EP3401019A1 - Dispositif d'humidification d'air comprimé - Google Patents

Dispositif d'humidification d'air comprimé Download PDF

Info

Publication number: EP3401019A1
Authority: EP; European Patent Office
Prior art keywords: water; air; compressed air; container; water bath
Prior art date: 2017-05-09
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

EP18155834.7A

Other languages

German (de)

English (en)

Other versions

EP3401019B1 (fr

Inventor

Herbert Hauptkorn

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.)

Individual

Original Assignee

Individual

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.)

2017-05-09

Filing date

2018-02-08

Publication date

2018-11-14

2018-02-08 Application filed by Individual filed Critical Individual

2018-11-14 Publication of EP3401019A1 publication Critical patent/EP3401019A1/fr

2020-03-25 Application granted granted Critical

2020-03-25 Publication of EP3401019B1 publication Critical patent/EP3401019B1/fr

Status Active legal-status Critical Current

2038-02-08 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
- B05B7/24—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
- B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
- B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
- B05B7/2416—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle 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
- B05B7/24—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

Definitions

the invention relates to a device for humidifying compressed air, in particular for an application device for water-based paint.
Devices for air treatment in particular from the field of paint systems for water-based paints, are known from the state of the art, which are designed to create suitable ambient atmospheric conditions for the painting process. For this purpose, for example, is known to set a predetermined relative humidity in a room or a cabin in which the paint shop is.
the water-based paint is typically applied by means of an application device.
Such application devices can be designed, for example, as a rotary atomizer or spray gun.
a device for humidifying compressed air in particular for a compressed air-assisted application device for water-based paint comprises a partially filled with water, pressure-resistant container with an air inlet and an air outlet for compressed air.
the air inlet is arranged below the water level of the water bath contained in the pressure-resistant container and the air outlet above the water level of the water bath contained in the pressure-resistant container.
the invention is based on the observation that when spraying water-based paint under high pressure a lot of moisture is released into the ambient air and thus overspray. This loss of moisture on the one hand leads to the fact that the crosslinking and film closure of the water paint on the component to be painted is no longer satisfactorily, on the other hand increased material consumption is caused, in particular a frequent cleaning of the ambient air of Lackier Scheme filtering filter systems and thus increased production costs ,
the pressurized air supplied application device for atomizing the water paint supplied compressed air is usually very dry, since the moisture originally contained in the air is removed by compression and refrigeration. It has been shown that this dry compressed air further draws water from the water paint. In the context of the invention is therefore proposed to operate the application device with humidified compressed air.
Air-assisted application devices for water-based paint are in particular those devices which are suitable for atomizing the water-based paint under the influence of compressed air.
Compressed air-assisted application devices can be operated in particular by compressed air and include, for example, rotary atomizers, disc atomizers, bell atomizers and / or one or more atomizer nozzles.
the moistening of the intended for atomization of the water paint compressed air is carried out by introducing the dry compressed air, which is provided for example in a conventional manner by a compressor, via the air inlet below the water level in the partially filled with water container. Since the air outlet is above the water level, the supplied compressed air flow must flow through the water bath and absorbs moisture. The drying out of water-based paint components, which come indirectly or directly into contact with the compressed air flow during the painting process, is thus at least counteracted.
humidified compressed air when using the application device, a better atomization of the water-based paint can be achieved. This is particularly advantageous when painting wooden parts, as the water-based paint can penetrate better into pores. Job differences due to different surfaces to be painted, as they are present for example in wooden windows, ideally occur at best reduced. In general, the painting result is improved both qualitatively and visually. In addition, mist (overspray) can be attached by moistening, as moist air falls to the ground. The humidified compressed air at least partially compensates for water loss, thus ensuring better crosslinking of the water-based paint.
the water bath contained in the pressure-resistant container can preferably be heated by means of a heating device.
the temperature of the supplied compressed air can thus be adapted and in particular increased when flowing through the water bath. Air at elevated temperature has i. A. have a greater capacity to absorb water vapor or moisture.
Air at elevated temperature has i. A. have a greater capacity to absorb water vapor or moisture.
it is advantageous to moisten the compressed-air flow since this can reduce the proportion of the spray that escapes into the environment (overspray).
the water-based paint cools during sputtering due to the Adiabatic evaporative cooling, so that the surface of the painted component has a relation to the ambient air significantly reduced temperature.
the temperature and humidity of the ambient air is typically specified in paint systems by supply air systems. In the painting area, in particular within a paint booth, controlled atmospheric environmental conditions are created that favor the painting process.
the ambient air is typically in the range of room temperature and has an increased moisture content.
the large temperature difference between the component and the ambient air caused by evaporative cooling has a negative effect on the quality of the lacquer coating, in particular this leads to water and / or air inclusions or to a reduced adhesion of the applied lacquer. By heating the compressed air flow supplied to the application device, these effects can be counteracted.
the temperature of the water bath contained in the pressure-resistant container is preferably measurable by means of a temperature sensor.
the temperature sensor and the heating device are in operative connection with a control device such that the temperature of the water bath can be controlled.
the temperature of the water bath is in particular controllable such that it always remains within a presettable tolerance range.
control of the moisture content and / or the temperature of the compressed air takes place in that a control unit adjusts a throttle regulator arranged on the air inlet and / or the heating device accordingly in accordance with an actual setpoint adjustment.
the air outlet is preferably followed by a Tropfenabscheide nie. This ensures that condensing water can be separated from the pressure-tight container leaving the compressed air flow.
the air outlet downstream of an air heating unit is preferably modeled after the droplet separation unit and serves, on the one hand, to supply the application device with a compressed air flow having a predeterminable temperature.
the subsequent further heated compressed air flow can absorb a larger amount of moisture, so that the application device is provided a largely freed of condensate compressed air flow.
the dry compressed air which can be supplied via a connection, can be made available to an application device via a connecting piece, bypassing the water bath contained in the container.
a connecting piece bypassing the water bath contained in the container.
the invention further relates to a painting device for water-based paint, which comprises the device described above and the air-assisted application device for water-based paint.
the application device is connected to the device for compressed air-assisted atomization of the water-based paint.
FIG. 1 shows a device 1 for humidifying compressed air with a pressure-resistant container 2, which contains a water bath.
the level can be detected by means of water level sensors 3, 4.
the temperature of the water bath can be measured by means of a temperature sensor 5.
Water can be introduced via a water inlet 6 into the container 2.
the water inlet is check-protected via a valve 7, which is designed in particular as a solenoid valve.
a heating device 8 is further arranged, which is adapted to heat the water bath within the container 2 to a predeterminable temperature.
An air inlet 9 for compressed air is arranged at the bottom of the pressure-tight container 2, so that injected compressed air rises through the water bath and thereby absorbs moisture.
An air outlet 10, via which the humidified compressed air leaves the container 2, is arranged on the ceiling of the container 2.
the droplet separation unit 11 is further downstream of a distributor piece 12, which is connected via a connecting piece 13 with another distributor piece 15.
the further distributor piece 15 has a connection 16 for supplying dry compressed air.
the flow cross section of the connecting piece 13 can be changed via a fitting 14.
the fitting 14 is executed in possible embodiments as a shut-off valve or as a ball valve, so that a flow through the connector 13 can be completely interrupted.
a compressor for supplying dry compressed air can be connected to the connection 16.
the pipe connection between the further distributor piece 15 and the air inlet 9 can be shut off via a further fitting 17, in particular designed as a stopcock.
a throttle controller 18 Via a throttle controller 18, the size of the air inlet 9 supplied compressed air flow is further variable.
the distributor 14 is further fluidly connected to a further connection 19 for a compressed air-assisted application device 100.
an air heating unit 20 is arranged, which is designed to heat the flowing compressed air flow to a predetermined temperature.
the application device 100 During operation of the application device 100, it is supplied with humidified compressed air. Dry compressed air is fed via the port 16 in the device 1. For this purpose, the valve 14 is to close in the connector 13 and the other valve 15 to open. The supplied via the terminal 16 dry compressed air flows through the contained in the pressure-resistant container 2 water bath before it is delivered to the application device 100. As it flows through the water bath, the compressed air absorbs moisture. The water bath is optionally heated by means of the heating device 8, so that the compressed air is also heated when flowing through the water bath. The throughput in the container 2 or the volume flow is preferably less than 1m 3 per second.
the compressed air for the intended application of the aqueous paint application device 100 is preferably processed according to the ambient conditions and therefore also has in the example mentioned case a temperature of about 22 ° C and a relative humidity of about 80%.
the temperature of the supplied compressed air is predetermined via the temperature of the water bath and via the air heating unit 20.
the air heating unit 20 is in particular intended to counteract the condensation of water droplets which may occur upon cooling of the moisture-saturated compressed air stream.
the fitting 14 is opened in the connecting piece 13 and the other valve 15 is closed.
the fluid connection to the application device 100 in particular a hose arranged between the connection 19 and the application device 100, is rinsed with dry compressed air, which is supplied via the connection 16, so that no moist air remains in this region. This ensures in particular that no condensation forms in this area, which could adversely affect the painting result when carrying out a further painting process.

Landscapes

Nozzles (AREA)
Details Or Accessories Of Spraying Plant Or Apparatus (AREA)

EP18155834.7A 2017-05-09 2018-02-08 Dispositif d'humidification d'air comprimé Active EP3401019B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE102017109932.8A DE102017109932A1 (de)	2017-05-09	2017-05-09	Vorrichtung zur Befeuchtung von Druckluft

Publications (2)

Publication Number	Publication Date
EP3401019A1 true EP3401019A1 (fr)	2018-11-14
EP3401019B1 EP3401019B1 (fr)	2020-03-25

Family

ID=61188713

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP18155834.7A Active EP3401019B1 (fr)	2017-05-09	2018-02-08	Dispositif d'humidification d'air comprimé

Country Status (2)

Country	Link
EP (1)	EP3401019B1 (fr)
DE (1)	DE102017109932A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102020109042A1 (de) *	2019-11-21	2021-05-27	Thomas Mayer	Lackiergas-Zuleitungssystem, Anlage zum Lackieren und Verfahren zum Betrieb einer Anlage zum Lackieren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE8434355U1 (de) *	1984-11-23	1985-02-21	Sata-Farbspritztechnik GmbH, 7140 Ludwigsburg	Vorrichtung zum reinigen von druckluft
DE3518041A1 (de) *	1985-05-20	1986-11-20	Helmut 7022 Leinfelden-Echterdingen Jüngling	Regelbarer luftbefeuchter fuer saug oder druckluftbetrieb
EP0305748A2 (fr) *	1987-09-04	1989-03-08	Ransburg-Gema AG	Installation de préparation de poudre de revêtement
DE60301390T2 (de) *	2002-02-07	2006-06-08	Commissariat à l'Energie Atomique	Verfahren und vorrichtung für atemluftproduktion
AT504677B1 (de) *	2007-01-03	2010-05-15	Hauptkorn Herbert	Verfahren zum lackieren einer oberfläche mit einem wasserlack

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3321191A (en) *	1966-02-11	1967-05-23	Herand K Najarian	Gas and liquid contact apparatus
ITTO20010278A1 (it) *	2001-03-23	2002-09-23	Anest Iwata Europ Srl	Pistola automatica a spruzzo.
DE202007012990U1 (de) *	2007-09-17	2009-02-12	Carcoustics Techconsult Gmbh	Luftreinigungsvorrichtung für Fahrzeuge
AT13361U1 (de) *	2012-03-12	2013-11-15	Hauptkorn Herbert	Vorrichtung zur Luftaufbereitung für einen Raum mit einer Lackieranlage für Wasserlacke

2017
- 2017-05-09 DE DE102017109932.8A patent/DE102017109932A1/de not_active Withdrawn
2018
- 2018-02-08 EP EP18155834.7A patent/EP3401019B1/fr active Active

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE8434355U1 (de) *	1984-11-23	1985-02-21	Sata-Farbspritztechnik GmbH, 7140 Ludwigsburg	Vorrichtung zum reinigen von druckluft
DE3518041A1 (de) *	1985-05-20	1986-11-20	Helmut 7022 Leinfelden-Echterdingen Jüngling	Regelbarer luftbefeuchter fuer saug oder druckluftbetrieb
EP0305748A2 (fr) *	1987-09-04	1989-03-08	Ransburg-Gema AG	Installation de préparation de poudre de revêtement
DE60301390T2 (de) *	2002-02-07	2006-06-08	Commissariat à l'Energie Atomique	Verfahren und vorrichtung für atemluftproduktion
AT504677B1 (de) *	2007-01-03	2010-05-15	Hauptkorn Herbert	Verfahren zum lackieren einer oberfläche mit einem wasserlack

Also Published As

Publication number	Publication date
EP3401019B1 (fr)	2020-03-25
DE102017109932A1 (de)	2018-11-15

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