EP1469267A2 - Echangeur de chaleur pour des fours de séchage de système de peinture - Google Patents

Echangeur de chaleur pour des fours de séchage de système de peinture Download PDF

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Publication number
EP1469267A2
EP1469267A2 EP04007197A EP04007197A EP1469267A2 EP 1469267 A2 EP1469267 A2 EP 1469267A2 EP 04007197 A EP04007197 A EP 04007197A EP 04007197 A EP04007197 A EP 04007197A EP 1469267 A2 EP1469267 A2 EP 1469267A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
air
tube sheet
burner
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.)
Withdrawn
Application number
EP04007197A
Other languages
German (de)
English (en)
Other versions
EP1469267A3 (fr
Inventor
Franco Neri
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.)
Geico SpA
Original Assignee
Geico SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geico SpA filed Critical Geico SpA
Publication of EP1469267A2 publication Critical patent/EP1469267A2/fr
Publication of EP1469267A3 publication Critical patent/EP1469267A3/fr
Withdrawn legal-status Critical Current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
    • F26B23/00—Heating arrangements
    • F26B23/02—Heating arrangements using combustion heating
    • F26B23/022—Heating arrangements using combustion heating incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure

Definitions

  • the present invention relates to a heat exchanger, specifically designed for painting system drying ovens.
  • the outlet air from a drying oven contains solvents and other polluting substances, and, accordingly, it cannot be discharged to the outside environment, without a proper processing operation.
  • the aim of the present invention is to provide a heat exchanger designed for improving the power recovery of the painting system, and specifically adapted to burn solvent materials coming from the drying oven.
  • the burner uses as burning air that air which is withdrawn from the ovens, recovering its heat and burning the solvent materials.
  • a main object of the present invention is to provide such a heat exchanger which is very efficient and reliable in operation.
  • Another object of the present invention is to provide such a heat exchanger which can also be applied to existing painting systems.
  • a heat exchanger specifically for painting system drying ovens, characterized in that said heat exchanger comprises an air stream burner supplied with a fuel gas which is mixed with recovery air coming from an oven, thereby providing a combustible mixture which is ignited, the ignited mixture being caused to pass inside a tube sheet arrangement, therethrough outside air to be heated and supplied to the oven is conveyed.
  • the heat exchanger according to the invention which has been generally indicted by the reference number 1, is used in a drying oven of a painting system, for example for painting motor vehicle, to which hot or heated air is supplied.
  • the heat exchanger 1 comprises an air stream burner 3, including a plurality of perforated plates 4, thereinto is conveyed a gas, methane or GPL to be mixed with recovery air coming from the oven, thereby providing a combustible mixture which is ignited by igniting electrodes.
  • the ignited mixture is caused to pass inside a tube sheet arrangement, comprising a plurality of tubes 5 having preferably an oval cross-section, therethrough is conveyed air coming from the outside or inside environment, to be heated and supplied to the drying oven.
  • the tube sheet assembly comprises two tube sheets, respectively indicated by the reference numbers 6 and 7, which are coupled in a series relationship, thereby causing the ignited mixture coming from the burner 3 to pass through the first tube sheet 6 and then the second tube sheet 7, to be finally discharged from a chimney or stack 18.
  • the air to be heated coming from the outside environment affects the second tube sheet arrangement 7, then the first tube sheet arrangement 6 and, heated to a set temperature, is supplied to the drying oven through a delivery duct 8.
  • Air to be heated is taken either from the outside environment or from the inside of the drying oven, by a centrifugal type of fan 9, and is supplied to the tube sheet arrangements through an air supplying duct 10.
  • the burner 3 is arranged in a duct, coupled to the drying oven so that the air stream is constituted by recovery air coming from the drying oven.
  • This air containing solvents removed from the painting materials, is burnt thereby eliminating said solvents, which are not discharged to the outside environment.
  • a thermally insulated channel 11 Downstream of the burner 3, a thermally insulated channel 11, arranged under the heat exchanger, supplies a first fume distributing plenum 12 for distributing the fumes through the tube sheet arrangement.
  • the temperature of the recovery air coming from the drying oven is of about 180°, this value being indicated by way of an indicative example.
  • the fumes from the stack are discharged at a temperature of about 230°C.
  • Air to be heated coming from the air fan has a temperature of about 180°C and, after having passed through the tube sheet arrangements, it is supplied to the drying oven at a temperature of about 230°C.
  • the invention provides a heat exchanger allowing to burn solvent materials entrained by outlet air coming from the drying oven, thereby preventing said solvent materials from polluting the environment, while providing a power recovery through the overall system.
  • the used materials, as well as the continent size and shapes can be any, according to requirements and the status of the art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)
EP04007197A 2003-04-15 2004-03-25 Echangeur de chaleur pour des fours de séchage de système de peinture Withdrawn EP1469267A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20030787 2003-04-15
ITMI20030787 ITMI20030787A1 (it) 2003-04-15 2003-04-15 Scambiatore di calore, particolarmente per forni di

Publications (2)

Publication Number Publication Date
EP1469267A2 true EP1469267A2 (fr) 2004-10-20
EP1469267A3 EP1469267A3 (fr) 2006-10-04

Family

ID=32894173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04007197A Withdrawn EP1469267A3 (fr) 2003-04-15 2004-03-25 Echangeur de chaleur pour des fours de séchage de système de peinture

Country Status (2)

Country Link
EP (1) EP1469267A3 (fr)
IT (1) ITMI20030787A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1801526A3 (fr) * 2005-12-23 2010-11-24 EISENMANN Anlagenbau GmbH & Co. KG Sécheur

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB652064A (en) * 1948-07-09 1951-04-18 Tyneside Foundry And Engineeri Improvements in and relating to air heaters
US2950098A (en) * 1958-04-22 1960-08-23 Catalytic Comb Corp Coating oven
DE1975176U (de) * 1967-08-03 1967-12-14 Eisenmann K G Maschb Ges Vorrichtung zum trocknen von fluechtige brennbare bestandteile abgebenden ueberzuegen.
US3437321A (en) * 1966-05-27 1969-04-08 B & K Machinery Int Ltd Regenerative paint drying system for continuous strip
US3462133A (en) * 1967-10-30 1969-08-19 Butler Manufacturing Co Gas burner for heating moving air
US3604824A (en) * 1970-04-27 1971-09-14 Universal Oil Prod Co Thermal incineration unit
DE1907714B1 (de) * 1969-02-15 1971-10-14 Duerr O Fa Anlage zur Oberflaechenbehandlung z.B.von lackierten Gegenstaenden mit einer Behandlung-z.B.Lacktrocknungskammer
DE1966523A1 (de) * 1969-06-21 1973-07-05 Duerr O Fa Anlage zur oberflaechenbehandlung mit einer behandlungs- z.b. lacktrocknungskammer
DE2412446A1 (de) * 1974-03-15 1975-09-18 Vits Maschinenbau Gmbh Trockner fuer eine durchlaufende warenbahn
US3936951A (en) * 1973-08-24 1976-02-10 Otto Durr Kg Method of and apparatus for heating circulating air in drying equipment
US4132007A (en) * 1977-08-17 1979-01-02 Voorheis James T Single burner heater and incinerator

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB652064A (en) * 1948-07-09 1951-04-18 Tyneside Foundry And Engineeri Improvements in and relating to air heaters
US2950098A (en) * 1958-04-22 1960-08-23 Catalytic Comb Corp Coating oven
US3437321A (en) * 1966-05-27 1969-04-08 B & K Machinery Int Ltd Regenerative paint drying system for continuous strip
DE1975176U (de) * 1967-08-03 1967-12-14 Eisenmann K G Maschb Ges Vorrichtung zum trocknen von fluechtige brennbare bestandteile abgebenden ueberzuegen.
US3462133A (en) * 1967-10-30 1969-08-19 Butler Manufacturing Co Gas burner for heating moving air
DE1907714B1 (de) * 1969-02-15 1971-10-14 Duerr O Fa Anlage zur Oberflaechenbehandlung z.B.von lackierten Gegenstaenden mit einer Behandlung-z.B.Lacktrocknungskammer
DE1966523A1 (de) * 1969-06-21 1973-07-05 Duerr O Fa Anlage zur oberflaechenbehandlung mit einer behandlungs- z.b. lacktrocknungskammer
US3604824A (en) * 1970-04-27 1971-09-14 Universal Oil Prod Co Thermal incineration unit
US3936951A (en) * 1973-08-24 1976-02-10 Otto Durr Kg Method of and apparatus for heating circulating air in drying equipment
DE2412446A1 (de) * 1974-03-15 1975-09-18 Vits Maschinenbau Gmbh Trockner fuer eine durchlaufende warenbahn
US4132007A (en) * 1977-08-17 1979-01-02 Voorheis James T Single burner heater and incinerator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1801526A3 (fr) * 2005-12-23 2010-11-24 EISENMANN Anlagenbau GmbH & Co. KG Sécheur

Also Published As

Publication number Publication date
EP1469267A3 (fr) 2006-10-04
ITMI20030787A1 (it) 2004-10-16

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