CN202165254U - Valve-less piezoelectric pump of hyperbolic spiral flow pipe - Google Patents
Valve-less piezoelectric pump of hyperbolic spiral flow pipe Download PDFInfo
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- CN202165254U CN202165254U CN2011202106534U CN201120210653U CN202165254U CN 202165254 U CN202165254 U CN 202165254U CN 2011202106534 U CN2011202106534 U CN 2011202106534U CN 201120210653 U CN201120210653 U CN 201120210653U CN 202165254 U CN202165254 U CN 202165254U
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- pump
- stream pipe
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- hyperbolic conchoid
- flow pipe
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Abstract
The utility model relates to a valve-less piezoelectric pump of a hyperbolic spiral flow pipe, which comprises a pump body formed by an upper cover and a lower cover that are connected with each other in a sealing way; a pump cavity containing a piezoelectric vibrator is arranged between the upper cover and the lower cover; the pump cavity is provided with a first hyperbolic spiral flow pipe and a first direct current (DC) pipe; one end of the first hyperbolic spiral flow pipe is connected with the pump cavity, and the other end of the first hyperbolic spiral flow pipe is connected with a fluid inlet arranged on the pump body; one end of the first DC pipe is connected with the pump cavity, and the other end of the first DC pipe is connected with a fluid outlet arranged on the pump body. By organically combining the spiral flow pipe technology and the piezoelectric technology, the valve-less piezoelectric pump of the hyperbolic spiral flow pipe adopts the hyperbolic spiral flow pipe, thus having better one-way fluidity compared with a tapered flow pipe valve-less piezoelectric pump, reducing the energy loss of the flowing fluid, and improving the working efficiency of the pump; meanwhile, the application scope of the spiral flow pipe technology in the fields such as heat transfer, mixing and the like can be expanded, so that the valve-less piezoelectric pump of the hyperbolic spiral flow pipe is especially applicable to the sensitive environment of magnetic field.
Description
Technical field
The utility model relates to a kind of Valveless piezoelectric pump, relates in particular to a kind of Valveless piezoelectric pump that adopts scroll stream pipe.
Background technique
Press valve body classification if belong to the piezoelectric pump of positive displacement, can be divided into valve and Valveless piezoelectric pump are arranged.If valve is defined as: in the suction and discharge process of pump; Have a period at least, make between pump chamber and suction port or the exhaust port, produce disconnected mechanical device; So so-called " valveless " is exactly: at any time, all be communicated with between pump chamber and suction port or the exhaust port.At this moment, rely on special mechanical device during the one-way flow of fluid.This device has utilized the character of fluid, makes pump chamber be communicated with exhaust port with suction all the time, and can order about one-directional fluid flow.At present, the Valveless piezoelectric pump parts that adopt inverted each other collapsible tube and expanding duct to be used as controlling one-directional fluid flow relatively are typically the conical flow pipe more.Fig. 1 is a conical flow pipe Valveless piezoelectric pump, and the characteristics of this pump are simple in structure, can realize microminiaturization; But there is the sudden change of different cross section size in conical stream pipe, and energy loss is big, and flow is less, reverse fluid stopping poor performance, and these shortcomings have all influenced the application of piezoelectric pump in practical field.
Because spiral flow tube has characteristics such as superior structural characteristics, spontaneous centrifugal field, secondary flow and high efficient heat exchanging rate; Make the spiral flow tube technology in equal extensive application in field such as heat transfer, mixing; And have in recent years the researcher with the spiral flow tube technical application in doughnut mass transfer separation processes such as micro-filtration, nanofiltration, infiltration and film distillations, all obtained good effect.But these are used all is under the external world gives the prerequisite of flow of fluid power, to carry out; Like this spiral flow tube The Application of Technology is restricted; If the additional power source is an electromagnetic machine; That place at some electromagnetic susceptibilities just can not be used, and accurately controls following time of environment of fluid flow at needs, can not meet the demands.
The model utility content
1. technical problem: the technical problem that the utility model will solve provides a kind of Miniaturized, has better one-way flow characteristic, but the hyperbolic conchoid that fluid flow is accurately controlled stream pipe Valveless piezoelectric pump.Overcome shortcomings such as the reverse fluid stopping poor performance of existing Valveless piezoelectric pump, simultaneously, enlarged the application area of spiral flow tube technology in fields such as heat transfer, mixing.
2. technological scheme: in order to solve above-mentioned technical problem; The hyperbolic conchoid stream pipe Valveless piezoelectric pump of the utility model comprises the pump housing that is tightly connected and is formed by loam cake and lower cover; Be provided with the pump chamber that accommodates piezoelectric vibrator between loam cake and the lower cover, pump chamber is provided with first hyperbolic conchoid stream pipe and first DC tube; Described first hyperbolic conchoid stream Guan Yiduan is connected with pump chamber, and the other end is connected with fluid inlet; Described first DC tube, one end is connected with pump chamber, and the other end is connected with fluid output.Described hyperbolic conchoid stream pipe is the stream pipe of plane bending, because the central axis of this stream pipe belongs to hyperbolic conchoid, therefore should flow pipe called after " hyperbolic conchoid stream pipe ".Hyperbolic conchoid is claimed helical reciprocal again, and promptly the track of the point that is inversely proportional to of utmost point footpath and polar angle is as shown in Figure 2.This curve sets out in limit, is the inverse of Archimedes spiral, and an asymptote that is parallel to pole axis is arranged.The polar equation of hyperbolic conchoid is:
rθ＝c
Wherein c is a constant, and r is utmost point footpath, and θ is a polar angle, and y=c is an asymptote.
Described first hyperbolic conchoid stream pipe can directly be connected with pump chamber, also can be connected with pump chamber through one second DC tube.
One end of described first DC tube is communicated with pump chamber, and the other end directly or through second hyperbolic conchoid stream pipe is connected with fluid output; Usually, the spiral flow tube of described first hyperbolic conchoid stream pipe for being provided with for the starting point clockwise direction with the fluid inlet, terminal point is tie point that links to each other with pump chamber or the tie point that links to each other with second DC tube; Described second hyperbolic conchoid stream pipe is for being the spiral flow tube that starting point counterclockwise is provided with the fluid output, and its terminal point is the tie point that links to each other with first DC tube.
Described pump chamber comprises and is positioned at lower cover and opening first groove towards loam cake, and is positioned at loam cake and opening second groove towards first groove, and first, second slot opening size is identical, constitutes cavity with piezoelectric vibrator.Described second recess edge is designed to stair-stepping through hole, and piezoelectric vibrator is bonded and fixed in second groove.
The circular vibrating reed that described piezoelectric vibrator is generally pasted by the piezoelectric ceramic of circle and tinsel, for the shape with the piezoelectric vibrator of circle adapts, the cross section of described pump chamber is rounded.
For the ease of processing, first, second hyperbolic conchoid stream pipe all directly carves on lower cover with first, second DC tube and first groove, and promptly hyperbolic conchoid stream pipe, DC tube and first groove and lower cover are one; Simultaneously, identical rectangular of the cross section of first, second hyperbolic conchoid stream pipe and first, second DC tube.
During the hyperbolic conchoid of present technique scheme stream pipe Valveless piezoelectric pump work, piezoelectric ceramic and tinsel as the two poles of the earth, when the piezoelectric vibrator indirect current; The piezoelectric constant sector-meeting produces along its dilatation radially; Because piezoelectric ceramic and tinsel are bonded to one, and the radial expansion of piezoelectric ceramic and tinsel is different, so when piezoelectric ceramic produces dilatation radially; Tinsel also can produce dilatation; And flexible direction and piezoelectric ceramic are opposite, and then piezoelectric vibrator will inevitably produce vertically the reciprocal deformation vibration of (normal orientation of piezoelectric ceramic), the power source of piezoelectric vibrator as piezoelectric pump; Along with the axially back and forth deformation vibration of piezoelectric vibrator, thereby cause the volume cyclically-varying of piezoelectric pump pump chamber.Piezoelectric vibrator produces axial vibration under inverse piezoelectric effect, cause that pump chamber changes; Generally can an operation cycle of piezoelectric pump be divided into two stages: arrive upper dead center (maximum displacement of piezoelectric vibrator away from equilibrium location outside pump chamber) through the equilibrium position from lower dead centre (maximum displacement of piezoelectric vibrator away from equilibrium location in pump chamber) and be the suction journey stage of pump; Arriving lower dead centre from upper dead center through the equilibrium position is the scheduling stage of pump.Inhaling the journey stage, fluid gets into pump chamber along first hyperbolic conchoid stream pipe and first DC tube; In the scheduling stage, fluid is along flowing out pump chamber along first hyperbolic conchoid stream pipe and first DC tube.Owing to receive the influence of rotation of the earth coriolis force and fluid spin coriolis force; Make along the suffered resistance of the fluid of pipe inflow of first hyperbolic conchoid stream and outflow inequality; And the volume size of inflow or effluent fluid is inversely proportional to the flow resistance size that flows pipe; Therefore comprehensive the suction journey and scheduling stage, the fluid volume that flows into pump chamber along first hyperbolic conchoid stream pipe is more than the fluid volume that flows out pump chamber, makes that having a net flow in the whole cycle flows from first hyperbolic conchoid of pump and manage first DC tube that flows to pump; See that from macroscopic view piezoelectric pump always makes fluid flow into from first hyperbolic conchoid stream pipe, flow out, thereby realized the one-way flow of fluid, realized the function of pump from first DC tube.
In like manner, when the hyperbolic conchoid of present technique scheme stream pipe Valveless piezoelectric pump has two hyperbolic conchoids stream pipes, piezoelectric ceramic and tinsel as the two poles of the earth; When the piezoelectric vibrator indirect current; Piezoelectric vibrator produces axial vibration under inverse piezoelectric effect, cause that pump chamber changes, and driving fluid comes and goes along two hyperbolic conchoid stream pipes and flows; Owing to receive the influence of rotation of the earth coriolis force and fluid spin coriolis force; To producing different effects along counterclockwise and right handed fluid, make along the resistance that hyperbolic conchoid stream pipe flows into and the fluid that flows out is suffered inequalityly, and flow into or flow resistance size that the volume size of effluent fluid and stream are managed is inversely proportional to; So when the pump chamber volume increases; Fluid is from first hyperbolic conchoid stream pipe and second hyperbolic conchoid stream pipe inflow pump chamber, and piezoelectric pump was in and inhaled the journey stage this moment, but inequality from the fluid volume of two stream pipe inflow pump chambers; When the pump chamber volume reduced, fluid was managed the outflow pump chamber from first hyperbolic conchoid stream pipe and second hyperbolic conchoid stream, and this moment, piezoelectric pump was in the scheduling stage, but inequality from the fluid volume of two stream pipe outflow pump chambers; Analysis is at piezoelectric pump from two stream pipes and inhales journey and scheduling during the stage; How much may be summarized to be of the fluid volume that flows into and flow out: piezoelectric pump be in inhale journey during the stage incoming fluid volume many, then piezoelectric pump be in scheduling during the stage volume of effluent fluid few; Piezoelectric pump be in inhale journey during the stage incoming fluid volume few, then piezoelectric pump be in scheduling during the stage volume of effluent fluid many; See that from macroscopic view piezoelectric pump always makes fluid flow pipe from one and flows into, and manages outflow from another stream, thereby has realized the one-way flow of fluid, has realized the function of pump.
3. beneficial effect: the hyperbolic conchoid stream pipe Valveless piezoelectric pump of the utility model organically combines spiral flow tube technology and piezo technology; Adopted hyperbolic conchoid stream pipe; Compare with conical flow pipe Valveless piezoelectric pump and to have one-way flow property preferably; Reduce the energy loss of streaming flow, improved the working efficiency of pump; Simultaneously, enlarged the application area of spiral flow tube technology, especially be useful under the environment to magnetic-field-sensitive in fields such as heat transfer, mixing; In addition, in the Valveless piezoelectric pump of the utility model, the stream pipe is the rectangular cross-section, and its processing is close to plane processing, compares with circular section stream pipe, and especially under minute yardstick, the processing of rectangular cross-section stream pipe is fairly simple.
Description of drawings
Fig. 1 is a conical flow pipe Valveless piezoelectric pump schematic representation;
Fig. 2 is a hyperbolic conchoid schematic representation (c=2) under the rectangular coordinate system;
Fig. 3 is the perspective exploded view of first embodiment's hyperbolic conchoid stream pipe Valveless piezoelectric pump;
Fig. 4 is the perspective exploded view of second embodiment's hyperbolic conchoid stream pipe Valveless piezoelectric pump;
Fig. 5 is a hyperbolic conchoid stream pipe Valveless piezoelectric pump overall structure plan view;
Fig. 6 is a hyperbolic conchoid stream pipe Valveless piezoelectric pump overall structure A-A sectional view;
Fig. 7 is a hyperbolic conchoid stream pipe Valveless piezoelectric pump pump loam cake plan view;
Fig. 8 is a hyperbolic conchoid stream pipe Valveless piezoelectric pump pump loam cake B-B sectional view;
Fig. 9 is first embodiment's a hyperbolic conchoid stream pipe Valveless piezoelectric pump pump lower cover plan view;
Figure 10 is second embodiment's a hyperbolic conchoid stream pipe Valveless piezoelectric pump pump lower cover plan view;
Figure 11 is a hyperbolic conchoid stream pipe Valveless piezoelectric pump pump lower cover C-C sectional view;
Figure 12 is the piezoelectric vibrator schematic representation.
Embodiment
Embodiment one:
Like Fig. 3, Fig. 6 and shown in Figure 9, the hyperbolic conchoid of present embodiment stream pipe Valveless piezoelectric pump comprises the pump housing of being made up of loam cake that is tightly connected 2 and lower cover 31, is provided with the pump chamber 5 that accommodates piezoelectric vibrator 4 between loam cake 2 and the lower cover 3; Also comprise one first hyperbolic conchoid stream pipe 6 and first DC tube 7 between loam cake 2 and the lower cover 3; Described first hyperbolic conchoid stream pipe 6 one ends are connected with fluid inlet 11 on being arranged on the pump housing 1, and the other end passes through second DC tube 61 and is connected with pump chamber 5; Described first DC tube, 7 one ends are connected with pump chamber 5, and the other end is connected with fluid output 12 on being arranged on the pump housing 1; First hyperbolic conchoid stream pipe 6, first DC tube 7 and second DC tube 61 all are arranged on the lower cover 3.Loam cake 2 uses 6 bolts (nut) 9 to link together with lower cover 3 through bolt hole on every side 10.
As shown in Figure 9, described first hyperbolic conchoid stream pipe 6 be with fluid inlet 11 be the starting point dextrorotation to the stream pipe, terminal point is the tie point with second DC tube 61.
In the present embodiment, described fluid inlet 11 and fluid output 12 are arranged on the both sides of pump chamber 5, and fluid inlet 11, first hyperbolic conchoid stream pipe 6, pump chamber 5, first DC tube 7 and fluid output 12 form the passage that fluids flow.
Like Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and shown in Figure 11; Described pump chamber 5 cross sections are rounded; Comprise and be positioned at lower cover 3 and opening first groove 31 towards loam cake 2; And being positioned at loam cake 2 and opening second groove 21 towards first groove 31, first, second slot opening size is identical, constitutes cavity with piezoelectric vibrator 4.Described second groove, 21 edge designs become stair-stepping through hole, and piezoelectric vibrator 4 is bonded and fixed in second groove 21.
In the present embodiment, use one-sided type piezoelectric vibrator.Circular vibrating reed shown in figure 12, that piezoelectric vibrator 4 is generally pasted by the piezoelectric ceramic 41 of circle and tinsel 42.
In order to prevent the joint seepage, can evenly be coated with silica gel in the joint of parts and seal.
Embodiment two:
As shown in Figure 4; The main structure of present embodiment and embodiment one are basic identical; Different is to contain two hyperbolic conchoid stream pipes in the present embodiment, and promptly first hyperbolic conchoid stream pipe, 6 and second hyperbolic conchoid stream pipe, 8, two stream pipes are that symmetry axis is symmetrical with pump chamber 5 center lines.
Shown in figure 10, described first hyperbolic conchoid stream pipe 6 is a starting point with fluid inlet 11, is terminal point with the tie point that links to each other with second DC tube 61, integral body be dextrorotation to; Described second hyperbolic conchoid stream pipe 8 is a starting point with fluid output 12, is terminal point with the tie point that is connected with first DC tube 7, and integral body is counterclockwise side's rotation direction.
Claims (9)
1. a hyperbolic conchoid stream is managed Valveless piezoelectric pump; Comprise the pump housing of forming by loam cake that is tightly connected (2) and lower cover (3) (1); Be provided with the pump chamber (5) that accommodates piezoelectric vibrator (4) between loam cake (1) and the lower cover (2), it is characterized in that, pump chamber (5) is provided with first hyperbolic conchoid stream pipe (6) and first DC tube (7); Described first hyperbolic conchoid stream pipe (6) one ends are connected with pump chamber (5); The other end is connected with fluid inlet (11), and described first DC tube (7) one ends are connected with pump chamber (5), and the other end is connected with fluid output (12).
2. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 1 is characterized in that described first hyperbolic conchoid stream pipe (6) is connected with pump chamber (5) through second DC tube (61).
3. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 1 and 2 is characterized in that described first DC tube (7) is connected with fluid output (12) through second hyperbolic conchoid stream pipe (8).
4. hyperbolic conchoid according to claim 1 stream pipe Valveless piezoelectric pump is characterized in that, described first hyperbolic conchoid stream pipe (6) be with fluid inlet (11) be the starting point dextrorotation to the stream pipe.
5. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 3 is characterized in that said second hyperbolic conchoid stream pipe (8) is to be the stream pipe of the counterclockwise rotation direction of starting point with fluid output (12).
6. according to the described hyperbolic conchoid stream of right 1 pipe Valveless piezoelectric pump, it is characterized in that, described pump chamber (5) be arranged on that lower cover (3) is gone up and opening towards loam cake (2).
7. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 1; It is characterized in that; Described pump chamber (5) is made up of second groove (21) sealing that is arranged on first groove (31) on the lower cover (3) and be arranged on the loam cake (2), and described piezoelectric vibrator (4) is fixed in second groove (21).
8. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 1 is characterized in that described pump chamber (5) cross section is rounded.
9. hyperbolic conchoid stream pipe Valveless piezoelectric pump according to claim 1 and 2; It is characterized in that described first hyperbolic conchoid stream pipe (6), second hyperbolic conchoid stream pipe (8), first DC tube (61), second DC tube (7) and first groove (31) all directly carve on lower cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202106534U CN202165254U (en) | 2011-06-21 | 2011-06-21 | Valve-less piezoelectric pump of hyperbolic spiral flow pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202106534U CN202165254U (en) | 2011-06-21 | 2011-06-21 | Valve-less piezoelectric pump of hyperbolic spiral flow pipe |
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| CN202165254U true CN202165254U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202106534U Expired - Fee Related CN202165254U (en) | 2011-06-21 | 2011-06-21 | Valve-less piezoelectric pump of hyperbolic spiral flow pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330663A (en) * | 2011-06-21 | 2012-01-25 | 无锡长辉机电科技有限公司 | Hyperbolic spiral flow pipe valveless piezoelectric pump |
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2011
- 2011-06-21 CN CN2011202106534U patent/CN202165254U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330663A (en) * | 2011-06-21 | 2012-01-25 | 无锡长辉机电科技有限公司 | Hyperbolic spiral flow pipe valveless piezoelectric pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20130621 |