EP2623211B1 - Cabine de pulvérisation - Google Patents

Cabine de pulvérisation Download PDF

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Publication number
EP2623211B1
EP2623211B1 EP13153294.7A EP13153294A EP2623211B1 EP 2623211 B1 EP2623211 B1 EP 2623211B1 EP 13153294 A EP13153294 A EP 13153294A EP 2623211 B1 EP2623211 B1 EP 2623211B1
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EP
European Patent Office
Prior art keywords
panels
booth
control unit
group
temperature
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.)
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Application number
EP13153294.7A
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German (de)
English (en)
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EP2623211A1 (fr
Inventor
Arsenio Coiro
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Coiro Srl
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Coiro Srl
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Publication of EP2623211A1 publication Critical patent/EP2623211A1/fr
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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
    • B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
    • B05B16/25—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations for both automatic and manual spraying
    • 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
    • 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
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
    • 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

  • This invention relates to a spray booth.
  • booths have the above-mentioned radiant electric panels arranged along the side walls and at the ceiling of the booth.
  • the bodywork or part of it is placed in the booth, it is "prepared" by covering any parts which do not need painting, and then the temperature of the booth is brought to a preset initial temperature.
  • This first step is commonly known as "stand-by", and the radiant electric panels are activated to bring the bodywork to an initial processing temperature.
  • the painting step begins, in which an external operator, or automated painting device, proceeds with painting of the parts.
  • the panels are activated to keep the temperature of the bodywork at a temperature which is as constant as possible.
  • the paint drying step begins, in which the bodywork is left in the booth for a predetermined period of time, and again in this case the temperature of the bodywork is kept as constant as possible for uniform paint drying.
  • the various temperatures previously mentioned may reach high values, depending on the type of material used to make the bodywork and the type of paint used, meaning that the power supplied by each panel is high and, therefore, there is an equally high overall energy consumption.
  • a ventilation system is associated with these booths, for generating a flow of air descending from the ceiling in such a way as to eliminate the fine dusts, residues of the painting.
  • Said ventilation system also uses the same source of electricity as the panels, and it also has considerable energy consumption.
  • Document US 4 908 231 discloses a spray booth having infrared lamps which are controlled by a microprocessor depending on the position of the body inside the boot and on the color to be sprayed.
  • Document EP1602413 discloses a spray booth having high temperature panels in the ceil and radiant panels at low temperature on the lateral wall.
  • the aim of this invention is therefore to provide a spray booth characterized by low overall energy consumption and consequently economic savings, but without compromising the quality of the work done.
  • a spray booth comprising a top wall and a plurality of side walls extending from the top wall and a plurality of radiant electric panels which diffuse heat, distributed on the side walls and on the ceiling.
  • the booth is characterized in that it comprises a control unit connected to the electric panels and capable of cyclically activating respective electric panels to obtain a wanted and set temperature value inside the booth.
  • the booth comprises a temperature sensor, located inside the booth, which measures a first temperature value of the masses to be painted housed in the booth, and a control panel for setting the temperature value wanted inside the booth.
  • the control unit receives, as input, from the sensor, a first signal indicating the reference temperature, and, from the control panel, a second signal indicating the temperature set.
  • the control unit can send, as output, a plurality of third signals for cyclically activating respective electric panels.
  • the unit only sends an activation signal to those panels whose radiated heat strikes the parts of the bodywork which must be heated to bring them to the temperature value set using the control panel.
  • Another advantageous feature of the invention is the fact that the panels are grouped together in a plurality of groups and the fact that the control unit cyclically controls activation of one or more of these groups.
  • the heating of the bodywork is made more uniform and drying of the paint more homogeneous.
  • the numeral 1 denotes in its entirety a spray booth according to this invention.
  • the booth 1 illustrated comprises a top wall or ceiling 2 and a plurality of side walls extending from the top wall 2.
  • the booth 1 comprises, according to the view shown in the figure, a first, left-hand wall 3 and a second, right-hand wall 4 which are opposite and facing each other.
  • the booth also comprises a third, inner end wall 5, interposed between the first and second walls.
  • the numeral 6 is used to denote the lower wall or floor which is facing the ceiling 2.
  • the booth 1 comprises a plurality of radiant electric panels 7 which diffuse heat, distributed on the side walls 3, 4, 5 and on the ceiling 2.
  • the panels 7 can also be placed at the entrance wall, not illustrated, which includes the access door to the booth 1.
  • Activation of the panels 7 is governed by a control unit 8, to which the panels 7 are logically connected.
  • the panels 7 are suitably activated so as to achieve in the booth 1 a temperature value T1 of the masses to be painted which is wanted and set.
  • Said temperature value T1 varies depending on the type of operation to be carried out. More precisely, it is possible to identify three main work cycles which the booth 1 can perform.
  • a first work cycle defines a booth 1 "stand-by" condition, in which the masses to be painted are housed in the booth 1 and are heated until they reach a temperature value suitable for painting them.
  • the masses to be painted are considered to be the bodywork of a motor vehicle or its related parts, without thereby limiting the scope of the invention.
  • a second work cycle relates to actual painting of the bodywork.
  • the panels 7 are brought to an operating temperature suitable for applying the paint.
  • the temperature of the bodywork in the booth 1 is kept as constant as possible to obtain uniform and homogeneous drying of the paint applied.
  • a third work cycle relates to drying of the paint at the end of its application.
  • the temperature of the bodywork is preferably raised and kept at that level as constantly as possible, to guarantee final drying of the paint which is again uniform and homogeneous.
  • control unit 8 is capable of cyclically activating respective electric panels 7 present.
  • each or several of them is/are activated cyclically.
  • the panels 7 are kept active until they reach a reference temperature TP, preferably greater than the wanted temperature value T1, in such a way as to compensate for their cooling when they are switched off. Therefore, once the reference temperature TP has been reached, these panels 7 are switched off and one or more of the other panels are activated.
  • TP preferably greater than the wanted temperature value T1
  • control unit 8 which is cyclical, that is to say, follows predetermined activation and switch off steps for the various panels 7 present in the booth.
  • the panels 7 are subject to "thermal hysteresis", that is to say, their cooling speed is lower than the heating speed. Therefore, once the panels 7 reach the above-mentioned reference temperature TP, before, when switched off, they cool down to a temperature which is less than the wanted temperature value T1 of the bodywork, a period of time elapses which is sufficient to allow one or more of the other panels 7 to in turn be activated until they reach the above-mentioned reference temperature TP. As already indicated, this principle is valid for any type of work cycle to be used in the booth 1.
  • the panels 7 are grouped together in a plurality of groups 9a, 9b, 9c.
  • the panels 7 are grouped into a first group 9a, a second group 9b and a third group 9c.
  • the first group 9a and the second group 9b are defined by at least the panels 7 present respectively on the first 3 side wall and on the second 4 side wall of the booth 1; whilst the third group 9c of panels 7 is defined by at least the panels 7 present on the ceiling 2 of the booth 1.
  • Each of the groups 9a, 9b, 9c, as shown in the figure, is individually connected to the control unit 8.
  • the control unit 8 cyclically controls the activation of at least one group of panels 7 at a time.
  • the control unit 8 cyclically controls the activation of one group of panels 7 at a time, in such a way as to achieve, for the reasons explained above, said energy saving.
  • the heating of the bodywork is made more uniform and drying of the paint more homogeneous.
  • the first group 9a of panels 7 comprises all of the panels 7 located on the left-hand first side wall 3 and part of the panels 7 present on the third, inner end side wall 5.
  • the second group 9b of panels 7 comprises all of the panels 7 located on the right-hand second side wall 4 and part of the panels 7 present on the third, inner end side wall 5.
  • the booth 1 is different to the previous one because the panels 7 present on the third inner end side wall 5 are included in the third group 9c of panels 7, in turn comprising all of the panels 7 located on the ceiling 2.
  • the spray booth 1 is also equipped with a temperature sensor 10.
  • the sensor 10 is located inside the booth 1 and is designed to measure the temperature of the masses (bodywork) to be painted which are housed in the booth.
  • the sensor 10 for example a common thermometer, is applied in contact with the bodywork and detects its temperature value T0.
  • the booth 1 is also fitted with a control panel 11 for setting the wanted temperature value T1 which the bodywork must be brought to.
  • the control panel 11 is preferably located on the outside of the booth 1 and can be used by an external operator, for instantly setting a precise temperature value T1, or it is possible to select a preset booth 1 work cycle. For example, it is possible to configure a preset work cycle relating to painting, and in this case the booth 1 automatically reaches and maintains constant the temperature value T1, which was preset for this cycle.
  • the booth 1 comprises a ventilation unit 12 which generates, inside the booth 1, a descending flow of air originating from the ceiling 2.
  • the booth 1 comprises a plurality of openings (not illustrated) made at the ceiling 2 and the ventilation unit 12 introduces said descending flow of air into the booth 1 through said openings.
  • This ventilation unit 12 is designed to eliminate the fine dusts which are residues from the painting.
  • the ventilation unit 12 preferably starts operating during the painting cycle in such a way as to prevent the residual dusts from becoming toxic for the operator who is painting the bodywork inside the booth 1.
  • the dusts are then unloaded through openings, not illustrated, made in the floor 6, under which there are extractors (not illustrated) or collection chambers (not illustrated) for these dusts.
  • the control unit 8 receives a first input signal S1, from the sensor 10 inside the booth, indicating the temperature T0 of the bodywork.
  • the control panel 11 can be used to manually set the temperature value T1 based on the type of work cycle to be performed, based on the type of material to be painted, based on the type of paint to be applied, etc., or it is possible to set a preset work cycle, and in this case the temperature value T1 is defined by the preset settings of the cycle.
  • the control panel 11 sends the control unit 8 a second signal S2 indicating the temperature value T1 which the bodywork must be brought up to.
  • the control unit 8 Based on these two input signals S1, S2, the control unit 8 cyclically activates the panels 7, or the groups 9a, 9b, 9c of panels, using a plurality of third signals S3.
  • Each third signal S3 is sent to one or more respective panels 7, or to one or more respective groups of panels, to activate them until they reach a reference temperature TP which is such that the temperature of the bodywork is raised to the wanted temperature value T1.
  • control unit 8 sends a signal S3a to the first group 9a of panels 7 to activate them until the reference temperature TP is reached.
  • the signal S3c relates to activation of the third group 9c of panels 7.
  • the sequence of activation of the panels 7 is predetermined by presetting the work cycle, in such a way as to obtain the best bodywork heating uniformity before, during and after painting.
  • control unit 8 can send the control panel 11, for viewing by the operator, one or more signals S4 relating to the bodywork temperature T0, to achievement of the wanted temperature T1, to the state of activation of the panels 7 or groups 9a, 9b, 9c of them, to the type of work cycle in progress, etc.
  • control unit 8 can send the ventilation unit 12 a fifth activation signal S5.
  • the fifth signal S5 too can be sent to the control unit 8 upon manual command from an operator, through the control panel 11, or automatically if a preset work cycle is selected.
  • the spray booth 1 may comprise a reconfiguration kit 13 for pre-existing spray booths.
  • kit 13 may be sold separately from the booth 1 and allows the reconfiguration of pre-existing booths so as to obtain a booth able to cyclically activate the panels present, and to obtain the same advantages as described above relative to the spray booth 1 according to this invention.
  • the reconfiguration kit 13 comprises the control unit 8, the control panel 11 and the temperature sensor 10.
  • control unit 8 it is possible to adapt the connection between the control unit 8 and the panels already present in any way, depending on requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Spray Control Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (11)

  1. Cabine de pulvérisation comprenant : une cloison supérieure ou plafond (2) et une pluralité de cloisons latérales (3, 4, 5) se prolongeant à partir de la cloison supérieure (2) ; une pluralité de panneaux électriques rayonnants (7) diffusant de la chaleur, répartis sur les cloisons latérales (3, 4, 5) et au plafond (2) ; une unité de commande (8) reliée aux panneaux électriques (7), la cabine de pulvérisation étant caractérisée en ce que l'unité de commande (8) est configurée pour cycliquement activer des panneaux électriques (7) respectifs pour obtenir une valeur de température (T1) désirée et établie des masses à peindre situées à l'intérieur de la cabine (1).
  2. Cabine selon la revendication 1, caractérisée en ce qu'elle comprend un détecteur de température (10) situé à l'intérieur de la cabine (1) destiné à mesurer une valeur de température (T0) des masses à peindre ; un tableau de commande (11) pour fixer la valeur de température (T1) désirée à laquelle les masses doivent être portées ; l'unité de commande (8) recevant un premier signal d'entrée (S1) du détecteur (10) indiquant la température (T0) des masses, et un second signal (S2) du tableau de commande (11) indiquant la température (T1) désirée, et pouvant envoyer une pluralité de troisièmes signaux de sortie (S3a, S3b, S3c) respectifs pour cycliquement activer les panneaux électriques (7) respectifs.
  3. Cabine selon l'une quelconque des revendications précédentes, caractérisée en ce que en ce que les panneaux (7) sont regroupés dans une pluralité de groupes (9a, 9b, 9c) ; l'unité de commande (8) commandant cycliquement l'activation d'au moins un groupe de panneaux (7) à la fois.
  4. Cabine selon la revendication 3, caractérisée en ce que l'unité de commande (8) commande cycliquement l'activation d'un seul groupe de panneaux (7) à la fois.
  5. Cabine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend un premier (9a), un second (9b) et un troisième (9c) groupes de panneaux (7) ; les premier (9a) et second (9b) groupes étant définis par au moins les panneaux (7) présents, respectivement, sur une première (3) et sur une seconde (4) cloison latérale de la cabine (1) étant à l'opposé et opposées réciproquement ; le troisième groupe (9c) étant défini par au moins les panneaux (7) présents sur la cloison supérieure (2) de la cabine (1).
  6. Cabine selon la revendication 2, caractérisée en ce que le second signal (S2) est envoyé à l'unité de commande (8) sur commande manuelle d'un opérateur à travers le tableau de commande (11), ou automatiquement si un cycle de travail préétabli est sélectionné.
  7. Cabine selon la revendication 5, caractérisée en ce qu'elle comprend une troisième cloison latérale d'extrémité intérieure (5), placée entre la première (3) et la seconde (4) cloison, comportant au moins l'un des premier (9a), second (9b) et troisième (9c) groupes de panneaux (7).
  8. Cabine selon la revendication 7, caractérisée en ce que le premier groupe (9a) de panneaux (7) comprend les panneaux (7) situés sur la première cloison latérale (3) et une partie des panneaux (7) présents sur la troisième cloison latérale d'extrémité intérieure (5) ; le second groupe (9b) de panneaux (7) comprenant les panneaux (7) situés sur la seconde cloison latérale (4) et une partie des panneaux (7) présents sur la troisième cloison latérale d'extrémité intérieure (5).
  9. Cabine selon la revendication 5, caractérisée en ce que le troisième groupe (9c) de panneaux (7) comprend les panneaux (7) situés sur la troisième cloison latérale d'extrémité intérieure (5) et une partie des panneaux (7) situés sur la cloison supérieure (2).
  10. Cabine selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une unité de ventilation (12) générant, à l'intérieur de la cabine (1), un flux descendant d'air provenant de la cloison supérieure (2) ; l'unité de commande (8) envoyant un cinquième signal (S5) pour activer l'unité de ventilation (12) sur commande manuel d'un opérateur, à travers le tableau de commande (11), ou automatiquement si un cycle de travail préétabli est sélectionné.
  11. Cabine selon l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend un KIT de reconfiguration (13), le KIT (13) comprenant l'unité de commande (8), le tableau de commande (11) et le détecteur de température (10).
EP13153294.7A 2012-01-31 2013-01-30 Cabine de pulvérisation Active EP2623211B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000045A ITBO20120045A1 (it) 2012-01-31 2012-01-31 Cabina di verniciatura

Publications (2)

Publication Number Publication Date
EP2623211A1 EP2623211A1 (fr) 2013-08-07
EP2623211B1 true EP2623211B1 (fr) 2018-12-12

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ID=45992638

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EP13153294.7A Active EP2623211B1 (fr) 2012-01-31 2013-01-30 Cabine de pulvérisation

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EP (1) EP2623211B1 (fr)
IT (1) ITBO20120045A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108787200B (zh) * 2018-07-16 2020-07-31 江西龙正科技发展有限公司 一种避免涂料浪费的机车喷涂装置
CN111097640B (zh) * 2019-12-05 2021-05-18 杰悦极(湖北)装饰工程股份有限公司 一种展柜面板复合烤漆工艺
CN111408510B (zh) * 2020-05-21 2020-11-24 朱少池 一种汽车美容用节能环保型烤漆房

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5282145A (en) * 1991-08-29 1994-01-25 Ronald Lipson Method of repair paint curing for production lines and apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4621187A (en) * 1985-02-01 1986-11-04 Petro Jr William A Paint spraying and curing booth
US4908231A (en) * 1986-09-08 1990-03-13 Bgk Finishing Systems, Inc. Automobile coating heat treating process
US6129285A (en) * 1998-08-11 2000-10-10 Schafka; Mark Louis System and method for air humidification
ITAR20040009U1 (it) * 2004-06-01 2004-09-01 Mario Nibi Cabina di verniciatura a riscaldamento elettrico ibrido
WO2006112600A1 (fr) * 2005-03-24 2006-10-26 Lee, Sang Won Dispositif de sechage de peinture faisant appel a un appareil de chauffage halogene

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5282145A (en) * 1991-08-29 1994-01-25 Ronald Lipson Method of repair paint curing for production lines and apparatus

Also Published As

Publication number Publication date
ITBO20120045A1 (it) 2013-08-01
EP2623211A1 (fr) 2013-08-07

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