DE29917547U1 - Single-flow flow device with piezo element or membrane - Google Patents
Single-flow flow device with piezo element or membraneInfo
- Publication number
- DE29917547U1 DE29917547U1 DE29917547U DE29917547U DE29917547U1 DE 29917547 U1 DE29917547 U1 DE 29917547U1 DE 29917547 U DE29917547 U DE 29917547U DE 29917547 U DE29917547 U DE 29917547U DE 29917547 U1 DE29917547 U1 DE 29917547U1
- Authority
- DE
- Germany
- Prior art keywords
- flow
- pressure
- membrane
- elements
- piezo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012528 membrane Substances 0.000 title claims description 5
- 239000012530 fluid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1077—Flow resistance valves, e.g. without moving parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/04—Pumps having electric drive
- F04B43/043—Micropumps
- F04B43/046—Micropumps with piezoelectric drive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
Einflutige Strömungsvorrichtung mit
Piezoelement oder MembraneSingle-flow flow device with
Piezo element or membrane
Die Erfindung betrifft Vorrichtungen zur Verhinderung einer Rückströmung ohne bewegte Bauteile. Bekannt ist die Anordnung vom Strömungsdioden auf der Saug- und Druckseite von Kolbenkompressoren. Da Strömungsdioden bei höheren Frequenzen wirtschaftlicher arbeiten, wird eine Strömungsvorrichtung vorgeschlagen, bei welcher ein oder mehrere Piezoelemente bzw. eine oder mehrere irgendwie mit ausreichender Frequenz angetriebene bzw. schwingende Membranen / Schläuche zwischen zwei oder mehreren einreihigen Strömungsdioden angeordnet ist.The invention relates to devices for preventing backflow without moving components. The arrangement of flow diodes on the suction and pressure side of piston compressors is known. Since flow diodes work more economically at higher frequencies, a flow device is proposed in which one or more piezo elements or one or more membranes/hoses that are somehow driven or vibrate at a sufficient frequency are arranged between two or more single-row flow diodes.
In Fig. 1 ist eine erfindungsgemäße Vorrichtung dargestellt. Das Medium wird an der Saugseite (1) angesaugt, sobald im Arbeitsraum (4) infolge Rückgang der Membrane eines Piezoschwingers (5) ein Unterdruck entsteht. Die Strömungsdiode (2) weist eine Inselstruktur (3) mit gebogenen und sich teilenden Strömungskanälen auf, welche in Richtung von (1) nach (5) das Medium wirbelarm und mit geringen Strömungsverlusten weiterleiten. Wenn der Piezoschwinger hingegen eine Druckwelle erzeugt, sperrt die Strömungsdiode (2). Das Medium wird daher in die Strömungsdiode (6) gedrückt, welche in Richtung vorn Arbeitsraum (4) zum Ausgangsstutzen (7) die Strömung durchläßt.Fig. 1 shows a device according to the invention. The medium is sucked in at the suction side (1) as soon as a negative pressure is created in the working chamber (4) as a result of the membrane of a piezoelectric oscillator (5) retracting. The flow diode (2) has an island structure (3) with curved and dividing flow channels, which pass the medium in the direction from (1) to (5) with little turbulence and with little flow loss. If, however, the piezoelectric oscillator generates a pressure wave, the flow diode (2) blocks. The medium is therefore pressed into the flow diode (6), which allows the flow to pass in the direction of the working chamber (4) to the outlet connection (7).
Fig. 2 zeigt eine vergleichbare Vorrichtung, jedoch mit einem Membranantrieb. Das periodisch zugeführte hydraulische Medium im Raum (5a) bewirkt über die dadurch bewegte Membrane (5b) Druckschwankungen im Arbeitsraum (4), derart Medium (Fluid) vom Saugstutzen (1) zum Druckstutzen (7) gefördert wird.Fig. 2 shows a comparable device, but with a diaphragm drive. The periodically supplied hydraulic medium in the chamber (5a) causes pressure fluctuations in the working chamber (4) via the diaphragm (5b) that is moved thereby, so that medium (fluid) is conveyed from the suction port (1) to the pressure port (7).
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29917547U DE29917547U1 (en) | 1999-10-05 | 1999-10-05 | Single-flow flow device with piezo element or membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29917547U DE29917547U1 (en) | 1999-10-05 | 1999-10-05 | Single-flow flow device with piezo element or membrane |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29917547U1 true DE29917547U1 (en) | 2000-01-05 |
Family
ID=8079881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29917547U Expired - Lifetime DE29917547U1 (en) | 1999-10-05 | 1999-10-05 | Single-flow flow device with piezo element or membrane |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29917547U1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100447467C (en) * | 2005-08-31 | 2008-12-31 | 北京大学 | Microvalve integrated in flow passage |
CN103644105A (en) * | 2013-11-11 | 2014-03-19 | 江苏大学 | Novel Archimedes solenoid valveless piezoelectric pump |
CN107035668A (en) * | 2017-05-16 | 2017-08-11 | 江苏大学 | A kind of stop block formula wall-attached jet Valveless Piezoelectric Micropump |
CN107061240A (en) * | 2017-05-16 | 2017-08-18 | 江苏大学 | A kind of wall-attached jet Valveless Piezoelectric Micropump with groove and stop block |
DE102016123792A1 (en) | 2016-12-08 | 2018-06-14 | Makita Corporation | Carburettor for an internal combustion engine of a working device |
CN108167564A (en) * | 2018-01-24 | 2018-06-15 | 西安建筑科技大学 | A kind of limitation fluid scavenging apparatus |
CN109798239A (en) * | 2019-04-11 | 2019-05-24 | 长春工业大学 | A kind of Valveless piezoelectric pump of intracavitary a variety of bluff bodys |
CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | Semi-flexible integrated valve active piezoelectric pump |
-
1999
- 1999-10-05 DE DE29917547U patent/DE29917547U1/en not_active Expired - Lifetime
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100447467C (en) * | 2005-08-31 | 2008-12-31 | 北京大学 | Microvalve integrated in flow passage |
CN103644105A (en) * | 2013-11-11 | 2014-03-19 | 江苏大学 | Novel Archimedes solenoid valveless piezoelectric pump |
CN103644105B (en) * | 2013-11-11 | 2016-01-20 | 江苏大学 | A kind of Archimedes spiral pipe Valveless piezoelectric pump |
DE102016123792A1 (en) | 2016-12-08 | 2018-06-14 | Makita Corporation | Carburettor for an internal combustion engine of a working device |
CN107035668A (en) * | 2017-05-16 | 2017-08-11 | 江苏大学 | A kind of stop block formula wall-attached jet Valveless Piezoelectric Micropump |
CN107061240A (en) * | 2017-05-16 | 2017-08-18 | 江苏大学 | A kind of wall-attached jet Valveless Piezoelectric Micropump with groove and stop block |
CN107061240B (en) * | 2017-05-16 | 2018-12-14 | 江苏大学 | A kind of wall-attached jet Valveless Piezoelectric Micropump with groove and stop block |
CN107035668B (en) * | 2017-05-16 | 2018-12-14 | 江苏大学 | A kind of stop block formula wall-attached jet Valveless Piezoelectric Micropump |
CN108167564A (en) * | 2018-01-24 | 2018-06-15 | 西安建筑科技大学 | A kind of limitation fluid scavenging apparatus |
CN109798239A (en) * | 2019-04-11 | 2019-05-24 | 长春工业大学 | A kind of Valveless piezoelectric pump of intracavitary a variety of bluff bodys |
CN111980889A (en) * | 2020-09-29 | 2020-11-24 | 长春工业大学 | Semi-flexible integrated valve active piezoelectric pump |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R086 | Non-binding declaration of licensing interest | ||
R207 | Utility model specification |
Effective date: 20000210 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20030501 |