• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Oven for crosslinking a continuous mattress (12) of mineral or vegetable fibers, comprising a plurality of heating chambers (20) traversed successively by said fiber mat (12), said oven being characterized in that at least one one of said boxes further comprises, between the external insulation casing (49) of the oven and the central compartment (40) of said box, an integrated heating and hot gas recirculation device comprising: - at least one turbine radial assembly (50) mounted horizontally on the upper wall (45) or the lower wall (46) of the central compartment (40), the axis of rotation of which is arranged vertically, said turbine sucking the hot gas along said axis through an outlet (48) of the gas of the central compartment (40) after passing through the mattress (12), and radially rejecting it to recirculation means (51, 52), - means for recirculation (51, 52) of the gas hot out of the radia turbine the (50) up to an inlet (47) of the gas in the compartment (40), said recirculation means being arranged at least partly on at least one side wall (43, 44) of the compartment, - at at least one means for heating (53) the gas flowing in said box.
    公开号:FR3037640A1
    申请号:FR1555612
    申请日:2015-06-19
    公开日:2016-12-23
    发明作者:Bernard Baudouin；Christine Nguyen
    申请人:Saint Gobain Isover SA France；
    IPC主号:
    专利说明:

    [0001] The invention relates to the field of drying ovens for a continuous mattress of mineral or vegetable fibers, in particular mineral wool, such as glass wool or rock wool. . These mattresses are intended to be cut to form, for example, panels or rolls of thermal and / or acoustic insulation.
    [0002] The manufacture of such insulating fiber mattresses primarily comprises the fiber drawing and the deposition of fibers on a perforated conveyor or mobile conveyor. The neoformed pile of fibers is placed on the conveyor by means of suction boxes arranged under the conveyor on which they are deposited. During fiberizing, a binder is sprayed in the form of a solution or suspension in a volatile liquid such as water on the drawn fibers, this binder having adhesive properties and usually comprising a heat-curable material, such as a thermosetting resin. The primary layer of relatively loose fibers on the collector conveyor is then transferred to a heating device commonly referred to as the curing oven. The continuous fiber mat traverses the oven throughout its length, with conveyors facing one above the other, pressing the mattress between them, and whose distance is adjustable. Such a mattress thus has a greater or lesser density depending on the degree of compression exerted by the two conveyors in the oven. During its passage in the oven, the mattress is simultaneously dried and subjected to a specific heat treatment which causes the polymerization (or "hardening") of the thermosetting resin of the binder present on the surface of the fibers.
    [0003] The procedure used to cause the curing of the binder is to pass heated air through the entire thickness of the mattress, so that the binder present throughout the thickness of the mattress is itself gradually raised to a temperature above its hardening temperature. To this end, the reticulation oven is composed of a chamber 3037640 2 constituting a closed chamber in which are arranged a series of boxes fed by hot air burners circulated by fans. Each box thus defines an independent heating zone, in which specific heating conditions are set. The 5 boxes are separated by walls having openings for the mattress and the upper and lower conveyors. The use of a plurality of boxes advantageously allows a graduated and better controlled rise in the temperature of the mattress throughout its passage through the oven and avoids the appearance of hot spots due to locally excessive heating, or alternatively the presence within the mat of areas in which the binder has not been fully polymerized. An oven used in the mineral wool manufacturing process thus very commonly comprises a multitude of boxes (for example between 2 and 10), as well as known means for establishing variable and independent thermal conditions within each box. At present, however, the ovens used consume a large amount of energy. An object of the present invention is to reduce the energy consumption of such ovens. For this purpose, an object of the invention is an oven for crosslinking a continuous mat of mineral or vegetable fibers, comprising: a plurality of heating boxes traversed successively by said fiber mat, each comprising a central compartment delimited by side walls, upper and lower, said compartment comprising inlet and outlet ports of a flow of hot gas located on either side of the fiber mat, such that after crossing the mattress by the flow of hot gas, the binder is progressively brought to a temperature above its hardening temperature, at least one transport conveyor of the mattress through the various boxes, said conveyor being permeable to the flow of hot gas passing through said mattress; outer insulation casing surrounding said plurality of casing, said oven being characterized in that at least one of said casing includes in addition, between the outer insulation casing and said central compartment, an integrated device for heating and recirculating hot gas comprising: at least one radial turbine mounted horizontally on the upper wall or the bottom wall of the central compartment and whose axis of rotation is arranged vertically, said turbine sucking the hot gas along said axis through a gas outlet of the central compartment after passing through the mattress, and radially rejecting it to recirculation means, means for recirculating the hot gas at the outlet of the radial turbine to the gas inlet orifice in the compartment, said recirculation means being arranged at least partly on at least one side wall of the compartment; minus a means of heating the gas flowing in said box. Such an oven provides a compact device combining heating, blowing and supply ducts reduced to a minimum, thereby minimizing pressure losses and improving blowing efficiency. Such a configuration allows in particular a significant saving of the energy necessary for the manufacture of mineral wool. Moreover, thanks to its compactness, the device can be included in the envelope of insulating material provided around the box, so as to minimize the heat loss in the conduits and to heat the conduits by radiation 25 of the box. According to particular embodiments, the oven includes one or more of the following characteristics taken separately or in any technically possible combination: the outlet orifice (s) of the hot gas flow are formed in the upper wall; the central compartment and wherein the or turbines are mounted on the upper wall of the central compartment, the inlet of a turbine being placed opposite a hot gas outlet orifice. The outlet orifice or outlets of the hot gas flow are formed in the bottom wall of the central compartment and in which the turbine or turbines are mounted on the bottom wall of the central compartment, the inlet of a turbine being arranged in look at a hot gas outlet. 5 - The heating means is integrated or opens in said box. - The gas heating means is placed in the central compartment between the fiber mat and the hot gas outlet. - The gas heating means is in the form of a radiant tube. - The heating means of the gas is placed at the outlet of the radial turbine, said heating means opening or being disposed in said recirculation means. - The recirculation means comprise a divergent gas communication with the outlet of the turbine, hermetically extended by at least one lateral blowing duct disposed along a side wall 15 of the central compartment, said blowing duct opening on an orifice entrance to the central compartment. - An extraction duct, preferably convergent, vertically connects the gas outlet port to a turbine inlet. - The heating and recirculation device comprises a single radial turbine arranged in the center of the upper wall or the bottom wall of the central compartment and facing a single hot gas outlet orifice. - The heating and recirculation device comprises two radial turbines, preferably arranged in a central symmetry with respect to the upper wall or the bottom wall of the central compartment. - The heating and recirculation device comprises two radial turbines and each turbine is connected to separate recirculation means including: - a first blowing duct in fluid communication with a first radial turbine, said blowing duct being disposed on 3037640 A first side wall of the compartment and opening on a first inlet opening on said first side wall; a second blowing duct in fluid communication with the second radial turbine, said blowing duct being disposed on the side wall. opposite the compartment and opening onto a first inlet orifice made on said opposite side wall. According to a preferred configuration of such a mode: the first inlet orifice on which the first blowing duct opens has a length substantially equal to half that of the central compartment; the second inlet orifice; , on which the second blow duct opens, has a length substantially equal to half that of the central compartment, - the two orifices cover together substantially the entire length of the central compartment, - the two orifices are in offset position on the opposite side walls. - A bypass opening (bypass) of the hot gas is formed between the central compartment and at least one blowing duct.
    [0004] The present invention also relates to a box as described above comprising in particular: - a central compartment delimited by side walls, upper and lower, - entry and exit locks sized for the passage of a mat of fiber, comprising in the central compartment inlet and outlet ports of a flow of hot gas located on either side of the fiber mat, said box further comprising an integrated device for heating and recirculating the hot gas of which: at least one radial turbine mounted horizontally on the upper wall or the bottom wall of the central compartment, the axis of rotation of which is arranged vertically, said turbine sucking the hot gas along said axis through an orifice of outlet of the gas from the central compartment 5 and radially rejecting it to recirculation means, means for recirculating the gas at the outlet of the radial turbine until u'à the gas inlet port in the compartment, arranged at least partly on at least one side wall of the compartment - at least one air heating device flowing in said box.
    [0005] The invention finally relates to a production line comprising an oven as described above. This is in particular a production line of a continuous mattress of mineral and / or vegetable fibers, comprising at least one fibering unit of a continuous mattress of mineral and / or vegetable fibers, a transport conveyor of the mattress and a oven as described previously. Such a production line may further comprise means for forming the mattress panels and / or rolls.
    [0006] The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which: FIG. 1 describes a current fiber drawing installation of a mattress mineral wool, incorporating a reticulation oven; FIG. 2 is a schematic sectional and more detailed view of a current cross-linking oven comprising a plurality of independent heating boxes; FIG. 3 is a schematic perspective view of a heating box according to the present invention and comprising a single radial turbine; - Figures 4 and 4 bis schematically illustrate the operation of the box according to Figure 3 in an oven according to the invention; and FIGS. 5 and 5 bis illustrate a second example of another box according to the invention, this time comprising two radial turbines in an oven according to the invention. In all these figures, the same numbering designates elements that are identical or that fulfill the same function within the oven. FIG. 1 represents the first steps of a line of production of a continuous mat of mineral fibers, more particularly based on glass wool, it being understood that the line is of any type suitable for the production of products based on mineral and possibly vegetable fibers.
    [0007] By way of example for glass wool, the line comprises a fiberizing unit 1, for example according to the internal centrifugation fiber drawing method. The fiberizing unit comprises a hood (not shown in FIG. 1) surmounted by at least one centrifuge 2. Each centrifuge comprises a basket (not shown in FIG. 1) for recovering a fiberglass net. previously melted and a plate-shaped part 3 whose peripheral wall is provided with a large number of orifices. In operation, the molten glass, brought into a net 4 from a melting furnace (not shown) and first recovered in the basket of the centrifuge, escapes through the orifices of the plate 3 in the form of a multitude of filaments driven in rotation. The centrifuge 2 is further surrounded by an annular burner 5 which creates at the periphery of the centrifuge wall a gaseous stream of high velocity and temperature sufficiently high to stretch the fiber glass filaments in the form of a web. Heating means 7, for example of the inductor type, serve to keep the glass and the centrifuge at the correct temperature. The web 6 is closed by a gaseous stream of air introduced under pressure, schematized by the arrows 8. The torus 6 thus created is surrounded by a spraying device of the sizing containing a thermosetting binder in aqueous solution, of which only two elements 9 are shown in FIG.
    [0008] It is for example a phenolic binder or an alternative binder with a low formaldehyde content, preferably even without formaldehyde, binders sometimes referred to as "green binders", in particular when they are at least partially derived from a base renewable raw material, in particular plant, including the type based on hydrogenated sugars or not.
    [0009] The bottom of the fiberizing hood is constituted by a fiber-receiving device comprising a conveyor incorporating an endless band 10 permeable to gas and water, under which suction boxes 11 are disposed of gases such as air, fumes and excess aqueous compositions from the previously described fiberizing process. Thus, on the belt 10 of the conveyor, a mattress 12 of glass wool fibers is intimately mixed with the sizing composition. The mattress 12 is led by the conveyor 10 to an oven 14 for crosslinking the thermosetting binder.
    [0010] As shown in FIG. 2, this oven 14 comprises a series of wells separated from each other by insulating walls. The enclosure is normally traversed by two conveyors 18A, 18B transporting and calibrating the mattress 12. These conveyors are for example rotated by motors placed on the ground (not shown in Figure 1), and 15 are constituted of well known by a succession of pallets constituted by grids hinged together and perforated to be permeable to gases. While ensuring the passage of hot gases favoring fast setting of the binder, the conveyors 18 usually compress the mattress 12 to give it the desired thickness. For example, for a rolled panel, it is typically between 10 and 450 mm, the density of the glass wool layer being for example between 5 and 150 kg / m3. Thus, for example, the so-called low density products, for which the density varies between 5 and 20 kg / m 3, and the so-called high density products, in which the density varies between 20 and 150 kg / m 3. FIG. 2 describes in more detail the structure of a known cross-linking oven 12. The oven shown in FIG. 2, which can not be considered as limiting the scope of the present invention, comprises seven independent boxes 21-27. .
    [0011] The mat of binder-spunbonded mineral wool enters firstly into an inlet airlock 17A provided with a fume extraction hood 19A, these hoods being connected to a dedicated circuit for treating said fumes (not shown in FIGS. ). In this first airlock 17A, the hot air introduced into the mattress 3037640 9 allows firstly the vaporization of the residual water present in the fiber mat. In the first boxes, for example the boxes 21-24, the hot air is introduced from the bottom of the oven and discharged from above, after crossing the mattress. In the following boxes, for example the boxes 25-27, the hot air is this time introduced from the top of the oven and discharged from below. In all the figures, the circulation of the air in the oven is represented by arrows 30. The direction of circulation of the mattress is indicated by the arrows 31. Of course, each box is provided with an opening or airlock. 10 input and output sized for the passage of the fiber mat. The use of a plurality of boxes allows the progressive temperature rise of the fiber mat to a temperature above the curing temperature of the binder present on the fibers of the mattress. Perfect control of the temperature in the different boxes depends on the mechanical properties of the final product, especially if a green binder is used, as indicated above. The additional fumes generated in the caissons are generally discharged into an airlock 17B through a hood 19B. Each box 21-27 comprises a central compartment 40 surrounded by an insulating material, generally made of glass wool, the central compartment being surrounded by an outer metal enclosure. An outer insulation envelope of the oven surrounding the plurality of chambers (not shown in FIG. 2) is thus delimited. The enclosure of each box delimits a central compartment 40. At the level of each box, the hot air is introduced via an inlet and outlet hood system (28, 29) disposed above and below the chamber. pregnant. In such a conventional system, the hot air generation system (burner, fan, hood) is disposed outside the external insulation casing of the oven, which generates not only a maximum space requirement of installation in its entirety but also very strong energy losses. Although not shown in Figure 2, an oven usually comprises an outer insulation envelope surrounding all the caissons of the oven, made of an insulating material such as mineral wool. Most often, this outer insulation envelope itself surrounds a first metal enclosure to ensure the sealing of the entire installation, so that the polluted gases can not be discharged at the outlet of the device only by hoods 19B and 19A. As indicated above, the object of the present invention is to reduce the energy consumption of the present ovens. For this purpose, an object of the invention is an oven as will now be described in relation to Figures 3 to 5, without of course that said invention is restricted to these embodiments only. In an oven according to the invention, it implements a compact device 10 combining heating, blowing and supply ducts reduced to a minimum, thereby minimizing pressure losses while improving the efficiency of blowing. In particular, to obtain such a result and according to an essential feature of the present invention, the present oven comprises at least one box which incorporates a specific device for generating and circulating the hot gas stream for the progressive hardening of the binder. Preferably all the caissons of an oven according to the invention are constructed according to this mode. The principles of operation and certain structural characteristics of an oven / box according to the invention are described in more detail and in a nonlimiting manner thereafter, using FIGS. 3, 4, 4a, 5 and 5. 5a. Figure 3 is shown in more detail and schematically in elevation a box 20 according to a first embodiment of the invention. Openings or orifices 47 and 48 are formed on either side of the central compartment 40 of the box as can be seen in FIG. 3. The orifice 47 allows the introduction into the compartment 40 of the hot gas for the crosslinking of the binder and the orifice 48 allows the exit of the hot gas after crossing the fiber mat. On the upper wall 45 of the central compartment 40, facing the outlet orifice 48 of the hot gases, is disposed a radial turbine 50, so that its axis of rotation is disposed substantially vertically. The housing of the turbine 50 can either be fixed directly to the wall 45 or alternatively be connected to the outlet 48 via an extraction pipe (not shown in Figure 3).
    [0012] This turbine is thus placed on the compartment 40 in such a way that it sucks the gas through the outlet orifice 48 of the gas, after passing through the mattress 12. The gas (in principle initially the air) is rejected. of the turbine in a radial direction as shown schematically by the arrows 30, to loop recirculation means comprising for example a divergent 51 hermetically connected to the outlet of the turbine and a lateral blow duct 52 then distributing the exhaust gas over any the length L of the box. The diverging portion 51 is hermetically extended by a lateral blowing duct 52 disposed along and advantageously over the entire surface of a side wall 43 of the central compartment 40. Such a configuration makes it possible to considerably reduce the size of the lateral blowing duct. 52, which can then be thin. Also preferably, the section of the conduit 52 is rectangular. Optionally, the duct 52 is provided with internal guiding walls, for a better distribution of the flow in the duct, and 15 when it is reintroduced into the compartment 40 via the orifice 47. The lateral blowing duct 52 opens onto a duct. inlet port 47 of the central compartment, which preferably extends over the entire length of the compartment 40. The hot air is thus reintroduced into the compartment 40 below the fiber mat 12 and brought to cross again under 20 the effect of the depression created on its opposite face by the turbine 50. In FIG. 4, a side view is shown, in a section at its center of the box of FIG. 3, to further illustrate the operation thereof. . In FIG. 4, other elements are represented, in particular: the outer insulation casing 49, an external metal casing 55, a heating means 53 placed inside the compartment 40, either downstream of the turbine 50, in the direction of circulation of the hot gases as previously described, the endless and gas-permeable belts of the two conveyors 18A, 18B transporting and calibrating the mattress 12 drive 57 of the radial turbine, disposed outside the enclosure and above the outer insulation casing 49, and the drive shaft 56 connecting said motor to the turbine. In Figure 4, to better understand the operation of the invention, there is shown an outer insulation casing 49 surrounding all of the caissons 20 of the oven. Most often, the outer insulation envelope itself surrounds a first external metal enclosure 55 surrounding the entire oven, this enclosure being mounted and welded to seal the entire installation.
    [0013] Within the compartment 40, heating means 53 are also provided according to the invention (shown only in FIGS. 4 and 4a), which make it possible to keep the hot gases at the temperature required to ensure the hardening of the link under the conditions required in each box. Such heating means may for example be placed in the central compartment 40 between the fiber mat 12 and the outlet port 48 of the hot gas. It can be in particular and preferably a radiant tube. According to another possible embodiment, the heating means may be placed at the outlet of the radial turbine 50, in particular in the lateral blow duct 52. Here again, this means may advantageously be a radiant tube or a burner. Figure 4a schematically this time a top view of the box 20 already shown in Figures 3 and 4, surrounded by the metal enclosure 55 and the outer insulation envelope 49 of the oven. The fiber mat 12, 25 conveyed by the conveyors 18A and 18B is introduced into the central compartment 40 via an opening or an entry lock 58 and comes out after passing through via an opening or an airlock 59. Preferably, in such a configuration comprising only a single turbine 50, it is placed centrally on the box 40. The turbine 50 comprises of course a housing surrounding it airtight manner. It has a shape of any type adapted for the turbine to produce a suction effect at the inlet of the housing and blowing at the outlet of the housing.
    [0014] The integrated heating and extraction device, preferably included in each chamber of an oven according to the invention, comprises, in addition to the radial turbine 50, means for recirculating the hot gases leaving said turbine, allowing reinjecting it on the opposite side of the mineral wool mat, with reference to the outlet 48 of said gas. The recirculation means illustrated in FIGS. 3 to 5 advantageously comprise a diverging portion 51 and a lateral discharge duct 52, but any other known means can of course be envisaged without departing from the scope of the invention, making it possible to convey said gases from the outlet of the turbine 50 to the orifice 47 10 of the gas inlet in the compartment 40. In this mode, the integrated heating and extraction device thus sucks the hot gases from one side of the mattress and reinjects them on the opposite side of the compartment, so as to produce an ascending vertical flow of hot gases through the mattress.
    [0015] Also, there is shown in the figures a configuration in which the turbine 50 is disposed above the compartment 40, that is to say in the upper part of the box. It is obvious that according to the invention, the turbine can also be positioned this time below the compartment 40, that is to say in the lower part of the box. In such a case, the outlet orifice 48 of the hot gas flow 30 is then formed in the bottom wall 46 of the central compartment 40 and the turbine is mounted on the lower wall 46 of the central compartment, the inlet of the turbine being arranged opposite the outlet orifice 48 of the hot gas. According to such a configuration, the recirculation means described above allow this time to convey said gases 25 from the outlet of the turbine 50 to the inlet port 47 of the gas in the compartment 40, said orifice 47 of gas inlet being then practiced in the upper part of the compartment 40 to allow the recirculation of said gas and the passage of the mattress 12 by said gas in a downward flow. According to this variant, the turbine 50 is thus disposed under the compartment 40 and the hot gas extraction 30 is practiced on the lower side of the box, while the hot gases are reintroduced into the compartment along an upper side of the box. The entire heating and extraction device thus appears identical to that described above but arranged in an inverted manner.
    [0016] As described above, the heating and extraction device according to the invention thus forms an integrated hot gas recirculation circuit permitting crosslinking of the binder, which limits thermal losses and energy consumption.
    [0017] As illustrated in FIG. 2, the first four boxes are, for example, configured to produce a rising hot gas flow while the following three boxes are configured to produce a downward hot gas flow, according to the previously described principles. In a variant, an alternation of ascending / descending flows in the various boxes is also possible according to the invention. According to the invention, as a rule, each heating device 53 is independent and comprises means for controlling the temperature and the flow rate of the hot gases. The heating device is, for example, configured to produce a flow of hot gas, the temperature of which, during the passage of the fiber mat 12, is between 200 ° C. and 250 ° C., the temperature depending of course on the type of binder. used. Other boxes can be set at different temperatures. Regarding the flow, the device is for example configured for the turbine to produce a gas flow of the order of 1000 to 60000 m3 / h.
    [0018] FIGS. 5 and 5bis illustrate another exemplary embodiment of the invention in which the box comprises two heating and recirculation devices, including two distinct radial turbines 50A and 50B, the two turbines being arranged between them in a central symmetry on the central compartment of the box. The box thus comprises two hot gas circuits, the first circuit occupying a first half of the length of the main chamber while the second circuit occupies the second half. According to such a configuration, each turbine 50A, 50B is connected to separate recirculation means, respectively: a first blowing duct 51A in fluid communication with the first radial turbine 50A, said blowing duct 51A being disposed on a first side wall 43 of the compartment and 3037640 opening on a first inlet port 47A formed on said first side wall 43, a second blowing duct 51B in fluid communication with the second radial turbine 50B, said blowing duct 51A being disposed on the opposite side wall 44 of the compartment 40 and opening onto a second inlet orifice 47B formed on said opposite side wall 44. As shown in FIGS. 5 and 5a, the first inlet orifice 47A, on which the first blowing duct opens out. 52A, for example has a length substantially equal to half that of the central compartment 40, and the second inlet orifice 47B, on which the second lateral blow duct 52B opens, has a length substantially equal to half that of the central compartment 40. Preferably, the two orifices cover together substantially the entire length of the central compartment 40. According to another advantageous configuration shown in Figures 5 and 5a, the two orifices 47A, 47B are in offset position on the side walls 42, 44 opposite.
    权利要求:
    Claims (15)
    [0001]
    REVENDICATIONS1. Oven for crosslinking a continuous mattress (12) of mineral or vegetable fibers, comprising: - a plurality of heating boxes (20) traversed successively by said fiber mat (12), said boxes each comprising a central compartment (40) defined by side walls (41-44), upper (45) and lower (46), said compartment comprising inlet ports (47) and outlet (48) of a hot gas stream (30) located both sides of the fiber mat, such that after crossing the mattress by the hot gas flow, the binder is gradually brought to a temperature above its curing temperature, - at least one conveyor (18A, 18B ) transporting the mattress through the various caissons (20), said conveyor being permeable to the flow of hot gas passing through said mattress, - an outer insulation casing (49) surrounding said plurality of casings, said oven being characterized in that that at least one of said boxes further comprises, between the outer insulation casing (49) and said central compartment (40), an integrated heating and hot gas recirculation device comprising: - at least one turbine radial (50) mounted horizontally on the upper wall (45) or the bottom wall (46) of the central compartment (40), the axis of rotation of which is arranged vertically, said turbine sucking the hot gas along said axis through an outlet (48) of the gas of the central compartment (40) after passing through the mattress (12), and radially rejecting it to recirculation means (51, 52), - recirculation means (51, 52) of the hot gas at the outlet of the radial turbine (50) to an inlet (47) of the gas in the compartment (40), said recirculation means being arranged at least partly on at least one side wall (43); , 44) of the compartment, 3037640 17 at least one heating means (53) of the gas circulating in said box.
    [0002]
    2. Oven according to claim 1, wherein the outlet orifice (es) (48) of the hot gas flow (30) are formed in the upper wall (45) of the central compartment (40) and in which the turbine or turbines (50) are mounted on the upper wall (45) of the central compartment (40), the inlet of a turbine being placed opposite an outlet (48) of the hot gas.
    [0003]
    3. Oven according to claim 1, wherein the outlet or openings (48) of the hot gas flow (30) are formed in the bottom wall (46) of the central compartment (40) and in which the turbine or turbines ( 50) are mounted on the bottom wall (46) of the central compartment, the inlet of a turbine being arranged facing an outlet (48) of the hot gas.
    [0004]
    4. Oven according to any one of the preceding claims, wherein the heating means (53) is integrated or opens into said box (20).
    [0005]
    5. Oven according to any one of the preceding claims, wherein the heating means (53) of the gas is placed in the central compartment (40) between the fiber mat (12) and the outlet orifice (48). hot gas, and preferably is in the form of a radiant tube.
    [0006]
    6. Oven according to any one of the preceding claims, wherein the heating means (53) of the gas is placed at the outlet of the radial turbine (50), said heating means opening or being disposed in said recirculation means (52). ).
    [0007]
    7. Oven according to any one of the preceding claims, wherein the recirculation means comprise a divergent (51) in gas communication with the outlet of the turbine (50), hermetically extended by at least one lateral blowing duct (52). ) disposed along a side wall (43) of the central compartment (40), said blowing duct (52) opening on an inlet (47) of the central compartment.
    [0008]
    An oven according to any one of the preceding claims, wherein an extraction duct, preferably converging, vertically connects a gas outlet (48) to a turbine inlet (50). 3037640 18
    [0009]
    9. Oven according to any one of the preceding claims, wherein the heating and recirculation device comprises a single radial turbine (50) arranged in the center of the upper wall (45) or the bottom wall (46) of the central compartment. (40) and facing a single outlet (48) of the hot gas.
    [0010]
    10. Oven according to any one of claims 1 to 7, wherein the heating and recirculation device comprises two radial turbines (50A, 50B), preferably arranged in a central symmetry with respect to the upper wall (45) or the bottom wall (46) of the central compartment. 10
    [0011]
    11. Oven according to the preceding claim, wherein each turbine (50A, 50B) is connected to separate recirculation means including: - a first blowing duct (51A) in fluid communication with a first radial turbine (50A), said blow duct (51A) being disposed on a first side wall (43) of the compartment and opening on a first inlet orifice (47A) formed on said first side wall (43), - a second blowing duct (51B) in fluid communication with the second radial turbine (50B), said blow duct (51A) being disposed on the opposite side wall (44) of the compartment (40) and opening onto a first inlet (47B) made on said opposite side wall (44).
    [0012]
    12. Oven according to the preceding claim, wherein: - the first inlet orifice (47A), on which the first blowing duct (52A) opens, has a length substantially equal to half that of the central compartment (40); the second inlet orifice (47B), on which the second blowing duct (52B) opens out, has a length substantially equal to half that of the central compartment (40), the two orifices the entire length of the central compartment (40), the two orifices (47A, 47B) are in offset position on the opposite side walls (43, 44).
    [0013]
    13. Oven according to any one of the preceding claims, wherein a bypass opening of the hot gas is provided between the central compartment and at least one blowing duct.
    [0014]
    14. Housing (20) for a curing oven of a continuous mattress (12) of mineral or vegetable fibers, comprising a central compartment (40) delimited by side walls (41-44), upper (45) and lower ( 46), input and output airlocks sized for the passage of a fiber mat, 10 comprising in the central compartment (40) inlet (47) and outlet (48) ports of a flow of hot gas (30) located on either side of the fiber mat, said box being characterized in that it further comprises an integrated device for heating and recirculating the hot gas, including: at least one radial turbine (50) mounted horizontally on the upper wall (45) or the bottom wall (46) of the central compartment (40) and whose axis of rotation is arranged vertically, said turbine sucking the hot gas along said axis through an orifice of outlet (48) from the central compartment (40) and radially rejecting it to s recirculation means (51, 52), means for recirculating the gas at the outlet of the radial turbine (50) to the inlet orifice (47) of the gas in the compartment (40), arranged at least partly on at least one side wall (43, 44) of the compartment, at least one heater (53) of the air circulating in said housing (20).
    [0015]
    15, Line for manufacturing a continuous mattress of mineral and / or vegetable fibers, comprising at least one fibering unit of a continuous mattress of mineral and / or vegetable fibers, a transport conveyor of the mattress and an oven according to the invention. any of claims 1 to 12.
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    同族专利:
    公开号 | 公开日
    JP2018524541A|2018-08-30|
    CA2987089A1|2016-12-22|
    WO2016203170A1|2016-12-22|
    EP3311088A1|2018-04-25|
    CN107709913A|2018-02-16|
    US20180156539A1|2018-06-07|
    FR3037640B1|2017-06-16|
    EP3311088B1|2019-08-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
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    法律状态:
    2016-06-14| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-23| PLSC| Publication of the preliminary search report|Effective date: 20161223 |
    2017-06-23| PLFP| Fee payment|Year of fee payment: 3 |
    2018-06-25| PLFP| Fee payment|Year of fee payment: 4 |
    2019-06-21| PLFP| Fee payment|Year of fee payment: 5 |
    2021-03-12| ST| Notification of lapse|Effective date: 20210205 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1555612A|FR3037640B1|2015-06-19|2015-06-19|ETCH FOR CROSSLINKING A CONTINUOUS MATTRESS OF MINERAL OR VEGETABLE FIBERS|FR1555612A| FR3037640B1|2015-06-19|2015-06-19|ETCH FOR CROSSLINKING A CONTINUOUS MATTRESS OF MINERAL OR VEGETABLE FIBERS|
    US15/736,870| US20180156539A1|2015-06-19|2016-06-17|Drying oven for crosslinking a continuous mat of mineral or plant fibers|
    JP2017565787A| JP2018524541A|2015-06-19|2016-06-17|Drying oven for cross-linking continuous mats of minerals or plant fibers|
    CN201680036019.9A| CN107709913A|2015-06-19|2016-06-17|For being crosslinked the drying oven of continuous mineral or plant fiber mat|
    EP16736532.9A| EP3311088B1|2015-06-19|2016-06-17|Housing for curing oven and curing oven for crosslinking a continuous mat of inorganic or plant fibres|
    CA2987089A| CA2987089A1|2015-06-19|2016-06-17|Curing oven for crosslinking a continuous mat of inorganic or plant fibres|
    PCT/FR2016/051477| WO2016203170A1|2015-06-19|2016-06-17|Curing oven for crosslinking a continuous mat of inorganic or plant fibres|
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