EP0315590B1 - Abkühl-Kammer zur Konvektionskühlung von flächenhaftem Gut - Google Patents

Abkühl-Kammer zur Konvektionskühlung von flächenhaftem Gut Download PDF

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Publication number
EP0315590B1
EP0315590B1 EP88810733A EP88810733A EP0315590B1 EP 0315590 B1 EP0315590 B1 EP 0315590B1 EP 88810733 A EP88810733 A EP 88810733A EP 88810733 A EP88810733 A EP 88810733A EP 0315590 B1 EP0315590 B1 EP 0315590B1
Authority
EP
European Patent Office
Prior art keywords
cooling chamber
chamber according
channel
ventilator
cooling
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.)
Expired - Lifetime
Application number
EP88810733A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0315590A2 (de
EP0315590A3 (de
Inventor
Bernard Hilge
Carl Kramer
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services Ltd
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 Alusuisse Lonza Services Ltd filed Critical Alusuisse Lonza Services Ltd
Priority to AT88810733T priority Critical patent/ATE100929T1/de
Publication of EP0315590A2 publication Critical patent/EP0315590A2/de
Publication of EP0315590A3 publication Critical patent/EP0315590A3/de
Application granted granted Critical
Publication of EP0315590B1 publication Critical patent/EP0315590B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • 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
    • F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
    • 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
    • F27D15/00—Handling or treating discharged material; Supports or receiving chambers therefor
    • F27D15/02—Cooling
    • 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
    • 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
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • F27B9/3011—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases arrangements for circulating gases transversally
    • 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
    • F27D2007/045—Fans

Definitions

  • the invention relates to a cooling chamber for the conventional cooling of flat material in arrangements with flowable gaps in a charging space, in particular so-called block batches made of semi-finished light metal products.
  • Such areal goods can be, for example, a plurality of layers of light metal bolts which are stacked on top of one another and which are subjected to the cooling process with an initial material temperature of 580 ° C.
  • the mass of such a batch can be 25 t and more.
  • 8,000,000 to 10,000,000 KJ (8-10 GJ) of heat energy must be dissipated.
  • cooling chamber in which air circulation is generated with the aid of fans.
  • cooling chambers a distinction is made between two basic types, namely cooling chambers that work in an open circuit and cooling chambers that use the principle of the closed circuit.
  • ambient air is blown onto the batch and then extracted from the cooling chamber, while in cooling chambers with a closed circuit, the air conveyed by the fan, after being removed from the cooling chamber, is usually a water-cooled heat exchanger serving cooler and then flows through the goods to be cooled.
  • reversing In order to achieve sufficient cooling uniformity and thus a homogeneous temperature distribution in the cooling chamber in these cooling processes, so-called “reversing” is used, that is, a reversal of the direction of flow of the blowing air. This reversal is effected almost exclusively by reversing the direction of rotation of the axial fan used as a flow drive.
  • this solution which is simple in terms of complexity, has a decisive disadvantage: a fan that is suitable for reversing the flow must not have a leading or a guide vane and must also have blades that are set at 45 °, so that the flow rate in both directions at least is approximately the same.
  • a cooling chamber for convection cooling of flat material in arrangements with flow-through gaps of the specified type finally emerges from DE-A-32 15 509.
  • a fan pushes the gas flow through the gaps in the flat material;
  • the direction of the gas flow can be controlled by cover plate-like slide plates.
  • the basic disadvantage of this device is that the flow through the interstices in the material takes place only on the pressure side of the fan, that is to say the charge from which the cooling air is blown. This blowing with the help of jets that pass through the gaps in the flat material results in locally very different cooling speeds, which are incompatible with the high requirements for uniform temperature distribution when cooling high-quality light metal batches after homogenization.
  • the invention is therefore based on the object of creating a cooling chamber for convection cooling of flat material in arrangements with flowable gaps, in particular of so-called block batches of light metal semi-finished products, of the type specified, in which the disadvantages mentioned above do not occur.
  • the advantages achieved with the invention are based on the fact that the spaces in the flat material are flowed through by a precisely defined partial flow of the air flow sucked in by the fan, and the material is thereby cooled, so that cooling can be precisely defined. Nevertheless, the entire flow rate is available on the fan, which means that the operating temperature of the fan can be kept within limits by mixing the blowing air with fresh air. This in turn enables the use of industrial fans with conventional storage and drive technology without the need to use special embodiments of high-temperature fans.
  • additional flaps can be installed in the side walls.
  • the cooling chamber shown in the figures receives a block batch 12 which, as shown in FIG. 1, consists of a stack of several layers of light metal bolts.
  • the block batch 12 rests on a conventional base 14, the height of which can be adjusted by a schematically indicated adjusting device.
  • the block batch 12 is surrounded by a heat-insulated housing 16 with side walls 16 a and a false ceiling 16 b, which has such a distance from the side surfaces of the block batch 12 that between the side walls 16 a of the housing 16 and the block batch 12 circulation channels 13 a, 13 b arise for the supply and discharge of the blowing air.
  • a powerful axial fan 18 with a guide wheel is arranged vertically and symmetrically above the block batch 12, that is to say above the false ceiling 16 b, which conveys into a blow-out channel 20 arranged vertically above the axial fan 18.
  • This blow-out channel 20 can be completely or partially closed by a shut-off and regulating flap 22 designed as a louver flap.
  • the axial fan 18 is connected to a downpipe 32 with a left leg 32 a, a right leg 32 b and a collecting pipe 32 c.
  • a shut-off and regulating flap 34 a, 34 b In each leg 32 a, 32 b there is a shut-off and regulating flap 34 a, 34 b.
  • the legs 32 a, 32 b face the channels 13 a, 28 a and 13 b, 28 b, while the collecting tube 32 c is connected to the axial fan 18.
  • swivel flaps 36 a, 36 b are provided, which are located approximately at the level of the false ceiling 16 b and the channels 13 a, 13 b on the two sides of the block batch 12 between their side walls and the side walls 16 a of the housing 16 open or close.
  • swing flaps 36 a, 36 b are formed by sections of the insulated side walls 16 a.
  • the cooling medium air is sucked in by the axial fan 18 through the spaces in the block batch 12, the corresponding flow direction being predetermined by setting the respective louvre flaps. Since the shape of the flow cross-sections tapers continuously towards the block charge 12, jet-like impacts and thus uneven cooling are avoided.
  • the blind flap 34 a located in the right leg 32 a of the downpipe 32 is closed and the blind flap located in the left leg 32 a 34 b open.
  • the louver flap 30 a in the inflow channel 28 a must be opened and the louver flap 30 in the inflow channel 28 b must be closed.
  • the air sucked in by the axial fan 18 now flows through the inflow duct 28 a in the direction of the arrows on the right side of the block batch 12 through the duct 13 a downwards, through the spaces in the block batch 12, on the left side of the Block batch 12 through the channel 13 b upwards and then through the left leg 32 b of the downpipe 32 and the collecting tube 32 c to the axial fan 18, which conveys the air into the blow-out channel 20.
  • the extracted air stream can be specifically mixed with fresh air in order to achieve certain temperature effects.
  • the operating temperature of the fan 18 can thereby be kept within limits.
  • the flaps 36 a, 36 b are pivoted into the channels 13 a, 13 b and thus close the housing 16. With appropriate insulation, the temperature of the block charge 12 hardly changes during such a holding phase, so that the additional installation of a heater is unnecessary in almost all cases.
  • the cooling chamber 10 can also be operated in a closed circuit. This is particularly expedient if the block batch 12 has to be kept at a certain temperature in the holding phases.
  • the inlet cross sections of the two legs 32 a, 32 b of the downpipe 32 and the cross sections of the inflow channels 28 a, 28 b and the channels 13 a, 13 b have a rectangular shape; the long rectangular axis corresponds to the zone length, for which a fan is provided; the conversion from the rectangular cross section to the circular suction cross section of the axial fan 18 takes place in the collecting pipe 32 c of the downpipe 32.
  • the channels 13 a, 13 b on the two sides of the block batch 12 are provided with flow control devices.
  • soundproofing devices can be provided in the blow-out duct.
  • the fan 18 is designed as an axial fan; however, a radial fan can also be used in the same way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Furnace Details (AREA)
EP88810733A 1987-11-03 1988-10-26 Abkühl-Kammer zur Konvektionskühlung von flächenhaftem Gut Expired - Lifetime EP0315590B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88810733T ATE100929T1 (de) 1987-11-03 1988-10-26 Abkuehl-kammer zur konvektionskuehlung von flaechenhaftem gut.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873737254 DE3737254A1 (de) 1987-11-03 1987-11-03 Abkuehl-kammer zur konvektionskuehlung von flaechenhaftem gut
DE3737254 1987-11-03

Publications (3)

Publication Number Publication Date
EP0315590A2 EP0315590A2 (de) 1989-05-10
EP0315590A3 EP0315590A3 (de) 1991-05-22
EP0315590B1 true EP0315590B1 (de) 1994-01-26

Family

ID=6339674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88810733A Expired - Lifetime EP0315590B1 (de) 1987-11-03 1988-10-26 Abkühl-Kammer zur Konvektionskühlung von flächenhaftem Gut

Country Status (5)

Country Link
EP (1) EP0315590B1 (no)
AT (1) ATE100929T1 (no)
CA (1) CA1329489C (no)
DE (2) DE3737254A1 (no)
NO (1) NO172364C (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4337533A1 (de) * 1993-11-05 1995-05-11 Schmitz & Apelt Loi Industrieo Industrieofen zur Wärmebehandlung von Einsatzgut, das zu einer Charge in einem Wärmebehandlungsraum angeordnet ist
DE102008008648B3 (de) * 2008-02-11 2009-07-16 Andreas Breloer Vorrichtung zur Abkühlung eines Werkstückes
CN109425231B (zh) * 2017-08-29 2024-02-13 中冶长天国际工程有限责任公司 一种烧结矿抽风式循环冷却系统及其工艺

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619341A (en) * 1947-09-26 1952-11-25 Sunbeam Corp Heat-treating furnace
BE850200A (fr) * 1977-01-07 1977-05-02 Cobelcomex Four a circulation d'air de convection
DE3035032C1 (de) * 1980-09-17 1982-08-26 Stahlwerke Röchling-Burbach GmbH, 6620 Völklingen Verfahren zum Waermebehandeln von Drahtbunden und Durchlaufofen zur Durchfuehrung des Verfahrens
DE3049162A1 (de) * 1980-12-24 1982-07-15 Keramikindustrieanlagen W.Strohmenger GmbH & Co KG, 8524 Neunkirchen Trocknungsvorrichtung fuer keramikwaren
US4395233A (en) * 1981-06-22 1983-07-26 G. S. Blodgett Co., Inc. Dual flow heating apparatus
DE3215509A1 (de) * 1982-04-26 1983-10-27 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vakuum-kammerofen
DE3322386A1 (de) * 1983-06-22 1985-01-10 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Verfahren zur kuehlung einer charge nach einer waermebehandlung und ofenanlage zur durchfuehrung des verfahrens
DE3441289A1 (de) * 1984-04-24 1985-10-31 Paul Schneider Rohrleitungsbau GmbH, 8633 Rödental Verfahren zur physikalischen und/oder chemischen beeinflussung und/oder behandlung von gestapeltem oder aufgeschuettetem gut mittels stroemender medien

Also Published As

Publication number Publication date
NO884857D0 (no) 1988-11-01
NO172364C (no) 1993-07-14
DE3737254A1 (de) 1989-05-18
NO172364B (no) 1993-03-29
NO884857L (no) 1989-05-05
ATE100929T1 (de) 1994-02-15
EP0315590A2 (de) 1989-05-10
CA1329489C (en) 1994-05-17
EP0315590A3 (de) 1991-05-22
DE3887452D1 (de) 1994-03-10

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