EP0584638A2 - Dispositif de ventilation pour cabines de peinture ou similaires - Google Patents

Dispositif de ventilation pour cabines de peinture ou similaires Download PDF

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Publication number
EP0584638A2
EP0584638A2 EP93112801A EP93112801A EP0584638A2 EP 0584638 A2 EP0584638 A2 EP 0584638A2 EP 93112801 A EP93112801 A EP 93112801A EP 93112801 A EP93112801 A EP 93112801A EP 0584638 A2 EP0584638 A2 EP 0584638A2
Authority
EP
European Patent Office
Prior art keywords
air
ventilation
ventilation device
painting
booth
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
EP93112801A
Other languages
German (de)
English (en)
Other versions
EP0584638B1 (fr
EP0584638A3 (en
Inventor
Alfred Feige
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE9316880U priority Critical patent/DE9316880U1/de
Publication of EP0584638A2 publication Critical patent/EP0584638A2/fr
Publication of EP0584638A3 publication Critical patent/EP0584638A3/de
Application granted granted Critical
Publication of EP0584638B1 publication Critical patent/EP0584638B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
    • F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • 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

Definitions

  • the invention relates to ventilation devices for painting booths or the like.
  • air conveying and possibly air-conditioning devices such as fans and heaters, which ensure an air throughput through the cabin in a quantity predetermined for the painting process.
  • the object of the invention is an essential without impairing the health and quality aspects Achieve a reduction in energy requirements for the ventilation of paint booths.
  • At least one command transmitter for reducing and increasing the quantity to the predetermined quantity, which can be actuated as a function of the willingness to work for the painting process.
  • the high air throughput is only necessary during the actual painting process, because it primarily serves the spray mist that occurs during the painting process, provided that it is not deposited on the object to be painted, and the resulting increased margins Dissipate solvent vapors.
  • a substantially smaller amount of air is sufficient to remove the solvent vapors or the like which arise when the paint is vented. It has been found that about a third of the high air volume is sufficient for this, so that it is possible to down-regulate or switch down to a quarter to half, preferably a third, of this amount.
  • a switch on a suspension hook for the spray gun can be used, for example, as a command transmitter which can be actuated as a function of the readiness to work for the painting process. If it is hung there, it is not ready for use and the amount of air can be reduced.
  • a command for such a reduction or re-increase signal can also be a manually operated signal generator or z.
  • the operation of the spray gun can be used immediately.
  • the signal that actuates a solenoid valve for the compressed air supply to the spray gun could also be the corresponding relay for changing the pole of the fan motors actuate. In this case, the signal is given in an even closer coupling to the painting process.
  • a time delay circuit can be provided which maintains the high air output for a predetermined period of time (follow-up time) and only then initiates a reduction. For example, when the command is given by the solenoid valve of the spray gun, a run-on time of 10 to 30 seconds can be set in order to bridge a brief suspension of the painting process, for example when the painter changes position.
  • the reduction in the amount during painting breaks also has the advantage that the high air speed which is often disruptive in the case of intermediate activities is reduced, which could otherwise blow off covering materials or the like or blow onto freshly painted surfaces.
  • the air volume can preferably be reduced by reducing the speed of the fans. This can be done by frequency switching, pole switching, in the case of multi-pole electric motors or by other known control options for electric motors, also by means of stepless speed control. It is also possible to bring about a reduction when using several fans by switching off individual fans or groups of fans. Several switching stages, for example for a multi-stage decrease in the quantity depending on the interruption time of the painting process, are also possible.
  • a pressure ratio control should preferably be provided, which maintains an essentially constant pressure, namely preferably an overpressure in the painting booth, both before and after the change in quantity and during the change in quantity. This ensures that dust can never be sucked into the paint booth from outside.
  • Identical fans are preferably selected, specifically preferably even within the type group, both with regard to their performance and their run-up behavior (so-called twins).
  • pole switching can also be used if it is ensured that the exhaust air and supply air flows are changed in the same way.
  • special means for fine regulation for example throttle valves adjustable by an automatically operating pressure regulator, can be arranged in the supply or exhaust air duct. This also ensures the necessary fine-tuning in the event that, for example, the filters located in the exhaust air flow between the painting booth and the blower become increasingly clogged, thereby shifting the pressure conditions.
  • the control method describing this control method is contained in claim 10.
  • Heat recovery systems have already been designed here, but despite high system costs and susceptibility to faults as well as enormously high cleaning costs, only comparable energy savings were achieved.
  • the invention makes it possible to directly reduce the heating energy requirement by reducing the amount of air that is passed through. The respective adjustment can take place automatically without control intervention by regulating the temperature of the air thermostatically, so that it regulates itself automatically when the quantity is reduced. The only thing that should be ensured is that the regulation is sufficiently quick to access.
  • the drawings show a painting booth 11 which can be integrated or set in a building 12 or can also be portable.
  • a drying booth 13 is provided parallel to it and is separated from it, for example, by a roller door 14, so that the painted objects can be transported more easily from the painting booth 11 into the drying booth 12.
  • Both cabins have gates 15.
  • the painting booth has a ventilation device 16 which is separate from the ventilation device 17 of the drying chamber. It contains one or more fans 18 and an air heater 19 with a gas or oil burner 20.
  • the ventilation system can be switched between pure fresh air supply and recirculation mode, with a partial air flow of air enriched with exhaust gas vapors in the exhaust air chimney during recirculation mode via a separate evaporation line 21 22 can be initiated.
  • the fresh air is drawn in via an intake line 23 and the air heater discharges its exhaust gas via a separate chimney 24.
  • the air that flows through the painting booth 11 is supplied via an air inlet duct 25 running above the booth, then sinks as evenly as possible in the booth and exits via an exhaust air duct 26, which is arranged below a grating 27 in the floor of the booth. This feeds the air back to the central ventilation device 16, where, depending on whether it is a recirculation or fresh air operation, it is filtered and returned or exits via the exhaust air chimney 22.
  • the devices belonging to the ventilation device 16 are located in a separate room 28 outside the painting booth. There is also a control cabinet 29 in which the switches, regulators, etc. which control or regulate the ventilation device are combined.
  • a command transmitter 30 is mounted on a wall which contains a switch or signal transmitter which is actuated when a spray gun 31, which can be hung on a hook 33 connected to the switch, is removed or hung up again. If several spray guns are stationed in the room, there should be a command transmitter for all of them.
  • the commanding device is connected to the control cabinet 29, where it actuates the control of the fan or fans 18 so that it releases the full power of the fan when the spray gun 31 is removed, while the power is reduced by approximately 1/3 of the speed when the spray gun is attached Air volume throttles.
  • Fig. 3 shows schematically the ventilation devices.
  • the fresh air intake line 23 leads into a changeover chamber 40, in which a changeover flap 41 can be pivoted between a fresh air position (solid line) and a return air position (dash-dotted line). From there, the air flows via a pre-filter 42 to the fresh air blower 18a, from which it is conveyed through the air heater 19 into the supply air duct to the painting booth 11.
  • the air flows through the grating of the painting booth into the exhaust air duct 26, passes through a filter 43 and in turn flows to the switchover chamber, where it is guided to the inlet of the exhaust air fan 18b when the flap position (fresh air mode) is shown and is conveyed outside via the exhaust air chimney 22.
  • fans 18a, 18b should be absolutely identical. They should not only be the same in terms of blower and motor type and type and performance, but also, if possible, selected in such a way that they have absolutely identical performances in all control stages produced by pole changing and the same ramp-up times between these stages.
  • control devices in the form of blind-like switch flaps 44 are provided at the outlet in the exhaust air chimney or at the entry into the switchover chamber, which are operated manually or preferably automatically by control or regulating devices 45 and together with these form pressure ratio regulating means .
  • the regulation can take place depending on a pressure transmitter (not shown) in the painting booth or elsewhere in the air circuit.
  • the flaps are controlled so that a slight overpressure is constantly maintained in the painting booth. They are mainly for fine adjustment This overpressure is provided, while during the switchover between the work output and the reduced output, which is described below, and vice versa, the pressure ratio is automatically maintained by the identical design of the fans and appropriately dimensioned duct cross sections, etc.
  • the corresponding control elements could also be provided elsewhere in the ventilation system or could be designed differently, for example by slight power shifts between the fans.
  • the ventilation device works as follows: The objects to be painted, for example motor vehicles, machines or racks with small parts, are placed in the painting booth 11 and the gate 15 is closed. The ventilation device 16 is put into operation, since the spray gun 31 is attached to the commanding device hook 33, only with reduced power. After the object to be painted is correctly positioned and prepared accordingly for painting, the painter removes the spray gun 31. As a result, the signal for increasing the ventilation output is given and the fan 18 is now driven, for example by pole switching, to its full speed, which is reached in a few seconds. The air heater previously running at a lower output, which had thermostatically maintained the preselected temperature, is now driven higher because the increased air output threatens to lower the temperature and in turn maintains the set temperature.
  • the spray booth is switched to fresh air, ie it sucks Fresh air via the fresh air intake 23 and leads the exhaust air via the exhaust air chimney 22 to the outside.
  • the painter hangs the spray gun back on the hook 33 and, if necessary with an adjustable time delay, the air output is set again to the reduced amount.
  • the ventilation device could also be switched to recirculation mode, in which only a relatively small percentage of the circulated air is discharged to the outside via the evaporation line 21.
  • the signal or command could also be given by a corresponding foot actuation, a proximity switch, the triggering of the spray gun, etc.
  • the painted objects can be brought into the drying chamber after opening the roller door 14, where they are finally dried, essentially with circulating air.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
EP93112801A 1992-08-28 1993-08-10 Dispositif de ventilation pour cabines de peinture ou similaires Expired - Lifetime EP0584638B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9316880U DE9316880U1 (de) 1992-08-28 1993-08-10 Belüftungseinrichtung für Lackierkabinen o.dgl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4228660A DE4228660A1 (de) 1992-08-28 1992-08-28 Belüftungseinrichtung für Lackierkabinen o. dgl.
DE4228660 1992-08-28

Publications (3)

Publication Number Publication Date
EP0584638A2 true EP0584638A2 (fr) 1994-03-02
EP0584638A3 EP0584638A3 (en) 1994-07-20
EP0584638B1 EP0584638B1 (fr) 1996-09-11

Family

ID=6466658

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93112801A Expired - Lifetime EP0584638B1 (fr) 1992-08-28 1993-08-10 Dispositif de ventilation pour cabines de peinture ou similaires

Country Status (2)

Country Link
EP (1) EP0584638B1 (fr)
DE (2) DE4228660A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643077A (en) * 1995-06-16 1997-07-01 Ayer; Jacqueline Continually optimized, variable flow rate ventilation system
EP1222968A1 (fr) * 2001-01-15 2002-07-17 Bolin Heatex Technology GmbH Système de ventilation pour une cabine de peinture
EP2181774A1 (fr) * 2008-10-30 2010-05-05 Walusa, Sarl Procédé de gestion de la consommation de l'énergie dans un local professionnel et dispositif mettant en oeuvre ledit procédé
WO2011144527A1 (fr) * 2010-05-17 2011-11-24 Gerd Wurster Cabine de pulvérisation à circulation d'air

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712661A1 (de) * 1976-03-26 1977-09-29 Nippon Paint Co Ltd Einkammer-lackier- und -einbrennvorrichtung
WO1980001362A1 (fr) * 1978-12-28 1980-07-10 Protectaire Syst Cabine de pulverisation avec systeme d'economie d'energie et de protection contre l'incendie
DE3122371A1 (de) * 1981-06-05 1982-12-23 Hülsta Werke Hüls KG, 4424 Stadtlohn "vorrichtung zur steuerung von nachgeschalteten arbeitsgeraeten"
JPS5922678A (ja) * 1982-07-29 1984-02-04 Hino Motors Ltd 塗装用吹付け室の給排気装置
JPS59123569A (ja) * 1982-12-28 1984-07-17 Trinity Ind Corp 塗装ブ−スの運転方法
US4730553A (en) * 1985-12-27 1988-03-15 Trinity Industrial Corporation Method of operating an air-supplied type coating booth
DE3722537A1 (de) * 1987-07-08 1989-01-19 Brennenstuhl Kg Hugo Absaugvorrichtung fuer farbspritzraeume
EP0480664A2 (fr) * 1990-10-09 1992-04-15 Nordson Corporation Perfectionnements aux cabines de poudrage à ventilation modulée pour le revêtement des véhicules automobiles

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1859797A (en) * 1928-02-10 1932-05-24 William A Ready Spraying apparatus
DE3134248A1 (de) * 1981-08-29 1983-03-17 Ernst Wagner Kg, 7410 Reutlingen "verschliessbare kabine, insbesondere zum spritzen von farben, lacken u. dgl."
DE3326560A1 (de) * 1983-07-22 1985-02-07 LUTRO Luft- und Trockentechnik GmbH, 7022 Leinfelden-Echterdingen Farbspritz- und/oder trockenkabine
DE3804745A1 (de) * 1988-02-16 1989-08-24 Man Nutzfahrzeuge Gmbh Kuehlanlage fuer brennkraftmaschinen
DE4009352A1 (de) * 1990-03-23 1991-09-26 Richard Baeumer Verfahren und vorrichtung zur belueftung von raeumen

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712661A1 (de) * 1976-03-26 1977-09-29 Nippon Paint Co Ltd Einkammer-lackier- und -einbrennvorrichtung
WO1980001362A1 (fr) * 1978-12-28 1980-07-10 Protectaire Syst Cabine de pulverisation avec systeme d'economie d'energie et de protection contre l'incendie
DE3122371A1 (de) * 1981-06-05 1982-12-23 Hülsta Werke Hüls KG, 4424 Stadtlohn "vorrichtung zur steuerung von nachgeschalteten arbeitsgeraeten"
JPS5922678A (ja) * 1982-07-29 1984-02-04 Hino Motors Ltd 塗装用吹付け室の給排気装置
JPS59123569A (ja) * 1982-12-28 1984-07-17 Trinity Ind Corp 塗装ブ−スの運転方法
US4730553A (en) * 1985-12-27 1988-03-15 Trinity Industrial Corporation Method of operating an air-supplied type coating booth
DE3722537A1 (de) * 1987-07-08 1989-01-19 Brennenstuhl Kg Hugo Absaugvorrichtung fuer farbspritzraeume
EP0480664A2 (fr) * 1990-10-09 1992-04-15 Nordson Corporation Perfectionnements aux cabines de poudrage à ventilation modulée pour le revêtement des véhicules automobiles

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 106 (C-223)18. Mai 1984 & JP-A-59 022 678 (HINO JIDOSHA KOGYO KK) 4. Februar 1984 *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 241 (C-250)6. November 1984 & JP-A-59 123 569 (TORINITEI KOGYO KK) 17. Juli 1984 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643077A (en) * 1995-06-16 1997-07-01 Ayer; Jacqueline Continually optimized, variable flow rate ventilation system
EP1222968A1 (fr) * 2001-01-15 2002-07-17 Bolin Heatex Technology GmbH Système de ventilation pour une cabine de peinture
EP2181774A1 (fr) * 2008-10-30 2010-05-05 Walusa, Sarl Procédé de gestion de la consommation de l'énergie dans un local professionnel et dispositif mettant en oeuvre ledit procédé
FR2938084A1 (fr) * 2008-10-30 2010-05-07 Walusa Procede de gestion de la consommation de l'energie dans un local professionnel et dispositif mettant en oeuvre ledit procede
WO2011144527A1 (fr) * 2010-05-17 2011-11-24 Gerd Wurster Cabine de pulvérisation à circulation d'air

Also Published As

Publication number Publication date
DE59303730D1 (de) 1996-10-17
EP0584638B1 (fr) 1996-09-11
DE4228660A1 (de) 1994-03-03
EP0584638A3 (en) 1994-07-20

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