CN1558114A - Reciprocating valveless pump with consecutively changeable cone angle - Google Patents
Reciprocating valveless pump with consecutively changeable cone angle Download PDFInfo
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- CN1558114A CN1558114A CNA2004100006697A CN200410000669A CN1558114A CN 1558114 A CN1558114 A CN 1558114A CN A2004100006697 A CNA2004100006697 A CN A2004100006697A CN 200410000669 A CN200410000669 A CN 200410000669A CN 1558114 A CN1558114 A CN 1558114A
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Abstract
The reciprocating variable cone angle no-valve pump as one kind of fluid machine includes pump body, conic body connected to the pump for fluid to pass through, and electromechanical vibrator fixed on the pump body. The present invention features that the conic body consists of fluid retainer comprising linear fluid retainer and variable cone angle fluid retainer hinged with shaft, upper and lower clamping plates to hold the linear fluid retainer and the variable cone angle fluid retainer, and mechanical fasteners. The vibrator may be an available mechanical one for piezoelectric pump. By means of altering two variable cone angle fluid path retainers, the present invention can obtain fluid path of different cone angle; and by means of electromechanical vibrator to apply external force, the present invention can realize the continuous change in cone angle, so that the present invention can reach the aim of altering the flow rate and flow direction easily.
Description
Technical field:
A kind ofly reciprocating typely can become the cone angle valveless pump continuously, relate to the improvement that can become cone angle mechanism and reciprocating type conical flow pipe valveless pump continuously in the convection cell machinery subject, belong to field of fluid machinery.
Background technique:
For the volume type reciprocating pump, if valve is defined as: in the suction and the process that spues of pump, have a time point at least, make between the suction and discharge opening that originally in pump chamber, is communicated with, produce disconnected reason; That is to say that what valve caused is not communicated with, make pump produce one-way flow.So so-called valveless is exactly some character of utilizing fluid, creates promptly and can produce one-way flow, can produce the special entity that is communicated with all the time again between suction and discharge opening.
1993, the Ai Sitemen of Sweden such as (E.Stemme) creatively invented conical flow pipe Valveless piezoelectric pump.Yin Aisitemen people's such as (E.Stemme) Valveless piezoelectric pump is to have utilized inverted each other conical stream to manage mechanism, so be referred to as conical stream pipe Valveless piezoelectric pump.Figure 1 shows that the Valveless piezoelectric pump of Sweden Ai Sitemen (E.Stemme), Fig. 1 (a) is inverted each other conical stream pipe, and Fig. 1 (b) is the structure of Valveless piezoelectric pump.
Nineteen ninety-five, the Te Gelaqi people such as (T.Gerlach) of Germany has developed little side's conical flow pipe Valveless piezoelectric pump on the silicon plate.Figure 2 shows that the Valveless piezoelectric pump of German Te Gelaqi (T.Gerlach), the square taper of Fig. 2 (a) on the silicon plate, processing, Fig. 2 (b) is the structure of Valveless piezoelectric pump.
Figure 3 shows that the Valveless piezoelectric pump that combines behind Fig. 1, Fig. 2.1 is set screw in Fig. 3, and 2 are the vibration macrophotograph, and 3 is the pump housing, and 4 is taper A, and 5 is taper B, and 6 is piezo-electric sheet.Vibration macrophotograph 2 is bonding after being clipped in the middle by two piezo-electric sheets 6, new structure after bonding is called as ticker, by ticker, the pump housing 3, taper A4, the structure that taper B5 and set screw 1 are formed has only taper A4, two of taper B5 with extraneous together with opening, if the two ends at the piezo-electric sheet 2 of ticker apply alternating voltage, ticker will produce alternately elongation and contraction deformation, ticker like this, the pump housing 3, taper A4, the space that taper B5 is formed has just formed volume-variation, and said structure also just reach into can the mobile taper Valveless piezoelectric pump of individual event.
The ticker screw 1 that is fixed is fixed on the pump housing 3, and taper A4, taper B5 are inverted-cone shape body mechanisms each other, taper A4, and taper B5 can be that interference fit connects with being connected of the pump housing 3, also can be bonding, can also be welding.
Taper A4 and taper B5 can be identical also can be incomplete same, its whether identical size that is meant physical dimension.The member and main geometric of taper A4, taper B5 is provided by Fig. 4 taper Valveless piezoelectric pump, and the θ angle is a cone angle.Taper A4 is an expanding duct, and taper B5 is a collapsible tube.
Studying carefully the deep layer principle of its conical flow pipe valveless pump, is to have utilized inverted each other taper mechanism, and the flow resistance when the forward and reverse stream pipe that is produced flows is poor.That is to say that the size of taper angle theta can directly influence fluid macroscopic property--flow resistance, the more underlying causes that produces flow resistance is the thickness of viscous sublayer, and moving viscous sublayer thickness increases, and flow resistance also can increase on the macroscopic view, and the flow resistance of stream increases, and flow will reduce.The fluid that in taper mechanism, flows, flow resistance does not wait on its forward and reverse mobile macroscopic view, so forward and reverse flowing is to exist flow resistance poor, the flow resistance when the valveless pump individual event is flowed and also just stemmed from forward and reverse stream pipe and flow is poor.
Fig. 5 has provided the empirical value that concerns of one group of taper taper angle theta and flow resistance ξ, the flow resistance of expanding duct is decided to be ξ
d, the flow resistance of collapsible tube is decided to be ξ
n, as shown in Figure 5, no matter be expanding duct or collapsible tube, its flow resistance ξ increases with the increase of taper angle theta,, the flow resistance ξ of expanding duct
dFlow resistance ξ than collapsible tube
nWhat increase is fast, that is: the flow resistance curve of the flow resistance curve of expanding duct and collapsible tube has intersection point.According to conical flow pipe Valveless piezoelectric pump flow equation as can be known, the flow direction of pump depends on that the flow resistance of expanding duct, collapsible tube is poor.Formula (1) is a conical flow pipe Valveless piezoelectric pump flow equation.
Q and f are respectively the frequency of the flow and the piezoelectric vibrator of this pump.ξ
dAnd ξ
nBe respectively the flow resistance of expanding duct and collapsible tube.Δ V is provided by formula (2).In formula (2), w (r, 0) and
Be respectively the displacement amount of piezoelectric vibrator, R is the oscillator radius
[4]
If ξ
dGreater than ξ
n, can get by formula (1), pump duty Q is greater than 0 (just).If ξ
dLess than ξ
n, then pump duty Q is less than 0 (bearing).Flow Q just with the negative liquid flow path direction that has shown pump.In other words, ξ
dAnd ξ
nDetermined the liquid flow path direction of this pump.
Taper angle theta and flow resistance ξ have corresponding relation, and just taper angle theta has determined the liquid flow path direction of pump.Prior art up to now can only be to make the fixedly taper of taper angle theta, can't realize and can change taper angle theta continuously, reaches the flow that changes pump, the purpose of liquid flow path direction.
Summary of the invention
The objective of the invention is to overcome above deficiency, proposed to become cone angle mechanism continuously, and design and a kind ofly reciprocating typely can become the cone angle valveless pump continuously.
Technological scheme of the present invention is in order to realize changing continuously taper angle theta, changed the structure of Fig. 4 taper, technological scheme of the present invention such as Fig. 6, Fig. 7, Fig. 8, Fig. 9, shown in Figure 10 can become the cone angle valveless pump continuously for becoming cone angle mechanism continuously and having the reciprocating type of this mechanism.The present invention includes the pump housing 3, be connected with the pump housing 3 and make fluid pass through the taper that it flows, the screw 1 that is fixed be fixed on the pump housing 3 and place taper top, can make and cause volume-variation to form the electromechanical ticker that fluid flows in the pump housing, the invention is characterized in that taper is to adopt axle 11 that straight line stream shelves body 9 and stream shelves body 10 hinges that can change cone angle continuously are connected to become the stream shelves body that fluid can pass through; Adopt punch holder 8 and the die holder 12 will be by straight line stream shelves body 9 and can change stream shelves body that the stream shelves body 10 of cone angle constitutes continuously and place between two clamping plate and constitute again by machanical fastener is fastening.
Describedly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, in the taper the straight line stream shelves body 9 of stream shelves body or can change continuously cone angle stream shelves body 10 not by edge, hinged two end part and last, die holder 8 and 12 justified margin, and be bonded in the center line both sides of clamping plate, at last, nut 13 passes punch holder 8 and is fastened on the nut 7 with die holder 12, punch holder 8 like this, die holder 12, straight line stream shelves body 9, the stream shelves body 10 that can change cone angle has continuously just constituted the stream that is cone angle on the plane, two straight line stream shelves bodies 9 and two cephalic pars that change the stream shelves body 10 of cone angle only continuously are respectively the gateways of stream, flow direction according to fluid, two straight line stream shelves bodies 9 and two heads that change the stream shelves body 10 of cone angle only continuously both can become outlet, also can become inlet.
Particularly: as shown in Figure 6, if fluid is mobile from top to bottom, the two stream shelves bodies 10 that change cone angle only continuously are exactly inlet, and two straight line stream shelves bodies 9 are exactly outlet; If fluid is mobile from bottom to top, the two stream shelves bodies 10 that change cone angle only continuously are exactly outlet, and two straight line stream shelves bodies 9 are exactly inlet.
Among the present invention the two stream shelves bodies 10 that change cone angle only continuously last and straight line stream shelves body 9 under the cone angle mechanism that can become continuously be defined as 14, the two stream shelves bodies 10 that change cone angle only continuously down and straight line stream shelves body 9 is defined as 15 in the last cone angle mechanism that can become continuously.14 and 15 can be two invertedly each other can become cone angle mechanism continuously.
Described a kind of reciprocating type stream shelves body that can change cone angle continuously 10 that can become continuously in the cone angle valveless pump adopts the double-sided belt groove structure, filling rubber strip in the groove; Axle 11, straight line stream shelves body 9, can change filling soft silica gel between the slit of stream shelves body 10 of cone angle continuously; The two stream shelves bodies 10 that change cone angle only continuously can be between punch holder 8, die holder 12 serves as that axle rotates with axle 11, is pure slip between the two stream shelves bodies 10 that change cone angle only continuously and punch holder 8, the die holder 12.So the groove internal cause filling between surface of contact rubber strip can think sealing contact.
Described a kind of reciprocating type electromechanical vibration that can become continuously in the cone angle valveless pump can adopt by being bonded in the piezoelectricity type ticker that two piezo-electric sheets, 6 middle vibration macrophotographs 2 constitute; The mechanical type ticker that also can adopt the employed piston of conventional reciprocating formula piezoelectric pump to constitute.
Change the stream shelves body 10 of cone angle only continuously by the visible change two of aforesaid technological scheme of the present invention, just can obtain the stream of different cone angle, the two stream shelves bodies 10 that change cone angle only continuously can accurately rotate continuously, so this stream is to realize changing continuously the taper angle theta function.
According to the experiment relation of taper taper angle theta shown in Figure 5 and flow resistance ξ, can know the change taper angle theta, just can change the flow and the liquid flow path direction of pump.Fig. 8 is that the cone angle that can become cone angle mechanism continuously increases and reduce schematic representation.The external force that relies on electromechanical vibration to give just can simply realize changing taper angle theta.
The method that applies external force has various ways, all belong to conventional method, exemplify an example at this: the application of force arrow place in Fig. 7 respectively connects a hinge, the other end of hinge respectively connects a ball-screw, ball-screw can be changed into straight line motion to rotational motion, the straight line motion end of ball-screw connects hinge, the rotation end of ball-screw connects motor, connecting in this all is that bolt connects, and the cone angle that can become cone angle mechanism continuously increases and reduces and can transfer realization by motor positive and negative.
The reciprocating type working principle that can become the cone angle Valveless piezoelectric pump continuously:
By vibration macrophotograph 2, piezo-electric sheet 6 has been formed piezoelectric vibrator in Fig. 9, piezoelectric vibrator, and the pump housing 3, and two inverted each other cone angle mechanisms 14 and 15 that can become have continuously formed the cavity with two opening relative closures.Piezoelectric vibrator is applied alternating voltage, piezoelectric vibrator will produce along the Vertical direction of self planar configuration face and back and forth be out of shape, so just the cavity inner fluid is applied with reciprocating force, in suction process, there is fluid to be inhaled into cavity simultaneously by two inverted each other cone angle mechanisms 14 and 15 that can become continuously, just two inverted each other cone angle mechanisms 14 and 15 that can become continuously are because figure five tests the principle that is disclosed, and a fluid ratio another that is inhaled into is many; In the process of spuing, fluid is arranged simultaneously by the cavity that spues by two inverted each other cone angle mechanisms 14 and 15 that can become continuously, just two inverted each other cone angle mechanisms 14 and 15 that can become continuously are because the principle that figure five experiments are disclosed sucks a many ratio of fluid sucks less fluid in suction process the less fluid that spues in suction process; It is poor so just to have formed at the fluid volume that sucks with the process that spues, so volume differences has just formed the one-way flow of pump; Change the taper angle theta (for example: change to wide-angle from small angle) of the stream shelves body 10 that can change cone angle continuously among Fig. 6, the flow of pump will change, and the flow direction that further strengthens the taper angle theta pump also will change.
The reciprocating type working principle that can become the cone angle valveless pump continuously:
By piston ring 16, piston 17 pump housings 3 reach two inverted each other cone angle mechanisms 14 and 15 that can become continuously and have formed the cavity with two opening relative closures in Figure 10.Piston 17 pumps, so just the cavity inner fluid is applied with reciprocating force, in suction process, there is fluid to be inhaled into cavity simultaneously by two inverted each other cone angle mechanisms 14 and 15 that can become continuously, just two inverted each other cone angle mechanisms 14 and 15 that can become continuously are because figure five tests the principle that is disclosed, and a fluid ratio another that is inhaled into is many; In the process of spuing, fluid is arranged simultaneously by the cavity that spues by two inverted each other cone angle mechanisms 14 and 15 that can become continuously, just two inverted each other cone angle mechanisms 14 and 15 that can become continuously are because the principle that figure five experiments are disclosed sucks a many ratio of fluid sucks less fluid in suction process the less fluid that spues in suction process; It is poor so just to have formed at the fluid volume that sucks with the process that spues, so volume differences has just formed the one-way flow of pump; Change the taper angle theta (for example: change to wide-angle from small angle) of the stream shelves body 10 that can change cone angle continuously among Fig. 6, the flow of pump will change, and the flow direction that further strengthens the taper angle theta pump also will change.
Description of drawings:
The Valveless piezoelectric pump of Fig. 1 Sweden Ai Sitemen (E.Stemme);
The Valveless piezoelectric pump of Fig. 2 Germany Te Gelaqi (T.Gerlach);
Fig. 3 taper Valveless piezoelectric pump;
Structure and the member and main geometric of Fig. 4 taper A4, taper B5;
The relation of Fig. 5 taper taper angle theta and flow resistance ξ;
Fig. 6 is of the present invention can to become cone angle mechanism continuously;
(a) can become the plan view of cone angle mechanism continuously;
(b) can become the side view of cone angle mechanism continuously;
Fig. 7 filling of the present invention the sealed groove schematic representation of rubber strip
(a) filling the sealed groove of rubber strip,
(b) the rubber strip schematic representation of groove of packing into, 10-1: rubber strip;
Fig. 8 cone angle that can become cone angle mechanism continuously of the present invention increases and reduces schematic representation;
Fig. 9 piezoelectricity of the present invention is reciprocating type can to become the cone angle valveless pump continuously;
Figure 10 piston reciprocating type valveless pump 16 that can become cone angle mechanism continuously of the present invention is piston ring, and 17 is piston.
Embodiment:
Referring to accompanying drawing 6-10, adopt general parts, promptly bolt 13 is M3 * 15, and nut 7 is the standard piece of M3, and punch holder 8, straight line stream shelves body 9, the stream shelves body 10 that can change cone angle continuously, axle 11 and die holder 12 are methacrylate sheet machining and form.Other auxiliary material soft silica gels, rubber strip and binder are the commercially available material.
Describedly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, in the taper the straight line stream shelves body 9 of stream shelves body or can change continuously cone angle stream shelves body 10 not by the justified margin of edge, hinged two end part and upper and lower clamping plate 8 and 12, and be bonded in the center line both sides of clamping plate, at interval between 2-10mm, at last, nut 13 passes punch holder 8 and is fastened on the nut 7 with die holder 12.Figure 9 shows that the reciprocating type valveless pump of piezoelectricity that can become cone angle mechanism continuously has been installed.
The piezoelectricity of Fig. 9 is reciprocating type can to become the cone angle valveless pump continuously, adopts set screw 1 that ticker is fixed on the pump housing 3, and used unit is the employed parts of conventional reciprocating formula piezoelectric pump.The piston reciprocating type valveless pump that can become cone angle mechanism continuously shown in Figure 10, used unit also is the piezoelectric pump universal component.
Claims (5)
1, a kind ofly reciprocating typely can become the cone angle valveless pump continuously, include the pump housing (3), be connected with the pump housing (3) and make fluid pass through the taper that it flows, the screw (1) that is fixed be fixed on the pump housing (3) go up and place the taper top, can make and cause volume-variation to form the electromechanical ticker that fluid flows in the pump housing, the invention is characterized in that taper is to adopt axle (11) that straight line stream shelves bodies (9) and stream shelves body (10) hinge that can change cone angle continuously are connected to become the stream shelves body that fluid can pass through; Adopting punch holder (8) and die holder (12) will and can change the stream shelves body that the stream shelves body (10) of cone angle constitutes by straight line stream shelves bodies (9) continuously again places between two clamping plate by the fastening formation of machanical fastener.
2, according to claim 1ly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, it is characterized in that in the taper the straight line stream shelves bodies (9) of stream shelves body or can change continuously cone angle stream shelves body (10) not by edge, hinged two end part and last, the justified margin of die holder (8) and (12), and be bonded in the center line both sides of clamping plate, at last, nut (13) passes punch holder (8) and is fastened on the nut (7) with die holder (12), punch holder (8) like this, die holder (12), straight line stream shelves bodies (9), the stream shelves body (10) that can change cone angle has continuously just constituted the stream that is cone angle on the plane, the cephalic par that two straight line stream shelves bodies (9) and two change the stream shelves body (10) of cone angle only continuously is respectively the gateway of stream, flow direction according to fluid, the head that two straight line stream shelves bodies (9) and two change the stream shelves body (10) of cone angle only continuously both can become outlet, also can become inlet.
3, according to claim 1 and 2ly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, it is characterized in that adopting the stream shelves body (10) that can change cone angle continuously of double-sided belt groove structure, filling rubber strip in the groove; Axle (11), straight line stream shelves bodies (9), can change filling soft silica gel between the slit of stream shelves body (10) of cone angle continuously; The two stream shelves bodies (10) that change cone angle only continuously can be between punch holder (8), die holder (12) serves as that axle rotates with axle (11), is pure slip between the two stream shelves bodies (10) that change cone angle only continuously and punch holder (8), the die holder (12).
4, according to claim 1 and 2ly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, it is characterized in that in the pump that two tapers can be arranged to inverted each other taper mechanism.
5, according to claim 1 and 2ly a kind ofly reciprocating typely can become the cone angle valveless pump continuously, it is characterized in that described electromechanical vibration, can adopt the piezoelectricity type ticker that constitutes by the vibration macrophotograph (2) that is bonded in the middle of two piezo-electric sheets (6); The mechanical type ticker that also can adopt the employed piston of conventional reciprocating formula pump to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100006697A CN1306165C (en) | 2004-01-16 | 2004-01-16 | Reciprocating valveless pump with consecutively changeable cone angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100006697A CN1306165C (en) | 2004-01-16 | 2004-01-16 | Reciprocating valveless pump with consecutively changeable cone angle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1558114A true CN1558114A (en) | 2004-12-29 |
| CN1306165C CN1306165C (en) | 2007-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100006697A Expired - Fee Related CN1306165C (en) | 2004-01-16 | 2004-01-16 | Reciprocating valveless pump with consecutively changeable cone angle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007043976A1 (en) * | 2005-10-13 | 2007-04-19 | Nanyang Technological University | Electro-active valveless pump |
| CN100338361C (en) * | 2005-08-12 | 2007-09-19 | 北京工业大学 | Valveless piezoelectric pump |
| CN100390413C (en) * | 2006-11-10 | 2008-05-28 | 南京航空航天大学 | Standing wave driven piezoelectric ceramic pump capable of realizing positive and negative directional flow of liquid |
| CN100408852C (en) * | 2005-01-14 | 2008-08-06 | 黑龙江大学 | Micro-electro-mechanical V-type micro valve and making method thereof |
| CN108223339A (en) * | 2016-12-14 | 2018-06-29 | 德尔格制造股份两合公司 | Cavity pump and the method for running cavity pump |
| CN111828290A (en) * | 2020-07-20 | 2020-10-27 | 广州大学 | Valveless piezoelectric pump |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE508435C2 (en) * | 1993-02-23 | 1998-10-05 | Erik Stemme | Diaphragm pump type pump |
| JP2001221166A (en) * | 2000-02-10 | 2001-08-17 | Furuyama Akimi | Displacement type pump with spiral pipes and fluid transfer method |
| CN2429701Y (en) * | 2000-06-14 | 2001-05-09 | 临安特种阀门厂 | Stop valve with declined surface and two gates |
-
2004
- 2004-01-16 CN CNB2004100006697A patent/CN1306165C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100408852C (en) * | 2005-01-14 | 2008-08-06 | 黑龙江大学 | Micro-electro-mechanical V-type micro valve and making method thereof |
| CN100338361C (en) * | 2005-08-12 | 2007-09-19 | 北京工业大学 | Valveless piezoelectric pump |
| WO2007043976A1 (en) * | 2005-10-13 | 2007-04-19 | Nanyang Technological University | Electro-active valveless pump |
| US8668474B2 (en) | 2005-10-13 | 2014-03-11 | Nanyang Technological University | Electro-active valveless pump |
| CN100390413C (en) * | 2006-11-10 | 2008-05-28 | 南京航空航天大学 | Standing wave driven piezoelectric ceramic pump capable of realizing positive and negative directional flow of liquid |
| CN108223339A (en) * | 2016-12-14 | 2018-06-29 | 德尔格制造股份两合公司 | Cavity pump and the method for running cavity pump |
| CN111828290A (en) * | 2020-07-20 | 2020-10-27 | 广州大学 | Valveless piezoelectric pump |
| CN111828290B (en) * | 2020-07-20 | 2022-04-19 | 广州大学 | Valveless piezoelectric pump |
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| CN1306165C (en) | 2007-03-21 |
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