EP4389295A1 - Filtre pour corps de buse conique creuse - Google Patents

Filtre pour corps de buse conique creuse Download PDF

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Publication number
EP4389295A1
EP4389295A1 EP23213377.7A EP23213377A EP4389295A1 EP 4389295 A1 EP4389295 A1 EP 4389295A1 EP 23213377 A EP23213377 A EP 23213377A EP 4389295 A1 EP4389295 A1 EP 4389295A1
Authority
EP
European Patent Office
Prior art keywords
hollow cone
filter
nozzle body
channel
filter arrangement
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.)
Pending
Application number
EP23213377.7A
Other languages
German (de)
English (en)
Inventor
Milena Angelika Marszalek
Sebastian Rother
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.)
Aero Pump GmbH
Original Assignee
Aero Pump 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 Aero Pump GmbH filed Critical Aero Pump GmbH
Publication of EP4389295A1 publication Critical patent/EP4389295A1/fr
Pending legal-status Critical Current

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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
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3436—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a plane perpendicular to the outlet axis
    • 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
    • B05B1/34—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl
    • B05B1/3405—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl
    • B05B1/341—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet
    • B05B1/3421—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber
    • B05B1/3431—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves
    • B05B1/3442—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to influence the nature of flow of the liquid or other fluent material, e.g. to produce swirl to produce swirl before discharging the liquid or other fluent material, e.g. in a swirl chamber upstream the spray outlet with channels emerging substantially tangentially in the swirl chamber the channels being formed at the interface of cooperating elements, e.g. by means of grooves the interface being a cone having the same axis as the outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/40—Filters located upstream of the spraying outlets

Definitions

  • the present invention relates to a hollow cone nozzle body with at least one nozzle geometry, at least one vortex chamber and at least one vortex channel, wherein the vortex chamber opens tangentially into the vortex chamber.
  • fluid is fed into the vortex chamber via a vortex channel, with the vortex channel opening tangentially into the vortex chamber. This causes the fluid to rotate within the vortex chamber until it is finally ejected through the nozzle geometry. During the ejection process, the fluid is pressed from the vortex chamber through the nozzle geometry, with the fluid being atomized as it exits the nozzle geometry. This creates an aerosol.
  • the vortex chamber and the nozzle geometry can be arranged rotationally symmetrically around a common axis. This is referred to as a symmetrical hollow cone nozzle geometry.
  • the vortex chamber can be designed asymmetrically, with a nozzle geometry arranged at the end of the vortex chamber.
  • An asymmetrical nozzle geometry is referred to as an asymmetrical hollow cone nozzle.
  • the hollow cone nozzle bodies are manufactured, for example, by an injection molding process.
  • hollow cone nozzle blanks manufactured by an injection molding process can also be processed by laser to form a hollow cone nozzle body. Due to the advancement of accuracy and machining precision, ever smaller dimensions of the individual geometries, such as the nozzle geometry, the swirl chamber and/or the swirl channel, are possible. Due to the ever smaller dimensions, small particles can lead to the Nozzle geometry, the vortex chamber and/or the vortex channel are clogged. This leads to the hollow cone nozzle body no longer functioning properly.
  • the at least one vortex channel has at least one filter arrangement.
  • This filter arrangement can filter out particles that are in the fluid. This means that downstream fluid-carrying geometries, such as the vortex chamber, the vortex channel and/or the nozzle geometry, can no longer be blocked by the filtered-out particles. This ensures that the hollow cone nozzle body is used properly.
  • the at least one filter arrangement is integrated in the hollow cone nozzle body.
  • the filter arrangement and the hollow cone nozzle body are designed as one piece.
  • the filter arrangement can be created, for example, as part of the manufacturing process of the hollow cone nozzle body.
  • the use of a filter arrangement according to the invention keeps assembly costs to a minimum. This leads to good cost efficiency.
  • existing manufacturing methods and processes do not have to be adapted, but can also be used for the inventive arrangement of a filter arrangement in the hollow cone nozzle body. Accordingly, assembly costs are kept low.
  • the filter arrangement preferably has at least one filter channel.
  • the filter channel is essentially oriented along the vortex channel.
  • a filter channel has an elongated extension, so that, for example, at high pressures, particles cannot simply be pushed through the filter channel. Rather, such particles remain stuck in the filter channel, so that good use of the hollow cone nozzle body can be ensured.
  • the filter arrangement can, for example, have one, two, three or more filter channels. If more than one filter channel is provided, fluid can be transferred through the remaining filter channel if one filter channel is blocked. This ensures use of the hollow cone nozzle body.
  • the at least one filter channel has a first cross-sectional area that is smaller than a second cross-sectional area of the nozzle geometry.
  • the first cross-sectional area refers to the cross-sectional area of an individual filter channel. This prevents particles from overcoming the filter arrangement and then clogging the nozzle geometry. Rather, particles are filtered out by the filter arrangement so that these particles can no longer clog the nozzle geometry. This ensures that the hollow cone nozzle body can be used.
  • the filter arrangement preferably has a third cross-sectional area that is arranged perpendicular to the flow direction, wherein a width of the third cross-sectional area is a multiple of a height of the third cross-sectional area, wherein the width is arranged perpendicular to the height.
  • the flow direction corresponds to the flow direction of the fluid that is to be ejected through the nozzle geometry.
  • the filter arrangement is arranged in the vortex channel, so that the flow direction corresponds to the flow direction of the vortex channel.
  • the width of the third cross-sectional area corresponds to the total width of all filter channels, while the height corresponds to the height of the filter channels. As a result, a flat arrangement of the filter arrangement is achieved. This arrangement is easy to produce.
  • the filter arrangement preferably ends at an upper boundary of the at least one vortex channel.
  • the filter arrangement is thus integrated in the at least one vortex channel. This ensures good sealing. Furthermore, other components of a hollow cone nozzle spray can be used without having to adapt them. This ensures good economic efficiency.
  • the at least one vortex channel is wider in the area of the filter arrangement than in the remaining areas of the at least one filter channel. This allows the filter arrangement to be dimensioned accordingly to continue to ensure good fluid permeability. In addition, fluid resistance caused by the filter arrangement is kept low. This also allows unrestricted use of the hollow cone nozzle body.
  • the filter arrangement can preferably be manufactured by an injection molding process and/or laser processing. This means that the filter arrangement can be realized within the scope of the already known manufacturing options for hollow cone nozzle bodies. This represents a cost-effective measure.
  • Fig.1 shows a hollow cone nozzle body 1, which has a nozzle geometry 2, a vortex chamber 3, a vortex channel 4 and a filter arrangement 5. Fluid is transferred from the left side of the filter arrangement through the filter arrangement in order to then be introduced tangentially into the vortex chamber 3 via the vortex channel 4. There, the fluid is set in rotation and then ejected through the nozzle geometry 2.
  • Fig.2 shows a sectional view of the Fig.1 shown hollow cone nozzle body 1 along the line AA.
  • the hollow cone nozzle body 1 with the filter arrangement 5 the vortex chamber 3 and the nozzle geometry 2 are shown.
  • the vortex chamber 3 is funnel-shaped. Fluid is fed tangentially through the vortex channel 4 at the wide end of the funnel. The fluid is set in rotation within the vortex chamber 3 in order to then be ejected through the nozzle geometry 2. The fluid is transferred to an ejection recess 6 on the outside of the hollow cone nozzle body.
  • the filter arrangement 5 ends at a level with an upper limit of the vortex channel 4.
  • the vortex channel 4 is shown by a dashed line.
  • Fig.3 shows the detail X, which shows the filter arrangement 5 in detail.
  • the filter arrangement 5 is made in one piece with the hollow cone nozzle body 1 and has four filter channels 7 in the present embodiment. Fluid is fed from a left side of the filter arrangement 5 through the filter channels 7 transferred to the right side of the filter arrangement. From the right side of the filter arrangement 5, the fluid is then transferred into the vortex channel 4.
  • the filter arrangement serves as a sieve or filter to filter the fluid in order to ultimately prevent the nozzle geometry 2 from becoming clogged.
  • Fig.4 shows a sectional view along the Fig.3
  • the individual filter channels 7 have a semicircular cross-section in the present embodiment, which extends from a surface 8 into the material of the hollow cone nozzle body.
  • the surface 8 also forms the upper boundary of the at least one vortex channel 4.
  • a third cross-sectional area of the filter arrangement 5 is visible.
  • the third cross-sectional area corresponds to a width B of all the fluid channels 7 shown and a height H corresponds to the extension of the fluid channels 7 starting from the surface 8 into the material of the hollow cone nozzle body 1.
  • the fluid channels 7 are arranged next to one another and form a matrix with a column or a row.
  • the at least one filter channel 7 has a first cross-sectional area that is smaller than a second cross-sectional area of the nozzle geometry.
  • the first cross-sectional area corresponds to the area through which fluid is guided.
  • the second cross-sectional area also corresponds to an area through which fluid can be transferred.
  • the second cross-sectional area is the smallest cross-sectional area of the nozzle geometry. Because the first cross-sectional area is smaller than the second cross-sectional area, particles that could clog the second cross-sectional area or the nozzle geometry 2 are filtered out early by the filter arrangement 5.
  • the filter arrangement 5 can already be integrated in the manufacturing process of the hollow cone nozzle body 1.
  • the hollow cone nozzle body 1 can for example, be manufactured entirely by an injection molding process.
  • the hollow cone nozzle body 1 can initially be designed as a hollow cone nozzle blank, which is then processed by laser processing to form a hollow cone nozzle body 1.
  • the vortex channel 4 of the present embodiment has a smaller width than the filter arrangement 5. This allows several filter channels 7 to be arranged next to one another in order to ensure the required flow of the fluid.

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  • Nozzles (AREA)
EP23213377.7A 2022-12-23 2023-11-30 Filtre pour corps de buse conique creuse Pending EP4389295A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022134681.1A DE102022134681A1 (de) 2022-12-23 2022-12-23 Filter für Hohlkegeldüsenkörper

Publications (1)

Publication Number Publication Date
EP4389295A1 true EP4389295A1 (fr) 2024-06-26

Family

ID=89030122

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23213377.7A Pending EP4389295A1 (fr) 2022-12-23 2023-11-30 Filtre pour corps de buse conique creuse

Country Status (3)

Country Link
US (1) US20240207872A1 (fr)
EP (1) EP4389295A1 (fr)
DE (1) DE102022134681A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008951A (ja) * 2002-06-07 2004-01-15 Mitani Valve Co Ltd 噴射ボタン
US20070215723A1 (en) * 2006-03-07 2007-09-20 Boehringer Ingelheim International Gmbh Swirl nozzle
WO2010076012A1 (fr) * 2009-01-02 2010-07-08 Boehringer Ingelheim International Gmbh Composant et inhalateur ainsi que procédé de fabrication d'un composant
US20140291423A1 (en) * 2013-03-29 2014-10-02 Bowles Fluidics Corporation Cup-shaped Nozzle Assembly with Integral Filter Structure
WO2019068878A1 (fr) * 2017-10-06 2019-04-11 WERRTA GmbH Düsen- und Zerstäubungstechnik Corps d'ajutage et dispositif de pulvérisation
JP6960292B2 (ja) * 2016-09-28 2021-11-05 株式会社丸一 噴霧機構の噴口部構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004008951A (ja) * 2002-06-07 2004-01-15 Mitani Valve Co Ltd 噴射ボタン
US20070215723A1 (en) * 2006-03-07 2007-09-20 Boehringer Ingelheim International Gmbh Swirl nozzle
WO2010076012A1 (fr) * 2009-01-02 2010-07-08 Boehringer Ingelheim International Gmbh Composant et inhalateur ainsi que procédé de fabrication d'un composant
US20140291423A1 (en) * 2013-03-29 2014-10-02 Bowles Fluidics Corporation Cup-shaped Nozzle Assembly with Integral Filter Structure
JP6960292B2 (ja) * 2016-09-28 2021-11-05 株式会社丸一 噴霧機構の噴口部構造
WO2019068878A1 (fr) * 2017-10-06 2019-04-11 WERRTA GmbH Düsen- und Zerstäubungstechnik Corps d'ajutage et dispositif de pulvérisation

Also Published As

Publication number Publication date
US20240207872A1 (en) 2024-06-27
DE102022134681A1 (de) 2024-07-04

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