CN110080992A - A kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method - Google Patents
A kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method Download PDFInfo
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- CN110080992A CN110080992A CN201910333121.0A CN201910333121A CN110080992A CN 110080992 A CN110080992 A CN 110080992A CN 201910333121 A CN201910333121 A CN 201910333121A CN 110080992 A CN110080992 A CN 110080992A
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- traveling wave
- piezoelectric ceramic
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 239000012530 fluid Substances 0.000 claims abstract description 21
- 230000005284 excitation Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012913 prioritisation Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/12—Constructional details
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method, traveling wave piezoelectricity centrifugal pump includes the pump housing, stator, rotor, precompression component, double shrouded wheel and four piezoelectric ceramic pieces；Stator is equipped with a ring shape sliding tooth；Rotor is in a circular table shape, and each sliding tooth on the conical surface and stator offsets；Four piezoelectric ceramic pieces are uniformly arranged on the side wall of stator；Precompression component is used to adjust the precompression between the rotor conical surface and each sliding tooth；Double shrouded wheel is arranged on rotor.When work, excitation piezoelectric ceramic piece makes to drive particle on the inside of annular tooth to make elliptic motion a little, drives rotor and then drives double shrouded wheel rotation, fluid is made to obtain energy.The configuration of the present invention is simple is easy to seal, and is easy to minimize, and low noise operation, speed control is good, do not generate electromagnetism also not by electromagnetic interference, can cut off self-lock.
Description
Technical field
The present invention relates to field of fluid machinery more particularly to a kind of patch type traveling wave piezoelectricity centrifugal pumps and its driving method.
Background technique
Centrifugal pump has the characteristics that applied widely, revolving speed is high, high-efficient, flow is big, smooth performance, is in pump class product
A kind of most important pump, the output value account for 80% or so of the gross output value of pump, are widely used in the every field of the development of the national economy.
Peripheral hardware motor is needed to be driven when conventional centrifugal pump work, such motor is mutually separated with centrifugal pump, therefore structure
Complexity, volume is larger and is not easy to minimize, and centrifugal pump can also generate larger noise during operation, is unable to supply small stream
Amount；In addition, the operating of conventional motors can generate electromagnetic pollution, this will limit its field in medical treatment, health etc. to magnetic-field-sensitive
Application.
With the development of micro electro mechanical system field, the miniaturization and micromation of traditional equipment have become becoming for future development
Gesture, and the deficiency of the working method of conventional centrifugal pump and structure design, have limited its scope of application further with volume
Miniaturization.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of patch type for defect involved in technical background
Traveling wave piezoelectricity centrifugal pump and its driving method.
The present invention uses following technical scheme to solve above-mentioned technical problem:
A kind of patch type traveling wave piezoelectricity centrifugal pump includes the pump housing, stator, rotor, precompression component, double shrouded wheel and four piezoelectricity
Potsherd；
The pump housing is the hollow cylinder of upper end opening lower end closed, and the outside wall surface of side wall is equipped with flow inlet and goes out to flow
Mouthful, the inner wall of side wall is equipped with the volute type runner that recess the and described outflow port is connected, and the inner wall of bottom wall is equipped with
The pipeline for connection flow inlet and flow-in hole is equipped in flow-in hole and bottom wall；The axis and bottom wall of the volute type runner are flat
Row, and diameter is become larger by starting point to outflow port；
The stator is cylindrical, covers on the pump housing upper surface and the pump housing is connected and forms cavity；In the stator
The heart is equipped with through-hole, and the lower end surface of stator is equipped with circular groove；The stator is uniform in the edge of its lower end surface circular groove
Sliding tooth equipped with several opposite its lower end surface protrusions；
The rotor is in a circular table shape, circular groove is equipped at the center of lower end surface, and the center of rotor is equipped with and the circle is recessed
The through-hole that slot is connected；
The precompression component includes nuts, studs, first bearing and second bearing, wherein the studs one
End and the nuts are threadedly coupled, and the other end sequentially passes through the through-hole of stator center, the through-hole of rotor center protrudes under rotor
In the circular groove of end face；The inner ring of the first bearing and the studs are connected, outer ring and the nuts are connected；Institute
It states second bearing to be arranged in the circular groove of rotor lower end surface, inner ring and studs are connected, outer ring and rotor are connected；
The upper surface of the rotor is protruded into the circular groove of the stator lower end surface, and the conical surface of rotor and the stator lower end
Each sliding tooth offsets on face；The nuts is used to adjust the precompression between the rotor conical surface and each sliding tooth；
The double shrouded wheel is arranged on the lower end surface of the rotor, the fluid for will enter when the rotor rotates from flow-in hole
It is pumped by volute type runner to outflow port；
Four piezoelectric ceramic pieces are rectangle, are uniformly arranged in the circumferential direction in the outside wall surface of the stator side wall, for connecing
External electric signal excitation stator is received to generate bending vibration and then drive rotor rotation by each sliding tooth；Enable line by stator
The two panels piezoelectric ceramic piece of the heart is one group, and the polarization direction of two panels piezoelectric ceramic piece is identical in each group piezoelectric ceramic piece.
As a kind of further prioritization scheme of patch type traveling wave piezoelectricity centrifugal pump of the invention, the pump housing upper end is uniform
There are four tapped blind hole, the stators to be connected by four screws and the pump housing for setting.
As a kind of further prioritization scheme of patch type traveling wave piezoelectricity centrifugal pump of the invention, the first bearing and stator
Upper surface between be equipped with sealing ring.
As a kind of further prioritization scheme of patch type traveling wave piezoelectricity centrifugal pump of the invention, before the double shrouded wheel includes
Cover board and several blades in arc line shaped；
The front shroud center is equipped with the through-hole for water inlet；
Several blades are arranged between rotor lower end surface and front shroud, are connected with rotor lower end, front shroud respectively, and if should
Cured leaf piece is arranged in the shape of a spiral, so that forming the arc line shaped runner of several interior narrow outer widths between rotor lower end surface and front shroud.
As a kind of further prioritization scheme of patch type traveling wave piezoelectricity centrifugal pump of the invention, the pump housing is in its bottom wall
Round boss is equipped at wall surface flow-out hole, the boss center is equipped with the through-hole that flow-out hole wide at the top and narrow at the bottom and described is connected.
The invention also discloses a kind of driving methods of patch type traveling wave piezoelectricity centrifugal pump comprising the steps of:
Two groups of piezoelectric ceramic pieces are applied with the electric signal with pi/2 phase difference respectively, inspiring two-phase spatially has pi/2 phase
Bending vibration modes in the n terrace of potential difference, n is the integer more than or equal to 2, so that rotary traveling wave is formed on the stator, so that fixed
Each sliding tooth does elliptic motion a little on son, and then is driving rotor by rubbing action in the case where precompression is acted on；Rotor band
Dynamic double shrouded wheel rotation, the fluid entered from flow-in hole is pumped by volute type runner to outflow port.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
The present invention becomes one driving device and centrifugal pump, has structure simple, is easy to seal, and it is excellent to be easy to miniaturization etc.
Point；Furthermore drive part low noise operation, speed control is good, do not generate electromagnetism also not by electromagnetic interference, cut off self-lock
Advantage has widened the application range of centrifugal pump.
Detailed description of the invention
Fig. 1 is whole three dimensional structure diagram of the invention；
Fig. 2 is the integrally-built diagrammatic cross-section of the present invention；
Fig. 3 is the diagrammatic cross-section of volute type runner and double shrouded wheel inside middle pump body of the present invention；
Fig. 4 is middle pump body a quarter three-dimensional sectional of the present invention and schematic of fluid flow；
Fig. 5 is the flow schematic diagram that rotor and double shrouded wheel match rear fluid in the present invention；
Fig. 6 is the three dimensional structure diagram of stator in the present invention；
Fig. 7 is the mode of oscillation schematic diagram of stator in the present invention；
Fig. 8 is the three dimensional structure diagram that stator in the present invention, rotor, double shrouded wheel match.
Wherein, the 1- pump housing, 2- stator, 3- piezoelectric ceramic piece, 4- flow inlet, 5- outflow port, 6- nuts, 7- rotor, 8-
Studs, 9- first bearing, 10- sealing ring, 11- second bearing, 12- sliding tooth, 13- double shrouded wheel, 14- volute type stream
Road, 15- arc line shaped runner, 16- front shroud, 17- blade, the through-hole of 18- stator center.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary, providing
These embodiments are thoroughly and complete to make the disclosure, and will give full expression to the scope of the present invention to those skilled in the art.
In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, the invention discloses a kind of patch type traveling wave piezoelectricity centrifugal pump, comprising the pump housing, stator, rotor, pre-
Pressure assembly, double shrouded wheel and four piezoelectric ceramic pieces.
As shown in Figure 2, Figure 4 shows, the pump housing is the hollow cylinder of upper end opening lower end closed, in the outside wall surface of side wall
Equipped with flow inlet and outflow port, the inner wall of side wall is equipped with the volute type runner that recess the and described outflow port is connected, bottom
The inner wall of wall is equipped with the pipeline being equipped in flow-in hole and bottom wall for connection flow inlet and flow-in hole；The volute type stream
The axis in road is parallel with bottom wall, and diameter is become larger by starting point to outflow port.There are four the pump housing upper end is uniformly arranged
Tapped blind hole, the stator are connected by four screws and the pump housing.
As shown in Fig. 2, Fig. 6, the stator is cylindrical, cover on the pump housing upper surface and the pump housing be connected shape
At cavity；The center of the stator is equipped with through-hole, and the lower end surface of stator is equipped with circular groove；The stator is in its lower end surface circle
The edge of connected in star is uniformly provided with the sliding tooth of several opposite its lower end surface protrusions.
As shown in Fig. 2, the rotor is in a circular table shape, circular groove is equipped at the center of lower end surface, and the center of rotor is set
There is the through-hole being connected with the circular groove；The precompression component includes nuts, studs, first bearing and second
Bearing, wherein described studs one end and the nuts are threadedly coupled, the other end sequentially pass through stator center through-hole,
The through-hole of rotor center protrudes into the circular groove of rotor lower end surface；The inner ring of the first bearing and the studs are solid
Even, outer ring and the nuts are connected；The second bearing is arranged in the circular groove of rotor lower end surface, inner ring and double end spiral shell
Column is connected, outer ring and rotor are connected；
As shown in Fig. 2, Fig. 8, the upper surface of the rotor is protruded into the circular groove of the stator lower end surface, and the conical surface of rotor
It offsets with each sliding tooth on the stator lower end surface；The nuts is for adjusting between the rotor conical surface and each sliding tooth
Precompression.
As shown in Fig. 2, Fig. 5, Fig. 8, the double shrouded wheel is arranged on the lower end surface of the rotor, for rotating in rotor
When the fluid entered from flow-in hole is pumped by volute type runner to outflow port；The double shrouded wheel include front shroud and it is several be in arc
Linear blade；The front shroud center is equipped with the through-hole for water inlet；Several blade settings are in rotor lower end surface with before
Be connected between cover board, respectively with rotor lower end, front shroud, and several blades are arranged in the shape of a spiral so that rotor lower end surface and
The arc line shaped runner of several interior narrow outer widths is formed between front shroud.The pump housing is equipped with circle at its bottom wall inner wall flow-out hole
Boss, the boss center are equipped with the through-hole that flow-out hole wide at the top and narrow at the bottom and described is connected.
Four piezoelectric ceramic pieces are rectangle, are uniformly arranged in the circumferential direction in the outside wall surface of the stator side wall, are used
Bending vibration is generated and then by the drive rotor rotation of each sliding tooth in receiving external electric signal excitation stator；Enable line by fixed
The two panels piezoelectric ceramic piece of subcenter is one group, and the polarization direction of two panels piezoelectric ceramic piece is identical in each group piezoelectric ceramic piece.
Sealing ring is equipped between the first bearing and the upper surface of stator.
As shown in figure 3, internal diameter becomes larger pump body volute type runner along clockwise direction, it is gradual-enlargement type runner, stream
Body enters volute type runner from the arc line shaped runner between rotor lower end surface and front shroud, finally flows out from outflow port；This is advantageous
In working fluid of the collection from arc line shaped runner outer rim tangential direction, and the part kinetic energy of working fluid is made to be converted into static pressure
Can, realize fluid pressurized.
As shown in figure 5, to be conducive to rotor complete under rotation status for the arc line shaped runner between rotor lower end surface and front shroud
The acceleration of pairs of fluid；Arrow is that working-fluid flow illustrates direction, the schematic operational stream by taking one of arc line shaped runner as an example
The case where body；Original state arc line shaped runner submerges in a fluid, and electric signal is applied to piezoelectric ceramics on piece, inspires corresponding
Mode drives rotor rotation, and the working fluid inside arc line shaped runner is due to relative motion, under the action of the centrifugal force, along arc line shaped
The tangential direction of runner outer rim is thrown out of, and into volute type runner, while double shrouded wheel is centrally formed low-pressure area；In pump body
Under the action of fluid and double shrouded wheel core flow pressure difference, fluid is inhaled into arc line shaped runner, constantly rotates by rotor, flows
Body just can continuously be inhaled into and throw away, and convert static energy for part kinetic energy by volute type runner, realize fluid pressurized, finally
Into outflow port；The mechanical energy that working fluid obtains in patch type traveling wave piezoelectricity centrifugal pump is eventually exhibited as outflow port static pressure
The raising of energy.
The invention also discloses a kind of driving methods of patch type traveling wave piezoelectricity centrifugal pump comprising the steps of:
Two groups of piezoelectric ceramic pieces are applied with the electric signal with pi/2 phase difference respectively, inspiring two-phase spatially has pi/2 phase
Bending vibration modes in the n terrace of potential difference, n is the integer more than or equal to 2, so that rotary traveling wave is formed on the stator, so that fixed
Each sliding tooth does elliptic motion a little on son, and then is driving rotor by rubbing action in the case where precompression is acted on；Rotor band
Dynamic double shrouded wheel rotation, will be pumped the fluid entered from flow-in hole to outflow port by volute type runner.
As shown in fig. 7, arrow direction is piezoelectric ceramic piece polarization direction, four piezoelectric ceramic piece polarization directions are identical；Three
A ellipse represents the elliptical trajectory spatially formed in a certain moment annular tooth, and two dotted line curved line trangles represent two
Mutually spatially there are bending vibration modes in the face of pi/2 phase difference.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (6)
1. a kind of patch type traveling wave piezoelectricity centrifugal pump, which is characterized in that include the pump housing, stator, rotor, precompression component, enclosed
Impeller and four piezoelectric ceramic pieces；
The pump housing is the hollow cylinder of upper end opening lower end closed, and the outside wall surface of side wall is equipped with flow inlet and goes out to flow
Mouthful, the inner wall of side wall is equipped with the volute type runner that recess the and described outflow port is connected, and the inner wall of bottom wall is equipped with
The pipeline for connection flow inlet and flow-in hole is equipped in flow-in hole and bottom wall；The axis and bottom wall of the volute type runner are flat
Row, and diameter is become larger by starting point to outflow port；
The stator is cylindrical, covers on the pump housing upper surface and the pump housing is connected；The center of the stator is equipped with
The lower end surface of through-hole, stator is equipped with circular groove；If the stator is uniformly provided in the edge of its lower end surface circular groove
The sliding tooth of dry opposite its lower end surface protrusion；
The rotor is in a circular table shape, circular groove is equipped at the center of lower end surface, and the center of rotor is equipped with and the circle is recessed
The through-hole that slot is connected；
The precompression component includes nuts, studs, first bearing and second bearing, wherein the studs one
End and the nuts are threadedly coupled, and the other end sequentially passes through the through-hole of stator center, the through-hole of rotor center protrudes under rotor
In the circular groove of end face；The inner ring of the first bearing and the studs are connected, outer ring and the nuts are connected；Institute
It states second bearing to be arranged in the circular groove of rotor lower end surface, inner ring and studs are connected, outer ring and rotor are connected；
The upper surface of the rotor is protruded into the circular groove of the stator lower end surface, and the conical surface of rotor and the stator lower end
Each sliding tooth offsets on face；The nuts is used to adjust the precompression between the rotor conical surface and each sliding tooth；
The double shrouded wheel is arranged on the lower end surface of the rotor, the fluid for will enter when the rotor rotates from flow-in hole
It pumps through volute type runner to outflow port；
Four piezoelectric ceramic pieces are rectangle, are uniformly arranged in the circumferential direction in the outside wall surface of the stator side wall, for connecing
It receives external electric signal excitation stator and generates bending vibration, and then rotor rotation is driven by each sliding tooth；Enable line by stator
The two panels piezoelectric ceramic piece of the heart is one group, and the polarization direction of two panels piezoelectric ceramic piece is identical in each group piezoelectric ceramic piece.
2. patch type traveling wave piezoelectricity centrifugal pump according to claim 1, which is characterized in that the pump housing upper end is uniformly set
It sets there are four tapped blind hole, the stator is connected by four screws and the pump housing.
3. patch type traveling wave piezoelectricity centrifugal pump according to claim 1, which is characterized in that the first bearing and stator
Sealing ring is equipped between upper surface.
4. patch type traveling wave piezoelectricity centrifugal pump according to claim 1, which is characterized in that the double shrouded wheel includes front cover
Plate and several blades in arc line shaped；
The front shroud center is equipped with the through-hole for water inlet；
Several blades are arranged between rotor lower end surface and front shroud, are connected with rotor lower end, front shroud respectively, and if should
Cured leaf piece is arranged in the shape of a spiral, so that forming the arc line shaped runner of several interior narrow outer widths between rotor lower end surface and front shroud.
5. patch type traveling wave piezoelectricity centrifugal pump according to claim 1, which is characterized in that the pump housing is in its bottom wall inner wall
Round boss is equipped at the flow-out hole of face, the boss center is equipped with the through-hole that flow-out hole wide at the top and narrow at the bottom and described is connected.
6. the driving method based on patch type traveling wave piezoelectricity centrifugal pump described in claim 1, which is characterized in that include following step
It is rapid:
Two groups of piezoelectric ceramic pieces are applied with the electric signal with pi/2 phase difference respectively, inspiring two-phase spatially has pi/2 phase
Bending vibration modes in the n terrace of potential difference, n is the integer more than or equal to 2, so that rotary traveling wave is formed on the stator, so that fixed
Each sliding tooth does elliptic motion a little on son, and then is driving rotor by rubbing action in the case where precompression is acted on；Rotor band
Dynamic double shrouded wheel rotation, will be pumped the fluid entered from flow-in hole to outflow port by volute type runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910333121.0A CN110080992A (en) | 2019-04-24 | 2019-04-24 | A kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910333121.0A CN110080992A (en) | 2019-04-24 | 2019-04-24 | A kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110080992A true CN110080992A (en) | 2019-08-02 |
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ID=67416475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910333121.0A Pending CN110080992A (en) | 2019-04-24 | 2019-04-24 | A kind of patch type traveling wave piezoelectricity centrifugal pump and its driving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425149A (en) * | 2019-07-29 | 2019-11-08 | 南京航空航天大学 | A kind of two-stage sandwich traveling wave piezoelectricity centrifugal pump and its driving method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60210173A (en) * | 1984-04-02 | 1985-10-22 | Canon Inc | Vibration wave motor |
| US4980599A (en) * | 1989-02-15 | 1990-12-25 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| EP0719938A1 (en) * | 1994-12-28 | 1996-07-03 | WILO GmbH | Travelling wave piezo electric motor for canned motor pumps with magnetic coupling |
| JP2004289880A (en) * | 2003-03-19 | 2004-10-14 | Miyuki Seiki Kk | Piezoelectric motor and fan using piezoelectric motor |
| CN210106186U (en) * | 2019-04-24 | 2020-02-21 | 南京航空航天大学 | SMD traveling wave piezoelectric centrifugal pump |
-
2019
- 2019-04-24 CN CN201910333121.0A patent/CN110080992A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60210173A (en) * | 1984-04-02 | 1985-10-22 | Canon Inc | Vibration wave motor |
| US4980599A (en) * | 1989-02-15 | 1990-12-25 | Aisin Seiki Kabushiki Kaisha | Ultrasonic motor |
| EP0719938A1 (en) * | 1994-12-28 | 1996-07-03 | WILO GmbH | Travelling wave piezo electric motor for canned motor pumps with magnetic coupling |
| JP2004289880A (en) * | 2003-03-19 | 2004-10-14 | Miyuki Seiki Kk | Piezoelectric motor and fan using piezoelectric motor |
| CN210106186U (en) * | 2019-04-24 | 2020-02-21 | 南京航空航天大学 | SMD traveling wave piezoelectric centrifugal pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110425149A (en) * | 2019-07-29 | 2019-11-08 | 南京航空航天大学 | A kind of two-stage sandwich traveling wave piezoelectricity centrifugal pump and its driving method |
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