CN101000050A - Halfsphere-shaped sucking type piezoelectric ultrasonic pump - Google Patents
Halfsphere-shaped sucking type piezoelectric ultrasonic pump Download PDFInfo
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- CN101000050A CN101000050A CN 200610132317 CN200610132317A CN101000050A CN 101000050 A CN101000050 A CN 101000050A CN 200610132317 CN200610132317 CN 200610132317 CN 200610132317 A CN200610132317 A CN 200610132317A CN 101000050 A CN101000050 A CN 101000050A
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- halfsphere
- elastic body
- type piezoelectric
- metallic elastic
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- 239000000919 ceramic Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 6
- 229920001967 Metal rubber Polymers 0.000 abstract description 5
- 230000005672 electromagnetic field Effects 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 150000001875 compounds Chemical class 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 241000707825 Argyrosomus regius Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The semi-cymbal type sucking piezoelectric ultrasonic pump consists of pump housing, sealing rubber ring and driving part. The driving part includes piezoelectric element and semi-cymbal shaped metal elastomer adhered together, and the pump housing has water outlet pipe set in the position corresponding to the semi-cymbal shaped metal elastomer. The piezoelectric ultrasonic pump, under the excitation of ultrasonic frequency signal source, amplifies the radial small amplitude ultrasonic vibration of the piezoelectric ceramic element into the axial great amplitude ultrasonic vibration of the semi-cymbal shaped metal elastomer, while driving the fluid to climb inside the pipe to realize fluid driving. The piezoelectric ultrasonic pump of the present invention has simple structure, great flow rate, high pressure, high reliability no electromagnetic field action, small size and other advantages.
Description
Technical field
The invention belongs to the micropump technical field, particularly relate to a kind of ultrasonic pump that utilizes piezoelectric effect.
At present electronic product is compact day by day, and component density is more and more high, operating rate is more and more fast, " heat radiation " problem become electronic product reliability and working life the most formidable technical bottleneck.Micropump is used widely in a plurality of fields such as propelling of the conveying of medicine trace, the injection of fuel trace, cell separation, integrating electronic element cooling, microchemical analysis and microminiature satellite as the core of micrometeor system.
Piezoelectric pump is a kind of of micropump, belong to the novel fluid drive unit, it utilizes the inverse piezoelectric effect of piezoelectric constant to drive, the driving power of traditional electrical magnetic pumping part, drive part and pump housing three are made one, have simple in structure, volume is little, slim, in light weight, power consumption is low, noiseless, no electromagnetic interference, reliable operation, per unit volume can produce bigger advantages such as output power.In the present existing piezoelectric ultrasonic pump, adopt piezoelectric pile or langevin transducer structure as driving element usually, complex structure, volume increase, and are unfavorable for the small-sized or microminiaturized of this type of pump, have limited the piezoelectric supersonic pump performance and have improved and apply.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of simple in structure and flow, Halfsphere-shaped sucking type piezoelectric ultrasonic pump that pressure is bigger are provided.
In order to realize the foregoing invention purpose, the technological scheme of employing is as follows:
A kind of Halfsphere-shaped sucking type piezoelectric ultrasonic pump, comprise pump case, O-ring seal and the driver part formed by chamber groove, cover plate, described driver part places pump case inside, O-ring seal is arranged between the surface of contact of driver part and pump case, chamber groove, driver part and cover plate are by bolton or epoxy bond, described driver part is the piezoelectric element and the half cymbals type metallic elastic body of fitting mutually, and described pump case is provided with water outlet in the position of the flat vertex of a cone of correspondence half cymbals type metallic elastic body.
Piezoelectric element of the present invention is under the signal source excitation of ultrasonic frequency, because inverse piezoelectric effect produces radially slightly ultrasonic vibration, because half cymbals type structure of metallic elastic body, make piezoelectric element radially slightly ultrasonic vibration be converted to the flat vertex of a cone significantly ultrasonic vibration vertically of half cymbals type metallic elastic body, liquid is at this flat vertex of a cone vertically significantly under the driving of ultrasonic vibration, climb along the outlet conduit inwall, realize the driving of fluid.
In order to make technique effect of the present invention more obvious, piezoelectric element of the present invention can adopt following two kinds of structures:
First kind of structure is that described piezoelectric element adopts thin circular shape piezoelectric ceramic, and thin circular shape piezoelectric ceramic polarizes vertically, fits in its ring-like the foundation ring with half cymbals type metallic elastic body.Because the radial vibration of thin circular shape piezoelectric ceramic distortion drives the also radial vibration distortion of foundation ring of half cymbals type metallic elastic body, and because half cymbals type structure of metallic elastic body makes the radial vibration small deformation of foundation ring be converted to the flat vertex of a cone of metallic elastic body big vibration deformation vertically.
In order to reduce driving voltage, described piezoelectric element adopts two or more thin circular shape piezoelectric ceramics of fitting mutually, and the polarised direction of two adjacent thin circular shape piezoelectric ceramics is opposite.
No matter adopt single or multiple thin circular shape piezoelectric ceramics, faying surface between described thin circular shape piezoelectric ceramic and the half cymbals type metallic elastic body, and/or described two or more thin circular shape piezoelectric ceramics faying surface each other, be provided with conducting resinl or epoxy resin, can play the effect of being adhesively fixed on the one hand, also be convenient to conductor mounting on the other hand and connect.
Described thin circular shape piezoelectric ceramic also can radially polarize.
Second kind of structure is that described piezoelectric element adopts thin disc type piezoelectric ceramic, and thin disc type piezoelectric ceramic polarizes vertically, fits in the foundation ring of an one card and half cymbals type metallic elastic body.Thin disc type piezoelectric constant is because the axial vibration small deformation that inverse piezoelectric effect produces is converted to the large deformation vertically of the flat vertex of a cone by half cymbals type metallic elastic body.
In order to reduce driving voltage, described piezoelectric element adopts two or more thin disc type piezoelectric ceramics of fitting mutually, and the polarised direction of two adjacent thin disc type piezoelectric ceramics is opposite.
No matter adopt single or multiple thin disc type piezoelectric ceramics, faying surface between described thin disc type piezoelectric ceramic and the half cymbals type metallic elastic body, and/or described two or more thin disc type piezoelectric ceramics faying surface each other, be provided with conducting resinl or epoxy resin.Can play the effect of being adhesively fixed on the one hand, also be convenient to conductor mounting on the other hand and connect.
The water outlet place of pump case of the present invention is provided with outlet pipe, leaves appropriate gap between the flat vertex of a cone of outlet pipe and half cymbals type metallic elastic body.
Chamber of the present invention groove adopts the cylindric of both ends open, and its cylindrical form interior surface also is provided with the flange of a circle towards the center of circle, driver part is installed in the groove of chamber and its piezoelectric element is adjacent to the flange of chamber groove together with the foundation ring of half cymbals type metallic elastic body, described cover plate is two circular plates with the cylinder end fit of chamber groove, one of them cover plate also compresses piezoelectric element, another cover plate then is provided with the water outlet of placing outlet pipe, and the outlet pipe after placing vertically points to the flat vertex of a cone center of half cymbals type metallic elastic body, and and the flat vertex of a cone between leave appropriate gap.
The upper and lower surface of described thin circular shape piezoelectric ceramic or thin disc type piezoelectric ceramic is welded with lead, and described O-ring seal and cover plate all are provided with the lead drawing-off mouth.
The present invention since adopt half cymbals type metallic elastic body, thin circular shape piezoelectric ceramic or thin disc type piezoelectric ceramic bonding compound be the driver part of one, make the small deformation of radial vibration of piezoelectric ceramic can be exchanged into the large deformation that the flat vertex of a cone of half cymbals type metallic elastic body vibrates vertically, have simple in structure, advantage such as flow is big, pressure is high, reliability is high, frequency of okperation is high, ultrasonic suction, non-electromagnetic field effect, volume are little, meagre type.
Description of drawings
Fig. 1 is a driver part structural representation of the present invention;
Fig. 2 is a structural representation of the present invention.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Structural representation of the present invention as shown in Figure 2, by half cymbals type structure driver part 6, O-ring seal 7, cylinder die cavity groove 4, tighten cover plate 2, fastening cover plate 5 connects as one composition by bolt 3 down, the driver part 6 of half cymbals type structure is installed in the stepped cylinder die cavity groove 4, driver part 6 all is lined with O-ring seal 7 with the surface of contact of chamber groove 4, the center that tightens cover plate 2 is provided with outlet pipe 1, outlet pipe 1 and fastening cover plate 2 are by glueing joint or being welded as a whole, outlet pipe 1 vertically points to the flat vertex of a cone center of half cymbals type metallic elastic body of driver part 6, leaves suitable gap h between the water outlet of outlet pipe 1 and the flat vertex of a cone.Piezoelectric ceramic is a circular ring plate, and at the upper and lower surface welding lead of ceramic plate, O-ring seal 7 and following fastening cover plate 5 all leave endoporus to do the lead drawing-off mouth.
Driver part 6 is as driving source, it is critical component of the present invention, driver part structural representation of the present invention as shown in Figure 1, be sticked to form by thin circular shape piezoelectric ceramic 61 and half cymbals type structural metal elastomer 62, the foundation ring of half cymbals type structural metal elastomer 62 and piezoelectric constant 61 toroidal surfaces are fitted, thin circular shape piezoelectric ceramic 61 polarizes vertically, also can plan vertically, the present invention can adopt the thin circular shape piezoelectric constant of single or multiple lift to be sticked to form the piezoelectric element of driver part, when adopting multi-layer structure, every lamination electroceramic annulus is polarization in the same way vertically, and oppositely pastes according to polarised direction.
The bottom surface of the half cymbals type metallic elastic body 62 that the present invention adopts and ring-like stickup of thin circular shape piezoelectric ceramic 61 form half cymbals type compound body, piezoelectric constant is because the radially small vibration distortion that inverse piezoelectric effect produces, and the metallic elastic body by half cymbals type structure is converted to the flat vertex of a cone of metallic elastic body big vibration deformation vertically.The driver part 6 of half cymbals type compound body converts radially or the axially small deformation of single or multiple lift piezoelectric constant annulus to the half flat vertex of a cone of cymbals type metallic elastic body large deformation vertically, and the water outlet of the flat vertex of a cone of half cymbals type metallic elastic body and outlet pipe 1 leaves suitable gap h, the dither (more than 20 kilo hertzs) of the flat vertex of a cone by half cymbals type metallic elastic body, in the local zonule of the water surface, cause powerful impact force, water " is smashed ", and eject, form water column, tiny outlet pipe road junction is just in the most concentrated center of driver part vibrational energy of half cymbals type structure, and fluid just has enough energy and climbs along inner-walls of duct so.Thereby convection cell is realized the driving of big flow.
The internal structure of piezoelectricity pump chamber groove 4 of the present invention is a cylindrical body, and profile can be prism or cylindrical body.Thin circular shape piezoelectric ceramic 61 adopts when polarizing vertically, upper surface can be used to be connected input lead and ground wire with lower surface, when piezoelectric element adopts multi-layer structure, the common contact area that the multilayer piezoelectric ceramic annulus is all the polarization forward is a signal input part, with metallic elastic body contact area and the common contact area that is all the reversal of polarization be the ground wire of signal input part.Under the effect of alternating electric field, the flat vertex of a cone of the metallic elastic body of half cymbals driver produces more significantly axial vibration, by changing flow and the pressure that frequency of input voltage or amplitude change fluid.
As an embodiment, the present invention has adopted single thin layer circular shape piezoelectric constant and half cymbals type metallic elastic body to constitute half cymbals type driver part of pump, used piezoelectric ceramic is PZT-4, be of a size of φ 40 * φ 20 * 1, adopt conductive adhesive between the piezoelectric ceramic and between piezoelectric constant and the metallic elastic body, the profile of chamber groove is cylinder or prism, be of a size of 50 * 50 * 10, inner chamber is a cylindrical body, is of a size of φ 40 * 2, and outlet pipe is thin cylindrical body.
Claims (10)
1, a kind of Halfsphere-shaped sucking type piezoelectric ultrasonic pump, it is characterized in that comprising pump case, O-ring seal and the driver part of forming by chamber groove, cover plate, described driver part places pump case inside, O-ring seal is arranged between the surface of contact of driver part and pump case, chamber groove, driver part and cover plate are by bolton or epoxy bond, described driver part is the piezoelectric element and the half cymbals type metallic elastic body of fitting mutually, and described pump case is provided with water outlet in the position of the flat vertex of a cone of correspondence half cymbals type metallic elastic body.
2, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 1 is characterized in that described piezoelectric element adopts thin circular shape piezoelectric ceramic, and thin circular shape piezoelectric ceramic polarizes vertically, fits in its ring-like the foundation ring with half cymbals type metallic elastic body.
3, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 2 is characterized in that described piezoelectric element adopts one or mutual two or more thin circular shape piezoelectric ceramics of fitting.
4, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 3, it is characterized in that the faying surface between described thin circular shape piezoelectric ceramic and the half cymbals type metallic elastic body, and/or described two or more thin circular shape piezoelectric ceramics faying surface each other, be provided with conducting resinl or epoxy resin.
5, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 1 is characterized in that described piezoelectric element adopts thin disc type piezoelectric ceramic, and thin disc type piezoelectric ceramic polarizes vertically, fits in the foundation ring of an one card and half cymbals type metallic elastic body.
6, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 5, it is characterized in that described piezoelectric element adopts one or mutual two or more thin disc type piezoelectric ceramics of fitting, and the polarised direction of two adjacent thin disc type piezoelectric ceramics is opposite.
7, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 6, it is characterized in that the faying surface between described thin disc type piezoelectric ceramic and the half cymbals type metallic elastic body, and/or described two or more thin disc type piezoelectric ceramics faying surface each other, be provided with conducting resinl or epoxy resin.
8, according to claim 4 or 7 described Halfsphere-shaped sucking type piezoelectric ultrasonic pumps, it is characterized in that the water outlet place of described pump case is provided with outlet pipe, leave the gap between the flat vertex of a cone of outlet pipe and half cymbals type metallic elastic body.
9, Halfsphere-shaped sucking type piezoelectric ultrasonic pump according to claim 8, it is characterized in that described chamber groove adopts the cylindric of both ends open, and its cylindrical form interior surface also is provided with the flange of a circle towards the center of circle, driver part is installed in the groove of chamber and its piezoelectric element is adjacent to the flange of chamber groove together with the foundation ring of half cymbals type metallic elastic body, described cover plate is two circular plates with the cylinder end fit of chamber groove, one of them cover plate also compresses piezoelectric element, another cover plate then is provided with the water outlet of placing outlet pipe, and the outlet pipe after placing vertically points to the flat vertex of a cone center of half cymbals type metallic elastic body, and and the flat vertex of a cone between leave the gap.
10, according to the described Halfsphere-shaped sucking type piezoelectric ultrasonic pump of claim 9, the inner ring surface and the outer ring surface that it is characterized in that described thin circular shape piezoelectric ceramic are welded with lead, or the upper and lower surface of described thin disc type piezoelectric ceramic is welded with lead, and described O-ring seal and cover plate all are provided with the lead drawing-off mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610132317 CN101000050A (en) | 2006-12-26 | 2006-12-26 | Halfsphere-shaped sucking type piezoelectric ultrasonic pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610132317 CN101000050A (en) | 2006-12-26 | 2006-12-26 | Halfsphere-shaped sucking type piezoelectric ultrasonic pump |
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| Publication Number | Publication Date |
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| CN101000050A true CN101000050A (en) | 2007-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610132317 Pending CN101000050A (en) | 2006-12-26 | 2006-12-26 | Halfsphere-shaped sucking type piezoelectric ultrasonic pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587604A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Patch sandwich bending vibration compound excitation passive jet propulsion device and driving method thereof |
| CN105587626A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof |
| CN105587599A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Longitudinal vibration patch type passive jet propulsion device and driving method thereof |
| CN105983506A (en) * | 2015-01-29 | 2016-10-05 | 北京派和科技股份有限公司 | Piezoelectric injection valve and jet apparatus |
-
2006
- 2006-12-26 CN CN 200610132317 patent/CN101000050A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983506A (en) * | 2015-01-29 | 2016-10-05 | 北京派和科技股份有限公司 | Piezoelectric injection valve and jet apparatus |
| CN105983506B (en) * | 2015-01-29 | 2018-05-18 | 北京派和科技股份有限公司 | Piezo jet valve and injection apparatus |
| CN105587604A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Patch sandwich bending vibration compound excitation passive jet propulsion device and driving method thereof |
| CN105587626A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Sandwich type longitudinal bending complex excitation active water spraying propulsion device and driving method thereof |
| CN105587599A (en) * | 2015-05-08 | 2016-05-18 | 长春工业大学 | Longitudinal vibration patch type passive jet propulsion device and driving method thereof |
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