EP1485207A1 - Dispositif pour exposer de fa on homogene une surface plane d'une piece a un gaz chaud - Google Patents

Dispositif pour exposer de fa on homogene une surface plane d'une piece a un gaz chaud

Info

Publication number
EP1485207A1
EP1485207A1 EP03709615A EP03709615A EP1485207A1 EP 1485207 A1 EP1485207 A1 EP 1485207A1 EP 03709615 A EP03709615 A EP 03709615A EP 03709615 A EP03709615 A EP 03709615A EP 1485207 A1 EP1485207 A1 EP 1485207A1
Authority
EP
European Patent Office
Prior art keywords
nozzles
nozzle
gas
homogeneous
deflection
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.)
Granted
Application number
EP03709615A
Other languages
German (de)
English (en)
Other versions
EP1485207B1 (fr
Inventor
Dirk Menzler
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.)
Otto Junker GmbH
Original Assignee
Otto Junker GmbH
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 Otto Junker GmbH filed Critical Otto Junker GmbH
Publication of EP1485207A1 publication Critical patent/EP1485207A1/fr
Application granted granted Critical
Publication of EP1485207B1 publication Critical patent/EP1485207B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/005—Nozzles or other outlets specially adapted for discharging one or more gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces

Definitions

  • the invention relates to a device for uniformly acting on a flat surface of a workpiece with a heated gas, wherein an occupied with nozzles, parallel to the flat surface extending and provided with openings for the nozzle nozzle bottom is provided.
  • Such devices are used, for example, to heat coils of coils wound into coils.
  • the highest possible heat transfer is desired, so that the treatment time is as short as possible.
  • excessive heating of individual areas, in particular the strip edges of coils should be avoided. It follows that the most favorable arrangement is to be found, which allows a uniform and high heat transfer possible.
  • a device of the type mentioned is described for example in DE 196 50 965.
  • This has a flat nozzle bottom with nozzle openings, which directs the respective emerging gas jet inclined to the surface of the workpiece on this.
  • the nozzles are grouped together and aligned in their direction of deflection so that the projection of the jets of two adjacent nozzles of a group forms an angle resulting from the division of 360 ° by the number of nozzles associated with a group.
  • a disadvantage of this arrangement is in particular in the long beam path, which results from the inclination of the jet axis of a single nozzle relative to the normal to the nozzle bottom of a group and has a large decrease in the heat transfer with increasing distance from the nozzle bottom result.
  • the object of the invention is to provide a device of the type mentioned, which significantly reduces the heat transfer loss occurring over known devices of the relevant type and increases the uniformity of the heat distribution.
  • nozzles are each tubular, that in them a gas helically leading deflector is arranged and that the nozzles are normal to the surface to be acted upon.
  • the device according to the invention can be embodied such that the deflection devices are formed from one or more metal strips which are each formed from one or more evenly distributed over the circumference of the nozzle, extending helically through the nozzle metal strip whose width adapted to the radius of the nozzle and that the winding at n metal strips extends at least over 360 ° / n, so that the projection of the deflection completely covers the cross section of the respective nozzle.
  • the radiation influence of a heating device arranged on the inflow side of the nozzle base can thus be excluded.
  • the jet of a nozzle can be advantageously influenced if the deflection device has at least two coiled flow channels.
  • An advantageous distribution of the nozzles on the nozzle bottom is obtained if the nozzles are arranged equidistantly on normal straight lines and the turns of the juxtaposed on a common line adjacent nozzles are opposite.
  • the thus adjacent gas jets are given a direction which promotes the uniformity of the gas jet distribution and thus the heating of the surface to be flowed significantly.
  • the deflection devices can advantageously extend over the entire length of a nozzle, so that the rotation over the greatest possible length is thus impressed on the respectively passing gas jet.
  • the nozzles are preferably arranged on the outflow side of the nozzle base, but can sit on the inflow side in specific applications.
  • FIG. 1 shows a horizontal section through an oven, in which the areas of the material to be acted upon by the hot gas are blown from two opposite sides,
  • FIG. 2 shows a perspective view of a tubular nozzle in which a deflection device is arranged from two metal strips
  • Fig. 3 the flow of the gas between the nozzles and the surface to be acted upon the goods.
  • Fig. 1 shows a furnace 1, in which the surfaces to be acted upon 2 of the goods are blown over the tubular nozzle 3 formed.
  • hot gas is taken from a fan 4 from the furnace chamber and fed to the attached to the downstream side of the nozzle bottom 5 nozzles 3 on the inflow side 7 of the nozzle bottom 5.
  • the heating required for the heating of the gas is not shown.
  • Fig. 2 shows an example of a nozzle 3 according to the invention with a circular cross-section.
  • a deflection device 6 is mounted over the entire length, which in this case consists of two radially penetrating strips of material, so that the interior of the nozzle is divided into four separate flow channels.
  • the deflection device 6 is formed helically to the axis of the nozzle, extending over the entire length of the nozzle and is rotated by 90 °. The gas flowing through it is given a twist. A substantially rectilinear flow is thus excluded.
  • the nozzles 3 show the flow path of the gas between the nozzle bottom 5 and the surface 2 to be acted upon.
  • the nozzles 3 are arranged on the downstream side of the nozzle bottom 5 and normal to the surface 2 to be acted upon.
  • the direction of flow of the gas is indicated by the arrows.
  • the gas is aligned by the deflection device 6. This causes the cross-sectional area of the gas jet in the propagation direction to increase.
  • the increase in the cross-sectional area depends on the swirl applied to the gas in the deflection device, so that the impact area of a jet can be determined via it. After the impact of the jet on the surface 2, the gas flows back between the nozzles 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Nozzles (AREA)
  • Gas Burners (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP03709615A 2002-03-19 2003-02-14 Dispositif pour exposer de fa on homogene une surface plane d'une piece a un gaz chaud Expired - Lifetime EP1485207B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10212234 2002-03-19
DE10212234A DE10212234A1 (de) 2002-03-19 2002-03-19 Vorrichtung zur gleichmäßigen Beaufschlagung einer planen Fläche eines Werkstücks mit einem erhitzten Gas
PCT/DE2003/000454 WO2003078072A1 (fr) 2002-03-19 2003-02-14 Dispositif pour exposer de façon homogene une surface plane d'une piece a un gaz chaud

Publications (2)

Publication Number Publication Date
EP1485207A1 true EP1485207A1 (fr) 2004-12-15
EP1485207B1 EP1485207B1 (fr) 2006-06-14

Family

ID=27815783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03709615A Expired - Lifetime EP1485207B1 (fr) 2002-03-19 2003-02-14 Dispositif pour exposer de fa on homogene une surface plane d'une piece a un gaz chaud

Country Status (8)

Country Link
US (1) US20060049556A1 (fr)
EP (1) EP1485207B1 (fr)
AT (1) ATE329694T1 (fr)
BR (1) BR0308571A (fr)
CA (1) CA2479598A1 (fr)
DE (2) DE10212234A1 (fr)
ES (1) ES2266787T3 (fr)
WO (1) WO2003078072A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150099615A1 (en) * 2013-10-04 2015-04-09 Berry Plastics Corporation Container-forming process and machine
DE102013111886A1 (de) * 2013-10-29 2015-04-30 Ventilatorenfabrik Oelde Gmbh Verfahren und Vorrichtung zum Trocknen einer Materialbahn
CN107131720A (zh) * 2017-06-28 2017-09-05 广西德金烘干设备有限公司 农副产品烘干装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800380C (de) * 1948-10-02 1950-11-02 Paul Lechler Fa Mehrfachduese
CA1165525A (fr) * 1981-02-12 1984-04-17 Jobst U. Gellert Manchon chauffe de filiere a lame spirale fixe
DE3440901A1 (de) * 1983-12-30 1985-07-11 VEB Metalleichtbaukombinat, DDR 7030 Leipzig Anordnung zur feinzerstaeubung von fluessigkeiten
DE9201085U1 (de) * 1992-01-30 1992-04-09 SUET Saat- und Erntetechnik GmbH, 3440 Eschwege Vorrichtung zur reproduzierbar exakten Dosier-Verteilung einer geringen, vorgewählten Flüssigkeitsmenge auf eine Fläche
DE4333519A1 (de) * 1993-10-01 1995-04-06 Bosch Gmbh Robert Lochkörper
US5513976A (en) * 1994-04-13 1996-05-07 Caco Pacific Corporation Nozzle for heating and passing a fluid into a mold
AT402507B (de) * 1995-10-19 1997-06-25 Ebner Peter H Anlage zur wärmebehandlung von metallischem glühgut
DE19650965C1 (de) * 1996-12-07 1998-08-13 Kramer Carl Vorrichtung zur gleichmäßigen Beaufschlagung einer planen Oberfläche eines Werkstückes mit einem Fluid
TW404982B (en) * 1997-03-14 2000-09-11 Nippon Steel Corp A heat treatment apparatus for a steel sheet by a gas jet system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03078072A1 *

Also Published As

Publication number Publication date
ES2266787T3 (es) 2007-03-01
DE10212234A1 (de) 2003-10-09
US20060049556A1 (en) 2006-03-09
WO2003078072A1 (fr) 2003-09-25
ATE329694T1 (de) 2006-07-15
CA2479598A1 (fr) 2003-09-25
DE50303829D1 (de) 2006-07-27
BR0308571A (pt) 2005-01-04
EP1485207B1 (fr) 2006-06-14

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