CN1206789C - Axial controllable magnetic suspension permanent magnet disk type blood pump motor - Google Patents

Axial controllable magnetic suspension permanent magnet disk type blood pump motor Download PDF

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Publication number
CN1206789C
CN1206789C CNB021097704A CN02109770A CN1206789C CN 1206789 C CN1206789 C CN 1206789C CN B021097704 A CNB021097704 A CN B021097704A CN 02109770 A CN02109770 A CN 02109770A CN 1206789 C CN1206789 C CN 1206789C
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CN
China
Prior art keywords
permanent magnet
blood pump
disc type
axial
shaped permanent
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Expired - Fee Related
Application number
CNB021097704A
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Chinese (zh)
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CN1414687A (en
Inventor
王凤翔
王宝国
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Shenyang University of Technology
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Shenyang University of Technology
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Priority to CNB021097704A priority Critical patent/CN1206789C/en
Publication of CN1414687A publication Critical patent/CN1414687A/en
Application granted granted Critical
Publication of CN1206789C publication Critical patent/CN1206789C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The present invention relates to a motor for a blood pump of a permanent magnetic disc type with axial controllable magentic suspension, which is composed of a casing, a disc type stator, a permanent magnet disc type rotor, a passive permanent magnet bearing, a boold pump impeller and an axial controllable magnetic bearing, wherein the disc type stator is wound into a circular ring by an electrical silicon steel sheet; a stator winding placed along a radial slot on one end surface of the circular ring; the permanent magnet disc type rotor is arranged at one end of a nonmagnetic inductivity rotary shaft which is inserted into a barrel-shaped permanent magnet which is charged with magnetism and is fixed; the barrel-shaped permanent magnet and the rotary shaft are inserted into the other barrel-shaped permanent magnet which is fixed on the casing together; the other end of the shaft is connected with a blood pump impeller; an axial active magnetic bearing is arranged at the end of the motor corresponding to the outer part of the blood pump impeller. The present invention can realize suspension by using one degree of freedom of active control and can increase the efficiency of the whole blood pump motor.

Description

Axial controllable magnetic suspension permanent magnet disk type blood pump motor
Technical field
The invention belongs to a kind of blood pump motor, particularly a kind of axial controllable magnetic suspension permanent magnet disk type blood pump motor.
Background technology
Drive the rotary blood pump of blood flow in the artificial heart of biomedical engineering field, if blood pump adopts conventional motor, the frictional heating that its mechanical bearing produces makes the haemocyte breakage, causes haemolysis, blood coagulation and thrombus.Rotary blood pump must solve mechanical bearing wearing and tearing and frictional heat problem in the motor for this reason, and requires 10 years inner bearings non-maintaining.
The rotor of magnetic suspension blood pump motor has 6 degrees of freedom in the 3 D auto space, for allowing to realize stable magnetic suspension, need all will retrain on each degree of freedom.
If adopt magnetic suspension bearing motor or magnetic suspension bearing-free motor scheme, subject matter is that the system configuration size is huger.And magnetic suspension force needs complicated decoupling zero control.
The conventional magnetic levitation blood pump mostly adopts passive magnetic bearing and magnetic coupler to suspend and rotates.The effect of magnetic coupler is an impeller of the transmission of torque of motor being given blood pump, but because the air gap of magnetic coupler is bigger, and make transmission efficiency lower.Again because the suspension that passive magnetic bearing can not solve 6 degrees of freedom.The magnetic suspension blood pump motor often needs to use the mechanical fulcrum on the one degree of freedom to assist suspension.Blood pump motor can not be realized suspending completely as a result.
Summary of the invention
At the low problem that suspends fully of can not realizing of existing magnetic suspension blood pump motor efficient, the invention provides a kind of axial controllable magnetic suspension permanent magnet disk type blood pump motor.
The present invention adopts passive magnetic bearing and active magnetic bearings way of combining, the suspension that solves 6 degrees of freedom.Simultaneously, utilize the permanent-magnet disk structure to drive blood pump, can improve system effectiveness.
The present invention is made up of shell, disc type stator, permanent-magnet disk rotor, passive Permanent-magnet bearing, blood pump impeller and axial active magnetic bearings.The disc type stator is made of disc type iron core and stator winding, is wound into annulus by electrical steel sheet, radially slots at end face of annulus, to put into stator winding.The permanent-magnet disk rotor is made of the rotating shaft of fan-shaped permanent magnet, magnetic conduction disk and non-magnetic conduction, and symmetry is laid fan-shaped permanent magnet on the magnetic conduction disk, and rotating shaft penetrates in the cylinder-shaped permanent magnet that magnetizes, and is fixed.Cylinder-shaped permanent magnet and rotating shaft penetrate together has certain interval to be fixed in the cylinder-shaped permanent magnet on the inner walls with it.Blood pump impeller of other end mechanical attachment of axle, its core is a metal armature.The outside of corresponding impeller and armature is equipped with the axial active magnetic bearings that cylindrical core and coil constitute.An end and side at housing have fluid intake and outlet.
Operation principle of the present invention is by two axial charging cylinder-shaped permanent magnets, constitutes passive Permanent-magnet bearing in order to realize radial suspension.Closed-loop control by axial active magnetic bearings realization axial suspension power finally realizes the suspension fully of whole rotor.The torque of rotation comes from the effect of excitation of disc type stator and p-m rotor.
Advantage of the present invention is only utilized one degree of freedom control, just can realize suspending.Because suspending power control power demand is less, adopts high force-energy density disc-type permanent magnet motor simultaneously, thereby has improved the whole efficiency of blood pump.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1 disc type iron core, 2 stator winding, 3 fan-shaped permanent magnets, 4 magnetic conduction disks, 5 non-magnetic conduction rotating shafts, cylinder-shaped permanent magnet on 6 rotors, cylinder-shaped permanent magnet on 7 stators, 8 impellers and armature, 9 fluid intakes, 10 active magnetic bearings iron cores, 11 active magnetic bearings coils, 12 fluid issuings, 13 shells.
Embodiment
As shown in drawings: disc type stator of the present invention is made of disc type unshakable in one's determination 1 and stator winding 2, and disc type iron core 1 usefulness electrical steel sheet is wound into annulus, radially slots at end face of annulus, puts into stator winding 2.The permanent-magnet disk rotor is made of fan-shaped permanent magnet 3, magnetic conduction disk 4 and non-magnetic conduction rotating shaft 5, and rotating shaft 5 penetrates in the cylinder-shaped permanent magnet 7 and fixed.Cylinder-shaped permanent magnet 7 and rotating shaft 5 penetrate in the cylinder-shaped permanent magnet 6 that certain interval is arranged with it together, and cylinder-shaped permanent magnet 6 is fixed on the inner walls, and at blood pump impeller 8 of other end connection of axle 5, its core is the armature of active axial magnetic bearing.The axial active magnetic bearings that cylindrical core 10 and coil 11 constitute is equipped with in the outside of corresponding impeller 8 and armature.Have fluid intake 9 in the end of housing 13, have fluid issuing 12 in housing one side.

Claims (1)

1, a kind of axial controllable magnetic suspension permanent magnet disk type blood pump motor, it is characterized in that forming by shell, disc type stator, permanent-magnet disk rotor, passive Permanent-magnet bearing, blood pump impeller and axial active magnetic bearings, the disc type stator is made of disc type iron core and stator winding, be wound into annulus by electrical steel sheet, radially slot at end face of annulus, put into stator winding; The permanent-magnet disk rotor is made of fan-shaped permanent magnet, magnetic conduction disk and non-magnetic conduction rotating shaft, symmetry is laid fan-shaped permanent magnet on the magnetic conduction disk, rotating shaft penetrates in the cylinder-shaped permanent magnet that magnetizes, and fixed, cylinder-shaped permanent magnet and rotating shaft penetrate together has certain interval to be fixed in the cylinder-shaped permanent magnet on the inner walls with it, and two axial charging cylinder-shaped permanent magnets constitute passive Permanent-magnet bearing; Blood pump impeller of other end mechanical attachment of axle, its core is a metal armature, the axial active magnetic bearings that cylindrical core and coil constitute is equipped with in the outside of corresponding impeller and armature, has fluid intake and outlet in an end and the side of housing.
CNB021097704A 2002-05-31 2002-05-31 Axial controllable magnetic suspension permanent magnet disk type blood pump motor Expired - Fee Related CN1206789C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB021097704A CN1206789C (en) 2002-05-31 2002-05-31 Axial controllable magnetic suspension permanent magnet disk type blood pump motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB021097704A CN1206789C (en) 2002-05-31 2002-05-31 Axial controllable magnetic suspension permanent magnet disk type blood pump motor

Publications (2)

Publication Number Publication Date
CN1414687A CN1414687A (en) 2003-04-30
CN1206789C true CN1206789C (en) 2005-06-15

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CNB021097704A Expired - Fee Related CN1206789C (en) 2002-05-31 2002-05-31 Axial controllable magnetic suspension permanent magnet disk type blood pump motor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102704A (en) * 2011-01-10 2011-06-22 江苏大学 Construction method of five-degree-of-freedom alternating-current active magnetic bearing alpha-ordered invertible system decoupling controller

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028872A2 (en) * 2003-09-18 2005-03-31 Myrakelle, Llc Rotary blood pump
DE602004016188D1 (en) * 2003-10-03 2008-10-09 Foster Miller Inc ROTARY PUMP WITH ELECTROMAGNETIC LCR BEARING
CN100382855C (en) * 2005-02-02 2008-04-23 北京工业大学 Bearing free, engine free and axle free complete artificial heart pump
CN102247628B (en) * 2010-05-17 2013-05-22 北京天高智机技术开发公司 Implantable magnetic liquid suspension centrifugal blood pump
CN102151341A (en) * 2011-05-18 2011-08-17 济南磁能科技有限公司 Magnetic suspension artificial heart pump
CN103193142A (en) * 2013-03-28 2013-07-10 南京工业大学 Magnetic suspension bearing disc type elevator traction machine
CN103236759B (en) * 2013-04-22 2016-07-06 南京工业大学 Magnetic suspension bearing disc type precise air-conditioning fan
EP3157145A1 (en) * 2015-10-13 2017-04-19 Berlin Heart GmbH Rotor for a pump and pump and method for assembly
CN108404237A (en) * 2017-02-09 2018-08-17 王改峰 Impeller alternation rotary type suspension centrifugal blood pump
CN109019137A (en) * 2017-06-08 2018-12-18 江苏云瑞新型材料科技有限公司 A kind of liftable rotating-table apparatus for coiling
CN111561519B (en) * 2019-02-14 2021-06-25 苏州心擎医疗技术有限公司 Rigidity gain mechanism for magnetic suspension bearing, magnetic suspension bearing and blood pump
CN113131706B (en) * 2021-04-27 2022-04-29 山东大学 Disc type permanent magnet synchronous motor, energy storage flywheel and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102102704A (en) * 2011-01-10 2011-06-22 江苏大学 Construction method of five-degree-of-freedom alternating-current active magnetic bearing alpha-ordered invertible system decoupling controller
CN102102704B (en) * 2011-01-10 2013-01-23 江苏大学 Construction method of five-degree-of-freedom alternating-current active magnetic bearing alpha-ordered invertible system decoupling controller

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