US20050095149A1 - Magnetic drive pump - Google Patents

Magnetic drive pump Download PDF

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Publication number
US20050095149A1
US20050095149A1 US10/967,178 US96717804A US2005095149A1 US 20050095149 A1 US20050095149 A1 US 20050095149A1 US 96717804 A US96717804 A US 96717804A US 2005095149 A1 US2005095149 A1 US 2005095149A1
Authority
US
United States
Prior art keywords
drive
magnetic
impeller
pump chamber
magnetic drive
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.)
Abandoned
Application number
US10/967,178
Other languages
English (en)
Inventor
Seiya Tanaka
Mikihisa 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
Assigned to AISIN SEIKI KABUSHIKI KAISHA reassignment AISIN SEIKI KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KAWAUCHI, MAKOTO, SUZUKI, MIKIHISA, TANAKA, SEIYA
Publication of US20050095149A1 publication Critical patent/US20050095149A1/en
Abandoned 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
    • F04D13/021—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 9 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, wherein 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.
  • 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 110 a 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 at the other end of the first shaft 3 .
  • 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 7 a 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 7 a 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
  • 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 (shown as dotted line) becomes lower value than that of the known art (wherein an impeller is directly driven) in high speed region of an engine rotational speed. Then the impellor rotational speed reaches adequate value.
  • 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.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US10/967,178 2003-11-04 2004-10-19 Magnetic drive pump Abandoned US20050095149A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-374486 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
US20050095149A1 true US20050095149A1 (en) 2005-05-05

Family

ID=34431258

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/967,178 Abandoned US20050095149A1 (en) 2003-11-04 2004-10-19 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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070243085A1 (en) * 2006-04-12 2007-10-18 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
US20080159888A1 (en) * 2006-12-28 2008-07-03 Anest Iwata Corporation fluid machine connected to a drive source via a magnetic coupling
US20090097996A1 (en) * 2007-10-16 2009-04-16 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
US20140066214A1 (en) * 2011-05-13 2014-03-06 Carrier Corporation Magnetic drive coupling apparatus
US20160123328A1 (en) * 2013-05-08 2016-05-05 Ksb Aktiengesellschaft Pump Arrangement and Method for Producing a Containment Shell for the Pump Arrangement
US10519966B2 (en) 2014-12-22 2019-12-31 Eagle Industry Co., Ltd. Plain bearing and pump

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBS20060079A1 (it) * 2006-03-30 2007-09-30 Metelli S P A Pompa a trascinamento magnetico perfezionata
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
GB2467937B (en) * 2009-02-20 2015-03-25 Concentric Pumps Plc Pump with fluid heating function
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
DE102011006127A1 (de) * 2011-03-25 2012-09-27 Behr Gmbh & Co. Kg Kühlmittelpumpe eines Verbrennungsmotors

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904901A (en) * 1972-11-03 1975-09-09 Anvar Rotary electric machine with super-conducting winding
US4645432A (en) * 1986-02-14 1987-02-24 General Motors Corporation Magnetic drive vehicle coolant pump
US4745318A (en) * 1986-04-22 1988-05-17 Ipari Muszergyar Iklad Induction motor with secondary rotor
US6443710B1 (en) * 1999-08-10 2002-09-03 Iwaki Co., Ltd. Magnetic pump
US20020197175A1 (en) * 2001-06-20 2002-12-26 Ching-Hung Chu Radiator fan with a magnetic spindle
US20030194327A1 (en) * 1998-07-20 2003-10-16 Nmb (Usa), Inc. Impeller blade for axial flow fan having counter-rotating impellers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3942675B2 (ja) * 1996-09-20 2007-07-11 本田技研工業株式会社 内燃機関における流体ポンプ構造
JP3923249B2 (ja) * 2000-11-13 2007-05-30 本田技研工業株式会社 車両用内燃機関の磁力駆動式ポンプ
JP3913980B2 (ja) * 2000-12-22 2007-05-09 本田技研工業株式会社 車両用エンジンにおける磁力式ポンプ駆動装置
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904901A (en) * 1972-11-03 1975-09-09 Anvar Rotary electric machine with super-conducting winding
US4645432A (en) * 1986-02-14 1987-02-24 General Motors Corporation Magnetic drive vehicle coolant pump
US4745318A (en) * 1986-04-22 1988-05-17 Ipari Muszergyar Iklad Induction motor with secondary rotor
US20030194327A1 (en) * 1998-07-20 2003-10-16 Nmb (Usa), Inc. Impeller blade for axial flow fan having counter-rotating impellers
US6443710B1 (en) * 1999-08-10 2002-09-03 Iwaki Co., Ltd. Magnetic pump
US20020197175A1 (en) * 2001-06-20 2002-12-26 Ching-Hung Chu Radiator fan with a magnetic spindle

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070243085A1 (en) * 2006-04-12 2007-10-18 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
US7922464B2 (en) 2006-04-12 2011-04-12 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
US20080159888A1 (en) * 2006-12-28 2008-07-03 Anest Iwata Corporation fluid machine connected to a drive source via a magnetic coupling
US20090097996A1 (en) * 2007-10-16 2009-04-16 Aisin Seiki Kabushiki Kaisha Magnetic drive pump
US20140066214A1 (en) * 2011-05-13 2014-03-06 Carrier Corporation Magnetic drive coupling apparatus
US9178405B2 (en) * 2011-05-13 2015-11-03 Carrier Corporation Magnetic drive coupling apparatus
US20160123328A1 (en) * 2013-05-08 2016-05-05 Ksb Aktiengesellschaft Pump Arrangement and Method for Producing a Containment Shell for the Pump Arrangement
US10480514B2 (en) * 2013-05-08 2019-11-19 Ksb Aktiengesellschaft Pump arrangement and method for producing a containment shell for the pump arrangement
US10519966B2 (en) 2014-12-22 2019-12-31 Eagle Industry Co., Ltd. Plain bearing and pump

Also Published As

Publication number Publication date
EP1529960A1 (en) 2005-05-11
CN2750078Y (zh) 2006-01-04
JP2005139917A (ja) 2005-06-02

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AISIN SEIKI KABUSHIKI KAISHA, JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:TANAKA, SEIYA;SUZUKI, MIKIHISA;KAWAUCHI, MAKOTO;REEL/FRAME:015913/0028

Effective date: 20041007

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION