EP1557566B1 - Kreiselpumpe für Waschmaschinen, - Google Patents

Kreiselpumpe für Waschmaschinen, Download PDF

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Publication number
EP1557566B1
EP1557566B1 EP04001620A EP04001620A EP1557566B1 EP 1557566 B1 EP1557566 B1 EP 1557566B1 EP 04001620 A EP04001620 A EP 04001620A EP 04001620 A EP04001620 A EP 04001620A EP 1557566 B1 EP1557566 B1 EP 1557566B1
Authority
EP
European Patent Office
Prior art keywords
pump
impeller
stator
peripheral wall
casing
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.)
Expired - Lifetime
Application number
EP04001620A
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English (en)
French (fr)
Other versions
EP1557566A1 (de
Inventor
Kouichi Sadakane
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.)
Nidec Shibaura Corp
Original Assignee
Nidec Shibaura Corp
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 Nidec Shibaura Corp filed Critical Nidec Shibaura Corp
Priority to DE602004005297T priority Critical patent/DE602004005297T2/de
Priority to EP04001620A priority patent/EP1557566B1/de
Publication of EP1557566A1 publication Critical patent/EP1557566A1/de
Application granted granted Critical
Publication of EP1557566B1 publication Critical patent/EP1557566B1/de
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
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • 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

Definitions

  • the present invention relates to a pump that intakes and ejects a liquid, and a washing apparatus using the pump.
  • a pump of the present invention has a structure in which an impeller disposed within a pump chamber and a motor portion for rotating the impeller make a unit so that a small size, a low profile, a low weight and a low cost can be realized.
  • a washing apparatus of the present invention is manufactured using a pump of the present invention so as to realize a small size.
  • washing apparatus many types use pumps. Such the washing apparatus in which a pump inside is used in an ordinary household , e. g. ,a dishwasher. Therefore, a compact sizes, a low price and easy operation are requested for the washing apparatus in the market. Accordingly, a pump that is mounted in the apparatus is also required to be a compact size and a lightweight and is available in a low cost.
  • This pump has a structure in which one of magnet couplings is attached to a shaft of an electric motor for rotating an impeller and the other magnet coupling is attached to the impeller that is covered with a casing, so that a rotational force of the electric motor is transmitted to the impeller located in the casing via a magnetic coupling force of the magnet coupling and the impeller is rotated for transferring a liquid.
  • This pump has a structure in which an impeller is attached directly to an output shaft of an electric motor, and this impeller is covered with a casing, so that the impeller is rotated directly by the rotation of the electric motor for transferring a liquid.
  • the electric motor portion and a pump region portion including the impeller are arranged in the axial direction in each of the above-explained conventional pumps, it is difficult to shorten a length of the entire pump in the axial direction.
  • the pump described in Japanese unexamined patent publication No. 2003-106285 has a disadvantage that a lot of components are necessary since the shaft of the electric motor and the shaft of the impeller have to be coupled to each other by a magnet coupling on the axis.
  • the pump described in Japanese unexamined patent publication No. 11-32962 has a drawback that although the impeller can be attached directly to the output shaft of the electric motor, some seal structures must be equipped between the casing and the output shaft.
  • US 2001/0004435A1 discloses a rotary pump with hydrodynamically suspended impeller adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.
  • EP 1 227 247 A2 discloses a motor-pump of the regenerative type that comprises a driving motor housed coaxially inside the casing of the pump, so as to be contained within the axial thickness of the same pump.
  • the object of the present invention is to provide a further pump with a small size, especially a length in an axial direction so as to realize a low-profile, that additionally has a lightweight and a low cost by reducing the number of components and that can adjust a flow rate by controlling the revolution speed of the motor.
  • Another object of the present invention is to provide a washing apparatus having small size, a low profile, a light weight, a high performance and a low cost by utilizing a pump in which the above-mentioned object is achieved.
  • a pump according to the present invention is defined in independent claim 1.
  • the dependent claims pertain to preferred embodiments thereof.
  • a washing apparatus according to the present invention is defined in claim 9.
  • Fig. 1 is a vertical cross section of the pump 1 according to a first embodiment.
  • the pump 1 includes a substantially cylindrical stator 10.
  • the stator 10 includes a stator core 11 in which a plurality of polar teeth is arranged to be directed to the inner direction, a stator coil 12 that is turned around each of the polar teeth of the stator core 11 and a circuit board 13 on which a motor driving circuit is mounted for controlling current supply to the stator coil 12.
  • This circuit board 13 is disposed at the upper end or the lower end of the substantially cylindrical stator core 11 and the stator coil 12.
  • This stator 10 is covered with a molding material 14 that has insulating properties.
  • This molding material is a synthetic resin that has insulating properties, and it also has good water resisting properties.
  • a pump is usually used in a humid and an easily submerged environment. Since the stator is covered with the molding material, insulating properties and water resisting properties of the stator 10 can be improved, so that a long life and a high durability of the pump can be realized.
  • the casing 41 includes an upper casing 41A made of a resin that has openings at both ends in the vertical direction and a lower casing 41B made of a stainless steel sheet for closing the lower end opening of the upper casing 41A.
  • an O ring 42 is disposed at the fastening portion between the upper casing 41A and the lower casing 41B, which are fastened by a screw 43 so that water proofing property is improved.
  • the upper casing 41A includes a substantially cylindrical upper peripheral wall portion 41A1, a lower peripheral wall portion 41A2 that is disposed continuously to the lower end of the upper peripheral wall portion 41A1 and has diameter larger than the upper peripheral wall portion 41A1, a connection opening portion 41A3 that is formed on the outer side face of the lower peripheral wall portion 41A2 in a continuous manner, and a tube-like delivery pipe 41A4 that is connected to the connection opening portion 41A3 and is drawn outward.
  • the upper peripheral wall portion 41A1 and the lower peripheral wall portion 41A2 constitute a ring-like peripheral wall that forms the pump chamber 20.
  • the upper end of the peripheral wall is opened so as to form the inlet 21, while the lower end of the peripheral wall is sealed with the lower casing 41B.
  • a part of the lower side face of the peripheral wall is connected to the delivery pipe 41A4 via the connection opening portion 41A3, and the outer end portion of the delivery pipe 41A4 is opened to form the outlet 22.
  • stator 10 engages the outer surface of the upper peripheral wall portion 41A1, and the lower face of the stator 10 abuts a ring-like flat portion that is disposed between the upper peripheral wall portion 41A1 and the lower peripheral wall portion 41A2 so as to link them.
  • a delivery chamber 20B is positioned beneath the stator 10.
  • the lower casing 41B that seals the lower end of the peripheral wall (that includes the upper peripheral wall portion 41A1 and the lower peripheral wall portion 41A2) is made of a stainless steel sheet.
  • the lower casing 41B Compared with the upper casing 41A that has a solid structure, the lower casing 41B has a flat shape and is required to have sufficient strength.
  • a stainless steel sheet has sufficient mechanical intensity compared with a resin, so even if a thickness of the lower casing 41B is decreased, an intensity that is sufficient for enduring a pressure inside the pump chamber 20 can be secured.
  • a stainless steel sheet has high anti-corrosion characteristics compared with a usual steel material, for example. Therefore, it is hardly eroded even in a liquid in which salt, oil or detergent is dissolved, in a hot liquid such as a hot water or in a humid atmosphere after water is drained.
  • this lower casing 41B can be made of other metals than the stainless steel sheet, such as various steel sheets that have enough strength to endure a pressure inside the pump chamber 20 and are faced with anti-corrosion characteristic, an aluminum and an alloy including an aluminum as a main ingredient, an alloy such as a brass including copper and zinc as main ingredients, or other metals that have anti-corrosion characteristics.
  • a reinforced resin can be used depending on operating temperature and a type of fluid.
  • a rotating member 23 is disposed in the pump chamber 20 in a rotatable manner.
  • the rotating member 23 includes an impeller 27, a rotor magnet 24 and a bearing mechanism.
  • a fixed shaft 30 that is arranged to stand on the lower casing 41B, and the fixed shaft 30 is inserted through a cylindrical bearing 33 that is disposed at the middle portion of the impeller 27 to that a slide bearing is constituted.
  • the impeller 23 is supported by the fixed shaft 30 in a rotatable manner.
  • the fixed shaft 30 is fixed to the lower casing 41B by inserting one end of the fixed shaft 30 in the through-hole of the lower casing 41B and by fastening a box nut 36 from the opposite side thereof via an O ring 35.
  • a thrust washer 31 is engaged with the other end of the fixed shaft 30 so as to prevent the bearing 33 from dropping out.
  • the fixed shaft 30 is fixed only at one end, it is not necessary to insert an arm for supporting the other end of the fixed shaft 30 in the pump chamber. As a result, resistance of a fluid that flows in the pump chamber 20 can be reduced.
  • this bearing 33 is made of a bearing metal that does not need lubricating oil. Accordingly, relatively simple and low-cost structure can be realized without a complicated seal structure.
  • slide bearing in which a rotation shaft is inserted in and supported by a fixed bearing
  • slide bearing that has a sealing structure for using lubricant or a ball bearing
  • the impeller 27 is a centrifugal type impeller having a substantially conical impeller base 27A and a plurality of blades 27B arranged on the upper surface of the impeller base 27A in the circumferential direction.
  • the rotor magnet 24 has a circular shape and is provided integrally so as to link outer periphery rims of the plural blades 27B outside of the impeller 27.
  • the rotor magnet 24 includes a plurality of magnetic poles that are arranged in the circumferential direction and are magnetized in the radial direction.
  • the rotor magnet 24 faces with the stator 10 in the radial direction with a radial gap , and the upper peripheral wall portion 41A1 is located in between the radial gap, and the stator 10 engages the outer portion of the upper peripheral wall portion 41A1.
  • This rotor magnet 24 is made of a plastic magnet. The plastic magnet is easily formed into a complicated shape compared with a sintered magnet or a cast magnet.
  • the rotor magnet 24 is a plastic magnet, it is possible to weld and fix the rotor magnet 24 with the impeller 27 if it is made of a resin. In this case, the rotor magnet 24 is hardly dropped off from the impeller 27 during a long period of use, compared with the case where they are bonded to each other with an adhesive or a fit-in process.
  • a magnet having more magnetic flux density e.g., a sintered rare earth magnet may be used.
  • the rotor magnet 24 may be corroded in water containing salt or oil and fat content since it contains a ferromagnetic metal. Therefore, the surface thereof is covered with a film that is magnetically transparent and has anti-corrosion characteristics.
  • the lower end of the rotor magnet 24 faces the lower end of the upper peripheral wall portion 41A1.
  • a gap is formed between the lower end of the rotor magnet 24 and the upper face of the peripheral portion of the impeller base 27A in the axial direction, and the gap faces with the delivery chamber 20B.
  • the rotor magnet 24 that is a part of the rotating member 23 and the stator 10 constitute a brushless DC motor.
  • the motor driving circuit can control the motor by receiving a signal from the outside of the motor, e.g., a control circuit of an apparatus in which the pump is embedded. In this way, the motor can be controlled in accordance with a flow rate that is required to the apparatus.
  • this motor is not limited to a brushless DC motor.
  • this motor is possible to use an induction motor or an AC servo motor.
  • the pump 1 having the structure as explained above, when a current is supplied to the stator coil 12 first, the stator coil 12 is energized, the poles of the stator core 11 form magnetic poles, the rotor magnet 24 generates a rotation force due to an electromagnetic interaction with the magnetic poles of the rotor magnet 24, and the rotor magnet 24 rotates together with the impeller 27.
  • the impeller 27 rotates, a turning flow is generated along the circumferential direction of the impeller 27 in the pump chamber 20. Then the rotation of the impeller 27 leads the fluid to the lower end outer periphery (the delivery chamber 20B) of the impeller 27 via the gap between the rotor magnet 24 and the impeller base 27A.
  • the fluid in the delivery chamber 20B is gathered in the confluent chamber 20C, is led to the delivery pipe 41A4 and ejected from the outlet 22. In this way, the rotation of the impeller 27 that is united with the brushless DC motor transmits the fluid from the inlet 21 to the outlet 22.
  • the pump 1 in this embodiment that is explained above as the present invention has a structure in which the rotor magnet 24 that constitutes a part of the motor is disposed at the peripheral portion of the impeller 27 integrally, and the pump portion and the motor portion is integrated. Therefore, the pump can be a low profile type without deteriorating the performance, so that an apparatus in which the pump is used can be downsized as a whole. Moreover, a weight of the pump can be reduced, and the cost of the pump can be also reduced. In addition, durability of the pump over a long period can be improved.
  • a second embodiment is a washing apparatus to which the pump 1 that is explained in the first embodiment in detail is attached.
  • a dishwasher that is used widely in ordinary households is exemplified for the explanation.
  • Fig. 2 is a general vertical cross section showing a joint portion between the pump 1 in the second embodiment and a water tank 50 in a dishwasher 2 that utilizes the pump 1.
  • the dishwasher 2 includes a washing chamber for housing dishes (not shown) and a water tank 50 for storing wash water that is used for washing dishes or waste water after washing.
  • Wash water 61 that is stored in the water tank 50 before washing is taken in the pump 1 from the water tank 50 and is sent to the washing chamber.
  • waste water 62 that was recovered in the water tank 50 after washing is taken in the pump 1 from the water tank 50 and is ejected to the outside of the apparatus.
  • the lower end of the water tank 50 of the dishwasher 2 is provided with a connection opening portion 53, which is connected to the inlet 21 of the pump 1.
  • a net 58 is disposed at the vicinity of the connection opening portion 53 for collecting garbage that was dropped off the dishes when being washed.
  • the peripheral surface of a connection pipe 52 and the inner circumferential surface of the upper peripheral wall portion 41A1 of the pump are connected via an O ring 57.
  • the upper end of the pump 1 abuts the bottom surface 54 of the water tank 50 for registration, so that a rattling state when installing the pump 1 in an apparatus can be suppressed.
  • the delivery pipe 41A4 of the pump 1 is connected to a switching valve (not shown).
  • the switching valve has two switching ports. One port is connected to the washing chamber, and the other port is connected externally. By switching the switching valve, an operation for feeding wash water 61 to a washing chamber and another operation for draining the waste water 62 externally can be switched.
  • a structure and a driving method of this dishwasher 2 are similar to a structure and a driving method of a general dishwasher, so explanation of them is omitted.
  • the washing apparatus or the dishwasher having the structure of the present invention realizes a small size and a low cost of the apparatus by using the compact and low profile pump 1.
  • further cost reduction is achieved and problems including vibration and noise are reduced.
  • the pump 1 of the present invention can be also applied to a washing machine, a water heater, a water circulation apparatus for a bath, or other washing apparatus using water, or other various fluid circulation and supplying apparatus, so as to contribute to downsizing, weight reduction or cost reduction of them.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (9)

  1. Pumpe (1):
    - mit einem Pumpengehäuse (41), das im Inneren eine Pumpenkammer (20) umschließt;
    - mit einer Einlassöffnung (21), die am Pumpengehäuse (41) vorgesehen und mit der Pumpenkammer (20) verbunden ist;
    - mit einer Auslassöffnung (22), die am Pumpengehäuse (41) vorgesehen und mit der Pumpenkammer (20) verbunden ist;
    - mit einem Laufrad (27), das in der Pumpenkammer (20) drehbeweglich angeordnet ist;
    - mit einem Motorbereich (10, 24) zum Drehen des Laufrades (27), und wobei
    - das Laufrad (27) gedreht wird, so dass die Pumpe (1) eine Flüssigkeit in die Pumpenkammer (20) durch die Einlassöffnung (21) einlässt und die Flüssigkeit durch die Auslassöffnung (22) ausstößt, wobei
    - das Pumpengehäuse (41) eine im Wesentlichen zylindrische Umfangswand (41A1, 41A2) mit einem Ende (41A1), das als Einlassöffnung (21) geöffnet ist, und mit einem anderen Ende (41A2), das abgedichtet ist, aufweist,
    - die Umfangswand (41A1, 41A2) die Pumpenkammer (20) im Inneren umschließt,
    - die Auslassöffnung (22) auf der Umfangswand (41A1, 41A2) ausgebildet ist, und
    - der Motorbereich (10, 24) einen ringförmigen Stator (10), der auf der Außenseite der Umfangswand (41A1, 41A2) im Wesentlichen koaxial angeordnet ist, und einen ringförmigen Rotormagneten (24) aufweist, der an einem Umfangsbereich des Laufrades (27) einstückig vorgesehen ist, um somit dem Stator (10) in radialer Richtung mit einer radialen Aussparung gegenüberzuliegen, und die Umfangswand (41A1, 41A2) in der radialen Aussparung angeordnet ist, und
    - der Motorbereich (10, 24) angetrieben wird, um somit eine Rotationskraft direkt auf das Laufrad (27) aufzubringen, gekennzeichnet durch eine fixierte Welle (30), die auf einem unteren Gehäuse (41B) des Pumpengehäuses (41) angeordnet ist und durch ein zylindrisches Lager (33) eingesetzt wird, welches am mittleren Bereich des Laufrades (27) angeordnet ist, so dass ein Lagerbereich (33) gebildet wird, wobei der abdichtende Endbereich (41A2) der Umfangswand (41A1, 41A2) mit dem unteren Gehäuse (41B) abgedichtet ist, das mit dem Lagerbereich (33) zum Abstützen des Laufrades (27) drehbeweglich vorgesehen ist.
  2. Pumpe (1) gemäß Anspruch 1, wobei der Stator (10) eine Mehrzahl von polaren Zähnen umfasst, die nach innen gerichtet und in Umfangsrichtung angeordnet sind, und der Rotormagnet (10) eine Mehrzahl von magnetischen Polen umfasst, die in radialer Richtung ausgerichtet und in Umfangsrichtung angeordnet sind.
  3. Pumpe (1) gemäß Anspruch 1 oder 2, wobei das Laufrad (27) ein Zentrifugaltyp ist, in dem eine Mehrzahl von Blättern (27B) auf der Umfangsfläche einer im Wesentlichen konischen Basis (27A) in Umfangsrichtung angeordnet ist, und der Rotormagnet (24) am Außenumfang des Laufrades (27) einstückig fixiert ist, um somit eine Aussparung in axialer Richtung mit dem Außenumfang eines Bodenbereiches der Basis (27A) zu bilden.
  4. Pumpe (1) gemäß einem der Ansprüche 1 bis 3, wobei die Umfangswand (41A1, 41A2) des Pumpengehäuses (41) eine zylindrische Wand (41A1), die der Umfangsfläche des Rotormagneten (24) des Laufrades (27) gegenüberliegt und einen offenen Endbereich der Umfangswand (41A1, 41A2) bildet, und eine Wand (41A2) mit großem Durchmesser umfasst, die einen Durchmesser aufweist, der größer als die zylindrische Wand (41A1) ist und einen abdichtenden Endbereich der Umfangswand (41A1, 41A2) bildet, wobei die zylindrische Wand (41A1) und die Wand (41A2) mit großem Durchmesser ständig miteinander verbunden sind, und ein Teil der Wand (41A2) mit großem Durchmesser mit der Auslassöffnung (22) versehen ist.
  5. Pumpe (1) gemäß einem der Ansprüche 1 bis 4, wobei der abdichtende Endbereich (41A2) der Umfangswand (41A1, 41A2) mit einer Bodenplatte (41B), die aus einem Metall mit Korrosionsschutzeigenschaften hergestellt ist, abgedichtet ist.
  6. Pumpe (1) gemäß einem der Ansprüche 1 bis 5, wobei der Stator (10) einen Statorkern (11) mit einer Mehrzahl von polaren Zähnen, eine Statorspule (12), die sich um die polaren Zähne des Statorkerns (11) dreht, und eine Leiterplatte (13) umfasst, die eine Schaltung zum Steuern/Regeln der Stromversorgung der Statorspule (12) bildet, die mit einer Formmasse (14) mit Isoliereigenschaften bedeckt ist.
  7. Pumpe (1) gemäß einem der Ansprüche 1 bis 6, wobei eine Fläche des Rotormagneten (24) mit einer Schicht mit Korrosionsschutzeigenschaften bedeckt ist.
  8. Pumpe (1) gemäß einem der Ansprüche 1 bis 7, wobei der Stator (10) einen Statorkern (11) mit einer Mehrzahl von Zähnen, eine Statorspule (12), die sich um die polaren Zähne des Statorkerns (11) dreht, und eine Leiterplatte (13) umfasst, die eine Schaltung zum Steuern/Regeln der Stromversorgung der Statorspule (12) bildet, wobei der Stator (10) und die Statorspule (12) mit einer Formmasse (14) mit Isoliereigenschaften bedeckt sind.
  9. Waschvorrichtung (2) mit einer Waschkammer, in der zu waschende Gegenstände aufgenommen und gewaschen werden, mit einem Wassertank (50) zum Speichern von Waschwasser (61), das zum Waschen verwendet wird, oder von Abwasser (62) nach dem Waschen, und mit einer Pumpe (1) gemäß einem der Ansprüche 1 bis 8, wobei die Einlassöffnung (21) der Pumpe mit dem Wassertank (50) verbunden ist.
EP04001620A 2004-01-26 2004-01-26 Kreiselpumpe für Waschmaschinen, Expired - Lifetime EP1557566B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE602004005297T DE602004005297T2 (de) 2004-01-26 2004-01-26 Kreiselpumpe für Waschmaschinen
EP04001620A EP1557566B1 (de) 2004-01-26 2004-01-26 Kreiselpumpe für Waschmaschinen,

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04001620A EP1557566B1 (de) 2004-01-26 2004-01-26 Kreiselpumpe für Waschmaschinen,

Publications (2)

Publication Number Publication Date
EP1557566A1 EP1557566A1 (de) 2005-07-27
EP1557566B1 true EP1557566B1 (de) 2007-03-14

Family

ID=34626516

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04001620A Expired - Lifetime EP1557566B1 (de) 2004-01-26 2004-01-26 Kreiselpumpe für Waschmaschinen,

Country Status (2)

Country Link
EP (1) EP1557566B1 (de)
DE (1) DE602004005297T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009023188B4 (de) 2009-05-29 2011-03-31 Baron von Grotthuß, Alexander Strömungsmaschine mit im Innern einer Hohlwelle angeordnetem Laufrad
EP2273123B9 (de) 2009-07-08 2018-03-21 Pierburg Pump Technology GmbH Sicherung eines Pumpenlaufrades
US8905728B2 (en) * 2011-12-30 2014-12-09 Peopleflo Manufacturing, Inc. Rotodynamic pump with permanent magnet coupling inside the impeller
DE102018107271A1 (de) * 2018-03-27 2019-10-02 Miele & Cie. Kg Wasserführendes Haushaltsgerät, insbesondere Geschirrspülmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1218569B (it) * 1987-04-22 1990-04-19 Askoll Srl Pompa centrifiga perfezionata per lavatrici, lavastoviglie ed elettrodomestici in genre
AUPO902797A0 (en) * 1997-09-05 1997-10-02 Cortronix Pty Ltd A rotary blood pump with hydrodynamically suspended impeller
EP0905379B1 (de) * 1997-09-25 2003-05-14 Levitronix LLC Zentrifugalpumpe und Zentrifugalpumpenanordnung
ITPN20010005A1 (it) * 2001-01-25 2002-07-25 Sole Spa Motopompa

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DE602004005297D1 (de) 2007-04-26
EP1557566A1 (de) 2005-07-27
DE602004005297T2 (de) 2007-12-20

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