EP3667092B1 - Pumpenanordnung - Google Patents

Pumpenanordnung 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
English (en)
French (fr)
Other versions
EP3667092A1 (de
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/de
Priority to US16/712,054 priority patent/US20200191161A1/en
Priority to CN201911284108.7A priority patent/CN111322248A/zh
Publication of EP3667092A1 publication Critical patent/EP3667092A1/de
Application granted granted Critical
Publication of EP3667092B1 publication Critical patent/EP3667092B1/de
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. Pumpenanordnung (1), die umfasst
    - einen Rotorschaft (45), der sich entlang einer Rotorachse (R) erstreckt,
    - ein Laufrad (12), das an dem Rotorschaft (45) befestigt ist,
    - ein Pumpengehäuse (11), dass das Laufrad (12) aufnimmt, wobei das Pumpengehäuse (11) eine erste radiale innere Bezugsoberfläche (71) definiert,
    - einen Antriebsmotor, der einen Stator (17) und einen Rotor (51) umfasst, wobei der Rotor (51) an dem Rotorschaft (45) zum Antreiben des Laufrads (12) befestigt ist,
    - ein Rotorspaltrohr (57), das den Rotor (51) aufnimmt, wobei das Rotorspaltrohr (57) einen Rotorspaltrohrflansch (63) umfasst,
    - ein Statorgehäuse (13), das den Stator (17) aufnimmt,
    - einen ersten radialen Lagerring (47), der in Gleitberührung mit dem Rotorschaft (45) ist, und
    - einen Lagerhaltering (41), der den ersten radialen Lagerring (47) umschließt und den ersten radialen Lagerring (47) in Bezug auf die erste radiale innere Bezugsoberfläche (71) des Pumpengehäuses (11) zentriert,
    wobei der Rotorspaltrohrflansch (63) einen radialen Abstand (H) zu dem Pumpengehäuse (11) aufweist, und
    wobei der Rotorspaltrohrflansch (63) eine ringförmige Berührungsoberfläche (89) umfasst, die zu dem Laufrad (12) gewandt ist,
    dadurch gekennzeichnet, dass
    das Rotorspaltrohr (57) eine radiale innere Zentrierungsoberfläche (65) umfasst, die durch radiales Anschlagen gegen eine radiale äußere Zentrierungsoberfläche (67) des Lagerhalterings (41) anschlägt,
    der Lagerhaltering (41) eine ringförmige Vorspannoberfläche (91) umfasst, die von dem Laufrad (12) abgewandt ist, wobei der Lagerhaltering (41) federnd zum Vorspannen der ringförmigen Vorspannoberfläche (91) des Lagerhalterings (41) gegen die ringförmige Berührungsoberfläche (89) des Rotorspaltrohrflanschs (63) vorbelastet ist, und
    wobei die ringförmige Berührungsoberfläche (89) des Rotorspaltrohrflanschs (63) und/oder die ringförmige Vorspannoberfläche (91) des Lagerhalterings (41) mindestens drei axiale Vorsprünge (94) aufweisen.
  2. Pumpenanordnung (1) nach Anspruch 1, wobei die radiale innere Zentrierungsoberfläche (65) des Rotorschafts (57) und/oder die radiale äußere Zentrierungsoberfläche (67) des Lagerhalterings (41) mindestens drei radiale Vorsprünge (72) aufweisen.
  3. Pumpenanordnung (1) nach Anspruch 1 oder 2, wobei der Lagerhaltering (41) eine radiale äußere Lagerhalteringoberfläche (69) umfasst, die mindestens drei radiale Vorsprünge (70) aufweist, die radial gegen die erste radiale innere Bezugsoberfläche (71) des Pumpengehäuses (11) anschlagen und den Lagerhaltering (41) in Bezug auf die erste radiale innere Bezugsoberfläche (71) des Pumpengehäuses (11) zentrieren.
  4. Pumpenanordnung (1) nach einem der vorstehenden Ansprüche, wobei der Rotorspaltrohrflansch (63) eine umfängliche U-förmige Nut (73) mit einem radialen inneren Abschnitt (75) und einem radial äußeren Abschnitt (77) aufweist, wobei der radial innere Abschnitt (75) die radiale innere Zentrierungsoberfläche (65) des Rotorschafts (57) bildet.
  5. Pumpenanordnung (1) nach einem der vorstehenden Ansprüche, wobei der Rotorspaltrohrflansch (63) eine ringförmige Stoppoberfläche (79), die von dem Laufrad (12) abgewandt ist, umfasst.
  6. Pumpenanordnung (1) nach Anspruch 5, die weiter einen Verriegelungsring (85) umfasst, der in einer umfänglichen Nut (87) des Pumpengehäuses (11) gesichert ist, wobei die ringförmige Stoppoberfläche (79) axial gegen den Verriegelungsring (85) anschlägt.
  7. Pumpenanordnung (1) nach einem der vorstehenden Ansprüche, die weiter einen Halsring (29) umfasst, der an dem Pumpengehäuse (11) befestigt ist, wobei das Laufrad (12) axial zwischen dem Lagerhaltering (41) und dem Halsring (29) liegt, wobei der Halsring (29) einen zylindrischen Abschnitt (30) umfasst, der sich mindestens teilweise in das Laufrad (12) erstreckt.
  8. Pumpenanordnung (1) nach Anspruch 7, wobei der zylindrische Abschnitt (30) eine radiale äußere Spaltoberfläche (105) umfasst, und das Laufrad (12) eine radiale innere Spaltoberfläche (107) umfasst, wobei die radiale äußere Spaltoberfläche (105) des zylindrischen Abschnitts (30) und die radiale innere Spaltoberfläche (107) des Laufrads (12) einen radialen Abstand, der einen Spalt (G) definiert, aufweisen.
  9. Pumpenanordnung (1) nach einem der vorstehenden Ansprüche, wobei das Pumpengehäuse (11) eine erste ringförmige Bezugsoberfläche (109) definiert, die von dem Laufrad (12) abgewandt ist, und das Statorgehäuse (13) eine zweite ringförmige Bezugsoberfläche (111) definiert, die zu dem Laufrad (12) gewandt ist, wobei die zweite ringförmige Bezugsoberfläche (111) gegen die erste ringförmige Bezugsoberfläche (109) vorgespannt ist.
  10. Pumpenanordnung (1) nach Anspruch 9, wobei der Stator (17) eine zweite radiale innere Bezugsoberfläche (115) definiert, und der Rotorschaft (57) eine radiale äußere Ausrichtungsoberfläche (117) umfasst, die senkrecht zu der ersten ringförmigen Bezugsoberfläche (109) des Pumpengehäuses (11) durch radiales Anschlagen gegen die zweite radiale innere Bezugsoberfläche (115) des Stators (17) ausgerichtet ist.
  11. Pumpenanordnung (1) nach Anspruch 9 oder 10, wobei die erste ringförmige Bezugsoberfläche (109) radial weiter außen liegt als die erste radiale innere Bezugsoberfläche (71) und/oder die erste ringförmige Bezugsoberfläche (109) axial weiter von dem Laufrad (12) weg liegt als die erste radiale innere Bezugsoberfläche (71).
  12. Pumpenanordnung (1) nach Anspruch 10 oder 11, wobei die zweite radiale innere Bezugsoberfläche (115) radial weiter innen liegt als die zweite ringförmige Bezugsoberfläche (111) und/oder die zweite radiale innere Bezugsoberfläche (115) axial weiter von dem Laufrad (12) weg liegt als die zweite ringförmige Bezugsoberfläche (111).
  13. Pumpenanordnung (1) nach einem der vorstehenden Ansprüche, die weiter einen Bajonettring (113) zum Sichern des Statorgehäuses (13) an dem Pumpengehäuse (11) umfasst, wobei der Bajonettring (113) federnd zum axialen Vorspannen des Statorgehäuses (13) gegen das Pumpengehäuse (11) zu dem Laufrad (12) vorgeladen ist.
EP18212325.7A 2018-12-13 2018-12-13 Pumpenanordnung Active EP3667092B1 (de)

Priority Applications (3)

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

Publications (2)

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

Family

ID=64665329

Family Applications (1)

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

Country Status (3)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3667089A1 (de) * 2018-12-13 2020-06-17 Grundfos Holding A/S Pumpenanordnung
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
TWM638533U (zh) * 2022-09-28 2023-03-11 訊凱國際股份有限公司 比例閥
CN116505697A (zh) * 2023-05-24 2023-07-28 上海鸣志电器股份有限公司 一种泵用屏蔽罐及其制造方法
CN116792411A (zh) * 2023-05-26 2023-09-22 鸣志电器(太仓)有限公司 一种泵用轴承保持器及具有该轴承保持器的离心泵机组
WO2025059921A1 (zh) * 2023-09-20 2025-03-27 德昌电机(江门)有限公司 流体泵
CN121296474A (zh) * 2024-07-09 2026-01-09 广东德昌电机有限公司 流体泵

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 (de) 2007-12-17 2018-03-28 Grundfos Management A/S Nasslaufkreiselpumpe
US8083500B1 (en) * 2008-06-11 2011-12-27 AquaMotion, Inc. Motor pump
PL2610497T3 (pl) * 2011-12-27 2017-06-30 Grundfos Holding A/S Agregat pompowy
EP3382206B1 (de) * 2017-03-31 2020-12-16 Grundfos Holding A/S Pumpenanordnung

Also Published As

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

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