EP0430359A1 - Kapillar-Vernebelungsvorrichtung - Google Patents

Kapillar-Vernebelungsvorrichtung Download PDF

Info

Publication number
EP0430359A1
EP0430359A1 EP90203093A EP90203093A EP0430359A1 EP 0430359 A1 EP0430359 A1 EP 0430359A1 EP 90203093 A EP90203093 A EP 90203093A EP 90203093 A EP90203093 A EP 90203093A EP 0430359 A1 EP0430359 A1 EP 0430359A1
Authority
EP
European Patent Office
Prior art keywords
capillary
nebulizer
supply system
gas supply
holder
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Withdrawn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
EP90203093A
Other languages
English (en)
French (fr)
Inventor
Laurentius Franciscus Jean Marie Monten
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0430359A1 publication Critical patent/EP0430359A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/265—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being symmetrically deflected about the axis of the nozzle
    • 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
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets

Definitions

  • the invention relates to a nebulizer comprising a capillary supply system for material to be analysed and a capillary carrier gas supply system for forming an aerosol in an interaction space around flow outlets of both supplies.
  • nebulizers are known from an article of B.L. Sharp, published in "Journal of Analytical Atomic Spectrometry", August 1988, Vol. 3, pp. 613-652, especially the survey “Nebulizers", p. 614. Nebulizers for analytical purposes are classified therein in Concentric-flow, Cross-flow and Babington nebulizers. It has been found in practice that all three types of nebulizers have disadvantages which result in an aerosol having too low a particle density and excessively large particles. Furthermore, the nebulizers are not adjustable or can be adjusted only with difficulty and supply ducts thereof are liable to be clogged.
  • nebulizers In such nebulizers, a change-over without problems between, for example, material solutions in water and solutions in, for example, an organic liquid having a deviating viscosity and the like is desired.
  • the material to be examined is supplied in the form of a liquid via a central capillary and the carrier gas is supplied through an opening surrounding it concentrically.
  • the central capillary and the carrier gas duct are accommodated in a common supply holder.
  • the capillary for material supply may be mounted so as to be displaceable in the holder in axial direction.
  • the outlet opening and the gas supply opening are also displaceable in axial direction with respect to each other, which may slightly influence the formation of aerosol.
  • outlet openings for the flow of material and the flow of carrier gas are directed transversely to each other.
  • the distance of each of the openings from the prolonged axis of the other opening as a rule is fixedly adjusted and cannot be varied. When this distance is made readjustable, the formation of aerosol can certainly be strongly influenced, but this would result in that such a nebulizer becomes unstable.
  • the material is supplied in the form of a film flow over a wall surface and the flow of carrier gas is supplied through an opening in the wall. If as the wall a part of a comparatively large sphere or gutter is chosen and the flow of material is arranged at a comparatively great distance from the gas supply opening, a nebulizer can be obtained which operates in a stable manner. However, this construction does not permit any adjustment possibilities for this type of nebulizer.
  • the invention has for its object to obviate the said disadvantages and for this purpose the nebulizer of the kind mentioned in the opening paragraph is characterized according to the invention in that an end of the capillary material supply system located in the interaction space has a flat guide surface for deflecting the flow of carrier gas and one or more openings for supplying the flow of material to the guide surface.
  • the capillary material supply system comprises a single capillary or a system of several single capillaries, for example two to four capillaries orientated symmetrically around a longitudinal axis, or an annular capillary likewise arranged symmetrically around the longitudinal axis. Due to the annular liquid capillary, the effectiveness of the nebulizer increases without the adjustment possibilities being limited. The increase of effectiveness is obtained in that now a single uninterrupted umbrella-shaped plume of mist is obtained.
  • the capillary material supply system is accommodated in a rod-shaped holder, which merges into a preferably truncated cone surface, the capillaries merging into a surface of the cone.
  • the conical angle By the choice of the conical angle and, as the case may be, the extent of truncation, the flow of material can be directed optimally. By adjustment of the distance between the cone end and the end of the gas supply, the flow of aerosol can be optimized.
  • the full conical angle is, for example, about 25° and the truncation may be, for example, about 300 ⁇ m with a capillary cross-section of, for example, 400 ⁇ m.
  • the capillary holder with the capillaries consists, for example, of solid ceramic material, such as Al2O3, of glassy carbon or a similar comparatively inert material.
  • a gas supply capillary is accommodated in a holder which serves at the same time as a support for the material supply capillary system and is provided with means for a radial displacement of the gas supply capillary with respect to the material supply.
  • a gas supply capillary is mounted for this purpose, for example, in an adjustable three-point support. More particularly, the holder is provided with a length adjustment mechanism for the gas capillary.
  • a guide surface of the capillary liquid supply system is independently adjustable in an axial direction with respect to the axis of the remaining capillary liquid supply system.
  • Fig. 1 shows a configuration of outlet openings in the proximity of an interaction space of a nebulizer according to the invention
  • Fig. 2 shows an outline of a construction of such a nebulizer.
  • Fig. 1 shows a gas supply 2 and a liquid supply 4 in their relative positioning.
  • the gas supply 2 has a simple tube 6 with, as the case may be, a part of reduced width 8 enclosing a capillary gas supply duct 10.
  • the gas supply capillary has preferably, but not necessarily, a circular cross-section, for example, about 100 to 300 ⁇ m in diameter.
  • the liquid supply device 4 with a tube 12 terminating at an end facing the gas supply in a conical shape is arranged axially opposite to the gas supply capillary at a preferably adjustable distance of, for example, about 0.5 mm from a gas outlet opening 11.
  • a surface 15 of the cone encloses an angle of, for example, 10° - 30° with a tube axis 16 and is truncated at a free end with a guide surface 20 substantially at right angles to the axis 16 having a diameter of, for example, about 300 ⁇ m.
  • the truncated cone thus formed may be circular, like the tube 12, but may also be rectangular, polygonal or elliptical.
  • the tube 12 is provided with liquid supply capillaries 22, four in number in the embodiment shown, which in this case are arranged symmetrically around the axis 16, have a diameter of, for example, about 400 ⁇ m and are located at a distance of, for example, 0.5 mm from the axis 16, calculated to the axis of the capillaries.
  • capillaries are not necessarily circular either, although this is a preferred embodiment.
  • the capillaries merge into the surface 15 of the truncated cone, which for four capillaries may also have, for example, a square cross-section.
  • Liquid with a solution or suspension of material to be examined is supplied through the capillaries 22, flows in the direction of the guide surface 20 and a gas flow from the capillary 10 directed thereto and constitutes at this area a mist or an aerosol, which is transported to an examination space for analysis.
  • the capillaries are arranged, for example, in a tube 12 consisting of a comparatively inert material.
  • Fig. 2 shows the example of a mechanical construction of a nebulizer with a gas supply tube 2 and a liquid supply tube 12.
  • the gas supply tube is clamped in a holder 30, which in this case is connected via a bracket 32 with two axes of rotation 34 and 36 to a housing 40 for the liquid supply tube 12.
  • a support 38 for the bracket 32 is accommodated for this purpose with clamping fit in an opening 42 of the housing 40.
  • the bracket is provided, for example via a screw connection 44, with a connection 46 adjustable from an opposite side of the housing 40.
  • the tube 12 is mounted by means of a conical body 48 and a preferably conical spring 50 in the housing 40.
  • the tube 12 is axially displaceable by means of an adjustment screw 52 and is tiltable by means of a transverse adjustment mechanism shown further in Fig. 2a about the ball 48, as a result of which the discharge direction can be readjusted.
  • the tube 12 is clamped between these abutment surfaces of a tensile spring 54, an X adjustment screw 56 and a Y adjustment screw 58, respectively. It is also possible to utilize an abutment and two compression springs. Otherwise, all suitable forms of mounting and readjustment for the gas and liquid supply of a nebulizer according to the invention may be used.
  • the preferred embodiment described is based on reverse flow of the gas supply and the material supply.
  • transverse flow that is to say that the direction of the flow of gas and the direction of supply of the liquid enclose with each other an angle of, for example, about 90°.
  • the relative adjustment can then be carried out roughly in a corresponding manner. All the desired intermediate forms between reverse flow and transverse flow may be chosen, while also angles larger than 90° may be favourable for given cases.

Landscapes

  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Nozzles (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
EP90203093A 1989-11-27 1990-11-23 Kapillar-Vernebelungsvorrichtung Withdrawn EP0430359A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8902921 1989-11-27
NL8902921A NL8902921A (nl) 1989-11-27 1989-11-27 Capillaire vernevelinrichting.

Publications (1)

Publication Number Publication Date
EP0430359A1 true EP0430359A1 (de) 1991-06-05

Family

ID=19855696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90203093A Withdrawn EP0430359A1 (de) 1989-11-27 1990-11-23 Kapillar-Vernebelungsvorrichtung

Country Status (3)

Country Link
EP (1) EP0430359A1 (de)
JP (1) JPH03181837A (de)
NL (1) NL8902921A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011783A1 (en) * 1995-09-27 1997-04-03 Glaxo Group Limited Atomising nozzle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1475166A1 (de) * 1964-12-11 1969-03-13 Medizintechnik Leipzig Veb Vorrichtung zum Zerstaeuben,Verteilen und Vermlschen von fluessigen und pulverfoermigen Stoffen,insbesondere fuer Inhalationszwecke
EP0146517A2 (de) * 1983-12-19 1985-06-26 Mans Arborelius, Jr. Zerstäubungsapparat zur Verschaffung von homogenen Mikro-Aerosols

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1475166A1 (de) * 1964-12-11 1969-03-13 Medizintechnik Leipzig Veb Vorrichtung zum Zerstaeuben,Verteilen und Vermlschen von fluessigen und pulverfoermigen Stoffen,insbesondere fuer Inhalationszwecke
EP0146517A2 (de) * 1983-12-19 1985-06-26 Mans Arborelius, Jr. Zerstäubungsapparat zur Verschaffung von homogenen Mikro-Aerosols

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997011783A1 (en) * 1995-09-27 1997-04-03 Glaxo Group Limited Atomising nozzle
US5996576A (en) * 1995-09-27 1999-12-07 Glaxo Group Limited Atomising nozzle

Also Published As

Publication number Publication date
NL8902921A (nl) 1991-06-17
JPH03181837A (ja) 1991-08-07

Similar Documents

Publication Publication Date Title
EP0906637B1 (de) Gaszulieferungssystem für behandlung mittels eines geladenen teilchenstrahls
US6032876A (en) Apparatus for forming liquid droplets having a mechanically fixed inner microtube
US7424980B2 (en) Nano-electrospray nebulizer
CA2227331A1 (en) Microscale fluid handling system
US6848633B2 (en) Spray device
CN101522354A (zh) 插入部件、具有该插入部件的气体透镜和具有该气体透镜的焊炬
JP2003517576A (ja) 質量分析のための交互圧力勾配を有する空気圧補助エレクトロスプレー装置
US4742959A (en) Snow gun
EP0430359A1 (de) Kapillar-Vernebelungsvorrichtung
US5904294A (en) Particle spray apparatus and method
CA2257141A1 (en) Sample delivery module for particle acceleration apparatus
US5214260A (en) Electrical discharge machine wire electrode guiding device
CA1043836A (en) Ultrasonic spraying device
CN210997039U (zh) 用于激光加工头的用于冷却工件的陶瓷件
JP2007511746A (ja) エレクトロスプレー用途のための改良した装置および方法
US4703921A (en) Rotary slot dog
US20220148870A1 (en) Analytic nebuliser
US3596128A (en) Excitation source for spectroscopic analysis
JP2542074B2 (ja) 粉体噴霧銃
CA2282784C (en) An assembly for coupling an ion source to a mass analyzer
US20040067578A1 (en) Electrospray interface
EP0845300A3 (de) Flüssigkeitszerstäubungsdüse
US5409170A (en) Impaction classifier
EP0463103A1 (de) Durchlaufelektrodenführungsvorrichtung für elektroerosionsmaschine.
CA2221613A1 (en) Cyclone

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB

17P Request for examination filed

Effective date: 19911204

17Q First examination report despatched

Effective date: 19930212

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930623