EP2893982A1 - Dispositif de laquage - Google Patents

Dispositif de laquage Download PDF

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Publication number
EP2893982A1
EP2893982A1 EP15151027.8A EP15151027A EP2893982A1 EP 2893982 A1 EP2893982 A1 EP 2893982A1 EP 15151027 A EP15151027 A EP 15151027A EP 2893982 A1 EP2893982 A1 EP 2893982A1
Authority
EP
European Patent Office
Prior art keywords
steam
steam line
water vapor
tempering fluid
line
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
EP15151027.8A
Other languages
German (de)
English (en)
Other versions
EP2893982B1 (fr
Inventor
Gerhard Brendel
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP2893982A1 publication Critical patent/EP2893982A1/fr
Application granted granted Critical
Publication of EP2893982B1 publication Critical patent/EP2893982B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B05B7/16—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
    • B05B7/1606—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 spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • 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
    • B05B7/1606—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 spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • B05B7/1646—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed the material to be sprayed and the atomising fluid being heated by the same source of heat, without transfer of heat between atomising fluid and material to be sprayed
    • 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
    • B05B7/2489—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 an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2491—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 an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • 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
    • B05B7/1606—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 spraying of the material involving the use of an atomising fluid, e.g. air
    • B05B7/1613—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed
    • B05B7/162—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed
    • B05B7/1626—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 spraying of the material involving the use of an atomising fluid, e.g. air comprising means for heating the atomising fluid before mixing with the material to be sprayed and heat being transferred from the atomising fluid to the material to be sprayed at the moment of mixing

Definitions

  • the present invention relates to a spray device for atomizing and spraying coating material by means of water vapor.
  • the present invention relates to a corresponding method.
  • a number of coating methods are known from the prior art, in which a substrate is provided with a coating material or paint.
  • Corresponding coating materials contain, in addition to macromolecular or macromolecule-forming film formers, pigments, fillers, additives and / or solvents or dispersants.
  • Solvents here are to be understood as meaning all liquids or liquid mixtures which are capable of dissolving the film former or film formers, such as e.g. Alcohols or water.
  • dispersant is meant liquids that do not dissolve the film former but maintain a fine, microheterogeneous distribution, e.g. Hydrocarbons or water.
  • the DE 10 2006 019 365 A1 For example, the use of superheated steam at a temperature of 200 ° C or more before. Even when using superheated steam In the start-up phase of the system, if all steam-carrying parts are not yet at operating temperature, or after longer breaks, or if long steam pipes are used, condensation may nevertheless form.
  • the DE 10 2005 029 687 A1 discloses a steam air dryer which is integrated into the spray nozzle, so that the condensation water is discharged from the spray device before mixing the water vapor with the coating material.
  • a steam dryer With the use of a steam dryer, however, excessive condensation may result in not enough condensate being drained and thus escaping through the nozzle.
  • the DE 10 2005 029 688 A1 discloses a heated steam channel in a spray head, the heating being electrical. Such a heater is insufficient because it takes place only in a short area in the spray head and water droplets that may arise on the way from the steam generator to the spray head, neither avoids nor can eliminate. In addition, the control of the required heating temperature is difficult.
  • a spray device includes a steam generator, a spray head or a spray gun for atomizing coating material and a supply device for supplying water vapor from the steam generator to the spray head or the spray gun of the spray device.
  • the supply device comprises a steam line for conducting preferably superheated steam, wherein the steam line is temperature controlled.
  • the supply device has a tempering device, which can temper the steam line over a length of at least 80%, in particular at least 90%, in particular at least 95%, of the length of the steam line.
  • a tempering device which can temper the steam line over a length of at least 80%, in particular at least 90%, in particular at least 95%, of the length of the steam line.
  • the spraying apparatus has a tempering fluid channel surrounding the steam line, through which a temperature control means for controlling the temperature of the steam line can be guided.
  • a temperature control means for controlling the temperature of the steam line can be guided.
  • the Temperierfluidkanal may be arranged coaxially with the steam line, so that a uniform annular channel is formed around the steam line and a uniform temperature over the entire length of the steam line is made possible.
  • the tempering fluid advantageously has a temperature which is equal to or higher than the temperature of the water vapor inside the inner pipe body, in particular a temperature of 100 ° C to 220 ° C or more.
  • the expense for the production of the tempering fluid is low and the condensed water vapor can be easily returned to the steam generator and is reusable.
  • the condensation is not harmful to the environment and may also be released to the environment.
  • an electric heating unit for example, a resistance heater, which in addition to a thermal insulation of the Temperierfluidkanals ensures a sufficiently high temperature of the Temperierfluids in Temperierfluidkanal.
  • the steam line and the Temperierfluidkanal can be fixed to each other by means of spacers, so that the most uniform possible flow of the temperature control is ensured by the Temperierfluidkanal.
  • the steam line and the Temperierfluidkanal are advantageously formed flexible. They may consist of a flexible material and / or of mutually movable members which are sealed against each other.
  • the supply device may further include a steam dryer, with which the steam line and / or the Temperierfluidkanal may be connected to dry the water vapor before the introduction into the steam line and / or the Temperierfluidkanal.
  • the connection with the steam dryer thus prevents condensed water from entering the steam line and being directed towards the spray gun, and too much condensed water forming in the tempering fluid channel.
  • steam dryers such as e.g. Cyclone separator, which lead for example by mechanical forces to a separation of water droplets in the steam.
  • Cyclone separator which put the water vapor in a spiral movement by appropriately arranged baffles, so that due to the centrifugal forces heavy droplets can be separated out and deposited
  • steam dryers with baffles or steel wire mesh can be used, in which condensate in the passage through the steam dryer on the baffle or tissue separates.
  • the supply device may also contain a pressure reducer, via which the steam line is connected in particular via the steam dryer with the steam generator.
  • the pressure reducer may also be a conventional, known pressure reducer, which can reliably ensure the desired pressure reduction.
  • the pressure reducer can be adjusted so that water vapor at a pressure between 15 bar and 20 bar, in particular 18 bar, as generated by the steam generator on a pressure of 2 to 5 bar is reduced, as it is used for sputtering and spraying.
  • the supply device may contain at least one connecting element, via which the water vapor from the steam generator or the steam dryer in the Temperierfluidkanal can be introduced.
  • the supply device may contain a condensate separator which is connected to the tempering fluid channel.
  • a return line from the condensate to the steam generator may be provided to re-evaporate the condensate.
  • the Temperierfluidkanal may further comprise at least one insulation surrounding the Temperierfluidkanal from the outside, to prevent heat loss and thus to reduce energy consumption.
  • the present invention further relates to a method for sputtering and spraying of coating material, wherein water vapor, while it travels through a steam line, with the aid of a tempering fluid, which flows around the steam line is tempered.
  • a spray device according to the invention as described in the preceding paragraphs, can be used.
  • the steam for atomizing the coating material is preferably tempered during its supply to the spray gun or nozzle device so that it does not substantially condensed.
  • the steam is maintained at temperatures of 100 ° C - 220 ° C or more to prevent condensation.
  • water vapor can be used as the tempering fluid. This can be dispensed with an additional provision of a tempering.
  • the present invention thus makes it possible to easily avoid the condensation of water vapor in steam-assisted spraying process without unduly increasing the effort.
  • the use of steam as the heating means is an efficient temperature.
  • This method can also be used within the fuel gun by the channel that leads the water vapor for atomization, is surrounded by another channel that leads the tempering fluid.
  • the FIG. 1 shows a spray device for coating objects, in particular substrates (not shown), can be performed with the steam-assisted painting.
  • the injection device comprises a supply device 1, a spray gun 2 with nozzle arrangement for generating a spray jet 20, and a steam generator 3.
  • the supply device 1 comprises a steam line 10 through which water vapor is conducted from the steam generator 3 to the spray gun 2.
  • the steam line 10 is surrounded by an outer Temperierfluidkanal 11, wherein the steam line 10 is coaxially received in the Temperierfluidkanal 11, so that an annular cross section 110 of the Temperierfluidkanals 11 is formed.
  • insulating material 12 is provided to prevent heat loss.
  • the steam line 10 is connected via a steam dryer 14 and a pressure reducer 13, which reduces the water vapor pressure of about 18 bar in the steam generator to about 2 to 5 bar, preferably 3 to 4 bar, connected to the steam generator 3.
  • the Temperierfluidkanal 11 is connected via an additional conduit 15 to the steam dryer 14 so that water vapor can be introduced from the steam dryer 14 in the Temperierfluidkanal 11.
  • a condensate separator 16 is additionally formed, which is connected to the tempering fluid channel 11 and recirculates separated condensate via a connecting line between Kondensatabscheider 16 and steam generator 3 to the steam generator 3.
  • the steam introduced as heating medium into the tempering fluid channel 11 (saturated steam) has a higher pressure but the same temperature as the steam (superheated steam) passed through the steam line 10, so that condensate is produced in the tempering fluid channel due to heat losses, but this condensate is constantly passing through new saturated steam is replaced.
  • the temperature maintenance in the tempering fluid channel prevents the water vapor in the steam line 10 from cooling, so that no condensate can form here.
  • the steam line 10 and the Temperierfluidkanal 11 are shown purely schematically and not in proportion to the spray gun 2 and the steam generator 3.
  • the steam line 10 and the tempering fluid channel 11 may be flexible tubes, in particular a coaxial tube.
  • FIG. 2 shows a further coating device, wherein the supply device 1 'is a combination of steam control, as shown in FIG FIG. 1 is shown, and an electric temperature is.
  • an electrical resistance heater 18 is provided between the Temperierfluidkanal 11 and the insulation 12, which additionally prevents cooling of the water vapor in the Temperierfluidkanal 11 and thus even better allows the uniform temperature of the steam line 10.
  • a steam dryer 14 and then a pressure reducer 13 are provided between the steam generator 3 and the supply devices 1, 1 'in the direction of flow of the steam.
  • the diversion of the water vapor from the line to the steam line 10 takes place in the tempering fluid channel 11 in the case of the steam dryer 14.
  • the present application provides a spray device which in a simple yet effective manner prevents the condensation of water vapor in the supply line to a nozzle assembly and in the nozzle assembly and thus ensures a uniform and high quality coating of articles.

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EP15151027.8A 2014-01-13 2015-01-13 Dispositif de laquage Not-in-force EP2893982B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014100328.4A DE102014100328A1 (de) 2014-01-13 2014-01-13 Lackiervorrichtung

Publications (2)

Publication Number Publication Date
EP2893982A1 true EP2893982A1 (fr) 2015-07-15
EP2893982B1 EP2893982B1 (fr) 2017-09-20

Family

ID=52339056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15151027.8A Not-in-force EP2893982B1 (fr) 2014-01-13 2015-01-13 Dispositif de laquage

Country Status (2)

Country Link
EP (1) EP2893982B1 (fr)
DE (1) DE102014100328A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3842153A1 (fr) * 2019-11-21 2021-06-30 Thomas Mayer Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB161738A (en) * 1920-01-29 1921-04-21 Walter George Richards Improvements in and relating to paint-spraying and the like apparatus
GB695966A (en) * 1950-08-29 1953-08-19 Wilhelm Kopperschmidt Method and apparatus for heating, melting and hot-spraying thermoplastic materials
US2785269A (en) * 1955-09-08 1957-03-12 Pantex Mfg Corp Steam superheating apparatus
DE102005029687A1 (de) 2005-06-21 2007-01-04 Krautzberger Gmbh Spritzvorrichtung und Spritzkopf
DE102005029688A1 (de) 2005-06-21 2007-02-01 Krautzberger Gmbh Spritzvorrichtung und Spritzkopf
DE102006019365A1 (de) 2006-04-21 2007-10-25 Krautzberger Gmbh Vorrichtung zum wasserdampfunterstützten Spritzen von Beschichtungsmaterial und Verfahren zum Beschichten von Substraten mit einem Beschichtungsmaterial

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1642418A (en) * 1925-10-01 1927-09-13 Kovanda Molten-material-spraying apparatus
US2670238A (en) * 1950-05-22 1954-02-23 Arco Company Valve controlled coating material heating unit
DE2410847C3 (de) * 1974-03-07 1979-12-20 Davy International Ag, 6000 Frankfurt Verwendung eines Ultraschallzerstäubers für die Zerstäubung von Schwefel
DE102004012889A1 (de) * 2004-03-16 2005-10-06 Nütro Maschinen- und Anlagenbau GmbH & Co. KG Wasserdampfunterstütztes Lackierverfahren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB161738A (en) * 1920-01-29 1921-04-21 Walter George Richards Improvements in and relating to paint-spraying and the like apparatus
GB695966A (en) * 1950-08-29 1953-08-19 Wilhelm Kopperschmidt Method and apparatus for heating, melting and hot-spraying thermoplastic materials
US2785269A (en) * 1955-09-08 1957-03-12 Pantex Mfg Corp Steam superheating apparatus
DE102005029687A1 (de) 2005-06-21 2007-01-04 Krautzberger Gmbh Spritzvorrichtung und Spritzkopf
DE102005029688A1 (de) 2005-06-21 2007-02-01 Krautzberger Gmbh Spritzvorrichtung und Spritzkopf
DE102006019365A1 (de) 2006-04-21 2007-10-25 Krautzberger Gmbh Vorrichtung zum wasserdampfunterstützten Spritzen von Beschichtungsmaterial und Verfahren zum Beschichten von Substraten mit einem Beschichtungsmaterial

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3842153A1 (fr) * 2019-11-21 2021-06-30 Thomas Mayer Système d'alimentation en gaz de peinture, installation de peinture et procédé de fonctionnement d'une installation de peinture

Also Published As

Publication number Publication date
EP2893982B1 (fr) 2017-09-20
DE102014100328A1 (de) 2015-07-16

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