CN208153455U - It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors - Google Patents
It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors Download PDFInfo
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- CN208153455U CN208153455U CN201820316281.5U CN201820316281U CN208153455U CN 208153455 U CN208153455 U CN 208153455U CN 201820316281 U CN201820316281 U CN 201820316281U CN 208153455 U CN208153455 U CN 208153455U
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Abstract
Piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors, including driver ontology, piezoelectric vibration film are utilized the utility model discloses a kind of（5）, cover board（3）, exit slit（4）, igniting anode（1）, cathode of lighting a fire（2）With the external pulse power, the driver body interior includes a cavity, when work, is connected to the positive and negative electrode breakdown atmospherical discharges of driver cavity two sides, the intracorporal gas of discharge cavity is by transient heating, and the interior high pressure plasma formed of driver cavity is in piezoelectric vibration film（5）Compound action under pass through exit slit（4）It is sprayed from the opening high-speed on cover board, forms high-speed jet.Solve piezoelectric vibration formula driver form that effluxvelocity is too low and high-frequency plasma synthesizing jet-flow excitor be easy to cause intra-cavity energy accumulation cause the excessively high even more than material of temperature to greatest extent the problems such as, not only synthesizing jet-flow speed can be improved but also effectively reduced cavity temperature, the backfill rate for increasing gas simultaneously, improves the utilization efficiency of energy.
Description
Technical field
The utility model relates to quick response flowing control field more particularly to a kind of utilization piezoelectric vibration films and two electricity
Pole plasma combined type synthesizing jet-flow excitor.
Background technique
The synthesizing jet-flow of early stage is to utilize the thin vibration of membrane of synthesizing jet-flow excitor cavity internal vibration（Such as piezoelectricity, ferroelectricity, electricity
Magnetic and the driving of electrostatic or piston）, generate at driver outlet opening/seam successively to a series of unsteady collar vortexs of extension
（Or vortex pair）, to generate expected influence to main flow direction.The characteristics of synthesizing jet-flow technology, does not need to introduce additional
Quality, but the jet stream of the fluid synthesis of in flow field itself is utilized, referred to as " zero-net-mass-flux jet ".Blending in gas enhances, stream
Dynamic control, Micropump, the fields such as vector controlled have unique advantage, therefore have boundless application prospect.
Johns Hopkins University of U.S. Experiment of Applied Physics room proposed that a kind of plasma synthesis jet stream swashs in 2003
Device is encouraged as a kind of novel flow control technique.The driver is by table on the dielectric chamber and cavity of the built-in marking and anode
The flow-out hole in face stitches composition.The working principle of the plasma synthesis jet-flow excitor：Anode and cathode respectively with high-voltage pulse
The positive and negative anodes of power supply are connected.When power supply operation, the intracorporal air of chamber breakdown formation high temperature and pressure due to electrode discharge
Plasma, high-temperature high-pressure air flow is through flow-out hole/slit at high-speed jet.The technology is not necessarily to additional mass input, has and rings
Should be fast, working band is wide, light weight, advantages of simple structure and simple, becomes current active Flow Control field people and falls over each other research
Hot spot.
But presently, there are synthesizing jet-flow energy accumulation excessively will cause the excessively high problem of temperature and energy can not be improved
The problem of utilization efficiency and increase air backfill rate.
Utility model content
Technical problem to be solved in the utility model is, for the deficiency of known technology, proposes that a kind of utilization piezoelectricity shakes
Dynamic film and two electrode plasma combined type synthesizing jet-flow excitors.The driver can solve energy accumulation and excessively cause temperature
High problem is spent, while capacity usage ratio can be improved and increase air backfill rate.It, can be according to practical need when using the device
Will be to working frequency, outlet shapes, the parameters such as cavity size are regulated and controled, and use needs to meet.
Realize the utility model aim technical solution be：It is a kind of to utilize piezoelectric vibration film and two electrode plasmas
Body combined type synthesizing jet-flow excitor, including driver ontology, piezoelectric vibration film, cover board, jet exit stitch, igniting is positive,
Igniting cathode and the external pulse power, the driver body interior include a cavity, and the piezoelectric vibration film is arranged in institute
The bottom of cavity is stated, the igniting anode and igniting cathode are embedded in cavity from the two sides of the driver ontology respectively, described
The top of the driver ontology is arranged in cover board, and the cover board includes an opening, and the jet exit, which seams, to be set in the chamber
Between body and the cover board, the outlet of jet exit seam is with the open butt joint of the cover board so that the cavity and outer
Boundary's connection.
Further, the jet exit seam is in straight-through tubular or flaring tubular or Rafael nozzle shape or cuboid
Shape.
Further, the cover board and piezoelectric vibration film pass through elevated-temperature seal glue respectively and are connected to driver cavity
Bottom and driver bodies top, the driver ontology are cuboid
Further, the generation of the synthesizing jet-flow is from the thin vibration of membrane of piezoelectric vibration and two electrode plasmas
Combination of stimulation.
Further, the vibrational excitation frequency of the piezoelectric vibration film is 100Hz to 1000Hz, two electrode discharge frequencies
For 1000Hz to 10000Hz, pulse power voltage peak is not less than 20KV.
Further, the igniting anode, igniting cathode are symmetrically distributed in driver cavity two sides middle position, two electrodes
Tip keeps suitable distance to achieve the purpose that spark discharge.
Further, the outlet of the jet exit seam and the opening shape of the cover board match.
Further, the driver cavity is cuboid, and length 20mm, width 5mm are highly 20mm.
Further, the opening of the cover board is long 10mm, the rectangle of wide 1mm.
Further, the igniting anode and igniting cathode are all made of the alloy production of depressed place or tungsten.
Compared with the existing technology, the utility model is a kind of is closed using piezoelectric vibration film and two electrode plasma combined types
At having the beneficial effect that for jet-flow excitor：Different openings can be selected using disconnectable cover-plate type combination according to actual needs
Or seam cover board and achieve the purpose that flexibly to use.It is synthesized simultaneously using piezoelectric vibration film and two electrode plasma combined types
Jet-flow excitor can learn from other's strong points to offset one's weaknesses, and solve the problems, such as the problem that cavity temperature is excessively high and conventional driver device speed is too low, this
Utility model be not simply by two kinds of working method simple superposition, but find two kinds of individual operating modes exist
The creative improvement carried out on the basis of defect and problem, overcomes single mould simultaneously after organically combining two ways
The problem of formula, makes the technical effect of the utility model obtain leaping for matter, can obtain the effect of two kinds of single-modes
It is better able on the basis of superposition so that system whole work efficiency improves arousal effect promotion and system does not need to bear yet
The risk of high pressure, two kinds of operating mode coordinateds achieve the effect and promotion of substance outstanding.
Other than objects, features and advantages described above, there are also other purposes, feature and excellent for the utility model
Point.Below with reference to accompanying drawings, the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the utility model driver three-dimensional figure.
Fig. 2 is the utility model driver partial top view.
Specific embodiment
With reference to the accompanying drawings of the specification, the utility model is further described.
Referring to attached drawing 1-2, the utility model is a kind of to be synthesized using piezoelectric vibration film and two electrode plasma combined types
The embodiment of jet-flow excitor.Including rectangle driver ontology, piezoelectric vibration film 5, cover board 3, exit slit 4, igniting is just
Pole 1, light a fire cathode 2 and the external pulse power（It is not shown）.The driver ontology includes driver cavity, driver ontology two
The through-hole that it is 2mm through the diameter of the driver ontology that side, which is equipped with, matches with two electrode sizes.The length of the driver cavity
It is highly 20mm for 20mm, width 5mm.The driver cavity and cover board select good insulating, machinable boron nitride pottery
Porcelain production, the size of cover board are matched with the size of driver bodies top, and thick 3mm, bottom piezoelectric vibration film can
Using elastic material, flexible material or composite material, size are matched with driver cavity bottom size.Institute on cover board
Open jet exit, long 10mm, wide 1mm.Exit slit 4 can be straight-through tubular or tapered tubular or Rafael nozzle shape or length
Cube shape.Coaxial line pastes connection by the way of elevated-temperature seal glue between cover board and driver ontology.Two electrodes are symmetrical
It is distributed in driver ontology two sides middle position, is all made of the alloy production of depressed place or tungsten, with high warm between two electrodes and ontology
Gluing connects.
In piezoelectric film vibration and two electrode plasma combined type synthesizing jet-flow excitors in use, there is two sets of power supply systems
System, it is a set of for generating the high-voltage pulse power source of two electrode plasmas, it is another set of for generating the excitation of piezoelectric diaphragm vibration
Pulse.The former pulse power voltage peak is not less than 20KV, and maximum modulating frequency cannot be less than 1000Hz, be between guarantee electrode
Spark discharge is not glow discharge, and the latter's maximum modulating frequency cannot be less than 500Hz.
The course of work and principle of the piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors：It connects
Logical external pulse power-supply system is punctured empty by the potential difference of the igniting anode and igniting cathode that are connected to driver cavity both ends
Gas electric discharge, in the intracavitary plasma for forming high temperature and pressure, while the vibration film of bottom is vibrated with certain driving frequency.?
Intracavitary plasma is passed through into exit slit and cover board under driver cavity internal and external pressure difference and the collective effect of vibrating diaphragm
On opening discharge, form the synthesizing jet-flow of high speed.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors, it is characterised in that including
Driver ontology, piezoelectric vibration film（5）, cover board（3）, jet exit seam（4）, igniting anode（1）, igniting cathode（2）With it is outer
The pulse power is connect, the driver body interior includes a cavity, the piezoelectric vibration film（5）The bottom of the cavity is set
Portion, the igniting anode（1）With igniting cathode（2）Respectively out of the insertion of the two sides of the driver ontology cavity, the cover board
（3）The top of the driver ontology, the cover board are set（3）Including an opening, the jet exit seam（4）Setting is in institute
State cavity and the cover board（3）Between, the jet exit seam（4）Outlet and the cover board（3）Open butt joint to making
Obtain the cavity and extraneous connection.
2. driver according to claim 1, it is characterised in that：The jet exit seam（4）In straight-through tubular or gradually
Expand tubular or Rafael nozzle shape or cuboid.
3. driver according to claim 1, it is characterised in that：The cover board（3）With piezoelectric vibration film（5）Lead to respectively
It crosses high-temperature seal adhesive stickup and is connected to driver cavity bottom and driver bodies top.
4. driver according to claim 1-3, it is characterised in that：The driver ontology is cuboid.
5. driver according to claim 1-3, it is characterised in that：The piezoelectric vibration film（5）Vibration
Driving frequency is 100Hz to 1000Hz, and two electrode discharge frequencies are 1000Hz to 10000Hz, and the voltage peak of the pulse power is not
Less than 20KV.
6. driver according to claim 1-3, it is characterised in that：The igniting anode（1）, igniting cathode
（2）It is symmetrically distributed in driver ontology two sides middle position, two eletrode tips keep suitable distance to reach spark discharge
Purpose.
7. driver according to claim 1-3, it is characterised in that：The jet exit seam（4）Outlet with
The cover board（3）Opening shape match.
8. driver according to claim 4, it is characterised in that：The driver cavity is cuboid, and length is
20mm, width 5mm are highly 20mm.
9. driver according to claim 8, it is characterised in that：The cover board（3）Opening be long 10mm, wide 1mm's
Rectangle.
10. driver according to claim 1-3, it is characterised in that：The igniting anode（1）With igniting cathode
（2）It is all made of the alloy production of depressed place or tungsten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820316281.5U CN208153455U (en) | 2018-03-08 | 2018-03-08 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820316281.5U CN208153455U (en) | 2018-03-08 | 2018-03-08 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
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| CN208153455U true CN208153455U (en) | 2018-11-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223500A (en) * | 2018-03-08 | 2018-06-29 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
| CN112050854A (en) * | 2020-09-02 | 2020-12-08 | 中北大学 | Impact jet flow pressure vibration composite measurement device and impact jet flow pressure vibration composite measurement method |
-
2018
- 2018-03-08 CN CN201820316281.5U patent/CN208153455U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223500A (en) * | 2018-03-08 | 2018-06-29 | 南京理工大学 | It is a kind of to utilize piezoelectric vibration film and two electrode plasma combined type synthesizing jet-flow excitors |
| CN112050854A (en) * | 2020-09-02 | 2020-12-08 | 中北大学 | Impact jet flow pressure vibration composite measurement device and impact jet flow pressure vibration composite measurement method |
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