WO2007123538A1 - Dispositif de pulvérisation équipé d'un tube de liquide aligné avec précision et procédé de fabrication - Google Patents

Dispositif de pulvérisation équipé d'un tube de liquide aligné avec précision et procédé de fabrication Download PDF

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Publication number
WO2007123538A1
WO2007123538A1 PCT/US2006/015527 US2006015527W WO2007123538A1 WO 2007123538 A1 WO2007123538 A1 WO 2007123538A1 US 2006015527 W US2006015527 W US 2006015527W WO 2007123538 A1 WO2007123538 A1 WO 2007123538A1
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WO
WIPO (PCT)
Prior art keywords
liquid
liquid tube
holder
tube
disintegrating
Prior art date
Application number
PCT/US2006/015527
Other languages
English (en)
Inventor
Ingo Scheer
Original Assignee
Ingo Scheer
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 Ingo Scheer filed Critical Ingo Scheer
Priority to PCT/US2006/015527 priority Critical patent/WO2007123538A1/fr
Priority to DE112006003848T priority patent/DE112006003848T5/de
Publication of WO2007123538A1 publication Critical patent/WO2007123538A1/fr

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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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02—Burettes; Pipettes
    • B01L3/0241—Drop counters; Drop formers
    • B01L3/0268—Drop counters; Drop formers using pulse dispensing or spraying, eg. inkjet type, piezo actuated ejection of droplets from capillaries

Definitions

  • the present invention relates to an atomizing device comprising a fine tube as fluid path and its method of manufacture for providing a repeatabie performance in terms of droplet size and spatial droplet distribution.
  • the invention is particularly suitable for coating medical devices and for creating fine aerosols.
  • Atomizing devices comprising a fine liquid tube as fluid line are used in various applications, such as medical nebulizers, chemical analysis of liquid samples and coating devices to atomize small amounts of liquids.
  • FIG. 1 depicts an enlarged view of the front section of an exemplary atomizer known by the prior art comprising an inner liquid delivery tube and a support member to secure the liquid delivery tube.
  • a cap may be provided at the exit end of the liquid tube to form an annular gap 106 between the inner liquid delivery tube and the cap surrounding the liquid tube.
  • the support member includes a central bore, having an internal diameter larger than the outside diameter of tube 104, for aligning the liquid tube. Additional points for alignment of the liquid tube (not shown) may be provided by central bores disposed within the support member having slightly larger diameters than the outside diameter of the tube.
  • the liquid tube may be additionally secured by various mechanisms, such as compression fittings as described in U.S. Pat. App. No. US2005/0029442, collet type connections as described in U.S. Pat. No. 6,337,480 or brace like support structure as provided by U.S. Pat. Nos. 5,868,322 and 6,032,876.
  • Optimum atomization and particle transport efficiencies generally depends on the spatial characteristics of the spray plume and on the droplet size which, in turn, depends on the shape of the atomizer tip and/or on the roundness and concentricity of the annular gap. This is particularly true, when an atomizing gas is provided through a comparatively small annular gap.
  • an atomizing device having an outer tube comprising a brace-like support structure for mechanically securing the inner liquid tube.
  • the brace-like support structure comprises gas channels, which may cause constrictions within the flow path.
  • the gas channels which are disposed along the micro tube, constitute limitations for generating a flow field with an angular momentum, which may be desirable to improve the atomization process.
  • Imperfections of the tube tip and/or in the annular region directly translate into an inhomogeneous spray pattern, a relatively wide size range of droplets and increased droplet sizes.
  • the shape and surface quality of the atomizing end at the liquid exit may influence the droplet break up and may result in poor efficiency of the atomization process, particularly in the case of electrostatic atomization.
  • the spray performance of pneumatic atomizers in terms of symmetric spatial particle distribution and tight droplet size distribution, is closely related to the roundness and concentricity of the annular gap. Any imperfection and eccentricity between the axes of the liquid delivery tube and the cap can cause the flow of the atomizing gas to be cylindrically asymmetric with respect to the axis of the liquid exiting from the liquid delivery tube. Hence, inhomogeneous gas velocities within the annular gap will lead to nebulization by the atomizing gas that is different on different sides of the spray plume.
  • One object is to provide an atomizing device comprising a tube holder assembly, wherein the liquid tube is permanently fixed within the holder proximate to the exit end of the liquid tube, and the error of concentricity between the fine liquid tube and holder is compensated by a final machining operation.
  • Yet another object is to modify the shape of the liquid tube holder assembly, particularly of the tip of the liquid tube, to compensate imperfections of the liquid tube for improved atomizer performance.
  • Another object is to provide an pneumatic atomizing device, comprising a tube holder assembly and cap, that ensures the concentric alignment of the tube in relation to the cap to reproducibly generate a uniform spray pattern and small droplets with a tight droplet distribution.
  • Still another object is to provide an atomizing device having a flow path with minimum perturbation of the atomizing gas flow to generate a stable flow field and to achieve a consistent atomization.
  • Another object is to provide a atomizing device having a compact and robust design that can be manufactured reproducibly, resulting in a repeatable performance from one atomizer to the next.
  • a further object is to allow easy assembling and disassembling without the risk of misalignment of the air cap relative to the liquid tube. Yet another object is to provide a manufacturing method for machining the atomizer assembly, which allows shaping of the tip of the liquid tube and results in improved concentricity, roundness and surface quality.
  • a device for disintegrating a liquid into fine droplets comprising at least one fine liquid tube having an outer wall, an entrance end and an exit end, a cap, surrounding and essentially coaxial with the liquid tube, having an exit opening proximal to the exit end of the liquid tube, and a holder with at least one holding section, through which the liquid tube extends.
  • the outer wall of the liquid tube is fixed within the holding section to prevent displacement of the liquid tube in any direction orthogonal to the holding section axis and to allow machining of the liquid tube .
  • holder assembly comprising at least one fine liquid tube having an outer wall, an entrance end and an exit end, a cap, surrounding and essentially coaxial with the liquid tube, having an exit opening proximal to the exit end of the liquid tube, and a holder with at least one holding section, through which the liquid tube extends.
  • At least a portion of the liquid tube and at least a portion of the holder are machined in order to compensate the error of concentricity between the axis of the liquid tube and the axis of the holder.
  • the cap is connected to the machined portion of the holder to provide an annular intermediate space between the liquid tube holder assembly and cap.
  • the annular intermediate space has at least one gas inlet feeding directly into it and at least one exit opening and is free of intermediate structures.
  • the gas inlet may be positioned such that a gas flow field with an angular momentum can be generated.
  • the exit opening of the cap may be manufactured by internal turning to improve roundness.
  • the machining operation of the holder and liquid tube assembly may be performed in one setting.
  • the machining operation of the holder and liquid tube assembly may be performed by turning, using the same finishing cut for the holder and tube.
  • the liquid tube can be permanently fixed within the holding section.
  • the holding section may be disposed proximal to the exit end of the liquid tube.
  • the atomizing device may additionally comprise means for forming an electric field at the exit end.
  • a device for disintegrating a liquid into fine droplets comprising at least one fine liquid tube having an outer wall, an entrance end and an exit end, a holder with at least one holding section through which the liquid tube extends, and means for forming an electric field at the exit end to disintegrate the liquid.
  • the outer wall of the liquid tube is fixed within the holding section to prevent displacement of the liquid tube in any direction orthogonal to the holding section axis and to allow machining of the liquid tube holder assembly.
  • At least a portion of the liquid tube and at least a portion of the holder are machined in order to compensate the error of concentricity between the axis of the liquid tube and the axis of the holder.
  • the machining operation of the liquid tube holder assembly may be performed in one setting.
  • the tube may be permanently fixed within the holding section.
  • the exit end of the liquid tube may be machined so that the tip diameter is reduced and shaped in order to improve the performance of the device.
  • the machining operation of the liquid tube holder assembly may be performed by turning, using the same finishing cut for holder and liquid tube.
  • the liquid tube may be additionally secured and coupled to the electrical means through a compression fitting.
  • a method for machining a device for disintegrating a liquid into fine droplets including a fine liquid tube having an outer wall, an entrance end and an exit end and a holder having at least one holding section for the liquid tube.
  • This method comprises the steps of connecting the liquid tube to the holder so that the outer wall of the liquid tube is fixed within the holding section to allow machining of the liquid tube holder assembly, and machining the holder tube assembly so that at least a portion of the liquid tube and at least a portion of the holder are machined to compensate the error of concentricity between the axis of the liquid tube and the axis of the holder.
  • the cutting operation of the liquid tube holder assembly may be performed by turning, using the same finishing cut for liquid tube and holder.
  • a method for machining a device for disintegrating a liquid into fine droplets including a fine liquid tube having an outer wall, an entrance end and an exit end and a holder having at least one holding section for the liquid tube.
  • This method comprises the steps of machining the holding section for the liquid tube by internal turning, wherein at least a portion of the final holder shape is machined in the same setup, and connecting the liquid tube to the holder so that the outer wall of the liquid tube is fixed within the holding section and the liquid tube is located at a predetermined position in relation to the holder.
  • FIG. 1 (Prior Art) is a longitudinal cross-sectional view of the front portion of a conventional atomizer;
  • FIG. 2 is a longitudinal cross-sectional view of the front portion of the atomizer of the present invention;
  • FIG. 3 is a diagrammatic representation of a manufacturing procedure for machining a tube holder assembly comprising a final machining operation;
  • FIG. 4A is a longitudinal cross-sectional view of a holder having a holding section for the liquid tube
  • FIG. 4B is a longitudinal cross-sectional view of a tube holder assembly before machining
  • FIG. 4C is a longitudinal cross-sectional view of a tube holder assembly after machining
  • FIG. 5A is a longitudinal cross-sectional view of a atomizer (tube holder assembly) without cap
  • FIG. 5B is an expanded view of the tip region of the atomizer shown in FIG. 5A
  • F! ⁇ . 6A is a l ⁇ ?n ⁇ itL"1inal cross-sectional view of an atomizer comprising a cap and a connection to a high voltage source;
  • FIG. 6B is a longitudinal expanded view of the gas passage defined by the intermediate space between tube holder assembly and cap;
  • FIG. 6C is a 3-D view of the gas passage defined by the intermediate space between tube holder assembly and cap;
  • FIG. 7 is a diagrammatic representation of a manufacturing procedure for machining a tube holder assembly
  • FIG. 8A is a longitudinal cross-sectional view of a holder comprising a holding section for the liquid tube
  • FIG. 8B is a longitudinal cross-sectional view of a tube holder assembly
  • FIG. 8C is a longitudinal cross-sectional view of a mounting fixture
  • FIG. 9 (Prior Art) is a spatial droplet distribution generated by a conventional atomizer
  • FIG. 10 is a spatial droplet distribution generated by the atomizer of the present invention
  • FIG. 11 is a comparison of the droplet size distributions between an atomizer of the Prior Art and of the present invention
  • FIG. 12 is a comparison of the COV between an atomizer of the Prior Art and of the present invention.
  • the invention provides a compact atomizing device for reproducibly forming droplets from a liquid with improved operational stability, reliability and reproducibility compared to prior art atomizing devices.
  • the atomizer is designed to allow precise and repeatable machining of the liquid tube holder assembly according to the manufacturing procedure described later herein.
  • the liquid tube is embedded in a holding section between the liquid tube and the surrounding holder, and is disposed towards the exit end to provide support for the liquid tube resulting in minimum perturbation of the atomizing gas flow.
  • the invention provides an atomizer comprised of at least one liquid tube holder unit, the liquid tube permanently embedded in the holder proximate to the liquid exit end.
  • the liquid tube and holder are positioned in a concentric arrangement about a common central axis and the tube is secured in a centered position.
  • the invention further provides a cap which, when coupled with the liquid tube holder unit, provides a conduit for the atomizing gas.
  • the cap may be removably secured by a thread and aligned through a centering section between the holder and cap, so that a ooncent ⁇ c alignment between the liquid tube and the cap as well as repeatable assembly and disassembly can be provided.
  • FIG. 2 illustrates the front section of the atomizer of the present invention comprising liquid tube
  • the holder is preferably made from stainless steel or from a polymeric material, such as polyetheretherketone (PEEK).
  • PEEK polyetheretherketone
  • the tube can be constructed from any material which is impervious to chemical attack by the solution to be sprayed and which allows machining by cutting.
  • the tube is preferably made from stainless steel or from a polymeric material.
  • the outside diameter of the tube may range between approximately 0.3 and 1.615 mm depending on the particular application. All dimensions used herein are suggestive and not intended to be restrictive.
  • liquid tube 11 extends axially within holder 2 to a position slightly beyond air cap 3. Alternatively, the liquid tube may be flush with the cap or may be placed at a recessed position with respect to the cap.
  • Tube 11 is permanently connected to support holder 2 by joint 17.
  • Joint 17 is disposed next to the atomizing end of tube 11 and secures tube 11 along its entire perimeter.
  • the axis of the tip of tube 19 is concentric with the axis of location shoulder 34 for cap 3.
  • Cap 3 is aligned with location shoulder 34, which locates the axis of the tube holder assembly to be concentric with the axis of cap 3.
  • Cap 3 is secured to the liquid tube holder assembly by thread 36 and a small annular gap 16 to permit passage of gas is provided.
  • the tip diameter of tube 19 and cap orifice diameter 20 define the width of the annular gap.
  • the holder secures the tube in a centered position and allows finish machining of the assembly and shaping of the tip of the tiny tube.
  • the tip of liquid tube 19 and the outside shape of the holder are machined in one setting, preferably by a turning operation.
  • the contour of the machined section is illustrated by line 42.
  • the final machining operation of the tube holder assembly compensates errors in concentricity. Hence, a proper and stable alignment of tube 11 in relation to location shoulder 34 of holder 2 can be ensured.
  • the roundness of orifice 20 of cap 3 and the tip of liquid tube 19 are crucial for the uniformity and repeatability of the atomization process.
  • orifice 20 of air cap 3 and tip of liquid tube 19 are preferably machined using a precision turning operation.
  • the liquid is fed at the liquid inlet, while the atomizing gas is fed in gas inlet 5, located in the cap and flows through gas passage 6 defined by the intermediate space between the tube holder assembly and cap to the exit end aperture and exits the atomizer at the annular gap formed between the liquid tube and the cap orifice.
  • the atomizing gas disintegrates the liquid when it exits the liquid orifice.
  • the liquid and gas are mixed outside the atomizer to obtain an aerosol.
  • the concentricity between the axis of liquid tube 19 and orifice 20 of cap 3 can be substantially optimized compared to prior art atomizers. Consequently, the annular flow of the atomizing gas is very uniform about the spray axis, resulting in a symmetrical spray pattern.
  • FIG. 3 a manufacturing procedure as diagrammatically shown in FIG. 3 and illustrated in FIGS. 4A-C may be adopted.
  • holder 2 may be manufactured from a solid rod.
  • centering or holding section 37 and holder outside diameter 12 are preferably machined in the same setting by turning using a precision lathe. Internal turning is preferred for centering section 37 because there is a minimized risk of out-of-roundness compared to other machining operations such as drilling.
  • centering section 37 may have a diameter of approximately 0.3 to 2 mm and a length ranging from 2 to 6 mm.
  • liquid tube 11 is mounted within holder 2. To ensure a stable connection between holder 2 and liquid tube 11, at least one permanent joint is provided between the holder and the tube.
  • Additional joints may also be provided for improved stability of the tube and to facilitate machining of the assembly.
  • member 18 may secure the tube at the liquid inlet end resulting in permanent joint 23, which may be obtained through press or shrink fit or by using an adhesive.
  • a removable connection such as a compression fitting, can be used to obtain a non-permanent joint.
  • permanent joint 17 between holder 2 and liquid tube 11, which secures liquid tube 11 along its entire 75 perimeter can be obtained as described below. If joint 17 is obtained by a press or shrink fit connection, the diameter of centering section 37 is machined slightly smaller than the outside diameter of liquid tube 11.
  • Holder 2 may be heated and liquid tube 11 cooled down to create a temperature difference between both parts . Then, tube 11 is pressed into holder 2 until face 13 of liquid tube 11 and face 14 of holder 2 flush. Alternatively, a permanent joint may be obtained by bonding liquid tube 11 to holder 2.
  • FIG. 4C depicts machined section 42 of the liquid tube holder unit after a final machining operation. Machined section 42 may extend from the center of liquid
  • tube tip 19 to the outside cylindrical surface of holder 2 and may comprise location shoulder 34 and threaded section 36 for alignment and connection of the cap.
  • the final machining operation compensates possible imperfections of premanufactured liquid tubes and allows shaping of the tip to customize the atomizing device for the particular application.
  • FIG. 5B is an enlarged view of the tube holder unit having machined section 42, which extends to a tapered portion towards the exit end of tube 11.
  • a stainless steel tube with a relatively large outside diameter resulting in an enlarged holding section may by used. For example, when a tube with an outside diameter of Vi 6 inch, an inside diameter of approximately 0.2
  • the holder can be made from a polymeric material such as polyetheretherketone (PEEK).
  • PEEK polyetheretherketone
  • the tube holder unit is preferably machined by turning. The resulting machined section 42, extends from atomizer tip 19 to the cylindrical outer surface of the holder and comprises two centering sections 34 and a threaded section 36
  • the tip of the tube has a decreasing outside diameter towards the liquid orifice.
  • Liquid tube 11 and holder 2 are machined using the same finishing cut, resulting in a smooth transition between the tapered section of liquid tube 11 and the tapered section of holder 2.
  • the tapered section of the tube holder assembly is precision machined to obtain a smooth shape and an impingement angle for the atomizing gas resulting in an unobstructed gas flow for improved effectiveness of the atomization
  • FIG. 6A illustrates an exemplary atomizer according to the present invention comprising holder 2, tapered liquid tube 11, and optional cap 10.
  • the liquid tube holder unit is designed to compensate the errors in concentricity between tip 19 of liquid tube 11 and holder 2 and to provide superior roundness of the shaped tube.
  • the liquid tube holder unit is machined according to the manufacturing procedure
  • Tube 11 is made from stainless steel and holder 2 and cap 10 are fabricated from a dielectric material, poiyetheretherketone (PEEK), polytetrafluoroethylene (PTFE, or Teflon), and the like. Tube 11 is permanently fixed into holder 2 to facilitate subsequent machining of the tube holder assembly. For improved alignment of cap 10 in relation to holder 2, two centering sections 7 having different outside diameters are provided. Liquid tube 11 is connected to holder 2 via permanent
  • FIG- RB shows gas passage 6 defined by the intermediate space between the tubp holder
  • the atomizing gas is introduced at tangential gas inlet 5 and flows towards annular gap 16 provided between the cap and tube holder assembly.
  • a gas flow with an angular momentum is generated, resulting in a flow field with axial and radial velocity components and increased shear forces at the atomizer orifice.
  • the liquid flows through the liquid tube to the atomizing end and is
  • gas passage 6 is designed to minimize turbulence and to produce a stable gas flow, thereby ensuring a consistent atomization of the liquid to be sprayed.
  • the atomizer may also be used without cap 10 to atomize the liquid using only electrostatic energy.
  • centering sections 34 may be used for alignment of the tube holder unit. In operation, a fine spray of charged droplets is produced when the liquid flows from the end of the liquid tube and emerges from orifice15 of tube 11 in the presence of a high electric field. The electric field causes a disruption of the liquid surface
  • holder 2 comprises location shoulder 34 for the cap and holding section 37 for the liquid tube.
  • the diameter of location shoulder 34 and the inner diameter of liquid tube holder centering section 37 are machined in the same setup to ensure proper alignment of cap 3 in relation to liquid tube 1.
  • Location shoulder 34 for cap 3 is preferably manufactured by external turning and centering section 37 for liquid tube 1 by internal turning.
  • holder 2 and liquid tube 1 are precisely aligned and fixed by a permanent joint.
  • a permanent joint may be obtained by shrink fit, press fit or bonding.
  • the internal centering diameter of centering section 37 is machined slightly smaller than the outside diameter of liquid tube 1.
  • Holder 2 may be heated until its internal centering diameter is larger than the outside diameter of liquid tube 1 to obtain a shrink fit connection.
  • liquid tube 1 is placed into holder 2 at a predefined distance from holder tip.
  • a permanent joint may be obtained by bonding liquid tube 1 to holder 2.
  • centering section 37 of holder 2 is machined slightly larger than the outside diameter of liquid tube 1 and a thin film of adhesive is applied to the outside surface of liquid tube 1 to secure it to holder 2.
  • a mounting fixture such as illustrated in FIG. 8C, may be used to assemble liquid tube and holder.
  • the spatial droplet distribution and the droplet size distribution have been measured and compared to an exemplary atomizer known by the prior art.
  • the atomizers used were pneumatic atomizers having a fine liquid tube with an internal diameter of approximately 0.2 mm.
  • the prior art atomizing device comprises a removable tube secured using a compression fitting.
  • the front section of prior art atomizing device is shown in FIG 1.
  • the atomizing device of the present invention includes a permanently fixed micro tube, fabricated according to the manufacturing procedure of FIG. 3.
  • the spray pattern was measured 20 mm downstream from the nozzle orifice using an Optical Patternator.
  • the liquid to be atomized (Dl Water) was supplied by a syringe pump (manufactured by Hamilton Company, Reno, NV) at a flow rate of 15 ml/h and the gas (air) was fed at a pressure of 0.7 bar.
  • FIG. 9 depicts the spray pattern of the prior art atomizing device.
  • the spray pattern has an asymmetric spray distribution comprising coarse particles in the right portion, depicted by line 81.
  • the asymmetric spray distribution may be caused by inhomogeneous gas velocities within the annular gap resulting from a misalignment of the liquid tube in relation to the cap and/or from poor roundness of the annular gap.
  • the spray pattern of the atomizer of the current invention as shown in FIG. 10, has a homogeneous spatial droplet distribution.
  • the liquid to be sprayed was supplied by a syringe pump (manufactured by Hamilton Company, Reno, NV) at a flow rate of 3.5 ml/h and the atomizing gas was fed at a gas pressure of 1.0 bar. Eight measurement runs have been conducted during a spray time of approximately 5 minutes.
  • the atomizing device of the current invention provides a comparatively homogeneous droplet size distribution during the whole spray run.
  • FIG. 12 illustrates the coefficient of variation (COV) of both atomizers, which can be used as a
  • the repeatable spray performance indicates that the liquid atomization has been improved by optimizing the atomization region in terms of concentricity between the liquid tube and annular gap, surface quality and by providing a securing mechanism which prevents misalignment of the liquid tube during operation.

Abstract

La présente invention concerne un dispositif de pulvérisation qui comprend un mince tube de liquide, un support pour fixer de manière permanente le tube à proximité de son extrémité de sortie et éventuellement un bouchon afin de dissocier de manière répétée et homogène de petites quantités de liquide. L'invention porte aussi sur un procédé de fabrication qui permet d'usiner de manière reproductible l'ensemble dispositif de pulvérisation de la présente invention.
PCT/US2006/015527 2006-04-24 2006-04-24 Dispositif de pulvérisation équipé d'un tube de liquide aligné avec précision et procédé de fabrication WO2007123538A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/US2006/015527 WO2007123538A1 (fr) 2006-04-24 2006-04-24 Dispositif de pulvérisation équipé d'un tube de liquide aligné avec précision et procédé de fabrication
DE112006003848T DE112006003848T5 (de) 2006-04-24 2006-04-24 Vorrichtung zur Zerstäubung mit präzise ausgerichteten Flüssigkeitsröhrchen und Fertigungsmethode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2006/015527 WO2007123538A1 (fr) 2006-04-24 2006-04-24 Dispositif de pulvérisation équipé d'un tube de liquide aligné avec précision et procédé de fabrication

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WO2007123538A1 true WO2007123538A1 (fr) 2007-11-01

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WO (1) WO2007123538A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE102020132999A1 (de) 2020-12-10 2022-06-15 Hekuma Gmbh Vorrichtung zum Versprühen von Medien an Innenseiten medizinischer Produkte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376514A (en) * 1978-09-26 1983-03-15 Imperial Chemical Industries Plc Holder for electrostatic spraying of liquids
US4964568A (en) * 1989-01-17 1990-10-23 The Perkin-Elmer Corporation Shrouded thermal spray gun and method
US6010084A (en) * 1996-07-18 2000-01-04 Abb Industry K.K. Paint spraying device
US6142457A (en) * 1998-01-30 2000-11-07 Mobil Oil Corporation Atomizing feed nozzle

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868322A (en) 1996-01-31 1999-02-09 Hewlett-Packard Company Apparatus for forming liquid droplets having a mechanically fixed inner microtube
GB2342499B (en) 1997-03-15 2002-04-03 Analytica Of Branford Inc Disposable microtip probe for low flow electrospray

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376514A (en) * 1978-09-26 1983-03-15 Imperial Chemical Industries Plc Holder for electrostatic spraying of liquids
US4964568A (en) * 1989-01-17 1990-10-23 The Perkin-Elmer Corporation Shrouded thermal spray gun and method
US6010084A (en) * 1996-07-18 2000-01-04 Abb Industry K.K. Paint spraying device
US6142457A (en) * 1998-01-30 2000-11-07 Mobil Oil Corporation Atomizing feed nozzle

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