EP1603683B1 - Buse de nebulisation et dispositif la comportant - Google Patents

Buse de nebulisation et dispositif la comportant Download PDF

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Publication number
EP1603683B1
EP1603683B1 EP04719461A EP04719461A EP1603683B1 EP 1603683 B1 EP1603683 B1 EP 1603683B1 EP 04719461 A EP04719461 A EP 04719461A EP 04719461 A EP04719461 A EP 04719461A EP 1603683 B1 EP1603683 B1 EP 1603683B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
conduit
liquid
air
duct
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.)
Expired - Lifetime
Application number
EP04719461A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1603683A1 (fr
Inventor
Karim Benalikhoudja
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.)
Prolitec Inc
Original Assignee
Prolitec Inc
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Filing date
Publication date
Application filed by Prolitec Inc filed Critical Prolitec Inc
Publication of EP1603683A1 publication Critical patent/EP1603683A1/fr
Application granted granted Critical
Publication of EP1603683B1 publication Critical patent/EP1603683B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • B05B7/0869—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 the liquid or other fluent material being sucked or aspirated from an outlet orifice by another fluid, e.g. a gas, coming from another outlet orifice
    • 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
    • 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

Definitions

  • the present invention relates to a nebulizing nozzle and a device having it. It applies, in particular, to liquid diffusion devices, for example to the diffusion of perfumes, liquid fuels, etc. All the technical features of the preamble of claim 1 are known from the document US 4,228,795 .
  • the first object of the present invention is to obtain fine particles of liquid dispersed in the air.
  • Nebulizing nozzles are known in which a jet of pressurized air draws, by the Venturi effect, a liquid to be sprayed and produces a diffusion of this liquid in the form of liquid particles.
  • Each of these nozzles is made by machining one or more metal parts constituting the body of the nozzle.
  • These nozzles have manufacturing dispersions such that the orientation of the flow of nebulized liquid particles and the diffusion angle of the nebulized liquid particles are not identical for the different nozzles.
  • the flow out of the nozzle there is a significant proportion of large particles requiring the presence of specific means of trapping them.
  • the only adjustable parameter with such nozzles is the air pressure injected into the nozzle.
  • the present invention aims to remedy these disadvantages.
  • the present invention aims, in a first aspect, a nebulizing nozzle according to claim 1.
  • the adjusting means is adapted to adjust at least the longitudinal position of the liquid inlet nozzle, along the axis of the liquid supply duct.
  • the liquid inlet nozzle does not have symmetry of revolution, with respect to the axis of the liquid supply duct and the means of is adapted to adjust at least the angular position of the liquid supply duct. liquid inlet nozzle, with respect to the axis of the liquid supply duct.
  • the rotation of this conduit makes it possible to vary the operation of the nozzle, the efficiency of the nozzle and the size of the nebulized particles.
  • the nozzle comprises a free air inlet duct having a nozzle in the nebulization zone and an open air opening.
  • the amount of air to be injected is reduced and the operation of the nozzle is thus more economical.
  • the inventor has discovered that, in addition to the air injected through the nozzle of the air intake duct, air coming from the free air intake duct participated in the nebulization of the liquid. or at least, significantly increased the flow rate of the nebulisate.
  • the nozzle object of the present invention can therefore operate with a small compressor, small power consumption and providing a small flow of air under pressure, this air flow being completed by the additional air flow from the duct. free air arrival.
  • the nozzle has a conical flare downstream of the nebulization zone.
  • the flow of nebulized liquid particles is dispersed in the conical nozzle.
  • the present invention also relates to a nebulizing device comprising a nozzle as succinctly exposed above.
  • the nozzle comprises an air suction duct having a nozzle in the nebulization zone and the device comprises, at another opening of the air suction duct, a vacuum sensor and a means of processing a signal from said sensor and representative of the depression inside the suction duct.
  • the vacuum sensor completely closes the air suction duct, but alternatively the shutter can be only partial, the body of the pressure sensor creating then in this case a more or less significant pressure drop.
  • the vacuum sensor makes it possible to determine the absence of liquid at the nozzle of the liquid supply duct which is in the nebulization zone. Indeed, the inventor has discovered that, when there is no more liquid in this nozzle, the value of the depression sensed by the sensor is different from the depression value when said nozzle contains liquid to be sprayed. It is observed that the air intake duct and the air inlet duct briefly exposed above can be confused.
  • the signal processing means can then generate an alarm, sound, visual or transmitted remotely on wired or non-wired support and / or cause the power supply to stop an air compressor supplying air under pressure. to the nozzle.
  • the liquid suction duct further includes an opening in the open air.
  • the liquid suction pipe has the advantages of the free air inlet pipe succinctly exposed above, the amount of air to be injected is reduced and the operation of the nozzle is thus more economical.
  • a nozzle 61 to 64 each comprising a nozzle body, an air inlet duct 10, a nebulizing liquid supply duct 20, a zone of nebulization 30 in which are located a nozzle 15 of the air intake duct 10 and a nozzle 25 of the liquid supply duct 20, a free air duct 40 having a nozzle 45 in the nebulization zone 30, the nebulization zone being formed in the nozzle body and the various conduits penetrating into said body, more precisely said said said being engaged in holes made in the nozzle body, an appropriate seal being between the cylindrical outer faces of the ducts and the cylindrical faces of the corresponding bores.
  • the conduit 20 enters the nebulization zone 30 which is formed by a cylindrical chamber. It can be seen that the conduit 20 may be formed of a container portion and a contained portion mounted in the container portion in a tight or slightly tight fit, the nozzle 25 being formed at the end of the contained portion. The type of adjustment may allow the portion contained in the containing portion to slide or to prohibit it.
  • the nozzle 45 is in a geometrical plane perpendicular to the longitudinal axis of the duct 40 and that the nozzle 15 is disposed in a geometrical plane perpendicular to the longitudinal axis of the duct 10.
  • the longitudinal axes of the ducts 10,20 and 40 are secant, to each other, that the longitudinal axis of the duct 10 is perpendicular to the longitudinal axes of the ducts 40 and 20.
  • the ducts 40 and 20 are axially aligned .
  • the air intake duct 10 is connected to a compressor ( figure 9 ) which supplies it with pressurized air, for example between one and ten times the atmospheric pressure.
  • the liquid supply duct 19 to be nebulized is connected at one end to a reservoir of liquid to be sprayed ( figures 6 , 7 and 9 ).
  • the nozzle 15 of the air inlet duct 10 and the nozzle 25 of the liquid supply duct 20 are positioned respectively so that, by the Venturi effect, the liquid is sucked into the zone of nebulization 30 where the flow of air leaving the nozzle 15 causes the generation of a stream of nebulized liquid particles, directed to an outlet 50 of the nebulizing zone 30, in a known manner.
  • the nozzle 61 to 64 comprises a means 70 for adjusting the position of the nozzle 25 of the liquid supply duct 20.
  • the adjustment can be made by longitudinal sliding and / or rotation of the liquid supply duct 20 to the nozzle 61 to 64.
  • the liquid supply duct may have a threaded section and the drilling of the nozzle body for receiving said duct will be threaded, the thread of the duct cooperating in this case with the thread of the duct. drilling.
  • the axial displacement of the duct is inseparable from its rotation.
  • the liquid suction duct 20 and the corresponding bore are smooth which allows longitudinal adjustment of the duct independently of its rotational fit.
  • the adjustment of the position of the nozzle 25, by use of the adjustment means 70, makes it possible to vary the operating parameters of the nozzle 61 to 64, to compensate, at least partially, the manufacturing dispersions and to adapt the flow of nebulized liquid particles with each use.
  • the nozzles 15 and 25 touch each other, to the thickness near the duct 25.
  • the nozzle 25 is remote from the nozzle 15 by a distance of the same order of magnitude as the diameter of the nozzle 25, that is to say between half and three times this diameter.
  • figure 3 we observe the same elements as figure 2 , to which is added a conical flare 75 extending axially the nebulization zone 30.
  • figure 4 we observe the same elements as in the figure 3 , to which is added an extension of the conical flare 75 in the form of a cylindrical chamber 80 acting as a diaphragm, that is to say laterally retaining the flow of nebulized liquid particles.
  • the larger particles which are generally located in the lateral portions of this flow, are deposited on the cylindrical lateral surface of the chamber 80 and flow under the effect of gravity, to be recovered either in the nebulization zone , either in the liquid tank to be sprayed (see Figures 6 to 8 ).
  • the nozzles 25 and 45 are arranged in parallel geometrical planes, and that the nozzle 25 is in a geometrical plane perpendicular to the longitudinal axis of the conduit 20, while in the figure 4 it can be seen that the liquid inlet nozzle 25 does not have symmetry of revolution, with respect to the axis of the liquid supply duct: the plane of the nozzle 25 has, compared to the longitudinal axis of the conduit 25, an angle different from 90 degrees. In variants, the absence of symmetry of revolution results in a non-circular shape of the conduit 20.
  • the adjustment means 70 is adapted to adjust at least the angular position of the liquid inlet nozzle 25, with respect to the axis of the liquid supply duct 20. The rotation of this duct 20 makes it possible to vary the operation of the nozzle 64.
  • the adjusting means 70 of the position of the nozzle 25 further allows adjustment of the distance between this nozzle 25 and the nozzle 15 along the nozzle.
  • FIG. 5 which does not represent the invention, a nozzle 65 having an air inlet duct 10, a cylindrical duct 85 for supplying liquid to be sprayed on one side and free air supply on the other side, a nebulization zone 30 in which there is a nozzle 15 of the duct 10 and two openings 86 and 87 of the duct 85.
  • the duct 85 is adapted to slide in a cylindrical bore made in the body of the nozzle 65.
  • the adjustment means 70 consisting of drilling, makes it possible to slide the conduit 85 both in rotation relative to its axis and in translation along its axis, which makes it possible to vary the position of the openings 86 and 87 with respect to the nozzle 15 and constitutes
  • the conduit 85 has at one of its ends an opening in the open air and at the other end an opening in a liquid reservoir. nebulized.
  • the openings 86 and 87 are circular and have diameters substantially equal to the diameter of the nozzle 15. They are placed symmetrically with respect to the longitudinal axis of the conduit 85. They are therefore diametrically opposed.
  • a nebulizing liquid reservoir 100 a nebulizing liquid supply duct 120 consisting of a hollow rod 121 immersed in the liquid contained in the reservoir 100 and a secondary duct 122 inserted into a nozzle 160, said duct secondary nozzle being in communication relationship with the conduit 120.
  • the nozzle 160 rests on the rim of the container via a centering flange 161 independent or rooted to the nozzle body.
  • a tamperproof ring 162 is positioned around the upper part of the container and comes through a locking collar 163, which it has in the upper part, bearing against the centering flange 161. This tamperproof ring 162 is fixed in a manner unmountable on the upper part of the container.
  • the nozzle 160 is covered with a cap 164 in which an air intake duct 110a and an outlet duct of the nebulizer 195 are formed.
  • the air inlet duct 110a is advantageously extended by a nozzle 110b for sealing connection to a pressurized air source, for example the compressed air outlet of a compressor.
  • This connecting end 110b may be vertical as shown and extend either downwards or upwards but said end piece may also occupy a horizontal position.
  • the cap 164 is fixed to the centering flange 161 by screws and comes to overlap the locking flange 163 which the tamperproof ring 162 presents.
  • Each of the screws is engaged in a through bore of the flange 161 and in a blind tapping. practiced in the cap 164. Due to this arrangement the screw heads are in the internal volume of the tank or facing the latter and therefore are inaccessible. Thus, after attachment of the tamperproof ring 162 on the container, it will no longer be possible to disassemble the nozzle, without destruction of the ring, and to access the contents of the container.
  • This device can then be disposable and disposable after depletion of the liquid contained in the reservoir.
  • the various conduits accessible from the outside of the device may be equipped with securing means such as check valves and other.
  • the nozzle 160 comprises an air inlet duct 110 in communication relation with the duct 110a formed in the cap, the secondary duct 122, a nebulization zone 130 in which there is a nozzle 115 of the inlet duct. air 110 and a nozzle 125 of the liquid supply duct 120, an outlet 150 of the nebulization zone 130, a setting means 170 of the position of the secondary duct 122, a conical flare 175 extending the outlet 150 of the zone of nebulization and a cylindrical chamber 180 extending the conical flare.
  • the adjustment means 170 consists of a micrometric pitch screw.
  • the nozzle 160 may furthermore have a free air duct 140 having a nozzle 145 in the nebulization zone 130. This free air duct will be in communication relation with a through duct 140a made in the cap.
  • the nebulizing liquid conduit 121 comprises at the bottom end a filter 121a. This filter dips into the liquid in the tank.
  • the nozzle 115 of the air intake duct 110 and the nozzle 125 of the liquid supply duct 120 are positioned respectively so that, by the Venturi effect, the liquid is sucked into the zone of nebulization 130 where the air flow leaving the nozzle 115 causes the generation of a stream of nebulized liquid particles, directed to the outlet 150 of the nebulizing zone 130, in a known manner.
  • the suction duct sucks air into the chamber 180, part of the flow from the nozzle is reinjected into the nebulization zone, which makes it possible to increase the concentration of nebulized liquid particles. in the stream leaving the chamber 180.
  • the largest nebulized liquid particles are deposited, by gravity effect or because of their inertia, in the tank 100 where they join the liquid to be sprayed.
  • the exhaust opening 190 is directed towards the surface of the liquid contained in the reservoir.
  • a nebulizing device 200 comprising the reservoir 100 and the nozzle 160, a compressor 210, a power supply 220 of the compressor 210, a pressure sensor 230, a processing means 240, an alarm signal generator 250, a sound transmitter 260, a light 270 and a computer network 280.
  • the pressure sensor 230 is positioned on the opening 142 of the duct 140 and emits a signal representative of the pressure (or depression) in the lateral parts of the nebulization zone 130.
  • the processing means 240 for example a card electronic (possibly microprocessor), a computer or a threshold circuit, receives the signal emitted by the pressure sensor 230 and, according to predetermined variation criteria of this signal, causes the generation of alarm signals by the generator of alarm signals 250, to the sound transmitter 260, the indicator 270 and / or the computer network 280.
  • the inventor has, in fact, discovered that when there is no more liquid in the nozzle 125, the value of the depression sensed by the pressure sensor 230 is different from the depression value when said nozzle contains liquid to be sprayed.
  • the value of the measured pressure is, when there is no more liquid in the nozzle 125, less than it is when there is still liquid to be sprayed in the nozzle 125.
  • the processing means is also adapted, when it has detected that there is no more liquid to be sprayed, to stop the power supply of the compressor 210.
  • an air compressor is started to cause suction of liquid to be sprayed into a tank.
  • a step 320 of injection into a nebulization zone and a step 330 of projection of the nebulized liquid particles from the nebulization zone into said reservoir are then carried out.
  • Part of the nebulized liquid particles then leave the reservoir through a release opening, during a step 340.
  • step 360 part of the air in the tank is sucked into a free air duct, step 350, and injected into the nebulization zone, step 360.
  • a measurement step 370 of the pressure in the nebulization zone and a processing step 380 of said measurement are carried out.
  • the pressure is measured in a suction duct having a nozzle in the nebulization zone and optionally an opening in the open air, for example in the tank.
  • the operation of the air compressor is stopped or an alarm signal is generated, when the measurement of the pressure satisfies predetermined variation criteria, as explained with reference to FIG. figure 9 .
  • the figure 11 represents a circular piece or diaphragm 196 having three lateral openings 197 which can be inserted into the exhaust opening 190 preferably in a shoulder that this opening has a terminal portion, namely at the opposite of the nebulizing chamber (see figure 6 ).
  • This circular piece has the function of retaining the largest nebulized liquid particles so that they form large drops, compared to the nebulized liquid particles, which fall, under the effect of gravity, into the reservoir 100 This avoids this form an emulsion which may cause an oxidation of the liquid to be sprayed.
  • FIG. 12 a variant 26 of shape of the nozzle 25.
  • the opening of the nozzle 25 has a non-planar shape, is formed by the intersection of the cylinder of the liquid supply conduit 70 and a cylinder surrounding the nozzle of the pressurized air supply duct 10, whose axis is the air supply duct under pressure.
  • This particular form 26 allows a good efficiency of the nebulization nozzle 61 to 64.
  • Any other shape may be provided, for example a triangular shape.
  • the device as described will advantageously be arranged in a compartmentalized protective case as represented in FIG. Figures 13 and 14 .
  • this box has a shutter door with lock.
  • One of the compartments of the box will be provided to receive the device according to the invention and one of the other compartments will be provided to receive the compressed air compressor.
  • the compressed air outlet of the compressor will be connected by a flexible or rigid pipe to a female endpiece fixed in the first compartment and adapted to receive the female end of the cap of the nebulizing device.
  • Another compartment will be provided to receive the electronics of the device.
  • the latter is equipped with a locking lever for pivotally cooperating with two anchoring studs fixed in the first compartment.

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EP04719461A 2003-03-11 2004-03-11 Buse de nebulisation et dispositif la comportant Expired - Lifetime EP1603683B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0303203 2003-03-11
FR0303203A FR2852261B1 (fr) 2003-03-11 2003-03-11 Buse de nebulisation et dispositif la comportant
PCT/EP2004/050294 WO2004080605A1 (fr) 2003-03-11 2004-03-11 Buse de nebulisation et dispositif la comportant

Publications (2)

Publication Number Publication Date
EP1603683A1 EP1603683A1 (fr) 2005-12-14
EP1603683B1 true EP1603683B1 (fr) 2010-02-10

Family

ID=32893320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04719461A Expired - Lifetime EP1603683B1 (fr) 2003-03-11 2004-03-11 Buse de nebulisation et dispositif la comportant

Country Status (17)

Country Link
US (1) US20060219814A1 (ja)
EP (1) EP1603683B1 (ja)
JP (1) JP4664279B2 (ja)
KR (1) KR100740924B1 (ja)
CN (1) CN100450634C (ja)
AT (1) ATE457203T1 (ja)
AU (1) AU2004218942B2 (ja)
BR (1) BRPI0408277B1 (ja)
CA (1) CA2518244C (ja)
DE (1) DE602004025453D1 (ja)
ES (1) ES2344983T3 (ja)
FR (1) FR2852261B1 (ja)
MX (1) MXPA05009812A (ja)
NZ (1) NZ574273A (ja)
RU (1) RU2348465C2 (ja)
TN (1) TNSN05217A1 (ja)
WO (1) WO2004080605A1 (ja)

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US9162004B1 (en) 2014-04-22 2015-10-20 Prolitec Inc. Removable cartridge for liquid diffusion device and cartridge insert thereof
US9486552B1 (en) 2015-10-20 2016-11-08 Prolitec Inc. Air treatment appliance
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CN109702653A (zh) * 2017-10-26 2019-05-03 富鼎电子科技(嘉善)有限公司 抛光液供给装置
CN108080167A (zh) * 2018-01-30 2018-05-29 广州大学 一种凸起扰流雾化装置
CN110359391B (zh) * 2019-06-14 2021-07-13 湖州欣盾智能机械有限公司 一种磁感应式降尘隔离墩
CN111530650B (zh) * 2020-05-13 2024-08-13 张双喜 一种喷嘴结构、储液罐和气泵
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Also Published As

Publication number Publication date
FR2852261B1 (fr) 2006-06-30
JP4664279B2 (ja) 2011-04-06
AU2004218942A1 (en) 2004-09-23
WO2004080605A1 (fr) 2004-09-23
ATE457203T1 (de) 2010-02-15
TNSN05217A1 (fr) 2007-06-11
NZ574273A (en) 2010-04-30
KR100740924B1 (ko) 2007-07-19
KR20050114233A (ko) 2005-12-05
CN100450634C (zh) 2009-01-14
MXPA05009812A (es) 2006-05-31
CA2518244C (fr) 2010-06-01
EP1603683A1 (fr) 2005-12-14
CN1777480A (zh) 2006-05-24
FR2852261A1 (fr) 2004-09-17
RU2005131428A (ru) 2006-06-27
BRPI0408277A (pt) 2006-03-07
DE602004025453D1 (de) 2010-03-25
RU2348465C2 (ru) 2009-03-10
ES2344983T3 (es) 2010-09-13
AU2004218942B2 (en) 2008-07-17
US20060219814A1 (en) 2006-10-05
JP2006519691A (ja) 2006-08-31
BRPI0408277B1 (pt) 2014-04-29
CA2518244A1 (fr) 2004-09-23

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