EP1080788B1 - Kühlzone einer Lackieranlage und Verfahren zum Betreiben einer solchen Kühlzone - Google Patents

Kühlzone einer Lackieranlage und Verfahren zum Betreiben einer solchen Kühlzone Download PDF

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Publication number
EP1080788B1
EP1080788B1 EP00117605A EP00117605A EP1080788B1 EP 1080788 B1 EP1080788 B1 EP 1080788B1 EP 00117605 A EP00117605 A EP 00117605A EP 00117605 A EP00117605 A EP 00117605A EP 1080788 B1 EP1080788 B1 EP 1080788B1
Authority
EP
European Patent Office
Prior art keywords
cooling zone
cooling
region
booth
inlet
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.)
Expired - Lifetime
Application number
EP00117605A
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German (de)
English (en)
French (fr)
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EP1080788A1 (de
Inventor
Konrad Dr. Ortlieb
Dietmar Wieland
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
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Filing date
Publication date
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Publication of EP1080788A1 publication Critical patent/EP1080788A1/de
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Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
    • B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
    • 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
    • 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
    • B05B14/49—Arrangements for collecting, re-using or eliminating excess spraying material for use in spray booths specially adapted for solvents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/12—Vehicle bodies, e.g. after being painted

Definitions

  • the present invention relates to a cooling zone of at least one a paint booth, a heated dryer for drying painted objects and a dryer in the direction of passage the objects downstream cooling zone for cooling of lacquered and dried articles Painting plant, wherein the cooling zone is a tunnel-like cooling zone cabin bordering with the interior of the cooling zone cabin Includes boundary walls, which between a Inlet opening and an outlet opening of the cooling zone cabin for the painted objects, and the boundary walls the cooling zone cabin in one to the inlet opening adjacent inlet area of the cooling zone with nozzles for blowing cooling air into the interior of the cooling zone cabin are provided.
  • a paint shop according to document EP-A-911 086, for which such a cooling zone is provided is, in particular a painting plant for coating Car bodies with paints, has as an integral part a tunnel-like series of cabins leading from one to painting article, such as a vehicle body, to go through one after the other; to this end a conveyor extends through the cabin row through, with the help of which the objects to be painted be transported through the paint shop.
  • This is a to be painted object, optionally after a suitable Pretreatment, in a paint booth, where it is can be a paint spray booth, coated with paint, which is then dried in a heated dryer, for what purpose the painted surfaces to a prescribed increased temperature must be brought.
  • the im Dryers resulting solvent vapors are from the dryer sucked off and burned, for example, before the dryer exhaust is directed into the open.
  • the cooling zone provided with the tunnel-type cooling zone cabin, cooled in the painted and dried objects become. If the dryer is operated continuously, it is required for thermal separation of the dryer from the dryer adjacent colder areas of the paint shop a dryer inlet and a dryer exit lock to provide, also tunnel-like, of the painted Having objects pass through cabins, in the usual heated fresh air is blown to create an air curtain through which the painted articles pass become.
  • the present invention is therefore based on the object to provide a cooling zone of the type mentioned, the allows a quick cooling of the painted objects, without that of these objects by solvent condensate caused paint damage occur.
  • the cooling zone according to the invention is therefore much better suited to a sufficiently rapid cooling of the painted objects avoiding damage caused by solvent condensate to achieve as already known from the prior art Solutions where, for example, the cabin ceiling one between the dryer and the cooling zone of a paint shop arranged cabin-like lock is heated, without that in this lock cooling air to cool the painted Blown objects.
  • the solvent vapors rise in the inlet area the cooling zone cabin upwards, so that in particular in the ceiling area of the cooling zone cabin the risk of Solvent condensate formation exists.
  • a Ceiling wall of the cooling zone cabin in the inlet area of the cooling zone essentially over the entire surface is heated.
  • the upper areas of side walls of the cooling zone cabin provide preferred sites for the formation of solvent condensate
  • a Upper area of side walls of the cooling zone cabin in the inlet area the cooling zone substantially over the entire surface heated is.
  • the heatable portion of the boundary walls the cooling zone cabin in the inlet area of the cooling zone by means of an electrical resistance heater is heated.
  • a Such electric heating is particularly easy on the desired temperature adjustable.
  • Such wall elements are simple and inexpensive to produce, if they each have two plates of an electrically insulating Material, preferably glass plates, and an intermediate these plates arranged electrical resistance heating element include.
  • the electrical resistance heating element as a transparent resistance heating layer is trained; when using glass plates remains here obtained the transparency of the wall elements.
  • Such heating can be realized in a simple manner be that the cooling zone in the inlet region of the Cooling zone arranged hot gas duct comprises, which with the Heatable section of the boundary walls of the cooling zone cabin is in heat-conducting contact.
  • a particularly efficient heat transfer from the hot gas the heatable portion is achieved if advantageously a lateral boundary of the hot gas channel through the Heatable section of the boundary walls of the cooling zone cabin is formed.
  • the hot gas duct clean gas from a thermal exhaust air purification system the paint shop is fed as a hot gas, this avoids the need for additional heating to heat the hot gas Energy must be expended. Rather, wearing in In this case, the heating of the heated portion of the Boundary walls of the cooling zone cabin to an efficient Use of the clean gas in the thermal exhaust air purification system the paint plant contained heat.
  • the clean gas of the thermal exhaust air purification system immediately after exiting the exhaust air purification system in usually has a higher temperature than this for heating of the heated portion to a temperature in Range of about 80 ° C to about 130 ° C required is, can be used to optimum use of the clean gas Heat be provided that the clean gas from the thermal Exhaust air purification system before feeding to the hot gas duct by at least one heat exchanger for heating through the dryer circulating air is hin tellleitbar.
  • the cooling zone is a higher temperature than the outside air temperature can lead to an efficient use of the residual heat content be provided of the hot gas that the hot gas after feeding to the hot gas passage through a heat exchanger for heating in sluices of the dryer devisblasender Fresh air is hin tellleitbar.
  • the cooling zone cabin in Outlet openings arranged at the top of their boundary walls for the exit of the cooling air from the interior of the Refrigerated zone cabin includes a complete extraction of all To reach solvent vapors from the cooling zone cabin.
  • Refrigeration zone cabin arranged in the lower part of its boundary walls Outlets for the exit of the cooling air from the interior of the cooling zone cabin comprises, is through this measure a favorable flow pattern in the interior of the Refrigerator zone generated at which much of the blown Cooling air the surfaces and possibly the inner surfaces the painted objects before sweeping the Cooling zone cabin leaves again, so that a particularly effective Cooling of the painted objects in the cooling zone cabin is reached.
  • the from the interior of the cooling zone cabin in the inlet area Exiting cooling air is through an inlet region-cooling air discharge channel discharged from the cooling zone. Since the from the Inlet area Exiting cooling air Solvent condensate droplets contains, which should not get into the ambient air, is in the inlet region-cooling air discharge duct advantageously arranged at least one condensate.
  • This condensate separator can vary depending on the size of the drop and Amount of the solvent condensate as separation medium a knitted wire, a monofilament or a lamellar structure.
  • the painted objects are in the Inlet area of the cooling zone cooled so far that subsequently a further cooling of the objects is possible without that solvent vapors are emitted from the articles, so that no heating to avoid solvent condensation more is needed.
  • the cooling zone in the direction of passage the objects adjoining the inlet area Has outlet area, wherein the boundary walls of the cooling zone cabin in the outlet area with nozzles for blowing Cooling air are provided in the interior of the cooling zone cabin, the boundary walls of the cooling zone cabin in the outlet area but need not be heated.
  • the cooling zone is cheaper manufacturable and operable.
  • a separate outlet area-cooling air discharge channel for those from the interior of the Cooling zone cabin in the outlet area exiting cooling air includes.
  • Solvent condensate at the boundary walls of the cooling zone cabin precipitates in the inlet area, it is favorable if the boundary walls of the cooling zone cabin in the inlet area provided with shielding, which at the boundary walls flowing condensate from the inlet openings the nozzles at which the injected cooling air into the interior the cooling zone compartment enters, keep away. This will even under unfavorable operating conditions or in case of failure the heating of the boundary walls of the cooling zone cabin prevents that solvent condensate in the region of the inlet openings the nozzles passes and the injected cooling air flow transported to the painted objects becomes.
  • the boundary walls of the cooling zone cabin formed solvent condensate can be removed from the cooling zone
  • the cooling zone at least one, preferably Removable from the cooling zone, condensate tank for recording of the boundary walls of the cooling zone cabin in the inlet region dripping condensate comprises.
  • the present invention is based on the further object a method of cooling in a paint booth painted and dried in a heated dryer objects in a direction of passage of the objects Dryer downstream cooling zone, the cooling zone a Tunnel-like cooling zone cabin with the interior of the cooling zone cabin includes delimiting boundary walls, which themselves between an inlet opening and an outlet opening extend the cooling zone cabin for the painted objects, at the cooling air means in the boundary walls the cooling zone cabin in a adjacent to the inlet opening Inlet area provided nozzles in the interior of the Cooling zone cabin is injected, to create a rapid Cooling of the painted objects allows, without that caused by these solvents by solvent condensate Paint damage occurs.
  • First embodiment of a cooling zone comprises a standing on a hall floor 102, essentially cuboid Exterior cabin 104, which in its interior a tunnel-like Cooling zone cabin 106 receives.
  • the refrigerated zone cabin 106 and the outside cabin 104 extend parallel to each other along a common longitudinal direction 108 (perpendicular to the drawing levels of Fig. 4 to 6).
  • the refrigerated zone cabin 106 and the outside cabin 104 have one common floor 110, which the side walls 112 of Outside cabin 104 and the side walls 114 of the cooling zone cabin 106 carries.
  • the outside cabin 104 is through a flat ceiling wall 116 and the cooling zone cabin 106 by an angled Ceiling wall 118 completed.
  • a Conveying device 122 for example, a support chain conveyor, arranged by means of which mounted on Skidrahmen 124 vehicle bodies 126 in a direction parallel to the longitudinal direction 108 Conveying direction through the cooling zone cabin 106 therethrough are eligible.
  • the conveyor 122 is known per se and their concrete Embodiment plays for the present invention no matter, so that on a detailed description of the Conveyor 122 is dispensed with.
  • the conveyor 122 promotes previously in a (not Painted booth painted and in a (not shown) heated dryer dried vehicle bodies 126 by a in Figs. 2 and 3 denoted by 128 Inlet opening into the cooling zone cabin 106 into and on a (not shown) outlet opening of the same out, with the contours of the inlet opening 128 and the Outlet opening of the apparent from FIGS. 4 to 6 cross-section the cooling zone cabin 106 correspond.
  • the entry opening 128 is followed by a designated 132 Inlet region of the cooling zone 100, which in turn a front part 134 which directly adjoins the Inlet opening 128 adjacent, and one along the conveying direction on the front part 134 following back part 136 includes (in Fig. 1, only the rear portion 136 of the lead-in area ) Shown.
  • FIG. 4 A schematic cross section through the front part 134 of Lead-in area 132 is shown in FIG. 4.
  • a cooling air supply channel 140 opens.
  • the cooling air supply passage 140 is at its the cooling air supply chamber 138 opposite end to a (not shown) Cooling air supply connected to a cooling air supply fan.
  • the symmetrical to a vertical longitudinal center plane 142 of Refrigerated zone cabin 106 and the outer cabin 104 formed and arranged side walls 114 in the front part 134 of the inlet region 132 each include a lower vertical one Side wall portion 144 extending from the bottom 110 upwards extends, an adjoining, from the vertical Longitudinal center plane 142 inclined lower oblique side wall area 146, an adjoining upwards middle vertical sidewall area 148, one at it adjoining upward, to the vertical longitudinal center plane 142 inclined upper oblique side wall portion 150 and a at the same upper vertical upper Side wall portion 152, which the angled ceiling wall 118 the cooling zone cabin 106 carries.
  • Each of the upper oblique side wall portions 150 is made in the conveying direction consecutive, essentially rectangular wall elements 154 composed by means of each between two consecutive wall elements 154 from the top of the middle vertical sidewall area 148 to the lower edge of the upper vertical sidewall area 152 extending retaining rails 156 at the middle vertical sidewall area 148 and the upper one vertical sidewall area 152 are fixed.
  • the rectangular wall elements 154 each comprise two rectangular, stacked glass plates 158 and 160, between those a transparent electrically conductive resistance layer is arranged.
  • each of the wall elements 154 is provided with a nozzle 162, which the outer glass plate 158 and the inner glass plate 160 of the wall element 154 passes through and the nozzle axis 164 substantially perpendicular to the respective wall element 154 is directed to the vehicle body 126, so that through each nozzle 162, cooling air from the front intake area cooling air supply chamber 138 in the interior 120th thedezonenkabine 106, directly to the cooled Vehicle body 126, can be blown.
  • the nozzles 162 are preferably arranged and aligned in this way, that injected through the same in the interior 120 Cooling air by existing on the vehicle bodies 126 Openings 166, such as window openings, in reach the interior of the vehicle bodies 126 to be cooled may be to the inner surfaces of the vehicle bodies 126 paint over and thus achieve a good cooling effect can.
  • the angled ceiling wall 118 of the cooling zone cabin 106th is in the inlet region 132 from successive along the conveying direction, essentially rectangular wall elements 168 composed.
  • the wall elements 168 as well as the wall elements 154 are made two stacked glass plates 158 and 160 and a formed therebetween transparent resistance layer.
  • the wall elements 168 are by means of between each two successive wall elements 168 extending retaining rails 171 on each one of the upper vertical side wall portions 152 and at one in the longitudinal direction 108th extending first rail 172 set.
  • the electrically conductive resistance layers of the wall elements 154 and 168 are each via a (not shown) Temperature controller to a (not shown) power supply connected so that the wall elements 154 and 168 by means of ohms generated in these resistive layers Heat to a predetermined temperature in the range of about 80 ° C to about 130 ° C can be heated.
  • the along the conveying direction of the front part 134th the inlet portion 132 subsequent rear portion 136 of Lead-in area 132 differs, as shown in FIG. 5 can be seen is, from the front part 134 of the lead-in area 132nd in that between the outer cabin 104 and the refrigerated zone cabin 106 remaining gap by slightly against the horizontal inclined false ceiling 174 in below the Tween ceilings 174 arranged rear inlet area-cooling air supply chambers 176 and one above the false ceilings 174 arranged inlet region-cooling air discharge chamber 178, in which from above through the ceiling wall 116 of the outer cabin 104th an inlet region-cooling air discharge channel 180 opens, divided is.
  • Each of the condensate separators 186 and 188 includes a a carrier grid 190 disposed separator medium 192nd
  • FIGS. 7 to 11 Examples of such separator media are shown in FIGS. 7 to 11 is shown.
  • FIGS. 7 and 8 may be formed as wire knit 194, through the mesh, the cooling air in the flow direction 222 passes through, with the entrained condensate droplets hang on the knitted fabric 194.
  • the separator medium as so-called Monofilament 196 may be formed as shown in Figs. 9 and 10 shown, wherein the net-like monofilament pyramidal Spans funnel, which flows through the cooling air be, with the entrained condensate droplets on the webs of the monofilament get stuck.
  • the separator medium a flock parallel to each other, across the Flow direction of the cooling air spaced-apart fins 198, which transverse to the flow direction 222nd the cooling air are corrugated and each have a first curved Scraper 200, which in the flow direction the cooling air is located just behind the respective shaft crest and a second curved scraper 201, which in the flow direction of the cooling air behind the first scraper 200 and on the opposite surface of each Slat 198 is arranged.
  • the separation effect is due to the fact that the entrained in the cooling air Condensate droplets preferred because of their inertia in the spaces between the scrapers 200 and 201, respectively and get the respective blade 198 and get stuck there, when the cooling air condensate aerosol through the curvature the fins 198 is accelerated transversely to the direction of flow.
  • the lamellae 198 and the monofilament 196 may consist of a Plastic material such as polyethylene or polytetrafluoroethylene be formed.
  • the front end of the intake area-cooling air discharge chamber seen in the conveying direction 178 is by means of a vertical front partition 202 (see Fig. 2) opposite the front Inlet area cooling air supply chamber 138 completed.
  • the rear inlet area cooling air supply chambers 176 are however, at its forward end in the conveying direction to the front intake area cooling air supply chamber 138 open, so that the cooling zone 100 supplied cooling air from the cooling air supply passage 140 through the front intake area cooling air supply chamber 138 in the rear inlet area-cooling air supply chambers 176 can get.
  • the upper vertical side wall portions 152 are in FIG rear part 136 of the lead-in area 132 not, as in the front part 134, completely closed, but with Inlet region outlet openings 204 provided, which between each one of the upper oblique side wall portions 150 on the one hand and the angled ceiling wall 118 of the cooling zone cabin 106 extend in the longitudinal direction 108 on the other hand.
  • the of the cooling air from the interior 120 of the cooling zone cabin 106 permeable clear width of the inlet area outlet openings 204 is by means of the angled ceiling wall 118 held, slidable in the vertical direction slider 206 adjustable.
  • the structure of the cooling zone 100 is correct in the rear Part 136 of the inlet region 132 with its structure in the front Part 134 of the inlet region 132 match.
  • the wall elements 154 have nozzles 162 through which Cooling air from the rear inlet area-cooling air supply chambers 176 injected into the interior 120 of the cooling zone cabin 106 can be.
  • the structure differs the cooling zone 100 in the outlet region 210 of the structure in the rear part 136 of the inlet region 132 in that the angled ceiling wall 118 'of the cooling zone cabin 106 in the outlet area 210 not made of heated wall elements, but is formed by non-heatable sheets 212.
  • the upper inclined side wall portion 150 'of the cooling zone cabin 106 is not heatable in the outlet area 210.
  • Outlet area 210 Of the between the outside cabin 104 and the refrigerating zone cabin 206 in FIG Outlet area 210 remaining space is replaced by a horizontal false ceiling 214 below the false ceiling 214 arranged outlet region-cooling air supply chambers 216, which with the rear inlet area-cooling air supply chambers 176 are connected, so that cooling air from the cooling air supply channel 140 through the front inlet area-cooling air supply chamber 138 and the rear inlet area-cooling air supply chambers 176 into the spout area cooling air supply chambers 216 can reach, and in one above the false ceiling 214th arranged outlet region-cooling air discharge chamber 218, in which from above through the ceiling wall 116 of the outside cabin 104 Outlet area-cooling air discharge channel 220 opens, divided.
  • the drain area cooling air discharge chamber 218 is in the interior 120 of the cooling zone cabin 106 via outlet area outlet openings 221, whose clear width by means of sliders 223 is adjustable, connected.
  • the outlet region-cooling air discharge channel 220 is above a (Not shown) cooling air extraction fan to a cooling air discharge chimney connected by which from the interior 120 of the cooling zone cabin 106 sucked cooling air in the Environment can escape.
  • the inlet region-cooling air discharge channel 180 at a flow direction of the cooling air behind the condensate traps 186 and 188 lying Point merged with the outlet area-cooling air discharge channel 220 is, so that both discharge channels on the same exhaust fan and the same cooling air discharge chimney in the surrounding Atmosphere flow.
  • Fig. 6 are also the upper oblique Side wall portions 150 'of the outlet portion 210 with nozzles 162nd provided, which the upper oblique side wall portions 150 ' penetrate substantially vertically and through which the Cooling air from the discharge area-cooling air supply chambers 216 in the interior 120 of the cooling zone cabin 106 is inflatable.
  • the number of nozzles 162 per unit area in the upper oblique side wall portions 150 ' of the spout area 210 is higher than in the upper oblique sidewall areas 150 of the inlet region 132.
  • the middle vertical side wall regions 148 ', the lower oblique side wall portions 146 'and the lower vertical Side wall portions 144 'of the side walls 114 of the cooling zone cabin 106 provided in the outlet region 210 with nozzles 162, their nozzle axes 164 to the through the cooling zone cabin 106th subsidized vehicle bodies 126 are directed towards.
  • the vehicle bodies 126 are moved in a passing direction the vehicle bodies 126 of the cooling zone 100 upstream Paint booth painted and in a heated dryer dried.
  • the vehicle bodies 126 leave the Dryers in heated condition and drive in this condition through the inlet opening 128 in the inlet region 132 of the Cooling zone 100 a.
  • the cooling of the vehicle bodies 126 in the inlet area 132 of the cooling zone 100 is achieved in that by means of Cooling air supply fan Suction of fresh air at ambient temperature and under increased pressure through the cooling air supply passage 140 in the front inlet region-cooling air supply chamber 138 and the two rear inlet area-cooling air supply chambers 176 is promoted. From these chambers, the cooling air blown through the nozzles 162 onto the vehicle bodies 126, which cool by the contact with the cooling air.
  • the heated by contact with the vehicle bodies 126 and with solvent vapors loaded cooling air is through the Inlet region outlet openings 204 in the upper region of the Refrigeration zone cabin 106 in the inlet region-cooling air discharge chamber 178 sucked, from where they are in the inlet region-cooling air discharge channel 180 arrived.
  • condensate 186 and 188 When flowing through the in the inlet region-cooling air discharge channel 180 deputed condensate 186 and 188 are those contained in the cooling air solvent condensate aerosol Solvent condensate droplets deposited so that a Contamination of in the flow direction of the cooling air the condensate absorbers 186 and 188 following areas of the inlet region-cooling air-discharge channel 180 and the cooling air suction fan and the cooling air discharge chimney by solvent condensate is largely prevented.
  • a condensation of solvent vapors on the interior 120 facing inner sides of the ceiling wall 118 and the upper oblique side wall portions 150 is thereby avoided that these wall areas by means of electrical heating the resistor heating layers arranged therein in operation the cooling zone 100 at a temperature in the range of about 80 ° C to about 130 ° C are held.
  • the draining condensate in the bottom 110 of the Refrigeration zone cabin 106 arranged (not shown) condensate collection containers be caught.
  • such condensate collection are from the Refrigerated zone cabin 106 removable to the accumulated therein Dispose of condensate from time to time.
  • the residence time of each vehicle body 126 in Einlaufbeeich 132 of the cooling zone 100 is typically about 1 up to 2 minutes.
  • the conveying device 122 operates in clock mode, that is, a vehicle body 126 in the inlet region 132 of the cooling zone 100th inside, the vehicle body 126 during the dwell time from about 1 to 2 minutes in the inlet area 132 let rest and then the vehicle body 126 in the Outlet region 210 of the cooling zone 100 further promotes.
  • clock mode that is, a vehicle body 126 in the inlet region 132 of the cooling zone 100th inside, the vehicle body 126 during the dwell time from about 1 to 2 minutes in the inlet area 132 let rest and then the vehicle body 126 in the Outlet region 210 of the cooling zone 100 further promotes.
  • the residence time in the inlet region 132 of the cooling zone 100 is such that the vehicle bodies 126 at the end of the dwell time have cooled down so much that they are substantially no longer emit solvent and / or plasticizer vapors.
  • the vehicle bodies 126 therefore continue to be cooled with great cooling power, without that the risk of condensation on the inner walls of the Cooling zone cabin 106 is made so that a heating of the Ceiling wall 118 'and the upper sloping sidewall areas 150 'can be dispensed in the outlet area 210.
  • the outlet area-cooling air supply chambers 216 supplied cooling air through the nozzles 162 in the interior 120 of the cooling zone cabin 106 injected and through the spout area outlet openings 221 into the spout area cooling air discharge chamber 218 sucked, from where the in the interior 120 heated cooling air through the outlet area-cooling air discharge channel 220, the cooling air suction fan and the Cooling air discharge chimney enters the environment. Since those in the outlet area 210 sucked cooling air substantially no solvent condensate is in the outlet area-cooling air discharge channel 220 no condensate separator required.
  • the condensate separator dimensioned smaller be as required if the whole Cooling air extracted from cooling zone 100 causes the condensate separators would have to happen.
  • a second embodiment shown in FIGS. 12 to 14 a cooling zone 100 differs from the above described first embodiment in that the in the Interior 120 injected cooling air in the inlet region 132 of the Cooling zone not through in the upper part of the cooling zone cabin 106 arranged outlet openings, but by in the bottom Area of the refrigerated zone cabin 106 in the lower vertical Side wall portions 144 of the inlet region 132 provided Outlet openings 224 is sucked, the clear width is adjustable by means of slides 225.
  • Fig. 14 is in the inlet region 132 of the second embodiment of a cooling zone 100 between the Outside cabin 104 and the cooling zone cabin 106 remaining gap by at the height of the upper edge of the lower vertical Side wall portions 144 arranged substantially horizontal False ceilings 226 below the false ceiling 226 arranged inlet region-cooling air discharge chambers 178 ' and inlet area cooling air supply chambers disposed above the false ceilings 226 176 'divided.
  • the ceiling wall 118 '' of the refrigerated zone cabin 106 is at the in FIGS. 12 to 14 show the second embodiment a cooling zone 100 not angled, but made flat; however, it would be readily possible for this embodiment as well an angled ceiling wall can be used.
  • the inlet area cooling air discharge chambers open 178 'am in the conveying direction behind lying end of the inlet region 132 in each case a vertical Inlet area cooling air exhaust duct 230.
  • the two Inlet area-cooling air discharge shafts 230 turn into an inlet region-cooling air discharge channel 180, which like the inlet region-cooling air discharge channel of the first embodiment with a first condensate separator 186 and a second condensate separator 188 is provided.
  • the outlet region 210 of the second embodiment of a Cooling zone 100 differs from that of the first embodiment only in that the cooling air through in the Outlet region outlet openings arranged at lower vertical sidewall regions 144 ' 232 is sucked out.
  • Which resulting changes in the construction of the outlet area 210 of the second embodiment correspond exactly to the above-described changes in the structure of the inlet area 132, so that a detailed description of this Changes are unnecessary.
  • a cooling zone 100 are also in the second embodiment in the inlet region 132nd the ceiling wall 118 "and the upper sloping sidewall areas 150 of electrically heatable wall elements 154 and 168 formed so that in the second embodiment, a Condensation on the inner walls in the upper area of the Cooling zone cabin 106 is reliably prevented.
  • the cooling air in the lower area thedezonenkabine 106 is sucked is a special favorable, indicated by arrows 222 in Fig.
  • the second embodiment of a cooling zone is correct 100 in structure and function with the first embodiment with reference to the above description is taken.
  • a third embodiment shown in FIGS. 15 to 18 a cooling zone 100 differs from the above described first embodiment in that instead of a electric heating of the ceiling wall and the upper sloping Side wall areas of the cooling zone cabin 106 in the inlet area 132 a heating of these areas by means of a through this Wall regions passed through hot gas is provided.
  • the clean gas of the thermal exhaust air purification system 234 is the cooling zone 100 supplied by a hot gas supply line 240, which warm side before entering the cooling zone 100 passes through a first heat exchanger 242, the cold side of circulating through a heating zone 244 of the dryer 236 Circulating air is flowed through, and warm side, a second heat exchanger Runs through 246, the cold side of a holding zone 248 of the dryer 236 circulating circulating air flows through becomes.
  • Hot gas channel 250 After the hot gas arranged in the cooling zone 100 Hot gas channel 250 has flowed through, it passes into a hot gas discharge line 252, in which the hot gas on the warm side flows through third heat exchanger 254, which cold side of from the environment sucked fresh air is flowed through, which after heating in the third heat exchanger by a Frischluftzutechnisch 256 partially an entrance lock 258 and partially an exit lock 260 of the dryer 236 is supplied.
  • Hot gas through a hot gas fireplace 262 in the environment After flowing through the third heat exchanger 254 occurs Hot gas through a hot gas fireplace 262 in the environment.
  • the above-described hot gas duct ensures that that the heat content of the clean gas of the thermal Exhaust air purification system 234 used as fully as possible before the hot gas escapes into the environment.
  • Fig. 17 differs the structure of the lead-in area 132 of the third embodiment a cooling zone 100 of that of the first embodiment in that the roof 118 '' 'and the upper oblique side wall portions 150 '' of the cooling zone cabin 106 not by electrical heated wall elements are formed, but instead its extending in the longitudinal direction 108 hot gas channels 250 include the interior 120 of the cooling zone cabin 106 facing boundary walls 263 at the same time interior walls the cooling zone cabin 106 form and by reinforcing ribs 265 can be stiffened.
  • Each is a heat insulation 264 made of a material with poor thermal conductivity arranged to release a Heat from the flowing through the hot gas channels 250 hot gas to the between the outside cabin 104 and the cooling zone cabin 106 to prevent remaining gap.
  • the upper oblique side wall portions 150 "of the third embodiment are as well as the corresponding wall areas of the first embodiment provided with nozzles 162, through which Cooling air from the inlet region-cooling air supply chambers 176 injected into the interior 120 of the cooling zone cabin 106 can be.
  • the nozzles 162 are through the thermal insulation 264 separated from the hot gas channels 250 to prevent that injected into the interior 120 cooling air through the the hot gas channels 250 heated hot gas is heated.
  • the inlet area cooling air discharge chamber 178 is above inlet area outlet openings 204 at the top of the Cooling zone cabin 106 with the interior 120 of the cooling zone cabin 106 and at their end in the conveying direction end with the inlet region-cooling air discharge channel 180 of the third Embodiment connected (see Fig. 15).
  • the hot gas channels 250 are at their in the conveying direction front ends with one in the front part of the inlet area 132 arranged hot gas inlet chamber 272, in which the hot gas supply line 240 opens and in which a hot gas fan 274 is arranged, which hot gas from the hot gas supply line 240 into the hot gas channels 250 promotes.
  • the hot gas channels 250 in the ceiling wall 118 '' 'and in the upper sloping side wall portions 150 "are at their in the conveying direction of the rear ends through hot gas wells 268th interconnected so that the hot gas through the hot gas channel in the ceiling wall 118 '' 'to the rear end of the inlet area 132 and from there through the hot gas channels 250 in the upper sloping side wall portions 150 '' back in the hot gas inlet chamber 272 passes.
  • the hot gas inlet chamber 272 opens from above an inclined partition wall 269, a hot gas exhaust duct 270 (See FIG. 15) which is connected to the hot gas discharge line 252 is.
  • the shielding elements 276 preferably have the shape of a downwardly open U and are at the upper oblique sidewall area 150 ", for example by welding. Basically, such shielding are also at can be used for electrical heating.
  • the third embodiment is a cooling zone 100 in structure and function with the first embodiment with reference to the above description is taken.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)
EP00117605A 1999-09-02 2000-08-16 Kühlzone einer Lackieranlage und Verfahren zum Betreiben einer solchen Kühlzone Expired - Lifetime EP1080788B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19941760A DE19941760A1 (de) 1999-09-02 1999-09-02 Kühlzone einer Lackieranlage und Verfahren zum Betreiben einer solchen Kühlzone
DE19941760 1999-09-02

Publications (2)

Publication Number Publication Date
EP1080788A1 EP1080788A1 (de) 2001-03-07
EP1080788B1 true EP1080788B1 (de) 2005-01-26

Family

ID=7920509

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EP00117605A Expired - Lifetime EP1080788B1 (de) 1999-09-02 2000-08-16 Kühlzone einer Lackieranlage und Verfahren zum Betreiben einer solchen Kühlzone

Country Status (5)

Country Link
EP (1) EP1080788B1 (ko)
KR (1) KR20010076185A (ko)
BR (1) BR0003977A (ko)
DE (2) DE19941760A1 (ko)
ES (1) ES2232360T3 (ko)

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EP4036506A3 (de) * 2015-07-31 2022-10-12 Dürr Systems AG Behandlungsanlage und verfahren zum behandeln von werkstücken
US11740021B2 (en) 2015-07-31 2023-08-29 Dürr Systems Ag Treatment installation and method for treating workpieces

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DE10125771C1 (de) * 2001-05-26 2002-11-21 Eisenmann Kg Maschbau Trockner
DE102004001628B4 (de) * 2004-01-12 2006-08-10 Eisenmann Maschinenbau Gmbh & Co. Kg Vorrichtung zur Behandlung von Gegenständen mit mindestens einem temperierten, gerichteten Luftstrahl
DE102007062266B4 (de) 2007-12-13 2016-12-22 Dürr Systems Ag Kühlsystem zum Kühlen von Gegenständen aus einer Lackierstraße, sowie Beschichtungsanlage
DE102009022459A1 (de) * 2009-04-02 2010-10-07 Volker Haas Vorabscheider für die An- bzw. Absaugöffnung von Sprühnebel-Absauganlagen, Lackieranlagen u. dgl.
DE102009021004A1 (de) 2009-04-24 2010-10-28 Dürr Systems GmbH Trocknungs- und/oder Härtungsanlage
DE102011117667A1 (de) * 2011-11-03 2013-05-08 Eisenmann Ag Filtermodul und Vorrichtung zum Abscheiden von Overspray sowie Anlage mit einer solchen
DE102013004136A1 (de) 2013-03-09 2014-09-11 Volkswagen Aktiengesellschaft Vorrichtung zum Trocknen eines Werkstücks und Verfahren zum Betrieb einer derartigen Vorrichtung
DE102013105320A1 (de) 2013-05-23 2014-11-27 Ev Group E. Thallner Gmbh Vorrichtung und Verfahren zum Beschichten eines Substrats
DE102015017280B3 (de) 2015-07-31 2019-04-04 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015017278B3 (de) 2015-07-31 2019-04-04 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015017279B3 (de) 2015-07-31 2019-04-04 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015012848A1 (de) * 2015-10-06 2017-04-06 Eisenmann Se Vorrichtung zur Temperierung von Gegenständen sowie Verfahren zur Steuerung einer Vorrichtung zur Temperierung von Gegenständen
DE102015014242A1 (de) 2015-11-05 2016-05-12 Daimler Ag Kühlzonenanordnung für eine Lackieranlage
CN106931742A (zh) * 2017-04-14 2017-07-07 汉广天工机械设备（北京）有限公司 一种含挥发成份湿物料两段式热泵烘干设备及烘干方法
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DE102022123370A1 (de) * 2022-09-13 2024-03-14 Belvac Production Machinery, Inc. Trocknungssystem und Verfahren zum Trocknen einer Dosenbeschichtung von Dosen
CN116511001A (zh) * 2023-04-11 2023-08-01 机械工业第四设计研究院有限公司 横向输送和纵向输送相结合的烘干及强冷室
CN117358485B (zh) * 2023-12-08 2024-03-15 江苏鑫常特材有限公司 一种不锈钢无缝管自动喷涂设备

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US11740021B2 (en) 2015-07-31 2023-08-29 Dürr Systems Ag Treatment installation and method for treating workpieces

Also Published As

Publication number Publication date
BR0003977A (pt) 2001-04-03
KR20010076185A (ko) 2001-08-11
DE19941760A1 (de) 2001-03-22
DE50009334D1 (de) 2005-03-03
EP1080788A1 (de) 2001-03-07
ES2232360T3 (es) 2005-06-01

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