EP0315590A2 - Chambre de refroidissement par convection de matériaux présentant des surfaces - Google Patents
Chambre de refroidissement par convection de matériaux présentant des surfaces Download PDFInfo
- Publication number
- EP0315590A2 EP0315590A2 EP88810733A EP88810733A EP0315590A2 EP 0315590 A2 EP0315590 A2 EP 0315590A2 EP 88810733 A EP88810733 A EP 88810733A EP 88810733 A EP88810733 A EP 88810733A EP 0315590 A2 EP0315590 A2 EP 0315590A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling chamber
- chamber according
- fan
- shut
- flaps
- 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
Links
Images
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 particular of so-called block batches of light metal semi-finished products, of the type specified in the preamble of claim 1.
- 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 thermal energy must be dissipated in the first hours of the cooling process.
- cooling chamber in which air circulation is generated with the aid of fans.
- cooling chambers 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.
- DE-OS 30 49 162 Another solution known from DE-OS 30 49 162 is to direct the blowing air onto the charge by means of a fan and to change the direction of the air flow by means of an adjustment flap.
- a fan a fan
- an adjustment flap a device that changes the direction of the air flow by means of an adjustment flap.
- a cooling chamber for convection cooling of flat material in arrangements with flow-through gaps of the specified type finally emerges from DE-OS 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 not compatible 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 spaces, 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.
- a device which also ensures a very uniform temperature distribution over the entire material to be cooled if extremely large material masses have to be treated.
- 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, as a result of which the cooling can be precisely defined. Nevertheless, the entire flow rate is available on the fan, so 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 having to use special embodiments of high-temperature fans.
- the material By arranging the material on the suction side of the fan, a uniform flow through the spaces in the material is achieved; the direction of flow can be changed as desired using the flaps. This is a great advantage in comparison with devices in which the direction of rotation of the fan has to be changed, since when the direction of rotation of the fan changes, the fan has to be started up, braked and restarted, which is the case with permanent operation drove to considerable design and wear problems. Finally, with the device according to the invention, the gaps in the material can also be flowed through in a closed circuit, which has proven to be extremely advantageous, particularly in the case of holding phases.
- Additional special flaps can be installed in the side walls for special requirements, for example if holding times at certain temperatures are to be achieved with such a cooling chamber.
- 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.
- a cooling medium generally air
- 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 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.
- At least one connecting duct 24 a, 24 b, each with a shutter flap 26 a, 26 b serving as a shut-off and regulating flap is provided.
- These connecting channels 24 a, 24 b each open into an inflow channel 28 a, 28 b arranged laterally from the block charge 12.
- shutter flaps 30 a, 30 b serving as shut-off and regulating flaps are also built into the inflow channels 28 a, 28 b.
- 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, 22 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 charge 12, the corresponding flow direction being predetermined by setting the respective louvre flaps. Since the shape of the flow cross sections tapering 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 flow can be specifically mixed with fresh air in order to achieve certain temperature effects.
- the operating temperature of the fan 18 can 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.
- 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 useful when the block batch 12 must 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)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (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)
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 |
---|---|---|---|
DE3737254 | 1987-11-03 | ||
DE19873737254 DE3737254A1 (de) | 1987-11-03 | 1987-11-03 | Abkuehl-kammer zur konvektionskuehlung von flaechenhaftem gut |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0315590A2 true EP0315590A2 (fr) | 1989-05-10 |
EP0315590A3 EP0315590A3 (fr) | 1991-05-22 |
EP0315590B1 EP0315590B1 (fr) | 1994-01-26 |
Family
ID=6339674
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88810733A Expired - Lifetime EP0315590B1 (fr) | 1987-11-03 | 1988-10-26 | Chambre de refroidissement par convection de matériaux présentant des surfaces |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0315590B1 (fr) |
AT (1) | ATE100929T1 (fr) |
CA (1) | CA1329489C (fr) |
DE (2) | DE3737254A1 (fr) |
NO (1) | NO172364C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2103695A1 (fr) * | 2008-02-11 | 2009-09-23 | Dieter Uschkoreit | Dispositif destiné au refroidissement d'une pièce usinée |
Families Citing this family (2)
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 |
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 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619341A (en) * | 1947-09-26 | 1952-11-25 | Sunbeam Corp | Heat-treating furnace |
DE2122964B2 (de) * | 1971-05-10 | 1972-08-03 | Otto Junker Gmbh, 5101 Lammersdorf | Einrichtung zur umwaelzung des gases bei einer vorrichtung zum erwaermen oder kuehlen |
US4395233A (en) * | 1981-06-22 | 1983-07-26 | G. S. Blodgett Co., Inc. | Dual flow heating apparatus |
US4408986A (en) * | 1980-09-17 | 1983-10-11 | Stahlwerke Rochling-Burbach Gmbh | Method for thermal treatment of wire lashings and a continuous-heating furnace for performance of the method |
EP0129701A1 (fr) * | 1983-06-22 | 1985-01-02 | Schmetz GmbH & Co. KG Unternehmensverwaltung | Dispositif pour le refroidissement d'une charge, en particulier de pièces métalliques |
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 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE850200A (fr) * | 1977-01-07 | 1977-05-02 | Cobelcomex | Four a circulation d'air de convection |
DE3049162A1 (de) * | 1980-12-24 | 1982-07-15 | Keramikindustrieanlagen W.Strohmenger GmbH & Co KG, 8524 Neunkirchen | Trocknungsvorrichtung fuer keramikwaren |
DE3215509A1 (de) * | 1982-04-26 | 1983-10-27 | Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden | Vakuum-kammerofen |
-
1987
- 1987-11-03 DE DE19873737254 patent/DE3737254A1/de not_active Withdrawn
-
1988
- 1988-10-26 EP EP88810733A patent/EP0315590B1/fr not_active Expired - Lifetime
- 1988-10-26 DE DE88810733T patent/DE3887452D1/de not_active Expired - Fee Related
- 1988-10-26 AT AT88810733T patent/ATE100929T1/de not_active IP Right Cessation
- 1988-11-01 NO NO884857A patent/NO172364C/no not_active IP Right Cessation
- 1988-11-02 CA CA000581977A patent/CA1329489C/fr not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2619341A (en) * | 1947-09-26 | 1952-11-25 | Sunbeam Corp | Heat-treating furnace |
DE2122964B2 (de) * | 1971-05-10 | 1972-08-03 | Otto Junker Gmbh, 5101 Lammersdorf | Einrichtung zur umwaelzung des gases bei einer vorrichtung zum erwaermen oder kuehlen |
US4408986A (en) * | 1980-09-17 | 1983-10-11 | Stahlwerke Rochling-Burbach Gmbh | Method for thermal treatment of wire lashings and a continuous-heating furnace for performance of the method |
US4395233A (en) * | 1981-06-22 | 1983-07-26 | G. S. Blodgett Co., Inc. | Dual flow heating apparatus |
EP0129701A1 (fr) * | 1983-06-22 | 1985-01-02 | Schmetz GmbH & Co. KG Unternehmensverwaltung | Dispositif pour le refroidissement d'une charge, en particulier de pièces métalliques |
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 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2103695A1 (fr) * | 2008-02-11 | 2009-09-23 | Dieter Uschkoreit | Dispositif destiné au refroidissement d'une pièce usinée |
Also Published As
Publication number | Publication date |
---|---|
NO172364C (no) | 1993-07-14 |
NO884857L (no) | 1989-05-05 |
DE3887452D1 (de) | 1994-03-10 |
DE3737254A1 (de) | 1989-05-18 |
CA1329489C (fr) | 1994-05-17 |
EP0315590B1 (fr) | 1994-01-26 |
NO172364B (no) | 1993-03-29 |
NO884857D0 (no) | 1988-11-01 |
ATE100929T1 (de) | 1994-02-15 |
EP0315590A3 (fr) | 1991-05-22 |
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