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EP2535117A1 - Dispositif de séchage - Google Patents

Dispositif de séchage Download PDF

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Publication number
EP2535117A1
EP2535117A1 EP11004913A EP11004913A EP2535117A1 EP 2535117 A1 EP2535117 A1 EP 2535117A1 EP 11004913 A EP11004913 A EP 11004913A EP 11004913 A EP11004913 A EP 11004913A EP 2535117 A1 EP2535117 A1 EP 2535117A1
Authority
EP
European Patent Office
Prior art keywords
dryer
drying device
heating unit
hot air
air
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Withdrawn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
EP11004913A
Other languages
German (de)
English (en)
Inventor
Andreas Ritterbach
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.)
Rippert Besitzgesellschaft Mbh & Co KG
Original Assignee
Rippert Besitzgesellschaft Mbh & Co KG
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 Rippert Besitzgesellschaft Mbh & Co KG filed Critical Rippert Besitzgesellschaft Mbh & Co KG
Priority to EP11004913A priority Critical patent/EP2535117A1/fr
Publication of EP2535117A1 publication Critical patent/EP2535117A1/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Withdrawn legal-status Critical Current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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/30—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant
    • B05D2401/32—Form of the coating product, e.g. solution, water dispersion, powders or the like the coating being applied in other forms than involving eliminable solvent, diluent or dispersant applied as powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0254—After-treatment
    • B05D3/0272—After-treatment with ovens

Definitions

  • Corresponding drying devices usually have a recirculating air stream, which is heated to dry the coated objects in the dryer.
  • drying device or “dryer” is understood in particular also to mean a powder firing device or a powder firing kiln, which are used in the powder coating.
  • the powder coating is sprayed onto the workpiece as a powder and caused to adhere by electrostatic charging.
  • this powder is melted at a temperature between about 150 to 250 ° C.
  • the powder coating crosslinks or runs to form a continuous layer. Following this, this layer hardens.
  • the circulating air is heated.
  • the invention has for its object to provide a drying device for powder coating systems, which is suitable for all powder coating systems used and can be used energy-efficiently.
  • the direct heating of the drying or circulating air with the indirect heating of the same by means of heat exchangers such as heat exchangers combined in an advantageous manner.
  • heat exchangers such as heat exchangers
  • this direct possibility of circulating air heating can be supplemented by indirect heating or even completely replaced.
  • a switching device which selectively directs the air generated by a heating unit in the dryer and / or circulating air flow on the one hand and / or in an exhaust pipe on the other hand.
  • At least two switching positions are provided in the switching device, with which at least one optional operation is possible, with which the hot air, which is preferably generated by a burner in a combustion chamber, optionally the dryer or circulating air flow on the one hand or the exhaust pipe can perform. It is but also possible to provide the switching device with intermediate positions with which the amount of hot air that enters the dryer or in the exhaust pipe, can be varied.
  • a flap is preferably provided as a switching device, which is preferably designed as a double flap and configured so that it can partially or completely open or close the supply line to the dryer and / or circulating air flow on the one hand and the exhaust pipe on the other hand, so that the one The more the other one is closed, the more open the line becomes.
  • the switching device is controlled automatically, in particular a pneumatic or electrical operation is possible.
  • the central component is the dryer 4, in which coated components (not shown) are dried.
  • a circulating air flow U which introduces circulating air into the dryer 4 via a feed line 600.
  • a discharge line 500 the circulated air passed through the dryer 4 is removed again from the dryer and circulated via a blower 10.
  • a discharge line 200 may be provided be removed by means of the over a throttle valve 11 exhaust air 8 from the recirculating air stream U.
  • the extracted exhaust air 8 can then be replaced via a likewise provided supply line 300 for fresh air 9.
  • the circulating air stream U is heated by a heat exchanger (hereinafter also heat exchanger) 6, before it reaches the dryer 4 via the feed line 600.
  • a heat exchanger hereinafter also heat exchanger
  • hot air is used as the heat exchange medium, which is heated by a heating unit 3.
  • the heating unit 3 is formed by a burner 3b with connected combustion chamber 3a, in which the hot air is generated by the burner flame.
  • the hot air is passed in the heat exchanger 6 to the circulating air and thus heats the circulating air in an indirect way.
  • the guided through the heat exchanger 6 hot air passes via a line to a switching device 7, which has at least two switching positions 1 and 2 in the example shown.
  • the switching position 2 is used to divert the hot air into an exhaust pipe 400 and further into a chimney 5.
  • the other switching position 1 is used for direct introduction of the hot air into the dryer 4; either directly via the line 100 or via the line 100 'in the supply line 600 of the recirculating air stream U.
  • the switching device 7 can be set so that both paths 1, 2 are open. This can preferably be done so that is divided by the switching device 7, the supplied through the line 700 hot air stream in partial streams to the exhaust pipe 400 and the dryer 4 (via line 100 or 100 ').
  • the switching device 7 is preferably able to vary the guided to the dryer 4 hot air and possibly block completely, so that all the hot air is only used to heat the circulating air through the heat exchanger 6 and then passed to the exhaust pipe 400.
  • the switching device 7 may have one or more flaps, which are inserted into the lines and whose closed position is variable in order to change the amounts of air carried.
  • a defined stream of hot air can enter the dryer 4, so that e.g. the drying air for the dryer is composed of 10% hot air from the heating unit 3 and 90% circulating air.
  • the mentioned flap can be operated pneumatically.
  • the opening and closing of the flap or switching device can be automated and, if necessary, the hot air flow in the dryer 4 can be regulated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
EP11004913A 2011-06-16 2011-06-16 Dispositif de séchage Withdrawn EP2535117A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11004913A EP2535117A1 (fr) 2011-06-16 2011-06-16 Dispositif de séchage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11004913A EP2535117A1 (fr) 2011-06-16 2011-06-16 Dispositif de séchage

Publications (1)

Publication Number Publication Date
EP2535117A1 true EP2535117A1 (fr) 2012-12-19

Family

ID=44835767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11004913A Withdrawn EP2535117A1 (fr) 2011-06-16 2011-06-16 Dispositif de séchage

Country Status (1)

Country Link
EP (1) EP2535117A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966523A1 (de) * 1969-06-21 1973-07-05 Duerr O Fa Anlage zur oberflaechenbehandlung mit einer behandlungs- z.b. lacktrocknungskammer
GB2065865A (en) * 1979-11-14 1981-07-01 Duerr Innovation Gmbh Heat pumps in painting plant
CH629686A5 (en) * 1978-07-07 1982-05-14 Moeri Ag Paint spraying system and method for its operation
DE3326560A1 (de) * 1983-07-22 1985-02-07 LUTRO Luft- und Trockentechnik GmbH, 7022 Leinfelden-Echterdingen Farbspritz- und/oder trockenkabine
DE3542957A1 (de) * 1985-01-17 1986-07-17 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Spritzkabine, insbesondere zum automatischen lackieren von gegenstaenden
US5113600A (en) * 1989-09-14 1992-05-19 Binks Manufacturing Company Combination paint spray booth-drying oven with single air fan

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1966523A1 (de) * 1969-06-21 1973-07-05 Duerr O Fa Anlage zur oberflaechenbehandlung mit einer behandlungs- z.b. lacktrocknungskammer
CH629686A5 (en) * 1978-07-07 1982-05-14 Moeri Ag Paint spraying system and method for its operation
GB2065865A (en) * 1979-11-14 1981-07-01 Duerr Innovation Gmbh Heat pumps in painting plant
DE3326560A1 (de) * 1983-07-22 1985-02-07 LUTRO Luft- und Trockentechnik GmbH, 7022 Leinfelden-Echterdingen Farbspritz- und/oder trockenkabine
DE3542957A1 (de) * 1985-01-17 1986-07-17 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Spritzkabine, insbesondere zum automatischen lackieren von gegenstaenden
US5113600A (en) * 1989-09-14 1992-05-19 Binks Manufacturing Company Combination paint spray booth-drying oven with single air fan

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