CN100439717C - Double suction microminiature type vane pump with no spindle drive - Google Patents
Double suction microminiature type vane pump with no spindle drive Download PDFInfo
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- CN100439717C CN100439717C CNB2007100628576A CN200710062857A CN100439717C CN 100439717 C CN100439717 C CN 100439717C CN B2007100628576 A CNB2007100628576 A CN B2007100628576A CN 200710062857 A CN200710062857 A CN 200710062857A CN 100439717 C CN100439717 C CN 100439717C
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- pump
- impeller
- import
- rotor
- microminiature
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Abstract
The present invention relates to a double-suction microminiature paddle pump. It is characterized by that its pump paddle wheel and motor rotor are formed into one body, the centre of said motor rotor is equipped with two paddle wheel inlets which are respectively communicated with pump paddle wheel, the cross-sectional area of said two inlets is progressively expanded along flowing direction; said two paddle wheel inlets ar respectively communicated with two suction inlets of pump. Said pump has no need of mechanical drive shaft, and can implement high-effective and safety conveyance.
Description
Technical field
The present invention relates to a kind of small-sized vane pump, particularly a kind ofly be suitable for not having external axle, fluid is not allowed the microminiature vane pump that seepage or fluid do not contact with the external world of pump.This invention can be applicable to the feedway of single-phase or heterogeneous fluid such as extracorporeal circulation of blood device, artificial heart, chemical agent and liquid noble metal.
Background technique
Because the advantage of microminiature vane pump on bulk is applied in many important industries.The microminiature vane pump that uses mainly divides two classes according to the structure of axle at present: the one, adopt external form, and the one, adopt maglev form.To the microminiature vane pump of external axle is arranged, owing to adopt mechanical seal or other gland seal device, the fluid in the pump and the outside of pump can not isolate fully, can not effectively prevent seepage or the pump inner fluid and extraneous contacting of fluid; To using maglev microminiature vane pump, though overcome fluid leaks, pump inner fluid and the extraneous problem that contacts, but a slough (or claiming stagnation region) has appearred in the back shroud side at pump impeller simultaneously, and this slough is unfavorable for FLUID TRANSPORTATION under many circumstances.Will form thrombus in the slough during as pumping blood.For solving the problem of slough, people often take to add the measure of flushing hole on the back shroud of pump impeller.Yet, add flushing hole after, microminiature vane pump mobile is difficult to optimize, control, hydraulic efficiency reduces.
For addressing the above problem, need a kind of new blade pump structure of design, this structure can effectively satisfy the requirement that microminiature vane pump inner fluid is contactless with the external world, eliminate the stagnation region that flows.
Summary of the invention
The objective of the invention is to propose a kind of double suction and do not have shaft-driven microminiature vane pump, this structure can make pump satisfy no external axle, fluid does not allow that seepage or fluid do not contact, eliminate the requirement of mobile stagnation region with the external world of pump, with the operational reliability that guarantees pump, the efficient that improves pump.
Technological scheme of the present invention is as follows:
A kind of double suction does not have shaft-driven microminiature vane pump, comprise the pump housing, Pump Suction Nozzle, pump impeller, rotor, motor stator, pumping chamber and pump discharge, it is characterized in that: described pump impeller and rotor are one, are provided with impeller first import and impeller second import that are connected with pump impeller respectively at the center of rotor; Described impeller first import and impeller second import are communicated with first suction port of pump and second suction port of pump respectively.
Technical characteristics of the present invention also is: the flow direction of the cross-sectional area longshore current body of described impeller first import and impeller second import enlarges gradually.
Another technical characteristics of the present invention is: described pump impeller is positioned at the intermediate portion of rotor, and impeller first import and impeller second import are with respect to the pump impeller symmetric arrangement.
On the basis of such scheme, be provided with diffuser between pumping chamber of the present invention and the pump discharge.Described rotor supports by three groups of radial direction magnetic bearings and two groups of axial magnetic bearings.
The present invention compared with prior art, have the following advantages and technique effect: 1. fluid enters pump impeller from the two ends of rotor, can form the condition that becomes a mandarin of symmetry in the import of pump impeller, both helped improving the hydraulic efficiency of pump, also can reduce axial hydraulic thrust effectively, alleviate the axial load of magnetic bearing.2. adopt double suction not have the structure of axle, to the flow channel that forms self-loopa between the impeller inlet at rotor two ends, can eliminate mobile stagnation region at impeller outlet.When this pump uses as extracorporeal circulation of blood pump or artificial heart pump, must not establish flushing hole in addition and can effectively prevent to form thrombus at the position, gap of runner.3. adopt no mechanical shaft-driven structure, can make the outside of pump inner fluid and pump isolate fully, realize ne-leakage, free of contamination efficient, safe transport.4. by suitable processing and packaging method, can obtain very simple pump structure.
Description of drawings
Fig. 1 does not have the main sectional view of shaft-driven microminiature vane pump for a kind of double suction provided by the invention.
Fig. 2 is the sectional view of A-A section among Fig. 1.
Among the figure: the 1-pump housing; The 2-rotor; 3-pump first suction port; First import of 4-impeller; The 5-radial direction magnetic bearing; The 6-motor stator; The 7-pump impeller; 8-pump second suction port; The 9-axial magnetic bearing; The 10-pump discharge; The 11-blade; The 12-pumping chamber; The 13-diffuser; Second import of 14-impeller; The 15-flow gap.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention, structure are further described
The main sectional view of Fig. 1 shaft-driven microminiature vane pump for double suction does not have.This microminiature vane pump comprises the pump housing 1, pump first suction port 3, pump second suction port 8, pump impeller 7, rotor 2, motor stator 6, pumping chamber 12 and pump discharge 10.
Be suspended in the internal cavities of the pump housing 1 with rotor 2 for the pump impeller 7 of one, realize that the no axle of pump impeller 7 drives and supports.Like this, guaranteed pump inner fluid and outside isolation, realized ne-leakage, free of contamination efficient, safe transport from structure.
The working procedure of pump is as follows:
Fluid is entered by first Pump Suction Nozzle 3 and second Pump Suction Nozzle 8, compiles back inflow pump impeller 7 substantially symmetrically along the center of rotor 2 through impeller first import 4 and impeller second import 14, two fluid streams that cross-sectional area enlarges gradually.After fluid was subjected to the pressurization of pump impeller 7, deceleration during through pumping chamber 12 and diffuser 13, diffusion were discharged at pump discharge 10 at last.Because the pressure of pump impeller 7 outlet port fluids is higher than the pressure at impeller first import 4 and impeller second import 14 places, fluid in the flow gap 15 between the rotor 2 and the pump housing 1 will be under differential pressure action to two end motions of rotor 2, and import the fluid that enters from first Pump Suction Nozzle 3 and second Pump Suction Nozzle 8, realize the automatic flushing of gap inner fluid.
Claims (5)
1, a kind of double suction does not have shaft-driven microminiature vane pump, comprise the pump housing (1), pump impeller (7), rotor (2), motor stator, Pump Suction Nozzle, pumping chamber (12) and pump discharge (10), it is characterized in that: described pump impeller (7) is an one with rotor (2), is provided with impeller first import (4) and impeller second import (14) that is connected with pump impeller (7) respectively at the center of rotor (2); Described impeller first import is communicated with pump first suction port (3), and described impeller second import is communicated with pump second suction port (8).
2, do not have shaft-driven microminiature vane pump according to the described double suction of claim 1, it is characterized in that: the flow direction of the cross-sectional area longshore current body of described impeller first import (4) and impeller second import (14) enlarges gradually.
3, there is not shaft-driven microminiature vane pump according to claim 1 or 2 described double suctions, it is characterized in that: described pump impeller (7) is positioned at the intermediate portion of rotor (2), and impeller first import (4) and impeller second import (14) are with respect to the pump impeller symmetric arrangement.
4, do not have shaft-driven microminiature vane pump according to the described double suction of claim 3, it is characterized in that: between described pumping chamber (12) and pump discharge (10), be provided with diffuser (13).
5, do not have shaft-driven microminiature vane pump according to the described double suction of claim 4, it is characterized in that: described rotor supports by three groups of radial direction magnetic bearings (5) and two groups of axial magnetic bearings (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100628576A CN100439717C (en) | 2007-01-19 | 2007-01-19 | Double suction microminiature type vane pump with no spindle drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100628576A CN100439717C (en) | 2007-01-19 | 2007-01-19 | Double suction microminiature type vane pump with no spindle drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101004175A CN101004175A (en) | 2007-07-25 |
| CN100439717C true CN100439717C (en) | 2008-12-03 |
Family
ID=38703513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100628576A Expired - Fee Related CN100439717C (en) | 2007-01-19 | 2007-01-19 | Double suction microminiature type vane pump with no spindle drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100439717C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581307B (en) * | 2009-05-20 | 2011-04-27 | 清华大学 | Hydrodynamic float vane type microminiature pump |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104179694B (en) * | 2014-08-29 | 2016-02-17 | 夏善胜 | The without hindrance pump of direct current |
| CN109026739B (en) * | 2018-07-24 | 2020-06-09 | 江苏大学 | Residual energy recovery shaftless impeller pump |
| CN111963475B (en) * | 2020-08-05 | 2021-11-23 | 清华大学 | Axial force self-balancing vane pump unit |
| CN112747910B (en) * | 2020-12-11 | 2022-03-18 | 清华大学 | Leakage-free pump dynamic pressure suspension rotor performance detection device |
| CN113686184B (en) * | 2021-08-31 | 2023-11-24 | 中国科学院空间应用工程与技术中心 | Spacecraft thermal control single-phase fluid loop device based on shaftless pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185816Y (en) * | 1993-10-06 | 1994-12-21 | 周忠良 | Non-axial force segmental type multi-stage centrifugal pump |
| CN2309447Y (en) * | 1997-07-29 | 1999-03-03 | 方松泉 | Vertical double-absorption centrifugal pump |
| CN2443173Y (en) * | 1999-01-23 | 2001-08-15 | 吴文俊 | Non-leakage self-priming centrifugal pump |
| CN2477869Y (en) * | 2000-11-28 | 2002-02-20 | 金河银 | Non-axle water pump |
-
2007
- 2007-01-19 CN CNB2007100628576A patent/CN100439717C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2185816Y (en) * | 1993-10-06 | 1994-12-21 | 周忠良 | Non-axial force segmental type multi-stage centrifugal pump |
| CN2309447Y (en) * | 1997-07-29 | 1999-03-03 | 方松泉 | Vertical double-absorption centrifugal pump |
| CN2443173Y (en) * | 1999-01-23 | 2001-08-15 | 吴文俊 | Non-leakage self-priming centrifugal pump |
| CN2477869Y (en) * | 2000-11-28 | 2002-02-20 | 金河银 | Non-axle water pump |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581307B (en) * | 2009-05-20 | 2011-04-27 | 清华大学 | Hydrodynamic float vane type microminiature pump |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101004175A (en) | 2007-07-25 |
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