CN200958480Y - Piezoelectric-driven axial-flow fan - Google Patents
Piezoelectric-driven axial-flow fan Download PDFInfo
- Publication number
- CN200958480Y CN200958480Y CN 200620133943 CN200620133943U CN200958480Y CN 200958480 Y CN200958480 Y CN 200958480Y CN 200620133943 CN200620133943 CN 200620133943 CN 200620133943 U CN200620133943 U CN 200620133943U CN 200958480 Y CN200958480 Y CN 200958480Y
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- stator
- cowling
- impeller
- ring
- friction ring
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- 239000000919 ceramic Substances 0.000 claims abstract description 19
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- 238000000034 method Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
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- 238000012545 processing Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
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- 230000005540 biological transmission Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model relates to a piezo driving axial fan and belongs to a fluid machinery field. A fairing (2) of the device extends a crossshaft on the right side along the horizontal center line and the tail end of the shaft is provided with an external thread. A fairing body (5) is provided with a threaded hole and the external thread at the tail end of the fairing (2) shaft is assorted with the internal thread of the threaded hole of the fairing body (5). The shaft of the fairing (2) is provided with a blade (3), a friction ring (9), a driving stator (10) and a piezoelectric ceramic ring (11). The blade (3) and the friction ring (9) are fixed together as whole, and driving stator (10) and the piezoelectric ceramic ring (11) are fixed together as a whole, as well as the driving stator (10) and the friction ring (9) are under compaction state. The circle of the driving stator (10) is provided with the guide blades (4) uniformly, an end of the guide blade (4) is fixed with the driving stator (10), and the other end is fixed with a casing (5). The device has the advantages of miniaturization, integration and fast response and is free of interference of electromagnetic wave.
Description
Technical field
The utility model relates to a kind of Piezoelectric Driving axial-flow blower, belongs to field of fluid machinery.
Background technique
Axial fan is the machinery that is used for conveying gas, has the characteristics of low pressure, big flow, is widely used in fields such as mine, metallurgy, Aero-Space and Vehicle Engineering.
Fig. 1 is the structural representation of traditional axial fan.Traditional axial fan needs the peripheral hardware motor to drive when working usually, and motor and blower fan are separated like this, so complex structure, and it is bigger to take up room.Along with the development of micro-electromechanical technology, electrical equipment miniaturization and microminiaturization have become a kind of research tendency.And the intrinsic driving mode of traditional axial fan has influenced the further miniaturization of volume to a certain extent.In addition, conventional motors is utilized electromagnetic effect work, therefore adopts conventional motors as driving source, can produce magnetic field during work, when using in some field, must add electromagnet shielding device.
The model utility content
The purpose of this utility model has been to overcome the above-mentioned defective of traditional axial fan, a kind of axial fan that utilizes piezoelectric constant as driving source is provided, this design becomes one drive unit and blower fan, has that volume is little, response soon, does not produce advantage such as electromagnetic interference.
To achieve these goals, the utility model has adopted following technological scheme.This device mainly comprises slip ring 1, cowling 2, impeller 3, stator 4, rectification body 5, wherein, and cowling 2, impeller 3, stator 4, the from left to right coaxial installation of rectification body 5.It is characterized in that: described cowling 2 extends a transverse axis to the right along its horizontal center line, makes being shaped as of cowling 2
Shape, this shaft end is provided with outside thread, and the left side in the described rectification body 5 is provided with tapped hole along its horizontal center line, and the outside thread of cowling 2 shaft ends matches with the internal thread of the tapped hole of rectification body 5.Be disposed with impeller 3, friction ring 9 from left to right on the axle of cowling 2, drive stator 10, piezoelectric ceramic ring 11, wherein, impeller 3 is fixed in the axle of cowling 2 by bearing 8, and impeller 3 is fixed as one with friction ring 9.It is fixing with the axle of cowling 2 to drive stator 10, drives stator 10 and is fixed as one with piezoelectric ceramic ring 11.Drive stator 10 and be in impaction state, make driving stator 10 under the effect of frictional force, can drive friction ring 9 and rotate with friction ring 9.Evenly be provided with stator 4 along the circumference that drives stator 10, an end of stator 4 is fixed with driving stator 10, and the other end and casing 5 are fixing.Stator 4 also plays the effect of vertical support to this device.
The shape of friction ring 9, piezoelectric ceramic ring 11 is ring.
Also be provided with pad 7 between cowling 2 and bearing 8, pad 7 is used for reducing the friction between cowling 2 and the bearing 8, simultaneously because the existence of bearing 8 makes impeller 3 can rotate with respect to cowling 2.Drive part and blower fan become one in the utility model.
Shown in Fig. 3 ~ 4, the outside thread of cowling 2 stationary axle ends and the screw-internal thread fit on the rectification body 6 are regulated the degree that compresses that drives between stator 10 and the friction ring 9 respectively for described cowling 2, rectification body 6 structures.Friction ring 9, driving stator 10, piezoelectric ceramic ring 11 have constituted drive unit of the present utility model.
This device is applicable to mini-plant inner ventilation system and the restricted ventilation equipment of installation dimension.The cpu cooling fan that uses in the computer main for example.
Driving principle of the present utility model is as shown in Figure 7: the inverse piezoelectric effect of utilizing piezoelectric ceramic ring 11, the voltage signal of characteristic frequency is applied on the piezoelectric ceramic ring 11, the stretching and the compressive strain that alternately take place on the piezoelectric ceramic ring 11 form capable ripple, row ripple direction is shown among Fig. 7 12, and the capable ripple of generation brings out and drives stator 10 generation distortion.This moment at the movement locus that drives stator 10 lip-deep each particle shown among Fig. 7 oval 13.The tangential velocity of these oval 13 movement locus promotes friction ring 9 edges and the opposite direction transmission of row direction of wave travel by rubbing action, shown among Fig. 7 14 just.Because fixedlying connected between friction ring 9 and the impeller 3, when friction ring 9 rotated, impeller 3 is rotation in the same way also.
Owing to use piezoelectric ceramic ring, make original drive part, blower fan integrated as a whole in the utility model, help further miniaturization, integrated as driving source; The interference that do not generate electromagnetic waves in the drive unit work does not need screening arrangement, belongs to the fluid machinery in self no electromagnetic pollution source.
Description of drawings
Fig. 1 tradition axial-flow blower structural representation
Fig. 2 Piezoelectric Driving axial-flow blower structural representation
Fig. 3 cowling plan view
The right elevation of Fig. 4 Fig. 3
Fig. 5 rectification body plan view
Fig. 6 rectification body left view
Fig. 7 driving principle figure
Among the figure: 1, slip ring, 2, cowling, 3, impeller, 4, stator, 5, casing, 6, rectification body, 7, pad, 8, bearing, 9, friction ring, 10, drive stator, 11, piezoelectric ceramic ring, 12, row ripple direction, 13, surperficial particle motion trace, 14, the friction ring sense of rotation.
Embodiment
Embodiment of the present utility model is referring to Fig. 2～4.Present embodiment mainly comprises slip ring 1, cowling 2, impeller 3, stator 4, rectification body 5, wherein, and cowling 2, impeller 3, stator 4, the from left to right coaxial installation of rectification body 5.Described cowling 2 extends a transverse axis to the right along its horizontal center line, makes being shaped as of cowling 2
Shape, this shaft end is provided with outside thread, and the left side in the described rectification body 5 is provided with tapped hole along its horizontal center line, and the outside thread of cowling 2 shaft ends matches with the internal thread of the tapped hole of rectification body 5.Be disposed with impeller 3, friction ring 9 from left to right on the axle of cowling 2, drive stator 10, piezoelectric ceramic ring 11, wherein, impeller 3 is fixed in the axle of cowling 2 by bearing 8, and impeller 3 is fixed as one with friction ring 9.Drive stator 10 and fixedly connected, drive stator 10 and be fixed as one with piezoelectric ceramic ring 11 with the axle of cowling 2.Drive stator 10 and be in impaction state, make driving stator 10 under the effect of frictional force, can drive friction ring 9 and rotate with friction ring 9.Evenly be provided with stator 4 along the circumference that drives stator 10, an end of stator 4 is fixed with driving stator 10, and the other end and casing 5 are fixing.Stator 4 also plays the effect of vertical support to this device.
The shape of friction ring 9, piezoelectric ceramic ring 11 is ring.
Present embodiment adopts 15V, 1.2A direct current is as power supply input controlling and driving device, utilize the controlling and driving device to produce the voltage signal of the required characteristic frequency of piezoelectric ceramic ring 11,, and then realize driving and control blower fan with this voltage signal input piezoelectric ceramic ring 14.
In the present embodiment, cowling 2, rectification body 6, pad 7 can use metallic material to utilize the conventional metals processes, and wherein cowling 2, rectification body 6 use light-weight metal processing.Bearing 8 is commercially available standard piece, and friction ring 9, piezoelectric ceramic ring 11 are commercially available non-standard component, also can utilize commercially available piezoceramic material, friction material to process as required.Drive stator 10 and adopt metallic material, can select brass for use usually, can adopt traditional metal working process to process according to actual needs and with reference to the ultrasound electric machine related data with amplification.Slip ring 1, impeller 3, stator 4, casing 5 can adopt the processing method processing of conventional fan.
Claims (1)
1, a kind of Piezoelectric Driving axial-flow blower mainly comprises slip ring (1), cowling (2), impeller (3), stator (4), rectification body (5), wherein, and cowling (2), impeller (3), stator (4), the from left to right coaxial installation of rectification body (5); It is characterized in that: described cowling (2) extends a transverse axis to the right along its horizontal center line, makes being shaped as of cowling (2)
Shape, this shaft end is provided with outside thread, and the left side in the described rectification body (5) is provided with tapped hole along its horizontal center line, and the outside thread of cowling (2) shaft end matches with the internal thread of the tapped hole of rectification body (5); On the axle of cowling (2), be disposed with impeller (3), friction ring (9) from left to right, drive stator (10), piezoelectric ceramic ring (11), wherein, impeller (3) is fixed in the axle of cowling (2) by bearing (8), impeller (3) is fixed as one with friction ring (9), drive stator (10) and fixedly connected, drive stator (10) and be fixed as one with piezoelectric ceramic ring (11) with the axle of cowling (2); Drive stator (10) and be in impaction state, make driving stator (10) under the effect of frictional force, can drive friction ring (9) and rotate with friction ring (9); Evenly be provided with stator (4) along the circumference that drives stator (10), an end of stator (4) is fixed with driving stator (10), and the other end and casing (5) are fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620133943 CN200958480Y (en) | 2006-09-29 | 2006-09-29 | Piezoelectric-driven axial-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620133943 CN200958480Y (en) | 2006-09-29 | 2006-09-29 | Piezoelectric-driven axial-flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200958480Y true CN200958480Y (en) | 2007-10-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620133943 Expired - Fee Related CN200958480Y (en) | 2006-09-29 | 2006-09-29 | Piezoelectric-driven axial-flow fan |
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| Country | Link |
|---|---|
| CN (1) | CN200958480Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148022A (en) * | 2012-02-15 | 2013-06-12 | 重庆德马变频电机研发制造有限公司 | Rectification driving wind tunnel fan device |
| CN107939703A (en) * | 2017-01-23 | 2018-04-20 | 台州四合风机有限公司 | A kind of double fan blade drying machine wet-emitting blowers |
-
2006
- 2006-09-29 CN CN 200620133943 patent/CN200958480Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148022A (en) * | 2012-02-15 | 2013-06-12 | 重庆德马变频电机研发制造有限公司 | Rectification driving wind tunnel fan device |
| CN107939703A (en) * | 2017-01-23 | 2018-04-20 | 台州四合风机有限公司 | A kind of double fan blade drying machine wet-emitting blowers |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |