EP0249411A1 - Öfen - Google Patents

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Publication number
EP0249411A1
EP0249411A1 EP87304990A EP87304990A EP0249411A1 EP 0249411 A1 EP0249411 A1 EP 0249411A1 EP 87304990 A EP87304990 A EP 87304990A EP 87304990 A EP87304990 A EP 87304990A EP 0249411 A1 EP0249411 A1 EP 0249411A1
Authority
EP
European Patent Office
Prior art keywords
kiln
cars
car
receiving
assembly
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
EP87304990A
Other languages
English (en)
French (fr)
Other versions
EP0249411B1 (de
Inventor
Arthur John Rowley
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.)
British Ceramic Service Co Ltd
Original Assignee
British Ceramic Service Co 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26290897&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0249411(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB868614133A external-priority patent/GB8614133D0/en
Priority claimed from GB868614132A external-priority patent/GB8614132D0/en
Application filed by British Ceramic Service Co Ltd filed Critical British Ceramic Service Co Ltd
Priority to AT87304990T priority Critical patent/ATE60430T1/de
Publication of EP0249411A1 publication Critical patent/EP0249411A1/de
Application granted granted Critical
Publication of EP0249411B1 publication Critical patent/EP0249411B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/26—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers
    • F27B9/262—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace on or in trucks, sleds, or containers on or in trucks

Definitions

  • the present invention concerns improvements in or relating to kiln assemblies, and especially but not exclusively to kilns for firing ceramic ware.
  • a kiln assembly including a plurality of cars adapted to carry ware to be fired through the kiln with the cars arranged such that their dimension transverse to the direction of movement through the kiln is greater than their dimension parallel to the kiln, receiving and feeding means, for respectively receiving cars exiting from the kiln and cars to be fed to the kiln, and conveyor means for moving cars between the receiving and feeding means said receiving means incorporating a car turning arrangement whereby after leaving the kiln and prior to re-introduction to the kiln each car is rotated through 90° such that as it travels from the receiving means to the feeding means its shortest dimension is transverse to the direction of travel through the kiln.
  • the kiln cars have wheels adapted to run on rails arranged in the kiln in the longitudinal direction of the kiln.
  • the receiving and feeding means each have an elevating device for lifting and lowering kiln cars from and to the rails.
  • the feeding and receiving means are movable transversely to the direction of travel of cars through the kiln.
  • the conveyor means is arranged alongside the kiln to transport cars deposited thereon by the receiving means to the feeding means, the cars being unloaded and loaded with ware while on the conveyor means.
  • the car comprises a base from the upper surface of which project a plurality of columns arranged in pairs, a support beam extending between the columns of each pair and a relatively thin ware supporting bat supported by three or more beams.
  • the columns comprise hollow tubes of refractory material terminating in enlarged caps having grooves therein to accommodate the beams. Where no caps are provided the column tops may be grooved to accommodate the beams.
  • a method of continuously cycling kiln cars through a kiln assembly comprising passing a car through a kiln, receiving the car on its discharge from the kiln, rotating it through 90°, conveying it to the entrance to the kiln and prior to re-introducing it into the kiln rotating it through 90°.
  • loading and unloading operations are carried out as the car is returned from the exit to the entrance of the kiln.
  • the car is lifted off a transportation arrangement on exit from the kiln and deposited on a return conveyor arrangement and is lifted from said conveyor arrangement and redeposited on the kiln transportation arrangement at the entrance to the kiln.
  • Fig 1 shows only regions at the feed and delivery ends from a tunnel kiln.
  • a kiln car feed means 12 At the entrance 10 to the kiln there is provided a kiln car feed means 12 while at the exit 14 from the kiln there is provided a kiln car receiving means 16.
  • the feed and delivery means are essentially of similar constuction and the description of one of said means set out below should be regarded as being a description of the other means.
  • a plurality of wheeled kiln cars 18 are provided to carry ware through the kiln.
  • the kiln cars travel through the kiln on their wheels and are conveyed from the inlet 10 to the outlet 14 of the kiln by any suitable known means on rails 20 extending through the kiln.
  • the feed means 12 includes a structure 22 adapted to engage the underside of a kiln car 18 and elevate the car above the level at which its wheels 112 (Fig 2) would engage the rails 20.
  • the structure 22 is mounted on a turntable 24 which, on operation, rotates the structure 22 with a kiln car thereon through 90°.
  • the feeding means 12 is itself mounted on rails whereby it may move from a position in which the centre of its turntable lies on the longitudinal centre axis of the kiln to a point laterally spaced from this axis where the structure 22 can engage a kiln car 18 brought loaded with ware to a pick-up station P by a conveyor 26 arranged alongside the kiln and running parallel to the rails 20 thereof.
  • a kiln car 18 brought by the conveyor 26 to the pick-up station P is lifted off the conveyor by the feed means 12 which is then traversed to the position shown in the drawing at which point the turntable assembly is operated to rotate the kiln car through 90° such that its shorter dimension lies along the line parallel to the rails 20.
  • the structure 22 on which the kiln car is supported is then lowered to engage the kiln car's wheels on the rails 20.
  • the car may then be progressed in any normal manner through the kiln so that the ware thereon is fired.
  • the receiving means 16 which, as set out above is similar in construction and operation to the feed means 12, receives on its structure 22 a "fired" kiln car, raises the kiln car 18 clear of the rails 20, rotates this kiln car through 90° by means of its turntable assembly 24, moves transversely of the rails 20 and deposits the kiln car at a loading station L on the chain conveyor 26.
  • the chain conveyor then moves the kiln car alongside the kiln from outlet to inlet and during this movement it can be readily unloaded and loaded manually by operatives or automatically by machinery, the loading and unloading operations being facilitated by the fact that the shortest dimension of the car, that is its fore-and-aft dimension as it passes through the kiln, is normal to the loading and unloading direction so that the ware when being loaded and unloaded has to be moved over a relatively short distance.
  • feed and receiving means may be employed provided that they receive a car in one orientation and rotate it through 90° before discharging it and the feed and receiving means may be arranged to serve more than one kiln whilst using one or more conveyors for the return transport system.
  • the means for transporting cars through the kiln may be amended, for example roller means may be employed.
  • two or more cars of the type described above can be arranged alongside each other and passed side-by-side through the kiln. In such a situation modified feeding and receiving means would be called for.
  • the kiln is a tunnel kiln where firing is continuous as the cars make from the entrance to the exit of the kiln.
  • the invention is equally applicable to a shuttle kiln where a batch of cars are fed to the kiln where they remain stationary while firing takes place.
  • a shuttle kiln assembly according to the invention, cars are fed through the kiln entrance as before while the exit is closed until sufficient cars are accumulated in the kiln. Firing then takes place and after firing the kiln exit is opened to allow cars to move to the receiving means 16.
  • Fig 2 shows one type of kiln car which is suitable for use in a kiln of the type described with reference to Fig 1.
  • the kiln car is adapted to run on rails 20 by means of wheels 112 rotatably mounted on the underside of the chassis 108 of the car.
  • the car is provided with a layer of refractory insulating material 114 through which passes a plurality of pairs of refractory columns in the form of tubes 118 each terminating in an enlarged diameter end cap 120 and being supported by the steel chassis 108 of the kiln car.
  • a horizontal groove 122 is formed in the upper face of each end cap 120 so that a rectangular cross-section beam 124 may be received therein with the greatest cross-sectional dimension of the beam being arranged substantially vertically.
  • Each edge of the beam 124 is provided with notches 126 to mate with the notches 122 in the end caps 120 to firmly locate the beam against transverse displacement. As notches 126 are formed in each edge of the beam the beams may be reversed in use.
  • a plain or perforated bat 130 of a refractory material is supported on the beam and the spacing of the beams is so chosen that they take a major proportion of the weight of the ware on the bat so that the bat need not be particularly rigid and consequently can be of relatively light weight.
  • the bat may be formed from a plurality of rectangular sections.
  • a bat thickness of 15mm may be employed as opposed to the thickness of 30 - 40mm now employed with conventional bat supporting means.
  • kiln cars of the type illustrated in Fig 2 for example the construction of the kiln car can take any convenient form and the beams and the support columns can be arranged in any convenient manner.
  • the bats 130 can be dispensed with and the ware can be supported directly on the beam tops.
  • the columns 118 may be notched to directly receive the beams 124 without the use of the caps 120.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Tunnel Furnaces (AREA)
  • Plural Heterocyclic Compounds (AREA)
  • Electric Stoves And Ranges (AREA)
  • Glass Compositions (AREA)
  • Baking, Grill, Roasting (AREA)
  • Intermediate Stations On Conveyors (AREA)
EP87304990A 1986-06-10 1987-06-05 Öfen Revoked EP0249411B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87304990T ATE60430T1 (de) 1986-06-10 1987-06-05 Oefen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8614132 1986-06-10
GB8614133 1986-06-10
GB868614133A GB8614133D0 (en) 1986-06-10 1986-06-10 Ware supporting assembly
GB868614132A GB8614132D0 (en) 1986-06-10 1986-06-10 Kilns

Publications (2)

Publication Number Publication Date
EP0249411A1 true EP0249411A1 (de) 1987-12-16
EP0249411B1 EP0249411B1 (de) 1991-01-23

Family

ID=26290897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87304990A Revoked EP0249411B1 (de) 1986-06-10 1987-06-05 Öfen

Country Status (4)

Country Link
EP (1) EP0249411B1 (de)
AT (1) ATE60430T1 (de)
DE (1) DE3767574D1 (de)
ES (1) ES2021361B3 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490396A (en) * 1920-03-26 1924-04-15 American Dressler Tunnel Kilns Tunnel kiln
FR2124832A5 (de) * 1971-01-28 1972-09-22 Gibbons Brothers Ltd
DE2939437A1 (de) * 1979-09-28 1981-04-16 Annawerk Keramische Betriebe GmbH, 8633 Rödental Brennwagenaufbau
FR2517295A1 (fr) * 1981-11-27 1983-06-03 Impianti Termoelettrici Ind Procede et installation pour la cuisson de matieres ceramiques
US4505630A (en) * 1979-12-17 1985-03-19 Besser Company Article transfer apparatus
GB2175984A (en) * 1985-05-31 1986-12-10 Hutschenreuther Apparatus for firing ceramic products

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1490396A (en) * 1920-03-26 1924-04-15 American Dressler Tunnel Kilns Tunnel kiln
FR2124832A5 (de) * 1971-01-28 1972-09-22 Gibbons Brothers Ltd
DE2939437A1 (de) * 1979-09-28 1981-04-16 Annawerk Keramische Betriebe GmbH, 8633 Rödental Brennwagenaufbau
US4505630A (en) * 1979-12-17 1985-03-19 Besser Company Article transfer apparatus
FR2517295A1 (fr) * 1981-11-27 1983-06-03 Impianti Termoelettrici Ind Procede et installation pour la cuisson de matieres ceramiques
GB2175984A (en) * 1985-05-31 1986-12-10 Hutschenreuther Apparatus for firing ceramic products

Also Published As

Publication number Publication date
DE3767574D1 (de) 1991-02-28
ES2021361B3 (es) 1991-11-01
ATE60430T1 (de) 1991-02-15
EP0249411B1 (de) 1991-01-23

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