EP1529960A1 - Magnetic drive pump - Google Patents

Magnetic drive pump Download PDF

Info

Publication number
EP1529960A1
EP1529960A1 EP04025541A EP04025541A EP1529960A1 EP 1529960 A1 EP1529960 A1 EP 1529960A1 EP 04025541 A EP04025541 A EP 04025541A EP 04025541 A EP04025541 A EP 04025541A EP 1529960 A1 EP1529960 A1 EP 1529960A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
drive
impeller
pump chamber
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Withdrawn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
EP04025541A
Other languages
German (de)
English (en)
French (fr)
Inventor
Seiya Intellectual Property Department Tanaka
Mikihisa Intellectual Property Department Suzuki
Makoto Kawauchi
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Publication of EP1529960A1 publication Critical patent/EP1529960A1/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F04D13/021—Units comprising pumps and their driving means containing a coupling
    • F04D13/024—Units comprising pumps and their driving means containing a coupling a magnetic coupling
    • F04D13/026—Details of the bearings

Definitions

  • This invention generally relates to magnetic drive pump. More particularly, the present invention pertains to the magnetic drive pump for rotating an impeller by means of magnetic force.
  • a water pump generally separates an outside (atmosphere) and a pump chamber by means of a mechanical seal. Although the mechanical seal causes considerable loss of driving force by friction. The friction loss is one of the sources of fuel consumption deterioration.
  • a magnetic drive water pump is disclosed (JP10-089069A2) wherein an impeller of the water pump is rotated without using mechanical seal.
  • rotational force from an engine is transmitted to the impeller using a magnetic joint including magnets which are disposed to face together.
  • a partition wall separating the pump chamber from the outside is placed between each magnet.
  • the friction loss is decreased, when a torque for driving the impeller exceeds a transmitted torque transmitted by the magnetic joint in high speed rotation of the engine, the rotation of the impeller may be stopped even if the engine is rotating (step out state).
  • capacity of the magnetic joint has to design higher (namely stronger magnets are used).
  • the capacity of the magnetic joints has to be higher.
  • a magnetic drive pump includes a pump chamber, an impeller rotatably supported in the pump chamber, and a drive mechanism for rotating the impeller, characterized in that the drive mechanism includes a magnetic member integrally attached to a drive member rotatably disposed at an outside of a partition wall for separating the pump chamber from the outside and an inductor member including a conductor material, integrally attached to the impeller, and rotated by a driving force corresponding to an induction current generated by rotation of the magnetic member.
  • the pump chamber is disposed at an engine block.
  • the drive member includes a drive magnet.
  • the inductor member and the drive member place opposite together through the partition wall.
  • the drive mechanism is disposed in a space formed in a body closing the pump chamber.
  • a seal member is provided between the body and the engine block.
  • the drive member of the drive mechanism is rotatably supported by a bearing member against the body and a pulley seat is attached to the drive member.
  • the induction member is connected to the impeller via a rotatable member.
  • the pump chamber and a space separated by the partition wall and accommodating therein the induction member and the rotatable member are communicating with each other.
  • the rotatable member is rotatably supported by a shaft which is fixed to the partition wall at one side and fixed to the engine block at the other side.
  • the drive mechanism since the drive mechanism includes the magnetic member integrally attached to the drive member rotatably disposed at the outside of the partition wall for separating the pump chamber from the outside and the inductor member including the conductor material, rotation is transmitted without contacting to the impeller side and friction loss may be decreased.
  • the inductor member since the inductor member is disposed in the pump chamber, the inductor member is efficiently cooled when the inductor member is heated.
  • Fig. 1 is a cross sectional view illustrating a water pump according to an embodiment of the present invention.
  • Fig. 2 is a schematic view illustrating an operation condition of a water pump according to an embodiment of the present invention.
  • a water pump (a magnetic drive pump) 100 is shown in FIG. 1 as an example.
  • the water pump 100 is attached to an engine block 110 (for example, a timing chain case may also be applicable as the attached side) by means of a fastening means (not shown).
  • the water pump (the magnetic drive pump) 100 mainly includes a body 2 including a pump chamber 8 by covering a concave portion 110a of the engine block 110, an impeller 11 rotatably supported in the pump chamber 8 for generating fluid flow (flow of cooling water) in the pump chamber 8 by rotation, and a drive mechanism 50 for rotating the impeller 11.
  • the body 2 is attached to the engine block 110 via an O-ring (for example, a gasket and the like may be applicable) 120 as a seal member using a fastening means (not shown) in liquid-tight condition.
  • a first shaft 3 is rotatably supported by the body 2 via a bearing (a bearing member) 1.
  • a pulley seat 130 is attached for transmitting rotational driving force from an engine.
  • a drive magnet (a drive member) 6 is attached.
  • the drive magnet 6 integrally includes a bracket 5 and permanent magnets (a magnetic member) 4 are attached to the bracket 5.
  • the drive magnet 6 is rotatably disposed between the body 2 and a partition wall 10.
  • the partition wall 10 is disposed at the pump chamber 8 side of the body 2 and separates the pump chamber 8 and an outside (an atmosphere).
  • the permanent magnets 4 are disposed so as to alternate N-pole and S-pole in periphery of the bracket 5.
  • the partition wall 10 is attached to the body 2 via an O-ring (for example, a gasket and the like may be applicable) 140 in liquid-tight condition.
  • An inductor member 7 is attached to an attaching member 7a and disposed so as to face to the drive magnet 6 through the partition wall 10.
  • the inductor member 7 includes a conductor material which is applicable to rotate by means of a driving force corresponding to an induction current generated by rotation of the permanent magnets 4.
  • the attaching member 7a attached to a one end of a rotatable member 14.
  • the impeller 11 is attached.
  • the rotatable member 14 is rotatably supported by a second shaft (a shaft) 13 provided in inside of the rotatable member 14 via submerged bearings 12 at both ends.
  • the second shaft 13 is fixed to the partition wall 10 at one end and fixed to the engine block 110 at the other end.
  • the drive mechanism 50 includes the permanent magnet 4 and the inductor member 7.
  • the permanent magnet 4 integrally attached to the first shaft 3 is rotated.
  • the induction current is generated in the induction member 7 facing the permanent magnet 4 through the partition wall 10.
  • the induction member 7 is rotated to the same direction with rotational direction of the permanent magnet 4 by means of the induction current of the induction member 7 and a magnetic flux of the permanent magnet 4. Since the induction member 7, the rotatable member 14 and the impeller 11 are integrally attached together, the impeller 11 is rotated with rotation of the rotatable member 14, fluid flow (flow of cooling water) is generated in the pump chamber 8.
  • step out stopping of rotation of the induction member 7 may not occur.
  • the permanent magnet 4 may not have excessive magnetic force, may be designed with smaller shape or weaker magnetic force.
  • an impeller rotational speed of the present embodiment shows as dotted line
  • flow rate of the cooling water may become relatively high for improving performance of a heating device of a vehicle room.
  • loss of driving force may be reduced by preventing excessive amount of water supply.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP04025541A 2003-11-04 2004-10-27 Magnetic drive pump Withdrawn EP1529960A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003374486 2003-11-04
JP2003374486A JP2005139917A (ja) 2003-11-04 2003-11-04 磁力駆動式ポンプ

Publications (1)

Publication Number Publication Date
EP1529960A1 true EP1529960A1 (en) 2005-05-11

Family

ID=34431258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04025541A Withdrawn EP1529960A1 (en) 2003-11-04 2004-10-27 Magnetic drive pump

Country Status (4)

Country Link
US (1) US20050095149A1 (zh)
EP (1) EP1529960A1 (zh)
JP (1) JP2005139917A (zh)
CN (1) CN2750078Y (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840380A2 (en) * 2006-03-30 2007-10-03 METELLI S.p.A. Improved magnetic drive pump
GB2467937A (en) * 2009-02-20 2010-08-25 Haldex Concentric Plc Pump magnetic coupling with heating function
DE102011006127A1 (de) * 2011-03-25 2012-09-27 Behr Gmbh & Co. Kg Kühlmittelpumpe eines Verbrennungsmotors

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7922464B2 (en) 2006-04-12 2011-04-12 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
JP5217204B2 (ja) * 2006-04-12 2013-06-19 アイシン精機株式会社 磁力駆動式ポンプ
JP4999157B2 (ja) * 2006-12-28 2012-08-15 アネスト岩田株式会社 磁気カップリングを介して駆動源に結合した流体機械
JP2009097412A (ja) 2007-10-16 2009-05-07 Aisin Seiki Co Ltd 磁力駆動式ポンプ
JP5299770B2 (ja) * 2009-02-20 2013-09-25 富士ゼロックス株式会社 駆動伝達装置
EP2710719B2 (en) * 2011-05-13 2020-04-29 Carrier Corporation Magnetic drive coupling apparatus
DE102014006568A1 (de) * 2013-05-08 2014-11-13 Ksb Aktiengesellschaft Pumpenanordnung und Verfahren zum Herstellen eines Spalttopfes der Pumpenanordnung
JP6507393B2 (ja) * 2014-12-22 2019-05-08 イーグル工業株式会社 すべり軸受及びポンプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1089069A (ja) * 1996-09-20 1998-04-07 Honda Motor Co Ltd 内燃機関における流体ポンプ構造
US20020056433A1 (en) * 2000-11-13 2002-05-16 Shin Nabeya Magnetic driving pump of vehicle internal combustion engine
US20020085933A1 (en) * 2000-12-22 2002-07-04 Masatoshi Fukamachi Magnetic force type pump driving apparatus in vehicular engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH591178A5 (zh) * 1972-11-03 1977-09-15 Anvar
US4645432A (en) * 1986-02-14 1987-02-24 General Motors Corporation Magnetic drive vehicle coolant pump
HU195598B (en) * 1986-04-22 1988-05-30 Ipari Mueszergyar Auxiliary rotor of permanent magnet for asynchronous motors
US6856941B2 (en) * 1998-07-20 2005-02-15 Minebea Co., Ltd. Impeller blade for axial flow fan having counter-rotating impellers
JP3403719B2 (ja) * 1999-08-10 2003-05-06 株式会社イワキ マグネットポンプ
US20020197175A1 (en) * 2001-06-20 2002-12-26 Ching-Hung Chu Radiator fan with a magnetic spindle
JP2003028086A (ja) * 2001-07-16 2003-01-29 Seikow Chemical Engineering & Machinery Ltd うず電流型マグネットポンプ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1089069A (ja) * 1996-09-20 1998-04-07 Honda Motor Co Ltd 内燃機関における流体ポンプ構造
US20020056433A1 (en) * 2000-11-13 2002-05-16 Shin Nabeya Magnetic driving pump of vehicle internal combustion engine
US20020085933A1 (en) * 2000-12-22 2002-07-04 Masatoshi Fukamachi Magnetic force type pump driving apparatus in vehicular engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 09 31 July 1998 (1998-07-31) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840380A2 (en) * 2006-03-30 2007-10-03 METELLI S.p.A. Improved magnetic drive pump
EP1840380A3 (en) * 2006-03-30 2008-02-20 METELLI S.p.A. Improved magnetic drive pump
GB2467937A (en) * 2009-02-20 2010-08-25 Haldex Concentric Plc Pump magnetic coupling with heating function
GB2467937B (en) * 2009-02-20 2015-03-25 Concentric Pumps Plc Pump with fluid heating function
DE102011006127A1 (de) * 2011-03-25 2012-09-27 Behr Gmbh & Co. Kg Kühlmittelpumpe eines Verbrennungsmotors

Also Published As

Publication number Publication date
US20050095149A1 (en) 2005-05-05
CN2750078Y (zh) 2006-01-04
JP2005139917A (ja) 2005-06-02

Similar Documents

Publication Publication Date Title
EP1529960A1 (en) Magnetic drive pump
JP4031858B2 (ja) 自動車用のポンプ、特に制御可能な冷媒ポンプ
JP4411201B2 (ja) 駆動モータ、特にポンプ用の駆動モータ
US6561141B2 (en) Water-cooled magnetorheological fluid controlled combination fan drive and water pump
JP5648241B2 (ja) 電気式ウォーターポンプ
US8079828B2 (en) Water pump
KR20150130551A (ko) 탠덤 전동 펌프
JP4665334B2 (ja) 電動式油圧ポンプ
US5989151A (en) Hybrid engine cooling system having electric motor with electro-magnetic clutch
US7922464B2 (en) Magnetic drive pump
US20060086585A1 (en) Device for transmitting the rotating movement to a driven shaft, in particular for fluid recirculating pumps
JP2004190853A (ja) マグネット式クラッチ装置
JP4062485B2 (ja) マグネット式ファンクラッチ装置
TW200307090A (en) Two-shaft vacuum pump
US6199518B1 (en) Cooling device of an engine
JPS6328258B2 (zh)
JP3923249B2 (ja) 車両用内燃機関の磁力駆動式ポンプ
JP2007068243A (ja) かご型回転子
JP4293418B2 (ja) マグネット式ファンクラッチ装置
JP3528993B2 (ja) 磁力駆動式ポンプ
JP2005048793A (ja) マグネット式ファンクラッチ装置
JPH10159874A (ja) 内燃機関におけるウォータポンプの可変駆動システム
JP4545516B2 (ja) ブラシレスモータ
JP2713203B2 (ja) 圧縮機の電磁クラッチ
JP4888801B2 (ja) 電磁クラッチ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL HR LT LV MK

17P Request for examination filed

Effective date: 20050712

AKX Designation fees paid

Designated state(s): CZ DE FR GB

17Q First examination report despatched

Effective date: 20070209

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20091019