DE29917547U1 - Single-flow flow device with piezo element or membrane - Google Patents

Single-flow flow device with piezo element or membrane

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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
Application number
DE29917547U
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German (de)
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE29917547U priority Critical patent/DE29917547U1/en
Publication of DE29917547U1 publication Critical patent/DE29917547U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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)

Strömungsvorrichtung mit einreihigen Strömungsdioden und einer oder mehreren druck- oder schwingungserzeugenden Bauteilen, dadurch gekennzeichnet, daß bei jeder Strömungsdiode nur ein einziger Strömungskanal/eine Strömungslinie (3) vorliegt, welcher entlang der Haupt-Fließrichtung eine komplexe Struktur aufweist, vorzugsweise mit Inseln oder Umlenkungswegen zwecks 180° Umlenkung ausgestattet ist, derart die Strömung in einer Richtung verlustarm durchgelassen und in der Rückrichtung in Teilströme aufgeteilt und effektiv verwirbelt ist, derart die Vorrichtung wie eine Rückschlagarmatur ohne bewegliche Elemente im Rückschlagbereich wirkt, wobei die druck- oder schwingungserzeugenden Bauteile Piezoschwinger/Piezoelemente oder auf irgendeine andere Weise angetriebene Membranen oder elastische oder reversibel verformbare Elemente (Schläuche, Bälge) sind. Flow device with single-row flow diodes and one or more pressure or vibration generating components, characterized in that each flow diode has only a single flow channel/flow line ( 3 ) which has a complex structure along the main flow direction, preferably is equipped with islands or diversion paths for the purpose of 180° diversion, such that the flow is passed through with little loss in one direction and is divided into partial flows and effectively swirled in the return direction, such that the device acts like a check valve without moving elements in the check area, the pressure or vibration generating components being piezo oscillators/piezo elements or membranes driven in some other way or elastic or reversibly deformable elements (hoses, bellows).
DE29917547U 1999-10-05 1999-10-05 Single-flow flow device with piezo element or membrane Expired - Lifetime DE29917547U1 (en)

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

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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)

* Cited by examiner, † Cited by third party
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

Cited By (11)

* Cited by examiner, † Cited by third party
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