CN107769612B - A kind of raising frequency piezoelectricity-Electromagnetic heating power generator under vortex street excitation - Google Patents
A kind of raising frequency piezoelectricity-Electromagnetic heating power generator under vortex street excitation Download PDFInfo
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- CN107769612B CN107769612B CN201711047019.1A CN201711047019A CN107769612B CN 107769612 B CN107769612 B CN 107769612B CN 201711047019 A CN201711047019 A CN 201711047019A CN 107769612 B CN107769612 B CN 107769612B
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- 230000005284 excitation Effects 0.000 title claims abstract description 36
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- 239000000758 substrate Substances 0.000 claims description 67
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- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
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- 238000003306 harvesting Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 8
- 229920000647 polyepoxide Polymers 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000010248 power generation Methods 0.000 description 4
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/185—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators using fluid streams
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K35/00—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit
- H02K35/02—Generators with reciprocating, oscillating or vibrating coil system, magnet, armature or other part of the magnetic circuit with moving magnets and stationary coil systems
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
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Abstract
It is narrow for prisoner's energy frequency band for solving the pneumatic piezoelectric generator of current linear the invention discloses raising frequency piezoelectricity-Electromagnetic heating power generator that a kind of excitation of vortex street is lower, it is only capable of under resonant frequency efficient power harvesting and the low limitation of energy density.The present invention includes that rectangle holds air cavity, vortex street exciting bank, limit shaft and square coil, and vortex street exciting bank and limit shaft are mounted on that rectangular vessel is intracavitary, and square coil is bonded in the intracavitary rear end of rectangular vessel.Vortex street exciting bank carries out high-frequency vibration under low-frequency high-voltage exciting gas, and the magnet cutting square coil of end realizes Electromagnetic generation；Vortex street exciting bank collides with limit shaft during the motion simultaneously, so that its cantilever beam generates deformation, realizes piezo-electric generating.The present invention improves the vibration frequency of piezoelectric element and magnet using cylinder flow-disturbing effect, and piezo-electric generating is combined with Electromagnetic generation, and the prisoner's energy bandwidth for having widened power generator improves energy density, has broad application prospects in pneumatics field.
Description
Technical field
The present invention relates to raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of excitation of vortex street, belong to pneumatics field.
Background technique
With the continuous improvement that intelligent manufacturing equipment intelligent level requires, wireless sensor technology and pneumatics are carried out
A large amount of wireless sensors are applied to pneumatic system by deeply fusion, are to realize to complete self-test and the perception certainly of pneumatic system
The intelligentized important means of pneumatic system.Continuing reliably to energize for wireless sensors a large amount of in pneumatic system is to guarantee that it is normal
The premise of work, mainly based on direct battery power, battery exists the energy-provision way of wireless sensor in pneumatic system
The problems such as service life is limited, replacement is frequent and pollution environment.How to solve to supply using power supply centrally connected power supply and chemical cell
Electromagnetic interference existing for electric mode is serious, system wiring is complicated, not convenient for safeguarding and service life is short, pollution environment etc. is many asks
Topic becomes the key technique for restricting pneumatic system intelligent development.
Micro- energy is subjected to electric energy conversion and is stored in battery the service life that can effectively extend battery.In crowd
More prisoner can be in principle, and piezoelectricity and electromagnetic conversion mechanism are due to its higher electromechanical coupling factor and do not need external voltage source etc.
Feature receives more and more extensive concern.Simultaneously in order to meet pneumatic system energy-saving, environmental protection, green, sustainable development row
Industry growth requirement, it is horizontal to have already decreased to milliwatt even microwatt level for many wireless sensor power consumptions in pneumatic system.Therefore, it utilizes
Piezoelectric material carries out electric energy conversion to pneumatic system self-energy, and passes through rectification circuit for power storage in battery, is expected to
A kind of novel energy-storage method as increasing storage battery service life.
The generated energy of prisoner's energy device, energy conversion efficiency and output power are still extremely limited at present.Current linear gas
Prisoner's energy frequency band of dynamic piezoelectric generating device is narrow, is only capable of having high electromechanical conversion efficiency and energy density at the resonant frequency fx
It is low, however its resonance frequency is higher, and the frequency of pneumatic system pressure variation is lower.Electromagnetic generation energy transfer efficiency is relatively
It is high.But the micro electromagnetic for being applied in vibration environment generates electricity, and compares piezo-electric generating, and voltage output is relatively low, and
As the reduction voltage output of structural volume is remarkably decreased.The pneumatic piezoelectric generating device of current linear can not be captured sufficiently pneumatically
The pressure energy of system seriously hinders self energizing technology in the application for energizing field for pneumatic system wireless sensor.So
For current traditional energy-provision way and the problems of the piezoelectric generating device developed and electromagnetic power generation apparatus, research is opened
Send out prisoner a kind of can bandwidth and the high power generator of energy density necessitate.
Summary of the invention
It is narrow to solve the prisoner of the pneumatic piezoelectric generator of current linear energy frequency band in order to solve, it is only capable of under resonant frequency efficiently
Power harvesting and the low problem of energy density, the present invention disclose a kind of raising frequency piezoelectricity that vortex street excitation is lower-Electromagnetic heating power generation and fill
It sets.
The technical scheme adopted by the invention is that:
Raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation includes that rectangle holds air cavity, vortex street excitation
Component, limit shaft and square coil composition, wherein vortex street Drive assembly and limit shaft are fixed on the upper and lower ends that rectangle holds air cavity
On face, square coil is symmetrically bonded in the end that rectangle holds air cavity front and rear sides face by epoxy resin, for collecting variation
Magnetic field energy.
The rectangle holds air cavity and is provided with cavity, end cap, end cap fixing screws, and the end cap fixing screws are used for end cap
It is fixed on cavity, to realize being fastenedly connected for end cap and cavity.
The cavity is provided with air through hole, the middle part of cavity left side is set to, for guiding high pressure gas to enter
In cavity；The cavity is provided with lower bearing mounting hole, is set to cavity bottom center front end, is used for and deep groove ball bearing
Cooperation is to realize that the installation to vortex street Drive assembly is fixed；The cavity is provided with the lower mounting hole of limit, is arranged symmetrically cavity
In the middle part of bottom surface, by cooperating with limit shaft upper installing hole to realize that the installation to limit shaft is fixed；The cavity is provided with cavity
Install threaded hole, be evenly distributed on four angles of cavity upper surface, cavity install threaded hole by with end cap fixing screws
Be threadedly engaged, realize that the installation of end cap is fixed；The front center of the end cap is provided with upper bearing (metal) mounting hole, and it is used for and depth
Ditch ball bearing cooperates to realize that the installation to vortex street Drive assembly is fixed；The end cap is evenly arranged with end cap installation through-hole,
Its cavity installation threaded hole for being used for cavity and the cooperation of end cap fixing screws, realize that cavity is fastenedly connected with end cap；The end cap
It is provided with limit shaft upper installing hole, is symmetrically arranged in the middle part of end cap, by cooperating with mounting hole under limit shaft to realize pair
The installation of limit shaft is fixed.
The vortex street Drive assembly includes that deep groove ball bearing, connection ring fixing screws, drive shaft, connection ring, substrate are fixed
Screw, substrate, square magnet and Rectangular piezoelectric piece, wherein deep groove ball bearing and drive shaft are interference fitted, drive shaft and connection ring
It is attached by connection ring fixing screws, connection ring and substrate are attached by substrate retaining screws, and square magnet passes through
Adhering with epoxy resin is in substrate end, and Rectangular piezoelectric piece is by adhering with epoxy resin in the rear end of substrate.
The drive shaft is provided with the fixed end face of bearing, drive shaft both ends is symmetrically arranged in, for limiting deep-groove ball axis
The axial movement held；The drive shaft is provided with the fixed end face of connection ring, is symmetrically arranged in drive shaft both ends, is used for the company of limitation
Connect the axial movement of ring；The drive shaft is provided with flow-disturbing face, is arranged in the middle part of drive shaft, high pressure gas from air through hole into
Enter in cavity, vortex street is generated behind flow-disturbing face and is acted on substrate, and then motivates square magnet vibration；The drive shaft setting
There is connection ring fixing screwed hole, be symmetrically arranged in drive shaft both ends, for limiting the axial movement of connection ring；The connection ring
It is provided with substrate connection screw thread hole, is arranged in the rear end of connection ring, substrate retaining screws and plate connection screw thread hole carry out screw thread
Cooperation, to realize the connection of substrate and connection ring；The connection ring is provided with connection ring through-hole, is arranged in connection ring side
Portion, the circumferencial direction for limiting connection ring move；The substrate is provided with substrate installation through-hole, before being symmetrically arranged in substrate
End, substrate connection screw thread hole and substrate retaining screws for connection ring cooperate, and realize that connection ring is fastenedly connected with substrate；It is described
Substrate is provided with the front end that substrate is arranged in by aerofoil, and high pressure gas passes through the vortex street generated after drive shaft and acts on wind-engaging
On plate；The rear end of the substrate is provided with N root cantilever beam, and N is the positive integer more than or equal to 2,；The square magnet passes through epoxy
Resin glue is bonded in the end of cantilever beam；The Rectangular piezoelectric piece epoxide-resin glue is bonded in the front end of cantilever beam.
It is provided with striking face in the middle part of the limit shaft, is used for amplitude of the restricting substrate under vortex street excitation, the limit
The both ends of position axis have been arranged symmetrically limit shaft installation end face, are used to that limit shaft to be fixedly mounted.
The beneficial effects of the present invention are: utilizing invented vortex street to motivate in the case where not influencing industrial working condition
Component can motivate substrate high-frequency vibration, the substrate and limit shaft generating period of high-frequency vibration under the action of low-frequency high-voltage gas
Collision, the cantilever beam of substrate rear end generates strain under the action of inertia force, and the Rectangular piezoelectric piece being bonded on a cantilever beam will
Strain energy is converted to electric energy, and the magnet for being bonded in cantilever beam end vibrates together also with cantilever beam, by with corresponding rectangle
Fitting coils utilize electromagnetic induction principle, convert mechanical energy into electric energy, and then realize piezoelectricity-Electromagnetic heating power generation.This hair
The energy accumulator of bright design can realize the high-frequency vibration of piezoelectric element and magnet under low-frequency excitation, improve energy conversion efficiency,
And piezo-electric generating is combined to the power density for improving energy accumulator with Electromagnetic generation, is had in pneumatics field wide
Application prospect.
Detailed description of the invention
Fig. 1 show raising frequency piezoelectricity-Electromagnetic heating power generator structure under a kind of vortex street excitation proposed by the present invention
Schematic diagram；
Fig. 2 show raising frequency piezoelectricity-Electromagnetic heating power generator rectangle under a kind of vortex street excitation proposed by the present invention
Hold air cavity structural schematic diagram；
Fig. 3 show raising frequency piezoelectricity-Electromagnetic heating power generator cavity under a kind of vortex street excitation proposed by the present invention
Main view；
Fig. 4 show raising frequency piezoelectricity-Electromagnetic heating power generator end cap under a kind of vortex street excitation proposed by the present invention
Main view；
Fig. 5 show raising frequency piezoelectricity-Electromagnetic heating power generator vortex street under a kind of vortex street excitation proposed by the present invention
Drive assembly structural schematic diagram；
Fig. 6 show raising frequency piezoelectricity-Electromagnetic heating power generator driving under a kind of vortex street excitation proposed by the present invention
Axis cross-sectional view；
Fig. 7 show raising frequency piezoelectricity-Electromagnetic heating power generator connection under a kind of vortex street excitation proposed by the present invention
Ring structure schematic diagram；
Fig. 8 show raising frequency piezoelectricity-Electromagnetic heating power generator substrate under a kind of vortex street excitation proposed by the present invention
Main view；
Fig. 9 show raising frequency piezoelectricity-Electromagnetic heating power generator limit under a kind of vortex street excitation proposed by the present invention
Axle construction schematic diagram.
Specific embodiment
Specific embodiment: illustrate present embodiment in conjunction with Fig. 1 ~ Fig. 9.Present embodiments provide under a kind of excitation of vortex street
Raising frequency piezoelectricity-Electromagnetic heating power generator specific embodiment.Raising frequency piezoelectricity-electromagnetism under a kind of vortex street excitation is multiple
Closing power generator includes that rectangle holds air cavity 1, vortex street Drive assembly 2, limit shaft 3 and the composition of square coil 4, wherein vortex street excitation group
Part 2 and limit shaft 3 are fixed on the inside that rectangle holds air cavity 1, and square coil 4 is symmetrically bonded in rectangle appearance by way of gluing
The end in 1 front and rear sides face of air cavity, for collecting changing magnetic field energy.
The rectangle holds air cavity 1 and is provided with cavity 1-1, end cap 1-2, end cap fixing screws 1-3, the end cap fixing screws
1-3 is used to end cap 1-2 being fixed on cavity 1-1, to realize being fastenedly connected for end cap 1-2 and cavity 1-1；
The cavity 1-1 is provided with mounting hole 1-1-3 under air through hole 1-1-1, lower bearing mounting hole 1-1-2, limit shaft
Threaded hole 1-1-4 is installed with cavity, wherein the air through hole 1-1-1 is set to the middle part of the left side cavity 1-1, for guiding
High pressure gas enters in cavity 1-1, and the lower bearing mounting hole 1-1-2 is set to cavity 1-1 bottom center front end, be used for
Deep groove ball bearing 2-1 cooperates to realize that the installation to vortex street Drive assembly 2 is fixed, and mounting hole 1-1-3 is symmetrical under the limit shaft
Ground is set in the middle part of the bottom surface cavity 1-1, by cooperating with limit shaft upper installing hole 1-2-3 to realize that the installation to limit shaft 3 is solid
It is fixed；The cavity installation threaded hole 1-1-4 is evenly distributed on four angles of the upper surface cavity 1-1, and cavity installs threaded hole 1-
For 1-4 by being threadedly engaged with end cap fixing screws 1-3, the installation of end cap 1-2 is fixed in realization；The end cap 1-2 is provided with
Upper bearing (metal) mounting hole 1-2-1, end cap installation through-hole 1-2-2 and limit shaft upper installing hole 1-2-3, the upper bearing (metal) mounting hole 1-2-
1 is located at the front center of end cap 1-2, is used to cooperate with deep groove ball bearing 2-1, realizes that the installation to vortex street Drive assembly 2 is solid
Fixed, the end cap installation through-hole 1-2-2 is distributed evenly on four angles of end cap 1-2, is used for the cavity installation of cavity 1-1
Threaded hole 1-1-4 and end cap fixing screws 1-3 cooperation realizes that cavity 1-1 and end cap 1-2 is fastenedly connected；Pacify on the limit shaft
Dress hole 1-2-3 is symmetrically arranged in the middle part of end cap, by cooperating with mounting hole 1-1-3 under limit shaft to realize to limit shaft 3
Installation is fixed.
The vortex street Drive assembly 2 includes deep groove ball bearing 2-1, connection ring fixing screws 2-2, drive shaft 2-3, connection ring
2-4, substrate retaining screws 2-5, substrate 2-6, square magnet 2-7 and Rectangular piezoelectric piece 2-8, wherein deep groove ball bearing 2-1 and drive
Moving axis 2-3 interference fit, for drive shaft 2-3 to be fixed on to the front center of cavity 1-1, drive shaft 2-3 and connection ring
2-4 is threadedly coupled by connection ring fixing screws 2-2, connection ring 2-4 and substrate 2-6 by substrate retaining screws 2-5 into
Row connection, square magnet 2-7 are symmetrically fixed on the end of the two sides cantilever beam 2-6-3, Rectangular piezoelectric by way of gluing
Piece 2-8 is symmetrically bonded on the two sides cantilever beam 2-6-3 by epoxide-resin glue；
The drive shaft 2-3 is provided with the fixed end face 2-3-1 of bearing, connection ring fixed end face 2-3-2, flow-disturbing face 2-3-3
With connection ring fixing screwed hole 2-3-4, the fixed end face 2-3-1 of the bearing is symmetrically arranged in the both ends drive shaft 2-3, for limiting
The axial movement of deep groove ball bearing 2-1, the fixed end face 2-3-2 of the connection ring is symmetrically arranged in the both ends drive shaft 2-3, for limiting
The axial movement of connection ring 2-4 processed；Flow-disturbing face 2-3-3 is arranged in the middle part of drive shaft 2-3, and high pressure gas is from air through hole 1-1-1
Into in cavity 1-1, vortex street is generated after the 2-3-3 of flow-disturbing face and is acted on substrate 2-6, and then motivate square magnet 2-7 vibration
It is dynamic；The connection ring fixing screwed hole 2-3-4 is symmetrically arranged in the both ends drive shaft 2-3, for limiting the circle of connection ring 2-4
Circumferential direction movement；The connection ring 2-4 is provided with substrate connection screw thread hole 2-4-1 and connection ring through-hole 2-4-2, and the substrate connects
The rear end that threaded hole 2-4-1 is arranged in connection ring 2-4 is connect, substrate retaining screws 2-5 and substrate connection screw thread hole 2-4-1 carry out spiral shell
Line cooperation, to realize the connection of substrate 2-6 Yu connection ring 2-4, the connection ring through-hole 2-4-2 is arranged in the side connection ring 2-4
Middle part, the circumferencial direction for limiting connection ring 2-4 move；The substrate 2-6 is provided with substrate installation through-hole 2-6-1, wind-engaging
Plate 2-6-2 and cantilever beam 2-6-3, the substrate installation through-hole 2-6-1 are symmetrically arranged in the front end substrate 2-6, are used for connection ring 2-4
Substrate connection screw thread hole 2-4-1 and substrate retaining screws 2-5 cooperation, realize connection ring 2-4 and substrate 2-6 be fastenedly connected, institute
The front end that substrate 2-6 is arranged in by aerofoil 2-6-2 is stated, high pressure gas passes through the vortex street generated after drive shaft 2-3 and acts on wind-engaging
On plate 2-6-2, the cantilever beam 2-6-3 is provided with N root along substrate 2-6 width direction, and N is the positive integer more than or equal to 2, this
The value of N is 3 in specific embodiment；The square magnet 2-7 is fixed on the end of cantilever beam 2-6-3 by way of gluing
End；The Rectangular piezoelectric piece 2-8 epoxide-resin glue is bonded in the front end of cantilever beam 2-6-3, and the epoxide-resin glue can be selected auspicious
Scholar's ergo Products, the piezoelectric material that the Rectangular piezoelectric piece 2-8 can be the U.S. essence amount electronics (Shenzhen) Co., Ltd produce
Product.
The middle part of the limit shaft 3 is provided with striking face 3-1, is used for amplitude of the restricting substrate 2-6 under vortex street excitation,
The both ends of the limit shaft 3 have been arranged symmetrically limit shaft installation end face 3-2, are used to be fixedly mounted limit shaft 3.
The distance of described two limit shaft upper installing hole 1-2-3 is D, and the range that the value of D meets is 10 ~ 40 mm, this tool
In body embodiment the value of D be 30 mm, the upper bearing (metal) mounting hole 1-2-1 between limit shaft upper installing hole 1-2-3 at a distance from
Ratio for E, D and E is X=D/E, and the range that the value of X meets is 0.1 ~ 0.8, and the value of X is in present embodiment
0.5, the value by adjusting X can change amplitude of the substrate 2-6 under vortex street excitation；The height of the drive shaft 2-3 is K, K's
The range that value meets is 70 ~ 120 mm, and the value of K is 90 mm in present embodiment, and the height of flow-disturbing face 2-3-3 is
The ratio of J, K and J are Y=K/J, and the range that the value of Y meets is 1.2 ~ 5, and the value of Y is 3 in present embodiment, are passed through
The value for adjusting X can change the size that vortex street acts on area on substrate 2-6；The length of the substrate 2-6 is L, and the value of L is full
The range of foot is 60 ~ 120 mm, and the value of L is 90 mm in present embodiment, and the height of the cantilever beam 2-6-3 is T, L
Ratio with T is W=L/T, and the range that the value of W meets is 1.2 ~ 5, and the value of W is 2 in present embodiment, passes through adjusting
The value of W can change the resonant frequency of cantilever beam 2-6-3.
Working principle: can be by gas using the electromagnetic induction principle between the direct piezoelectric effect and coil and magnet of piezoelectric material
The impact energy of body is converted into electric energy, the raising frequency piezoelectricity under vortex street excitation designed by the present invention-Electromagnetic heating power generator benefit
With cylinder flow-disturbing effect, so that low-frequency high-voltage gas is forming periodic vortex street after drive shaft 2-3, substrate 2-6 is in whirlpool
The vibration of the excitation periodical in street, square magnet 2-7 periodically vibrates together with substrate 2-6, so that passing through rectangular lines
The magnetic field of circle 4 generates periodically variation, to realize Electromagnetic generation, the cantilever beam 2-6-3 and Rectangular piezoelectric piece of the rear end substrate 2-6
2-8 does periodic vibration with substrate together, and when substrate 2-6 collides with limit shaft 3, cantilever beam 2-6-3 can occur
Strain, strain energy is converted to electric energy by the Rectangular piezoelectric piece 2-8 being bonded on it, to realize piezo-electric generating.Technology of the invention
Advantage is that vortex street Drive assembly 2 is provided with drive shaft 2-3, is based on cylinder flow-disturbing effect, high pressure gas is after drive shaft 2-3
Will form periodic vortex street, vortex street act on by aerofoil 2-6-2 so that cantilever beam 2-6-3 and square magnet 2-7 are all together
The vibration of phase property achievees the purpose that improve Electromagnetic generation energy conversion efficiency, whirlpool so as to improve energy accumulator vibration pick-up structure vibration frequency
Street acts on so that substrate 2-6 and 3 generating period of limit shaft collide, and excitation cantilever beam 2-6-3 and Rectangular piezoelectric piece 2-8 is produced from
Induced Oscillation realizes the purpose for improving piezo-electric generating transfer efficiency, while piezo-electric generating is compound with Electromagnetic generation, has widened power generation dress
The prisoner's energy bandwidth set, improves the energy conversion efficiency of prisoner's energy device.
In conclusion raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation that the present invention designs, utilizes circle
Column flow-disturbing effect, so that piezoelectric element and Electromagnetic generation element carry out high-frequency vibration under the high pressure gas excitation of low frequency variations,
It realizes the conversion of electric energy, improves electromechanical conversion efficiency, piezo-electric generating is combined with Electromagnetic generation, has widened the prisoner of power generator
Energy bandwidth, the energy density for improving power generator, have broad application prospects in pneumatics field.
Claims (7)
1. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation, it is characterised in that the raising frequency under vortex street excitation
Piezoelectricity-Electromagnetic heating power generator holds air cavity (1), vortex street Drive assembly (2), limit shaft (3) and square coil (4) group by rectangle
At wherein vortex street Drive assembly (2) and limit shaft (3) are fixed on rectangle and hold in the upper and lower end faces of air cavity (1), square coil
(4) end that rectangle holds air cavity (1) front and rear sides face is symmetrically bonded in by way of gluing；The rectangle holds air cavity (1)
Cavity (1-1), end cap (1-2), end cap fixing screws (1-3) are provided with, wherein cavity (1-1) and end cap (1-2) pass through end cap
Fixing screws (1-3) are threadedly coupled；The vortex street Drive assembly (2) includes deep groove ball bearing (2-1), the fixed spiral shell of connection ring
Follow closely (2-2), drive shaft (2-3), connection ring (2-4), substrate retaining screws (2-5), substrate (2-6), square magnet (2-7) and square
Shape piezoelectric patches (2-8), wherein the deep groove ball bearing (2-1) with lower bearing mounting hole (1-1-2) and upper bearing (metal) respectively by pacifying
Dress hole (1-2-1) interference fit is fixed on rectangle and holds air cavity (1) front center, the drive shaft (2-3) and deep groove ball bearing (2-
1) rectangle is fixed on by interference fit and holds air cavity (1) front center, the connection ring (2-4) and drive shaft (2-3) pass through company
It connects ring fixing screws (2-2) and is symmetrically fixed on the both ends drive shaft (2-3), the substrate (2-6) passes through substrate retaining screws (2-
5) it is attached with connection ring (2-4), square magnet (2-7) is symmetrically bonded in cantilever beam (2-6-3) by way of gluing
The end of two sides, Rectangular piezoelectric piece (2-8) are symmetrically bonded on the two sides cantilever beam (2-6-3) by way of gluing；Institute
It states limit shaft (3) and is provided with striking face (3-1) and limit shaft installation end face (3-2), wherein striking face (3-1) is arranged in limit shaft
(3) middle part, limit shaft installation end face (3-2) are symmetrically arranged in the both ends of limit shaft (3), respectively with mounting hole under limit shaft
The cooperation of (1-1-3) and limit shaft upper installing hole (1-2-3), realizes limit shaft (3) being fixed on the rear end that rectangle holds air cavity (1).
2. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 1, it is characterised in that
The cavity (1-1) is provided with mounting hole (1-1-3) under air through hole (1-1-1), lower bearing mounting hole (1-1-2), limit shaft
Threaded hole (1-1-4) is installed with cavity, the air through hole (1-1-1) is set to the middle part of the left side cavity (1-1), high pressure gas
Body enters rectangle by air through hole (1-1-1) and holds in air cavity (1), and the lower bearing mounting hole (1-1-2) is set to cavity (1-
1) bottom center front end, mounting hole (1-1-3) is arranged symmetrically in the middle part of the bottom surface cavity (1-1) under the limit shaft, the cavity peace
Dress threaded hole (1-1-4) is evenly distributed on four angles of the upper surface cavity (1-1)；The end cap (1-2) is provided with upper bearing (metal)
Mounting hole (1-2-1), end cap installation through-hole (1-2-2) and limit shaft upper installing hole (1-2-3), the upper bearing (metal) mounting hole (1-
It 2-1) is set to the front center of end cap (1-2), the end cap installation through-hole (1-2-2) is evenly distributed on the upper end end cap (1-2)
On four angles in face, the limit shaft upper installing hole (1-2-3) is symmetrically arranged in end cap on both sides of the middle.
3. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 1, it is characterised in that
The drive shaft (2-3) is provided with bearing fixed end face (2-3-1), connection ring fixed end face (2-3-2), flow-disturbing face (2-3-3)
With connection ring fixing screwed hole (2-3-4), the flow-disturbing face (2-3-3) is arranged in the middle part of drive shaft (2-3), high pressure gas from into
Vent hole (1-1-1) enters rectangle and holds in air cavity (1-1), and vortex street is generated after flow-disturbing face (2-3-3) and acts on substrate (2-6)
On, the connection ring fixing screwed hole (2-3-4) is symmetrically arranged in the both ends drive shaft (2-3)；The connection ring (2-4) is provided with
Substrate connection screw thread hole (2-4-1) and connection ring through-hole (2-4-2)；The substrate (2-6) is provided with substrate installation through-hole (2-6-
1), by aerofoil (2-6-2) and cantilever beam (2-6-3), before the substrate installation through-hole (2-6-1) is symmetrically arranged in substrate (2-6)
End, the front end that substrate (2-6) is set to by aerofoil (2-6-2)；The cantilever beam (2-6-3) is along substrate (2-6) width
Direction is provided with N root, and N is the positive integer more than or equal to 2.
4. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 1, it is characterised in that
The distance of described two limits shaft mounting hole (1-2-3) is D, the upper bearing (metal) mounting hole (1-2-1) and upper limit shaft mounting hole
Distance between (1-2-3) is that the ratio of E, D and E are X=D/E, and the range that the value of X meets is 0.1 ~ 0.6.
5. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 3, it is characterised in that
The height of the drive shaft (2-3) is K, and the height of flow-disturbing face (2-3-3) is that the ratio of J, K and J are Y=K/J, and the value of Y meets
Range be 1.2 ~ 5.
6. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 1, it is characterised in that
The length of the substrate (2-6) is L, and the height of the cantilever beam (2-6-3) is that the ratio of T, L and T are W=L/T, and the value of W is full
The range of foot is 1.2 ~ 5；The width of the substrate (2-6) is H, and the height of the cantilever beam (2-6-3) is the ratio of P, H and P
For S=H/P, the range that the value of S meets is 2.2 ~ 6.
7. raising frequency piezoelectricity-Electromagnetic heating power generator under a kind of vortex street excitation according to claim 1, it is characterised in that
Rectangular piezoelectric piece (2-8) in vortex street Drive assembly (2) selects piezoelectric ceramic piece PZT or piezoelectric element PVDF.
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