EP2437895B2 - Umluftspritzkabine - Google Patents

Umluftspritzkabine Download PDF

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Publication number
EP2437895B2
EP2437895B2 EP11719560.2A EP11719560A EP2437895B2 EP 2437895 B2 EP2437895 B2 EP 2437895B2 EP 11719560 A EP11719560 A EP 11719560A EP 2437895 B2 EP2437895 B2 EP 2437895B2
Authority
EP
European Patent Office
Prior art keywords
air
spray booth
mode
recycled
fan
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.)
Active
Application number
EP11719560.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2437895A1 (de
EP2437895B1 (de
Inventor
Gerd Wurster
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.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=44170471&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2437895(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Priority to PL11719560T priority Critical patent/PL2437895T5/pl
Publication of EP2437895A1 publication Critical patent/EP2437895A1/de
Application granted granted Critical
Publication of EP2437895B1 publication Critical patent/EP2437895B1/de
Publication of EP2437895B2 publication Critical patent/EP2437895B2/de
Active 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
    • B05B16/00—Spray booths
    • B05B16/60—Ventilation arrangements specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/41—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by cleaning the walls of the booth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B14/00—Arrangements for collecting, re-using or eliminating excess spraying material
    • B05B14/40—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths
    • B05B14/46—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material
    • B05B14/468—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths by washing the air charged with excess material with scrubbing means arranged below the booth floor

Definitions

  • the invention relates to a circulating air spray booth with a work area for coating workpieces, with an extraction zone from which pollutant-containing, in particular solvent-containing, exhaust air is extracted, and with a fan for air circulation, the exhaust air from the spray booth in circulating air operation in the working area at least partially via at least one filter unit can be supplied again as recycled air.
  • Such spray booths are known as circulating air booths.
  • coating is preferably understood to mean spray painting.
  • the solvent concentration (measured in g / m 3 ) increases over time.
  • the concentration of the solvents should, however, not exceed 5 g / m 3 because of explosion safety.
  • the increase in the solvent concentration due to the recirculation mode does not play a special role as long as the permissible limit values are not exceeded.
  • the maximum solvent concentration of 5 g / m 3 permitted for exhaust air is too high, especially when large spray booths are involved, such as those used in the automotive industry.
  • the solvent concentration will, however, only decrease very slowly. It usually takes about 30 to 60 minutes to lower the solvent concentration, starting from, for example, a maximum permissible value of 5.0 g / m 3 to an acceptable value of, for example, 0.01 g / m 3 .
  • a spray booth according to the preamble of claim 1 is known, which is divided into several zones, in a central working area in which a higher air flow rate is required because of the spray application, and in a side area in which a lower air flow rate is required.
  • the spray booth can at least partially be operated in recirculation mode, which means that part of the less polluted air from the side area is processed again and fed as additional air into the application area in order to increase the air throughput here.
  • the air throughput of recycled air and fresh air can be designed variably and controlled automatically.
  • a circulating air spray booth according to the preamble of claim 1 is known, in which a switch is provided between a circulating air mode for painting and a quick venting mode for quick venting when the spray booth is to be entered. If you want to enter the spray booth, you can switch to quick ventilation mode. The air circulation mode is then ended and a vent is opened so that the solvent concentration inside the spray booth drops to a level that is permissible for entry.
  • the invention is based on the object of creating a circulating air spray booth which, when the spraying operation is interrupted, enables the solvent concentration to be rapidly reduced to a permissible value for entering the spray booth. Furthermore, the most energy-saving operation of the spray booth should be ensured.
  • the spray booth can be switched to a quick ventilation mode and in which at least partially non-recycled, preferably filtered, supply air is supplied to the work area, the solvent-containing air present in the work area is exchanged more quickly and the solvent concentration is reduced to permissible values more quickly.
  • a harmless solvent concentration is achieved after a short time after switching to quick exhaust operation, so that a worker can enter the spray booth without additional protective measures such as breathing masks.
  • part of the exhaust air is fed back into the spray booth via a filter unit as recycled supply air and part of the exhaust air is released to the environment via the roof or an exhaust air purification system.
  • the exhaust air released into the environment is previously treated, preferably washed, filtered and / or thermally post-treated or air-conditioned.
  • the prescribed limit values are complied with or a further reduction in the pollutant concentration can be achieved by means of thermal post-treatment (thermal post-combustion).
  • the spray booth can gradually be switched between a circulating air mode and a quick ventilation mode or vice versa.
  • air valve is understood to mean a valve of some kind for regulating air. In the simplest case, this is a variable flap with a servomotor.
  • the controllable fan usually has a frequency converter for low-loss control.
  • the spray booth comprises a conveyor for conveying workpieces through the spray booth via an entrance through the work area and an exit, at least one separate area being provided at the entrance and preferably at the exit of the spray booth, the connections for separate connections from the work area Has supply and exhaust air, each separated area being able to be subjected to an overpressure with respect to the environment.
  • At least one fan is preferably provided for the work area and at least one fan for each separated area, with non-recycled, filtered air being able to be supplied to the work area in the quick ventilation mode.
  • the work area is also freed of solvents by supplying non-recycled, filtered air. This is particularly important in the case of spray booths with a long design, in order to ensure sufficiently rapid ventilation.
  • the air supplied to the work area in quick ventilation mode can be branched off from at least one separated area.
  • only non-recycled, filtered air is fed in, at least in the separated area at the entrance.
  • air sucked out of the work area in quick ventilation mode is preferably not recycled, but is discharged as exhaust air.
  • At least one wet scrubber or suction device is provided, via which e.g. exhaust air is extracted at the bottom.
  • the spray booth is basically constructed in a known manner according to the state of the art, whereby the spray booth can also have several water-flooded trickle walls, which finally open into a common receptacle, through which exhaust air can be sucked off at the bottom, for example a venturi washer or the like can act.
  • Such wet scrubbers or suction devices are preferably provided in each sub-area of the spray booth.
  • the fan for the work area is operated in quick ventilation mode with a reduced output such that an overpressure is maintained in the area of the filter ceiling (plenum).
  • the fan power of the working area is preferably gradually reduced and filtered air that is not recycled is gradually supplied from a separate area.
  • the fan output of the work area is preferably gradually increased and non-recycled, filtered air supplied from a separated area is gradually diverted back into the separated area.
  • the working area is preferably continuously supplied with air via a filter unit, that is to say both during circulating air operation and during quick ventilation operation.
  • the filter ceiling (the plenum) is constantly under a certain overpressure, so that no dust detachment and the like occur.
  • a circulating air spray booth is shown in simplified form and denoted as a whole by the number 10.
  • the circulating air spray booth 10 has a closed housing 12 in which a work area 14 for spray painting workpieces 16 is located.
  • a wet scrubber 18 is provided below a floor 13, through which exhaust air is sucked off on the floor side.
  • air is fed in at 90,000 m 3 / h via a fan 22 via one or more filters 24 and fed into the work area 14 from above via a filter ceiling 20 (also known as plenum).
  • a part of the exhaust air sucked off via the wet scrubber 18 is sucked off via a further fan 28 and released to the outside, for example via the roof.
  • Fig. 2 is a slightly modified version of the spray booth according to Fig. 1 shown and designated as a whole by numeral 10a.
  • the working area 14 is supplied with circulating air via a fan 22 in circulating air mode via a filter 24 and a valve 32.
  • the fan 22 has an output of 100,000 m 3 / h in recirculation mode. While 90,000 m 3 / h are passed into the working area 14 as recycled, filtered air, 10,000 m 3 / h are fed via a valve 32 to a thermal post-combustion 34, where it is thermally post-burned and finally released into the open.
  • the thermal afterburning can preferably also be a regenerative thermal afterburning RNV.
  • FIG. 3 Another embodiment of a circulating air spray booth according to the invention is shown and denoted as a whole by number 10b.
  • This is a larger spray booth, such as that used for painting vehicles in the automotive industry.
  • the spray booth 10b has an elongated working area 14, which is only partially shown here, upstream of which an entrance area 38 (separate area at the entrance) is connected.
  • a conveyor 50 runs through the spray booth 10b, by means of which workpieces 16 are moved continuously or cyclically over the input area 38 through the work area 14.
  • the work area 14 has its own air duct, which is shown here in Fig. 3 is not shown.
  • a fan 40 is provided for the entrance area 38, by means of which fresh air is sucked in from the outside and is fed into the entrance area 38 from above via a filter 42 and a valve 44 via the plenum 20.
  • This is, for example, 50,000 m 3 / h.
  • a part, namely 20,000 m 3 / h, passes through a suction area 52 of the entrance area 38 and is finally released to the environment via a line 48.
  • 25,000 m 3 / h are diverted to work area 14.
  • the remaining 5,000 m 3 / h are released into the environment as "overpressure".
  • the spray booth 10b is therefore completely under excess pressure, so that no dust, foreign particles, etc.
  • the second part of 25,000 m 3 / h is supplied to the work area 14 via a further air valve 46. With the aid of this air flow, effective ventilation of the work area 14 is ensured, so that effective ventilation takes place even with very long work areas 14. In the quick ventilation mode, there is no further diversion of air from the entrance area 38 to the work area 14.
  • Fig. 4 is based on the previously based on Fig. 3
  • the illustrated embodiment now shows a complete version of a spray booth 10c for vehicle painting in the automotive sector.
  • the spray booth 10c has an elongated housing 12, with a work area 14, an entrance area 38 and an exit area 66. Again, workpieces 16 are guided by means of a conveyor 50 through the entrance area 38, the work area 14 and the exit area 66 of the spray booth 10c.
  • the work area 14 as well as the entrance area 38 and the exit area 36 are provided with wet scrubbers or suction devices 18 and 52 and 54, respectively. Filtered air is supplied from above via the plenum 20.
  • a fan 22 with 300,000 m 3 / h is used to supply 250,000 m 3 / h via a valve 32 as recycled, filtered air via the plenum 20 from above into the work area 14.
  • a total of 300,000 m 3 / h are sucked off by means of the blower 22 via a wet scrubber 18, the remaining 50,000 m 3 / h are discharged to the outside via a valve 30 or fed to a thermal post-combustion.
  • a blower 40 is provided at the entrance area 38, by means of which 80,000 m 3 / h are sucked in in recirculation mode and fed into the entrance area 38 via a valve 44 via the plenum 20.
  • 50,000 m 3 / h reach the outside as exhaust air via the suction device 52 and a further fan 28. Another 25,000 m 3 / h are diverted to work area 14. The remaining 5,000 m 3 / h escape to the outside as overpressure at the entrance.
  • a further blower 56 with 80,000 m 3 / h is provided in the exit area 66. These 80,000 m 3 / h are passed through a valve 60 from above via the plenum 20 into the outlet area 66. Of this, 50,000 m 3 / h reach the blower 56 via the suction device 54 and a valve 64. A further 30,000 m 3 / h are drawn in as fresh air via a valve 62 from the outside via the blower 56.
  • a further portion of 25,000 m 3 / h of the air flow of 80,000 m 3 / h supplied via the valve 60 is diverted into the working area 14.
  • the remaining portion of 5,000 m 3 / h escapes to the outside from the exit area 66, so that no ingress of dust and the like is possible here either.
  • the two fans 40, 56 continue to run with the same output of 80,000 m 3 / h.
  • the fan 22 is reduced to an output of 50,000 m 3 / h.
  • These 50,000 m 3 / h continue to be discharged to the outside via the valve 30 or passed to thermal post-combustion.
  • the valve 32 is closed so that no more recycled air can get into the working area 14.
  • the valve position of the valve 44 is changed in such a way that only 55,000 m 3 / h reach the inlet area 38 via this valve 44.
  • the remaining portion of 25,000 m 3 / h is fed via a valve 46 into the working area 14 via the plenum 20.
  • the air flow of 55,000 m 3 / h in the entrance area 38 reaches the outside at 50,000 m 3 / h via the suction device 52 and the fan 28 as exhaust air, while 5,000 m 3 / h escape at the entrance as overpressure.
  • air supplied from the valve 44 is no longer diverted into the working area 14.
  • a valve 58 deflects part of the air flow of 80,000 m 3 / h, namely 25,000 m 3 / h, via the plenum 20 from above into the work area 14.
  • the remaining portion of 55,000 m 3 / h is led through the exit area 66, with no more diversion into the work area 14.
  • 50,000 m 3 / h return to the fan 56 via the suction device 54 and the valve 64, while the remaining 5,000 m 3 / h escape as overpressure at the outlet.
  • the spray booth 10c is ventilated very quickly when switching to rapid venting mode. At the same time, it is avoided that the fan 56 has to be started up again from zero, so that start-up vibrations etc. that arise as a result are avoided.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP11719560.2A 2010-05-17 2011-05-13 Umluftspritzkabine Active EP2437895B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11719560T PL2437895T5 (pl) 2010-05-17 2011-05-13 Natryskowa kabina lakiernicza z recyrkulacją powietrza

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010021540A DE102010021540A1 (de) 2010-05-17 2010-05-17 Umluftspritzkabine
PCT/EP2011/057755 WO2011144527A1 (de) 2010-05-17 2011-05-13 Umluftspritzkabine

Publications (3)

Publication Number Publication Date
EP2437895A1 EP2437895A1 (de) 2012-04-11
EP2437895B1 EP2437895B1 (de) 2014-01-22
EP2437895B2 true EP2437895B2 (de) 2020-11-04

Family

ID=44170471

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11719560.2A Active EP2437895B2 (de) 2010-05-17 2011-05-13 Umluftspritzkabine

Country Status (6)

Country Link
EP (1) EP2437895B2 (pl)
DE (1) DE102010021540A1 (pl)
ES (1) ES2445766T5 (pl)
PL (1) PL2437895T5 (pl)
PT (1) PT2437895E (pl)
WO (1) WO2011144527A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012103894U1 (de) 2012-10-11 2014-01-15 Dürr Systems GmbH Oberflächenbehandlungsvorrichtung
DE102016114466A1 (de) * 2016-08-04 2018-02-08 Eisenmann Se Konditioniervorrichtung und Verfahren zum Konditionieren eines gasförmigen Mediums sowie Anlage und Verfahren zum Behandeln von Werkstücken
CN110891541A (zh) 2017-05-05 2020-03-17 巴德里·阿穆图尔 刺激方法和设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334257C1 (de) † 1983-09-22 1985-02-14 RMG Beierling GmbH, 4791 Altenbeken Lackier- und Abdunstanlage mit Umluftbelueftung
DE19941184A1 (de) † 1999-08-30 2001-03-01 Flaekt Ab Lacktrockner und Lacktrockneranlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE454328B (sv) 1982-04-30 1988-04-25 Flaekt Ab Forfarande och anordning for ventilering av en sprutbox
DE4228660A1 (de) * 1992-08-28 1994-03-03 Alfred Feige Belüftungseinrichtung für Lackierkabinen o. dgl.
US5643077A (en) * 1995-06-16 1997-07-01 Ayer; Jacqueline Continually optimized, variable flow rate ventilation system
ATE428508T1 (de) * 2001-01-15 2009-05-15 Bolin Heatex Technology Gmbh Belüftungsvorrichtung für eine spritzkabine eines lackierbetriebs
DE102007015150A1 (de) * 2007-03-02 2008-09-04 Wurster, Gerd Lackieranlage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334257C1 (de) † 1983-09-22 1985-02-14 RMG Beierling GmbH, 4791 Altenbeken Lackier- und Abdunstanlage mit Umluftbelueftung
DE19941184A1 (de) † 1999-08-30 2001-03-01 Flaekt Ab Lacktrockner und Lacktrockneranlage

Also Published As

Publication number Publication date
EP2437895A1 (de) 2012-04-11
PL2437895T5 (pl) 2021-03-08
WO2011144527A1 (de) 2011-11-24
ES2445766T5 (es) 2021-06-18
DE102010021540A1 (de) 2011-11-17
ES2445766T3 (es) 2014-03-05
PL2437895T3 (pl) 2014-06-30
PT2437895E (pt) 2014-03-27
EP2437895B1 (de) 2014-01-22

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