EP0946305A1 - Dispositif de production d'aerosol - Google Patents

Dispositif de production d'aerosol

Info

Publication number
EP0946305A1
EP0946305A1 EP97953853A EP97953853A EP0946305A1 EP 0946305 A1 EP0946305 A1 EP 0946305A1 EP 97953853 A EP97953853 A EP 97953853A EP 97953853 A EP97953853 A EP 97953853A EP 0946305 A1 EP0946305 A1 EP 0946305A1
Authority
EP
European Patent Office
Prior art keywords
gas jet
impact body
aerosol
outlet
injector
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.)
Granted
Application number
EP97953853A
Other languages
German (de)
English (en)
Other versions
EP0946305B1 (fr
Inventor
Jens Hesselbach
Heinz Karle
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.)
SKF Lubrication Systems Germany GmbH
Original Assignee
PE Product Engineering 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 PE Product Engineering GmbH filed Critical PE Product Engineering GmbH
Publication of EP0946305A1 publication Critical patent/EP0946305A1/fr
Application granted granted Critical
Publication of EP0946305B1 publication Critical patent/EP0946305B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/25—Mixing by jets impinging against collision plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/16—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area
    • B05B12/18—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling the spray area using fluids, e.g. gas streams
    • 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
    • B05B7/0012—Apparatus for achieving spraying before discharge from the apparatus

Definitions

  • Aerosol generating device
  • the invention relates to a device for aerosol generation, in particular in a cooling lubrication device for tools or workpieces, with an injector device to which a carrier gas and a liquid can be fed and which emits a gas jet with liquid droplets contained therein at an outlet.
  • Aerosols are used in many areas of technology, for example inhalers in medical technology, humidifiers in household technology, the application of cleaning agents or protective agents, etc.
  • aerosols for cooling or lubricating a tool or a workpiece, which is assumed as an example below.
  • a liquid cooling lubricant is atomized in a jet in an air stream.
  • the liquid cooling lubricant and the air are fed to the nozzle in separate lines, the air stream emerging from the nozzle at a relatively high speed mixing with the cooling lubricant after exiting the nozzle.
  • Systems are also known in which the mixture mist is generated within the nozzle. The spray of the cooling lubricant-air mixture is applied directly to the surfaces to be treated, which results in good cooling and
  • Lubrication effect on the tools and workpieces can be achieved. Furthermore, there is the advantage that the consumption of cooling lubricant is significantly reduced and thus the problem of disposal is reduced.
  • the cooling lubricant mist generated in the manner mentioned is relatively inhomogeneous with regard to the droplet size. Although this is relatively unproblematic with the so-called external cooling, in which the cooling lubricant is applied from the outside to the parts to be cooled, problems arise with the so-called internal cooling, in which the cooling lubricant mist runs through internal channels in the tool is conveyed directly into the contact area between tool and workpiece.
  • the invention has for its object to provide a device for aerosol generation, with which an aerosol with a small particle size can be reliably obtained.
  • This object is achieved in a device for aerosol generation in that the gas jet is directed to an impact body with a structured surface and flows along it.
  • the lubricating liquid is sucked in in a known manner by means of a negative pressure and atomized in a jet of a carrier gas, preferably air.
  • the carrier gas is introduced under pressure into a chamber of the injector device, a vacuum being created as a result of the enlargement of the cross section, which conveys the lubricating liquid from its line also opening into the chamber and supplies the carrier gas stream at high speed.
  • the lubricant is carried along with the carrier gas flow and is distributed finely distributed on the structured surface of the impact body. Since the carrier gas flow flows over the structured surface of the impact body at high speed, it atomizes the lubricating liquid film that forms on the structured surface into an aerosol of small particle size.
  • the size of the particles and the amount of aerosol in the device for aerosol production according to the invention can preferably be changed in that both the supply of the lubricant and the supply of the carrier gas can be controlled separately via valves.
  • the greasiness of the aerosol can be varied continuously in this way.
  • the impact body is arranged in front of the outlet of the injector device and is preferably designed as a rotationally symmetrical body with a structured lateral surface. shapes. It has proven particularly useful if the
  • Impact body has a tapered shape, preferably tapering at its end facing the gas jet.
  • a cone or truncated cone can thus be used as the impact body.
  • the tip of the cone or the narrow end of the truncated cone is preferably arranged directly at the outlet of the injector device, so that the gas jet strikes the cone or truncated cone at this point.
  • the outlet of the injector device is flared in the direction of flow of the gas jet.
  • the conical or frustoconical baffle body can partially protrude into the outlet, so that a flow channel is formed between the inner wall of the outlet and the outer wall of the baffle body.
  • the distance between the impact body and the outlet of the injector device for the gas jet can be changed.
  • the dimension of the aforementioned flow channel can also be changed. It has been shown that the particle size can be varied by varying the distance, since this affects
  • Way also changes the speed of the gas jet. The higher the speed of the gas jet, the finer the particle size of the aerosol generated.
  • the concentration of the aerosol in the gas jet depends on the shape of the structured surface, for example the step structure, of the impact body.
  • the steps each have an acute-angled tear-off edge, as a result of which the lubricant droplets drop in great measure small size are carried away by the gas flow.
  • the steps below their tear-off edge can have an undercut in order to obtain a particularly sharp tear-off edge.
  • the steps have a tapering projection on their tear-off edge, which is preferably directed in the opposite direction to the incoming gas jet.
  • the gas stream containing the aerosol is preferably filtered one or more times after overflowing the impact body.
  • a sharp deflection of the gas flow can also be regarded as a filter, as a result of which the heavy and thus larger particles can be separated.
  • a further development of the invention can also provide that the gas stream flowing along the structured surface is enveloped by a jacket gas jet, in particular made of air.
  • the jacket gas jet which can be generated with a ring nozzle known per se, accelerates the aerosol and thus supports the separation of larger particles, while the finest particles can penetrate the jacket gas jet.
  • a sieve filter and / or a cyclone can also be provided as the filter device.
  • the latter can also be designed as a buffer for the aerosol in order to be able to compensate for fluctuations in removal.
  • the generation of the aerosol does not require any moving parts, so that high process reliability is guaranteed.
  • the amount of aerosol generated depends on the amount withdrawn Consumers. If a large amount of aerosol is removed, the corresponding amount of air flows into the aerosol chamber, the internal pressure in the chamber remaining constant and corresponding to the operating pressure set on a pressure reducing valve which is upstream of the chamber. The amount of aerosol that can be generated therefore depends on the amount of air that is supplied to the system.
  • FIG. 1 shows a perspective view, partially in section, of a container of a cooling lubrication device with several associated tools
  • Figure 2 shows a cross section of a device for
  • FIG. 3 shows detail III in FIG. 2,
  • FIG. 4 shows a 1st alternative embodiment of the
  • Figure 5 shows a second alternative embodiment of the
  • a cooling lubrication device 30 has a container 31 which contains a supply 32 of liquid cooling lubricant, for example oil, in its lower region.
  • the container 31 is closed by a lid 33 and designed as a pressure container.
  • an aerosol which is formed by a compressed air flow via a line 35, in which a control valve 18 is arranged, and a further line 17 is fed to an injector device 16.
  • a negative pressure is created, by means of which oil is sucked into the injector device 16 via a suction line 34, an adjusting device 37, which comprises a control valve 37b and a shutdown device 37a for quick shutdown, and a further line 36 from the supply 32 becomes.
  • the volume flow of the oil in the suction line 34 can be steplessly controlled.
  • connection line 38 is provided, through which aerosol can be removed from the container 31 in order to use it for internal cooling, for example.
  • the promotion of the aerosol through the connecting line 38 can by the internal pressure in
  • Container 31 take place.
  • a suction nozzle 39 is additionally provided, which is supplied with compressed air via a line, not shown. The air is introduced into the suction nozzle 39 in the conveying direction, so that the air flow sucks in the aerosol, the oil particles being swirled again and accelerated.
  • the aerosol flow A can be distributed over a plurality of branch lines 27 and can be supplied in these different machine tools 28 with corresponding tools 29.
  • an internal cooling system is shown by way of example in FIG. 1, in which the aerosol is conveyed through channels running in the tool 29 and exits at the tool tip, the external cooling system known per se can alternatively or additionally be used.
  • the device 10 for aerosol generation is shown in detail in FIG. It comprises the injector device 16 with an injector block 11, in the interior of which an injector chamber 22 is formed. Compressed air G can be fed to injector chamber 22 via line 35, control valve 18 and further line 17. When entering the injector chamber 22, a vacuum is created as a result of the increase in cross section, as a result of which oil F enters the injector chamber via the suction line 34, the adjusting device 37 and the further line 36
  • the injector chamber 22 At its outlet 23, at which the compressed air exits as a gas jet 25 with liquid droplets contained therein, the injector chamber 22 is flared.
  • a conical baffle 13 is arranged below the outlet 23, the lateral surface 13a of which is a staircase structure with a large number of successive ones
  • the cone is oriented so that its tip 13b faces the outlet 23 of the injector device 16 and partially into the flared outlet
  • the conical baffle 13 is held on the cover 33 of the container 31 by means of holding rods 12.
  • the injector block 11 has an adjusting device 15 penetrating the cover 33 of the container 31, by means of which the distance from the impact body 13 can be changed (as indicated by the double arrow V).
  • the injector block 11 is guided on a plurality of guide pins 14 which are arranged on the impact body 13 and which engage in corresponding recesses 24 in the injector block 11 such that they can be moved.
  • Arranged over the circumference of the injector block 11 is an annular nozzle 21 which emits a downward-directed jacket air jet 26 which envelops the gas jet 25.
  • the gas jet 25 formed in the injector chamber 22 with liquid droplets contained therein strikes the stepped surface 13a of the impact body 13, whereupon the liquid droplets first settle on the step surfaces.
  • the inflowing air of the gas jet 25 then entrains the finest droplets of the oil at the tear-off edges 13d of the steps 13c shown in FIG. 3, so that an aerosol with very fine oil particles results overall.
  • the aerosol flow is directed laterally outwards and is thereby deflected strongly, which the heavy particles cannot follow, which fall further down into the oil reservoir 32.
  • This is also favored by the outer jacket air jet 26, which entrains the larger particles and returns them to the oil reservoir 32.
  • the fine particles can penetrate the jacket air jet 26 and accumulate in the space above the oil reservoir 32.
  • the injector block 11 can be moved relative to the impact body 13. If the cross section of the flow channel formed between the tip 13b of the baffle 13 and the conical outlet 23 is reduced by a movement of the injector block 11 and the baffle 13 towards one another, the flow velocity of the gas jet 25 is increased, whereby an aerosol with smaller particles is increased results.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nozzles (AREA)
  • Lubricants (AREA)
  • Medicinal Preparation (AREA)
  • Colloid Chemistry (AREA)
  • Catching Or Destruction (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Plant Substances (AREA)
EP97953853A 1996-12-24 1997-12-18 Dispositif de production d'aerosol Expired - Lifetime EP0946305B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19654321A DE19654321A1 (de) 1996-12-24 1996-12-24 Vorrichtung zur Aerosolerzeugung
DE19654321 1996-12-24
PCT/EP1997/007118 WO1998028085A1 (fr) 1996-12-24 1997-12-18 Dispositif de production d'aerosol

Publications (2)

Publication Number Publication Date
EP0946305A1 true EP0946305A1 (fr) 1999-10-06
EP0946305B1 EP0946305B1 (fr) 2003-04-02

Family

ID=7816180

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97953853A Expired - Lifetime EP0946305B1 (fr) 1996-12-24 1997-12-18 Dispositif de production d'aerosol

Country Status (12)

Country Link
EP (1) EP0946305B1 (fr)
JP (1) JP3445282B2 (fr)
KR (1) KR100500084B1 (fr)
CN (1) CN1114506C (fr)
AT (1) ATE235965T1 (fr)
DE (2) DE19654321A1 (fr)
ES (1) ES2195198T3 (fr)
ID (1) ID22862A (fr)
IL (1) IL130496A0 (fr)
NO (1) NO993108L (fr)
TW (1) TW396059B (fr)
WO (2) WO1998028085A1 (fr)

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DE19856169A1 (de) * 1998-12-05 2000-06-29 Deutsch Zentr Luft & Raumfahrt Verfahren und Vorrichtung zum Zerstäuben eines flüssigen Mediums
DE19917219B4 (de) * 1999-04-16 2005-06-16 Unilube Ag Schmiervorrichtung
IT1309484B1 (it) * 1999-04-29 2002-01-23 Genio Migliorati Ugello micronizzatore di acqua ad impatto, per abbattimento polveri.
JP2001141182A (ja) * 1999-11-18 2001-05-25 Fuoogeru Japan Kk 噴霧給油装置
DE10164735C2 (de) * 2001-01-31 2003-05-15 Vogel Willi Ag Verfahren zur Aerosolerzeugung
DE10129243C2 (de) * 2001-06-18 2003-12-04 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Dosierung fluider Medien
DE10218896A1 (de) 2002-04-26 2003-11-06 Vogel Willi Ag Vorrichtung zur Erzeugung eines Aerosols
DE10345130A1 (de) * 2003-09-26 2005-04-21 Vogel Willi Ag Vorrichtung und Verfahren zur Aerosolschmierung unter Verwendung eines Bypass-Ventils
CN1321767C (zh) * 2004-11-11 2007-06-20 华南理工大学 使润滑物质均匀分布在固体粉末表面的方法及其装置
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FR2901157B1 (fr) 2006-05-19 2008-07-25 Otv Sa Injecteur de reactif destine a equiper un reacteur de traitement d'eau, comprenant une buse associee a un organe de dispersion, et dispositif de traitement d'eau correspondant
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AT508319A1 (de) * 2009-05-20 2010-12-15 Mittermayr Alexander Verfahren zur aromabehandlung eines in einer verpackung vorgesehenen lebensmittels
DE102011102539A1 (de) * 2011-05-26 2012-11-29 Linde Aktiengesellschaft Aerosol-Schmiervorrichtung, Schmieranordnung und Schmierverfahren
AT512219B1 (de) * 2011-12-02 2016-06-15 Braincon Handels-Gmbh Zerstäubungsvorrichtung
US9162245B1 (en) * 2012-03-29 2015-10-20 BTD Wood Powder Coating, Inc. Powder coating conveyor support
DE102013006331A1 (de) * 2013-04-12 2014-10-16 Technotrans Ag Werkstückbeöler und Verfahren zum Beölen von Werkstücken
CN106256447B (zh) * 2015-12-10 2018-09-21 耘创九州智能装备有限公司 字符选择气控装置以及字符选择的气控方法
CN105499047A (zh) * 2016-01-22 2016-04-20 苏州市计量测试研究所 一种新型气溶胶雾化装置
DE102017103047A1 (de) * 2016-11-29 2018-05-30 Aixtron Se Aerosolverdampfer
DE102017209068A1 (de) * 2017-05-30 2018-12-06 Bielomatik Leuze Gmbh + Co. Kg Aerosolvorrichtung und Verfahren zum Bereitstellen eines Aerosols
CN110496724B (zh) * 2019-09-29 2021-06-11 业成科技（成都）有限公司 点胶设备及点胶方法
WO2021069080A1 (fr) * 2019-10-11 2021-04-15 Kraussmaffei Technologies Gmbh Dispositif de mélange lubrifié pour matières plastiques de réaction
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Also Published As

Publication number Publication date
WO1998028086A1 (fr) 1998-07-02
EP0946305B1 (fr) 2003-04-02
ID22862A (id) 1999-12-16
NO993108L (no) 1999-07-09
JP2001502970A (ja) 2001-03-06
CN1241955A (zh) 2000-01-19
WO1998028085A1 (fr) 1998-07-02
ES2195198T3 (es) 2003-12-01
IL130496A0 (en) 2000-06-01
CN1114506C (zh) 2003-07-16
KR20000062335A (ko) 2000-10-25
NO993108D0 (no) 1999-06-22
DE59709723D1 (de) 2003-05-08
KR100500084B1 (ko) 2005-07-12
DE19654321A1 (de) 1998-06-25
ATE235965T1 (de) 2003-04-15
JP3445282B2 (ja) 2003-09-08
TW396059B (en) 2000-07-01

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