EP1718414A1 - Instrument et dispositif servant a produire un ecoulement de liquides de viscosites differentes - Google Patents

Instrument et dispositif servant a produire un ecoulement de liquides de viscosites differentes

Info

Publication number
EP1718414A1
EP1718414A1 EP05743578A EP05743578A EP1718414A1 EP 1718414 A1 EP1718414 A1 EP 1718414A1 EP 05743578 A EP05743578 A EP 05743578A EP 05743578 A EP05743578 A EP 05743578A EP 1718414 A1 EP1718414 A1 EP 1718414A1
Authority
EP
European Patent Office
Prior art keywords
nozzle
components
drops
works
precipitated
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Withdrawn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
EP05743578A
Other languages
German (de)
English (en)
Inventor
Rainer Pommersheim
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.)
CAVIS MICROCAPS GmbH
Original Assignee
CAVIS MICROCAPS GmbH
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 CAVIS MICROCAPS GmbH filed Critical CAVIS MICROCAPS GmbH
Publication of EP1718414A1 publication Critical patent/EP1718414A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2494—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device a liquid being supplied from a pressurized or compressible container to the discharge device

Definitions

  • the invention relates to a device by means of which drops can be generated from liquids of different viscosities.
  • drops can be generated from liquids of different viscosities.
  • At the heart of this arrangement are air nozzles of various types with no moving parts. Due to its modular structure, the apparatus can be rubbed with each of the nozzles and different individual components as required, which guarantees maximum flexibility.
  • the jet is resolved by centrifugal forces or by resonance vibrations, in the second by the axial action of additional, usually gaseous media.
  • additional, usually gaseous media in the first category, the jet is resolved by centrifugal forces or by resonance vibrations, in the second by the axial action of additional, usually gaseous media.
  • the present invention joins the second group.
  • the invention is based on the object of describing a device which, due to its modular structure, is able for the first time without the above. Disadvantages from liquids of different viscosities to produce drops in a wide range with a narrow distribution.
  • the individual components and the devices for droplet generation are matched to one another in such a way that they can be exchanged within the arrangement.
  • the device or the arrangement is divided into two sections of the nozzle, which can be of different types and the periphery with additional control components which serve to supply media and control the nozzle.
  • FIG. 1 and 2 show different types of nozzles, all of which can be used in the device with appropriate peripherals. They consist for example of stainless steel, another metal or plastics that can be processed accordingly and / or a combination of metals and plastics.
  • Fig. 4a, FIG. 4b, and FIG. 5 show several arrangements of additional components of the device which serve to supply media and to control the nozzles.
  • 3 shows the measuring tube in detail, with the aid of which air flows are measured in the interior of the arrangement.
  • Fig. 1 shows a so-called two-component nozzle.
  • the principle of operation of this nozzle is known from the literature. According to the invention, however, it was modified so that an extremely precise adjustment of the central capillary is possible. In this way, an extremely narrow size distribution of the drops is achieved.
  • the nozzle works as follows: The material to be dripped is pressed through a centrally arranged capillary, which creates a liquid jet at the lower end of the nozzle. Before this, the adjusting screw D ⁇ e capillary outlet opening in relation to the nozzle body (part A) and fixed with the locking ring C. The capillary is centered using the 3 centering screws.
  • the periphery belonging to this nozzle is matched to the nozzle and is shown in FIG. 4a.
  • a regulating and control device which contains a pressure regulating valve DR, a manometer and a shut-off valve BV, we pressurize a storage container.
  • This container contains the liquid material to be dripped. Due to the pressure, the liquid is pressed through the capillary of the nozzle.
  • the air flow that controls the tear-off at the capillary is set with the control valve RV and measured with the measuring tube from FIG. 3.
  • a cross-sectional constriction creates a pressure difference that depends on the air flow that flows through the tube. This pressure difference is recorded by a differential pressure measuring device, which is connected to the two measuring sockets of the pipe.
  • the liquid flow coming from the storage container can also be pulsed, as shown in FIG. 4b.
  • This is achieved by means of a valve interposed in the supply line (normal state open) that is controlled by a frequency generator. In this way a clean droplet tear-off is achieved with media with an unfavorable surface tension.
  • the nozzle shown in FIG. 2 is used in the arrangement, it is possible to generate drops that have a second inside, but not with the drops contain miscible liquid.
  • This principle of operation is also described several times in the literature. Due to the modifications according to the invention and the overall structure which is derived from the nozzle from FIG. 1, the nozzle gains reliability and flexibility.
  • the nozzle body A from FIG. 1 was changed so that it forms a tube in its front part, inside which the capillary is located.
  • a further part G was placed into which the air is blown in via F, which controls the tear-off as in FIG. 1. If the first liquid is pressed through the capillary and the second liquid is formed through the hose connection to part A, drops with the second liquid inside the outlet openings of the two concentric tubes.
  • the device on which this invention is based must be expanded by a second pressure vessel and a second control and stereoscopic device compared to the arrangement described in FIG. 4a.
  • This new structure is shown in FIG. 5.
  • the functioning of the individual parts corresponds to that of Fig. 4a.

Landscapes

  • Nozzles (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un dispositif permettant de produire des gouttes de liquides possédant des viscosités différentes. Ce dispositif est basé sur des ajutages d'air de conception différente exempts de pièces mobiles. La modularité de ce dispositif lui permet d'être activé au moyen de chacun de ces ajutages et de composants individuels différents, ce qui optimise au maximum sa flexibilité.
EP05743578A 2004-02-24 2005-02-23 Instrument et dispositif servant a produire un ecoulement de liquides de viscosites differentes Withdrawn EP1718414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004009385A DE102004009385A1 (de) 2004-02-24 2004-02-24 Gerät und Anordnung zum Vertropfen von Flüssigkeiten unterschiedlicher Viskosität
PCT/EP2005/001891 WO2005079998A1 (fr) 2004-02-24 2005-02-23 Instrument et dispositif servant a produire un ecoulement de liquides de viscosites differentes

Publications (1)

Publication Number Publication Date
EP1718414A1 true EP1718414A1 (fr) 2006-11-08

Family

ID=34833051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05743578A Withdrawn EP1718414A1 (fr) 2004-02-24 2005-02-23 Instrument et dispositif servant a produire un ecoulement de liquides de viscosites differentes

Country Status (6)

Country Link
US (1) US20080029622A1 (fr)
EP (1) EP1718414A1 (fr)
JP (1) JP2007534469A (fr)
CA (1) CA2556988A1 (fr)
DE (1) DE102004009385A1 (fr)
WO (1) WO2005079998A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2751165C (fr) * 2009-02-05 2017-08-22 National Research Council Of Canada Capteur pour mesurer la concentration d'un solvant ou d'un solute dans un systeme mixte en solution
CN106391363B (zh) * 2015-07-29 2019-04-05 清华大学 一种多喷头、多通道微滴喷射设备和工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558051A (en) * 1967-11-02 1971-01-26 Inland Steel Co Multi-material spray gun, spray coating system and method of quickly changing the material being sprayed
US4987854A (en) * 1988-12-12 1991-01-29 Nordson Corporation Apparatus for gas-aided dispensing of liquid materials
US5114752A (en) * 1988-12-12 1992-05-19 Nordson Corporation Method for gas-aided dispensing of liquid materials
DE4223006C2 (de) * 1992-07-13 2000-01-20 Edmar Link Vorrichtung zum Behandeln von Werkstücken mit einem Druckfluid
US6792940B2 (en) * 1996-05-13 2004-09-21 Universidad De Sevilla Device and method for creating aerosols for drug delivery
USRE38281E1 (en) * 1996-07-26 2003-10-21 Biodot, Inc. Dispensing apparatus having improved dynamic range
US5884846A (en) * 1996-09-19 1999-03-23 Tan; Hsiaoming Sherman Pneumatic concentric nebulizer with adjustable and capillaries
US7470547B2 (en) * 2003-07-31 2008-12-30 Biodot, Inc. Methods and systems for dispensing sub-microfluidic drops
JP3925000B2 (ja) * 1999-09-06 2007-06-06 株式会社日立製作所 噴霧器及びそれを用いた分析装置
CN1830536A (zh) * 2000-05-16 2006-09-13 明尼苏达大学评议会 采用多喷嘴喷射产生大批生产量的颗粒
DE10136448A1 (de) * 2001-07-26 2003-02-20 Bayer Ag Vorrichtung und Verfahren zum automatisierten Auftragen von Lackproben

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005079998A1 *

Also Published As

Publication number Publication date
US20080029622A1 (en) 2008-02-07
JP2007534469A (ja) 2007-11-29
CA2556988A1 (fr) 2005-09-01
DE102004009385A1 (de) 2005-09-08
WO2005079998A1 (fr) 2005-09-01

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