JP4767488B2 - 磁気浮上型ポンプ - Google Patents
磁気浮上型ポンプ Download PDFInfo
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- JP4767488B2 JP4767488B2 JP2003363607A JP2003363607A JP4767488B2 JP 4767488 B2 JP4767488 B2 JP 4767488B2 JP 2003363607 A JP2003363607 A JP 2003363607A JP 2003363607 A JP2003363607 A JP 2003363607A JP 4767488 B2 JP4767488 B2 JP 4767488B2
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- impeller
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 176
- 238000005339 levitation Methods 0.000 title claims description 49
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 152
- 239000003302 ferromagnetic material Substances 0.000 claims description 71
- 230000004907 flux Effects 0.000 claims description 6
- 239000008280 blood Substances 0.000 claims description 5
- 210000004369 blood Anatomy 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 description 10
- 239000000696 magnetic material Substances 0.000 description 7
- 230000004323 axial length Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000005415 magnetization Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
- F04D29/048—Bearings magnetic; electromagnetic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
- A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/419—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/80—Constructional details other than related to driving
- A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
- A61M60/818—Bearings
- A61M60/82—Magnetic bearings
-
- 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
- F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
- A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Mechanical Engineering (AREA)
- Cardiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
Description
磁気軸受用電磁石31と円板状インペラ23の両端面の一方の面(以下、アクチュエータ部方向インペラ端面という)に磁気軸受用電磁石31に対向して設けた電磁石対向軟質磁性部材26(第1の強磁性体)との吸引力および円板状インペラの両端面の他方の面すなわちケーシング部50方向のインペラ23の端面(以下、ケーシング部方向インペラ端面という)に設けたインペラ側強磁性体51(第2の強磁性体)とインペラ側強磁性体51(第2の強磁性体)に対向させてインペラ23をケーシング部50方向に吸引するケーシング側強磁性体52(第3の強磁性体)の吸引力および回転駆動手段で発生するインペラへの作用力(図1ではインペラ側永久磁石24とロータ側永久磁石14間の吸引力)およびその他のインペラに加わる外乱が釣り合うように磁気軸受用電磁石31に流れる電流を制御してインペラを磁気浮上させ、
インペラ側強磁性体51(第2の強磁性体)とケーシング側強磁性体52(第3の強磁性体)との対向面形状を異なるようにして磁気軸受用電磁石31の必要最大吸引力f2を小さくするようにして、磁気軸受用電磁石長さL5を短くした磁気浮上ポンプ1である。
アクチュエータ部方向インペラ端面に磁気軸受用電磁石31に対向して電磁石対向軟質磁性部材26(第1の強磁性体)を設け、
ケーシング部方向インペラ端面にインペラ側強磁性体51(第2の強磁性体)を設け、
インペラ側強磁性体51(第2の強磁性体)に対向させてインペラ23をケーシング部50方向に吸引するケーシング側強磁性体52(第3の強磁性体)を設け、
(1)「磁気軸受用電磁石31と電磁石対向軟質磁性部材26(第1の強磁性体)との吸引力」および(2)「インペラ側強磁性体51(第2の強磁性体)とケーシング側強磁性体52(第3の強磁性体)との吸引力」および(3)「回転駆動手段で発生するインペラ23への作用力(図1ではインペラ側永久磁石24とロータ側永久磁石14間の吸引力)」および(4)「インペラに加わる外乱」が釣り合うように磁気軸受用電磁石31に流れる電流を制御してインペラを磁気浮上させ、
インペラ側強磁性体51(第2の強磁性体)とケーシング側強磁性体52(第3の強磁性体)との対向面形状を異なるようにして磁気軸受用電磁石31の必要最大吸引力f2を小さく抑えて、磁気軸受用電磁石長さL5を短くした磁気浮上ポンプ1である。
10 モータ部
11 固定軸
12 ロータ
13 モータ
14 ロータ側永久磁石
15 モータロータ
16 モータステータ
17 モータ軸受
20 ポンプ部
21 ケーシング
22 ポンプ室
23 インペラ
23c 吸入口
24 インペラ側強磁性体
25 ロータ側非磁性部材
26 電磁石対向軟質磁性部材(第1の強磁性体)
27 電磁石・位置センサ対向軟質磁性部材
28 ケーシング側強磁性体
29 インペラ側強磁性体
30 磁気軸受部
31 磁気軸受用電磁石
33 モータ・インペラ間隔壁
34 位置センサ電磁石・インペラ間隔壁
35 電磁石・インペラ間隔壁
36 位置センサ・インペラ間隔壁
45 位置センサ対向軟質磁性部材
40 アクチュエータ部
46 非磁性部材
47 位置センサ
50 ケーシング部
51 インペラ側強磁性体(第2の強磁性体)
52 ケーシング側強磁性体(第3の強磁性体)
53 強磁性体(第4の強磁性体)
L1 従来技術1のポンプ長さ
L2 従来技術2のポンプ長さ
L4 従来技術の磁気軸受用電磁石長さ
L5 本発明の磁気軸受用電磁石長さ
Fc ケーシング部方向吸引力
Fm アクチュエータ部方向吸引力
Fr 電磁石吸引力
f1 図12の構造の必要最大吸引力
f2 図1の構造の必要最大吸引力。
Claims (11)
- 液体を送るための円板状のインペラを設けたポンプ部およびインペラの一方面に対向させ回転駆動力をインペラ部に伝達する回転駆動手段と磁気軸受用電磁石とを配置した磁気軸受部を備えた磁気浮上型ポンプであって、
円板状インペラの回転軸方向の両端面の一方の面に磁気軸受用電磁石に対向して電磁石対向軟質磁性部材を設け、
円板状インペラの回転軸方向の両端面の他方の面にインペラ側強磁性体を設け、
インペラ側強磁性体に対向させてインペラをケーシング部方向に吸引するケーシング側強磁性体を設け、
磁気軸受用電磁石と電磁石対向軟質磁性部材との吸引力およびインペラ側強磁性体とケーシング側強磁性体との吸引力および回転駆動手段で発生するインペラへの作用力およびインペラに加わる外乱が釣り合うように磁気軸受用電磁石に流れる電流を制御してインペラを磁気浮上させ、
インペラが回転軸方向において磁気軸受用電磁石から最も遠ざかった位置にあるときに、ケーシング側強磁性体に対向するインペラ側強磁性体の面の形状を示す第1の形状がインペラ側強磁性体に対向するケーシング側強磁性体の面の形状を示す第2の形状と同じ場合に比べてインペラをケーシング部方向に吸引する力を抑制するように、前記第1および第2の形状が互いに異なるように構成された磁気浮上型ポンプ。 - 請求項1に記載のインペラ側強磁性体またはケーシング側強磁性体がリング形状を有する磁気浮上型ポンプ。
- 請求項1または請求項2に記載のインペラ側強磁性体またはケーシング側強磁性体が周方向に配置される複数の強磁性体から形成される磁気浮上型ポンプ。
- 請求項1ないし請求項3に記載のインペラ側強磁性体の概略内接円の直径が、ケーシング側強磁性体の概略内接円の直径よりも大きくした磁気浮上型ポンプ。
- 請求項1ないし請求項3に記載のインペラ側強磁性体の概略内接円の直径が、ケーシング側強磁性体の概略内接円の直径よりも小さくした磁気浮上型ポンプ。
- 請求項1ないし請求項3に記載のインペラ側強磁性体の概略外接円の直径が、ケーシング側強磁性体の概略外接円の直径よりも大きくした磁気浮上型ポンプ。
- 請求項1ないし請求項3に記載のインペラ側強磁性体の概略外接円の直径が、ケーシング側強磁性体の概略外接円の直径よりも小さくした磁気浮上型ポンプ。
- 請求項1ないし請求項7に記載のインペラ側強磁性体を永久磁石とし、またはケーシング側強磁性体を永久磁石とした磁気浮上型ポンプ。
- 請求項1ないし請求項8に記載のケーシング側強磁性体に対し、インペラに対向しない側に強磁性体を配置して、ケーシング側強磁性体からのポンプ外部への漏れ磁束を抑制した磁気浮上型ポンプ。
- 請求項1ないし請求項9に記載のインペラ方向のロータの端面にロータ側永久磁石を配置するとともに、これに対向させてインペラの端面にインペラ側永久磁石を配置して磁気カップリングを形成し、ロータ側永久磁石を回転させてインペラを回転駆動する磁気浮上型ポンプ。
- 血液ポンプとして使用する請求項1ないし請求項10に記載の磁気浮上型ポンプ。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003363607A JP4767488B2 (ja) | 2003-10-23 | 2003-10-23 | 磁気浮上型ポンプ |
| AT04025066T ATE347654T1 (de) | 2003-10-23 | 2004-10-21 | Magnetisch aufgehängte pumpe mit magnetlagervorrichtungen |
| US10/968,931 US7467930B2 (en) | 2003-10-23 | 2004-10-21 | Magnetically levitated pump utilizing magnetic bearings |
| EP04025066A EP1526286B1 (en) | 2003-10-23 | 2004-10-21 | Magnetically levitated pump utilizing magnetic bearings |
| DE602004003540T DE602004003540T2 (de) | 2003-10-23 | 2004-10-21 | Magnetisch aufgehängte Pumpe mit Magnetlagervorrichtungen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003363607A JP4767488B2 (ja) | 2003-10-23 | 2003-10-23 | 磁気浮上型ポンプ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2005127222A JP2005127222A (ja) | 2005-05-19 |
| JP4767488B2 true JP4767488B2 (ja) | 2011-09-07 |
Family
ID=34386530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003363607A Expired - Fee Related JP4767488B2 (ja) | 2003-10-23 | 2003-10-23 | 磁気浮上型ポンプ |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7467930B2 (ja) |
| EP (1) | EP1526286B1 (ja) |
| JP (1) | JP4767488B2 (ja) |
| AT (1) | ATE347654T1 (ja) |
| DE (1) | DE602004003540T2 (ja) |
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| DE102005052559A1 (de) * | 2005-11-02 | 2007-05-10 | Behr Gmbh & Co. Kg | Regelbarer Antrieb für ein Kraftfahrzeug, insbesondere für eine Kühlmittelpumpe |
| US20070185369A1 (en) * | 2006-02-03 | 2007-08-09 | Mahmood Mirhoseini | Cardiac assist device and method |
| US8431648B2 (en) * | 2006-03-31 | 2013-04-30 | Milliken & Company | Coated substrates and polymer dispersions suitable for use in making the same |
| US8267636B2 (en) | 2007-05-08 | 2012-09-18 | Brooks Automation, Inc. | Substrate transport apparatus |
| WO2009003195A1 (en) | 2007-06-27 | 2008-12-31 | Brooks Automation, Inc. | Motor stator with lift capability and reduced cogging characteristics |
| US9752615B2 (en) | 2007-06-27 | 2017-09-05 | Brooks Automation, Inc. | Reduced-complexity self-bearing brushless DC motor |
| US8823294B2 (en) | 2007-06-27 | 2014-09-02 | Brooks Automation, Inc. | Commutation of an electromagnetic propulsion and guidance system |
| US7834618B2 (en) | 2007-06-27 | 2010-11-16 | Brooks Automation, Inc. | Position sensor system |
| US8129984B2 (en) | 2007-06-27 | 2012-03-06 | Brooks Automation, Inc. | Multiple dimension position sensor |
| US8283813B2 (en) | 2007-06-27 | 2012-10-09 | Brooks Automation, Inc. | Robot drive with magnetic spindle bearings |
| JP4994971B2 (ja) * | 2007-06-29 | 2012-08-08 | アネスト岩田株式会社 | 磁気軸受及び磁気カップリング装置並びにこれらを用いたスクロール型流体機械 |
| US8008884B2 (en) * | 2007-07-17 | 2011-08-30 | Brooks Automation, Inc. | Substrate processing apparatus with motors integral to chamber walls |
| US9044535B2 (en) * | 2007-08-07 | 2015-06-02 | Terumo Cardiovascular Systems Corp. | Extracorporeal blood pump with disposable pump head portion having magnetically levitated impeller |
| CZ2007534A3 (cs) * | 2007-08-10 | 2009-02-25 | Vysoké ucení technické v Brne | Bezucpávkové odstredivé cerpadlo s integrovaným diskovým motorem |
| JP5171953B2 (ja) | 2008-06-23 | 2013-03-27 | テルモ株式会社 | 血液ポンプ装置 |
| EP2372160B1 (en) | 2008-12-08 | 2014-07-30 | Thoratec Corporation | Centrifugal pump device |
| JP5378010B2 (ja) | 2009-03-05 | 2013-12-25 | ソラテック コーポレーション | 遠心式ポンプ装置 |
| US8770945B2 (en) | 2009-03-06 | 2014-07-08 | Thoratec Corporation | Centrifugal pump apparatus |
| JP5378012B2 (ja) * | 2009-03-06 | 2013-12-25 | ソラテック コーポレーション | 遠心式ポンプ装置 |
| JP5378060B2 (ja) * | 2009-05-08 | 2013-12-25 | ソラテック コーポレーション | 遠心式ポンプ装置 |
| JP5443197B2 (ja) | 2010-02-16 | 2014-03-19 | ソラテック コーポレーション | 遠心式ポンプ装置 |
| EP2554191B1 (en) | 2010-03-26 | 2019-05-08 | Thoratec Corporation | Centrifugal blood pump device |
| JP5681403B2 (ja) * | 2010-07-12 | 2015-03-11 | ソーラテック コーポレイション | 遠心式ポンプ装置 |
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-
2003
- 2003-10-23 JP JP2003363607A patent/JP4767488B2/ja not_active Expired - Fee Related
-
2004
- 2004-10-21 DE DE602004003540T patent/DE602004003540T2/de not_active Expired - Lifetime
- 2004-10-21 EP EP04025066A patent/EP1526286B1/en not_active Expired - Lifetime
- 2004-10-21 US US10/968,931 patent/US7467930B2/en active Active
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Also Published As
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|---|---|
| DE602004003540D1 (de) | 2007-01-18 |
| EP1526286B1 (en) | 2006-12-06 |
| DE602004003540T2 (de) | 2007-04-12 |
| ATE347654T1 (de) | 2006-12-15 |
| EP1526286A2 (en) | 2005-04-27 |
| US7467930B2 (en) | 2008-12-23 |
| JP2005127222A (ja) | 2005-05-19 |
| US20050089422A1 (en) | 2005-04-28 |
| EP1526286A3 (en) | 2005-05-18 |
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