EP2636904A2 - Pompe - Google Patents

Pompe Download PDF

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Publication number
EP2636904A2
EP2636904A2 EP13156594.7A EP13156594A EP2636904A2 EP 2636904 A2 EP2636904 A2 EP 2636904A2 EP 13156594 A EP13156594 A EP 13156594A EP 2636904 A2 EP2636904 A2 EP 2636904A2
Authority
EP
European Patent Office
Prior art keywords
motor housing
sealing element
pump
sealing
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.)
Withdrawn
Application number
EP13156594.7A
Other languages
German (de)
English (en)
Other versions
EP2636904A3 (fr
Inventor
Norbert Krogmeier
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.)
Hanning Elektro Werke GmbH and Co KG
Original Assignee
Hanning Elektro Werke GmbH and Co KG
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 Hanning Elektro Werke GmbH and Co KG filed Critical Hanning Elektro Werke GmbH and Co KG
Publication of EP2636904A2 publication Critical patent/EP2636904A2/fr
Publication of EP2636904A3 publication Critical patent/EP2636904A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • 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
    • F04D13/0613—Special connection between the rotor compartments
    • 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
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • F04D29/08—Sealings
    • F04D29/10—Shaft sealings
    • F04D29/12—Shaft sealings using sealing-rings
    • F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps

Definitions

  • a pump for water-leading household appliances which has a motor housing with an integrated stator and rotor on the one hand and on the other hand arranged on the outside of a motor housing impeller.
  • the impeller is firmly connected to a drive shaft of the engine.
  • the drive shaft is mounted on plain bearings in the motor housing.
  • a separate shaft seal is provided on a first end side of the motor housing as a sealing means, which is placed as a sleeve on a bearing plate of the motor housing.
  • a pump having an electric motor and an impeller fixed to a drive shaft thereof wherein a rotor of the electric motor is disposed within a split tube (motor housing).
  • the drive shaft slidably mounted in the region of a first end face and a second end face of the split tube via bearing bushes.
  • a sealing collar is attached as sealing means to the first end face of the motor housing.
  • the bushings must be kept in a separate bearing carrier.
  • Object of the present invention is therefore to develop a pump with a mounted in a motor housing drive shaft and a rotatably connected to the drive shaft impeller such that in a simple manner the assembly cost for the storage of the drive shaft and the sealing of the motor housing is reduced by the pump chamber.
  • the invention in conjunction with the preamble of claim 1, characterized in that arranged on the first end face of the motor housing bearing and sealing means are formed by a seal bearing body having an axial bushing portion for sliding mounting on the drive shaft, a radial Has closure portion for covering the motor housing and at least one integrally formed on the axial sleeve portion and / or the radial closure portion compliant sealing element.
  • a one-piece seal bearing body which serves both for supporting the drive shaft and for sealing the motor housing of a pump chamber.
  • the one-piece seal bearing body thus combines in particular sealing and storage functions compared to previously used several components.
  • the assembly effort or assembly time can be reduced as a result.
  • the sealing bearing body has a radial closure portion, on the radial outer edge of a motor housing sealing element is formed.
  • a secure seal of the motor housing can be ensured to the pump room.
  • the motor housing sealing element connects in the radial direction to the closure portion, so that it is preferably formed annularly with a relatively small radial thickness. This can advantageously a seal can be provided with a relatively small use of material.
  • the sealing bearing body on an axial bushing portion, at the axial end of a shaft sealing element is formed.
  • the shaft sealing element virtually forms an axial extension of the bushing section and allows a space-saving sealing of the motor housing in the region of the drive shaft.
  • the closure portion and / or the socket portion serves as a carrier for sealing means, which are arranged relatively close to the axis and close to the axis.
  • the near-axis sealant (shaft sealing element) and the off-axis sealing element (motor housing sealing element) are not directly connected. They are only integrally connected to each other via a disc of the closure portion.
  • the motor housing sealing element and / or the shaft sealing element is connected by injection molding with the bushing section or the closure section of the sealing bearing body.
  • a pump according to an embodiment of the invention shown in the figures is designed as a canned pump 1, which can preferably be used in water-conducting household appliances, such as a dishwasher or the like.
  • the canned pump 1 has a motor housing as a split tube 2, within which a rotor 3 of a synchronous motor and a rotatably connected to the rotor 3 drive shaft 4 are mounted.
  • An unillustrated stator of the synchronous motor can be arranged outside of the can 2.
  • the drive shaft 4 is rotatably connected to a arranged in a pump chamber 5 impeller 6 of the pump.
  • the drive shaft 4 via a freewheel or be coupled via a Drehlose with the impeller 6 of the pump.
  • a seal bearing body 8 is provided which has a bearing and sealing function. How better FIG. 2
  • the bushing portion 9 is formed from the same plastic material as an integrally connected to the split tube 2 further bushing portion 10, by means of which the drive shaft 4 in the region of a second End face 11 of the split tube 2 is slidably mounted on the same.
  • the sealing bearing body 8 has a radial closure section 12, by means of which an opening of the split tube 2 can be covered.
  • the closure portion 12 is integrally connected to the female portion 9 and connects in the radial direction outwardly to the female portion 9.
  • the closure portion 12 and the sleeve portion 9 are made of the same plastic material.
  • the split tube 2 is made of the same plastic material as the bushing section 9 or the closure section 12.
  • the bushing section 9 and the further bushing section 10 form a bearing means, by means of which the drive shaft 4 is rotatably mounted in the motor housing (split tube 2).
  • the radially extending closure portion 12 of the seal bearing body 8 has a disc 13 from which a first closure ring 14 protrudes on a side facing the motor housing 2.
  • the first locking ring 14 is used to fix the sealing bearing body 8 to the motor housing or gap tube 2.
  • the first locking ring 14 extends coaxially to the drive shaft 4 and to an axis A of the split tube 2.
  • the first locking ring 14 lies with its outer surface on a flat surface 15 of the split tube 2 at.
  • the second locking ring 16 is arranged coaxially with the split tube 2 or the impeller 6.
  • the sealing bearing body 8 also has a resilient, off-axis sealing element 18 and a resilient, close-to-axis sealing element 19.
  • the off-axis sealing element 18 is formed as a motor housing sealing element, which is integrally formed on a radial outer edge 20 of the closure portion 12.
  • the annular motor housing sealing element 18 is formed angular. It has a first leg 21, which adjoins a circumferential surface 22 of the radial outer edge 20 of the closure portion 12. This essentially becomes ensures a seal in the radial direction.
  • the near-axis sealing element 19 is formed as a shaft-sealing element, which is integrally formed on an axial end of the sleeve portion 10, preferably on a side facing the impeller 6 of the female portion 9 on the same. It serves to seal the can 2 with respect to the pump chamber 5 in the region of the drive shaft 4.
  • the motor housing sealing element 18 and the shaft sealing element 19 are connected by injection molding to the sealing section 12 or bushing section 9 of the sealing bearing body 8.
  • These sealing means consist of the same elastic material, in particular of an elastomer.
  • the motor housing sealing element 18 and the shaft sealing element 19 are arranged remote from each other and extend substantially within a radial plane E, along which the disc 13 of the closure section 12 extends.
  • the motor housing sealing element 18 and the shaft sealing element 19 are each annular.
  • the closure portion 12 and the sleeve portion 9 are made of a rigid plastic material, which is suitable for mounting the drive shaft 4.
  • seal bearing body 8 according to the invention can also be used for other types of pumps.
  • the seal bearing body 8 essentially has a bearing and sealing function. In addition, it can have a closure and / or connection function, which is provided in the present exemplary embodiment by forming closure rings 14 and 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13156594.7A 2012-03-07 2013-02-25 Pompe Withdrawn EP2636904A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012203615A DE102012203615B4 (de) 2012-03-07 2012-03-07 Pumpe

Publications (2)

Publication Number Publication Date
EP2636904A2 true EP2636904A2 (fr) 2013-09-11
EP2636904A3 EP2636904A3 (fr) 2014-10-01

Family

ID=47750509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13156594.7A Withdrawn EP2636904A3 (fr) 2012-03-07 2013-02-25 Pompe

Country Status (4)

Country Link
US (1) US20130236297A1 (fr)
EP (1) EP2636904A3 (fr)
CN (1) CN103307019A (fr)
DE (1) DE102012203615B4 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013007624A1 (de) * 2013-05-02 2014-11-06 Wilo Se Motorenkreiselpumpe mit einem Lagerträger
CN105863763B (zh) * 2016-05-24 2018-02-27 杭州汽轮动力集团有限公司 利用有机工质朗肯循环发电用的屏蔽膨胀机
SE542626C2 (en) 2018-04-11 2020-06-23 Roplan Holding Ab A pump housing device for a fluid pump, and a fluid pump
CN112689716B (zh) * 2018-10-18 2023-06-30 波士顿科学国际有限公司 血泵轴轴承
DE202024100525U1 (de) 2024-02-02 2024-03-18 Hanning Elektro-Werke Gmbh & Co. Kg Spaltrohrmotor und Nassläuferelektropumpe hiermit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823461A1 (de) 1988-07-11 1990-01-18 Miele & Cie Pumpvorrichtung fuer fluessigkeiten
DE9302945U1 (de) 1993-03-01 1993-11-11 Hanning Elektro-Werke GmbH & Co, 33813 Oerlinghausen Mit einer Anlaufhilfe ausgestatteter Synchronmotor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA584954A (fr) * 1954-07-01 1959-10-13 Westinghouse Electric Corporation Unite de pompe a moteur
DE1653726A1 (de) * 1967-10-26 1971-12-23 Hollesens Fabrikker A S H Elektromotorangetriebene Kreiselpumpe
DE1937120A1 (de) * 1969-07-22 1971-04-08 Loewe Pumpenfabrik Gmbh Entlueftungsventil fuer Spaltrohrmotorpumpen
DE2156610A1 (de) * 1971-11-15 1973-05-24 Allweiler Ag Wellenlagerung fuer eine stopfbuchsenlose heizungsumwaelzpumpe
JPS6134392A (ja) * 1984-07-27 1986-02-18 Hitachi Ltd 電動ポンプ
GB2212869B (en) * 1987-11-24 1992-05-06 Warman Int Ltd Elastomeric pump casing seal
JP2610356B2 (ja) * 1990-03-29 1997-05-14 東京電力株式会社 ポンプ用軸封装置
FR2667653B1 (fr) * 1990-10-05 1995-01-27 Electro Mec Nivernais Motopompe centrifuge.
DE19907555B4 (de) * 1998-09-02 2013-09-12 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Zusammenbau einer Flüssigkeitspumpe, insbesondere einer Laugenpumpe für Haushaltsgeräte
DE19943577A1 (de) * 1999-09-13 2001-03-15 Wilo Gmbh Pumpengehäuse mit integrierter Elektronik
DE10331602B4 (de) * 2002-08-31 2005-08-25 Oase Gmbh Tauchmotorpumpe mit Frostschutzeinrichtung
DE60306594T2 (de) * 2002-09-03 2006-11-16 Emerson Appliance Motors Europe S.R.L., Moncalieri Kreiselpumpe für Haushaltsgeräte
CN2916195Y (zh) * 2006-01-26 2007-06-27 江门市汉宇电器有限公司 一种离心式排水泵

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823461A1 (de) 1988-07-11 1990-01-18 Miele & Cie Pumpvorrichtung fuer fluessigkeiten
DE9302945U1 (de) 1993-03-01 1993-11-11 Hanning Elektro-Werke GmbH & Co, 33813 Oerlinghausen Mit einer Anlaufhilfe ausgestatteter Synchronmotor

Also Published As

Publication number Publication date
DE102012203615A1 (de) 2013-09-12
DE102012203615B4 (de) 2013-11-21
CN103307019A (zh) 2013-09-18
US20130236297A1 (en) 2013-09-12
EP2636904A3 (fr) 2014-10-01

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