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 PDFInfo
- 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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- Prior art keywords
- permanent magnet
- blood pump
- disc type
- axial
- shaped permanent
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- Expired - Fee Related
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- 239000008280 blood Substances 0.000 title claims abstract description 26
- 210000004369 blood Anatomy 0.000 title claims abstract description 26
- 239000000725 suspension Substances 0.000 title claims abstract description 20
- 238000004804 winding Methods 0.000 claims abstract description 8
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 206010018910 Haemolysis Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008588 hemolysis Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
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- External Artificial Organs (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
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
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.
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 |
Family
ID=4740790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021097704A Expired - Fee Related CN1206789C (en) | 2002-05-31 | 2002-05-31 | Axial controllable magnetic suspension permanent magnet disk type blood pump motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1206789C (en) |
Cited By (1)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005028872A2 (en) * | 2003-09-18 | 2005-03-31 | Myrakelle, Llc | Rotary blood pump |
| WO2005034312A2 (en) * | 2003-10-02 | 2005-04-14 | Foster-Miller, Inc. | Rotary pump with electromagnetic lcr bearing |
| CN100382855C (en) * | 2005-02-02 | 2008-04-23 | 北京工业大学 | Fully Artificial Heart Blood Pump Without Bearings, Motors, and Shafts |
| 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 |
-
2002
- 2002-05-31 CN CNB021097704A patent/CN1206789C/en not_active Expired - Fee Related
Cited By (2)
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1414687A (en) | 2003-04-30 |
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