CN209048761U - Pump installation - Google Patents
Pump installation Download PDFInfo
- Publication number
- CN209048761U CN209048761U CN201820708348.XU CN201820708348U CN209048761U CN 209048761 U CN209048761 U CN 209048761U CN 201820708348 U CN201820708348 U CN 201820708348U CN 209048761 U CN209048761 U CN 209048761U
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- China
- Prior art keywords
- rotor
- helicla flute
- pump installation
- magnetic part
- hydrodynamic
- 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.)
- Ceased
Links
- 238000009434 installation Methods 0.000 title claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 9
- 238000007667 floating Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 6
- 239000008280 blood Substances 0.000 claims description 5
- 210000004369 blood Anatomy 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- External Artificial Organs (AREA)
Abstract
The utility model relates to bio-medical technology fields, and in particular to a kind of pump installation that can be applied to for example external ventricle circulatory assit system, comprising: enclosure of pump head, enclosure of pump head have cavity, fluid inlet and fluid outlet；Rotor, rotor are set in cavity, and rotor can suspend and rotate, and are guided the fluid entered in cavity from fluid inlet to fluid outlet using the centrifugal force that rotation generates；Rotor is equipped with the first magnetic part；Drive system, drive system is for driving rotor suspension and rotation, and drive system further includes the second magnetic part, and the second magnetic part attracts each other with the first magnetic part；Rotor includes rotor pedestal and blade, is formed with hydrodynamic configuration on rotor pedestal；Hydrodynamic configuration includes dynamic pressure groove and helix；Dynamic pressure groove is helicla flute；Helicla flute is in convergence shape along the radial direction of rotor, and closer to the radial center of rotor, the width of helicla flute is narrower；The depth of helicla flute gradually becomes shallower as along the radial direction of rotor, and closer to the radial center of rotor, the depth of helicla flute is more shallow.
Description
Technical field
The present invention relates to bio-medical technology fields, and in particular to one kind can be applied to for example external ventricle circulatory assit
The pump installation of system.
Background technique
The Chinese patent literature of Publication No. CN105833368A discloses a kind of blood pump centrifugal impeller, as shown in Figure 1,
It is axially and radially being respectively provided with hydrodynamic configuration, cooperation magnetic levitation makes centrifugal impeller after deviateing equilbrium position, can be rapidly
It is returned to equilbrium position.Wherein, axial hydrodynamic structure includes arc dynamic pressure conduit and relief, and radial dynamic pressure structure includes single line
Helical form or multi-thread spiral helicine dynamic pressure groove.
It is found through experiment that above-mentioned hydrodynamic configuration, especially axial arc dynamic pressure channel structure, the institute under impeller rotational case
The Hydrodynamic suspension that can be provided is limited, and the liquid film stiffness in dynamic pressure face is unstable, and the balance for not being well positioned to meet impeller rotation is wanted
It asks.
Summary of the invention
In view of this, providing a kind of more stable Hydrodynamic suspension structure, energy the purpose of the present invention is improving the prior art
The balance requirement of enough further satisfaction rotor rotations.
Specifically, above-mentioned purpose of the invention is achieved through the following technical solutions:
A kind of pump installation, comprising:
Enclosure of pump head, the enclosure of pump head have cavity, fluid inlet and fluid outlet；
Rotor, the rotor are set in the cavity, and the rotor can suspend and rotate, the centrifugation generated using rotation
Power guides the fluid entered in the cavity from the fluid inlet to the fluid outlet；
The rotor is equipped with the first magnetic part；
Drive system, for the drive system for driving the rotor suspension and rotation, the drive system further includes the
Two magnetic parts, second magnetic part attract each other with first magnetic part；
The rotor includes rotor pedestal and blade, is formed with hydrodynamic configuration on the rotor pedestal, when the rotor revolves
When turning, the hydrodynamic configuration generates hydrodynamic floating power, the hydrodynamic floating power, second magnetic part and first magnetism
The power collective effect that component attracts each other, makes the rotor maintain equilbrium position；
The hydrodynamic configuration includes dynamic pressure groove and helix；
It is characterized in that, the dynamic pressure groove is helicla flute；
The helicla flute is in convergence shape along the radial direction of the rotor, and closer to the radial center of the rotor, the spiral shell
The width of spin slot is narrower；
The depth of the helicla flute gradually becomes shallower as along the radial direction of the rotor, and closer to the radial center of the rotor,
The depth of the helicla flute is more shallow.
As a further improvement, the helicla flute is double spiral groove.Preferably, the rotation direction phase of the double spiral groove
Instead.
As a further improvement, the helicla flute is combined and is formed by single major trough and several branch's slots.Preferably, described
Helicla flute is in approximate Y shape.
As a further improvement, the helicla flute is two-way spiral groove, and the two-way spiral groove is by several transport screws
Slot and several reverse acting spiral slots combine to be formed.Preferably, the two-way spiral groove is in approximate V-arrangement.
Preferably, at least a part of hydrodynamic configuration is not formed on the rotor, and it is formed in outside the pump head
The inner wall of shell.Preferably, all the hydrodynamic configuration is not formed on the rotor, and is formed in the interior of the enclosure of pump head
Wall.
Preferably, the fluid is blood.
Compared to the prior art, the invention has the following beneficial effects:
(1) unit is generated as dynamic pressure using helicla flute, the anti-interference ability and liquid film stiffness of hydrodynamic floating have direct pass
System, liquid film stiffness is bigger, and anti-interference ability is stronger, and hydrodynamic floating is more stable.Under rotor rotational case, helicla flute is compared to circle
Arc slot has higher liquid film stiffness, it is thus possible to provide more stable Hydrodynamic suspension effect;
(2) on this basis, higher liquid film stiffness and bearing capacity are further obtained using double spiral groove；Also, it is
The stability for guaranteeing Hydrodynamic suspension, preferably makes the oppositely oriented of double spiral groove;
(3) on this basis, combined helical slot is further used, i.e. helicla flute is combined by single major trough and several branch's slots
It is formed, generates higher liquid film stiffness using the guide functions of branch's slot, improve the condensate film stability in dynamic pressure face；Also, for
The considerations of processability, preferably makes branch's slot two, i.e. helicla flute is in approximate Y shape;
(4) on this basis, two-way spiral groove is further used, the case where to adapt to rotor possible reverse rotation；And
And equally for processability the considerations of, preferably make two-way spiral groove be designed as single helicla flute doing mirror symmetry, i.e. spiral
Slot is in approximate V-arrangement;
(5) in order to improve the rigidity of rotor itself, at least a part of hydrodynamic configuration is made to be not formed at the rotor
On, and it is formed in the inner wall of the enclosure of pump head；Also, for the purpose for keeping the processability of rotor optimal, preferably make whole
The hydrodynamic configuration is not formed on the rotor, and is formed in the inner wall of the enclosure of pump head.
Detailed description of the invention
Fig. 1 is the hydrodynamic configuration schematic diagram of prior art pump installation；
Fig. 2 is the overall structure diagram of pump installation of the present invention；
Fig. 3 is the rotor structure schematic diagram of pump installation of the present invention；
Fig. 4 is the basic hydrodynamic configuration schematic diagram of pump installation of the present invention；
Fig. 5 is the first improvement schematic diagram of the basic hydrodynamic configuration of pump installation of the present invention；
Fig. 6 is second of improvement schematic diagram of the basic hydrodynamic configuration of pump installation of the present invention；
Fig. 7 is the third improvement schematic diagram of the basic hydrodynamic configuration of pump installation of the present invention.
Description of symbols: 1, helicla flute；2, protrusion；4, prior art axial hydrodynamic structure；5, the prior art is radially dynamic
Laminated structure；A, enclosure of pump head；B, rotor；B1, rotor pedestal；B2, blade；C, hydrodynamic configuration of the present invention；C1, the present invention radially move
Laminated structure；C2, axial hydrodynamic structure of the present invention；1-1, the positive slot of double spiral groove；1-2, the opposing slot of double spiral groove；1-
3, major trough；1-4, branch's slot；1-5, the positive slot of two-way spiral groove；1-6, the opposing slot of two-way spiral groove.
Specific embodiment
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail:
As shown in Figure 2,3, a kind of pump installation of the invention, comprising:
Enclosure of pump head A, with cavity, fluid inlet and fluid outlet；
Rotor B is set in cavity, and rotor B can be suspendd and rotate, and will be entered from fluid using the centrifugal force that rotation generates
The fluid that mouth enters in cavity is guided to fluid outlet；Rotor B is equipped with the first magnetic part；
Drive system (not shown) is used to that rotor B to be driven to suspend and rotate, and drive system further includes the second magnetic portion
Part, the second magnetic part attract each other with the first magnetic part；
It should be noted that the first magnetic part of rotor B, and drive system and its second magnetic part, herein not
It is particularly limited, being typically designed for fields, such as hot-wire coil and/or permanent magnetism with control loop can be used
Iron etc..
Rotor B includes rotor pedestal B1 and blade B2, and hydrodynamic configuration C is formed on rotor pedestal B1, when rotor B rotates
When, hydrodynamic configuration C generates hydrodynamic floating power, the power that hydrodynamic floating power, the second magnetic part and the first magnetic part attract each other
Collective effect makes rotor B maintain equilbrium position；
Hydrodynamic configuration C includes dynamic pressure groove C1 and helix C2.
As a Basic Design of the invention, as shown in figure 4, dynamic pressure groove C1 is helicla flute 1；Helicla flute 1 is along rotor B's
Radial is in convergence shape, and closer to the radial center of rotor B, the width of helicla flute 1 is narrower；The depth of helicla flute 1 is along rotor B's
Radial direction gradually becomes shallower as, and closer to the radial center of rotor B, the depth of helicla flute 1 is more shallow.It is generated using helicla flute as dynamic pressure
Unit is because the anti-interference ability and liquid film stiffness of are as follows: hydrodynamic floating have direct relation, and liquid film stiffness is bigger, anti-interference ability
Stronger, hydrodynamic floating is more stable.Under rotor rotational case, helicla flute has higher liquid film stiffness compared to arc groove, because
This is capable of providing more stable Hydrodynamic suspension effect.
Further, as the first improvement to Basic Design of the present invention, as shown in figure 5, helicla flute 1 is by positive slot
The double spiral groove of 1-1 and opposing slot 1-2 composition, can obtain higher liquid film stiffness and bearing capacity, and guarantee fluid power in this way
The stability of suspension.
Further, as second of improvement to Basic Design of the present invention, as shown in fig. 6, helicla flute 1 is by single major trough
1-3 and several branch's slot 1-4 combine to be formed, and generate higher liquid film stiffness using the guide functions of branch's slot, improve dynamic pressure face
Condensate film stability；Also, the considerations of for processability, preferably makes branch's slot two, i.e. helicla flute is in approximate Y shape.
Further, as the third improvement to Basic Design of the present invention, as shown in fig. 7, helicla flute 1 is by positive slot
The case where two-way spiral groove of 1-5 and opposing slot 1-6 composition, what this was especially coped with is rotor B possible reverse rotation.Some
In the case of, rotor B, which has, rotates in the forward direction and reversely rotates two states, is rinsed for example, by using counter fluid.Also, it is same
Two-way spiral groove is preferably designed as making mirror symmetry by single helicla flute, to make helicla flute by the considerations of for processability
In approximate V-arrangement.
Preferably, making at least a part of hydrodynamic configuration C be not formed at rotor B to improve the rigidity of rotor B itself
On, and it is formed in the inner wall of enclosure of pump head A；Also, for the purpose for keeping the processability of rotor B optimal, preferably make all dynamic
Laminated structure C is not formed on rotor B, and is formed in the inner wall of enclosure of pump head A.
Preferably, fluid is blood, pump installation is the blood pump device applied to for example external ventricle circulatory assit system.
It should be understood that above-mentioned specific embodiment of the invention is only as citing, that is, spiritual not office of the invention
It is limited to content described in above-mentioned specific embodiment, and should be comprising all possible etc. based on above-mentioned specific embodiment
Effect transformation.
Claims (10)
1. a kind of pump installation, comprising:
Enclosure of pump head, the enclosure of pump head have cavity, fluid inlet and fluid outlet；
Rotor, the rotor are set in the cavity, and the rotor can suspend and rotate, will using the centrifugal force that rotation generates
The fluid entered in the cavity from the fluid inlet is guided to the fluid outlet；
The rotor is equipped with the first magnetic part；
Drive system, for the drive system for driving the rotor suspension and rotation, the drive system further includes the second magnetic
Property component, second magnetic part attract each other with first magnetic part；
The rotor includes rotor pedestal and blade, is formed with hydrodynamic configuration on the rotor pedestal, when rotor rotation,
The hydrodynamic configuration generates hydrodynamic floating power, the hydrodynamic floating power, second magnetic part and first magnetic part
The power collective effect to attract each other, makes the rotor maintain equilbrium position；
The hydrodynamic configuration includes dynamic pressure groove and helix；
It is characterized in that, the dynamic pressure groove is helicla flute；
The helicla flute is in convergence shape along the radial direction of the rotor, and closer to the radial center of the rotor, the helicla flute
Width it is narrower；
The depth of the helicla flute gradually becomes shallower as along the radial direction of the rotor, and closer to the radial center of the rotor, described
The depth of helicla flute is more shallow.
2. pump installation according to claim 1, which is characterized in that the helicla flute is double spiral groove.
3. pump installation according to claim 2, which is characterized in that the double spiral groove it is oppositely oriented.
4. pump installation according to claim 1, which is characterized in that the helicla flute is by single major trough and several branch's slot groups
It closes and is formed.
5. pump installation according to claim 4, which is characterized in that branch's slot is 2, and the helicla flute is in approximation Y
Shape.
6. pump installation according to claim 1, which is characterized in that the helicla flute is two-way spiral groove, the two-way spiral shell
Spin slot is combined and is formed by several positive slots and several opposing slots.
7. pump installation according to claim 6, which is characterized in that it is described forward direction slot and the opposing slot be respectively 1, it is described
Two-way spiral groove is in approximate V-arrangement.
8. pump installation according to claim 1, which is characterized in that at least a part of hydrodynamic configuration is not formed at institute
It states on rotor, and is formed in the inner wall of the enclosure of pump head.
9. pump installation according to claim 8, which is characterized in that all the hydrodynamic configuration is not formed at the rotor
On.
10. pump installation according to claim 1, which is characterized in that the fluid is blood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820708348.XU CN209048761U (en) | 2018-05-14 | 2018-05-14 | Pump installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820708348.XU CN209048761U (en) | 2018-05-14 | 2018-05-14 | Pump installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209048761U true CN209048761U (en) | 2019-07-02 |
Family
ID=67045998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820708348.XU Ceased CN209048761U (en) | 2018-05-14 | 2018-05-14 | Pump installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209048761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525039A (en) * | 2018-05-14 | 2018-09-14 | 苏州心擎医疗技术有限公司 | Pump installation |
-
2018
- 2018-05-14 CN CN201820708348.XU patent/CN209048761U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525039A (en) * | 2018-05-14 | 2018-09-14 | 苏州心擎医疗技术有限公司 | Pump installation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 801, 802, 803 and 804, Building 7, No. 188 Fuchunjiang Road, High-tech Zone, Suzhou, Jiangsu, 215000 Patentee after: Xinqing Medical (Suzhou) Co.,Ltd. Address before: Floor 1, Building 13, 101Park, No. 158, Jinfeng Road, Technopole, High tech Zone, Suzhou City, Jiangsu Province, 215163 Patentee before: SUZHOU XINQING MEDICAL TECHNOLOGY Co.,Ltd. |
|
| IW01 | Full invalidation of patent right | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20230227 Decision number of declaring invalidation: 560022 Granted publication date: 20190702 |