EP1602413B1 - Spray booth with hybrid electrical heating - Google Patents

Spray booth with hybrid electrical heating Download PDF

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Publication number
EP1602413B1
EP1602413B1 EP05425387A EP05425387A EP1602413B1 EP 1602413 B1 EP1602413 B1 EP 1602413B1 EP 05425387 A EP05425387 A EP 05425387A EP 05425387 A EP05425387 A EP 05425387A EP 1602413 B1 EP1602413 B1 EP 1602413B1
Authority
EP
European Patent Office
Prior art keywords
electrical
panels
painting
high temperature
spray 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.)
Active
Application number
EP05425387A
Other languages
German (de)
French (fr)
Other versions
EP1602413A2 (en
EP1602413A3 (en
Inventor
Mario Nibi
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.)
Coiro Srl
Original Assignee
Coiro Srl
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
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Application filed by Coiro Srl filed Critical Coiro Srl
Publication of EP1602413A2 publication Critical patent/EP1602413A2/en
Publication of EP1602413A3 publication Critical patent/EP1602413A3/en
Application granted granted Critical
Publication of EP1602413B1 publication Critical patent/EP1602413B1/en
Active legal-status Critical Current
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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
    • F26B3/30—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
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/06—Chambers, containers, or receptacles
    • F26B25/08—Parts thereof
    • F26B25/12—Walls or sides; Doors
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • 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
    • B05B16/40—Construction elements specially adapted therefor, e.g. floors, walls or ceilings
    • 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 invention concerns a spray booth particularly adapted to be used for the painting of the bodywork of vehicles and of its parts, with the heating of the painted parts to be dried executed by electrical energy.
  • this air flow is heated inside an heat exchanger provided with special burner, in another case the heating is made by electrical resistors lapped by the air which has to be heated before passing throughout the painting/drying room.
  • This kind of booth requires also the connection to the plant which distributes the combustible gas or to an autonomous tank of combustible supply, with all disadvantages that this can cause.
  • Booths which have the painting/drying room defined in the perimatrical walls by this kind of heated panels have resulted particularly advantageous because of the structure of the booth will be simplified; it is not necessary to have any combustion heating unit; the temperature inside the painting/drying room results relatively low and easy to be regulate; there is no pollution produced; the painting room appears well-finished.
  • This kind of booths with radiant panels with diffused heat result particularly advantageous because of the heating is carried on mainly on the masses inside the painting/drying room.
  • This kind of booths have the disadvantage o not supplying sufficient heat to allow the masses inside the painting/drying room to reach a temperature of about 60-70°C, as it is required for some kind of paints, for example for water paint, or to reach temperatures of about 40-50°C, as it is required for the drying of surfaces covered with common paint, in case the booth is installed in particularly cold areas or during the winter time, when the temperatures are rough and the thermal exchanges with the external increase.
  • US-A-4 621 187 discloses a paint spraying and curing booth that includes quartz tube radiant heaters mounted flush with the interior walls of the enclosure for heating the painted vehicle.
  • An aim of the present invention is the realization of a spray booth in which the required heat to heat the masses at its inside has only an electrical origin, also when the required temperatures are relatively high.
  • Another aim of the present invention is the realization of a booth in which the production of the heat is concentrated inside the painting/drying room, in order to limit the wasting of the heat with the external, without needing expensive and particular insulations during the circulation way of the air flow.
  • Another aim of the present invention is the realization of a booth which has a heating plant that is not dangerous for the operator when he is inside the painting/drying room.
  • Another aim is to realize a heating plant which has an easy regulation to adjust the value of the heating of the masses inside the painting/drying room to the particular executed painting, that means to reach on the masses inside said painting/drying room the optimum operating temperature, also if the outside temperature is very low, for example when the spray booth is installed in very cold countries or it is used during the coldest winter periods.
  • a spray booth comprising a painting/drying room with an electrical radiant heating, which is characterized in that the heating comprises a hybrid electrical heating including the combination of electrical radiant panels with diffused heat and supplementary electrical radiant panels at high temperature, whereby the first ones are distributed on the perimetrical walls of the painting/drying room, and the second ones are placed towards the top of the walls at heights from the floor that can not be reached by the operator during a normal working process.
  • This kind of spray booth results advantageous since it uses only electrical energy, it is constructively simple, it presents a high quality of finishing and it does not produce pollution due to combustible products.
  • the plurality of the electrical radiant panels with diffused heat allows to bring the temperature of the surfaces of the masses inside the painting/drying room to the required conditions or near to the required conditions, in order to operate the drying process in optimal conditions.
  • the plurality of the electrical panels at high temperature allows to operate a thermal integration and to lead the temperature of these surfaces to the retained optimal value to carry on the drying process on the painted surfaces also in unfavourable environment conditions.
  • This supplemental intervention is required at least in cases in which the reached temperature on the surfaces of the masses inside the painting/drying room by means of the effect of the only electrical radiant panels with diffused heat is insufficient.
  • the electrical radiant panels at high temperature allow to carry out the required energetic supplement, by the regulation of their energetic flow.
  • the invention consists of a booth, particularly suitable for the spray painting of the bodywork of vehicles and/or their parts and for their drying, provided with a heating unit obtained by the combination of electrical radiant panels 1 with diffused heat and supplemetary electrical radiant panels at high temperature 2, the second ones intended to intervene every time the required thermal conditions are not reached with the only use of the electrical radiant panels 1 with diffused heat, the peculiarity of which is to operate with relatively low temperatures and with large surfaces of thermal exchange.
  • the electrical radiant panels with diffused heat are distributed on the perimetrical walls 3 and in particular on the longitudinal side walls and, in case, on the wall faced to the entrance of the booth. They can be also located on the entrance wall, where there is the entrance door. They are usually located in rows parallel to the floor 4 and usually they are intercalated with illuminating panels and/or units 5, distributed in rows at different heights, in order to have a diffused lighting, so as to eliminate the shades on the surfaces that have to be painted and to facilitate the work of the operator who has to distribute the paint on the bodywork of the vehicle or on its parts, or on anything else that has to be painted.
  • the electrical radiant panels at high temperature 2 are placed towards the top of the perimetrical walls, at heights from the floor that can not be reached by the operator during the normal working process, in order that he can not accidentally get in contact with these panels, according to the present safety standards.
  • the arrangement of the electrical panels at high temperature 2 on one side assures the safety of the operator when he enters into the booth and the system is working, on the other side it allows their thermal radiations to invest the upper parts of the painted masses located inside the painting/drying room.
  • the upper parts of the painted masses are directly invested by the air flow 8, coming from the filtering ceiling, so they tend to maintain lower temperatures and consequently they require a higher thermal irradiation.
  • All of these electrical radiant panels at high temperature 2 can be activated, or only some of them, or all of them can be partly activated.
  • the present spray booth has therefore a painting/drying room where the painted surfaces of the masses at its inside are heated by irradiation of thermal energy produced by electrical radiant panels of two different kinds, the first one with diffused heat the second ones with high temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Solid Materials (AREA)
  • Central Heating Systems (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Coating Apparatus (AREA)

Description

  • The invention concerns a spray booth particularly adapted to be used for the painting of the bodywork of vehicles and of its parts, with the heating of the painted parts to be dried executed by electrical energy.
  • There are known spray booths in which, after the painting cycle of the surface of vehicles bodywork or parts of it, the drying unit is activated in order to make the heated air circulating inside the booth, normally with this circulation directed from the filtering ceiling to the floor of the booth. The air flow which operates the drying of the painted surfaces has normally a temperature from 35° to 90° C.
  • In one case this air flow is heated inside an heat exchanger provided with special burner, in another case the heating is made by electrical resistors lapped by the air which has to be heated before passing throughout the painting/drying room.
  • The use of heating units with burners requires a more complex elaboration of the booth and so that an higher cost and a considerable complexity of working.
  • This kind of booth requires also the connection to the plant which distributes the combustible gas or to an autonomous tank of combustible supply, with all disadvantages that this can cause.
  • The use of electrical units for the heating of the air involves the solution of problems concerning the realization of the electrical insulation and of the locating of the heating units, since the heating surfaces, which can reach a temperature of more than 150 - 200°C, must not be reachable by the operator casually.
  • That means that the normal surfaces heated by the passage of the electrical current should not be inside the painting and drying room, but should be dislocated in the air way at the external of said painting/drying room, with all the insulating problems that this can involve, in order that the thermal exchanges are reduced with the external upstream of the filtering ceiling.
  • This disadvantage has been overcome by the owner of the present invention who has used electrical radiant panels with diffused heat provided at their inside with a thermo-electrical tissue with a high electrical insulation which is the subject matter of Patent Application PCT/IT99/00193 , in which panels the temperature of the heated surface is relatively low, according to the safety standards which provide that the temperature of said surfaces not exceed 150° C.
  • Booths which have the painting/drying room defined in the perimatrical walls by this kind of heated panels have resulted particularly advantageous because of the structure of the booth will be simplified; it is not necessary to have any combustion heating unit; the temperature inside the painting/drying room results relatively low and easy to be regulate; there is no pollution produced; the painting room appears well-finished.
  • This kind of booths with radiant panels with diffused heat result particularly advantageous because of the heating is carried on mainly on the masses inside the painting/drying room. This kind of booths have the disadvantage o not supplying sufficient heat to allow the masses inside the painting/drying room to reach a temperature of about 60-70°C, as it is required for some kind of paints, for example for water paint, or to reach temperatures of about 40-50°C, as it is required for the drying of surfaces covered with common paint, in case the booth is installed in particularly cold areas or during the winter time, when the temperatures are rough and the thermal exchanges with the external increase.
  • US-A-4 621 187 discloses a paint spraying and curing booth that includes quartz tube radiant heaters mounted flush with the interior walls of the enclosure for heating the painted vehicle.
  • An aim of the present invention is the realization of a spray booth in which the required heat to heat the masses at its inside has only an electrical origin, also when the required temperatures are relatively high.
  • Another aim of the present invention is the realization of a booth in which the production of the heat is concentrated inside the painting/drying room, in order to limit the wasting of the heat with the external, without needing expensive and particular insulations during the circulation way of the air flow.
  • Another aim of the present invention is the realization of a booth which has a heating plant that is not dangerous for the operator when he is inside the painting/drying room.
  • Finally, another aim is to realize a heating plant which has an easy regulation to adjust the value of the heating of the masses inside the painting/drying room to the particular executed painting, that means to reach on the masses inside said painting/drying room the optimum operating temperature, also if the outside temperature is very low, for example when the spray booth is installed in very cold countries or it is used during the coldest winter periods.
  • In accordance with the invention, there is provided a spray booth comprising a painting/drying room with an electrical radiant heating, which is characterized in that the heating comprises a hybrid electrical heating including the combination of electrical radiant panels with diffused heat and supplementary electrical radiant panels at high temperature, whereby the first ones are distributed on the perimetrical walls of the painting/drying room, and the second ones are placed towards the top of the walls at heights from the floor that can not be reached by the operator during a normal working process.
  • This kind of spray booth results advantageous since it uses only electrical energy, it is constructively simple, it presents a high quality of finishing and it does not produce pollution due to combustible products.
  • It results also advantageous since the high temperature electrical radiant panels which are placed towards the top of the side walls irradiate thermal energy which invest mainly the upper parts of the painted surfaces located inside the painting/drying room which are directly invested by the drying air flow, which tends to make them cold, so that said upper parts need a greater heating.
  • The plurality of the electrical radiant panels with diffused heat allows to bring the temperature of the surfaces of the masses inside the painting/drying room to the required conditions or near to the required conditions, in order to operate the drying process in optimal conditions.
  • The plurality of the electrical panels at high temperature allows to operate a thermal integration and to lead the temperature of these surfaces to the retained optimal value to carry on the drying process on the painted surfaces also in unfavourable environment conditions.
  • This supplemental intervention is required at least in cases in which the reached temperature on the surfaces of the masses inside the painting/drying room by means of the effect of the only electrical radiant panels with diffused heat is insufficient. The electrical radiant panels at high temperature allow to carry out the required energetic supplement, by the regulation of their energetic flow.
  • So that it is obtained a drying process in the best conditions, both in function of the type of paint that has to be dried and in function of the environment and the temperature of the environment where the booth is installed. All this permits to operate, in case of favourable environment conditions, with a limited heating of the masses inside the painting/drying room using only the electrical radiant panels with diffused heat which panel it, with a considerable saving of energy. However, in any condition there are considerable savings of energy and of insulation.
  • These and other advantages will be particularly clear to the technicians of this field by the reading of the following detailed description, with reference to the embodiment exemplified in the schematic drawings reproduced on the enclosed table, in which:
    • figure 1 is the perspective view of the internal of the painting/drying room of a spray booth according to the present invention;
    • figure 2 shows, in a different scale, the distribution of the thermal panels and the luminous panels on a side wall of the painting/drying room;
    • figure 3 shows a high temperature electrical radiant panel;
    • figure 4 shows the irradiation of the heat operated by the electrical 20 radiant panels and the current air flow of the drying process inside the booth where a vehicle is placed.
  • It is understood that the drawings have only an exemplified aim to facilitate the comprehension of the present invention, without being a limitation for it.
  • Substantially the invention consists of a booth, particularly suitable for the spray painting of the bodywork of vehicles and/or their parts and for their drying, provided with a heating unit obtained by the combination of electrical radiant panels 1 with diffused heat and supplemetary electrical radiant panels at high temperature 2, the second ones intended to intervene every time the required thermal conditions are not reached with the only use of the electrical radiant panels 1 with diffused heat, the peculiarity of which is to operate with relatively low temperatures and with large surfaces of thermal exchange.
  • Inside the painting/drying room of this booth, the electrical radiant panels with diffused heat are distributed on the perimetrical walls 3 and in particular on the longitudinal side walls and, in case, on the wall faced to the entrance of the booth. They can be also located on the entrance wall, where there is the entrance door. They are usually located in rows parallel to the floor 4 and usually they are intercalated with illuminating panels and/or units 5, distributed in rows at different heights, in order to have a diffused lighting, so as to eliminate the shades on the surfaces that have to be painted and to facilitate the work of the operator who has to distribute the paint on the bodywork of the vehicle or on its parts, or on anything else that has to be painted.
  • The electrical radiant panels at high temperature 2 are placed towards the top of the perimetrical walls, at heights from the floor that can not be reached by the operator during the normal working process, in order that he can not accidentally get in contact with these panels, according to the present safety standards.
  • The arrangement of the electrical panels at high temperature 2 on one side assures the safety of the operator when he enters into the booth and the system is working, on the other side it allows their thermal radiations to invest the upper parts of the painted masses located inside the painting/drying room. In fact, the upper parts of the painted masses are directly invested by the air flow 8, coming from the filtering ceiling, so they tend to maintain lower temperatures and consequently they require a higher thermal irradiation.
  • All of these electrical radiant panels at high temperature 2 can be activated, or only some of them, or all of them can be partly activated.
  • They are normally combined with a divider system, by means of which the thermal effect they produce and, therefore, the thermal power of the radiation they generate are regulated.
  • The present spray booth has therefore a painting/drying room where the painted surfaces of the masses at its inside are heated by irradiation of thermal energy produced by electrical radiant panels of two different kinds, the first one with diffused heat the second ones with high temperature.
  • During the realization the combination of the electrical radiant panels of the two types, with which the irradiation heating of the surfaces of the masses located inside the booth has to be carried on, can be carried out with different modalities and schemes, keeping steady the logic at the base of this invention, defined by the following claims.

Claims (6)

  1. A spray booth comprising a painting/drying room with an electrical radiant heating, characterized in that said heating comprises a hybrid electrical heating including the combination of electrical radiant panels with diffused heat (1) and supplementary electrical radiant panels at high temperature (2), the first ones being distributed on the perimetrical walls (3) of the painting/drying room, the second ones being placed towards the top of said walls (3) at heights from the floor (4) that can not be reached by the operator during a normal working process.
  2. The spray booth, as claimed in claim 1, characterized in that the electrical radiant panels with diffused heat (1) are intercalated with illumination panels and/or units (5).
  3. The spray booth, as claimed by claim 1, characterized in that the electrical radiant panels at high temperature (2) realize oblique surfaces, from the top of the side walls (3) to the filtering ceiling (9).
  4. The spray booth, as claimed in claim 1, characterized in that the electrical radiant panels at high temperature (2) have the high temperature element or elements (6) protected by a grate (7) orientated towards the internal of the painting/drying room.
  5. The spray booth, as claimed in claim 1, characterized in that the electrical panels at high temperature (2) are combined with a divider system that regulates the thermal power of the radiation generated by said electrical panels at high temperature (2) to regulate the thermal effect they produce.
  6. Use of a spray booth, as claimed in any one of the previous claims, whereby painted surfaces of the masses placed inside the painting/drying room are heated by irradiation with thermal energy produced by the electrical radiant panels with diffused heat (1) and by the electrical radiant panels at high temperature (2).
EP05425387A 2004-06-01 2005-05-30 Spray booth with hybrid electrical heating Active EP1602413B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000009U ITAR20040009U1 (en) 2004-06-01 2004-06-01 HYBRID ELECTRIC HEATING PAINTING BOOTH
ITAR20040009U 2004-06-01

Publications (3)

Publication Number Publication Date
EP1602413A2 EP1602413A2 (en) 2005-12-07
EP1602413A3 EP1602413A3 (en) 2007-09-12
EP1602413B1 true EP1602413B1 (en) 2013-02-13

Family

ID=34943212

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05425387A Active EP1602413B1 (en) 2004-06-01 2005-05-30 Spray booth with hybrid electrical heating

Country Status (3)

Country Link
EP (1) EP1602413B1 (en)
ES (1) ES2401133T3 (en)
IT (1) ITAR20040009U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20120045A1 (en) * 2012-01-31 2013-08-01 Coiro S R L Correggimi PAINTING CABIN
CN106000803A (en) * 2016-07-12 2016-10-12 无锡顺达智能自动化工程股份有限公司 Improved station sealing structure
IT201700097884A1 (en) * 2017-08-31 2019-03-03 Salvatore Morale DRYING DEVICE FOR PAINTED PRODUCTS
US20200333072A1 (en) * 2017-08-31 2020-10-22 Salvatore MORALE A drying device for painting products
DE102020201705A1 (en) * 2020-02-11 2021-08-12 Dürr Systems Ag Temperature control system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2091858B (en) * 1980-12-11 1984-09-26 Infraroedteknik Ab Surface treatment of objects
US4621187A (en) 1985-02-01 1986-11-04 Petro Jr William A Paint spraying and curing booth
US4943447A (en) 1986-09-08 1990-07-24 Bgk Finishing Systems, Inc. Automotive coating treating process
CA2012161C (en) 1989-06-12 1999-03-16 Yoshio Tomioka Apparatus for painting
US5042420A (en) * 1989-11-27 1991-08-27 Binks Manufacturing Company Trapezoidal painting structure
US5282145A (en) 1991-08-29 1994-01-25 Ronald Lipson Method of repair paint curing for production lines and apparatus
GB9626965D0 (en) 1996-12-27 1997-02-12 Pentara Commercial Enterprises Apparatus for drying paint
US5836085A (en) 1997-07-10 1998-11-17 Ben-Ezra; Joshua S. Paint-spraying and curing booth with fired radiant heaters
DE29811072U1 (en) 1998-06-20 1998-08-27 Burkamp, Martin, 59755 Arnsberg Arrangement for drying painted surfaces of objects
IT1312433B1 (en) * 1999-05-14 2002-04-17 Cadif Srl PANEL WITH ELECTRO-THERMAL FABRIC, HIGH ELECTRIC INSULATION
US6113764A (en) 1999-05-26 2000-09-05 Ppg Industries Ohio, Inc. Processes for coating a metal substrate with an electrodeposited coating composition and drying the same
US6588916B2 (en) 2001-08-27 2003-07-08 Honda Giken Kogyo Kabushiki Kaisha Paint booth lighting fixture

Also Published As

Publication number Publication date
ES2401133T3 (en) 2013-04-17
ITAR20040009U1 (en) 2004-09-01
EP1602413A2 (en) 2005-12-07
EP1602413A3 (en) 2007-09-12

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