CN205001228U - Mounting structure of piezoelectric fan - Google Patents
Mounting structure of piezoelectric fan Download PDFInfo
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- CN205001228U CN205001228U CN201520711263.3U CN201520711263U CN205001228U CN 205001228 U CN205001228 U CN 205001228U CN 201520711263 U CN201520711263 U CN 201520711263U CN 205001228 U CN205001228 U CN 205001228U
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Abstract
The utility model discloses a mounting structure of piezoelectric fan, including piezoceramics piece, combined material layer and installation base, the upper and lower corresponding two sides on combined material layer on all be equipped with the piezoceramics piece, the combined material layer includes expansion end and stiff end, and the stiff end is directly established in the installation base, the piezoceramics piece is not direct to link to each other with the installation base. The utility model discloses a mounting structure of piezoelectric fan, middle combined material are the structure support point of fan, have both increased structural drift, increase the deflection range of fan, utilize combined material's high strength, high elasticity simultaneously, bear fan high frequency wobbling stress, greatly promote the life of fan.
Description
Technical field
The utility model belongs to piezoelectricity electric fan technical field, is specifically related to a kind of mounting structure of piezoelectric fan.
Background technique
At present, piezoelectricity electric fan main structural components is made up of piezoelectric fan blade and piezoelectric fan power source driving two large divisions, its working principle is that piezoelectric constant is under the effect of electric field, utilize the piezoelectric property that piezoelectric constant is exclusive, namely utilize the inverse piezoelectric effect of piezoelectric constant, when being energized, piezoelectric constant can produce vibration and displacement, and by mechanical transmission, finally reach wind direction stablize, at a high speed, can the good cooling-down effect of long-term work.Existing fan blade forms by ceramic plate is bonding, and drives with Ac, and work reaching under piezoelectric ceramic point of resonance for a long time, piezoelectric constant is very tired, and be easy to produce cracked, the life-span is very short, can't meet user demand completely.Meanwhile, piezoelectric constant local is encapsulated in base, and fan Root Stress is born by piezoelectric constant, and long-time, high frequency time work can make piezoelectric constant rupture, and lose efficacy gradually.
Model utility content
Goal of the invention: for the deficiencies in the prior art, the purpose of this utility model is to provide a kind of mounting structure of piezoelectric fan, mounting base is only connected with composite layer, increases the free length on fan structure and deflection amplitude, improves its operating life.
Technological scheme: for achieving the above object, the technical solution adopted in the utility model is as follows:
A mounting structure for piezoelectric fan, comprises piezoelectric ceramic, composite layer and mounting base; The corresponding up and down two sides of described composite layer is equipped with piezoelectric ceramic, and described composite layer comprises movable end and fixed end, and fixed end is directly arranged in mounting base, and described piezoelectric ceramic is not directly connected with mounting base.
The mounting structure of described piezoelectric fan, the corresponding up and down two sides of described composite layer is respectively provided with 1 piezoelectric ceramic, the polar orientation of upper and lower 2 piezoelectric ceramics is+,-,-,+, described piezoelectric ceramic is connected with power supply, composite layer ground connection.
The mounting structure of described piezoelectric fan, the corresponding up and down two sides of described composite layer is respectively provided with 1 piezoelectric ceramic, the polar orientation of upper and lower 2 piezoelectric ceramics is-,+,+,-, described piezoelectric ceramic is connected with power supply, and composite layer meets V+.
The mounting structure of described piezoelectric fan, described piezoelectric ceramic has more than 3, the top and bottom of every sheet piezoelectric ceramic are polarized to both positive and negative polarity respectively, each piezoelectric ceramic superposes connection successively, the surface of contact polarity of the piezoelectric ceramic of adjacent two panels is identical, between the surface of contact that polarity is identical, establish electrode conductor introduction, electrode conductor introduction is connected with wire; Composite layer is established to replace electrode conductor introduction between the surface of contact that polarity is identical wherein.
The mounting structure of described piezoelectric fan, composite layer is located between two piezoelectric ceramic surface of contact being positive pole, and composite layer ground connection, the free end of composite layer extends into the blade of fan.
The mounting structure of described piezoelectric fan, composite layer is located between two piezoelectric ceramic surface of contact being negative pole, and composite layer connects positive source, establishes blade at the free end of composite layer.
The mounting structure of described piezoelectric fan, described composite layer stretches out into free end from piezoelectric ceramic top, forms blade.
The mounting structure of described piezoelectric fan, establishes blade at the free end of described piezoelectric constant.
The mounting structure of described piezoelectric fan, described composite layer is carbon fiber layer or tinsel.
Beneficial effect: compared with prior art, the mounting structure of piezoelectric fan of the present utility model, intermediate composite is the support structure point of fan, both structural free length had been added, increase the deflection amplitude of fan, utilize the high strength of composite material, high elasticity simultaneously, bear the stress of fan swing in high frequency, greatly promote the working life of fan.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mounting structure of the first piezoelectric fan;
Fig. 2 is the structural representation of the mounting structure of the second piezoelectric fan;
Fig. 3 is the structural representation of the mounting structure of the third piezoelectric fan;
Fig. 4 is the structural representation of the mounting structure of the 4th kind of piezoelectric fan;
Fig. 5 is the structural representation of the mounting structure of the 5th kind of piezoelectric fan.
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.
The mounting structure of piezoelectric fan, comprises piezoelectric ceramic 1, composite layer 2 and mounting base 4; Piezoelectric ceramic 1 is established on the corresponding up and down two sides of composite layer 2, composite layer 2 comprises movable end and fixed end, fixed end is directly installed in mounting base 4, now piezoelectric ceramic 1 is not arranged in mounting base 4, directly do not contact with mounting base 4, composite layer 2 movable end can directly extend into blade 3, suitable Placement also can be adopted to connect blade 3.Wherein, composite material can be carbon fiber or metal, and piezoelectric ceramic is high piezoelectric constant (d33 is greater than 650pC/N) piezoelectric constant.
As shown in Figure 1,2 piezoelectric ceramic 1 polarity according to "+,-,-,+" arrangement, form three-decker.Top piezoelectric ceramic 1 and below piezoelectric ceramic 1 are powered V+ in turn, target (composite layer 2) ground connection (0 volt).The inverse piezoelectric effect of piezoelectric constant is utilized during work, when adding VDC V+ to top piezoelectric ceramic, the piezoelectric ceramic of below connects 0 volt or disconnection, under electric field action, by the inverse piezoelectric effect of piezoelectric constant, the piezoelectric constant sector-meeting of top extends deformation, and because the one end at piezoelectric ceramic two ends is fixed by composite layer, the other end free end of piezoelectric ceramic will upward deflect.The voltage of the piezoelectric ceramic two end electrodes below opposite side is 0 volt or disconnection, be in off position, the piezoelectric ceramic of this side piezoelectric ceramic and top is bonded on same a slice composite material, and it also can deflect to identical direction with the piezoelectric ceramic of energising.When adding VDC V+ to the piezoelectric ceramic of below, the piezoelectric ceramic of top connects 0 volt or disconnection, and fan blade deflection direction is contrary, deflects down.Now the piezoelectric constant plate electrode both end voltage of top is 0 volt, is in off position, and the ceramic plate of following below down deflects.The conversion rate that the both sides piezoelectric ceramic adjusting piezoelectricity electric fan is energized respectively, can control blade deflection speed; Control power supply voltage size, the amplitude of blade deflection can be controlled.Reach best fan effect, Selective Pressure electroceramic chip size size and blade (metallic amplifier) size combine, and select the conversion frequency of driving power consistent with self resonant frequency of piezoelectricity electric fan, and the effect of fan is also best.
As shown in Figure 2,2 piezoelectric ceramic polarity according to "-,+,+,-" arrangement, formed three-decker.Top piezoelectric ceramic 1 and below piezoelectric ceramic 1 ground connection or disconnection in turn, target meets V+.The inverse piezoelectric effect of piezoelectric constant is utilized during work, when giving top piezoelectric ceramic ground connection (0 volt), the piezoelectric ceramic wiring of below disconnects, under electric field action, by the inverse piezoelectric effect of piezoelectric constant, the piezoelectric constant sector-meeting of top extends deformation, and because the one end at piezoelectric ceramic two ends is fixed by composite layer, the other end free end of piezoelectric ceramic will upward deflect.The piezoelectric ceramic two end electrodes open circuit of below, be in off position, the piezoelectric ceramic of this side piezoelectric ceramic and top is bonded on same a slice composite material, and it also can deflect to identical direction with the piezoelectric ceramic of energising.When giving piezoelectric constant ground connection (0 volt) of below, the piezoelectric ceramic wiring of top disconnects, and fan blade deflection direction is contrary, deflects down.Now the piezoelectric constant plate electrode two ends of top are open circuits, are in off position, and the ceramic plate of following below down deflects.
As shown in Figure 3, piezoelectric ceramic polarity according to "-,+,+,-" arrangement, formed three-decker.The top of fan blade piezoelectric constant and below ground connection or meet V+ in turn, target meets V+.The inverse piezoelectric effect of piezoelectric constant is utilized during work, when giving top piezoelectric ceramic ground connection (0 volt), the piezoelectric ceramic of below meets V+, under electric field action, by the inverse piezoelectric effect of piezoelectric constant, the piezoelectric constant sector-meeting of top extends deformation, and because the one end at piezoelectric ceramic two ends is fixed by composite layer, the other end free end of piezoelectric ceramic will upward deflect.The piezoelectric ceramic two end electrodes equipotential of below, be in off position, the piezoelectric ceramic of this side piezoelectric ceramic and top is bonded on same a slice composite material, and it also can deflect to identical direction with the piezoelectric ceramic of energising.When giving piezoelectric constant ground connection (0 volt) of below, the piezoelectric ceramic wiring of top meets V+, and fan blade deflection direction is contrary, deflects down.Now the piezoelectric constant plate electrode two ends equipotential of top, is in off position, and the ceramic plate of following below down deflects.
Binary alternation piezoelectricity electric fan of the present invention, adopts binary alternation, makes piezoelectric ceramic have half the time to have a rest, and reduces the overtired of piezoelectric ceramic, greatly improves its operating life; Piezoelectric ceramic is bonded in composite material both sides, not only can reduces piezoelectric constant 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; Use tinsel as metallic amplifier, its material selection high duty alloy material, has good elasticity, reaches best fan effect.
In addition, adopt above-mentioned several piezoelectric ceramic arrangement mode and driving mode, when composite layer (target) ground connection, not charged, can directly use the composite material of conduction (can be carbon fiber) or tinsel to do mesosphere, and blade amplification is played in extension.As shown in Figure 3, the link of other bonded metal blade is decreased.Except this kind of situation, preferably on the movable end of composite layer, by linkage structure 5, blade 3 is set, linkage structure can make directly to be bonded on arbitrary piezoelectric ceramic, blade 3 can be stablized by support, routine such as bonding frame, fixing frame etc. or not conventional Placement and be connected on the movable end of composite layer.
In the mounting structure of this piezoelectric fan, piezoelectric ceramic can have more than 3, when have 3 with last piezoelectric ceramic time, the top and bottom of every sheet piezoelectric ceramic are polarized to both positive and negative polarity respectively, each piezoelectric ceramic superposes connection successively, the surface of contact polarity of the piezoelectric ceramic of adjacent two panels is identical, and between the surface of contact that polarity is identical, establish electrode conductor introduction, electrode conductor introduction is connected with wire; Composite layer is established to replace electrode conductor introduction between the surface of contact that polarity is identical wherein.Other structures are all corresponding identical with above-mentioned.
The mounting structure of piezoelectric fan of the present utility model, intermediate composite is the support structure point of fan, both structural free length had been added, increase the deflection amplitude of fan, utilize the high strength of composite material, high elasticity simultaneously, bear the stress of fan swing in high frequency, greatly promote the working life of fan.
Claims (9)
1. a mounting structure for piezoelectric fan, comprises piezoelectric ceramic (1), composite layer (2) and mounting base (4); It is characterized in that: on the corresponding up and down two sides of described composite layer (2), be equipped with piezoelectric ceramic (1), described composite layer (2) comprises movable end and fixed end, fixed end is directly arranged in mounting base (4), and described piezoelectric ceramic (1) is not directly connected with mounting base (4).
2. the mounting structure of piezoelectric fan according to claim 1, it is characterized in that: on the corresponding up and down two sides of described composite layer (2), be respectively provided with 1 piezoelectric ceramic (1), the polar orientation of upper and lower 2 piezoelectric ceramics (1) is+,-,-,+, described piezoelectric ceramic (1) is connected with power supply, composite layer (2) ground connection.
3. the mounting structure of piezoelectric fan according to claim 1, is characterized in that:; It is characterized in that: on the corresponding up and down two sides of described composite layer (2), be respectively provided with 1 piezoelectric ceramic (1), the polar orientation of upper and lower 2 piezoelectric ceramics (1) is-,+,+,-, described piezoelectric ceramic (1) is connected with power supply, and composite layer (2) meets V+.
4. the mounting structure of piezoelectric fan according to claim 1, it is characterized in that: described piezoelectric ceramic (1) has more than 3, the top and bottom of every sheet piezoelectric ceramic (1) are polarized to both positive and negative polarity respectively, each piezoelectric ceramic (1) superposes connection successively, the surface of contact polarity of the piezoelectric ceramic (1) of adjacent two panels is identical, between the surface of contact that polarity is identical, establish electrode conductor introduction, electrode conductor introduction is connected with wire; Composite layer (2) is established to replace electrode conductor introduction between the surface of contact that polarity is identical wherein.
5. the mounting structure of piezoelectric fan according to claim 4, it is characterized in that: composite layer (2) is located between two piezoelectric ceramic (1) surface of contact being positive pole, composite layer (2) ground connection, the free end of composite layer (2) extends into the blade (3) of fan.
6. the mounting structure of piezoelectric fan according to claim 4, it is characterized in that: composite layer (2) is located between two piezoelectric ceramic (1) surface of contact being negative pole, composite layer (2) connects positive source, establishes blade (3) at the free end of composite layer (2).
7. the mounting structure of piezoelectric fan according to claim 2, is characterized in that: described composite layer (2) stretches out into free end from piezoelectric ceramic (1) top, forms blade (3).
8. the mounting structure of piezoelectric fan according to claim 3, is characterized in that: establish blade (3) at the free end of described piezoelectric constant (1).
9. the mounting structure of piezoelectric fan according to claim 1, is characterized in that: described composite layer (2) is carbon fiber layer or tinsel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711263.3U CN205001228U (en) | 2015-09-15 | 2015-09-15 | Mounting structure of piezoelectric fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711263.3U CN205001228U (en) | 2015-09-15 | 2015-09-15 | Mounting structure of piezoelectric fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205001228U true CN205001228U (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520711263.3U Active CN205001228U (en) | 2015-09-15 | 2015-09-15 | Mounting structure of piezoelectric fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205001228U (en) |
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2015
- 2015-09-15 CN CN201520711263.3U patent/CN205001228U/en active Active
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Address after: Room 9a, No.158 Yongjia Road, Xuhui District, Shanghai Patentee after: Yang Jie Address before: 225000 No. 42 Port Road, Hanjiang District, Jiangsu, Yangzhou Patentee before: Yang Jie |