EP2373946B1 - Appareil de traitement thermique de produits manufactures, en particulier faits de materiau ceramique - Google Patents
Appareil de traitement thermique de produits manufactures, en particulier faits de materiau ceramique Download PDFInfo
- Publication number
- EP2373946B1 EP2373946B1 EP09760821.0A EP09760821A EP2373946B1 EP 2373946 B1 EP2373946 B1 EP 2373946B1 EP 09760821 A EP09760821 A EP 09760821A EP 2373946 B1 EP2373946 B1 EP 2373946B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radiant
- jacket
- chamber
- burner
- evacuation
- 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.)
- Not-in-force
Links
- 238000007669 thermal treatment Methods 0.000 title claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 title claims description 7
- 239000000567 combustion gas Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 19
- 230000005855 radiation Effects 0.000 claims description 14
- 239000007800 oxidant agent Substances 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims 2
- 238000001035 drying Methods 0.000 description 6
- 238000010304 firing Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000002105 tongue Anatomy 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000012223 aqueous fraction Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
- F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements
- F26B3/305—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements the infrared radiation being generated by combustion or combustion gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
- F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
-
- 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
- F27B17/00—Furnaces of a kind not covered by any preceding group
- F27B17/0016—Chamber type furnaces
- F27B17/0041—Chamber type furnaces specially adapted for burning bricks or pottery
-
- 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
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
Definitions
- the present invention relates to an apparatus for thermal treatment of manufactured articles, particularly made of ceramic material.
- the processing of manufactured articles such as tiles, sanitary fixtures and bricks provides for the execution of various steps in a heated and controlled environment, such as in particular drying and firing.
- the drying step consists in keeping the ceramic articles that have already been shaped in a heated environment for the time needed to achieve the at least partial evaporation of the water fraction contained in them.
- drying kilns generally consist of a controlled-temperature chamber into which a stream of hot and dry air is introduced which strikes the articles to be dried, transferring heat to them, substantially by convection, and cold and moist air is extracted from such drying kilns.
- These drying kilns can operate continuously or discontinuously.
- the heated chamber is shaped like a tunnel and is crossed by the articles, which are loaded onto suitable conveyors from the inlet toward the outlet; in the second case, the heated chamber is instead provided with a single opening for introducing and removing the articles, which are kept stationary during the treatment.
- the firing step consists in a further heating of the articles that have already been dried, so as to achieve complete evaporation of the water contained therein and the necessary physical transformations, which make the mix and any coating acquire the properties that are required of the finished ceramic product.
- Kilns used for firing substantially consist of a heated chamber, which can have a single opening (discontinuous kilns) or can be tunnel-shaped (continuous kilns).
- these apparatuses use burners which substantially consist of a manifold body which is connected to a unit for feeding in a gaseous fuel, which exits from a combustion head at which there are one or more electrodes for generating and controlling the flame, and to a unit for feeding in a gaseous oxidizer (air), which strikes the head.
- the flame can be kept exposed or it can be confined within open tubular ducts, which have a proximal end that is associated with the manifold body and a distal end that is open for the outflow of the combustion gases.
- CA 1 170 042 An apparatus for thermal treatment of manufactured articles is known by CA 1 170 042 .
- the apparatus disclosed by CA 1 170 042 comprises an heating chamber that is provided with an opening for the outlet of the articles and means for transmitting heat.
- the means for transmitting heat disclosed by CA 1 170 042 comprise a burner placed inside a radiant tube, which is placed inside the heating chamber.
- the radiant tube is provided with multiple ports for the evacuation of the combustion gases which communicates with the internal of the chamber itself.
- these burners do not allow a uniform temperature distribution in the chamber, because the presence of the naked flame or of tongues of fire that exit from the openings of confined-flame burners, directly in the chamber causes a temperature peak thereat, which entails the risk of damaging the articles being processed.
- the aim of the present invention is to eliminate the drawbacks noted above of the background art, by providing an apparatus for thermal treatment of manufactured articles, particularly articles made of ceramic material, which allows optimization of the efficiency of heat exchange with the articles being processed, making it possible to minimize process times, costs linked to fuel consumption, and the space occupation of the apparatus itself, particularly in case of operation in a continuous cycle.
- an object of the present invention is to obtain a uniform distribution of the temperature and of the flow of combustion gases that strike the articles being processed.
- Another object of the present invention is to propose an apparatus whose installation does not entail difficulties in finding or preparing the site where it is to be located.
- Another object of the present invention is to provide an apparatus that is simple, relatively easy to provide in practice, safe to use, effective in operation, arid has relatively low costs.
- the reference numeral 1 generally designates an apparatus for thermal treatment of manufactured articles M, particularly made of ceramic material, such as tiles, sanitary fixtures, bricks and the like.
- the apparatus 1 comprises at least one heated chamber 2 which has at least one opening 3 for introducing at least one article M to be treated and at least one opening 4 for extracting the treated article M.
- the apparatus 1 further has means for transmitting heat to the article M, which consist of at least one burner 5 provided with a radiant tube 6 which is inserted in the chamber 2 and is provided with at least one port 7 for evacuating the combustion gases which is connected to the inside of the chamber so as to achieve a mixed heat propagation both by radiation and by convection.
- the evacuation port 7 is arranged directly inside the chamber 2, but it might also be arranged outside the chamber and be connected to it by means of suitable ducts for the passage of the combustion gases.
- the burner 5 comprises a manifold body 8, which is provided with a port 8a for introducing at least one gaseous fuel, such as methane gas, and a port 8b for introducing at least one gaseous oxidizer, such as air, such ports being associated with respective supply units, which are not shown because they are of a known type.
- a port 8a for introducing at least one gaseous fuel, such as methane gas
- a port 8b for introducing at least one gaseous oxidizer, such as air, such ports being associated with respective supply units, which are not shown because they are of a known type.
- the burner 5 further has a combustion head 9, which is associated with the manifold body 8 so as communicate with it by means of a fuel supply duct 10 and is provided with an ignition electrode 11 and with a flame control device 12, of the type of a second electrode.
- the radiant tube 6 comprises a radiant jacket 13, which has a proximal end 13a associated with the manifold body 8 and a distal end 13b, to the lateral wall of which the evacuation port 7 is associated.
- the combustion head 9 is accommodated within the radiant jacket 13.
- the evacuation port 7 consists of a hole that is formed directly in the side wall of the radiant jacket 13.
- the burner 5 can be of the self-recuperative type; the combustion head 9 is in fact arranged along the radiant jacket 13 so as to be spaced from the corresponding proximal end 13a for achieving heat exchange in countercurrent from the combustion gases to the oxidizer that is fed toward said head.
- the burner 5 is provided with means 14 for adjusting the position of the evacuation port 7 in order to direct the flow of combustion gases with respect to the article M ( Figure 3 ).
- these adjustment means 14 comprise an annular flange 15, which is associated with the proximal end 13a and is provided with a pin 16 which protrudes from the face of the flange that is directed toward the radiant jacket 13 in a position which coincides diametrically with respect to the evacuation port 7.
- the adjustment means 14 further comprise a plate 17 for fixing the radiant jacket 13 to the manifold body 8, provided with a central hole 18 in which said radiant jacket is inserted so as to pass through it and on the peripheral region of which there are a plurality of seats 19 in which the pin 16 can be inserted alternatively.
- the plate 17 is further provided with a plurality of through holes 20 for the insertion of screw means, not shown, for connection to the manifold body 8.
- the plate 17 has nine seats 19, which are distributed on a half-circle at the lower perimeter of the central hole 18 and are arranged symmetrically with respect to a vertical plane that passes through the longitudinal axis of the radiant jacket 13, and each one corresponds to a different angular arrangement of the evacuation port 7 with respect to the longitudinal axis of said radiant jacket, and therefore a different orientation of the outflow direction of the combustion gases from the evacuation port 7 with respect to the article M.
- the outflow direction of the exhaust gases is preferably horizontal or directed downward, the burner 5 being arranged above the article M.
- the burner 5 is arranged so that the manifold body 8 protrudes outside the chamber 2 and so that the radiant tube 6 is supported inside it by at least one first wall 2a that delimits said chamber.
- the apparatus 1 can provide means 21 for supporting the radiant tube 6 which cooperate with the distal end 13 b and are associated with a second wall 2b that delimits the chamber 2 and lies opposite the first wall 2a.
- the radiant jacket 13 therefore comprises a shank 22 which protrudes from the distal end 13b and the supporting means 21 have a corresponding seat in which said shank is inserted.
- the radiant jacket 13 has an extension that is substantially of the same order of magnitude as the size of the chamber 2.
- the transmission means preferably comprise a plurality of burners 5 which are arranged with their corresponding radiant tubes 6 in mutually opposite pairs so as to balance the temperature inside the chamber 2.
- the apparatus 1 can operate intermittently ( Figures 4 , 9 and 19 ), with the openings 3 and 4 mutually coinciding, or continuously ( Figures 5 , 10 and 20 ), with the chamber 2 tunnel-shaped, with horizontal or vertical extension, and means 23, of the type of a roller bed or other continuous conveyor of a known type, for transferring a plurality of articles M from the inlet opening 3 to the outlet opening 4.
- the burners 5 are arranged transversely to the direction in which the chamber 2 is crossed.
- the apparatus 1 can provide, for example, a firing or drying treatment of the articles M, both in the unfired state and in the fired state.
- the apparatus 1 uses a first type of burner 5, whose radiant tube 6 comprises an internal jacket 24, which is arranged inside the radiant jacket 13 and is jointly connected thereto so as to form an interspace 25 for the passage of the combustion gases between said jackets, which has a proximal end 24a associated with the manifold body 8 to supply the oxidizer and is provided with at least one opening 26 for the passage of the combustion gases in the interspace 25 proximate to the distal end 24b.
- the combustion head 9 is accommodated inside the internal jacket 24 and is spaced from the corresponding proximal end 24a.
- the evacuation port 7 is associated with the side wall of the radiant jacket 13 at the corresponding proximal end 13a.
- the burner 5 can further have baffle elements 27, which are arranged between the duct 10 and the internal jacket 24 so as to impart a helical motion to the flow of the oxidizer.
- a helical profile 28 is formed on the outer wall of the internal jacket 24 so as to impart a helical motion to the flow of combustion gases along the interspace 25.
- the radiant jacket 13 and the internal jacket 24 have a linear extension, but they might also be shaped differently.
- the internal jacket 24 is arranged concentrically with respect to the radiant jacket 13 and the duct 10 lies along the longitudinal axis of the internal jacket 24.
- each burner 5 can have a plurality of evacuation points 7 which are distributed on the side wall of the radiant jacket 13 at least at the corresponding proximal end 13a.
- the apparatus 1 uses a second type of burner 5 which has a plurality of evacuation ports 7, which are distributed in a region of the side wall of the radiant jacket 13 that is comprised between the combustion head 9 and the corresponding distal end 13b and is preferably spaced from said combustion head to avoid the escape of tongues of fire through the evacuation ports 7 proximate to the combustion triggering region.
- the evacuation ports 7 have a breadth that increases toward the distal end 13b, so as to avoid the exit of tongues of fire through them, in particular proximately to the combustion head 9.
- the region over which the evacuation ports 7 are distributed has a transverse extension, with respect to the longitudinal extension of the radiant jacket 13, that increases toward the distal end 13b so as to balance the flow-rate of the combustion gases in output from them, taking into account the load losses that occur by moving away from the combustion triggering region.
- This region therefore has an extension in plan view that is substantially trapezoid or, as an alternative, triangular which diverges toward the distal end 13b.
- such region has a longitudinal extension that is at least equal to half the length of the radiant jacket 13, so as to move beyond the centerline (designated by the reference letter L in the figures) of the chamber 2.
- each pair of consecutive burners 5 provides a distribution of evacuation ports 7 over the entire width of the chamber 2.
- the radiant jacket 13 can have a slot at said region on which a net is superimposed whose gaps form the evacuation ports 7.
- the apparatus 1 uses a third type of burner 5, which has a plurality of evacuation ports 7 as described above and is provided with shielding means 30, which cover at least part of the radiant tube 6 externally so as to protect it against any air currents that are present in the space in which said burner is installed and which might cool the radiant tube 6, reducing the effectiveness of the diffusion of heat by radiation.
- the shielding means 30 provide at least one portion 31 that substantially reflects the thermal radiation emitted by the radiant tube 6 and at least one portion 32 that is substantially transparent to said radiation.
- transparent is understood to mean that it can be crossed by thermal radiation.
- the substantially reflective portion 31 is contoured so as to concentrate the thermal radiation at the substantially transparent portion 32.
- the substantially reflective portion 31 comprises a wall made of metal plate, which is contoured so as to form a sort of flared barrel vault, in the inside curve of which the radiant tube 6 is arranged longitudinally.
- the substantially transparent portion 32 is arranged at the base of the vault, which in the illustrated embodiment is open.
- the radiant tube 6 is preferably inserted completely within the inside curve formed by the wall 31.
- the wall 31 covers a length that is substantially equal to the length of the radiant tube 6.
- the shielding means 30 comprise means 33 for supporting the radiant tube 6, which have a plurality of plates 34 which are rigidly connected to the wall 31 and are arranged at right angles to its longitudinal extension, each plate having a seat 35 for accommodating the radiant tube.
- a plate designated by the reference numeral 34a, is provided at the end of the wall 31 that faces the proximal end 13a and is of the type shown in Figure 17 , contoured so as to form a perimeter that substantially matches the perimeter formed by the transverse cross-section of the wall 31, and provided with a closed seat, designated by the reference numeral 35a, in which the radiant tube 6 is inserted so as to pass through snugly.
- a plurality of plates (three in Figure 16 ), designated by the reference numeral 34b, of the type shown in Figure 18 , are distributed along the longitudinal extension of the wall 31 and are contoured so as to occupy only partially the transverse section formed by the wall 31, and are provided with an open seat, designated by the reference numeral 35b, for supporting the radiant tube 6.
- the shielding means 30 have at least one opening 36 that is formed in the wall 31 at the proximal end 13a.
- the burner 5 comprises suspension means 37, which are associated with the shielding means 30 for installation of said burner.
- the suspension means 37 have a pair of tension members 38, which are arranged at respective longitudinal ends of the wall 31.
- Each tension member 3 8 has an end which is associated with the wall 31 and the opposite end which can be associated with a wall of the space in which the burner 5 is installed, for example by means of threaded connecting elements 39, the tension members 38 being threaded externally at their ends.
- the burner 5 is arranged above the manufactured articles M, with the evacuation ports 7 directed toward said articles.
- the shielding means 30 are arranged so that the substantially transparent portion 32 faces the articles M, so as to direct toward them the thermal radiation emitted by the radiant tube 6, reducing dispersion into the surrounding environment.
- the fuel and the oxidizer, fed along the internal jacket 24, generate the flame at the combustion head 9, downstream of which the combustion gases propagate along said internal jacket toward the distal end 24b and from there, through the opening 26, along the interspace 25 toward the proximal end 13a, until they exit through the evacuation port 7.
- the introduction of the combustion gases into the chamber 2 through the evacuation port 7 further provides a transfer of heat to the article M by convection.
- the oxidizer is fed directly into the radiant jacket 13 and the portion of radiant tube 6 downstream of the combustion trigger region transfers heat to the article M by radiation, while the portion comprised between the proximal end 13a and the combustion head 9 also provides preheating of the oxidizer, which receives heat both from the combustion gases inside the radiant jacket 13, with which it mixes, and from the chamber 2.
- the combustion gases in output from the evacuation ports 7 transfer heat to the article M by convection.
- evacuation ports 7 make it possible to adjust the amount of heat that is transferred by convection with respect to the amount that is transferred by radiation.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Gas Burners (AREA)
- Combustion Of Fluid Fuel (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Tunnel Furnaces (AREA)
Claims (15)
- Appareil (1) de traitement thermique d'articles manufacturés, réalisés en particulier en un matériau céramique, comprenant au moins une chambre chauffée (2), pourvue d'au moins une ouverture (3) pour l'introduction d'au moins un article (M) devant être traité et d'au moins une ouverture (4) pour l'extraction dudit au moins un article traité (M), et des moyens de transmission de chaleur vers ledit au moins un article (M), qui comprennent au moins un brûleur (5) pourvu d'un tube radiant (6), le tube radiant (6) étant inséré dans ladite chambre (2) et étant pourvu d'une pluralité d'orifices (7) pour l'évacuation des gaz de combustion, les orifices (7) étant reliés à l'intérieur de ladite chambre de manière à obtenir une propagation mixte de chaleur par rayonnement et par convection, dans lequel ledit brûleur (5) comprend un corps collecteur (8), pour l'introduction d'au moins un combustible gazeux et d'au moins un oxydant gazeux, et au moins une tête de combustion (9), qui est associée audit corps collecteur (8) pour l'apport dudit combustible gazeux et qui est pourvue d'une électrode d'allumage (11) et d'un dispositif de réglage de flamme (12), et dans lequel ledit tube radiant (6) comprend un manchon radiant (13), à la paroi latérale duquel lesdits orifices d'évacuation (7) sont associés et qui est pourvu d'une extrémité proximale (13a), qui est associée audit corps collecteur (8), et d'une extrémité distale (13b), qui est fermée, ladite tête de combustion (9) étant disposée à l'intérieur dudit manchon radiant (13), lesdits orifices d'évacuation (7) étant répartis dans une région de la paroi latérale dudit manchon radiant (13) qui est comprise entre ladite tête de combustion (9) et l'extrémité distale (13b) correspondante, dans lequel ladite région comporte, par rapport à l'extension longitudinale dudit manchon radiant (13), une extension transversale qui augmente vers l'extrémité distale (13b) correspondante.
- Appareil (1) selon la revendication 1, caractérisé en ce que lesdits orifices d'évacuation (7) sont disposés directement à l'intérieur de ladite chambre (2).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit brûleur (5) est du type auto-récupérateur, la tête de combustion (9) étant disposée le long du manchon radiant (13), en étant espacée par rapport à l'extrémité proximale (13a) correspondante.
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que lesdits orifices d'évacuation (7) ont une largeur qui augmente vers l'extrémité distale (13b) dudit manchon radiant (13).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ladite région comporte une extension longitudinale qui est au moins égale à la moitié de l'extension longitudinale dudit manchon radiant (13).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit brûleur (5) comprend des moyens (14) pour ajuster l'agencement dudit au moins un orifice d'évacuation (7) afin de diriger l'écoulement des gaz de combustion par rapport audit article (M)
- Appareil selon la revendication 6, caractérisé en ce que lesdits moyens d'ajustement (14) comprennent un épaulement (15), qui est associé à l'extrémité proximale (13a) dudit manchon radiant (13), une goupille (16) étant associée à l'épaulement de manière à être en saillie, et une plaque (17) pour la fixation audit corps collecteur (8), en ce que la plaque (17) est pourvue d'un orifice (18) pour l'insertion dudit manchon radiant (13), et en ce qu'il y a, sur la région périphérique de l'orifice, une pluralité de sièges (19), dans lesquelles il est possible d'adapter de manière alternative ladite goupille (16), le placement de ladite goupille dans chaque siège (19) correspondant à une position angulaire différente des orifices d'évacuation (7) par rapport à l'axe longitudinal dudit manchon radiant (13).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il est du type à fonctionnement intermittent, lesdites ouvertures (3, 4) d'introduction et d'extraction coïncidant mutuellement.
- Appareil (1) selon une ou plusieurs des revendications 1 à 7, caractérisé en ce qu'il est du type à fonctionnement continu, des moyens (23) étant prévus pour le transfert dudit au moins un article (M) de l'ouverture d'introduction (3) vers l'ouverture d'extraction (4).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit brûleur (5) est disposé de manière à ce que le corps collecteur (8) soit en saillie de manière externe par rapport à ladite chambre (2) et de manière à ce que le tube radiant (6) soit porté à l'intérieur de celle-ci par au moins une première paroi (2a) de ladite chambre.
- Appareil (1) selon la revendication 10, caractérisé en ce qu'il comprend des moyens (21) pour porter ledit tube radiant (6), qui coopèrent avec l'extrémité distale (13b) dudit manchon radiant (13) et sont associés à une deuxième paroi (2b) dudit chambre (2), qui est disposé à l'opposé de la première paroi (2a).
- Appareil (1) selon la revendication 11, caractérisé en ce que ledit manchon radiant (13) comprend une tige (22), qui est en saillie par rapport à l'extrémité distale (13b) correspondante et qui est associée auxdits moyens (21) de support.
- Appareil (1) selon la revendication 10, caractérisé en ce qu'il comprend des moyens pour suspendre ledit brûleur (5) à l'intérieur de ladite chambre (2), ces moyens coopérant avec ledit tube radiant (6).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que ledit tube radiant (6) comporte une extension longitudinale du même ordre de grandeur que la taille de ladite chambre (2).
- Appareil (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que lesdits moyens de transmission comprennent une pluralité desdits brûleurs (5), qui sont disposés avec leurs tubes radiants correspondants (6) placés en paires mutuellement opposées.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMO2008A000324A IT1392209B1 (it) | 2008-12-16 | 2008-12-16 | Attrezzatura per il trattamento termico di manufatti, particolarmente in materiale ceramico |
ITMO2009A000040A IT1393144B1 (it) | 2009-02-17 | 2009-02-17 | Bruciatore a tubo radiante ad alta efficienza di scambio termico |
PCT/EP2009/065501 WO2010069706A1 (fr) | 2008-12-16 | 2009-11-19 | Appareil de traitement thermique de produits manufacturés, en particulier faits de matériau céramique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2373946A1 EP2373946A1 (fr) | 2011-10-12 |
EP2373946B1 true EP2373946B1 (fr) | 2014-07-23 |
Family
ID=41683660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09760821.0A Not-in-force EP2373946B1 (fr) | 2008-12-16 | 2009-11-19 | Appareil de traitement thermique de produits manufactures, en particulier faits de materiau ceramique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2373946B1 (fr) |
ES (1) | ES2519477T3 (fr) |
WO (1) | WO2010069706A1 (fr) |
Families Citing this family (2)
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ITRE20130059A1 (it) * | 2013-08-02 | 2015-02-03 | Sacmi | Modulo riscaldante ad irraggiamento per forni continui di cottura di prodotti ceramici |
CN109443011A (zh) * | 2018-12-17 | 2019-03-08 | 上海颐柏科技股份有限公司 | 一种用于热处理炉的电热辐射装置 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2232638A (en) * | 1939-02-20 | 1941-02-18 | Franz G Schwalbe | Lehr |
GB620239A (en) * | 1947-01-10 | 1949-03-22 | Leopold Friedman | Improvements in and relating to stoves or ovens for use in drying materials and articles |
US2711310A (en) * | 1954-07-21 | 1955-06-21 | Byron S Morrill | Baking and drying oven |
US3100632A (en) * | 1959-05-16 | 1963-08-13 | Famatex Gmbh | Arrangement for heating machines for the drying and heat treatment of textiles and the like |
US3208740A (en) * | 1961-01-06 | 1965-09-28 | Midland Ross Corp | Heating apparatus |
BE650222A (fr) * | 1963-07-10 | 1964-11-03 | ||
US3307529A (en) * | 1964-10-23 | 1967-03-07 | Fostoria Fannon Inc | Radiant heater arrangement |
GB1127948A (en) * | 1966-04-05 | 1968-09-18 | Ass Elect Ind | Improvements in furnaces and other heating chambers heated by fluid fuel burners |
GB1341393A (en) * | 1970-06-15 | 1973-12-19 | Hotwork Dev Ltd | Radiant tube heating devices |
DE2366012A1 (de) * | 1973-05-11 | 1977-05-18 | Mohn Ohg Reinhard | Vorrichtung zum trocknen von farben, lacken und klebern auf pappe, papier, kunststoff oder blech, insbesondere zum einbau in druckmaschinen |
US4120646A (en) * | 1977-03-07 | 1978-10-17 | Groff Edwin I | Oven heating system |
JPS595646B2 (ja) * | 1980-08-06 | 1984-02-06 | 石川島播磨重工業株式会社 | 金属加熱炉 |
US4373702A (en) * | 1981-05-14 | 1983-02-15 | Holcroft & Company | Jet impingement/radiant heating apparatus |
JPS57192215A (en) * | 1981-05-21 | 1982-11-26 | Ishikawajima Harima Heavy Ind Co Ltd | Metal-heating oven |
JPH0674927B2 (ja) * | 1985-04-08 | 1994-09-21 | 大阪瓦斯株式会社 | 天井吊下げ型遠赤外線暖房器 |
AU1862897A (en) * | 1996-03-11 | 1997-10-01 | Roasting Technologies Pty Ltd | Rotary and tunnel-type kilns with multi-ducted radiant heating |
IT1290102B1 (it) * | 1997-03-17 | 1998-10-19 | Siti | Forno per la cottura di materiali ceramici |
IT1318337B1 (it) * | 2000-05-09 | 2003-08-25 | Sacmi Forni Spa | Gruppo per la distribuzione controllata dei gas per la regolazionedella temperatura dei forni ceramici monostrato. |
FR2826710B1 (fr) * | 2001-06-29 | 2003-10-03 | Gaz De France | Dispositif radiant a bruleur de gaz et recirculation, adapte en vue d'une production reduite d'oxydes d'azote |
-
2009
- 2009-11-19 EP EP09760821.0A patent/EP2373946B1/fr not_active Not-in-force
- 2009-11-19 WO PCT/EP2009/065501 patent/WO2010069706A1/fr active Application Filing
- 2009-11-19 ES ES09760821.0T patent/ES2519477T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
EP2373946A1 (fr) | 2011-10-12 |
ES2519477T3 (es) | 2014-11-07 |
WO2010069706A1 (fr) | 2010-06-24 |
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