EP1260714A1 - Moteur d'entraínement d'une pompe immersible - Google Patents

Moteur d'entraínement d'une pompe immersible Download PDF

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Publication number
EP1260714A1
EP1260714A1 EP01112676A EP01112676A EP1260714A1 EP 1260714 A1 EP1260714 A1 EP 1260714A1 EP 01112676 A EP01112676 A EP 01112676A EP 01112676 A EP01112676 A EP 01112676A EP 1260714 A1 EP1260714 A1 EP 1260714A1
Authority
EP
European Patent Office
Prior art keywords
drive motor
inner housing
motor according
jacket
housing
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
EP01112676A
Other languages
German (de)
English (en)
Other versions
EP1260714B1 (fr
Inventor
Lars Vestergaard Nielsen
Tom Jaeger
John Olsen
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 AS
Original Assignee
Grundfos 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 AS filed Critical Grundfos AS
Priority to EP01112676A priority Critical patent/EP1260714B1/fr
Priority to DE50111547T priority patent/DE50111547D1/de
Publication of EP1260714A1 publication Critical patent/EP1260714A1/fr
Application granted granted Critical
Publication of EP1260714B1 publication Critical patent/EP1260714B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04D13/0686—Mechanical details of the pump control unit
    • 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
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5813—Cooling the control unit

Definitions

  • the invention relates to an electric drive motor for a submersible centrifugal pump, according to the preamble of claim 1.
  • centrifugal pumps it is known in practice to use centrifugal pumps to pump waste water to install in a well or basin that the centrifugal pump is at least partially immersed in the waste water, in which case the waste water has reached its lowest level in the well. If the aggregate is the wastewater level usually completely immersed in the wastewater. If the electrical Drive motor of such pumps with a terminal box, which in known the electrical control parts for automatic Einund Switch off and contains for speed control of the drive motor, it must be ensured that the terminal box is waterproof so as not to damage the electrical control parts and to put out of function.
  • the sealing material which between the Inserted the lid and the rest of the body of the terminal box is, however, has a limited lifespan, so the tightness the terminal box is limited accordingly, which is why the aggressiveness of the wastewater to be pumped makes a decisive contribution.
  • the terminal box of such drive motors must therefore be relatively short time intervals for tightness are checked, the sealing material replace if necessary.
  • the maintenance cost for one Corresponding centrifugal pump unit are therefore relatively high.
  • the terminal box has been proposed trained as a separate unit by the centrifugal pump and to place this unit in one place in the well or basin, from the rising water level in the well or Pelvis is not reached.
  • the unit is then electrical Cable connected to the functionally installed centrifugal pump.
  • the Manufacturing such a separate unit is relatively expensive and it is not always a suitable place in the well for mounting the unit available.
  • the insulating material of the electrical, from the unit to the centrifugal pump connecting cable from be of special quality to withstand the aggressiveness of the waste water to be able to.
  • the object of the invention is to improve one for one a pumpable immersible centrifugal pump certain electrical Drive motor of the aforementioned type in that the electrical control means for operating the drive motor, in particular for its automatic switching on and off and if necessary for its speed control, are required, integrated in the engine and thus against harmful effects of the medium Centrifugal pump are permanently protected and that the drive motor is safely cooled even when the unit is installed dry.
  • the solution according to the invention eliminates the outside of the motor housing usually attached terminal box with the inside known control means contained or a separate unit with the control means in question, including a connecting cable, which is the separate unit with the electric drive motor combines. All control means are now - from the assembly room of the mains connection separately - in the annular space of the drive motor included, which is sealed against the external engine environment is that a harmful influence of the medium in which the Engine is optionally immersed on the sealing material of the Motors is not given.
  • the electrical control parts can be the most advantageous Places are arranged within the annulus, namely in addition to the possibility that a large number of control parts in the annular space can be accommodated, the control parts themselves not being necessary must have a miniature design. It also ensures that the heat loss from the motor is safely transferred to the pump flowing medium is derived. The heat loss is from the inner casing of the drive motor to the front end wall of the Drive motor directed, which in turn from the pumped medium is applied. At the same time, the inner housing also serves as a heat sink for the heat loss from the electrical control parts in the annulus mentioned, for example from the Power section of a frequency converter. The smooth surface of the unit reduces the risk of dirt accumulation.
  • Fig. 1 is a generally designated 1 motor pump unit shown, which consists of an electric drive motor 2 and a submersible Centrifugal pump 3 exists.
  • the drive motor and the centrifugal pump are together, for example, by a conventional clamping ring 4 firmly connected.
  • the drive motor has one in its end areas rotatably mounted drive shaft 5, a rotatably arranged thereon Rotor 6 and one radially opposite the rotor electric stator 7.
  • the stator 7 is in a housing of the Drive motor rotatably mounted, this housing a front End wall 8 includes with which the centrifugal pump 3 by means of Fastening ring 4 is connected.
  • the front end wall 8 consists of thermally conductive material and is facing the pump 3 Surface 8a is acted upon by a proportion of the delivery flow of the centrifugal pump.
  • the housing of the electric drive motor 2 includes in addition to the front end wall 8 a cylindrical inner housing 9 made of heat-conducting Material, for example aluminum or an aluminum alloy, a rear end wall 10 which is integrally formed with the inner housing or can be a related special part, and one Jacket 11.
  • This jacket surrounds the inner housing 9 with a radial Distance, so that an annular space 12 is formed between these two parts is arranged in the electrical means for operating the drive motor are, as will become clear.
  • the jacket 11 is preferably made of stainless material and preferably made of stainless steel with a wall thickness of 1 to 4 mm.
  • the jacket 11 also in the form of a bell or the like can be carried out, it is in the form shown in Fig. 1 as a paraboloid educated. Alternatively, it can also have the shape of a truncated cone or be tubular.
  • the coat is on its outer surface 11 generally free of cooling fins. If desired, however, he can be provided on the outside with cooling fins (not shown).
  • the motor housing of the electric drive motor 2 also contains one End cover 13, which is attached to the rear end of the inner housing 9 is. This attachment can be done with a central attachment screw 14 take place, which is screwed to the inner housing.
  • the rear end of the inner housing has a bearing support part 15 on which on the one hand a bearing 16 for the rear rotatable Bearing of the drive shaft 5 and on the other hand with a central threaded hole 17 for receiving the central Fastening screw 14 is provided.
  • the end cover 13 has an introductory training 18 for the Introduction of a power supply cable (not shown) for the electrical Power supply to the electrical, provided in the annulus 12 Means for operating and controlling the drive motor.
  • a power supply cable (not shown) for the electrical Power supply to the electrical, provided in the annulus 12 Means for operating and controlling the drive motor.
  • Continuous introductory training 18 can be an introducer sheath 19 can be provided, with the help of the power supply cable is sealed from the environment.
  • the front end wall 8 has a peripheral flange 8b, on the Outer surface of one end of the centrifugal pump 3 Sheath 11 is sealed against the environment.
  • the seal can be done for example by elastic O-rings 20, which in corresponding grooves of the peripheral flange 8b are arranged.
  • the other end of the jacket 11, which the end cover 13th is facing, has a recess formation 21, which on the rear End part 10 is applied. Furthermore, the rear end cover engages the recess 21 by means of the fastening force of the central one Screw 14 with the result that the jacket 11 with its related End is pressed against the rear end wall 10. This is the jacket 11 between the end cover 13 and the front End wall 8 clamped.
  • the secure radial fastening of the jacket 11 is essentially achieved by the rear end of the jacket is form-fitting, for example by the recess 21, wherein the jacket 11 further in its rear area between the End cover 13 and the rear end wall 10 are clamped becomes. It is therefore sufficient that the front end of the jacket 11 loose without further definition, but sealed by means of the O-rings 20 outside of the peripheral flange 8b of the front end wall 8 is applied.
  • the essentially cylindrical inner housing 9 has a heat-conducting one Cross section on which is preferably to the pump side of the electric drive motor 2 enlarged.
  • a heat-conducting one Cross section on which is preferably to the pump side of the electric drive motor 2 enlarged.
  • the inner housing with itself radially outward extending cooling fins 22 is provided as best as possible Fig. 2 can be seen.
  • the cylindrical body of the inner case from which the electric stator 7 is held, provided with a cross section is, which increases steadily towards the centrifugal pump 3.
  • the annular space has 12 between the inner housing 9 and the jacket 11 a considerable size, both in radial and in axial Direction.
  • This annulus is therefore ideally suited to the funds for electrical operation of the drive motor 2.
  • Such Means are summarized with reference numeral 23 in FIGS. 1 and 2 specified.
  • Such resources are generally known and include for example all terminals to the electrical stator 7 in the necessary way to supply electrical energy.
  • the means 23 also comprise means for automatic switching on and off of the drive motor and means for its speed control, the include a frequency converter, for example. This enumeration is not fully, so all funds are eligible for operation of the drive motor are important.
  • the operation of the motor pump unit 1 described arises Heat loss both in the electrical stator 7 and at some of the electrical equipment 23 in the annular space 12.
  • This heat loss is essentially dissipated via the material of the inner housing 9, namely to the centrifugal pump 3.
  • the heat loss reaches first to the front end wall 8 of the motor housing and then from a proportion of the flow of the centrifugal pump, which at the Surface 8a flows along the end wall 8, discharged. This is one effective cooling of the electric drive motor 2 given.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP01112676A 2001-05-25 2001-05-25 Unité moteur/pompe avec moteur d'entraînement et pompe immersible Expired - Lifetime EP1260714B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP01112676A EP1260714B1 (fr) 2001-05-25 2001-05-25 Unité moteur/pompe avec moteur d'entraînement et pompe immersible
DE50111547T DE50111547D1 (de) 2001-05-25 2001-05-25 Motorpumpemaggregat mit elektrischem Antriebsmotor und einntauchbaren Kreiselpumpe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01112676A EP1260714B1 (fr) 2001-05-25 2001-05-25 Unité moteur/pompe avec moteur d'entraînement et pompe immersible

Publications (2)

Publication Number Publication Date
EP1260714A1 true EP1260714A1 (fr) 2002-11-27
EP1260714B1 EP1260714B1 (fr) 2006-11-29

Family

ID=8177539

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01112676A Expired - Lifetime EP1260714B1 (fr) 2001-05-25 2001-05-25 Unité moteur/pompe avec moteur d'entraînement et pompe immersible

Country Status (2)

Country Link
EP (1) EP1260714B1 (fr)
DE (1) DE50111547D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115627A1 (fr) * 2006-04-06 2007-10-18 Alfred Kärcher Gmbh & Co. Kg Pompe a immersion
EP1959144A3 (fr) * 2007-02-17 2009-10-21 DLP Limited Pompe électrique pour douche et unité de commande
WO2021165631A1 (fr) * 2020-02-18 2021-08-26 Bowman Power Group Limited Turbomachine électrique
EP4105488A1 (fr) * 2021-06-28 2022-12-21 Dab Pumps S.p.A. Pompe d'immersion à maintenance améliorée
US20220412374A1 (en) * 2021-06-28 2022-12-29 Garrett Transportation I Inc. Integrated e-machine controller for turbomachine having fastener arrangement for electronics components
EP4112902A1 (fr) * 2021-06-28 2023-01-04 Garrett Transportation I Inc. Système de refroidissement de contrôleur intégré pour turbomachine électrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4229301A4 (fr) 2020-10-19 2025-02-19 Milwaukee Electric Tool Corporation Ensemble pompe bâton

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743112A1 (de) * 1977-09-24 1979-04-05 Albert Blum Elektrisch angetriebene pumpe
DE4222394C1 (de) * 1992-07-08 1993-12-09 Grundfos A S Bjerringbro Motorpumpe
EP0599204A1 (fr) 1992-11-20 1994-06-01 Grundfos A/S Unité de pompe submersible
US5332369A (en) * 1991-06-28 1994-07-26 Grundfos A/S Pump unit with cooling jacket for electric motor
DE19703655A1 (de) * 1997-01-31 1998-08-06 Spn Schwaben Praezision Fritz Elektrische Antriebseinrichtung
FR2772207A1 (fr) * 1997-12-04 1999-06-11 France Etat Moteur electrique autosynchrone alternatif
EP1026404A1 (fr) * 1999-02-03 2000-08-09 Pierburg Aktiengesellschaft Pompe centrifuge à moteur électrique

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743112A1 (de) * 1977-09-24 1979-04-05 Albert Blum Elektrisch angetriebene pumpe
US5332369A (en) * 1991-06-28 1994-07-26 Grundfos A/S Pump unit with cooling jacket for electric motor
DE4222394C1 (de) * 1992-07-08 1993-12-09 Grundfos A S Bjerringbro Motorpumpe
EP0599204A1 (fr) 1992-11-20 1994-06-01 Grundfos A/S Unité de pompe submersible
DE19703655A1 (de) * 1997-01-31 1998-08-06 Spn Schwaben Praezision Fritz Elektrische Antriebseinrichtung
FR2772207A1 (fr) * 1997-12-04 1999-06-11 France Etat Moteur electrique autosynchrone alternatif
EP1026404A1 (fr) * 1999-02-03 2000-08-09 Pierburg Aktiengesellschaft Pompe centrifuge à moteur électrique

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007115627A1 (fr) * 2006-04-06 2007-10-18 Alfred Kärcher Gmbh & Co. Kg Pompe a immersion
EP1959144A3 (fr) * 2007-02-17 2009-10-21 DLP Limited Pompe électrique pour douche et unité de commande
EP4107380A1 (fr) * 2020-02-18 2022-12-28 Bowman Power Group Limited Turbomachine électrique
WO2021165631A1 (fr) * 2020-02-18 2021-08-26 Bowman Power Group Limited Turbomachine électrique
US12006861B2 (en) 2020-02-18 2024-06-11 Bowman Power Group Limited Electric turbomachine having compressor and power electronics and control assemblies
US20220412374A1 (en) * 2021-06-28 2022-12-29 Garrett Transportation I Inc. Integrated e-machine controller for turbomachine having fastener arrangement for electronics components
IT202100016853A1 (it) * 2021-06-28 2022-12-28 Dab Pumps Spa Pompa a immersione a manutenzione migliorata
EP4112902A1 (fr) * 2021-06-28 2023-01-04 Garrett Transportation I Inc. Système de refroidissement de contrôleur intégré pour turbomachine électrique
CN115596712A (zh) * 2021-06-28 2023-01-13 盖瑞特动力科技(上海)有限公司（Cn） 用于涡轮机器的集成电机控制器的冷却剂系统
US11668323B2 (en) 2021-06-28 2023-06-06 Garrett Transportation I Inc. Coolant system for integrated e-machine controller for turbomachine
US11781565B2 (en) * 2021-06-28 2023-10-10 Garrett Transportation I Inc. Integrated e-machine controller for turbomachine having fastener arrangement for electronics components
CN115596712B (zh) * 2021-06-28 2024-03-19 盖瑞特动力科技(上海)有限公司 流体压缩机装置、涡轮增压器以及制造流体压缩机装置的方法
EP4105488A1 (fr) * 2021-06-28 2022-12-21 Dab Pumps S.p.A. Pompe d'immersion à maintenance améliorée

Also Published As

Publication number Publication date
DE50111547D1 (de) 2007-01-11
EP1260714B1 (fr) 2006-11-29

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