CN204663827U - A kind of resonant iris pump driven based on circular piezoelectric twin lamella - Google Patents
A kind of resonant iris pump driven based on circular piezoelectric twin lamella Download PDFInfo
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- CN204663827U CN204663827U CN201520315700.XU CN201520315700U CN204663827U CN 204663827 U CN204663827 U CN 204663827U CN 201520315700 U CN201520315700 U CN 201520315700U CN 204663827 U CN204663827 U CN 204663827U
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- barrier film
- twin lamella
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- circular piezoelectric
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Abstract
The utility model relates to a kind of resonant iris pump driven based on circular piezoelectric twin lamella, it is characterized in that comprising circular piezoelectric twin lamella, mass block, vibration-sensing rod, barrier film, cantilever valve etc., wherein, circular piezoelectric twin lamella periphery suspends, center is fixedly connected with vibration-sensing rod lower end by bolt two, vibration-sensing rod upper end and barrier film pass through epoxy bond, lower shell body one has barrier film mounting groove, barrier film is arranged on barrier film mounting groove, and outlet cantilever valve is communicated with pump chamber and flow path direction is contrary excessively for import cantilever valve.When applying the excitation pulse of sinusoidal alternating to circular piezoelectric twin lamella, piezoelectric bimorph will produce bending deflection, when the frequency of excitation pulse and the fundamental frequency of excitation system is identical or close to time, system resonates, the distortion of piezoelectric bimorph is delivered to barrier film by vibration-sensing rod after being amplified by excitation system, makes barrier film significantly vibration deformation, thus pump chamber is changed, under the alternately cooperation of two cantilever valves, realize the orientation conveying of fluid.
Description
Technical field
The utility model belongs to field of fluid, relates to a kind of resonance drive type piezoelectric fluid feedway, is more particularly a kind of resonant iris pump driven based on circular piezoelectric twin lamella.
Background technique
Piezoelectric pump is a kind of new pump developed in recent years, belongs to a branch of piezoelectric actuator.The compound bending distortion that piezoelectric pump utilizes piezoelectric vibrator to produce, makes the alternately change of pump cavity sum pressure size, under the cooperation of unidirectional stop valve, realizes the orientation movement of fluid.Piezoelectric pump has that volume is little, structure is simple, control easily, without features such as electromagnetic interference.In recent years the application in fields such as medicine bioengineering, fine chemistry industry, Aero-Space, MEMSs is more and more extensive, shows good development prospect.
At present, piezoelectric pump is little at volume, precision is high, respond the direction such as fast good development, at large discharge outbound course, although propose multi-cavity many vibrator types piezoelectric pump, but limited by piezoelectric vibrator self-deformation is little, fallen flat.In addition, the conveying successful of piezoelectric pump to liquid is better than the conveying to gas, because the compression ratio of gas is very large compared to liquid, when piezoelectric pump conveying gas, the variable quantity of volume is used for pressurized gas greatly, thus does not reach desirable transmission effect.During conveying gas, in piezoelectric pump, oscillator also there will be the problems such as heating, easily fragmentation, noise, thus affects the operating life of piezoelectric pump.And to stack in formula piezoelectric resonant pump piezoelectric stack only as excitation source, by the resonator system be made up of spring, mass block, the barrier film acted on fluid is significantly vibrated, thus driving fluid, although this method improves output effect, because piezoelectric stack cost is higher, complex process and be unfavorable for promoting.
The utility model proposes a kind of resonant iris pump driven based on circular piezoelectric twin lamella, this piezoelectric pump, using the circular piezoelectric twin lamella of suspension type as actuating force source, realizes the orientation conveying of fluid under resonance state.
Model utility content
The purpose of this utility model is to propose a kind of resonant iris pump-unit driven based on circular piezoelectric twin lamella, in order to solve the problem that current piezoelectric pump delivery pressure is low, flow is little.
Pump case of the present utility model is made up of upper shell, intermediate, lower shell body one, lower shell body two and lower shell body three, and five are fixedly connected with by bolt one.Intermediate has circular groove, and seal ring is enclosed within intermediate circular groove, and lower shell body one has barrier film mounting groove, and barrier film is arranged on barrier film mounting groove, and the two is clamped in centre barrier film, plays sealing supporting effect.Vibration-sensing rod upper end and barrier film epoxy bond, vibration-sensing rod lower end is fixedly connected with by bolt two with circular piezoelectric twin lamella.Pump chamber is formed by intermediate and barrier film, and outlet cantilever valve is communicated with pump chamber and flow path direction is contrary excessively for import cantilever valve, and import and outlet are on upper shell.When applying the excitation pulse of sinusoidal alternating to circular piezoelectric twin lamella, circular piezoelectric twin lamella will produce bending deflection, when the frequency of excitation pulse and the fundamental frequency of excitation system is identical or close to time, system resonates, the distortion of piezoelectric bimorph is delivered to barrier film by vibration-sensing rod after being amplified by excitation system, makes barrier film significantly vibration deformation, thus pump chamber is changed, under the alternately cooperation of two cantilever valves, realized the orientation conveying of fluid by import and outlet.
The utility model adopts circular piezoelectric twin lamella as actuating force source, wherein, circular piezoelectric twin lamella is made up of circular piezoelectric ceramic plate and circular beryllium bronze sheet, center has through hole, vibration-sensing rod lower end is connected to by bolt two, periphery is suspended state, and periphery is arranged symmetrically with four homolog gauge blocks, is fixedly connected with by bolt three.
The utility model advantage is: using the circular piezoelectric twin lamella of suspension type as actuating force source, under being operated in resonance state, improves the output performance of piezoelectricity diaphragm pump, increases substantially working efficiency, and novel structure, easy to use, be easy to microminiaturized.
Accompanying drawing explanation
Fig. 1 is the utility model resonant iris pump structure schematic diagram;
Fig. 2 is the utility model resonant iris pumping vibrating system structural representation;
Fig. 3 is the utility model circular piezoelectric double wafer structure schematic diagram;
Fig. 4 is the integrally-built plan view of the utility model resonant iris pump.
Embodiment
The embodiment provided below in conjunction with accompanying drawing is further elaborated structure of the present utility model and principle.
With reference to Fig. 1, the resonant iris pump driven based on circular piezoelectric twin lamella described in the utility model comprises bolt 1, upper shell 2, import cantilever valve 3, import 4, intermediate 5, pump chamber 6, barrier film 7, vibration-sensing rod 8, bolt 29, outlet 10, outlet cantilever valve 11, seal ring 12, lower shell body 1, circular piezoelectric ceramic plate 14, bolt 3 15, mass block 16, circular beryllium bronze sheet 17, lower shell body 2 18, lower shell body 3 19.Wherein:
Pump case is by upper shell 2, intermediate 5, lower shell body 1, lower shell body 2 18, this five part of lower shell body 3 19 forms, be fixedly connected with by bolt 1, intermediate 5 has circular groove, seal ring 12 is enclosed within intermediate 5 circular groove, lower shell body 1 has barrier film mounting groove, barrier film 7 is arranged on barrier film mounting groove, seal ring 12 and lower shell body 1 are clamped in centre barrier film 7, play sealing supporting effect, barrier film 7 and intermediate 5 form pump chamber 6, and outlet cantilever valve 11 is communicated with pump chamber 6 and flow path direction is contrary excessively for import cantilever valve 3, import 4 and outlet 10 are positioned on upper shell 2, circular piezoelectric ceramic plate 14 and circular beryllium bronze sheet 17 form circular piezoelectric twin lamella, center has through hole, periphery is arranged symmetrically with four homolog gauge blocks 16, be fixedly connected with by bolt 3 15, vibration-sensing rod 8 lower end has interior threaded hole, circular piezoelectric twin lamella is connected with vibration-sensing rod 8 lower end by bolt 29, vibration-sensing rod 8 upper end and barrier film 7 pass through adhering with epoxy resin.
With reference to Fig. 2, excitation system described in the utility model is made up of barrier film 7, vibration-sensing rod 8, bolt 29, mass block 16, bolt 3 15, circular beryllium bronze sheet 17 and circular piezoelectric ceramic plate 14.
With reference to Fig. 3, circular piezoelectric twin lamella described in the utility model is made up of circular piezoelectric ceramic plate 14 and circular beryllium bronze sheet 17, and center has through hole, and connect for bolt 29, periphery is arranged symmetrically with four through holes, for the mass block 16 such as arranging.
With reference to Fig. 4, the profile of the resonant iris pump based on the driving of circular piezoelectric twin lamella described in the utility model is a cuboid, and plan view is square, and import 4 and outlet 10 are positioned on upper shell 2, and pump case is fixedly connected with by bolt 1.
When applying the excitation pulse of sinusoidal alternating to circular piezoelectric twin lamella, piezoelectric bimorph will produce bending deflection, when the frequency of excitation pulse and the fundamental frequency of excitation system is identical or close to time, system resonates, barrier film 7 is passed to by vibration-sensing rod 8 after the excited system amplification of distortion of piezoelectric bimorph, make barrier film 7 significantly vibration deformation, thus make the volume-variation of pump chamber 6 maximum.Now, the vibration performance of resonant iris pump is optimum, output performance is best.When barrier film 7 is bent downwardly distortion, pump chamber 6 volume increases, and pump chamber internal pressure is less than ambient pressure, and import cantilever valve 3 is opened, and outlet cantilever valve 11 is closed, and fluid flows into pump chamber; When barrier film 7 is bent upwards distortion, pump chamber 6 volume reduces, and pump chamber internal pressure is greater than ambient pressure, and outlet cantilever valve 11 is opened, and import cantilever valve 3 is closed, and fluid flows out pump chamber, thus forms the orientation conveying of fluid.
Claims (2)
1. the resonant iris pump driven based on circular piezoelectric twin lamella, it is characterized in that, comprise bolt one, upper shell, import cantilever valve, import, intermediate, pump chamber, barrier film, vibration-sensing rod, bolt two, outlet, outlet cantilever valve, seal ring, lower shell body one, circular piezoelectric ceramic plate, bolt three, mass block, circular beryllium bronze sheet, lower shell body two, lower shell body three.
2. the resonant iris pump driven based on circular piezoelectric twin lamella according to claim 1, it is characterized in that, circular piezoelectric twin lamella center fixed support, periphery is suspended state, and periphery is arranged symmetrically with four homolog gauge blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315700.XU CN204663827U (en) | 2015-05-12 | 2015-05-12 | A kind of resonant iris pump driven based on circular piezoelectric twin lamella |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520315700.XU CN204663827U (en) | 2015-05-12 | 2015-05-12 | A kind of resonant iris pump driven based on circular piezoelectric twin lamella |
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| Publication Number | Publication Date |
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| CN204663827U true CN204663827U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520315700.XU Expired - Fee Related CN204663827U (en) | 2015-05-12 | 2015-05-12 | A kind of resonant iris pump driven based on circular piezoelectric twin lamella |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822527A (en) * | 2016-03-24 | 2016-08-03 | 北京理工大学 | Multifunctional fluid distribution system driven by piezoelectric ceramic and driving method thereof |
| CN106014940A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Diaphragm pump driven by chip piezoelectric vibrators |
| GB2555198A (en) * | 2016-08-12 | 2018-04-25 | Plan Optik Ag | Micropump |
| CN111779657A (en) * | 2020-06-17 | 2020-10-16 | 长春大学 | Piezoelectric driving type resonance air pump |
| CN112283081A (en) * | 2020-10-16 | 2021-01-29 | 长春工业大学 | Piezoelectric resonance pump with telescopic cavity |
| CN113007077A (en) * | 2020-04-22 | 2021-06-22 | 合肥工业大学 | Array type piezoelectric diaphragm pump |
| CN113162462A (en) * | 2021-04-26 | 2021-07-23 | 合肥工业大学 | Piezoelectric pump driven by piezoelectric composite beam with adjustable resonant frequency |
-
2015
- 2015-05-12 CN CN201520315700.XU patent/CN204663827U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822527A (en) * | 2016-03-24 | 2016-08-03 | 北京理工大学 | Multifunctional fluid distribution system driven by piezoelectric ceramic and driving method thereof |
| CN105822527B (en) * | 2016-03-24 | 2017-12-05 | 北京理工大学 | Utilize the multi-functional fluid distribution system and its driving method of Piezoelectric Ceramic |
| CN106014940A (en) * | 2016-06-15 | 2016-10-12 | 浙江师范大学 | Diaphragm pump driven by chip piezoelectric vibrators |
| GB2555198A (en) * | 2016-08-12 | 2018-04-25 | Plan Optik Ag | Micropump |
| GB2555198B (en) * | 2016-08-12 | 2021-10-27 | Plan Optik Ag | Micro pump and method for manufacturing a micro pump |
| US11174855B2 (en) | 2016-08-12 | 2021-11-16 | Plan Optik Ag | Micro pump and method for manufacturing a micro pump |
| CN113007077A (en) * | 2020-04-22 | 2021-06-22 | 合肥工业大学 | Array type piezoelectric diaphragm pump |
| CN113007077B (en) * | 2020-04-22 | 2022-06-07 | 合肥工业大学 | Array type piezoelectric diaphragm pump |
| CN111779657A (en) * | 2020-06-17 | 2020-10-16 | 长春大学 | Piezoelectric driving type resonance air pump |
| CN112283081A (en) * | 2020-10-16 | 2021-01-29 | 长春工业大学 | Piezoelectric resonance pump with telescopic cavity |
| CN113162462A (en) * | 2021-04-26 | 2021-07-23 | 合肥工业大学 | Piezoelectric pump driven by piezoelectric composite beam with adjustable resonant frequency |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160512 |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Ji Jia Document name: Notification of Termination of Patent Right |