EP1158175A2 - Moteur à manchon d'entrefer en feuille - Google Patents

Moteur à manchon d'entrefer en feuille Download PDF

Info

Publication number
EP1158175A2
EP1158175A2 EP01111736A EP01111736A EP1158175A2 EP 1158175 A2 EP1158175 A2 EP 1158175A2 EP 01111736 A EP01111736 A EP 01111736A EP 01111736 A EP01111736 A EP 01111736A EP 1158175 A2 EP1158175 A2 EP 1158175A2
Authority
EP
European Patent Office
Prior art keywords
film
stator
motor according
canned
canned motor
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
EP01111736A
Other languages
German (de)
English (en)
Other versions
EP1158175B1 (fr
EP1158175A3 (fr
Inventor
Waldemar Stephan
Günter Strelow
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.)
Wilo SE
Original Assignee
Wilo AG
Wilo 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 Wilo AG, Wilo GmbH filed Critical Wilo AG
Publication of EP1158175A2 publication Critical patent/EP1158175A2/fr
Publication of EP1158175A3 publication Critical patent/EP1158175A3/fr
Application granted granted Critical
Publication of EP1158175B1 publication Critical patent/EP1158175B1/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
    • F04D13/0606—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
    • 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

Definitions

  • the invention relates to a canned motor for a centrifugal pump, with a Canned tube, which is designed as a wet rotor and with the motor shaft rotatably connected rotor from the rotatably connected to the motor housing connected stator.
  • Such canned motors are generally known and for example in the German patent application DE 44 38 132 described.
  • the can or the containment shell surrounds the one circulating in the liquid being pumped Rotor and seals it against the dry stator space.
  • the canned pipe is made of metal or made of plastic.
  • a can made of plastic as it is for example is known from the US Pat. No. 4,836,147 a wall thickness of at least for manufacturing reasons 0.8 to 1 millimeter.
  • Such a containment can must be used for the required Dimensional stability also have sufficient inherent stiffness, what also caused correspondingly large wall thicknesses.
  • the Containment can or the can in the gap area mostly conical, in order to be easily demolded from the casting tool.
  • the object of the invention is therefore a canned motor of the beginning to create the type mentioned, with simple construction, small size and inexpensive to manufacture a small gap between Stator and rotor enables and thus high performance or high Efficiency of the machine guaranteed.
  • the main advantage is the very small thickness of the film, whereby the formation of a very small gap between the stator and Rotor is enabled. In this way, not only smaller sizes, but also without other types of performance-enhancing and cost-intensive Changes high efficiency and great performance of the machine can be achieved.
  • the film can be made of non-metallic Material be made so that the induction of power-reducing eddy currents is prevented.
  • the film can also be cylindrical in shape be so that the in the case of conically designed containment pots both on the inside to the cylindrical rotor and on the outside for hollow cylindrical stator and its thickness in the axial direction increasing gap can be avoided.
  • the construction is simple, so that the canned motor according to the invention is inexpensive can be produced.
  • the film is tubular, so that seams are not required.
  • the support elements have at least two Include clamping elements between which the film is stretched.
  • the film can be kept in the desired shape in a particularly simple manner.
  • the support elements comprise at least one packing, which is arranged on or next to the stator and on which the film rests.
  • the filler (s) form for the film a mechanically supporting surface, so that the film is a receives particularly high mechanical strength.
  • each of which is an annular Has recess for a clamping ring, the clamping ring the film spanned over the inner circumference of the stator. This prevents the foil comes into contact with the rotor.
  • the film can also be at the exit of the motor shaft from the motor housing facing side between the front wall of the motor housing or a bearing plate on the one hand and the stator and / or a packing on the other hand, be clamped.
  • Foil in the same way between the bottom of the engine case or one the cover that closes the motor housing on the one hand and the stator and / or a packing on the other hand. It is cheap also if a sealing ring (O-ring) is provided, which the film clamped and at the same time between the film on the one hand and the motor housing final transverse wall (exit side of the motor shaft or Bottom of the motor housing) and / or a coaxial provided thereon on the other hand seals to the motor shaft inward projection.
  • O-ring sealing ring
  • the support elements or the filler with potting compound in particular areas filled with synthetic resin.
  • the stator can preferably be completely potted and thus a particularly large one Form a mechanically load-bearing surface for the overlying film.
  • the film is integral with the stator and / or on the support elements or on the packing or on the Potting compound attached, in particular glued or welded. This provides a particularly high level of security against touching the film reached with the rotor.
  • the support elements can have a plurality of clamping elements comprise that stretch the film radially outwards.
  • the clamping elements can in particular as rods axially between the individual stator windings be arranged of the stator. They can also be in a ring Provide circumferential direction and stretch the film.
  • the film is a composite film of several Single slides is. In this way, the advantages of different film materials can be combined with each other. It is particularly cheap if the film or a single film is made of plastic and / or is elastic.
  • the film has a thickness between 0.1 and 1 Millimeters, preferably between 0.3 and 0.5 millimeters.
  • the film is at the end facing away from the outlet side of the motor shaft via an Bottom area closed and thus forms a can.
  • the one before described advantageous embodiments of a film formed can can in the same way also in one by Foil can can be used.
  • the film on the pump chamber opposite side with its bottom area radially and / or axially between a bearing of the motor shaft on the one hand and the bearing radially and / or axially receiving bracket is clamped on the other hand.
  • the bottom area of the containment can be particularly easily in the desired Be held in position.
  • the can made of foil can be particularly easily thereby on the floor area or on an area adjacent to the floor area Pot area clamped to the required diameter be when axially between the rotor and the bottom of the Foil arranged bearing a clamping element rotatably with the motor housing it is provided that the film spans outwards.
  • the clamping element attached to the bearing receiving the shaft end his.
  • the rotor turns radially inside the stator, with the foil over the inner circumference of the stator is open.
  • the rotor can also be radial circulate outside the stator, the film over the outer circumference of the Stator is excited.
  • the stator is in the shape of a hollow cylinder trained rotor arranged, the film here as a separation the wet running area from the dry area of the engine as a canned pipe is arranged between the stator and the rotor.
  • the canned motor 1 shown in Figure 1 has a motor housing 2 in which the motor shaft 4 carrying the pump impeller 3 in two bearings 5 and 6 is stored.
  • the bearing 5 adjacent to the pump impeller 3 is shown in FIG a central opening of the end wall 7 of the motor housing 2 attached. Radially outside the opening for the bearing 5, the end wall 7 has several Openings 8 through which the interior of the motor housing 2 with the Pump chamber is connected. That facing away from the pump impeller 3 Bearing 6 is fixed in a central recess of a cover 9, which Motor housing 2 on the end facing away from the pump chamber completes.
  • the rotor 10 is rotatably on the motor shaft 4 attached, the wet runner from the through the openings 8 from the Pump housing in the interior of the motor housing 2 flowing fluid is surrounded.
  • the stator 11 is radially outside the rotor 10 rotatably received in the motor housing 2.
  • the individual windings 12 are placed around the winding supports 13 of the stator 11.
  • the two fillers 14 are here by a Casting compound formed, the inner peripheral surfaces as support elements 15 are formed for a film 16 serving as a can.
  • the Foil 16 is tubular and separates that from the funded Liquid surrounding rotor 10 from the dry stator 11. Here takes over the plastic film 16 with a thickness of 0.4mm the function of a particularly thin canned motor of the canned motor 1.
  • the tubular film 16 lies with its outside on the Support elements 15 and the inner wall of the stator 11.
  • the Edge areas of the film 16 are here of the two packing elements 14 as Support element 15 worn and glued to it.
  • the two fillers 14 face the inside of the end wall 7 or The end faces facing the lid 9 each have an annular recess 17, in each of which an O-ring lies. If the film 16 in axial direction is long enough, the two Edge areas of the film 16 also each by an O-ring Clamping element 18 are clamped so that the film 16 in the axial Direction and over the inner circumference of the stator 11 and the two Packing body 14 is clamped.
  • the two O-rings 18 also seal each against a coaxially protruding into the interior of the motor housing 2 Projection of the end wall 7 or the lid 9, so that the through the openings 8 into the interior of the motor housing 2 Delivery liquid only in the rotor 10 and the motor shaft 4 and Camp 5, 6 surrounding area can reach.
  • the motor housing 2 on the side opposite the pump chamber by a one-piece with the motor housing 2 formed end wall 19, whereas the end of the motor housing 2 facing the pump chamber is completed by an inserted end shield 20.
  • the film 16 is in this case directly between the support elements 15 and the end wall 19 or the bearing plate 20 clamped and thus over the inner circumference of the Stator 11 spanned.
  • the bearing plate 20 and the end wall 19 point one protruding centrally into the interior of the motor housing 2 Projection 21, on the outside of each with a support member 15 abuts its inner circumference and clamps the film 16 in between.
  • the two edge regions 22 of the film 16 are in one plane perpendicular to the motor shaft 4 between an outward plane directed collar of the support elements 15 and the inside of the end wall 19 or an inner region of the bearing plate 20 is clamped. To this In this way, the film 16 is particularly secure for its function Canned tube required shape kept.
  • the film 16 is on the the end facing the end wall 19 via a base region 23 closed.
  • the film 16 takes on the function of a known canister.
  • the bottom region 23 of the film 16 is here both in the circumferential direction and in a direction perpendicular to the motor shaft 4 level between the bearing 6 and the bearing 6 receiving regions of the end wall 19 or the projection 21 clamped.
  • a disc 24 Between the central center of the bottom area 23 of the film 16 and the end face of the bearing 6 facing the end wall 19 is present.
  • a second disc 25 as a clamping element in a rotationally fixed connected to the bearing 6 and the protrusion 21 of the motor housing 2, which spans the film 16 radially outward over its outer circumference.
  • the outer diameter of the disk 25 corresponds to the inner diameter of the stator 11.
  • the structure of the can motor 26 corresponds essentially the structure of the canned motor 1 from FIG. 2.
  • FIG. 4 shows an embodiment of a canned motor according to the invention 1, in which the rotor 10 radially outside the stator 11 circulates.
  • the film 16 via two support elements 15 over the outer circumference of the stator 11 tensioned, so that it can be used here as a can of the pumped liquid surrounding wet rotor area of the rotor 10 from separates the inner dry area of the stator 11.
  • All embodiments of the canned motor 1 according to FIGS. 1, 2 or 4 or the can motor 26 according to FIG. 3 is the advantage of a very small thickness of the film 16 of 0.4 mm in common, which the Formation of a very small gap between stator 11 and rotor 10 is made possible, so that particularly high efficiencies and large The performance of motors 1, 26 can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Frames (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP01111736A 2000-05-20 2001-05-15 Moteur à manchon d'entrefer en feuille Expired - Lifetime EP1158175B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10025190 2000-05-20
DE2000125190 DE10025190A1 (de) 2000-05-20 2000-05-20 Spaltrohrmotor mit Folienspaltrohr

Publications (3)

Publication Number Publication Date
EP1158175A2 true EP1158175A2 (fr) 2001-11-28
EP1158175A3 EP1158175A3 (fr) 2005-04-27
EP1158175B1 EP1158175B1 (fr) 2008-02-13

Family

ID=7643053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01111736A Expired - Lifetime EP1158175B1 (fr) 2000-05-20 2001-05-15 Moteur à manchon d'entrefer en feuille

Country Status (2)

Country Link
EP (1) EP1158175B1 (fr)
DE (2) DE10025190A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1383227A2 (fr) * 2002-07-17 2004-01-21 Liebherr-Aerospace Lindenberg GmbH Moteur à rotor immergé et son procédé de fabrication
WO2011131251A1 (fr) * 2010-04-19 2011-10-27 Pierburg Pump Technology Gmbh Pompe électrique pour réfrigérant de véhicule automobile
US8110958B2 (en) 2005-08-23 2012-02-07 Bsh Bosch Und Siemens Hausgeraete Gmbh Rotor cover with rotor fins extending between stator slots
WO2015086099A1 (fr) * 2013-12-10 2015-06-18 Wilo Se Pompe à moteur à rotor humide
DE102015225189A1 (de) * 2015-12-15 2017-06-22 Robert Bosch Gmbh Elektrische Maschine
WO2021219449A1 (fr) * 2020-04-27 2021-11-04 Siemens Aktiengesellschaft Gaine

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221843B4 (de) * 2002-05-16 2004-12-30 Minebea Co., Ltd. Elektromotor zur Verwendung als Pumpenmotor und Pumpe
DE102006045781A1 (de) * 2006-09-26 2008-04-03 Hanning Elektro-Werke Gmbh & Co. Kg Antriebseinheit für eine Pumpe, insbesondere Zirkulationspumpe oder Entleerungspumpe
DE102006049326A1 (de) * 2006-10-19 2008-04-30 Siemens Ag Gekapselte elektrische Maschine mit flüssigkeitsgekühltem Stator
DE102008014379A1 (de) * 2008-03-17 2009-09-24 Sycotec Gmbh & Co. Kg Elektromechanische Maschine
DE102017214997A1 (de) * 2017-08-28 2019-02-28 Mahle International Gmbh Elektrische Fluidpumpe
DE102020117266A1 (de) 2020-07-01 2022-01-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Statoranordnung für eine Elektromaschine
DE102021114159A1 (de) * 2021-06-01 2022-12-01 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Elektrischer Kraftfahrzeug-Traktionsmotor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4836147A (en) 1987-12-14 1989-06-06 Ford Motor Company Cooling system for an internal combustion engine
DE4438132A1 (de) 1994-10-27 1996-05-02 Wilo Gmbh Spaltrohrpumpe

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243617A1 (de) * 1982-11-25 1984-05-30 Hermetic-Pumpen Gmbh, 7803 Gundelfingen Pumpe zum foerdern hochkorrosiver medien
GB2145882A (en) * 1983-07-21 1985-04-03 Teikoku Denki Seisakusho Kk Partition structure for a dynamo-electric machine
DE3636404A1 (de) * 1986-10-25 1988-04-28 Richter Chemie Technik Gmbh Magnetkreiselpumpe
DE3639720C1 (de) * 1986-11-20 1993-04-29 Reinecker Heyko Pumpe mit Spaltrohrmotor- oder Spaltrohrmagnetkupplungsantrieb
JP3356480B2 (ja) * 1993-03-18 2002-12-16 株式会社日本触媒 無漏洩ポンプ
DE4342649C1 (de) * 1993-12-14 1995-02-16 Munsch Kunststoff Schweistechn Magnetkreiselpumpe für aggressive Medien
DE59403560D1 (de) * 1994-04-20 1997-09-04 Sulzer Innotec Ag Trennelement und Vorrichtung mit Trennelement
FR2768470B1 (fr) * 1997-09-12 2002-02-01 Mecanique Magnetique Sa Pompe rotative a rotor immerge

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4836147A (en) 1987-12-14 1989-06-06 Ford Motor Company Cooling system for an internal combustion engine
DE4438132A1 (de) 1994-10-27 1996-05-02 Wilo Gmbh Spaltrohrpumpe

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1383227A2 (fr) * 2002-07-17 2004-01-21 Liebherr-Aerospace Lindenberg GmbH Moteur à rotor immergé et son procédé de fabrication
EP1383227A3 (fr) * 2002-07-17 2004-12-29 Liebherr-Aerospace Lindenberg GmbH Moteur à rotor immergé et son procédé de fabrication
US8110958B2 (en) 2005-08-23 2012-02-07 Bsh Bosch Und Siemens Hausgeraete Gmbh Rotor cover with rotor fins extending between stator slots
WO2011131251A1 (fr) * 2010-04-19 2011-10-27 Pierburg Pump Technology Gmbh Pompe électrique pour réfrigérant de véhicule automobile
US10180142B2 (en) 2010-04-19 2019-01-15 Pierburg Pump Technology Gmbh Electric motor vehicle coolant pump
WO2015086099A1 (fr) * 2013-12-10 2015-06-18 Wilo Se Pompe à moteur à rotor humide
CN105849414A (zh) * 2013-12-10 2016-08-10 威乐欧洲股份公司 湿式马达泵
DE102015225189A1 (de) * 2015-12-15 2017-06-22 Robert Bosch Gmbh Elektrische Maschine
WO2021219449A1 (fr) * 2020-04-27 2021-11-04 Siemens Aktiengesellschaft Gaine

Also Published As

Publication number Publication date
EP1158175B1 (fr) 2008-02-13
DE50113576D1 (de) 2008-03-27
DE10025190A1 (de) 2001-12-06
EP1158175A3 (fr) 2005-04-27

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