EP0314946B1 - Fermeture de four pour fours industriels - Google Patents
Fermeture de four pour fours industriels Download PDFInfo
- Publication number
- EP0314946B1 EP0314946B1 EP88116880A EP88116880A EP0314946B1 EP 0314946 B1 EP0314946 B1 EP 0314946B1 EP 88116880 A EP88116880 A EP 88116880A EP 88116880 A EP88116880 A EP 88116880A EP 0314946 B1 EP0314946 B1 EP 0314946B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- furnace
- door
- heat shield
- leaf springs
- heat
- 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
Links
Images
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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
Definitions
- the invention relates to a furnace closure for industrial furnaces, consisting of a lockable furnace door on the furnace housing and a heat protection door attached to the inside of the furnace door made of a thermal insulating material, which seals the thermal insulation of the furnace interior gas-tight.
- Industrial furnaces for heat treatment or gas treatment of workpieces normally consist of a cylindrical pressure housing, one side of which is provided with an oven lock in the form of an oven door for loading and unloading the batches of workpieces to be treated.
- the heated batch chamber which is shielded from the outside by thermal insulation, usually in the form of a cylindrical tube made of graphite felt or graphite laminate with lids, the insulating lid of which must also be removable, namely for loading and unloading and for gas circulation during the treatment process in the oven.
- the insulating cover has to seal particularly well against the thermal furnace insulation in order to avoid buoyant flows of the gas between the heating chamber and the cold housing wall.
- the oven lock usually consists of an oven door fitted to the oven housing and an attached to it Heat protection door, which seals the thermal insulation of the furnace as an insulating cover. It is usually closed by means of a bayonet lock, so that the oven lock must be rotated by 15 to 30 ° each time the oven is closed and opened. Since the heat protection door is pressed onto the thermal insulation, there is a frictional removal of the insulating material in the sealing zone each time the furnace is opened and closed, so that after some time the thermal insulation of the furnace becomes leaky and must be repaired.
- High-pressure sintering furnaces usually have a graphite muffle inside the thermal insulation, which must also be sealed with a lid.
- the threaded spindle can advantageously be actuated from the outside of the furnace.
- the inner muffle door is attached to the inside of the heat protection door via axially displaceable guide pins that penetrate the heat protection door, and the heads of the guide pins are in contact with leaf springs additionally attached to the central threaded hub for the purpose of pressure on the furnace inner muffle.
- the distance between the furnace door and the heat protection door or inner muffle door can be set so that when the furnace door is closed in the bayonet lock there is no friction between the heat protection door and thermal insulation or the inner muffle door and inner muffle and therefore no material is removed. Friction removal of the insulating material can be avoided or minimized even more reliably if the heat-proof door is not closed tightly after the furnace door has been closed by actuating the threaded spindle from the outside.
- the contact pressure can be adjusted by the number and the spring properties of the leaf springs. They can consist of spring steel or graphite fiber reinforced carbon.
- the resilient pressing of the heat protection door or the inner muffle door has the further advantage that thermal expansion can be easily compensated for.
- the figure shows schematically a longitudinal section through an exemplary embodiment of the furnace closure according to the invention, the upper part showing the furnace closure with the heat protection door open and the lower part of the figure showing the furnace closure with the heat protection door and inner muffle door closing tightly.
- the oven consists of an oven housing (1) which is closed with an oven door (2).
- the heat protection door (5) is fastened to the furnace door (2) by means of leaf springs (3) and a central thread hub (4) by screwing the thread hub (4) onto the threaded spindle (6), which is located on the furnace door (2) and can be operated from the outside by means of an actuating device (7).
- the leaf springs (3) are attached to brackets (8) on the outer edge of the heat protection door (5).
- the leaf springs (3) press the heat protection door (5) onto the thermal insulation (9) of the furnace and thereby seal the furnace interior gas-tight.
- the inner muffle door (11), which seals the inner muffle (12), is fastened to the heat protection door (5) via guide pins (10).
- the inner muffle door (11) is pressed on via additional leaf springs (13) which are in contact with the heads (14) of the guide pins (10).
- the contact pressure of the heat protection door can be easily adjusted.
- the heat protection door (5) is lifted off the thermal insulation (9) with the actuating device (7).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Furnace Details (AREA)
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88116880T ATE67841T1 (de) | 1987-10-31 | 1988-10-12 | Ofenverschluss fuer industrieoefen. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE8714544U | 1987-10-31 | ||
DE8714544U DE8714544U1 (de) | 1987-10-31 | 1987-10-31 | Ofenverschluß für Industrieöfen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0314946A1 EP0314946A1 (fr) | 1989-05-10 |
EP0314946B1 true EP0314946B1 (fr) | 1991-09-25 |
Family
ID=6813646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88116880A Expired - Lifetime EP0314946B1 (fr) | 1987-10-31 | 1988-10-12 | Fermeture de four pour fours industriels |
Country Status (5)
Country | Link |
---|---|
US (1) | US4883002A (fr) |
EP (1) | EP0314946B1 (fr) |
AT (1) | ATE67841T1 (fr) |
DE (2) | DE8714544U1 (fr) |
ES (1) | ES2024610B3 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2639097A1 (fr) * | 1988-11-17 | 1990-05-18 | Bourgeois Ste Coop Production | Four a porte double |
JPH04227470A (ja) * | 1990-06-05 | 1992-08-17 | Arthur Pfeiffer Vakuumtech Wetzlar Gmbh | 熱処理装置における閉塞装置 |
US5302120A (en) * | 1992-06-15 | 1994-04-12 | Semitool, Inc. | Door assembly for semiconductor processor |
US5449289A (en) * | 1992-06-15 | 1995-09-12 | Semitool, Inc. | Semiconductor processor opening and closure construction |
US5803021A (en) * | 1994-10-11 | 1998-09-08 | Combustion Engineering, Inc. | Boiler access door construction |
US5720855A (en) * | 1996-05-14 | 1998-02-24 | Saturn Machine & Welding Co. Inc. | Coke oven door |
US6017215A (en) * | 1996-10-15 | 2000-01-25 | Reliability Inc. | Expandable panel for environmentally controllable chamber |
US6729245B2 (en) * | 2000-02-17 | 2004-05-04 | Kenneth D. Clark | Fill door having angled movement |
US6609908B2 (en) * | 2001-11-13 | 2003-08-26 | Ets Schaefer Corporation | Replaceable heater cover |
PL213246B1 (pl) * | 2009-02-12 | 2013-02-28 | Seco Warwick Spolka Akcyjna | Piec retortowy do obróbki cieplnej i cieplno-chemicznej |
EP2426321A1 (fr) * | 2010-09-03 | 2012-03-07 | Siemens Aktiengesellschaft | Boîtier pour une turbine à gaz |
US10023954B2 (en) * | 2011-09-15 | 2018-07-17 | Applied Materials, Inc. | Slit valve apparatus, systems, and methods |
CN107575885A (zh) * | 2017-07-25 | 2018-01-12 | 盐城美希密封件有限公司 | 一种方便启闭的密封炉门 |
CN110514012A (zh) * | 2019-09-09 | 2019-11-29 | 斯默因热能科技(杭州)有限公司 | 一种超长炉门的密封装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE568135C (de) * | 1930-12-12 | 1933-01-14 | Hermann Zepernick | Tuerverschluss an Waermebehandlungsoefen |
FR931786A (fr) * | 1945-09-12 | 1948-03-03 | Semet Solvay Co | Perfectionnements aux portes de four à coke à obturation automatique |
US2953998A (en) * | 1957-08-08 | 1960-09-27 | Thomas C Pew | Heat treating apparatus |
US3055321A (en) * | 1958-11-24 | 1962-09-25 | Babcock & Wilcox Co | Access door |
US3990950A (en) * | 1973-09-06 | 1976-11-09 | Bloom Engineering Company, Inc. | Leveler door for coke ovens |
US4121383A (en) * | 1977-07-11 | 1978-10-24 | Perry Oceanographics, Inc. | Closure mechanism for a door |
US4216062A (en) * | 1979-02-05 | 1980-08-05 | United States Steel Corporation | Sealing means for a coke oven chuck door |
DE2939070C2 (de) * | 1979-09-27 | 1982-10-07 | Ateliers Louis Carton S.A., Tournai | Koksofentür |
DE3307844A1 (de) * | 1983-03-05 | 1984-09-06 | Krupp-Koppers Gmbh, 4300 Essen | Koksofentuer |
DE3311183C2 (de) * | 1983-03-26 | 1987-04-02 | Carl Still Gmbh & Co Kg, 4350 Recklinghausen | Koksofentür mit Dichtungsmembranplatte |
US4647343A (en) * | 1984-05-03 | 1987-03-03 | Wsw Planungs - Gmbh | Self sealing coke oven door of lightweight construction |
US4534488A (en) * | 1984-11-21 | 1985-08-13 | Boggs John A | Locking device for garbage can lid |
US4596197A (en) * | 1985-01-10 | 1986-06-24 | Raymond Kaiser Engineers Inc. | Coke oven door |
-
1987
- 1987-10-31 DE DE8714544U patent/DE8714544U1/de not_active Expired
-
1988
- 1988-10-12 DE DE8888116880T patent/DE3865174D1/de not_active Expired - Lifetime
- 1988-10-12 ES ES88116880T patent/ES2024610B3/es not_active Expired - Lifetime
- 1988-10-12 EP EP88116880A patent/EP0314946B1/fr not_active Expired - Lifetime
- 1988-10-12 AT AT88116880T patent/ATE67841T1/de not_active IP Right Cessation
- 1988-10-24 US US07/261,403 patent/US4883002A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0314946A1 (fr) | 1989-05-10 |
ATE67841T1 (de) | 1991-10-15 |
US4883002A (en) | 1989-11-28 |
ES2024610B3 (es) | 1992-03-01 |
DE3865174D1 (de) | 1991-10-31 |
DE8714544U1 (de) | 1987-12-23 |
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