EP3667092B1 - Ensemble de pompe - Google Patents

Ensemble de pompe Download PDF

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Publication number
EP3667092B1
EP3667092B1 EP18212325.7A EP18212325A EP3667092B1 EP 3667092 B1 EP3667092 B1 EP 3667092B1 EP 18212325 A EP18212325 A EP 18212325A EP 3667092 B1 EP3667092 B1 EP 3667092B1
Authority
EP
European Patent Office
Prior art keywords
rotor
radial
impeller
reference surface
annular
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
EP18212325.7A
Other languages
German (de)
English (en)
Other versions
EP3667092A1 (fr
Inventor
Erik Bundesen Svarre
Jan Plougmann
Therkel Damm
Jan Carøe Aarestrup
Klaus Vestergaard Kragelund
Morten Liengaard Svarre
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 Holdings AS
Original Assignee
Grundfos Holdings 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 Holdings AS filed Critical Grundfos Holdings AS
Priority to EP18212325.7A priority Critical patent/EP3667092B1/fr
Priority to US16/712,054 priority patent/US20200191161A1/en
Priority to CN201911284108.7A priority patent/CN111322248A/zh
Publication of EP3667092A1 publication Critical patent/EP3667092A1/fr
Application granted granted Critical
Publication of EP3667092B1 publication Critical patent/EP3667092B1/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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor 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
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0626—Details of the can
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/0633—Details of the bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/0462—Bearing cartridges
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps

Definitions

  • the rotor can flange may comprise a annular stop surface facing away from the impeller. This stop surface may define an exact positioning of the rotor can in axial direction.
  • the rotor can is axially not limited by the pump housing directly.
  • the rotor can may thus be more resilient to withstand pressure shocks.
  • the annular stop surface may be conical, wherein the radially outward end of the annular stop surface is located further away from the impeller than the radially inward end of the annular stop surface.
  • the rotor can flange may thus deform resiliently for an axial movement to resiliently withstand pressure shocks.
  • the bearing retainer may be placed into the pump housing to rest of the axial stop surface of the pump housing.
  • the rotor can may be pressed downwards with its lower annular contact surface onto the upper annular biasing surface of the bearing retainer to resiliently deform the conical bearing retainer flange section.
  • the locking ring is placed into the groove to secure the rotor can axially while the rotor can is pressed down against the bearing retainer.
  • the bearing retainer is resiliently preloaded to bias the rotor can upward against the locking ring.
  • a neck ring may be fixed to the pump housing, wherein the impeller is located axially between the bearing retainer and the neck ring, wherein the neck ring comprises a cylindrical section at least partially extending into the impeller.
  • the impeller may at least partially extend into the cylindrical section of the neck ring.
  • the cylindrical section may comprise a radial outer or inner gap surface and the impeller may comprise a radial inner or outer gap surface, wherein the radial outer or inner gap surface of the cylindrical section and the radial inner or outer gap surface of the impeller have a radial distance defining a gap.
  • Fig. 19c indicates by dashes in the second material 141 that the second material 141 is not fully homogeneous, but has an inner structure defining a certain spatial orientation of the second material 141.
  • the spatial orientation of the inner structure of the second material 141 basically follows a flow path that the second material 141 took during the overmoulding of the inner side of the cap 21. Therefore, the second material 141 comprises at least one first area 145, where the spatial orientation is predominantly parallel to the rotor axis (R), and at least one second area 147, where the spatial orientation is predominantly perpendicular to the rotor axis (R).
  • the first area(s) 145 mark the area(s) at or around injection point(s) of the second material 141 during overmoulding.
  • the lateral location of the injection point(s) of the second material 141 during overmoulding may thus be wisely chosen to define the first area(s) 145, where the hottest electronic components are located on the PCB 15. This facilitates the heat dissipation from the components on the PCB 15 into the second material 141, which spreads the heat laterally via the second area(s) 147.
  • the first material 139 may act as a heat sink that is cooled by an ambient convection air stream along the front face 19 and/or the radially outer wall 143 of the cap 21.

Landscapes

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

Claims (13)

  1. Ensemble de pompe (1), comprenant
    - un essieu de rotor (45) s'étendant le long d'un axe de rotor (R),
    - une roue (12) fixée à l'essieu de rotor (45),
    - un carter de pompe (11) logeant la roue (12), où le carter de pompe (11) définit une première surface de référence interne radiale (71),
    - un moteur d'entraînement comprenant un stator (17) et un rotor (51), où le rotor (51) est fixé à l'essieu de rotor (45) pour entraîner la roue (12),
    - une boîte de rotor (57) logeant le rotor (51), où la boîte de rotor (57) comprend une bride de boîte de rotor (63),
    - un carter de stator (13) logeant le stator (17),
    - une première bague de roulement radiale (47) étant en contact glissant avec l'essieu de rotor (45), et
    - un dispositif de retenue de roulement (41) entourant la première bague de roulement radiale (47) et centrant la première bague de roulement radiale (47) par rapport à la première surface de référence interne radiale (71) du carter de pompe (11), où la bride de boîte de rotor (63) présente une distance radiale (H) par rapport au carter de pompe (11), et
    où la bride de boîte de rotor (63) comprend une surface de contact annulaire (89) orientée vers la roue (12),
    caractérisé en ce que
    la boîte de rotor (57) comprend une surface de centrage interne radiale (65) centrée en venant radialement en butée contre une surface de centrage externe radiale (67) du dispositif de retenue de roulement (41),
    le dispositif de retenue de roulement (41) comprend une surface de sollicitation annulaire (91) orientée à l'opposé de la roue (12), le dispositif de retenue de roulement (41) étant préchargé élastiquement pour solliciter la surface de sollicitation annulaire (91) du dispositif de retenue de roulement (41) contre la surface de contact annulaire (89) de la bride de boîte de rotor (63), et la surface de contact annulaire (89) de la bride de boîte de rotor (63) et/ou la surface de sollicitation annulaire (91) du dispositif de retenue de roulement (41) présentant au moins trois saillies axiales (94).
  2. Ensemble de pompe (1) selon la revendication 1, dans lequel la surface de centrage intérieure radiale (65) de la boîte de rotor (57) et/ou la surface de centrage extérieure radiale (67) du dispositif de retenue de roulement (41) présentent au moins trois saillies radiales (72).
  3. Ensemble de pompe (1) selon la revendication 1 ou 2, dans lequel le dispositif de retenue de roulement (41) comprend une surface de retenue de roulement externe radiale (69) présentant au moins trois saillies radiales (70) venant radialement en butée contre la première surface de référence interne radiale (71) du carter de pompe (11) et centrant le dispositif de retenue de roulement (41) par rapport à la première surface de référence interne radiale (71) du carter de pompe (11).
  4. Ensemble de pompe (1) selon l'une quelconque des revendications précédentes, dans lequel la bride de boîte de rotor (63) forme une rainure circonférentielle en forme de U (73) avec une section interne radiale (75) et une section externe radiale (77), la section interne radiale (75) formant la surface de centrage interne radiale (65) de la boîte de rotor (57).
  5. Ensemble de pompe (1) selon l'une quelconque des revendications précédentes, dans lequel la bride de boîte de rotor (63) comprend une surface d'arrêt annulaire (79) orientée à l'opposé de la roue (12).
  6. Ensemble de pompe (1) selon la revendication 5, comprenant en outre une bague de verrouillage (85) qui est fixée dans une rainure circonférentielle (87) du carter de pompe (11), où la surface d'arrêt annulaire (79) vient axialement en butée contre la bague de verrouillage (85).
  7. Ensemble de pompe (1) selon l'une quelconque des revendications précédentes, comprenant en outre une bague de col (29) qui est fixée au carter de pompe (11), la roue (12) étant située axialement entre le dispositif de retenue de roulement (41) et la bague de col (29), la bague de col (29) comprenant une section cylindrique (30) s'étendant au moins partiellement jusque dans la roue (12).
  8. Ensemble de pompe (1) selon la revendication 7, dans lequel la section cylindrique (30) comprend une surface d'entrefer externe radiale (105) et la roue (12) comprend une surface d'entrefer interne radiale (107), la surface d'entrefer externe radiale (105) de la section cylindrique (30) et la surface d'entrefer interne radiale (107) de la roue (12) présentant une distance radiale définissant un entrefer (G).
  9. Ensemble de pompe (1) selon l'une quelconque des revendications précédentes, dans lequel le carter de pompe (11) définit une première surface de référence annulaire (109) orientée à l'opposé de la roue (12), et le carter de stator (13) définit une seconde surface de référence annulaire (111) orientée vers la roue (12), la seconde surface de référence annulaire (111) étant sollicitée contre la première surface de référence annulaire (109).
  10. Ensemble de pompe (1) selon la revendication 9, dans lequel le stator (17) définit une seconde surface de référence interne radiale (115) et la boîte de rotor (57) comprend une surface d'alignement externe radiale (117) qui est alignée perpendiculairement à la première surface de référence annulaire (109) du carter de pompe (11) en venant en butée radialement contre la seconde surface de référence interne radiale (115) du stator (17).
  11. Ensemble de pompe (1) selon la revendication 9 ou 10, dans lequel la première surface de référence annulaire (109) est située radialement plus vers l'extérieur que la première surface de référence interne radiale (71) et/ou la première surface de référence annulaire (109) est située axialement plus loin de la roue (12) que la première surface de référence interne radiale (71).
  12. Ensemble de pompe (1) selon la revendication 10 ou 11, dans lequel la seconde surface de référence interne radiale (115) est située radialement plus vers l'intérieur que la seconde surface de référence annulaire (111) et/ou la seconde surface de référence interne radiale (115) est située axialement plus loin de la roue (12) que la seconde surface de référence annulaire (111).
  13. Ensemble de pompe (1) selon l'une quelconque des revendications précédentes, comprenant en outre une bague à baïonnette (113) pour fixer le carter de stator (13) au carter de pompe (11), la bague à baïonnette (113) étant préchargée élastiquement pour solliciter axialement le carter de stator (13) contre le carter de pompe (11) vers la roue (12).
EP18212325.7A 2018-12-13 2018-12-13 Ensemble de pompe Active EP3667092B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP18212325.7A EP3667092B1 (fr) 2018-12-13 2018-12-13 Ensemble de pompe
US16/712,054 US20200191161A1 (en) 2018-12-13 2019-12-12 Pump assembly
CN201911284108.7A CN111322248A (zh) 2018-12-13 2019-12-13 泵机组

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18212325.7A EP3667092B1 (fr) 2018-12-13 2018-12-13 Ensemble de pompe

Publications (2)

Publication Number Publication Date
EP3667092A1 EP3667092A1 (fr) 2020-06-17
EP3667092B1 true EP3667092B1 (fr) 2021-08-18

Family

ID=64665329

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18212325.7A Active EP3667092B1 (fr) 2018-12-13 2018-12-13 Ensemble de pompe

Country Status (3)

Country Link
US (1) US20200191161A1 (fr)
EP (1) EP3667092B1 (fr)
CN (1) CN111322248A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3667089A1 (fr) 2018-12-13 2020-06-17 Grundfos Holding A/S Ensemble de pompe
TWI704291B (zh) * 2019-08-12 2020-09-11 訊凱國際股份有限公司 磁驅泵浦
JP7018081B2 (ja) * 2020-02-13 2022-02-09 シナノケンシ株式会社 電動ポンプ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4304149C1 (de) * 1993-02-12 1994-09-08 Grundfos As Selbstansaugendes Motorpumpenaggregat
DE102004058591A1 (de) * 2004-11-26 2006-06-01 Laing, Oliver Umwälzpumpe und Verfahren zur Herstellung einer Umwälzpumpe
EP2072828B1 (fr) 2007-12-17 2018-03-28 Grundfos Management A/S Pompe avec moteur électrique à rotor noyé
US8083500B1 (en) * 2008-06-11 2011-12-27 AquaMotion, Inc. Motor pump
EP2610497B1 (fr) * 2011-12-27 2016-11-23 Grundfos Holding A/S Groupe motopompe
EP3382206B1 (fr) * 2017-03-31 2020-12-16 Grundfos Holding A/S Ensemble de pompe

Also Published As

Publication number Publication date
US20200191161A1 (en) 2020-06-18
EP3667092A1 (fr) 2020-06-17
CN111322248A (zh) 2020-06-23

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