CN104481860B - Wrong thimble shape flow tube Valveless piezoelectric pump - Google Patents
Wrong thimble shape flow tube Valveless piezoelectric pump Download PDFInfo
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- CN104481860B CN104481860B CN201410533056.3A CN201410533056A CN104481860B CN 104481860 B CN104481860 B CN 104481860B CN 201410533056 A CN201410533056 A CN 201410533056A CN 104481860 B CN104481860 B CN 104481860B
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- wrong
- flow tube
- shape flow
- thimble shape
- circular
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- 239000012530 fluid Substances 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000004941 influx Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Wrong thimble shape flow tube Valveless piezoelectric pump belongs to field of fluid machinery.It is characterized in that: the face of two circular piezoelectric vibrator (2) identical polars is mounted opposite on the pump housing (3), cavity between two circular piezoelectric vibrators (2) is pump chamber (1), and the pump housing (3) is connected on wrong thimble shape flow tube (5) by the through hole (4) of side；Equatorial line (7) in the O1 side, the center of circle of wrong thimble shape flow tube (5) is circular arc, is concentric with O1 after mounting with circular pump chamber (1) and is positioned at plane that is parallel with piezoelectric vibrator (2) and that pass through side opening (4) axis (8)；The outside equatorial line (6) of wrong thimble shape flow tube (5) is circular arc line, it also is located at and is parallel to piezoelectric vibrator (2) and by the plane of the axis (8) of side opening (4), but center of circle O2 is on the straight line vertical with axis (8) by O1 point, and has offset distance L with O1；Wrong thimble shape flow tube (5) has 3 stream sockets.The present invention only achieves the one-way flow of fluid with a mozzle, has potential use widely in MEMS.
Description
Technical field
The present invention relates to a kind of Valveless piezoelectric pump, belong to field of fluid machinery.
Background technology
Valveless piezoelectric pump simple in construction, mechanical driving-chain, reliability is high, and electromechanical conversion efficiency is high, easily
Microminaturization, in health care, Aero-Space, has a wide range of applications in MEMS.
Summary of the invention
Fig. 1 is the structure chart of Valveless piezoelectric pump of the present invention.
Wrong thimble shape flow tube Valveless piezoelectric pump, it is characterised in that: two circular piezoelectric vibrator 2 identical polars
Face be mounted opposite on the pump housing 3, the cavity between two circular piezoelectric vibrators 2 is circular pump chamber 1,
The pump housing 3 is connected in wrong thimble shape flow tube 5 by the through hole 4 of side；
Equatorial line 7 in the O1 side, the center of circle of wrong thimble shape flow tube 5 is circular arc, after mounting with circle
Pump chamber 1 be concentric with O1 and be positioned at parallel with piezoelectric vibrator 2 and by the plane of side opening 4 axis 8；
The outside equatorial line 6 of wrong thimble shape flow tube 5 is circular arc line, also is located at and is parallel to piezoelectric vibrator 2 and leads to
Cross in the plane of axis 8 of side opening 4, but center of circle O2 be on the straight line vertical with axis 8 by O1 point,
And have offset distance L with O1, meeting 0 < L < R2-R1, R2 is the radius of outside equatorial line 6, and R1 is inner side
The radius of equatorial line 7；Wrong thimble shape flow tube 5 has 3 stream sockets, wherein the first gateway 9 He
Second gateway 10 couples with extraneous pipeline, the 3rd gateway 11 couple with the through hole 4 on the pump housing 3 and
Coaxially.
The operation principle of the curved guide groove Valveless piezoelectric pump that the present invention proposes is described below:
Two circular piezoelectric vibrators 2 are bonded in two of the end face of the pump housing 3 respectively with the one side that polarity is identical
On counterbore 12；Wrong thimble shape flow tube 5 is arranged on the side opening 4 of the pump housing 3 side；In wrong thimble shape flow tube
The inner side equatorial line 7 of the O1 side, the center of circle of 5 is circular arc, is concentric with circular pump chamber 1 after mounting
O1 and be positioned at parallel with piezoelectric vibrator 2 and by the plane of side opening 4 axis 8；Wrong thimble shape flow tube 5
Outside equatorial line 6 be circular arc line, also be located at and be parallel to piezoelectric vibrator 2 and by the axis 8 of side opening 4
Plane in, but center of circle O2 is on the straight line vertical with first axle 8 by center of circle O1 point, and with
O1 has offset distance L, and meeting 0 < L < R2-R1, R2 is the radius of outside equatorial line 6, and R1 is equator, inner side
The radius of line 7；Wrong thimble shape flow tube 5 has 3 stream sockets, wherein the first gateway 9 and second
Gateway 10 couples with extraneous pipeline, and the 3rd gateway 11 couples with the through hole 4 on the pump housing 3 and coaxially.
Further, in wrong thimble shape flow tube 5, it is positioned on the second axis 15 of the 3rd gateway 11 and has V
Shape flow distribution plate 14, its V-arrangement is symmetrical about the second axis 15, and the 3rd gateway 11 is pointed in the bottom of V-arrangement.
The present invention uses wrong thimble shape flow tube 5 to achieve only fluid generation just can be made unidirectional with a mozzle
Flowing, simplifies tradition Valveless piezoelectric pump and must install the structure of two mozzles, makes the Valveless piezoelectric pump can
With more microminaturization, MEMS has widely potential use.
Accompanying drawing explanation
The wrong thimble shape flow tube Valveless piezoelectric pump installation diagram front view of Fig. 1 (a)；
The wrong thimble shape flow tube Valveless piezoelectric pump installation diagram top view of Fig. 1 (b)；
Fig. 2 (a) pump housing 3B-B sectional view；
Fig. 2 (b) pump housing 3 top view；
Fig. 3 mistake thimble shape flow tube 5.
Detailed description of the invention
The specific embodiment of the invention such as Fig. 1-Fig. 3.Piezoelectric vibrator diameter 30mm, wrong thimble shape flow tube 5
Cross section be circular；Generatrix radius 31.5mm, outside generatrix radius 36.5mm inside wrong thimble shape flow tube,
Offset distance L is 2.5mm, running voltage 220V, frequency 50Hz, and with water as working media, flow reaches 1540mg/s.
Owing to there is offset distance L so the internal diameter of the first gateway 9 is more than the internal diameter of the second gateway 10；When
During piezoelectric pump incoming transport power supply, when suction, two piezoelectric vibrators 2 are in a half period of alternating current
In, in the circular outer lateral bend of pump chamber 1, circular pump chamber 1, pressure declines respectively, and fluid is from the wrong heart
First gateway 9 and second gateway 10 of annular flow tube 5 flow into, and through the 3rd gateway 11, side opening
4 flow into circular pump chamber 1；When alternating current changes pressure direction, and when entering the next half period, piezoelectric pump enters
Enter scheduling stage, two piezoelectric vibrators 2 lateral bend in circular pump chamber 1, circular pump chambers 1 respectively
Volume declines, and pressure raises, and the circular fluid in pump chamber 1 flows into through side opening 4 and the 3rd gateway 11
Wrong thimble shape flow tube 5, and flow out the first gateway 9 and the second gateway 10；Due to wrong thimble shape flow tube 5
The internal diameter of the first gateway 9 more than the internal diameter of the second gateway 10, therefore in a pump cycle,
All there is the influx of fluid and the difference of discharge, according to fluid in the first gateway 9 and the second gateway 10
The principle of continuity of flowing, the influx difference of the first gateway 9 should be equal to the discharge of the second gateway 10
Difference, thus produce net flow；Under the alternating voltage repeated action of alternating current, pump is macroscopically creating
Fluid flows into from the first gateway 9, the net flow flowed out from the second gateway 10.
Claims (2)
1. wrong thimble shape flow tube Valveless piezoelectric pump, it is characterised in that: two circular piezoelectric vibrators (2) are identical
The face of polarity is mounted opposite on the pump housing (3), and the cavity between two circular piezoelectric vibrators (2) is circular
Pump chamber (1), the pump housing (3) is connected on wrong thimble shape flow tube (5) by the side opening (4) of side；
Inner side equatorial line (7) in the O1 side, the center of circle of wrong thimble shape flow tube (5) is circular arc, after mounting
It is concentric with center of circle O1 with circular pump chamber (1) and is positioned at parallel with piezoelectric vibrator (2) and passes through side opening (4) first
In the plane of axis (8)；The outside equatorial line (6) of wrong thimble shape flow tube (5) is circular arc line, also is located at parallel
In the plane of piezoelectric vibrator (2) and the first axle (8) passing through side opening (4), but center of circle O2 is passing through the center of circle
On the straight line that O1 point is vertical with first axle (8), and there is offset distance L with center of circle O1, meet 0 < L < R2-R1,
R2 is the radius of outside equatorial line (6), and R1 is the radius of inner side equatorial line (7)；Wrong thimble shape flow tube (5) has
3 stream sockets, wherein the first gateway (9) and the second gateway (10) couple with extraneous pipeline, and the 3rd
Gateway (11) couples and coaxial with the side opening (4) on the pump housing (3).
Wrong thimble shape flow tube Valveless piezoelectric pump the most according to claim 1, it is characterised in that: wrong thimble
In shape flow tube (5), it is positioned on second axis (15) of the 3rd gateway (11) and has V-arrangement flow distribution plate (14), its V
Shape is symmetrical about the second axis (15), and the 3rd gateway (11) is pointed in the bottom of V-arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533056.3A CN104481860B (en) | 2014-10-11 | Wrong thimble shape flow tube Valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410533056.3A CN104481860B (en) | 2014-10-11 | Wrong thimble shape flow tube Valveless piezoelectric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104481860A CN104481860A (en) | 2015-04-01 |
| CN104481860B true CN104481860B (en) | 2017-01-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331538A1 (en) * | 2002-01-26 | 2003-07-30 | Eppendorf Ag | Piezo-electrically controlled micro actuator for fluids |
| CN1948754A (en) * | 2006-11-14 | 2007-04-18 | 北京工业大学 | Built in rotable multiblock valve less piezoelectric pump |
| CN102155389A (en) * | 2011-05-30 | 2011-08-17 | 浙江师范大学 | Valveless piezoelectric pump with asymmetrical runners |
| CN102913422A (en) * | 2012-10-18 | 2013-02-06 | 南京航空航天大学 | Drag-reducing valveless piezoelectric pump with drag-reducing fluids |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1331538A1 (en) * | 2002-01-26 | 2003-07-30 | Eppendorf Ag | Piezo-electrically controlled micro actuator for fluids |
| CN1948754A (en) * | 2006-11-14 | 2007-04-18 | 北京工业大学 | Built in rotable multiblock valve less piezoelectric pump |
| CN102155389A (en) * | 2011-05-30 | 2011-08-17 | 浙江师范大学 | Valveless piezoelectric pump with asymmetrical runners |
| CN102913422A (en) * | 2012-10-18 | 2013-02-06 | 南京航空航天大学 | Drag-reducing valveless piezoelectric pump with drag-reducing fluids |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 |