CN204465383U - A kind of Piezoelectric Ceramic Fan carrying sensing function - Google Patents
A kind of Piezoelectric Ceramic Fan carrying sensing function Download PDFInfo
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- CN204465383U CN204465383U CN201520025624.9U CN201520025624U CN204465383U CN 204465383 U CN204465383 U CN 204465383U CN 201520025624 U CN201520025624 U CN 201520025624U CN 204465383 U CN204465383 U CN 204465383U
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Abstract
The utility model discloses a kind of Piezoelectric Ceramic Fan carrying sensing function, comprise piezoelectric ceramic piece, composite layer, sheet metal and mount pad; Described piezoelectric ceramic piece has 2, according to polarised direction "+,-,+,-" arrangement stick on the corresponding two sides of composite layer; One end of described piezoelectric ceramic piece is connected with sheet metal, and the other end is arranged in mount pad, and the lead-out wire be located on piezoelectric ceramic piece and composite layer is drawn in mount pad; The electrode surface of piezoelectric ceramic positive pole is partitioned into independently two piezoelectric ceramic regions, and one of them is sensor function district, and another uses district for driving.This carries the Piezoelectric Ceramic Fan of sensing function, by detecting, controlling the piezoelectric sensing part in piezoelectric fan assembly, make the resonance frequency of piezoelectric fan assembly consistent with power supply output frequency, to make fan blade reach the maximum amplitude of oscillation, reach best radiating effect.
Description
Technical field
The utility model belongs to piezoelectric ceramic technology field, is specifically related to a kind of Piezoelectric Ceramic Fan carrying sensing function.
Background technology
At present, Piezoelectric Ceramic Fan cooling system is mainly made up of piezoelectric fan blade and piezoelectric fan driving power two large divisions, its operation principle is the inverse piezoelectric effect utilizing piezoelectric ceramic, piezoelectric ceramic is under the effect of electric field, piezoelectric ceramic can produce distortion (generation displacement), apply the alternating voltage of certain frequency, and by mechan-amplifier, finally reach wind direction stablize, at a high speed, can the fan effect of long-term work.By adjusting the conversion frequency of driving power, consistent with the resonance frequency of piezoelectric fan assembly self, make the amplitude of oscillation that fan blade reaches maximum.Along with the long-term work of piezoelectric fan, owing to there is the many factors such as dirt attachment such as piezoelectric self deterioration, operating ambient temperature change, dust, the resonance frequency of piezoelectric fan assembly can be made to change, the output frequency of driving power does not mate with the resonance frequency of piezoelectric fan assembly, the amplitude of oscillation of fan blade can significantly reduce, and does not reach the radiating effect of expection.
Utility model content
Goal of the invention: for the deficiencies in the prior art, the purpose of this utility model is to provide a kind of Piezoelectric Ceramic Fan carrying sensing function, by detecting the output signal of transducing part, the output frequency of adjustment driving power, keeps best fan effect with the moment automatically.
Technical scheme: for achieving the above object, the technical solution adopted in the utility model is as follows:
Carry a Piezoelectric Ceramic Fan for sensing function, comprise piezoelectric ceramic piece, composite layer, sheet metal and mount pad; Described piezoelectric ceramic piece has 2, according to polarised direction "+,-,+,-" arrangement stick on the corresponding two sides of composite layer; One end of described piezoelectric ceramic piece is connected with sheet metal, and the other end is arranged in mount pad, and the lead-out wire be located on piezoelectric ceramic piece and composite layer is drawn in mount pad; The electrode surface of piezoelectric ceramic piece positive pole is partitioned into independently two piezoelectric ceramic regions (also laterally can separate and arrange sensor region), and one of them is sensor function district, and another uses district for driving; The positive pole of described piezoelectric ceramic piece, negative pole and middle conductive composite layer connect "+,-, +/-" port of fans drive power supply respectively.
The signal in described sensor function district changes voltage signal into through modulate circuit, access driving power, and driving power is by detecting the voltage signal of transducing part, and the conversion frequency of adjustment drive circuit, is consistent with the own resonance frequency of piezoelectric fan automatically.
Described piezoelectric ceramic piece is the piezoelectric ceramic that piezoelectric constant d33 is greater than 750.
Described target is the control pole that can switch negative or positive electrode.
Described metal bonding film is at the free end of piezoelectric ceramic piece.
A slice in described 2 piezoelectric ceramic pieces is connected with negative pole, and another sheet is connected with positive pole; Described conducing composite material layer is connected with target.
Beneficial effect: compared with prior art, the Piezoelectric Ceramic Fan carrying sensing function of the present utility model, tool has the following advantages:
(1) Piezoelectric Ceramic Fan carrying sensing function is adopted, by detecting, controlling the piezoelectric sensing part in piezoelectric fan assembly, make the resonance frequency of piezoelectric fan assembly consistent with power supply output frequency, to make fan blade reach the maximum amplitude of oscillation, reach best radiating effect;
(2) piezoelectric ceramic piece is bonded in composite material both sides, not only can reduces piezoelectric ceramic internal stress, improve the pliability of blade, piezoelectric electro pectinid also can be made to reach the best amplitude of oscillation, ensure the optimum efficiency of fan;
(3) use sheet metal as metallic amplifier, its material selection high duty alloy material, has good elasticity, reaches best fan effect.
(4) there is good practicality, can good economic benefit and social effect be produced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Piezoelectric Ceramic Fan carrying sensing function;
Fig. 2 is the Local map of the Piezoelectric Ceramic Fan carrying sensing function.
Embodiment
Illustrate the utility model further below in conjunction with concrete accompanying drawing, this embodiment is implemented under premised on technical solutions of the utility model, should understand these modes and only be not used in restriction scope of the present utility model for illustration of the utility model.
As depicted in figs. 1 and 2, carry the Piezoelectric Ceramic Fan of sensing function, comprise 2 piezoelectric ceramic pieces 1, composite layer 2, sheet metal 3 and mount pad 4; 2 piezoelectric ceramic pieces 1 according to polarised direction "+,-,+,-" arrangement sticks on the corresponding up and down two sides of composite layer 2; Wherein the free end of 1 piezoelectric ceramic piece 1 is connected with sheet metal 3, and the other end is arranged in mount pad 4 together with another sheet piezoelectric ceramic piece 1 and composite layer 2, and the lead-out wire 7 be located on piezoelectric ceramic piece and composite layer is drawn in mount pad 4.A slice in piezoelectric ceramic piece 1 is connected with the negative pole being connected fans drive power supply, another sheet is connected with the positive pole being connected fans drive power supply, composite layer 2 is connected with the target being connected fans drive power supply, this target is the control pole of changeable negative or positive electrode, forms a complete Piezoelectric Ceramic Fan blade.The electrode surface of piezoelectric ceramic positive pole is partitioned into independently two piezoelectric ceramic regions, and one of them is sensor function district 5, and another uses district 6 for driving; The signal in sensor function district 5 by connection to modulate circuit, voltage signal is changed into through modulate circuit, access driving power, driving power is by detecting the voltage signal of transducing part, the conversion frequency of automatic adjustment drive circuit, be consistent with the own resonance frequency of piezoelectric fan, remain that piezoelectric fan deflection amplitude keeps maximum, ensure the optimum efficiency of fan; Use sheet metal as metallic amplifier, its material selection high duty alloy material, has good elasticity, reaches best fan effect.
This carries the Piezoelectric Ceramic Fan of sensing function, fan blade is made up of two panels binary piezoelectric ceramic piece 1, one side bonds polarised direction of composite layer 2 (this composite material can be carbon fiber) is positive high piezoelectric constant (d33 is greater than 750) piezoelectric ceramic, the bonding polarised direction of opposite side is negative high piezoelectric constant (d33 is greater than 750) piezoelectric ceramic, and binary replaces the fan-shaped one-tenth three-decker of piezoelectric electro.Electrode voltage above fan blade is 0 volt, and middle electrode is the control pole of 0/V conversion, and the electrode voltage of below is V volt.It is the inverse piezoelectric effect utilizing piezoelectric ceramic during work, when replacing piezoelectricity electric fan control pole to binary and adding that direct voltage V lies prostrate, the piezoelectric ceramic of top produces the voltage difference of 0 volt and V volt, under electric field action, by the inverse piezoelectric effect of piezoelectric ceramic, the piezoelectric ceramic of top can extend deformation, and because the one end at piezoelectric ceramic two ends is fixed, the other end free end of piezoelectric ceramic will upward deflect.The voltage of the piezoelectric ceramic two end electrodes below opposite side is that V volt and V volt equipotential are in resting state respectively, the piezoelectric ceramic of this side pressure electroceramics and top is bonded on same a slice composite material, and it also can upward deflect to identical direction with the piezoelectric ceramic of energising.When replacing piezoelectricity electric fan control pole to binary and adding direct voltage 0 volt, fan blade yawing moment is just contrary, deflects down.Now the piezoelectric ceramic electrode both end voltage of below is 0 volt and V volt voltage difference respectively, same under the effect of electric field, by the inverse piezoelectric effect of piezoelectric ceramic, the piezoelectric ceramic of below produces extensional, the one end at the two ends of piezoelectric ceramic is fixed, and the other end free end of piezoelectric ceramic will deflect down.And now the voltage at piezoelectric ceramic electrode two ends of top is respectively 0 volt and 0 volt of equipotential is in resting state, this side pressure electroceramics is bonded on same a slice composite material, and it also deflects down to same direction with the piezoelectric ceramic of energising.So the control pole 0 of adjustment piezoelectricity electric fan and the conversion rate of V, piezoelectric ceramic blade deflection speed can be controlled; Control supply power voltage, the amplitude of blade deflection can be controlled.Reach best fan effect, Selective Pressure electroceramics size and metallic amplifier size combine, and at piezoelectric ceramic optimum resonance Frequency point, the effect of fan is also best.
The Piezoelectric Ceramic Fan carrying sensing function of the present utility model, adopt piezoelectric ceramic self be partitioned into one piece independently region as transducing part (also laterally can separate and arrange sensor region), by detecting the signal that transducing part gathers, fan power supply adjusts the output frequency of driving power automatically, keep consistent with the resonance frequency of fan component, make piezoelectric fan blade reach the maximum amplitude of oscillation, ensure the best radiating effect of fan.
Claims (4)
1. carry a Piezoelectric Ceramic Fan for sensing function, it is characterized in that: comprise piezoelectric ceramic piece (1), composite layer (2), sheet metal (3) and mount pad (4); Described piezoelectric ceramic piece (1) has 2, according to polarised direction "+,-,+,-" arrangement stick on the corresponding two sides of composite layer (2); One end of described piezoelectric ceramic piece (1) is connected with sheet metal (3), the other end is arranged in mount pad (4), and the lead-out wire be located on piezoelectric ceramic piece (1) and composite layer (2) is drawn in mount pad (4); The electrode surface of piezoelectric ceramic piece (1) positive pole is partitioned into independently two piezoelectric ceramic regions, and one of them is sensor function district (5), and another uses district (6) for driving; The positive pole of described piezoelectric ceramic piece (1), negative pole and middle conductive composite layer connect "+,-, +/-" port of fans drive power supply respectively.
2. the Piezoelectric Ceramic Fan carrying sensing function according to claim 1, it is characterized in that: the signal in described sensor function district (5) changes voltage signal into through modulate circuit, access driving power, driving power is by detecting the voltage signal of transducing part, the conversion frequency of automatic adjustment drive circuit, is consistent with the own resonance frequency of piezoelectric fan.
3. the Piezoelectric Ceramic Fan carrying sensing function according to claim 1, is characterized in that: described piezoelectric ceramic piece (1) is piezoelectric constant d
33be greater than the piezoelectric ceramic of 750.
4. the Piezoelectric Ceramic Fan carrying sensing function according to claim 1, is characterized in that: described sheet metal (3) is bonded in the free end of piezoelectric ceramic piece (1).
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| CN201520025624.9U CN204465383U (en) | 2015-01-15 | 2015-01-15 | A kind of Piezoelectric Ceramic Fan carrying sensing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601041A (en) * | 2015-01-15 | 2015-05-06 | 江苏联能电子技术有限公司 | Piezoelectric ceramic fan with sensing function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104601041A (en) * | 2015-01-15 | 2015-05-06 | 江苏联能电子技术有限公司 | Piezoelectric ceramic fan with sensing function |
| CN104601041B (en) * | 2015-01-15 | 2017-08-11 | 江苏联能电子技术有限公司 | A kind of Piezoelectric Ceramic Fan for carrying sensing function |
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