EP3080459A1 - Nassläufermotorpumpe - Google Patents
NassläufermotorpumpeInfo
- Publication number
- EP3080459A1 EP3080459A1 EP14784400.5A EP14784400A EP3080459A1 EP 3080459 A1 EP3080459 A1 EP 3080459A1 EP 14784400 A EP14784400 A EP 14784400A EP 3080459 A1 EP3080459 A1 EP 3080459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wet
- rotor
- motor housing
- motor
- pump according
- 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
Links
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 238000013016 damping Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920003247 engineering thermoplastic Polymers 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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
Definitions
- the invention relates to a wet-rotor motor pump with one of a
- Stator surrounding the motor housing and a rotor separated from the stator by a split pot, which runs in the rotor space formed by the split pot and is connected via a shaft to the pump impeller.
- the object of the invention is to improve a wet-rotor motor pump of the type mentioned so that when using a split pot made of plastic, the advantages of the plastic material used and its disadvantages are compensated.
- the inwardly directed flange of the motor housing in particular with its inner voltage applied to the gap pot outside annular, sleeve or tubular extension essential sealing, strength and damping functions.
- the plastic sheathing pot at its end facing the pump impeller to the outside is proposed that the plastic sheathing pot at its end facing the pump impeller to the outside
- the hydraulic side rests directly or via an intermediate layer on the inwardly directed motor housing flange.
- the inwardly directed motor housing flange is doubly usable.
- the inner end of the motor housing flange forms a radial contact surface for the outside of the split pot and the side of the motor housing flange facing the pump forms an axial contact surface for the split top flange if the containment shell has a flange.
- the motor housing flange takes over essential functions of the gap top flange.
- the motor housing with the integrally formed flange on the hydraulic side performs the tasks of strength against the forces of radial, axial and compressive forces.
- the gap-top flange essentially continues to assume the function of sealing
- the flange can be made thinner on the split pot, which simplifies the production. Also improves the flange on the motor housing with the concentric recording of Spaltmastrohres the centering of the inner rotor. As a result, the split pot is much easier to manufacture.
- the hold of the split pot is improved when the split top flange is held on the motor housing flange by a positive connection, in particular by a latching connection to be fixed in both axial directions.
- the housing of the containment shell on the electronics side serves as the second one
- the containment shell is statically securely centered over two radial receptacles in front of and behind the stator and has a very good coaxial position with respect to the stator.
- Stiffening rings on the containment shell placed in front of and behind the stator, increase the applicability of the product to extreme conditions such as high temperatures and pressures.
- the geometric structure of the engine allows the implementation of a better tightness to the environment.
- Fig. 2 shows a second embodiment with Spalttopfflansch.
- the wet-rotor motor pump has on the hydraulic side a pump housing 1, which surrounds a pump chamber 2, in which a pump impeller 3 runs.
- a motor housing 4 is fixed, which surrounds a stator 5, in which a split pot 6 (or split tube) rests, which forms a rotor space in which the motor rotor 7 runs.
- the rotor 7 has a coaxial shaft 8, which is guided by two bearings 9, 10 arranged inside the gap pot 6 and carries the pump impeller 3 at one end.
- annular motor housing flange 12 On the outer wall 11 of the motor housing 4, an inwardly directed annular motor housing flange 12 is formed on the hydraulic side, at its inner end an annular extension 12a is formed, whose free end is directed to the stator 5 out.
- the annular extension 12a forms a coaxial central opening 13 which surrounds the containment shell 6 on the outside in such a way that the annular enlargement rests positively on the cylindrical outer surface of the containment shell or can.
- the free end of the annular extension 12a is directed towards the pump impeller 3 and in a further embodiment, not shown, the annular extension 12a projects beyond the motor housing flange 12 on both sides.
- the split pot 6 has in the embodiment of Figure 1 on the hydraulic side an outwardly directed, annular thin-walled integrally formed flange 14, the on the outer surface of the motor housing flange 12 fits tightly, which faces the pump impeller 3.
- the plastic gap pot 6 is centered coaxially via a radial fit in a recess of the motor housing wall 11.
- the containment shell thus has, in addition to the can, a molded flange 14, which nestles on the hydraulic side of the flange 12 of the motor housing.
- the flange 14 of the containment shell 6 which closely fits against the flange 12, essentially performs only the function of separating media and can therefore be made very thin-walled. The necessary pressure forces are from the flange 12 of the
- Motor housing flange prevents the movement of the containment shell in the direction of the electronics housing 15.
- the second embodiment shown in Fig. 2 differs from the previously described embodiment in that the spatter pot 6 on the
- Pump impeller 3 facing side has no outwardly directed flange and within a sleeve-shaped inner end 12 a of
- Motor housing flange 12 ends.
- the end of the gap pot forms with the end of the motor housing flange and thus with the annular
- Extension 12a a positive fluid-tight connection.
- At least one damping element is arranged between the motor housing flange 12 and the containment shell 6, in particular the gap top flange 14, which is not shown in the drawings.
- Pump housing 1 to prevent.
- the rear attachment of the can 6 to the motor housing 4 may, for. B. by means of bayonet, circlips, etc.
- this function is via a
- Fixing ring or centering ring 19 realized from plastic, which the
- the containment shell is positioned by means of a centering flange 19 and vibrations are reduced or damped. This centering can continue as a seal between the engine and
- the centering ring is integrally formed on the electronics housing.
- Radial bearing on the hydraulic side is positively connected by means of a bearing support 16 with the containment shell and / or non-positively.
- Heat exchanger between the rotor chamber and the hydraulic space is used. Furthermore, this element can have the seat for a dynamic seal, which closes the gap to the rotor shaft 8. By means of a secondary seal on the back side of the impeller coarse particles are kept away from the dynamic seal.
- the shaft is formed with a blind hole 26 and closed on the hydraulic side.
- Transverse bores 27 between radial bearing 9 and dynamic seal 25 allow internal circulation of the medium in the rotor space.
- stiffening rings can be optionally mounted on the containment shell 6 in front of and behind the stator 5.
- a ring stiffening the containment shell can be mounted on the containment shell 6 from the electronics side.
- the radial bearing 9 on the hydraulic side is positively connected by means of a bearing carrier 16 with the gap pot and / or non-positively.
- On the bearing carrier is a flat
- this element 21 includes the seat for a dynamic seal 25, which closes the gap to the rotor shaft 8.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013020387.2A DE102013020387A1 (de) | 2013-12-10 | 2013-12-10 | Nassläufermotorpumpe |
PCT/EP2014/002556 WO2015086099A1 (de) | 2013-12-10 | 2014-09-20 | Nassläufermotorpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3080459A1 true EP3080459A1 (de) | 2016-10-19 |
EP3080459B1 EP3080459B1 (de) | 2021-03-31 |
Family
ID=51730484
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14784400.5A Active EP3080459B1 (de) | 2013-12-10 | 2014-09-20 | Nassläufermotorpumpe |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3080459B1 (de) |
CN (1) | CN105849414A (de) |
DE (1) | DE102013020387A1 (de) |
WO (1) | WO2015086099A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014008971A1 (de) | 2014-06-23 | 2015-12-24 | Wilo Se | Nassläufermotorpumpe |
WO2024137309A1 (en) * | 2022-12-22 | 2024-06-27 | Schlumberger Technology Corporation | Submersible pumping system with hermetically sealed motor |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1098820B (de) * | 1959-09-04 | 1961-02-02 | Lederle Pumpen & Maschf | Durch einen Spaltrohrmotor angetriebene mehrstufige Kreiselpumpe |
FR1307616A (fr) * | 1961-12-06 | 1962-10-26 | Sigmund Pumps Ltd | Perfectionnements aux pompes entraînées électriquement |
DE1802561A1 (de) * | 1968-10-11 | 1970-05-27 | Licentia Gmbh | Heisswasser-Umwaelzpumpe |
DE1811430A1 (de) * | 1968-11-25 | 1970-06-11 | Gummi Jaeger Kg Gmbh & Cie | Hydraulische Stroemungsmaschine |
DE9100515U1 (de) * | 1991-01-17 | 1991-04-04 | Friatec-Rheinhütte GmbH & Co, 65203 Wiesbaden | Magnetgekuppelte Kreiselpumpe |
DE4342649C1 (de) * | 1993-12-14 | 1995-02-16 | Munsch Kunststoff Schweistechn | Magnetkreiselpumpe für aggressive Medien |
DE19545561A1 (de) * | 1995-12-07 | 1997-06-12 | Pierburg Ag | Pumpe-Motoreinheit |
DE19824345A1 (de) * | 1998-06-02 | 1999-12-09 | Wilo Gmbh | Spaltrohrpumpe mit Wicklungsträger |
DE19943862A1 (de) * | 1999-09-13 | 2001-03-15 | Wilo Gmbh | Naßläuferpumpe mit Montageplatte |
DE10025190A1 (de) * | 2000-05-20 | 2001-12-06 | Wilo Gmbh | Spaltrohrmotor mit Folienspaltrohr |
JP2002213385A (ja) * | 2001-01-19 | 2002-07-31 | Ebara Corp | キャンドモータ及びキャンドモータポンプ |
DE10246349A1 (de) * | 2002-10-04 | 2004-04-29 | Siemens Ag | Kühlvorrichtung für ein Kraftfahrzeug mit einem Kühlkanal für ein Kühlmedium |
JP3877211B2 (ja) * | 2003-03-20 | 2007-02-07 | 株式会社イワキ | マグネットポンプにおけるリアケーシングの製造方法 |
ATE377152T1 (de) * | 2005-09-24 | 2007-11-15 | Grundfos Management As | Pumpenaggregat |
DE102005057661A1 (de) * | 2005-12-01 | 2007-06-06 | Wilo Ag | Kreiselpumpe mit Spalttopf |
DE102006049292A1 (de) * | 2006-10-19 | 2008-04-30 | Wilo Ag | Spaltrohrmotor |
DE102007049641A1 (de) * | 2007-10-17 | 2009-04-23 | Daimler Ag | Pumpe und Brennstoffzellensystem mit einer derartigen Pumpe |
JP5371939B2 (ja) * | 2010-12-07 | 2013-12-18 | 株式会社市丸技研 | 流体送り装置及びタイヤ加硫装置 |
JP5912738B2 (ja) * | 2012-03-27 | 2016-04-27 | 日本電産サンキョー株式会社 | ポンプ装置 |
TWI594551B (zh) * | 2012-03-29 | 2017-08-01 | 荏原製作所股份有限公司 | 密封電動機、真空泵 |
-
2013
- 2013-12-10 DE DE102013020387.2A patent/DE102013020387A1/de not_active Withdrawn
-
2014
- 2014-09-20 EP EP14784400.5A patent/EP3080459B1/de active Active
- 2014-09-20 CN CN201480067020.9A patent/CN105849414A/zh active Pending
- 2014-09-20 WO PCT/EP2014/002556 patent/WO2015086099A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN105849414A (zh) | 2016-08-10 |
EP3080459B1 (de) | 2021-03-31 |
DE102013020387A1 (de) | 2015-06-11 |
WO2015086099A1 (de) | 2015-06-18 |
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