CN208380824U - A kind of Valveless piezoelectric pump equipped with three-dimensional flow tube - Google Patents
A kind of Valveless piezoelectric pump equipped with three-dimensional flow tube Download PDFInfo
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- CN208380824U CN208380824U CN201821019703.9U CN201821019703U CN208380824U CN 208380824 U CN208380824 U CN 208380824U CN 201821019703 U CN201821019703 U CN 201821019703U CN 208380824 U CN208380824 U CN 208380824U
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- 239000007787 solid Substances 0.000 claims abstract description 89
- 239000002184 metal Substances 0.000 claims description 18
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 87
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 11
- 238000005086 pumping Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 6
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- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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- 238000004377 microelectronic Methods 0.000 description 1
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- 230000009467 reduction Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The utility model provides a kind of Valveless piezoelectric pump equipped with three-dimensional flow tube, including the piezoelectric pump pump housing, electric-control system and two drops solid flow tubes, the piezoelectric pump pump housing is provided with pump chamber, and the piezoelectric vibrator for adjusting its volume is provided in pump chamber, and piezoelectric vibrator is electrically connected with electric-control system；The piezoelectric pump pump housing is additionally provided with the first runner being connected with pump chamber and second flow channel, and first runner and second flow channel are respectively arranged with a drops solid flow tube, and the inner wall of drops solid flow tube is curved-surface structure and inner wall surface thereof smoothly transits.Using the Valveless piezoelectric pump for being equipped with three-dimensional flow tube of technical solutions of the utility model, drops solid tube flowing structure is relative to two-dimension plane structure runner, its flow resistance coefficient is smaller, the turbulent flow and eddy flow of fluid flowing can be reduced, increase the stationarity of fluid flowing, the flow resistance of drops solid flow tube is small, thus, it is possible to reduce the energy that when the fluid is flowing is lost, to improve the transfer efficiency of fluid.
Description
Technical field
The utility model relates to piezoelectricity pump technical fields, and in particular to a kind of Valveless piezoelectric pump equipped with three-dimensional flow tube.
Background technique
Piezoelectric pump compared to other conventional pumps, its structure is simple, small in size, light weight, low energy consumption, noiseless, without electromagnetism
The advantages that interfering and can accurately controlling microfluid, has obtained the concern of domestic and international numerous researchers, has been widely used at present
Aerospace, biologic medical, machinery, small household appliances, micro- chemical mixing, on the fields such as microelectronics is cooling.
The deformation that the pumping motive power of piezoelectric pump is generated from the inverse piezoelectric effect of piezoelectric vibrator, its working principle is that,
Under the action of alternating current, Piezoelectric Ceramic sheet metal realizes the vibration repeatedly of piezoelectric vibrator, so that piezoelectric pump pumps
The conveying of liquid is realized in the variation of cavity volume generating period.It is to have valve piezoelectric pump and nothing from piezoelectric pump can be divided whether there is or not valve block
Valve piezoelectric pump.Valveless piezoelectric pump configuration is simple, and the flow resistance coefficient using disengaging flow tube is different, is formed under the volume variation of pump chamber
The one-way flow of macroscopical upper fluid.
In current research, existing Valveless piezoelectric pump is all to form such as tapered runner Valveless piezoelectric pump, " Y " in the plane
Shape runner Valveless piezoelectric pump or other curved shape flow tube Valveless piezoelectric pumps, above-mentioned piezoelectric pump are all on its runner with some substrate
Based on and etch runner, i.e., Valveless piezoelectric pump in the prior art is using two-dimensional plane flow passage structure, on runner
Enlarged portion and contraction flow region are set, the one-way flow of fluid is achieved in, since fluid is when enlarged portion and contraction flow region flow, flow velocity
The appearance of turbulent flow is easy to cause when changing too fast, the runner that single enlarged portion is formed can be generated in its maximum one end
Biggish turbulent flow and eddy flow, so that fluid flowing is not sufficiently stable；In addition, the flow resistance of two-dimentional flow passage structure is big, fluid stream
The out-of-date more energy of loss, and then cause the transfer efficiency of fluid low.
Utility model content
The purpose of the utility model is to provide a kind of Valveless piezoelectric pumps equipped with three-dimensional flow tube, using the Valveless piezoelectric
Pump can reduce the turbulent flow and eddy flow of fluid flowing, increase the stationarity of fluid flowing, and improve the transfer efficiency of fluid.
Based on this, the utility model provides a kind of Valveless piezoelectric pump equipped with three-dimensional flow tube, including the piezoelectric pump pump housing, electricity
Control system and two drops solid flow tubes, the piezoelectric pump pump housing are provided with pump chamber, are provided in the pump chamber for adjusting
The piezoelectric vibrator of its volume, the piezoelectric vibrator are electrically connected with the electric-control system；The piezoelectric pump pump housing is additionally provided with and institute
The first runner and second flow channel that pump chamber is connected are stated, the first runner and the second flow channel are respectively arranged with described in one
The inner wall of drops solid flow tube, the drops solid flow tube is curved-surface structure and inner wall surface thereof smoothly transits.
Preferably, two drops solid flow tubes are mutually inverted and are vertically installed in the upper of the pump chamber
Side, each drops solid flow tube include large diameter end and small-caliber end, and the drops on the first runner is three-dimensional
Flow tube large diameter end is arranged upward, and the small-caliber end of the drops solid flow tube in the second flow channel is arranged upward.
Preferably, the drops solid flow tube includes half bulb and rotary table pipe, and the rotary table pipe includes roundlet
End and big nose circle, the radius of half bulb is equal with the radius of big nose circle of the rotary table pipe, half bulb and the circle
The big nose circle of platform pipe is connected, and half bulb one end is the large diameter end, and the small nose circle of the rotary table pipe is described small
Bore end.
Preferably, the radius for remembering half bulb is R, and the length of the rotary table pipe is L, the half of half bulb
The value range of ratio between diameter and the length of the rotary table pipe is 0.1 < R/L < 0.35.
Preferably, the piezoelectric pump pump housing includes the upper cover being detachably connected and pedestal, and the upper cover is buckled in
The upside of the pedestal, the pedestal setting is fluted, and the vallecular cavity of the groove constitutes the pump chamber, and the piezoelectric vibrator is fixed
In the top side of the pump chamber, and the upper cover is provided with through-hole corresponding with the piezoelectric vibrator.
Preferably, the piezoelectric vibrator includes sheet metal and the piezoelectric ceramics that is adhered on the upside of the sheet metal
Piece, the sheet metal and the piezoelectric ceramic piece are circle, and the diameter of the piezoelectric ceramic piece is less than the sheet metal
Diameter.
Preferably, the inner wall of the upper cover is equipped with card slot, and the sheet metal is connected in the card slot.
Preferably, sealing ring is provided between the piezoelectric vibrator and the pump chamber, the pedestal is in the pump
It is provided with step on the upside of chamber, the sealing ring is set on the step surface of the step.
Preferably, further include connecting tube, each drops solid flow tube respectively by the connecting tube with
The piezoelectric pump pump housing is connected, and each connecting tube is connected with the first runner and the second flow channel respectively.
Preferably, the top side of each drops solid flow tube is respectively connected with curved bend broken pipe, and described in two
The nozzle of curved bend broken pipe is disposed opposite to each other.
Implement the utility model embodiment, has the following beneficial effects:
1, periodically variable piezoelectric vibrator is capable of the volume of periodically-varied pump chamber, so that piezoelectric pump completes fluid
Pumping procedure, and first runner and second flow channel have a guide functions, enable to fluid flowing when passing in and out pump chamber
Stablize, so that the fluid flowing of piezoelectric pump pumping is more steady；Drops solid tube flowing structure is relative to two-dimensional structure
Runner, flow resistance coefficient is smaller, and fluid can reduce turbulent flow and eddy flow, further, drops when flowing through the drops flow tube
Fluid that three-dimensional flow tube passes through is presented class streamline flow structure, the curved-surface structure and tube wall to smoothly transit makes fluid exist
Speed can occur that continuity is slowly varying when flowing through, to increase the stationarity of fluid flowing；Further, since the drops is vertical
The flow resistance of body flow tube is small, thus, it is possible to reduce the energy that when the fluid is flowing is lost, to improve the transfer efficiency of fluid.
2, the upside of pump chamber is mutually inverted and is vertically installed in drops solid flow tube, within a duty cycle, piezoelectricity
In the suction stage of pump, the fluid volume for entering pump chamber from the first drops solid flow tube is greater than from the second drops solid stream
Pipe enters the fluid volume of pump chamber, and in the scheduling stage of piezoelectric pump, from the fluid of the first drops solid flow tube discharge
Volume is less than the fluid volume being discharged from the second drops solid flow tube, so that fluid is along the first drops solid flow tube one
Effluent is to the second drops solid flow tube side, and then the Valveless piezoelectric pump can be realized macroscopical one-way flow of fluid.
3, the value range of the ratio between the radius of half bulb and the length of rotary table pipe is 0.1 < R/L < 0.35, can
Enough guarantee good turbulent flow inhibitory effect, the consumption of fluid flow energy can also be reduced.
4, the piezoelectric pump pump housing includes the upper cover being detachably connected and pedestal, and piezoelectric vibrator is fixedly arranged on the top side of pump chamber, and on
Lid is provided with through-hole corresponding with piezoelectric vibrator, and piezoelectric pump uses dismountable upper cover and understructure, so that entirely
Piezoelectric pump dismounting maintenance is more convenient, and is provided with through-hole in the middle part of upper cover, thus passes through convenient for electric-control system with piezoelectric vibrator and leads
Line is directly connected to, further, since piezoelectric vibrator in vibration processes repeatedly there are air-flow, the through-hole of upper cover can effectively make
Air-flow flowing is obtained, guarantees that piezoelectric vibrator stabilization is vibrated repeatedly.
5, the top side of each drops solid flow tube is respectively connected with curved bend broken pipe, and the nozzle of two curved bend broken pipes is opposite
Setting, curved bend broken pipe make fluid have a buffering course when passing in and out drops solid flow tube, further improve stream
Body flowing stability, in addition, the nozzle for the curved bend broken pipe being disposed opposite to each other make the fluid of two drops solid flow tubes into
Outlet is located at the two sides of the pump housing, and thus fluid will not interfere with each other when through above-mentioned drops solid flow tube, into
And make the entire flow process of fluid more steady, further increase the stability of Valveless piezoelectric pump pumping fluid.
Detailed description of the invention
Fig. 1 is the schematic diagram of the section structure that the Valveless piezoelectric pump of three-dimensional flow tube is equipped in the utility model embodiment.
Fig. 2 is the Valveless piezoelectric pump frame and drops solid flow tube phase that three-dimensional flow tube is equipped in the utility model embodiment
The structural schematic diagram of cooperation.
Fig. 3 is equivalent Taper Pipe corresponding to drops solid flow tube in the utility model embodiment.
In figure: the 1- piezoelectric pump pump housing, 2- drops solid flow tube, 3- pump chamber, 4- piezoelectric vibrator, 5- first runner,
6- second flow channel, 7- sealing ring, 8- connecting tube, 9- curved bend broken pipe, the equivalent Taper Pipe of 10-；11- upper cover, 12- pedestal,
Half bulb of 21-, 22- rotary table pipe, 2a- the first drops solid flow tube, 2b- the second drops solid flow tube, 41- metal
Piece, 42- piezoelectric ceramic piece, the upside 101- Taper Pipe, the downside 102- Taper Pipe；11a- through-hole.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
It should be understood that various information are described in the utility model using term " first ", " second " etc., but these
Information should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from this
In the case where utility model range, " first " information can also be referred to as " second " information, and similar, " second " information can also be with
Referred to as " first " information.
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of Valveless piezoelectric pumps equipped with three-dimensional flow tube, including piezoelectric pump to pump
Body 1, electric-control system and two drops solid flow tubes 2, the piezoelectric pump pump housing 1 are provided with pump chamber 3, setting in the pump chamber 3
There is the piezoelectric vibrator 4 for adjusting its volume, the piezoelectric vibrator 4 is electrically connected with the electric-control system, it should be pointed out that electricity
Control system provides periodically variable alternating voltage, through electric-control system when 4 both ends of piezoelectric vibrator apply voltage, piezoelectric ceramics
The radial expansion under inverse piezoelectric effect of piece 42 to make 4 bending deformation of piezoelectric vibrator, and then changes the volume of pump chamber 3, specifically
Ground, when the positive bending of piezoelectric vibrator 4,3 volume of pump chamber increases, and cavity fluid pressure reduces, and piezoelectric pump external fluid enters to
In pump chamber 3, and when piezoelectric vibrator 4 is to when back-flexing, 3 volume of pump chamber reduces, and cavity fluid pressure increases, and fluid is from pump chamber 3
It flows out to outside pump chamber 3, the fluid pumping procedure of piezoelectric pump is realized in the cyclically-varying of piezoelectric vibrator 4；The piezoelectric pump pump housing 1
It is additionally provided with the first runner 5 being connected with the pump chamber 3 and second flow channel 6, the first runner 5 and the second flow channel 6
It is respectively arranged with the drops solid flow tube 2, the inner wall of the drops solid flow tube 2 is curved-surface structure and its inner wall
Face smoothly transits, and 2 structure of drops solid flow tube is relative to two-dimensional structure runner, and flow resistance coefficient is smaller, and fluid flows through the water
Turbulent flow and eddy flow can be reduced when drop-wise flow tube, further, the fluid that drops solid flow tube 2 passes through is along class streamline
The flowing of type structure, curved-surface structure and the tube wall to smoothly transit fluid speed when flowing through that continuity occurs slowly to become
Change, to increase the stationarity of fluid flowing；Further, since the flow resistance of the drops solid flow tube 2 is small, thus, it is possible to reduce stream
The energy that body is lost in flowing, to improve the transfer efficiency of fluid.Specifically, Fig. 3 is participated in, in the present embodiment, with the
It is further described for one drops solid flow tube 2a, the first drops solid flow tube 2a can be similar to equivalent Taper Pipe
10 comprising two mutual inverted upside Taper Pipes 101 and downside Taper Pipe 102, when fluid is from the first drops solid flow tube 2a
When upside enters pump chamber 3, fluid has diffusion when the upside Taper Pipe 101 of the first drops solid flow tube 2a flows, and
Downside Taper Pipe 102 can inhibit the diffusion effect of fluid, it can thus be appreciated that flow resistance corresponding to equivalent Taper Pipe 10 is less than single
The corresponding flow resistance of taper tube flowing structure, correspondingly, when fluid is flowed out from pump chamber 3, fluid is the first drops solid flow tube 2a's
There is convergence effect when downside Taper Pipe 102 flows, and upside Taper Pipe 101 inhibits the convergence effect, and then equivalent cone
Flow resistance corresponding to 10 structure of pipe is less than the corresponding flow resistance of single taper tube flowing structure, i.e. the flow resistance of drops solid flow tube 2 is small
The flow resistance corresponding to single taper tube flowing structure, further, since 2 inner wall of drops solid flow tube is relative to equivalent Taper Pipe
10 is more smooth, and the flow resistance of drops solid flow tube 2 is again smaller than flow resistance corresponding to equivalent 10 structure of Taper Pipe, in summary, water
The flow resistance coefficient of drop-wise solid flow tube 2 is less than the flow resistance coefficient of traditional two-dimentional flow passage structure and single tapered runner structure,
It is flowed in traditional flow tube relative to fluid, the turbulent flow that drops solid flow tube 2 can effectively inhibit fluid flowing to generate increases
The stationarity of fluid flowing.
Based on above technical scheme, periodically variable piezoelectric vibrator 4 is capable of the volume of periodically-varied pump chamber 3, thus
So that piezoelectric pump completes the pumping procedure of fluid, and first runner 5 and second flow channel 6 have a guide functions, enable to
Fluid flows stabilization when passing in and out pump chamber 3, so that the fluid flowing of piezoelectric pump pumping is more steady；Drops solid stream
For 2 structure of pipe relative to two-dimensional structure runner, flow resistance coefficient is smaller, fluid can be reduced when flowing through the drops flow tube turbulent flow and
Eddy flow, further, fluid that drops solid flow tube passes through are presented class streamline flow structure, curved-surface structure and smooth
The tube wall of transition fluid speed when flowing through is occurred continuity is slowly varying, thus increase fluid flowing it is steady
Property；Further, since the flow resistance of the drops solid flow tube 2 is small, thus, it is possible to reduce the energy that when the fluid is flowing is lost, thus
Improve the transfer efficiency of fluid.
In the present embodiment, two drops solid flow tubes 2 are mutually inverted and are vertically installed in the upper of the pump chamber 3
Side, each drops solid flow tube 2 include large diameter end and small-caliber end, and the drops on the first runner 5 is vertical
2 large diameter end of body flow tube is arranged upward, and the small-caliber end of the drops solid flow tube 2 in the second flow channel 6 is set upward
It sets.Based on above structure, remember that the drops solid flow tube 2 connecting with first runner 5 is the first drops solid flow tube 2a, with the
The drops solid flow tube 2 of two runners 6 connection is the second drops solid flow tube 2b, within a duty cycle, when pump chamber 3
When volume increases, internal pressure is less than external pressure, and fluid media (medium) will enter to pump chamber 3 from first runner 5 and second flow channel 6
It is interior, and the large diameter end of the first drops solid flow tube 2a is arranged upward, the small-caliber end court of the second drops solid flow tube 2b
Upper setting, when fluid flows into pump chamber 3 under upper, the flow resistance of the first drops solid flow tube 2a is than the second drops solid flow tube
The flow resistance of 2b is small, to be greater than from the fluid volume that the first drops solid flow tube 2a enters pump chamber 3 vertical from the second drops
Body flow tube 2b enters the fluid volume of pump chamber 3, which constitutes the suction stage of piezoelectric pump；Correspondingly, when the volume of pump chamber 3
When reduction, the fluid in pump chamber 3 passes through the first drops solid flow tube 2a and the second drops solid flow tube 2b discharge respectively, by
In the reason of the flow resistance, the fluid volume being discharged from the first drops solid flow tube 2a is less than to be arranged from the second drops solid flow tube 2b
Fluid volume out, which constitutes the scheduling stage of piezoelectric pump, so that fluid is along the first drops solid flow tube 2a mono-
Effluent is to the second side drops solid flow tube 2b, and then the Valveless piezoelectric pump can be realized macroscopical one-way flow of fluid.
Specifically, the drops solid flow tube 2 includes half bulb 21 and rotary table pipe 22, and the rotary table pipe 22 includes roundlet
End and big nose circle, the radius of half bulb 21 is equal with the radius of big nose circle of the rotary table pipe 22, half bulb 21 and
The big nose circle of the rotary table pipe 22 is connected, and described half bulb, 21 one end be the large diameter end, the rotary table pipe 22 it is small
Nose circle is the small-caliber end, and the composed structure of half bulb 21 and rotary table pipe 22 makes fluid that streamline flow state be presented, and
The drops solid flow tube 2 of the structure is easy to process, low in cost.
Preferably, the radius for remembering half bulb 21 is R, and the length of the rotary table pipe 22 is L, the half of half bulb 21
The value range of ratio between diameter and the length of the rotary table pipe 22 is 0.1 < R/L < 0.35.It should be pointed out that working as R/L
Ratio it is bigger when, the drops solid flow tube 2 is stronger for the inhibitory effect of turbulent flow, but can correspondingly consume more energy
Amount, can guarantee good turbulent flow inhibitory effect in this example, when the ratio range of R/L falls in 0.1-0.35, can also be with
The consumption of fluid flow energy is reduced, is preferred embodiment.And the specific ratio of R/L needs to consider according to the actual situation, needs to comment
Use process is estimated for the specific requirements of turbulent flow inhibition level and energy loss amount.
Wherein, the piezoelectric pump pump housing 1 includes the upper cover 11 being detachably connected and pedestal 12, in the present embodiment upper cover 11
It is specifically detachably connected using bolt with pedestal 12, the type of attachment of bolt is low in cost and convenient for disassembly and assembly, the upper cover
11 are buckled in the upside of the pedestal 12, and fluted, the vallecular cavity composition pump chamber 3 of the groove, institute is arranged in the pedestal 12
The top side that piezoelectric vibrator 4 is fixedly arranged on the pump chamber 3 is stated, and the upper cover 11 is provided with lead to corresponding with the piezoelectric vibrator 4
Hole 11a.Piezoelectric pump uses 12 structure of dismountable upper cover 11 and pedestal, so that entire piezoelectric pump dismounting maintenance is more square
Just, through-hole 11a and in the present embodiment is provided in the middle part of upper cover 11, thus convenient for electric-control system and piezoelectric vibrator 4 by conducting wire into
Row is directly connected to, further, since there are air-flows in vibration processes repeatedly for piezoelectric vibrator 4, the through-hole 11a of upper cover 11 can be effective
So that air-flow flows, guarantee that the stabilization of piezoelectric vibrator 4 is vibrated repeatedly.And in this example, 4 edge of piezoelectric vibrator then uses sealant
It is sealed, and then ensures the Valveless piezoelectric pump favorable sealing property.
In addition, the piezoelectric vibrator 4 includes sheet metal 41 and the piezoelectric ceramic piece 42 being adhered on the upside of the sheet metal 41,
The sheet metal 41 and the piezoelectric ceramic piece 42 are circle, and the diameter of the piezoelectric ceramic piece 42 is less than the sheet metal
41 diameter thereby guarantees that piezoelectric ceramic piece can be pasted on sheet metal completely, and effectively by the radial vibration of potsherd
Become axial vibration, so that 4 oscillating aging fruit of piezoelectric vibrator is obvious, the volume variation of pump chamber 3 is also become apparent from.Further
Ground, in order to enable the mounting structure of piezoelectric vibrator 4 is more stable, the inner wall of the upper cover 11 is equipped with card slot, the sheet metal 41
It is connected in the card slot.
In the present embodiment, sealing ring 7 is provided between the piezoelectric vibrator 4 and the pump chamber 3, sealing ring 7 to press
Electric tachometer indicator 4 is mutually isolated before with pump chamber 3, and guarantees that the leakproofness of pump chamber 3 is good, specifically, the sealing ring 7 in the present embodiment
Chemical property for silica gel ring, silica gel ring is stablized, and guarantees that favorable sealing property, the pedestal 12 are arranged on the upside of the pump chamber 3
There is step, the sealing ring 7 is set on the step surface of the step, so that the installation of sealing ring 7 is more stable.
It is further preferred that further including connecting tube 8, each drops solid flow tube 2 passes through the connecting tube 8 respectively
It is connected with the piezoelectric pump pump housing 1, and each connecting tube 8 is connected with the first runner 5 and the second flow channel 6 respectively
Logical, the setting of connecting tube 8 is so that the installation of each drops solid flow tube 2 is more convenient, and drops solid flow tube 2 is enabled to lead to
It crosses different connecting tubes 8 to be connected in different Valveless piezoelectric pumps, so that its scope of application is wider.
In the present embodiment, the top side of each drops solid flow tube 2 is respectively connected with curved bend broken pipe 9, and two institutes
The nozzle for stating curved bend broken pipe 9 is disposed opposite to each other, and curved bend broken pipe 9 makes fluid have one when passing in and out drops solid flow tube 2
A buffering course further improves the stability of fluid flowing, in addition, the nozzle for the curved bend broken pipe 9 being disposed opposite to each other makes
The fluid inlet and outlet of two drops solid flow tubes 2 is located at the two sides of the pump housing, and thus fluid is vertical by above-mentioned drops
It will not be interfered with each other when body flow tube 2, so that the entire flow process of fluid is more steady, further increase the valveless
The stability of piezoelectric pump pumping fluid.
Using the Valveless piezoelectric pump for being equipped with three-dimensional flow tube of the utility model embodiment, periodically variable piezoelectric vibrator 4
It is capable of the volume of periodically-varied pump chamber 3, so that the pumping procedure of piezoelectric pump completion fluid, and first runner 5 and second
Runner 6 has a guide functions, and fluid is enabled to flow stabilization when passing in and out pump chamber 3, so that the piezoelectric pump pumps
Fluid flowing it is more steady；2 structure of drops solid flow tube is relative to two-dimensional structure runner, and flow resistance coefficient is smaller, fluid
Turbulent flow and eddy flow can be reduced when flowing through the drops flow tube, further, the fluid that drops solid flow tube 2 passes through is in
Existing class streamline flow structure, the curved-surface structure and tube wall to smoothly transit enables fluid speed when flowing through that continuity occurs
It is slowly varying, to increase the stationarity of fluid flowing；Further, since the flow resistance of the drops solid flow tube 2 is small, thus, it is possible to
The energy that when the fluid is flowing is lost is reduced, to improve the transfer efficiency of fluid.
In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "top", "bottom" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and replacement can also be made, these change
It also should be regarded as the protection scope of the utility model into replacement.
Claims (10)
1. a kind of Valveless piezoelectric pump equipped with three-dimensional flow tube, it is characterised in that: including the piezoelectric pump pump housing, electric-control system and two water
Drop-wise solid flow tube, the piezoelectric pump pump housing are provided with pump chamber, and the piezoelectricity vibration for adjusting its volume is provided in the pump chamber
Son, the piezoelectric vibrator are electrically connected with the electric-control system；The piezoelectric pump pump housing, which is additionally provided with, to be connected with the pump chamber
First runner and second flow channel, the first runner and the second flow channel are respectively arranged with the drops solid stream
The inner wall of pipe, the drops solid flow tube is curved-surface structure and inner wall surface thereof smoothly transits.
2. the Valveless piezoelectric pump according to claim 1 for being equipped with three-dimensional flow tube, it is characterised in that: two drops are vertical
The upside of the pump chamber is mutually inverted and is vertically installed in body flow tube, and each drops solid flow tube includes large diameter end and small
Bore end, the drops solid flow tube large diameter end on the first runner are arranged upward, the institute in the second flow channel
The small-caliber end for stating drops solid flow tube is arranged upward.
3. the Valveless piezoelectric pump according to claim 2 for being equipped with three-dimensional flow tube, it is characterised in that: the drops solid stream
Pipe includes half bulb and rotary table pipe, and the rotary table pipe includes small nose circle and big nose circle, the radius and the rotary table of half bulb
The radius of the big nose circle of pipe is equal, and half bulb is connected with the big nose circle of the rotary table pipe, and half bulb one end is
The large diameter end, the small nose circle of the rotary table pipe are the small-caliber end.
4. the Valveless piezoelectric pump according to claim 3 for being equipped with three-dimensional flow tube, it is characterised in that: the half of note half bulb
Diameter is R, and the length of the rotary table pipe is L, the value of the ratio between the radius of half bulb and the length of the rotary table pipe
Range is 0.1 < R/L < 0.35.
5. the Valveless piezoelectric pump according to claim 1 for being equipped with three-dimensional flow tube, it is characterised in that: the piezoelectric pump pump housing packet
The upper cover being detachably connected and pedestal are included, the upper cover is buckled in the upside of the pedestal, and the pedestal setting is fluted, described
The vallecular cavity of groove constitutes the pump chamber, and the piezoelectric vibrator is fixedly arranged on the top side of the pump chamber, and the upper cover is provided with and institute
State the corresponding through-hole of piezoelectric vibrator.
6. the Valveless piezoelectric pump according to claim 5 for being equipped with three-dimensional flow tube, it is characterised in that: the piezoelectric vibrator includes
Sheet metal and the piezoelectric ceramic piece being adhered on the upside of the sheet metal, the sheet metal and the piezoelectric ceramic piece are circle,
And the diameter of the piezoelectric ceramic piece is less than the diameter of the sheet metal.
7. the Valveless piezoelectric pump according to claim 6 for being equipped with three-dimensional flow tube, it is characterised in that: the inner wall of the upper cover is set
There is card slot, the sheet metal is connected in the card slot.
8. the Valveless piezoelectric pump according to claim 5 for being equipped with three-dimensional flow tube, it is characterised in that: the piezoelectric vibrator and institute
It states and is provided with sealing ring between pump chamber, the pedestal is provided with step on the upside of the pump chamber, and the sealing ring is set to described
On the step surface of step.
9. the Valveless piezoelectric pump according to any one of claims 1 to 8 for being equipped with three-dimensional flow tube, it is characterised in that: further include
Connecting tube, each drops solid flow tube is connected by the connecting tube with the piezoelectric pump pump housing respectively, and each institute
Connecting tube is stated to be connected with the first runner and the second flow channel respectively.
10. the Valveless piezoelectric pump according to any one of claims 1 to 8 for being equipped with three-dimensional flow tube, it is characterised in that: each described
The top side of drops solid flow tube is respectively connected with curved bend broken pipe, and the nozzle of two curved bend broken pipes is disposed opposite to each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821019703.9U CN208380824U (en) | 2018-06-28 | 2018-06-28 | A kind of Valveless piezoelectric pump equipped with three-dimensional flow tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821019703.9U CN208380824U (en) | 2018-06-28 | 2018-06-28 | A kind of Valveless piezoelectric pump equipped with three-dimensional flow tube |
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| CN208380824U true CN208380824U (en) | 2019-01-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612643A (en) * | 2018-06-28 | 2018-10-02 | 广州大学 | A kind of Valveless piezoelectric pump being equipped with three-dimensional flow tube |
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2018
- 2018-06-28 CN CN201821019703.9U patent/CN208380824U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612643A (en) * | 2018-06-28 | 2018-10-02 | 广州大学 | A kind of Valveless piezoelectric pump being equipped with three-dimensional flow tube |
| CN108612643B (en) * | 2018-06-28 | 2024-03-19 | 广州大学 | Valveless piezoelectric pump with three-dimensional flow pipe |
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