CN104389769A - Curved guide groove valve-free piezoelectric pump - Google Patents
Curved guide groove valve-free piezoelectric pump Download PDFInfo
- Publication number
- CN104389769A CN104389769A CN201410535431.8A CN201410535431A CN104389769A CN 104389769 A CN104389769 A CN 104389769A CN 201410535431 A CN201410535431 A CN 201410535431A CN 104389769 A CN104389769 A CN 104389769A
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- Prior art keywords
- guide groove
- curved guide
- rectangular section
- curve
- outside
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- Granted
Links
- 239000012530 fluid Substances 0.000 abstract description 13
- 239000003814 drug Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The invention discloses a curved guide groove valve-free piezoelectric pump, and belongs to the field of fluid machines. The surfaces of the same polarity of two circular piezoelectric vibrators (2) are arranged oppositely on a pump body (3); the pump body (3) is connected to a curved guide groove (5) through a through hole (4) in a side face; the curved guide groove (5) consists of a rectangular section tube (7), and an outer side curved surface (8) and an inner side curved surface (14) therein; the inner side and the outer side are relative to the position of the pump body (3); the outer side curved surface (8) and the rectangular section tube (7) construct an outer side curved hopper (9); the inner side curved surface (14) and the rectangular section tube (7) construct an inner side curved hopper (15); the outer side curved surface (8) and the inner side curved surface (14) are secondary paraboloids; the inner side curved surface (9) and the outer side curved hopper (15) are uniformly arranged on both sides of the boundary (13) of the curved guide groove (5) in a staggered way. By adopting the curved guide groove valve-free piezoelectric pump, single-direction flow of fluid is realized by using the curved guide groove (5). The curved guide groove valve-free piezoelectric pump can be applied to the fields of pharmaceuticals, medical treatment and the like.
Description
Technical field
The present invention relates to a kind of Valveless piezoelectric pump, belong to field of fluid machinery.
Background technique
Valveless piezoelectric pump structure is simple, and mechanical Transmitted chains, reliability is high, and electromechanical conversion efficiency is high, easy microminaturization, and in health care, Aero-Space, have a wide range of applications in MEMS.
Summary of the invention
Fig. 1 is the structural drawing of Valveless piezoelectric pump of the present invention.
Curved guide groove Valveless piezoelectric pump, 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 curved guide groove (5) by the through hole (4) of side;
Curved guide groove (5) is made up of the outside curve (8) in rectangular section tube (7) and rectangular section tube (7) and inner curve (14), and so-called inner side and outer side is with for the position relative to the pump housing (3); Outside curve (8) and rectangular section tube (7) form outside Qu Dou (9); Inner curve (14) and rectangular section tube (7) form inner side Qu Dou (15); Outside curve (8) and inner curve (14) are secondary parabola; Rectangular section tube (7) is divided into outside and accounts for 2/3rds by separatrix (13), and inner side accounts for two-part of 1/3rd; Outside curve (8) extends to the separatrix (13) of semi-circular stream pipe (5); Inner curve (14) also extends to separatrix (13) place; Inner side Qu Dou (9) and outside Qu Dou (15) are evenly staggered in separatrix (13) both sides of curved guide groove (5); Curved guide groove (5) has 3 stream sockets, wherein the first gateway (10) and the second gateway (11) connect with extraneous pipeline, and the 3rd gateway (12) connects with the through hole (4) on the pump housing (2).
The working principle of the curved guide groove Valveless piezoelectric pump that the present invention proposes is described below:
Two circular piezoelectric vibrators (2) are bonded on two counterbores (16) of the end face of the pump housing (3) respectively with the one side that polarity is identical; Curved guide groove (5) is arranged on the through hole (4) of the pump housing (3) side; Curved guide groove (5) is made up of the outside curve (8) in rectangular section tube (7) and rectangular section tube (7) and inner curve (14), and so-called inner side and outer side is with for the position relative to the pump housing (3); Outside curve (8) and rectangular section tube (7) form outside Qu Dou (9); Inner curve (14) and rectangular section tube (7) form inner side Qu Dou (15); Outside curve (8) and inner curve (14) are secondary parabola; Rectangular section tube (7) is divided into outside and accounts for 2/3rds by separatrix (13), and inner side accounts for two-part of 1/3rd; Outside curve (8) extends to the separatrix (13) of curved guide groove (5); Inner curve (14) also extends to separatrix (13) place; Inner side Qu Dou (9) and outside Qu Dou (15) are evenly staggered in separatrix (13) both sides of curved guide groove (5); Curved guide groove (5) has 3 stream sockets, wherein the first gateway (10) and the second gateway (11) connect with extraneous pipeline, for rectangular cross-section, 3rd gateway (12) connects with the through hole (4) on the pump housing (3), is circular cross-section.
The present invention uses curved guide groove (5) to achieve the one-way flow of fluid, simplifies conventional piezoelectric pump structure.This invention is applied in the aspect such as preparation, conveying, injection of suspension, emulsion and the medicament containing microparticle in pharmacy, medical field, can form new technique, increase substantially manufacturing efficiency and yield rate.In addition, this invention also has potential use widely at other relevant fluid transmission fields.
Accompanying drawing explanation
Fig. 1 (a) curved guide groove Valveless piezoelectric pump erection drawing plan view;
Fig. 1 (b) curved guide groove Valveless piezoelectric pump erection drawing plan view;
Fig. 2 (a) pump housing (3) B-B sectional view;
Fig. 2 (b) pump housing (3) plan view;
The curved guide groove of Fig. 3 (5);
Qu Dou (9) outside Fig. 4) schematic diagram.
Inner side Qu Dou (15) shape and outside Qu Dou (9) similar.
Embodiment
The specific embodiment of the invention is as Fig. 1-Fig. 4.Piezoelectric vibrator diameter 30mm, the wide 6mm of curved guide groove, high 4mm operating voltage 220V, frequency 50Hz, be working medium with water, flow reaches 1800mg/s.
When piezoelectric pump incoming transport power supply, when inhaling journey, two piezoelectric vibrators (2) are in a halftime of Ac, respectively to pump chamber (1) outer lateral bend, pump chamber (1) internal pressure declines, fluid flows into from first gateway (10) of curved guide groove (5) and the second gateway (11), and through the 3rd gateway (12), side opening (4) flows into pump chamber (1); When Ac changes pressure direction, when entering the next halftime, piezoelectric pump enters the scheduling stage, two piezoelectric vibrators (2) are respectively to pump chamber (1) interior lateral bend, pump chamber (1) volume declines, pressure raises, and the fluid via through holes (4) in pump chamber (1) and the 3rd gateway (12) flow into curved guide groove (5), and flow out the first gateway (10) and the second gateway (11); Due to the effect of outside Qu Dou (9) and inner side Qu Dou (15) in curved guide groove (5), the flow resistance that fluid flows to the second gateway (11) direction from the first gateway (10) is less than the flow resistance flowing to the first gateway (10) direction from the second gateway (11); So, the fluid that the fluid ratio flowed into by the first gateway (10) in suction journey flows out the first gateway (10) in scheduling is many, in like manner, inhale in journey and flow into by the second gateway (11) less fluid flowing out the second gateway (11) in the fluid ratio scheduling of curved guide groove (5), therefore macroscopically creating fluid from the first gateway (10) inflow, from the net flow that the second gateway (11) flow out.
Claims (1)
1. curved guide groove Valveless piezoelectric pump, 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 curved guide groove (5) by the through hole (4) of side;
Curved guide groove (5) is made up of the outside curve (8) in rectangular section tube (7) and rectangular section tube (7) and inner curve (14), and so-called inner side and outer side is with for the position relative to the pump housing (3); Outside curve (8) and rectangular section tube (7) form outside Qu Dou (9); Inner curve (14) and rectangular section tube (7) form inner side Qu Dou (15); Outside curve (8) and inner curve (14) are secondary parabola; Rectangular section tube (7) is divided into outside and accounts for 2/3rds by separatrix (13), and inner side accounts for two-part of 1/3rd; Outside curve (8) extends to the separatrix (13) of semi-circular stream pipe (5); Inner curve (14) also extends to separatrix (13) place; Inner side Qu Dou (9) and outside Qu Dou (15) are evenly staggered in separatrix (13) both sides of curved guide groove (5); Curved guide groove (5) has 3 stream sockets, wherein the first gateway (10) and the second gateway (11) connect with extraneous pipeline, and the 3rd gateway (12) connects with the through hole (4) on the pump housing (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535431.8A CN104389769B (en) | 2014-10-11 | 2014-10-11 | Curved guide groove Valveless piezoelectric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410535431.8A CN104389769B (en) | 2014-10-11 | 2014-10-11 | Curved guide groove Valveless piezoelectric pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104389769A true CN104389769A (en) | 2015-03-04 |
| CN104389769B CN104389769B (en) | 2016-08-24 |
Family
ID=52607715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410535431.8A Expired - Fee Related CN104389769B (en) | 2014-10-11 | 2014-10-11 | Curved guide groove Valveless piezoelectric pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104389769B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020043895A1 (en) * | 2000-10-25 | 2002-04-18 | Richards Robert F. | Piezoelectric micro-transducers, methods of use and manufacturing methods for the same |
| CN2818843Y (en) * | 2005-09-28 | 2006-09-20 | 吴丽萍 | Single-vibrator and double-cavity piezo-electric pump without valve |
| CN1908433A (en) * | 2006-08-15 | 2007-02-07 | 华南农业大学 | Two-chamber valveless piezoelectric pump |
| US20110176945A1 (en) * | 2008-08-01 | 2011-07-21 | Ams R&D Sas | Crinkle diaphragm pump |
| 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 |
-
2014
- 2014-10-11 CN CN201410535431.8A patent/CN104389769B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020043895A1 (en) * | 2000-10-25 | 2002-04-18 | Richards Robert F. | Piezoelectric micro-transducers, methods of use and manufacturing methods for the same |
| CN2818843Y (en) * | 2005-09-28 | 2006-09-20 | 吴丽萍 | Single-vibrator and double-cavity piezo-electric pump without valve |
| CN1908433A (en) * | 2006-08-15 | 2007-02-07 | 华南农业大学 | Two-chamber valveless piezoelectric pump |
| US20110176945A1 (en) * | 2008-08-01 | 2011-07-21 | Ams R&D Sas | Crinkle diaphragm pump |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104389769B (en) | 2016-08-24 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160824 |