос
US5980207A (en) * 1997-08-20 1999-11-09 Xerxes Corporation Backward inclined fan impeller
US6755615B2 (en) * 2000-12-04 2004-06-29 Robert Bosch Corporation High efficiency one-piece centrifugal blower
US6848887B2 (en) * 2001-08-23 2005-02-01 Lg Electronics Inc. Turbofan and mold thereof
KR100460587B1 (ko) * 2002-04-19 2004-12-09 삼성전자주식회사 터보팬 및 그 제조용 금형
CN100548533C (zh) * 2005-02-22 2009-10-14 株式会社日立金属精密 压缩机叶轮及其制造方法
TWI300743B (en) * 2006-10-12 2008-09-11 Delta Electronics Components Dongguan Co Ltd Device for extracting a mold core and mold assembly using the device
KR20080045564A (ko) * 2006-11-20 2008-05-23 삼성전자주식회사 터보팬 및 그 제조방법
DE102007017271A1 (de) * 2007-04-12 2008-10-16 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit Heizeinrichtung
JP5495700B2 (ja) * 2009-10-07 2014-05-21 三菱重工業株式会社 遠心圧縮機のインペラ
US9004868B2 (en) * 2010-05-19 2015-04-14 The New York Blower Company Industrial fan impeller having a tapered blade and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425355A (en) * 1967-07-14 1969-02-04 Gen Motors Corp Dishwasher pump assembly
FR2428753A1 (fr) * 1978-06-14 1980-01-11 Indesit Rotor pour pompe centrifuge de machine a laver la vaisselle
DE29521584U1 (de) * 1994-05-28 1997-10-09 Miele & Cie GmbH & Co, 33332 Gütersloh Pumpe, insbesondere Kreiselpumpe als Umwälzpumpe für wasserführende Haushaltsgeräte, wie Geschirrspülmascchinen und Waschmaschinen
WO2009143569A1 (fr) * 2008-05-27 2009-12-03 Weir Minerals Australia Ltd Turbine de pompe à boue

Also Published As

Publication number Publication date
KR20130139186A (ko) 2013-12-20
CN103486077B (zh) 2018-06-08
EP2674092B1 (fr) 2016-03-09
KR102060203B1 (ko) 2019-12-27
ES2566189T3 (es) 2016-04-11
DE102012209832B3 (de) 2013-09-12
US20130330170A1 (en) 2013-12-12
PL2674092T3 (pl) 2016-09-30
CN103486077A (zh) 2014-01-01

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