EP0534082A1 - Système de pompage pour refouler des milieux liquides ou gazeux - Google Patents

Système de pompage pour refouler des milieux liquides ou gazeux Download PDF

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Publication number
EP0534082A1
EP0534082A1 EP92112525A EP92112525A EP0534082A1 EP 0534082 A1 EP0534082 A1 EP 0534082A1 EP 92112525 A EP92112525 A EP 92112525A EP 92112525 A EP92112525 A EP 92112525A EP 0534082 A1 EP0534082 A1 EP 0534082A1
Authority
EP
European Patent Office
Prior art keywords
pump system
pressure vessel
recipient
membrane
liquid
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.)
Withdrawn
Application number
EP92112525A
Other languages
German (de)
English (en)
Inventor
Werner Dipl.-Ing. Zimmermann
Willi Dr. Dipl.-Phys. Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Airbus Defence and Space GmbH
Original Assignee
Deutsche Aerospace AG
Daimler Benz Aerospace AG
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 Deutsche Aerospace AG, Daimler Benz Aerospace AG filed Critical Deutsche Aerospace AG
Publication of EP0534082A1 publication Critical patent/EP0534082A1/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to a pump system for conveying liquid or gaseous media according to the preamble of claim 1.
  • the present invention is based on the object of demonstrating a pump system of the type mentioned at the outset, the pump frequencies of which extend into the kHz range and higher, have rapid controllability, are almost free of power loss and are hardly subject to wear.
  • the pump system shown there is based on an electrically conductive coating on both sides Film 10 made of a piezoelectric material - for example PVDF (polyvinylidene difluoride).
  • This piezo film 10 is now folded (FIG. 3) or rolled in two layers (FIG. 2) in a pressure vessel DG filled with liquid 15 with low compressibility, which is closed with a membrane 16 towards the recipient 13.
  • An inlet valve 14a and an outlet valve 14b are assigned to the recipient 13.
  • An electrical control voltage 12 is applied to the piezo film 10 via electrical connections 11, which causes polarization and thus a change in the film thickness.
  • the resulting change in pressure in the pressure vessel DG now moves the membrane 16, which in turn varies the volume of the recipient 13.
  • a periodic change in voltage now produces a pumping effect in connection with the two valves 14a, 14b.
  • this creates a pump system that operates at a very high frequency (kHz range and higher), has a quick controllability due to the low inertia of the drive, and since the piezoelectrics can in principle be controlled without power, only very low power losses occur because of ohmic and inductive There are no losses whatsoever. It is also essential that this pump system is almost wear-free.
  • the transverse contraction must be prevented by the thickness and by the elastic properties of at least one of the electrically conductive coatings (electrodes), for example by an Al foil con bonded to the piezoelectric foil with approx Thickness of the PVDF piezoelectric film.
  • the pressure vessel DG be replaced by a cylinder with a piston (not shown) complete, the diameter of the cylinder must be adapted to the desired piston stroke. This can be easily implemented by any specialist who has become familiar with the present pump system.
  • the thickness dimensioning of the piezo film 10 should be 100 ⁇ m. As already explained above, the film 10 must be folded or rolled in two layers in the pressure vessel DG so that no contact can occur between the two contact surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP92112525A 1991-08-22 1992-07-22 Système de pompage pour refouler des milieux liquides ou gazeux Withdrawn EP0534082A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4127860A DE4127860A1 (de) 1991-08-22 1991-08-22 Pumpensystem zur foerderung von fluessigen oder gasfoermigen medien
DE4127860 1991-08-22

Publications (1)

Publication Number Publication Date
EP0534082A1 true EP0534082A1 (fr) 1993-03-31

Family

ID=6438886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112525A Withdrawn EP0534082A1 (fr) 1991-08-22 1992-07-22 Système de pompage pour refouler des milieux liquides ou gazeux

Country Status (2)

Country Link
EP (1) EP0534082A1 (fr)
DE (1) DE4127860A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1323925A3 (fr) * 2001-12-25 2004-07-07 Matsushita Electric Works, Ltd. Actionneur à polymère électroactif et pompe à diaphragme utilisant un tel actionneur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333871C2 (de) * 1993-10-05 1997-02-20 Daimler Benz Aerospace Ag Elektro-hydraulischer Aktuator
DE102009045396A1 (de) * 2009-10-06 2011-04-07 Fev Motorentechnik Gmbh Prüfstand
CN113994585A (zh) * 2019-06-18 2022-01-28 Ｓｔｒａｗｂ股份有限公司 静电致动器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037380A1 (de) * 1980-10-03 1982-05-13 Carl Schenck Ag, 6100 Darmstadt Hydraulischer druckerzeuger und/oder druckmittelversorgungsanordnung
US4330730A (en) * 1980-03-27 1982-05-18 Eastman Kodak Company Wound piezoelectric polymer flexure devices
DE3415421A1 (de) * 1983-04-25 1984-10-31 Ricoh Co., Ltd., Tokio/Tokyo Pumpe zum verdichten einer fluessigkeit
FR2645349A1 (fr) * 1989-03-29 1990-10-05 Pennwalt Corp Structure piezoelectrique stratifiee et procede pour sa formation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598506A (en) * 1969-04-23 1971-08-10 Physics Int Co Electrostrictive actuator
DE3342844A1 (de) * 1983-11-26 1985-06-05 Philips Patentverwaltung Gmbh, 2000 Hamburg Mikroplanarer tintenstrahldruckkopf

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4330730A (en) * 1980-03-27 1982-05-18 Eastman Kodak Company Wound piezoelectric polymer flexure devices
DE3037380A1 (de) * 1980-10-03 1982-05-13 Carl Schenck Ag, 6100 Darmstadt Hydraulischer druckerzeuger und/oder druckmittelversorgungsanordnung
DE3415421A1 (de) * 1983-04-25 1984-10-31 Ricoh Co., Ltd., Tokio/Tokyo Pumpe zum verdichten einer fluessigkeit
FR2645349A1 (fr) * 1989-03-29 1990-10-05 Pennwalt Corp Structure piezoelectrique stratifiee et procede pour sa formation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RESEARCH DISCLOSURE, Nr. 187, November 1979, ISSN 0374-4353, INDUSTRIAL OPPOR- TUNITIES LTD HOMEWELL, HAVANT HAMPSHIRE, PO9 1EF, UK Nr. 18715 "Multilayered pie- zoelectric flexure device", Seiten 627, 628. *
SOVIET INVENTIONS ILLU- STRATED, Sektionen P,Q, Woche 8848, 18. Jänner 1989, DERWENT PUBLICATONS LTD., London Q56, & SU-A-1 397 622 (AVERIN) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1323925A3 (fr) * 2001-12-25 2004-07-07 Matsushita Electric Works, Ltd. Actionneur à polymère électroactif et pompe à diaphragme utilisant un tel actionneur
US6960864B2 (en) 2001-12-25 2005-11-01 Matsushita Electric Works, Ltd. Electroactive polymer actuator and diaphragm pump using the same
EP1683968A3 (fr) * 2001-12-25 2006-08-16 Matsushita Electric Works, Ltd. Actionneur à polymère électroactif et pompe à diaphragme utilisant un tel actionneur

Also Published As

Publication number Publication date
DE4127860A1 (de) 1993-02-25

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