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WO1994011537A1 - Four industriel - Google Patents

Four industriel Download PDF

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Publication number
WO1994011537A1
WO1994011537A1 PCT/EP1993/003141 EP9303141W WO9411537A1 WO 1994011537 A1 WO1994011537 A1 WO 1994011537A1 EP 9303141 W EP9303141 W EP 9303141W WO 9411537 A1 WO9411537 A1 WO 9411537A1
Authority
WO
WIPO (PCT)
Prior art keywords
hood
industrial furnace
water
cooling water
outer edge
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.)
Ceased
Application number
PCT/EP1993/003141
Other languages
German (de)
English (en)
Inventor
Georg Velten
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.)
LOI ESSEN INDUSTRIEOFENANLAGEN
Original Assignee
LOI ESSEN INDUSTRIEOFENANLAGEN
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 LOI ESSEN INDUSTRIEOFENANLAGEN filed Critical LOI ESSEN INDUSTRIEOFENANLAGEN
Publication of WO1994011537A1 publication Critical patent/WO1994011537A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/673—Details, accessories, or equipment peculiar to bell-type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/045—Furnaces with controlled atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
    • F27B9/08—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated through chamber walls
    • F27B9/082—Muffle furnaces
    • F27B9/088—Series of separate muffles conveyed through the furnace
    • 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
    • F27D9/00—Cooling of furnaces or of charges therein
    • 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
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Definitions

  • the invention relates to an industrial furnace with a fixed base body for receiving an annealing material, with a movable protective hood arranged on the base body and enclosing the annealing material in a gas-tight manner, the protective hood having a base element which rests with its contact surface on the base body.
  • the protective hood ensures that the furnace atmosphere does not come into contact with the outside atmosphere during the heating or cooling process.
  • the protective hood is surrounded by a heating hood.
  • a cooling hood is fitted instead of the heating hood. If necessary, water is sprayed onto the protective hood during the cooling process, which runs off on the protective hood and the cooling hood.
  • the base element of the protective hood expediently has a circumferential collecting channel with a drain for the cooling water.
  • the heating hood is provided with an all-round heating hood seal.
  • the residual water has the further disadvantage that the heating hood seal lying in the collecting duct when the heating hood is fitted comes into contact with the liquid. The liquid penetrating into the seal causes hardening, so that the flexibility is impaired and the sealing effect deteriorates.
  • the invention is accordingly based on the object to design an industrial furnace of the type mentioned in such a way that an accumulation of residual water on the base element of the protective hood is avoided.
  • the industrial furnace according to the invention is characterized in that the base element on the side opposite the support surface has a roof-like drain surface with a slope towards an outer edge
  • the design of the drainage surface according to the invention ensures that the cooling water sprayed on during the cooling process drains off completely and thus no damage to the glow material can take place when the protective hood is lifted off.
  • a further important advantage to be mentioned is that, when the heating hood is fitted, the one resting on the drainage surface The heating hood seal is not exposed to any residual water and the hardening of the seal caused by it does not occur. Thus, the seal retains its flexibility and thus the sealing effect.
  • the floor element according to the invention can be manufactured simply and inexpensively
  • the support side has a circumferential ab ⁇ ßkante, so that the water adhering to the support surface by adhesive forces drips on this edge at the latest and does not reach the basic body
  • the base element can be pressed onto the base body by means of a pressing device. Due to the design according to the invention such that the pressing device rests punctually on the drain surface by means of several support bolts, the cooling water located on the drain surface is spaced apart from one another arranged support bolt can run freely
  • the basic body is surrounded by a collecting duct which has a drainage device and is arranged below the outer edge.
  • the cooling water dripping from the base element is collected in the collecting duct and drained off via the outlet device
  • the accompanying drawing shows a schematic partial section through the support area of the protective hood of an industrial furnace as an exemplary embodiment.
  • the industrial furnace has a base body 1 and a protective hood 2.
  • the basic body 1 is fixedly arranged on a base 3.
  • the seal between the protective hood 2 and the base body 1 takes place in the usual manner by means of a seal 5 arranged in the base body 1.
  • the protective hood 2 is composed essentially of a cylindrical hood element 6 and an annular base element 7.
  • the latter has a roof-like drainage surface 8 with a slope to an outer edge 9 on the side opposite the support surface 4. This is rounded and forms the transition from the drainage surface 8 to a substantially vertical side wall 10.
  • the rounded outer edge 9 promotes the drainage of the cooling water from the drainage surface 8.
  • a tear-off edge 12 is formed. This prevents the cooling water adhering to the support surface 4 by adhesive forces from reaching the base body 1.
  • the cooling water (not shown), which runs on the hood element 6 on the outside and on the inside of a cooling hood 13 on the inside in the direction of the bottom element 7, reaches the drainage surface 8 and runs from it in the direction of the outer edge 9. Then it runs along the side wall 10 and drips either directly from the side wall 10 or only at the tear-off edge 12.
  • the cooling water is collected in a collecting duct 14 arranged under the side wall 10 or the tear-off edge 12 on the substrate 3.
  • the cooling water collected in the collecting duct 14 can be drained off via a drainage device 15.
  • the base element 7 is pressed onto the base body 1 by means of an annular pressing device 16 arranged in the region of the outer edge 9 for the purpose of a gas-tight seal.
  • the pressing device 16 lies only point-wise on the run-off surface 8 with its support brackets 17 designed as spherical caps.
  • the cooling water can run freely between the support bolts 17 which are arranged at a distance from one another.
  • the hood element 6 can have a conical, spherical, elliptical or box-shaped body shape with a corresponding base element 7.
  • the base element 7 instead of the horizontally formed support surface 4 shown in the exemplary embodiment, this could also have a roof-like inclination, for example, so that the drain surface 8 and the storage surface 4 are arranged essentially parallel to one another.
  • a side wall 10 is dispensed with, so that the drainage surface 8 forms an acute angle with the horizontally running support surface 4.
  • the base element can also be manufactured so that it has a cavity inside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Dans un four à recuire à hotte, l'eau de refroidissement vaporisée sur la hotte de protection (2) pendant le refroidissement par vaporisation arrive dans un canal collecteur (14) intégré dans le fond (7) de la hotte de protection (2) puis est évacuée. Souvent, de l'eau résiduelle demeure cependant dans le canal collecteur (14), elle en sort lorsqu'on soulève la hotte de protection (2) et goutte sur le matériau recuit. La nouvelle hotte de protection (2) doit être conçue de manière à ce que de l'eau résiduelle ne puisse stagner sur le fond (7). Afin que l'eau de refroidissement s'écoule complètement, le fond (7) comporte sur le côté qui fait face à la surface d'appui (4), sur une surface d'écoulement (8) en forme de toit, avec une déclivité en direction d'une arête d'écoulement (9). Une fois parvenue sur la surface d'appui (4), l'eau de refroidissement s'en écoule. L'eau passe ensuite le long d'une paroi latérale (10) et s'en écoule en dégouttant. L'eau de refroidissement qui dégoutte est recueillie dans un canal collecteur (14) et est évacuée.
PCT/EP1993/003141 1992-11-14 1993-11-10 Four industriel Ceased WO1994011537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9215523U DE9215523U1 (de) 1992-11-14 1992-11-14 Industrieofen
DEG9215523.5U 1992-11-14

Publications (1)

Publication Number Publication Date
WO1994011537A1 true WO1994011537A1 (fr) 1994-05-26

Family

ID=6886037

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/003141 Ceased WO1994011537A1 (fr) 1992-11-14 1993-11-10 Four industriel

Country Status (2)

Country Link
DE (1) DE9215523U1 (fr)
WO (1) WO1994011537A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9215523U1 (de) * 1992-11-14 1993-01-07 Loi Essen Industrieofenanlagen GmbH, 4300 Essen Industrieofen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199853A (en) * 1962-04-25 1965-08-10 Porter Co Inc H K Bell-type annealing furnace and method of sealing same
DE1204246B (de) * 1955-10-24 1965-11-04 Lee Wilson Glockenofen zur Waermebehandlung von in Rollenform aufgewickelten Draehten, Stangen od. dgl.
FR1552877A (fr) * 1967-08-18 1969-01-10
DE3939383A1 (de) * 1989-11-29 1991-06-06 Btf Edelstahlverarbeitung Gmbh Kuehleinrichtung fuer dichtungsanordnungen von vorrichtungen zur waermebehandlung, insbesondere zum gluehen, von werkstuecken unter schutzgasatmosphaere
DE9215523U1 (de) * 1992-11-14 1993-01-07 Loi Essen Industrieofenanlagen GmbH, 4300 Essen Industrieofen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1204246B (de) * 1955-10-24 1965-11-04 Lee Wilson Glockenofen zur Waermebehandlung von in Rollenform aufgewickelten Draehten, Stangen od. dgl.
US3199853A (en) * 1962-04-25 1965-08-10 Porter Co Inc H K Bell-type annealing furnace and method of sealing same
FR1552877A (fr) * 1967-08-18 1969-01-10
DE3939383A1 (de) * 1989-11-29 1991-06-06 Btf Edelstahlverarbeitung Gmbh Kuehleinrichtung fuer dichtungsanordnungen von vorrichtungen zur waermebehandlung, insbesondere zum gluehen, von werkstuecken unter schutzgasatmosphaere
DE9215523U1 (de) * 1992-11-14 1993-01-07 Loi Essen Industrieofenanlagen GmbH, 4300 Essen Industrieofen

Also Published As

Publication number Publication date
DE9215523U1 (de) 1993-01-07

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