EP3784410A1 - Verfahren und vorrichtung zum zerstäuben einer höher viskosen, insbesondere hochviskosen flüssigkeit - Google Patents
Verfahren und vorrichtung zum zerstäuben einer höher viskosen, insbesondere hochviskosen flüssigkeitInfo
- Publication number
- EP3784410A1 EP3784410A1 EP19714133.6A EP19714133A EP3784410A1 EP 3784410 A1 EP3784410 A1 EP 3784410A1 EP 19714133 A EP19714133 A EP 19714133A EP 3784410 A1 EP3784410 A1 EP 3784410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- mixing chamber
- highly viscous
- carrier medium
- atomized
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- 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
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids
-
- 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
- B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
- B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
- B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
- B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the 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
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0623—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn
- B05B17/063—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers coupled with a vibrating horn having an internal channel for supplying the liquid or other fluent material
-
- 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
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0433—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of gas surrounded by an external conduit of liquid upstream the mixing chamber
-
- 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
- B05B7/16—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 incorporating means for heating or cooling the material to be sprayed
- B05B7/166—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 incorporating means for heating or cooling the material to be sprayed the material to be sprayed being heated in a container
-
- 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
- B05B7/16—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 incorporating means for heating or cooling the material to be sprayed
- B05B7/168—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 incorporating means for heating or cooling the material to be sprayed with means for heating or cooling after mixing
-
- 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
- B05B7/16—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 incorporating means for heating or cooling the material to be sprayed
- B05B7/1693—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 incorporating means for heating or cooling the material to be sprayed with means for heating the material to be sprayed or an atomizing fluid in a supply hose or the like
Definitions
- the invention relates to a method for atomising a highly viscous, especially highly viscous liquid having the features of the preamble of claim 1. Furthermore, the invention relates to a device for carrying out the method according to the invention.
- a more viscous liquid is understood as meaning a liquid whose viscosity is greater than 100 mPas at a temperature of 20 ° C.
- a highly viscous liquid is understood as meaning a liquid whose viscosity is greater than 1000 mPas at a temperature of 20 ° C.
- the liquid may be an adhesive, a silicone oil or a thick-film paint.
- the present invention is therefore based on the object of simplifying the atomization of higher-viscosity, in particular high-viscosity liquids.
- the aim is to Viscous, especially highly viscous liquid are decomposed into very small drops, so that very fine layers of the liquid can be produced.
- Proposed is a method for atomising a highly viscous, especially highly viscous liquid by means of a pressurized gaseous or liquid carrier medium, which is discharged using a spray device.
- the liquid to be atomized is fed to a mixing chamber of the spray device, through which the pressurized carrier medium is passed during discharge, so that the liquid to be atomized is entrained by the carrier medium.
- the highly viscous, especially highly viscous liquid is disassembled during discharge through the spray device in the smallest drops, so that extremely thin layers of the liquid can be produced.
- the carrier medium is adjusted to the respective higher-viscous, especially highly viscous liquid. If, for example, the liquid is a water-based sealing layer varnish, water can be used as a carrier medium. The same applies if the liquid is a water-dilutable silicone oil. Otherwise, a solvent can also be used as the carrier medium.
- the carrier medium can be both a liquid and a gas. It is important that the carrier medium is pressurized, preferably subjected to high pressure, in order to introduce the pulse required for atomising the higher-viscosity, in particular highly viscous liquid.
- Flochtik has the advantage that a correspondingly strong pulse can be introduced, so that the atomization of the more viscous, especially highly viscous liquid is further optimized.
- a needle valve with a nozzle and a nozzle-side mounted adapter is used as a spray device.
- the adapter forms the mixing chamber out.
- Needle valves are known, for example, from fuel injection technology. By means of such needle valves, also called fuel injectors, fuels are injected under very high pressure into a combustion chamber of an internal combustion engine. The injection pressure can be 2,000 to 3,000 bar. If a needle valve known from fuel injection technology is used to carry out the method according to the invention, correspondingly high pressures can be achieved, which proves to be an advantage in the atomization of a more viscous, especially highly viscous liquid. In addition, sophisticated technology and existing components can be used so that costs can be saved.
- a carrier medium whose viscosity is well below the viscosity of the liquid to be atomized.
- a carrier medium is used whose viscosity is less than 300 mPas, more preferably less than 100 mPas at a temperature of 20 ° C.
- Carrier media whose viscosity is above can not be switched or atomized by means of a conventional fuel injector.
- the carrier medium be discharged by means of the spray device in a pulsed process. This means that several successive pulses are generated which entrain the higher-viscosity or high-viscosity liquid present in the mixing chamber. Since pulsed methods are also used in the injection of fuels, this technique can be used.
- the higher viscous, in particular highly viscous liquid to be atomized before it is fed to the mixing chamber, with pressure, preferably at high pressure, applied.
- pressure preferably at high pressure
- the higher-viscosity or highly viscous liquid can be stored in a pressure vessel and / or compressed by means of a pump, preferably by means of a high-pressure pump, before being introduced into the mixing chamber.
- a pump known from fuel injection technology in particular a high-pressure pump, can be used as the pump.
- a designed as a piston pump high-pressure pump can be used.
- the higher-viscous or highly viscous liquid to be atomized is heated by means of a heating device.
- a heating device By heating the liquid, the viscosity of the liquid can be reduced so that it can be atomized more easily.
- the liquid can be heated before entering the mixing chamber and / or in the mixing chamber.
- the further proposed device for carrying out the method according to the invention comprises a spraying device with a mixing chamber having an inlet and an outlet for a pressurized gaseous or liquid carrier medium and a connection to a fluid line, by means of which the mixing chamber stored in a fluid container Sirikose, in particular highly viscous liquid can be supplied.
- the pressurized carrier medium causes a pulse, which causes the liquid supplied to the mixing chamber is entrained and atomized during discharge. In this way, the smallest droplets can be formed, which are suitable for the production of extremely thin layers.
- the spray device comprises a needle valve with a nozzle and a nozzle-side mounted adapter for forming the mixing chamber.
- the needle valve may in particular be a needle valve known from fuel injection technology, in particular a fuel injector.
- injection pressures over 2,000 bar can be achieved, which favors the formation of very fine droplets.
- a uniform droplet distribution can be achieved.
- the needle valve Since such needle valve are usually not suitable for spraying higher viscous, especially highly viscous liquids, the needle valve on the nozzle side, an adapter forming the mixing chamber. The more viscous or highly viscous liquid is therefore not passed through the needle valve, but fed only to the downstream mixing chamber.
- the pulse required for sputtering is introduced through the pressurized carrier medium which is passed through the mixing chamber, entraining the more viscous or highly viscous liquid. This makes it possible to use known from the fuel injection needle valves for atomizing higher viscosity or highly viscous liquids.
- At least one heating device is provided for heating the higher-viscosity, in particular high-viscosity, liquid.
- the heating of the liquid leads to a reduction of the viscosity of the liquid, so that it can be atomized more easily.
- the heating device may be arranged on the mixing chamber, on the fluid line and / or on the fluid container.
- an ultrasonic transducer in particular in the form of a piezoceramic element, be provided for generating mechanical vibrations.
- the ultrasonic transducer converts electrical vibrations into mechanical ones that are transferred to the fluid and the carrier medium.
- the vibration excitation promotes the formation of very fine droplets by lowering the surface tension. As a result, an even better atomization of the higher-viscosity liquid is achieved.
- the ultrasonic transducer is preferably arranged in the region of the outlet of the mixing chamber.
- FIG. 1 shows a schematic longitudinal section through a device according to the invention according to a first preferred embodiment
- FIG. 2 shows a schematic longitudinal section through a device according to the invention according to a second preferred embodiment
- Fig. 3 is a schematic longitudinal section through an inventive device according to a third preferred embodiment.
- Fig. 4 is a schematic longitudinal section through an inventive device according to a fourth preferred embodiment.
- the device shown in FIG. 1 is used to atomise a higher viscous, especially highly viscous liquid 1 by means of a pressurized carrier medium 2. It comprises a spraying device 3 with a needle valve 5 and an adapter 7, which is used to form a mixing chamber 4 on a nozzle. 6 of the needle valve 5 is placed. In the nozzle 6, an inlet 10 is formed in the mixing chamber 4 for the support medium 2.
- the highly viscous or highly viscous liquid 1 to be atomized is supplied to the mixing chamber 4 via a fluid line 12, which connects the mixing chamber 4 to a fluid container 13, in which the liquid 1 is stored.
- the carrier medium 2 and the liquid are discharged together via an outlet 11, which is formed in the adapter 7.
- the carrier medium 2 is pressurized, in particular high pressure.
- a pump 14 which may be, for example, a high-pressure pump in the manner of a high-pressure fuel pump. If a nozzle needle 16 of the needle valve 5 releases the inlet 10 formed in the nozzle 6, the pressurized carrier medium 2 enters the mixing chamber 4, in which the highly viscous or highly viscous liquid to be atomized is obtained. place. On the way towards the outlet 11, the carrier medium 2 entrains the more viscous or highly viscous liquid, so that it is discharged together with the carrier medium 2 via the outlet 11 and finely atomized.
- FIG. 1 A further preferred embodiment of a device according to the invention is shown in FIG.
- another pump 15 for pressurizing in particular Flochdruckbeaufschlagung the higher viscosity or highly viscous liquid 1 is provided, which is connected upstream of the fluid container 13.
- the pump 15 may be analogous to the pump 14, in particular as a piston pump.
- the device according to the invention for atomising a highly viscous, especially highly viscous liquid 1 shown in FIG. 1 has Fleizvoriquesen 8, which are arranged on the fluid container 13, on the fluid line 12 and on the mixing chamber 4. Instead of several Fleizvoriquesen 8, only one Fleizvor puzzle 8 may be provided.
- the at least one Fleizvorraum 8 the higher-viscosity or highly viscous liquid 1 can be heated, whereby the viscosity of the liquid 1 is reduced. The lower the viscosity of the liquid 1, the easier it can be atomized.
- FIG. 4 shows a further preferred embodiment of a device according to the invention for atomising a highly viscous, in particular highly viscous liquid 1.
- the device additionally has an ultrasonic transducer 9, which is arranged in the region of the outlet 11 and contributes to the fact that the liquid 1 is atomized even finer.
- the ultrasonic transducer 9 may be, for example, a piezoceramic element that converts electrical vibrations into mechanical and transmits them to the liquid 1 and the carrier medium 2.
- FIGS. 1 to 4 can each be used individually or in different combinations for realizing the invention.
Landscapes
- Fuel-Injection Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018206338.9A DE102018206338A1 (de) | 2018-04-25 | 2018-04-25 | Verfahren und Vorrichtung zum Zerstäuben einer höher viskosen, insbesondere hochviskosen Flüssigkeit |
PCT/EP2019/056822 WO2019206520A1 (de) | 2018-04-25 | 2019-03-19 | Verfahren und vorrichtung zum zerstäuben einer höher viskosen, insbesondere hochviskosen flüssigkeit |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3784410A1 true EP3784410A1 (de) | 2021-03-03 |
Family
ID=65955186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19714133.6A Withdrawn EP3784410A1 (de) | 2018-04-25 | 2019-03-19 | Verfahren und vorrichtung zum zerstäuben einer höher viskosen, insbesondere hochviskosen flüssigkeit |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3784410A1 (de) |
DE (1) | DE102018206338A1 (de) |
WO (1) | WO2019206520A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114871008A (zh) * | 2022-04-24 | 2022-08-09 | 广州大学 | 一种超声雾化装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB604560A (en) * | 1945-11-27 | 1948-07-06 | Atlas Diesel Ab | Improvements in spray heads for liquid spraying appliances |
FR2758476A1 (fr) * | 1997-01-23 | 1998-07-24 | Klein Christophe Pierre Lucien | Appareil de production de mousse optimise et reglable |
US6554212B2 (en) * | 2001-02-08 | 2003-04-29 | Ipr Automation Lp | Robot spray head for cavity treatment |
JP5715357B2 (ja) * | 2010-08-20 | 2015-05-07 | 株式会社いけうち | ノズル |
-
2018
- 2018-04-25 DE DE102018206338.9A patent/DE102018206338A1/de not_active Withdrawn
-
2019
- 2019-03-19 WO PCT/EP2019/056822 patent/WO2019206520A1/de unknown
- 2019-03-19 EP EP19714133.6A patent/EP3784410A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019206520A1 (de) | 2019-10-31 |
DE102018206338A1 (de) | 2019-10-31 |
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