EP1353074A2 - Pompe centrifuge avec filtre magnétique intégré - Google Patents

Pompe centrifuge avec filtre magnétique intégré Download PDF

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Publication number
EP1353074A2
EP1353074A2 EP03005993A EP03005993A EP1353074A2 EP 1353074 A2 EP1353074 A2 EP 1353074A2 EP 03005993 A EP03005993 A EP 03005993A EP 03005993 A EP03005993 A EP 03005993A EP 1353074 A2 EP1353074 A2 EP 1353074A2
Authority
EP
European Patent Office
Prior art keywords
pump
space
rotor
magnets
impeller
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Withdrawn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
EP03005993A
Other languages
German (de)
English (en)
Other versions
EP1353074A3 (fr
Inventor
Bernd-Thorsten Stock
Thomas Heese
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
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 filed Critical Wilo AG
Publication of EP1353074A2 publication Critical patent/EP1353074A2/fr
Publication of EP1353074A3 publication Critical patent/EP1353074A3/fr
Withdrawn legal-status Critical Current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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/708—Suction grids; Strainers; Dust separation; Cleaning specially for liquid pumps

Definitions

  • the present invention relates to a centrifugal pump with a pump housing, in which a pump impeller rotates in an impeller space, the Impeller space is surrounded by a spiral space.
  • Such pumps are generally known. You will be particularly interested in Heating systems used to promote the heating water, if necessary can also be provided with glycol additives.
  • the heating water is often included with ferromagnetic particles, for example with iron, nickel or cobalt particles contaminated, which arise in part from oxidation of the system components and which are distributed in the heating circuit.
  • Magnetic filters For filtering ferromagnetic abrasion or mixtures of ferromagnetic Particles and associated non-magnetic metallic, ceramic, textile or other solid particles Liquids are also known as magnetic filters.
  • a problem with such Magnetic filters lies in the fact that they are particularly useful of permanent magnets either not at all, or only under large ones Difficulty cleaning or backwashing or flushing without the To interrupt the filtering process. For this cleaning are always very complex Construction required.
  • a magnetic filter is known from DE 31 23 229 A1, in which the filter element must be washed if there is a large amount has pulled ferromagnetic particles out of the fluid.
  • a magnetic filter in which the Magnetic bodies are movably mounted for cleaning.
  • the Magnetic body moves along an envelope in an end position in which the magnetic body partly in the filter room and partly in a dirt chamber is located, on the enveloping body at least one surrounding locking device is arranged, which in the return movement of the magnetic body its initial position scrapes adhering particles from the magnetic body.
  • This device is also associated with a very complex design. So it is not only expensive to manufacture, but it is due to the Friction on the moving parts also prone to wear and thus to Dysfunction.
  • DE 31 46 858 describes a continuously operating magnetic filter in which an endless magnetic ring tube is provided, which is only too part of its circumference is in the liquid to be filtered and that is rotated over driving rollers, being in an upper area outside of the filtering liquid wipers are arranged on the magnetic ring tube wipe off adhering ferromagnetic particles.
  • This device is also structurally complex and associated with high costs. Because of the friction The wipers can also wear and thus malfunction come.
  • the object of the present invention is therefore to produce an inexpensive one and easy to handle pump of the type mentioned to create the in a structurally simple manner and with low flow resistance continuous filtering of ferromagnetic particles from the conveyed Liquid allows and easy cleaning of the filter takes place.
  • At least one magnet is integrated, which is arranged in an area is that directly or indirectly to the impeller space and / or to the spiral space and / or to one between the spiral space and the impeller space located annulus adjacent.
  • the main advantage is that the ferromagnetic particles in one Area of the pump housing can be collected in the relatively high Flow velocities of the delivered fluid prevail. That is why the forces transferred from the flow to the particles are particularly large here.
  • the force exerted by the flow on the dirt particles leads thus for flushing out the adhering particles from the pump.
  • There they can be collected in suitable filters if necessary can be made relatively coarse.
  • a pump with a Integrated magnetic filter created that is not only stable with a continuous Filtering can be operated, but also at the given Automatic cleaning or flushing of the magnetic filter he follows.
  • the filtering process is not interrupted during cleaning.
  • the centrifugal pump according to the invention is inexpensive with a simple construction to manufacture and easy to assemble and handle.
  • a magnet can be ring-shaped be trained and spread over the entire scope of the Extend pump housing. According to an alternative embodiment can also separate magnets in this area of the Pump housing may be arranged.
  • Pump designed as a canned pump or can pump, with a Pump driving electric motor is provided, which with the pump impeller rotatably connected rotor rotates as a wet rotor in a wet room, the via at least one connecting channel with the impeller chamber and / or with the spiral space and / or with the annular space of the pump housing connected and in contact with the conveyed medium, the stator the engine through a can or a can from the wet room and the conveyed medium is separated.
  • the magnet (s) advantageously either directly in the area or preferably immediately arranged next to the area in which the connecting channel or Connection channels in the impeller space or in the spiral space and / or in the Open the annulus of the pump housing.
  • Such pumps are often used in heating systems in particular Wet rotor design used.
  • new types of electric motors often used permanent magnetic materials, which due to the Construction of the pump to be flushed by the fluid. This could ferromagnetic particles in the medium are critical to them accumulate significant places and sustained destruction by abrasion of the pump motor or cause the motor to become blocked. That is why it is particularly important with this type of construction, the engine compartment or wet room with its sensitive permanent magnets against Contamination from the pumped medium and, if necessary, from it to protect contained impurities.
  • the solution according to the invention can provide effective protection for the Engine compartment can be achieved by the appropriate arrangement of magnets.
  • the Magnets are in the vicinity of the spiral space or the annular space Pump attached so that they accumulate the ferromagnetic dirt particles, before they can get into the engine compartment. Damage the pump or a destruction of the motor by such dirt particles can therefore be prevented effectively.
  • the connecting channel is through a Sealing gap or through a labyrinth seal with several sealing gaps is formed.
  • the engine compartment is also against a high Liquid exchange to the pump room protected.
  • the magnet or magnets in a distance radially outside the mouth of the sealing gap at the spiral space and / or is or are arranged on the annular space. Because of the prevailing here high flow velocities are due to the dirt particles transferred forces so large that after a short time at a relative low accumulation of dirt particles, cleaning with the The dirt particles are flushed out of the pressure port of the pump.
  • the magnet or magnets is preferably arranged in an area in which enough space to collect a certain amount of ferromagnetic Particle is present. In this way, the invention Device also with a pump with a lower speed and thus with lower flow forces are used.
  • the rotor is axially in at least one direction by means of a Magnetic bearing is mounted, on the rotor or on a fixed to the Rotor connected part rotating magnets and on the pump housing or on a part firmly connected to the pump housing interacting fixed magnets are arranged and wherein the fixed magnets either directly in the area or preferably is / are located directly next to the area in which the connecting channel or the connecting channels in the impeller space and / or in the Open spiral space and / or in the annulus of the pump housing.
  • the advantages of the invention can thus be obtained in a particularly advantageous manner
  • Device with the advantages of magnetic storage of the Rotors namely the advantages of a particularly quiet and very low-friction Rotor run and thus a particularly high efficiency of the pump, can be connected without additional magnetic components required are.
  • the pump can therefore be particularly small and be carried out inexpensively.
  • the rotor is outside the stator revolves, the revolving magnets in the outer peripheral region of the Rotors are arranged.
  • the rotor rotates within the stator, whereby at least one carrier element firmly connected to the rotor, in particular a disc is provided on which the rotating magnets, in particular are arranged in the outer peripheral region. In both cases they are Magnets in the area of particularly high flow velocities and thus especially large cleaning staff to tear away the dirt particles arranged.
  • the magnets especially the rotating magnets and the fixed Magnets can be formed by permanent magnets.
  • the fixed magnets Form electromagnets so as to control the axial position of the rotor or to be able to regulate.
  • the magnet or magnets is replaced by a Wall of the pump housing from the impeller chamber and / or from the Spiral space and / or is or are separated from the annulus, which is a relative has a small thickness.
  • a thickness between 0.3 and 5 mm, in particular proposed by 1 mm.
  • the pump housing at least in the area of the magnet or in the area of the magnets, but preferably made entirely of a non-magnetic or non-magnetizable material is executed.
  • the pumps 1 shown in the figures are of the wet rotor type executed, the electric motor 2 driving the pump 1 having a rotor 3 has, which rotates as a wet runner in a wet room 4 in the medium being pumped.
  • the wet room 4 is through a can 5 ( Figure 3) or other suitable Sealant 6 ( Figure 1) separated from the drying room 7, in which the Stator 8 of the electric motor 2 is located.
  • the pump 1 has a pressure port 10 and a on the pump housing 9 Intake 11 is located in the impeller chamber 12 of the pump housing 9 Pump impeller 13 that rotates with the motor shaft 14 of the electric motor 2 connected is.
  • the impeller chamber 12 is surrounded radially on the outside by a spiral space 15 which increases in size over the circumference of the impeller chamber 12 and in the Pressure port 10 opens. Between the impeller space 12 and the spiral space 15 is an annular space 16, which the transition from the impeller space 12 in forms the spiral space 15.
  • An annular connecting channel 17 connects the annular space 16 with the Wet room 4.
  • Connection channel 17 also a labyrinth seal with two sealing gaps 18th The pumped liquid is in contact with the connection channel 17 the rotor 3 rotating in the wet area 4.
  • a plurality of magnets 19 are arranged in the pump housing 9, which are located in an area 20 which is indirect over the thin Housing wall 21 adjacent to the annular space 16 and the spiral space 15.
  • a single magnet 19 is already sufficient, a particularly good one can Filter effect can be achieved in that a plurality of magnets 19 over the Circumference of the annular space or the spiral space are arranged distributed.
  • a continuous, ring-shaped magnet 19 can be used.
  • the magnet 19 is located a short distance radially outside the Mouth of the connecting channel 17 in the annular space 16. Thus is radial enough space inside and outside around area 20 for Available, in which the ferromagnetic particles to be filtered out can accumulate. As soon as there is a certain number of dirt particles has accumulated, especially from the smallest iron, nickel or Cobalt particles can be formed, they are gravitational pumped liquid carried away and with the flow through the spiral space 15 in the pressure port 10 and thus flushed out of the pump 1.
  • the magnets 19 also form one at the same time Part of a magnetic axial bearing of the rotor 3 Rotor 3 in the embodiment of Figure 1 on its outer peripheral region also magnets 22, which are opposite the magnets 19 and repel them.
  • This magnetic bearing 19, 22 supports the rotor 3 with the impeller 13 thus in Figures 1 and 2 against displacement to the left to the pump housing 9.
  • the rotor 3 also magnetically or by other bearing means, especially by axial Plain bearings must be stored. It is also possible to float the rotor 3 store, where between the magnetic forces of the magnetic bearing 19, 22 and the hydraulic forces balance forces.
  • the motor housing 24 advantageously a slide washer, which the opposite the end of the motor shaft 14 facing away from the pump housing. In the radial direction, the motor shaft 14 is also in plain bearings 23 stored.
  • the rotor 3 runs radially outside the stator 8 um.
  • the magnets 22 can be relative large diameter, which corresponds to the diameter, on which the magnets 19 are arranged in the pump housing 9.
  • a Large diameter is an advantage because it is located radially further out Area where the liquid is flowing at a higher speed and thus larger flushing forces on the accumulated ferromagnetic Dirt particles are exerted.
  • the rotor 3 runs radially inside the stator 8 um.
  • a disk 26 can be reached on the suction nozzle 11 facing away from the rear of the pump impeller 13 on the motor shaft 14 attached.
  • Which form part of the magnetic axial bearing Magnets 22 are located here in the outer peripheral region of this disk 26 and are therefore located in the magnet 19 arranged in the pump housing 9 across from.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP03005993A 2002-04-12 2003-03-18 Pompe centrifuge avec filtre magnétique intégré Withdrawn EP1353074A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10216402 2002-04-12
DE2002116402 DE10216402A1 (de) 2002-04-12 2002-04-12 Kreiselpumpe mit integriertem Magnetfilter

Publications (2)

Publication Number Publication Date
EP1353074A2 true EP1353074A2 (fr) 2003-10-15
EP1353074A3 EP1353074A3 (fr) 2004-11-03

Family

ID=28051301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03005993A Withdrawn EP1353074A3 (fr) 2002-04-12 2003-03-18 Pompe centrifuge avec filtre magnétique intégré

Country Status (2)

Country Link
EP (1) EP1353074A3 (fr)
DE (1) DE10216402A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2462685A (en) * 2008-08-22 2010-02-24 Christopher Adey Pump arrangement with a centrifugal pump and magnetic separator
CN104329286A (zh) * 2014-12-01 2015-02-04 江苏奔腾汽车科技有限公司 一种磁力传动泵体密封结构
DE102015200882A1 (de) 2014-01-24 2015-07-30 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Eine Art Magnetfilter und eine Art Verschlussmechanismus für Filter
EP2735744A3 (fr) * 2012-11-23 2017-08-16 Wilo Ag Roue mobile d'une pompe centrifuge à aimants
EP4056851A1 (fr) * 2021-03-09 2022-09-14 Metso Outotec Sweden AB Élément d'usure pour une pompe à boue
EP4243955A4 (fr) * 2020-11-13 2024-04-17 Taco Inc Ensemble rotatif avec filtre magnétique d'une seule pièce pour pompe de circulation à rotor humide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009025738A1 (de) * 2009-06-20 2010-12-23 Schaeffler Technologies Gmbh & Co. Kg Kühlkreislauf einer Brennkraftmaschine mit Abscheidevorrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4880362A (en) * 1988-05-24 1989-11-14 Laing Karsten A Rotor with stabilizing magnets
WO1998011650A1 (fr) * 1996-09-10 1998-03-19 Sulzer Electronics Ag Pompe rotative et procede permettant de la faire fonctionner

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1490440A (fr) * 1966-08-29 1967-07-28 Glutz Blotzheim Nachfolger A G Pompe de circulation
US3572976A (en) * 1967-10-09 1971-03-30 Nikkiso Co Ltd Fluid takeoff device for canned motor driven pump
DE3015211C2 (de) * 1980-04-19 1986-05-28 Klein, Schanzlin & Becker Ag, 6710 Frankenthal Schutzeinrichtung für Unterwassermotoren
JPS5710311A (en) * 1980-06-18 1982-01-19 Daido Steel Co Ltd Magnetic separator
DE3134861C2 (de) * 1981-09-03 1985-04-04 Siegfried 4054 Nettetal André Magnetfilter
DE3146858C2 (de) * 1981-11-26 1983-10-06 Walzbau-Montagegesellschaft Bilabel Gmbh & Co Kg, 6100 Darmstadt Kontinuierlicher Magnetfilter zur Abscheidung erfaßbarer Stoffe aus Flüssigkeiten
DE3701562C2 (de) * 1986-03-12 1996-02-08 Wilo Gmbh Kreiselpumpe mit Spaltrohrmotor
FR2722842B1 (fr) * 1994-06-29 1996-08-30 Safog Pompes centrifuges imposant des champs electromagnetiques aux fluides pulses
FR2768470B1 (fr) * 1997-09-12 2002-02-01 Mecanique Magnetique Sa Pompe rotative a rotor immerge
DE19939522A1 (de) * 1999-08-20 2001-02-22 Wilo Gmbh Elektromotorisch angetriebene Kreiselpumpe mit außenliegendem Rotor
DE10059457A1 (de) * 2000-11-30 2002-07-11 Grundfos As Elektromotor zum Antrieb einer Kreiselpumpe für insbesondere Heizungsanlagen
DE10059458A1 (de) * 2000-11-30 2002-06-13 Grundfos As Elektrischer Antriebsmotor für eine Kreiselpumpe für insbesondere Heizungsanlagen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4880362A (en) * 1988-05-24 1989-11-14 Laing Karsten A Rotor with stabilizing magnets
WO1998011650A1 (fr) * 1996-09-10 1998-03-19 Sulzer Electronics Ag Pompe rotative et procede permettant de la faire fonctionner

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2462685A (en) * 2008-08-22 2010-02-24 Christopher Adey Pump arrangement with a centrifugal pump and magnetic separator
WO2010020793A1 (fr) * 2008-08-22 2010-02-25 Christopher Adey Agencement de pompe
EP2735744A3 (fr) * 2012-11-23 2017-08-16 Wilo Ag Roue mobile d'une pompe centrifuge à aimants
DE102015200882A1 (de) 2014-01-24 2015-07-30 Bosch Termoteknik Isitma ve Klima Sanayi Ticaret Anonim Sirketi Eine Art Magnetfilter und eine Art Verschlussmechanismus für Filter
CN104329286A (zh) * 2014-12-01 2015-02-04 江苏奔腾汽车科技有限公司 一种磁力传动泵体密封结构
EP4243955A4 (fr) * 2020-11-13 2024-04-17 Taco Inc Ensemble rotatif avec filtre magnétique d'une seule pièce pour pompe de circulation à rotor humide
EP4056851A1 (fr) * 2021-03-09 2022-09-14 Metso Outotec Sweden AB Élément d'usure pour une pompe à boue
WO2022189395A1 (fr) * 2021-03-09 2022-09-15 Metso Outotec Sweden Ab Élément d'usure pour pompe à boues

Also Published As

Publication number Publication date
EP1353074A3 (fr) 2004-11-03
DE10216402A1 (de) 2003-10-23

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