CN1410674A - Piezoelectric pump having new type high frequency valve - Google Patents
Piezoelectric pump having new type high frequency valve Download PDFInfo
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- CN1410674A CN1410674A CN 02153470 CN02153470A CN1410674A CN 1410674 A CN1410674 A CN 1410674A CN 02153470 CN02153470 CN 02153470 CN 02153470 A CN02153470 A CN 02153470A CN 1410674 A CN1410674 A CN 1410674A
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Abstract
The purpose of the invention is to design the piezoelectricity pump with the high frequency valve in order to reduce the posterity of starting up and closing up the pump valve. The invention includes the pump body, the fixer of the piezoelectric vibrator, the piezoelectric vibrator, the suction valve and the spitting valve in the pump body. The t-shaped valve core and the valve body with holes on it form the suction valve and the spitting valve. When the vibration frequency of the piezoelectric vibrator raises to the 100Hz, the suction valve and the spitting valve can follow well. The hysteresis effect of the valve has been overcome.
Description
Technical field
The invention belongs to the fluid machinery technical field, relate to the improvement of a kind of piezoelectric pump pump valve in the convection cell machinery subject.
Background technique
It is to utilize piezoelectric vibrator that electric energy is changed the mechanically deformation energy that valve piezoelectric pump is arranged, and then makes pump chamber produce the transducer of volume-variation.Because it is consuming time during fluid transmitting vibrations mechanical energy, fluid in the pump chamber is not incompressible yet in addition, the mass inertia that has pump valve simultaneously, thus the pump valve of passive open and close along with the raising of vibration frequency, open and close will lag behind the motion of piezoelectric vibrator.This phenomenon not only is present in valve piezoelectric pump, and is present in whole reciprocating pumps, and performance is not obvious when being low frequency.
Figure 1 shows that traditional valve piezoelectric pump that has.Wherein 1 is the pump housing, and 2 is piezoelectric vibrator, and 3 is the piezoelectric vibrator fixture, and 4,5 for sucking and discharge valve.Its working principle is: form sealed cavity by the pump housing 1, piezoelectric vibrator 2, suction valve 4 and discharge valve 5, piezoelectric vibrator 2 is applied alternating voltage, piezoelectric vibrator 2 will produce reciprocal distortion vertically, so just the cavity inner fluid is applied with reciprocating force, in suction process, fluid is delivered to suction valve 4,4 to the power that produces and will opens, being delivered to discharge valve 5,5 will close under this pressure effect.In the process of spuing, fluid is delivered to discharge valve 5,5 to the power that produces and will opens, and being delivered to suction valve 4,4 will close under this pressure effect.Suction valve 4 and discharge valve 5 will produce periodically open and close under the cyclically-varying of piezoelectric vibrator 2 like this, make the pump inner fluid form one-way flow.The amplitude of piezoelectric vibrator is very little, and it is also very little once to vibrate reciprocal volume-variation, so, once vibrate the reciprocal pump duty that produces also seldom.Want to improve pump duty, generally will adopt the method for the vibration frequency that improves piezoelectric vibrator.When the vibration frequency of piezoelectric vibrator 2 increased, the suction valve 4 and the discharge valve 5 of traditional form can't be realized well following under the high frequency.Traditional valve piezoelectric pump that has has been to use the piezoelectric pump of fly valve, plate valve, ball valve and cone valve, after frequency increases, pump duty the minimizing phenomenon do not occurred on the contrary by such increasing of anticipation, valve lags behind the motion of piezoelectric vibrator, zero delivery will appear in pump when this hysteresis is serious on macroscopic view, and visible traditional pump valve can not adapt to the characteristics of piezoelectric pump high-frequency work.
Summary of the invention
The objective of the invention is to overcome above deficiency, design a kind of high frequency valve press pump, improve traditional pump valve, improve the sensitivity that pump valve opens and closes, liquid is mobile when accelerating opening of valves, thereby reduces the hysteresis quality that pump valve opens and closes.
A kind of piezoelectric pump with novel high-frequency valve of the present invention includes the pump housing 1, be fixed on piezoelectric vibrator fixture 3 in the pump housing 1 chamber, be fixed on the piezoelectric vibrator 2 on the piezoelectric vibrator fixture 3 and be arranged on suction valve and discharge valve on the pump housing 1, it is characterized in that having adopted in suction valve and the discharge valve longitudinal section to be the spool 8 of " fourth " font, have the valve body 9 of hole 10,10-1, will suck spool and " erect " word cylinder of the spool that spues is strapped among the hole 10-1 of valve body 9 of suction valve and discharge valve position respectively, the suction valve 6 and the discharge valve 7 of formation.
Feature of the present invention comprises that also longitudinal section is " one " word thin plate of spool 8 of " fourth " font below suction valve 6 position valve bodies 9, longitudinal section is " one " word thin plate of spool 8 of " fourth " font above discharge valve 11 position valve bodies 9, and the hole 10 on the valve body 9 is at longitudinal section in the scope that " one " word thin plate of the spool 8 of " fourth " font covered; The longitudinal section that has adopted elastic material to make is " fourth " font and its, and " to erect " place, word cylinder summit be the spool 8 of the partition panel of suction port and discharge opening for constraint point, " one " word thin plate; " one " character segment that longitudinal section is the spool 8 of " fourth " font is holistic round thin plate, or the petal-like round thin plate of opening is arranged; Adopted cadre 8-1 to be inserted through suction valve 6 and the discharge valve 7 that cooperates and bond and form with the center hole of head 8-2 behind the hole 10-1 of valve body 9 with spool 8.
Piezoelectric pump with novel high-frequency valve of the present invention is formed sealed cavity by piezoelectric vibrator 2, the pump housing 1, suction valve 6 and discharge valve 7, piezoelectric vibrator 2 is applied alternating voltage, piezoelectric vibrator 2 will produce along the axial reciprocal distortion of oscillator, so just the cavity inner fluid is applied with reciprocating force, in suction process, fluid is delivered to suction valve 6 to the power that produces, and the suction valve spool will be opened, be delivered to discharge valve 7, the discharge valve spool will be closed under this pressure effect.In the process of spuing, fluid is delivered to discharge valve 7 to the power that produces, and the discharge valve spool will be opened, and be delivered to suction valve 6, and the suction valve spool will be closed under this pressure effect.Suction valve 6 and discharge valve 7 will produce periodically open and close under the cyclically-varying of piezoelectric vibrator 2 like this, make the pump inner fluid form one-way flow.When the vibration frequency of piezoelectric vibrator 2 increased, suction valve 6 can be realized well following under the high frequency with discharge valve 7.That is to say that the novel high-frequency valve has overcome the valve retardation phenomenon.Suction valve and discharge valve that the spool 8 that the present invention has adopted longitudinal section as shown in Figure 5 to be " fourth " font constitutes, different with traditional fly valve, plate valve, ball valve and cone valve structure, utilize the partition panel of " one " font elastic sheet as suction port and discharge opening, when fluid generation pressure acts on partition panel, warpage and tensile elasticity distortion take place with " erecting " word cylinder in " one " word partition panel simultaneously, and opening of valves is (it is the discharge valve working principle) fast as shown in Figure 5.Also do not economize energy because of having to hinder the object that flows around the partition panel, it is also fast to flow during opening of valves.Otherwise, when pressure reduced, equal each self-healing of " one " word thin plate and " erecting " word cylinder of " fourth " font spool 8 of resiliently deformable took place, its reaction is higher than fly valve, the plate valve of single partition panel form, so that valve cuts out is also quick.
Description of drawings
Fig. 1 is traditional valve piezoelectric pump structure master sectional view;
Structure master's sectional view of Fig. 2 high frequency valve piezoelectric pump of the present invention;
Fig. 3 high frequency valve core of the present invention structure master sectional view;
Fig. 4 high frequency valve body of the present invention structure master sectional view;
Fig. 5 high frequency valve of the present invention fundamental diagram (it is a discharge valve)
(a) be resting state, (b) for opening attitude;
The petal-shaped valve core structure schematic representation of Fig. 6 high frequency valve of the present invention;
The spool of Fig. 7 high frequency valve of the present invention is formed schematic representation;
The technology assembling schematic representation of Fig. 8 high frequency valve of the present invention.
Embodiment
Example 1: adopt spool 8 shown in Figure 3, the head 8-2 of spool 8 is a whole thin plate, adopt valve body 9 shown in Figure 4, hole 10 on the valve body 9 is 8, as suction port or discharge opening, assemble suction valve 6 and discharge valve 7 by technology shown in Figure 8 after, adopt current techique by the piezoelectric pump that assembles shown in Figure 2 then, the pump housing 1 is non-ferrous metal or macromolecular material, as: copper, ABS etc.Piezoelectric ceramic is a standardized product, and it is 50mm that piezoelectric vibrator 2 adopts diameter, and thickness is the round copper sheet of 0.1mm, form through bonding, piezoelectric vibrator fixture 3 is a rubber, and suction valve 6 is black rubber or silica gel with the spool 8 of discharge valve 7, valve body 9 is metal or macromolecular material, as: copper, ABS etc.
Example 2: adopt spool 8 shown in Figure 6, the head 8-2 of spool 8 is by 8 petal-shaped thin plates of forming with opening, adopt valve body 9 shown in Figure 4, hole 10 on the valve body 9 is 8, as suction port or discharge opening, assemble suction valve 6 and discharge valve 7 by technology shown in Figure 8 after, adopt current techique by the piezoelectric pump that assembles shown in Figure 2 then, the pump housing 1 is non-ferrous metal or macromolecular material, as: copper, ABS etc.Piezoelectric ceramic is a standardized product, and it is 50mm that piezoelectric vibrator 2 adopts diameter, and thickness is the round copper sheet of 0.1mm, form through bonding, piezoelectric vibrator fixture 3 is a rubber, and suction valve 6 is black rubber or silica gel with the spool 8 of discharge valve 7, valve body 9 is metal or macromolecular material, as: copper, ABS etc.
When the vibration frequency of piezoelectric vibrator 2 was increased to 100Hz, suction valve 6 and discharge valve 7 can be realized well following, and have overcome the valve retardation phenomenon among the present invention.
Claims (5)
1, a kind of piezoelectric pump with novel high-frequency valve includes the pump housing (1), be fixed on the piezoelectric vibrator fixture (3) in the pump housing (1) chamber, be fixed on the piezoelectric vibrator (2) on the piezoelectric vibrator fixture (3), and be arranged on suction valve and discharge valve on the pump housing (1), it is characterized in that having adopted in suction valve and the discharge valve longitudinal section to be the spool (8) of " fourth " font, have hole (10, valve body 10-1) (9) will suck spool and " erecting " word cylinder of the spool that spues is strapped in respectively in the hole (10-1) of valve body (9) of suction valve and discharge valve position, the suction valve (6) and the discharge valve (7) that form.
2, a kind of piezoelectric pump according to claim 1 with novel high-frequency valve, it is characterized in that longitudinal section is the below of " one " word thin plate of the spool of " fourth " font (8) at suction valve (6) position valve body (9), longitudinal section is " one " word thin plate of spool (8) of " fourth " font in the top of discharge valve (11) position valve body (9), and the hole (10) on the valve body (9) is at longitudinal section in the scope that " one " word thin plate of the spool (8) of " fourth " font covered.
3, a kind of piezoelectric pump with novel high-frequency valve according to claim 1, the longitudinal section that it is characterized in that adopting elastic material to make are " fourth " font and its, and " to erect " place, word cylinder summit be the spool (8) of the partition panel of suction port and discharge opening for constraint point, " one " word thin plate.
4, according to claim 1,2 or 3 described a kind of piezoelectric pumps with novel high-frequency valve, it is characterized in that " one " character segment that described longitudinal section is the spool of " fourth " font (8) is holistic round thin plate, or the petal-like round thin plate of opening is arranged.
5, a kind of piezoelectric pump with novel high-frequency valve according to claim 4 is characterized in that having adopted the cadre (8-1) with spool (8) to be inserted through suction valve (6) and the discharge valve (7) that cooperates and bond and form with the center hole of head (8-2) behind the hole (10-1) of valve body (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153470 CN1410674A (en) | 2002-11-29 | 2002-11-29 | Piezoelectric pump having new type high frequency valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02153470 CN1410674A (en) | 2002-11-29 | 2002-11-29 | Piezoelectric pump having new type high frequency valve |
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| Publication Number | Publication Date |
|---|---|
| CN1410674A true CN1410674A (en) | 2003-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02153470 Pending CN1410674A (en) | 2002-11-29 | 2002-11-29 | Piezoelectric pump having new type high frequency valve |
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| CN (1) | CN1410674A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427758C (en) * | 2004-03-01 | 2008-10-22 | 阿尔卑斯电气株式会社 | Liquid pump |
| CN101666307B (en) * | 2009-09-15 | 2012-11-28 | 南京航空航天大学 | Funnel-shaped valve piezoelectric pump and working method thereof |
| CN101634318B (en) * | 2008-07-25 | 2014-11-26 | 通用汽车环球科技运作公司 | Torque transmitting device actuation system using a piezoelectric pump |
| CN106939882A (en) * | 2017-02-14 | 2017-07-11 | 珠海普生医疗科技有限公司 | A kind of pump of flow-controllable |
| CN108561295A (en) * | 2018-02-08 | 2018-09-21 | 深圳垦拓流体控制有限公司 | It is a kind of to reduce remaining pump body structure |
| CN109162902A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of floating type I-shaped valve piezoelectric pump |
| CN109854490A (en) * | 2019-03-03 | 2019-06-07 | 浙江师范大学 | A kind of axial-flow type miniature piezoelectric gas compressor |
| CN112177919A (en) * | 2020-09-29 | 2021-01-05 | 长春工业大学 | Semi-flexible telescopic integrated valve piezoelectric pump |
-
2002
- 2002-11-29 CN CN 02153470 patent/CN1410674A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100427758C (en) * | 2004-03-01 | 2008-10-22 | 阿尔卑斯电气株式会社 | Liquid pump |
| CN101634318B (en) * | 2008-07-25 | 2014-11-26 | 通用汽车环球科技运作公司 | Torque transmitting device actuation system using a piezoelectric pump |
| CN101666307B (en) * | 2009-09-15 | 2012-11-28 | 南京航空航天大学 | Funnel-shaped valve piezoelectric pump and working method thereof |
| CN106939882A (en) * | 2017-02-14 | 2017-07-11 | 珠海普生医疗科技有限公司 | A kind of pump of flow-controllable |
| CN108561295A (en) * | 2018-02-08 | 2018-09-21 | 深圳垦拓流体控制有限公司 | It is a kind of to reduce remaining pump body structure |
| CN109162902A (en) * | 2018-09-20 | 2019-01-08 | 长春工业大学 | A kind of floating type I-shaped valve piezoelectric pump |
| CN109162902B (en) * | 2018-09-20 | 2023-12-15 | 长春工业大学 | Floating type I-shaped valve piezoelectric pump |
| CN109854490A (en) * | 2019-03-03 | 2019-06-07 | 浙江师范大学 | A kind of axial-flow type miniature piezoelectric gas compressor |
| CN112177919A (en) * | 2020-09-29 | 2021-01-05 | 长春工业大学 | Semi-flexible telescopic integrated valve piezoelectric pump |
| CN112177919B (en) * | 2020-09-29 | 2022-11-29 | 长春工业大学 | Semi-flexible telescopic integrated valve piezoelectric pump |
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