CN105240252A - Piezoelectric micro air pump structure - Google Patents
Piezoelectric micro air pump structure Download PDFInfo
- Publication number
- CN105240252A CN105240252A CN201510649212.7A CN201510649212A CN105240252A CN 105240252 A CN105240252 A CN 105240252A CN 201510649212 A CN201510649212 A CN 201510649212A CN 105240252 A CN105240252 A CN 105240252A
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- air
- hole
- air pump
- pedestal
- dunnage
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Abstract
The invention discloses a piezoelectric micro air pump structure which comprises a base. An air outlet is formed in the top of the base. A supporting plate, two layers of overlapped perforated vibrating plates and a silver piece are arranged in a hollow cavity of the base, wherein the two layers of overlapped perforated vibrating plates and the silver piece are located on the supporting plate. Vibrating plate holes which are communicated with one another are formed in the center of each perforated vibrating plate and the center of the silver piece. An air source hole is formed in the center of the supporting plate. The center of the air source hole, the centers of the vibrating plate holes and the center of the air outlet are located on the same axis in the center of the base. According to the piezoelectric micro air pump structure, the silver piece is protected through a shell of the base provided with the hollow cavity, air cavities are formed in the two sides of the silver piece under the action of the shell, the silver piece shrinks in the radial direction due to the counter electricity effect, and the two bonded perforated vibrating plates are driven to shrink in the radial direction to be subjected to bending deformation, the spaces of the air cavities at the two sides of the silver piece are changed, air sucking and air exhausting occur alternately at the air source hole, in this way, the silver piece is protected through the structure, and meanwhile the working efficiency of the micro air pump can be effectively improved. The piezoelectric micro air pump structure is used for the field of piezoelectric devices.
Description
Technical field
The present invention relates to piezoelectric device field, particularly relate to a kind of piezoelectric micromotor air pump structure.
Background technique
Piezoelectricity declines air pump, mainly utilizes the inverse piezoelectric effect of piezoelectric constant, is driven be converted to mechanical deformation by electrical signal, gas volume in confined space is caused to change rapidly, produce high pressure, high velocity air at small air outlet hole, utilize Venturi effect, produce stable air-flow and export.
For the existing piezoelectric micromotor air pump utilizing Venturi effect; silver strip in its device is mostly outside exposed, can not get effective protection in the course of the work, can cause damage; and in air flow source pore, the gas of ejection has certain dissipating effect, can not efficiently spray.
Summary of the invention
For solving the problem, the invention provides a kind of can available protecting silver strip increase the piezoelectric micromotor air pump structure of working efficiency.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of piezoelectric micromotor air pump structure, comprise inside and be provided with hollow cavity and the pedestal of bottom opening setting, the top of pedestal is provided with air outlet hole, the below being positioned at air outlet hole in the hollow cavity of pedestal is provided with the dunnage being erected at pedestal and the vibrating plate two-layer with holes being positioned at the mutual superposition in dunnage and silver strip, the middle part of each vibrating plate with holes and silver strip is provided with the vibration plate hole communicated with each other, the center of dunnage is provided with air source hole, on the same axis being centrally located in the middle part of pedestal of air source hole, vibration plate hole and air outlet hole.
Be further used as the improvement of technical solution of the present invention, be provided with the supporting frame that is parallel to dunnage in pedestal, supporting frame is provided with the support protrusion being supported on dunnage bottom periphery, forms outlet chamber between supporting frame and dunnage.
Be further used as the improvement of technical solution of the present invention, the internal diameter of air source hole is less than the internal diameter of two vibration plate holes, and the two vibration interior exterior features of plate hole become longitudinal section to be U-shaped outgassing groove with the interior profile of air source hole.
Be further used as the improvement of technical solution of the present invention, the bottom of pedestal is provided with bonnet.
Beneficial effect of the present invention: silver strip is protected by the base shell being provided with hollow cavity by this piezoelectric micromotor air pump structure; and air cavity is formed in the both sides of silver strip under the effect of shell; silver strip is due to inverse electrical effect generation radial contraction; the vibrating plate radial contraction with holes that two can be driven to be bonded together causes bending deflection; thus silver strip both sides air cavity spatial variations; air-breathing alternately and exhaust is produced at air source hole place; make this structure while protection silver strip, effectively can improve the working efficiency of micro-air pump.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention overall structure generalized section;
Fig. 2 is embodiment of the present invention overall structure exploded perspective view.
Embodiment
With reference to Fig. 1, Fig. 2, the present invention is a kind of piezoelectric micromotor air pump structure, comprise inside and be provided with hollow cavity and the pedestal 1 of bottom opening setting, the top of pedestal 1 is provided with air outlet hole 2, the below being positioned at air outlet hole 2 in the hollow cavity of pedestal 1 is provided with the dunnage 6 being erected at pedestal 1 and the vibrating plate 4 two-layer with holes being positioned at the mutual superposition in dunnage 6 and silver strip 3, the middle part of each vibrating plate with holes 4 and silver strip 3 is provided with the vibration plate hole 41 communicated with each other, the center of dunnage 6 is provided with air source hole 5, air source hole 5, on the same axis being centrally located in the middle part of pedestal 1 of vibration plate hole 41 and air outlet hole 2.
Silver strip 3 is protected by pedestal 1 shell being provided with hollow cavity by this piezoelectric micromotor air pump structure; and air cavity is formed in the both sides of silver strip 3 under the effect of shell; silver strip 3 is due to inverse electrical effect generation radial contraction; vibrating plate with holes 4 radial contraction that two can be driven to be bonded together causes bending deflection; thus silver strip 3 both sides air cavity spatial variations; produce air-breathing alternately and exhaust at air source hole 5 place, make this structure while protection silver strip 3, effectively can improve the working efficiency of micro-air pump.
As the preferred embodiment of the present invention, be provided with the supporting frame 61 that is parallel to dunnage 6 in pedestal 1, supporting frame 61 is provided with the support protrusion 62 being supported on dunnage 6 bottom periphery, forms outlet chamber 8 between supporting frame 61 and dunnage 6.
As the preferred embodiment of the present invention, the internal diameter of air source hole 5 is less than the internal diameter vibrating plate hole 41 described in two, and the two vibration interior exterior features of plate hole 41 become longitudinal section to be U-shaped outgassing groove with the interior profile of air source hole 5.
As the preferred embodiment of the present invention, the bottom of pedestal 1 is provided with bonnet 7.
After adding the voltage of certain frequency to silver strip 3, due to inverse piezoelectric effect, radial contraction distortion can be produced, because two panels vibrating plate 4 with holes bonds together, radial contraction can become bending deflection, thus cause gas volume change in the space that surrounds between supporting frame 61 and dunnage 6, at air source hole 5, place produces continuous alternating inspiratory and exhaust.
Under effect by gas endoporus on silver strip 3 and two vibrating plates 4 with holes of ejection in air source hole 5, gas direction is concentrated, and is then with moving base 1 to spray from air outlet hole 2 together with the gas in silver strip 3 space.
The internal diameter of the air source hole 5 on the vibration plate hole 41 relative support plate 6 on overlapped two vibrating plates 4 with holes is larger, when being positioned at air source hole 5 air-breathing of bottom, by centered by the vibration plate hole 41 on silver strip 3 and two vibrating plates 4 with holes and longitudinal section is U-shaped hemispherical cavity air inlet, air outlet hole 2 is influenced hardly.
This piezoelectric micromotor air pump structure, under the prerequisite not changing agent structure size, is protected the silver strip 3 as critical piece, simultaneously due to the effect in two vibrating plate 4 upper vibrating plate holes 41 with holes, turn improves exhaust efficiency.
Certainly, the invention is not limited to above-mentioned mode of execution, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (4)
1. a piezoelectric micromotor air pump structure, it is characterized in that: comprise inside and be provided with hollow cavity and the pedestal (1) of bottom opening setting, the top of described pedestal (1) is provided with air outlet hole (2), the below being positioned at air outlet hole (2) in the hollow cavity of described pedestal (1) is provided with the dunnage (6) being erected at pedestal (1) and the vibrating plate two-layer with holes (4) being positioned at the mutual superposition in dunnage (6) and silver strip (3), the middle part of each described vibrating plate with holes (4) and silver strip (3) is provided with the vibration plate hole (41) communicated with each other, the center of described dunnage (6) is provided with air source hole (5), described air source hole (5), on the same axis being centrally located at pedestal (1) middle part of vibration plate hole (41) and air outlet hole (2).
2. piezoelectric micromotor air pump structure according to claim 1, it is characterized in that: in described pedestal (1), be provided with the supporting frame (61) that is parallel to dunnage (6), support frame as described above (61) is provided with the support protrusion (62) being supported on dunnage (6) bottom periphery, forms outlet chamber (8) between support frame as described above (61) and dunnage (6).
3. piezoelectric micromotor air pump structure according to claim 2, it is characterized in that: the internal diameter of described air source hole (5) is less than the internal diameter vibrating plate hole (41) described in two, the interior exterior feature vibrating plate hole (41) described in two becomes longitudinal section to be U-shaped outgassing groove with the interior profile of air source hole (5).
4. piezoelectric micromotor air pump structure according to claim 1 and 2, is characterized in that: the bottom of described pedestal (1) is provided with bonnet (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649212.7A CN105240252B (en) | 2015-10-08 | 2015-10-08 | A kind of piezoelectric micromotor air pump structure |
| PCT/CN2016/076684 WO2017059660A1 (en) | 2015-10-08 | 2016-03-18 | Miniature piezoelectric air pump structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510649212.7A CN105240252B (en) | 2015-10-08 | 2015-10-08 | A kind of piezoelectric micromotor air pump structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105240252A true CN105240252A (en) | 2016-01-13 |
| CN105240252B CN105240252B (en) | 2018-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510649212.7A Active CN105240252B (en) | 2015-10-08 | 2015-10-08 | A kind of piezoelectric micromotor air pump structure |
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| CN (1) | CN105240252B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059660A1 (en) * | 2015-10-08 | 2017-04-13 | 广东奥迪威传感科技股份有限公司 | Miniature piezoelectric air pump structure |
| CN107795466A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | The manufacture method of fluid control device |
| CN107795468A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | The manufacture method of fluid control device |
| CN109424522A (en) * | 2017-08-31 | 2019-03-05 | 研能科技股份有限公司 | Air transporting arrangement |
| CN110513279A (en) * | 2018-05-21 | 2019-11-29 | 研能科技股份有限公司 | Miniature conveying device |
| TWI681121B (en) * | 2018-05-21 | 2020-01-01 | 研能科技股份有限公司 | Micro gas driving apparatus |
| CN112922817A (en) * | 2019-12-06 | 2021-06-08 | 研能科技股份有限公司 | Micro blower |
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| US20030143122A1 (en) * | 2002-01-26 | 2003-07-31 | Dietmar Sander | Piezoelectrically controllable microfluid actor system |
| JP2007092677A (en) * | 2005-09-29 | 2007-04-12 | Casio Comput Co Ltd | Pump device |
| CN103026066A (en) * | 2010-08-09 | 2013-04-03 | 凯希特许有限公司 | System and method for measuring pressure applied by a piezo-electric pump |
| CN203175814U (en) * | 2013-04-14 | 2013-09-04 | 苏州科技学院 | Valveless piezoelectric micro pump |
| CN205064236U (en) * | 2015-10-08 | 2016-03-02 | 广东奥迪威传感科技股份有限公司 | Piezoelectricity micro air pump structure |
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2015
- 2015-10-08 CN CN201510649212.7A patent/CN105240252B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030143122A1 (en) * | 2002-01-26 | 2003-07-31 | Dietmar Sander | Piezoelectrically controllable microfluid actor system |
| JP2007092677A (en) * | 2005-09-29 | 2007-04-12 | Casio Comput Co Ltd | Pump device |
| CN103026066A (en) * | 2010-08-09 | 2013-04-03 | 凯希特许有限公司 | System and method for measuring pressure applied by a piezo-electric pump |
| CN203175814U (en) * | 2013-04-14 | 2013-09-04 | 苏州科技学院 | Valveless piezoelectric micro pump |
| CN205064236U (en) * | 2015-10-08 | 2016-03-02 | 广东奥迪威传感科技股份有限公司 | Piezoelectricity micro air pump structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017059660A1 (en) * | 2015-10-08 | 2017-04-13 | 广东奥迪威传感科技股份有限公司 | Miniature piezoelectric air pump structure |
| CN107795466A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | The manufacture method of fluid control device |
| CN107795468A (en) * | 2016-09-05 | 2018-03-13 | 研能科技股份有限公司 | The manufacture method of fluid control device |
| CN107795468B (en) * | 2016-09-05 | 2020-03-10 | 研能科技股份有限公司 | Method for manufacturing fluid control device |
| CN107795466B (en) * | 2016-09-05 | 2020-03-10 | 研能科技股份有限公司 | Method for manufacturing fluid control device |
| CN109424522A (en) * | 2017-08-31 | 2019-03-05 | 研能科技股份有限公司 | Air transporting arrangement |
| CN110513279A (en) * | 2018-05-21 | 2019-11-29 | 研能科技股份有限公司 | Miniature conveying device |
| TWI681121B (en) * | 2018-05-21 | 2020-01-01 | 研能科技股份有限公司 | Micro gas driving apparatus |
| CN112922817A (en) * | 2019-12-06 | 2021-06-08 | 研能科技股份有限公司 | Micro blower |
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| Publication number | Publication date |
|---|---|
| CN105240252B (en) | 2018-03-02 |
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